Abrégé

The present invention discloses a method for controlling composite metal ions in a solid waste dump, and belongs to the field of metal pollution treatment for solid waste dumps. A permeable adsorption wall that can adsorb the harmful substances in a leachate is built up around a solid waste dump; specifically, if the solid waste dump is arranged against a mountain, it is only necessary to build up the permeable adsorption wall around the outer side of the solid waste dump that is not surrounded by the mountain; if there is subterranean water below the solid waste dump, the constructed permeable adsorption wall must extend downward to a subterranean aquiclude to prevent the leachate of the solid waste dump from flowing out with subterranean water; the permeable adsorption wall is composed of a raw soil layer, a mixed layer of raw soil layer and an attapulgite clay , a mixed layer of raw soil layer and an attapulgite clay @ manganese dioxide a mixed layer of raw soil layer and an attapulgite clay @ copper sulfide , and a raw soil layer , which are arranged sequentially . This method can realize stable and efficient entrapment and removal of harmful metals, provide a product with strong stability, flexible operation, and green ness , and has a high technical guidance and application significance for the water pollution control on composite metal ions produced in coal mining and non ferrous metal smelting and heap leaching processes.

Classes IPC  ?

• B09B 3/10 - Destruction de déchets solides ou transformation de déchets solides en quelque chose d'utile ou d'inoffensif impliquant une étape d'adsorption

Abrégé

Disclosed is a single-layer shaft lining with a joint sealing structure and a grouting system and its construction method, which belongs to the technical field of mine construction engineering. A joint is formed at the contact position of an upper shaft lining and a lower shaft lining, and a sealing plate and a filling layer are arranged on the outer side of the joint; and the sealing plate and the filling layer are combined to form a sealing structure of the single-layer shaft lining. The single-layer shaft lining provided by the present disclosure has good overall water sealing performance, which is convenient to construct, and is much lower than a double-layer shaft lining and a double-layer composite shaft lining. It is suitable for the shaft excavated by freezing method, as well as suitable for the shaft excavated by common method or grouting method.

Classes IPC  ?

• E21D 5/11 - Revêtement des puits; Revêtements à cet effet avec combinaisons de différents matériaux, p.ex. bois, métal, béton

Abrégé

The present disclosure provides a low-energy-consumption grading and positioning method and system for a coal mine auxiliary transportation vehicle. The method comprises: SIO, determining an optimal transportation route of the vehicle, and dividing the optimal transportation route into a plurality of locked intervals; S20, determining an initial velocity vo of the vehicle passing through each locked interval; S30, constructing a discretization mileage estimation model to update the vehicle's real-time position, and obtaining dynamic track information of the vehicle in each locked interval; S40, constructing a [vO, t] prediction model to obtain a theoretical time to of the vehicle passing through each locked interval; S50, comparing an actual time t and the theoretical time to of the vehicle passing through each locked interval, and selecting whether to start overtime early warning or overtime alarm; and S60, repeating S30 to S50 after the vehicle enters the next locked interval.

Classes IPC  ?

• G08G 1/123 - Systèmes de commande du trafic pour véhicules routiers indiquant la position de véhicules, p.ex. de véhicules à horaire déterminé
• B60W 40/105 - Vitesse
• B60W 40/00 - Calcul ou estimation des paramètres de fonctionnement pour les systèmes d'aide à la conduite de véhicules routiers qui ne sont pas liés à la commande d'un sous-ensemble particulier
• E21F 13/00 - Transport spécialement adapté aux conditions du fond
• E21F 17/00 - Procédés ou dispositifs destinés à être utilisés dans les mines ou tunnels, non couverts ailleurs
• G06K 17/00 - Méthodes ou dispositions pour faire travailler en coopération des équipements couverts par plusieurs des groupes principaux , p.ex. fichiers automatiques de cartes incluant les opérations de transport et de lecture
• G08B 21/18 - Alarmes de situation

Abrégé

The present disclosure discloses a time service and positioning network systern for an undeigtound chain-shaped large space in a coal mine. The system adopts a base station- level network internal time synchronization method which takes an optical fiber time service as a main part and takes a satellite time service as an auxiliary part to construct a time service and positioning network system with an unified time within the ad- hoc network base stations, based on the ad-hoc network base stations linearly arranged in the underground chain-shaped large space in the coal mine. Through the network construction, the network stabilization and the network application, the system unifies the time reference of the base station-level network and improves the positioning accuracy of the network application by utilization of the base station-level network internal time synchronization method.

Classes IPC  ?

• H04W 84/18 - Réseaux auto-organisés, p.ex. réseaux ad hoc ou réseaux de détection
• H04W 56/00 - Dispositions de synchronisation
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme

Abrégé

A method for positioning an auxiliary transportation vehicle in a coal mine and a positioning system thereof are disclosed. The method comprises: S 1, acquiring a rotation velocity of each wheels and a rotation angel of a steering wheel, constructing a kinematics model based on the vehicle's non-steering wheels and a kinematics model based on the vehicle's steering wheels respectively, and constructing a kinematics model based on a vehicle's geometric center according to the kinematics model based on the non-steering wheels and the kinematics model based on the steering wheels; and S2, according to the vehicle's travelling condition, integrating the kinematics model based on the geometric center with a strap-down inertial navigation system for positioning, when the vehicle is in a normal travelling state; and integrating, the kinematics model based on the non-steering wheels with the strap-down inertial navigation system for positioning, when the vehicle is in an abnormal travelling state.

Classes IPC  ?

• G05D 1/24 - Dispositions pour déterminer la position ou l’orientation
• E21F 13/00 - Transport spécialement adapté aux conditions du fond
• G05D 1/224 - Dispositions de sortie sur les dispositifs de commande à distance, p. ex. écrans, dispositifs haptiques ou haut-parleurs
• G05D 1/225 - actionnées par des ordinateurs externes
• G05D 1/226 - Liaisons de communication avec les dispositions de commande à distance
• G05D 1/247 - utilisant des signaux fournis par des sources artificielles extérieures au véhicule, p. ex. balises de navigation
• G05D 1/43 - Commande de la position ou du cap par référence à un système à deux dimensions
• G05D 1/49 - Commande de l’attitude, c.-à-d. commande du roulis, du tangage ou des embardées
• G05D 1/606 - Compensation ou utilisation des conditions ambiantes externes, p. ex. du vent ou des courants d’eau (maintien de la position G05D 1/611)
• G05D 1/648 - Exécution d’une tâche au sein d’une zone ou d’un espace de travail, p. ex. nettoyage

Abrégé

A mining ore tank dedusting device includes at least one dust hood, at least one pneumatic conveying pipeline and a synchronous transportation system controlled by open and close of valves. The synchronous transportation system includes an air inlet, a movable air box, a ventilation channel, ventilation openings and valves. The movable air box is configured to be an inverted U-shape and is installed at an upper surface of the at least one ventilation channel and is movable synchronously with the at least one pneumatic conveying pipeline. The ventilation openings are provided at an upper surface of the ventilation channel and connect the movable air box and the ventilation channel. The valves are provided in the ventilation openings, with distances between neighboring ventilation openings being smaller than a length of the movable air box to ensure that the movable air box always covers at least one of the ventilation openings.

Classes IPC  ?

• B08B 15/02 - Précautions prises pour empêcher les crasses ou les fumées de s'échapper de la zone où elles sont produites; Ramassage ou enlèvement des crasses ou fumées de cette zone par utilisation de chambres ou de hottes recouvrant cette zone
• E21F 5/00 - Moyens ou procédés pour empêcher, fixer, abattre ou enlever la poussière; Prévention des explosions ou des feux
• E21F 5/20 - Enlèvement ou abattage de la poussière

Abrégé

A device for dust removal in mine tanks, including dust hoods, pneumatic conveying pipelines, a tape-sealed synchronous transfer system and a dust removal device. The tape-sealed synchronous transfer system includes a gas transmission port, a movable air box, a ventilating groove, ventilating openings, rubber tapes, and rollers. The movable air box is an inverted "U" shape and is movably arranged on an upper surface of the ventilating groove and is movable synchronously with the pneumatic conveying pipelines. On an upper surface of the ventilating groove are provided ventilating openings for connecting the movable air box and the ventilating groove. Distances among ventilating openings are smaller than a length of the movable air box to ensure the movable air box covers at least one of the ventilating openings at any time, and more than a ventilating opening communicates with the movable air box and the ventilating groove all times.

Classes IPC  ?

• B08B 15/02 - Précautions prises pour empêcher les crasses ou les fumées de s'échapper de la zone où elles sont produites; Ramassage ou enlèvement des crasses ou fumées de cette zone par utilisation de chambres ou de hottes recouvrant cette zone
• E21F 5/00 - Moyens ou procédés pour empêcher, fixer, abattre ou enlever la poussière; Prévention des explosions ou des feux
• E21F 5/20 - Enlèvement ou abattage de la poussière

Abrégé

The present disclosure belongs to the technical field of mining equipment, and in particular relates to an automatic driving system of a monorail hoist driven based on a digital twin and a method thereof. The system includes a railroad switch sensor module, a positioning system module, a data transferring system, an intelligent control system, a digital twin system and an automatic driving module. The railroad switch sensor module is configured to sense the connection-position state of a movable track in a monorail hoist railroad switch track. The data transferring system is configured to transmit the data on the surface and underground. A bidirectional transmission is performed between the intelligent control system and the railroad switch sensor module, a bidirectional transmission is performed between the intelligent control system and the positioning system module, and a bidirectional transmission is performed between the digital twin system and the intelligent control system.

Classes IPC  ?

• B61L 27/70 - Systèmes centraux de commande du trafic ferroviaire; Commande côté voie; Systèmes de communication spécialement adaptés à cet effet - Détails des communications côté voie
• B61B 3/02 - Systèmes ferroviaires surélevés avec véhicules suspendus avec véhicules automoteurs
• B61L 27/04 - Systèmes automatiques, p.ex. commandés par les trains; Passage à la commande manuelle
• E21F 13/00 - Transport spécialement adapté aux conditions du fond
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme
• H04W 4/44 - Services spécialement adaptés à des environnements, à des situations ou à des fins spécifiques pour les véhicules, p.ex. communication véhicule-piétons pour la communication entre véhicules et infrastructures, p.ex. véhicule à nuage ou véhicule à domicile

Abrégé

The present disclosure discloses a cascaded high-energy earthquake-fire coupled test system. The system includes a self-balanced loading system, a lifting furnace system, and a fume collecting hood system transversely arranged on an upper end of the lifting furnace system to collect fume; the self-balanced loading system includes two mobile reaction force frames capable of traveling on a first track and a high-temperature self-sensing loading beam transversely arranged on top portions of the two mobile reaction force frames; the lifting furnace system includes a furnace body mounting rack, inside which a combined furnace body is hung, being capable of traveling on a second track, two moving beams are slidably connected to an upper end of the furnace body mounting rack, movable mobile hoist engines are arranged at lower end surfaces of the moving beams, and an operating device is hung on bottom portions of the mobile hoist engines.

Classes IPC  ?

• G01M 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
• G01K 7/36 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments magnétiques, p.ex. des aimants, des bobines
• G01M 7/02 - Test de vibration

Abrégé

The present disclosure relates to the field of mineral processing and separation, and in particular, to an underground coal hypergravity field separation system and a separation process. The separation system includes a grading hydrocyclone group, hypergravity field separators, feeding pumps, and conveying pumps. Coal collected underground is graded through a grading hydrocyclone first, then is fed into the hypergravity field separators for separation, and finally, is conveyed to a next link for dehydration through the conveying pumps. The separation system of the present disclosure has less supporting equipment, small floor area, and no complex pipeline, and is suitable for a downhole operation. In addition, the hypergravity field separators can provide a high-strength centrifugal acceleration, which can realize rapid separation of coal gangue particles in a radial direction and a tangential direction, and realize effective separation of fine coal gangue particles.

Classes IPC  ?

• B03B 9/00 - Disposition générale d'un atelier de séparation, p.ex. schéma opératoire

Abrégé

The present invention discloses a quick-connect joint liquid supply valve, and a use method and a quick coupling method thereof, which are suitable for use in a joint liquid supply system. The quick-connect joint liquid supply valve includes a right valve body, a left valve body, a pre-tightening mechanism, a spring ball linkage mechanism, and a quick coupling plug. The left valve body and the right valve body are combined in a left-right manner. The pre-tightening mechanism is arranged in the right valve body, two ends of the spring ball linkage mechanism are arranged in the left valve body and the right valve body respectively, and the quick coupling plug is arranged on the left valve body. The quick-connect joint liquid supply valve is of a simple structure, low costs, high control precision, and fast response speed, can use its own structure to realize the independent adjustment of the pressure between flow channels, the instantaneous opening or closing of liquid supply pipelines, and the joint liquid supply of multiple liquid supply pipelines, and can be quickly coupled, which allows for the flexible and quick coupling of any number of liquid supply pipelines for joint liquid supply, and can realize the joint liquid supply of multiple hydraulic pumping stations in hydraulic systems requiring high pressure and high flow rate.

Classes IPC  ?

• F16K 17/04 - Soupapes ou clapets de sûreté; Soupapes ou clapets d'équilibrage fermant sur insuffisance de pression d'un côté actionnés par ressort
• F15B 13/02 - Dispositifs de distribution ou d'alimentation du fluide caractérisés par leur adaptation à la commande de servomoteurs

Abrégé

A pre-flotation high efficiency slurry conditioning device for wide-particle-grade flotation, suitable for coal slime flotation. Said device comprises a slurry conditioning drum (15) having a columnar structure on top and an inverted frustrum structure below, an ore slurry outlet (4) is provided at an upper part of a side wall, ore slurry pump separation openings (5) are provided at two sides below the ore slurry outlet (4), ore slurry jet openings (17) are respectively provided at two sides of the columnar structure, and circular cutting isolation plates (11) and flow guide plates (10) are provided in alternation at inner sides of the upper half of the slurry conditioning drum (15); a dual channel jet circulation chemical feed system comprises chemical feed pipes (13), each chemical feed pipe (13) comprises an inlet end, a diffusion end, and a chemical feed pipe opening arranged at a throat area of said pipe, the inlet end is connected to a three-way pipe by means of a centrifugal pump (8), which is connected to an ore slurry inlet (6) and an ore slurry pump separation opening (5), a mixing shaft (7) is provided in the axial direction within the slurry conditioning drum (15), a plurality of mixing impellers (14) are arranged on the mixing shaft (7), and the bottom-most two mixing impellers (14) and the lowest two circular cutting isolation plates (11) are arranged at a same horizontal height. The present apparatus can effectively improve coal slime hydrophobic flocculation and fine slime separation, improve an ore slurry preprocessing effect, and effectively alleviate internal flow field pressure within a flotation device.

Classes IPC  ?

• B03D 1/16 - Machines de flottation à propulseurs; Machines à subaération

Abrégé

A multimode visual servoing firefighting system and working method therefor. The system comprises a firefighting canon, an infrared nearfield vision device (1), a binocular vision device, and a control system. The infrared nearfield vision device (1) comprises an infrared camera, a nearfield camera, a support frame, a support transverse beam, and an engaging fitting. The binocular vision device comprises a first industrial camera, a sensor, a second industrial camera, a binocular camera box, and a rotatable electric telescoping rod. The control system comprises a processing unit, a controller, and a control cabinet. The present system integrates vision systems of various modes, satisfies firefighting requirements in various environments, increases the efficiency of a firefighting operation, and achieves the goal of smart firefighting.

Classes IPC  ?

• A62C 37/00 - Commande des installations de lutte contre l'incendie
• A62C 31/03 - Buses spécialement conçues pour la lutte contre l'incendie réglables, p.ex. depuis la pulvérisation jusqu'au jet concentré ou vice-versa

Abrégé

A device and method for detecting an angle of a shearer rocker arm based on optical fiber sensing are disclosed. The device includes an optical system and a mechanical system. The optical system includes a broadband light source, a polarizer, collimating lenses, a gradi ent- rotation media plate, a polarization beam splitter, and a data processing module. The mechanical system includes a connecting base, connecting rods, a slider, a bracket, and a sensor housing. When the shearer operates, the rocker arm converts rotation angle information to linear displacement related to a gradient refractive index. A position of the gradient-rotation media plate through which linearly polarized light produced by the optical system passes also changes. Consequently, corresponding rotation angles of a polarization plane formed after the light passes through the gradient-rotation media plate vary. A swing angle of the rocker arm is obtained according to a detected phase angle of the polarized light.

Classes IPC  ?

• G01B 11/26 - Dispositions pour la mesure caractérisées par l'utilisation de techniques optiques pour tester l'alignement des axes
• E21C 35/00 - EXPLOITATION DES MINES OU CARRIÈRES - Détails ou accessoires de machines pratiquant des saignées ou libérant complètement la matière minérale de la veine, non prévus dans les groupes , ou

Abrégé

Disclosed is a permanent magnet direct-drive slurry pump based on gas film drag reduction. The pump comprises a pemianent magnet motor, a main shaft, an impeller, and a valve block. The permanent magnet motor comprises a housing, a stator core, stator windings, a rotor core, and a permanent magnet. The rotor core and the impeller share the main shaft, and an airflow channel is provided inside the main shaft. The impeller comprises a front cover plate, a back cover plate, and blades. The blades are modularly manufactured. Blade gas-jet holes and hemispherical pits are provided on the pressure surface. The airflow channel communicates with the blade gas-jet holes. The valve block is disposed at the tail end of the main shaft to control gas exhaust and prevent liquid from entering the shaft.

Classes IPC  ?

• F04D 29/66 - Lutte contre la cavitation, les tourbillons, le bruit, les vibrations ou phénomènes analogues; Equilibrage
• F04D 7/04 - Pompes adaptées à la manipulation de liquides particuliers, p.ex. par choix de matériaux spéciaux pour les pompes ou pièces de pompe du type centrifuge les fluides étant visqueux ou non homogènes
• F04D 13/06 - Ensembles comprenant les pompes et leurs moyens d'entraînement la pompe étant entraînée par l'électricité
• F04D 29/24 - Aubes

Abrégé

The disclosure relates to a coal mine advanced detection method for a heading machine comprising: generating current to enter a coal seam through a movable cutting pick to form a stray current; collecting the stray current by a backflow net returns to a negative electrode of a power supply through a transition resistor; converting coal seam water content into an electric signal when information such as the water content changes; converting the electric signal into a strain signal with a piezoelectric ceramic when the potential difference across the transition resistor is applied to two ends of the piezoelectric ceramic; converting the strain signal into an optical signal by extruding a sensing optical fiber with the piezoelectric ceramic, the optical signal reaching a photoelectric detector through the sensing optical fiber, and the demodulated optical signal is analyzed to obtain the coal seam water content information.

Classes IPC  ?

• G01V 3/15 - Prospection ou détection électrique ou magnétique; Mesure des caractéristiques du champ magnétique de la terre, p.ex. de la déclinaison ou de la déviation spécialement adaptée à l'utilisation pendant le transport, p.ex. par une personne, un véhicule ou un bateau

Abrégé

Disclosed is a method for designing the width of an isolation coal pillar and a gasifier in underground gasification under an aquifer facing an overlying strata, which is suitable for the design of coal mining by underground gasification under the overlying stratum aquifer. The method comprises: firstly, determining the maximum height of a waterproof coal-rock pillar according to the position of an aquifer; calculating the thickness of a protective layer of the area to be gasified, and determining a development limit value of a water-flowing fracture zone of the gasified area; establishing a strip mining-surface mining retreating-type gas injection control underground gasification numerical model, and determining the relationship between the development height of a strip mining-surface mining retreating-type gas injection control underground gasification water-flowing fracture zone and the width of the gasifier and the isolation coal pillar; and selecting, in combination with the relationship between the development height of the water-flowing fracture zone and the width of the gasifier and the isolation coal pillar, the width of the gasifier and the isolation coal pillar for the strip mining-surface mining retreating-type gas injection control underground gasification, thereby completing the safe production design for the strip mining-surface mining retreating-type gas injection control underground gasification under the overlying stratum aquifer. The method is simple in terms of steps, and can ensure the optimal gasification production benefit on the premise of ensuring the stability of the overlying aquifer and the safe production of underground gasification.

Classes IPC  ?

• E21B 43/295 - Gazéification de matières minérales, p.ex. pour produire des mélanges de gaz combustibles
• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu

Abrégé

A driving system of a scraper conveyor, comprising a machine head chain wheel (11A), a machine tail chain wheel (11B), a machine head chain wheel driving mechanism, and a machine tail chain wheel driving mechanism. The machine head chain wheel driving mechanism is a hydraulic motor I (9A), and the machine tail chain wheel driving mechanism is a hydraulic motor II (9B). A hydraulic system for driving the hydraulic motor I (9A) and a hydraulic system for driving the hydraulic motor II (9B) comprise identical hydraulic elements and each comprise a three-position four-way electromagnetic reversing valve (2), a two-position two-way electromagnetic reversing valve (3), a two-position three-way electromagnetic reversing valve (6), an energy accumulator (8,) and an oil supplementing valve group (13).

Classes IPC  ?

• B65G 43/00 - Dispositifs de commande, p.ex. de sécurité, d'alarme ou de correction des erreurs
• B65G 19/18 - Transporteurs comportant un impulseur ou une série d'impulseurs portés par un élément de traction sans fin et disposés de façon à déplacer objets ou matériaux sur une surface porteuse ou sur un matériau de base, p.ex. transporteurs sans fin à raclett - Détails
• B65G 23/22 - Aménagements ou installations des moteurs d'entraînement
• B65G 23/26 - Utilisation d'embrayages ou de freins
• B65G 23/44 - Dispositifs de tension des courroies ou des chaînes
• B65G 43/02 - Dispositifs de commande, p.ex. de sécurité, d'alarme ou de correction des erreurs détectant une condition physique dangereuse des porte-charges, p.ex. pour stopper l'entraînement en cas d'échauffement

Abrégé

A high stress rock burst roadway bolt, comprising a sectional bolt rod body (1), a bolt tail lock, a force transmission tray (3) and a sleeve (4). The sectional bolt rod body is provided with protrusions at intervals, and the tail end of the sectional bolt rod body is provided with a thread, the thread is sequentially provided with the force transmission tray and the bolt tail lock, the sleeve is provided outside the sectional bolt rod body, and the sleeve is composed of metal pipes axially provided with through seams, the outer sides of the metal pipes are provided with fine threads, and the inner sides of the metal pipes are provided with inwardly recessed structures matching the protrusions on the sectional bolt rod body. Also disclosed are a design method and a working method of such a bolt. The bolt has the advantages of high anchoring force, and high pre-tightening force and also has the advantage that partial breaking will not affect the overall anchoring effect, and can effectively avoid the problems that the current ordinary bolts have severe anchoring conditions, and are unable to adapt to high stress, large deformation, strong rock burst, the rock crushing engineering environment, etc.

Classes IPC  ?

• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits
• E02D 5/74 - Moyens d'ancrage d'éléments de structure ou de rideaux de palplanches
• E21D 20/02 - Mise en place des boulons d'ancrage avec dispositions pour le scellement

Abrégé

An integrated machine system for rapid downhole excavation and a use thereof are disclosed. The system comprises a longitudinal-axis-type excavating machine body. A dual- rocker-arm cutting part, an anchoring and supporting part equipped with an automatic rod replacing mechanism, a baffle playing a role in temporary support and protecting the anchoring and supporting part, and a detecting part for early detection are disposed on the longitudinal axis type excavating machine body. A first rotary motor, a second rotary motor, a motor hydraulic cylinder together form a humanoid wrist joint. An anchor rod drilling machine is more flexible to operate and can be better adapted to the downhole complicated working environments, by means of the protection plate structure.

Classes IPC  ?

• E21D 9/10 - Exécution en utilisant des machines à forer ou à inciser
• E21D 9/12 - Dispositifs pour enlever ou transporter les matières d'excavation ou déblais; Plates-formes de travail ou de chargement
• E21D 11/40 - Dispositifs ou appareils pour la manutention ou le placement des unités de revêtement des tunnels ou des galeries
• E21D 20/00 - Mise en place des boulons d'ancrage
• E21D 23/04 - Caractéristiques structurelles de la construction de soutènements, p.ex. organes de liaison entre châssis adjacents ou séries d'étançons; Moyens pour empêcher un glissement latéral sur un sol incliné

Abrégé

An excavating, supporting and anchoring integrated machine system for downhole rapid excavating and a method of using the system are provided. The machine system includes a longitudinal axis type excavating machine body. A cutting part capable of feeding is used for cutting a section, an anchoring and supporting part moves flexibly, working at a plurality of angles, and used for driving an anchor rod on the cut section. A baffle playing a role in temporary support and protecting the anchoring and supporting part is disposed on the longitudinal axis of an excavating machine body. The cutting part may perform a feed movement and feed more while stopping to operate. A first rotary motor, a second rotary motor, and a motor hydraulic cylinder together form a humanoid wrist joint, so that an anchor rod drilling machine is more flexible to operate and can better adapt to the downhole' s complicated working environment.

Classes IPC  ?

• E21D 9/10 - Exécution en utilisant des machines à forer ou à inciser
• E21D 9/12 - Dispositifs pour enlever ou transporter les matières d'excavation ou déblais; Plates-formes de travail ou de chargement
• E21D 20/00 - Mise en place des boulons d'ancrage
• E21D 23/04 - Caractéristiques structurelles de la construction de soutènements, p.ex. organes de liaison entre châssis adjacents ou séries d'étançons; Moyens pour empêcher un glissement latéral sur un sol incliné

Abrégé

Disclosed is an eccentric hob type tunneling machine capable of breaking rock according to a predetermined path without affecting supporting work. The machine comprises a crawler walking mechanism, a rack, a hydraulic pump station, a power box, a sliding guide rail base, a propulsion cylinder I, a sliding seat, a transmission box, hydraulic motors, a hob arm rotating and sliding device, a hob arm, a low- speed high- torque motor, an eccentric disc-shaped hob, a control center, a loading device, a conveying device, a temporary supporting device, and an auxiliary work platform. The route of breaking rock with a hob can be adjusted according to different sections. The disc-shaped hob has a small cutting-based rock breaking load, high performance and high efficiency, and the hob rotates eccentrically, so that the hob can achieve the effect of breaking rock by vibration cutting.

Classes IPC  ?

• E21D 9/10 - Exécution en utilisant des machines à forer ou à inciser

Abrégé

Disclosed are a wellbore inspection system and method for an ultra-deep vertical shaft. The wellbore inspection system includes a wire rope moving system, inspection robots, a visual image acquisition system, a wireless communication module, a central control system, and an image post-processing system of an upper computer. The wire rope moving system includes a surface wire rope guide rail, an underground wire rope guide rail, a surface wire rope moving device, an underground wire rope moving device, and a wire rope. The visual image acquisition system includes explosion-proof cameras. After image information acquired by the explosion-proof cameras is processed by a lower computer, the processed image is transmitted by a wireless image transmission module to the image post- processing system of the upper computer. The central control system is connected to the inspection robots and the wire rope moving system, and the inspection robots are connected to the central control system.

Classes IPC  ?

• E21B 47/002 - Relevés dans les trous de forage ou dans les puits par inspection visuelle
• E21B 47/13 - Moyens pour la transmission de signaux de mesure ou signaux de commande du puits vers la surface, ou de la surface vers le puits, p.ex. pour la diagraphie pendant le forage par énergie électromagnétique, p.ex. gammes de fréquence radio
• E21B 47/01 - Dispositifs pour supporter des instruments de mesure sur des trépans, des tubes, des tiges ou des câbles de forage; Protection des instruments de mesure dans les trous de forage contre la chaleur, les chocs, la pression ou similaire

Abrégé

A safety monitoring and early-warning method for a man-machine interaction behavior of an underground conveyor belt operator is disclosed. The present invention determines a belt position in a video based on a camera calibration principle, and delineates a three-dimensional region of interest (ROI) based on the belt position and size. By using a "bottom-up" key-point extraction method, multi-person key-point detection of conveyor belt operators is performed by detection followed by clustering, thus guaranteeing the detection accuracy and improving the detection efficiency. The human body key-points and the ROI are separately projected twice, and a relationship between the human body and the belt position is estimated based on the two projections to screen out unsafe actions during man-machine interaction and give an early warning, so as to avoid a major safety hazard in the belt conveyor system caused by an abnormal contact of the operator with the belt region.

Classes IPC  ?

• G08B 21/02 - Alarmes pour assurer la sécurité des personnes
• B65G 43/00 - Dispositifs de commande, p.ex. de sécurité, d'alarme ou de correction des erreurs
• G06N 3/02 - Réseaux neuronaux
• H04N 7/18 - Systèmes de télévision en circuit fermé [CCTV], c. à d. systèmes dans lesquels le signal vidéo n'est pas diffusé

Abrégé

Disclosed are a synchronous movement apparatus of tracks in a wellbore inspection system and a control method thereof. The apparatus comprises an upper moving track, a lower moving track, an upper wire rope moving device, a lower wire rope moving device, and a control device. The upper and lower moving tracks are correspondingly embedded into a wellbore. The upper wire rope moving device is fitted in the upper moving track, and the lower wire rope moving device is fitted in the lower moving track. The upper and lower moving tracks have the same structure and each comprises a track body. A rolling face is arranged on the track body, and grooves are distributed on the rolling face along the extending direction of the track body. The control device cooperates with the grooves on the track bodies to control synchronous movement of the upper and lower wire rope moving devices.

Classes IPC  ?

• B25J 5/02 - Manipulateurs montés sur roues ou sur support mobile se déplaçant le long d'un chemin de guidage
• B25J 9/18 - Commandes à programme électriques
• E21B 47/00 - Relevés dans les trous de forage ou dans les puits

Abrégé

Disclosed is a device and method for forced circulation fast floatation separation, which is applicable for floatation of easy-to-float coarse mineral particles or coal particles. The device includes a transmission mechanism, a floatation tank, a fast floating system and a forced circulation system. An inverted truncated cone is below the floatation tank, and a foam tank is on top of the floatation tank, which includes a concentrate discharge tube. A sieve plate is arranged in the cylinder at a level of the foam tank. The forced circulation system is arranged in the inverted truncated cone of the floatation tank. Flow directing plates are arranged between the forced circulation system and the sieve plate. The transmission mechanism is above of the floatation tank. The forced circulation system comprises an upper flow directing cylinder, a propulsion wheel, a dispersion stator, a centrifugal mineralization wheel, and a lower flow directing device.

Classes IPC  ?

• B03D 1/14 - Machines de flottation
• B03D 1/02 - Procédés de flottation par formation d'écume

Abrégé

Disclosed is a device and method for fluid synergistic enhanced floatation separation for floatation of fine mineral particles or coal particles. The device includes a circulating pump, a turbulent flow mineralization generator and a floatation separation releaser. After feeding pulp into the floatation separation releaser, easy-to-float particles rise rapidly and are discharged from a concentrate discharge tube on a foam tank above the floatation separation releaser; medium floatable particles, after being sorted, float into the foam tank and are discharged from the concentrate discharge tube; difficult-to-float particles enter a middling-tailing separator through a channel between a tapered flow director and a wall of the floatation separation releaser, and divided into two parts: one discharged as the tailing from the floatation separation releaser; and the other fed into the turbulent flow mineralization generator via the circulating pump, mineralized and again fed into the floatation separation releaser to perform cyclic sorting.

Classes IPC  ?

• B03D 1/02 - Procédés de flottation par formation d'écume
• B03D 1/14 - Machines de flottation

Abrégé

The present invention discloses an embedded scraper rotation angle detection device for a scraper conveyor and a detection method. The detection device includes two extensible detection devices, two signal detection units and a remote processing unit, and the two extensible detection devices and the two signal detection units are disposed at two ends of a scraper respectively; and the signal detection units detect movement displacements of the extensible detection devices in real time and send out signals through wireless transmission modules, the wireless transmission modules and a wireless receiving module are used for data transmission, and a signal display processing module is used to calculate a rotation angle value of the scraper in real time, output and display the rotation angle value simultaneously, compare the rotation angle value measured in real time with a set safety threshold, and send out an alarm indication when the rotation angle value exceeds the safety threshold. The present invention has simple and reliable structure, low cost, small space size, high adaptability and good use effect, and a measurement method has small calculation amount, good real-time performance, high accuracy and wide practicability.

Classes IPC  ?

• B65G 19/06 - Transporteurs comportant un impulseur ou une série d'impulseurs portés par un élément de traction sans fin et disposés de façon à déplacer objets ou matériaux sur une surface porteuse ou sur un matériau de base, p.ex. transporteurs sans fin à raclett pour déplacer un matériau en vrac dans des augets ou des canaux ouverts les impulseurs étant des raclettes de dimension et de forme semblables à la section transversale de l'auget ou du canal
• B65G 19/22 - Impulseurs, p.ex. plaques-poussoirs, raclettes; Moyens de guidage à cet effet
• E21F 13/08 - Convoyeurs mobiles ou autres dispositifs de transport d'un point du front de taille à un autre

Abrégé

The present invention belongs to the technical field of coal washing and deashing, relates to a wide-size-fraction flotation system and process, and solves problems of complexity, high cost, high energy consumption and damage to the environment in the existing wide-size-fraction flotation process. The wide-size-fraction flotation system and process comprise: feeding coal slime to be floated into a stirrer (1), adding water to the floating coal slime in the stirrer (1), stirring until the floating coal slime is mixed uniformly, then feeding same into a grading cyclone (2) through a first feeding pump (a) for pre-grading; after grading of the coal slime in the grading cyclone (2), feeding overflow in the grading cyclone (2) into a flotation column (4) through a second feeding pump (b) for flotation, discharging flotation tailings through an underflow port of the flotation column (4), collecting flotation concentrates through an overflow port of the flotation column (4) and feeding same into a bubble generator (5) through a fourth feeding pump (d), and the flotation concentrates passing through the bubble generator (5) and being fed from the bottom of a hydraulic flotation machine (3); and feeding underflow in the grading cyclone (2) into the hydraulic flotation machine (3) through a third feeding pump (c), for flotation and recovery. Said flotation process is simple, energy- saving and environmental-friendly, and said flotation system has a simple structure and low costs.

Classes IPC  ?

• B03D 1/02 - Procédés de flottation par formation d'écume
• B03D 1/14 - Machines de flottation
• B04C 9/00 - Combinaisons avec d'autres dispositifs, p.ex. avec des ventilateurs

Abrégé

Disclosed is an underground coal preparation process, comprising: feeding exploited raw coal (1) into a raw coal classifying screen A of F25 mm for screening; performing dry coal preparation on a classifying-screen overflow (2) with a grain size of greater than 25 mm and feeding a classifying-screen underflow (3) with a grain size of less than 25 mm into an underground dedicated compact jigger C for sorting to obtain jigger overflow clean coal (6), jigging middling coal (7) and jigging gangue (8); screening and dewatering the jigger overflow clean coal (6) to obtain a clean coal product, and screening and dewatering the jigging middling coal (7) to obtain a middling coal product, sorting slime water (19) to be sorted and generated during sorting to obtain coarse and clean coal slime (29) and coarse and middling coal slime (27), and performing circulating water treatment on a final liquid.

Classes IPC  ?

• B03B 7/00 - Combinaisons de procédés ou d'appareils opérant par voie humide, avec d'autres procédés ou appareils, p.ex. pour la préparation des minerais ou cendres
• B03B 9/00 - Disposition générale d'un atelier de séparation, p.ex. schéma opératoire

Abrégé

Disclosed is an interference protection device and method for a hydraulic support and a cutting part of a shearer. The device includes: a plurality of dust-proof cases evenly and fixedly provided on a surface of one side of a hauling part of the shearer that faces away from a coal wall, and a dust-proof housing fixed on the hydraulic support. A first ultrasonic transducer and a flash lamp are fixedly provided in each dust-proof case, and a second ultrasonic transducer, a receiver, and a data processing module are fixedly provided in the dust-proof housing. The data processing module is electrically connected to the second ultrasonic transducer and the receiver separately, the first ultrasonic transducers and the flash lamps are all electrically connected to an external single-chip microcomputer, and the data processing module is electrically connected to a hydraulic support control computer. The present invention obtains a distance from the shearer to the hydraulic support by calculation from a difference between time points at which the second ultrasonic transducer and the receiver on the hydraulic support respectively receive an ultrasonic signal and an optical signal, and thus timely controls a guard plate to retract, thereby achieving the advantages of low cost, high applicability and high reliability.

Classes IPC  ?

• B23D 33/00 - Accessoires des machines à cisailler ou des dispositifs de cisaillage

Abrégé

Provided is a gravity separation apparatus for coarse coal slime. A spiral separation device is arranged above a spiral generating device. The spiral generating device comprises a base (8) and a vibration exciter (6) arranged in the base (8), and the spiral separation device comprises a columnar spiral external support (3). The top of the external support (3) of a separator is provided with an end cover, and one side of the end cover at the top of the external support (3) of the separator is provided with a feeding port (1). A joint of the bottom of the external support (3) of the separator and the base (8) is provided with a plurality of rubber spring tubes (7). A spiral middle shaft is axially provided at the center of a circle of the external support (3) of the separator, and a top end of the spiral middle shaft is movably connected to the end cover, and a bottom end thereof is connected to the vibration exciter (6). A spiral middle shaft support (4) is provided on the spiral middle shaft in the spiral external support (3). Spiral groove face grooves (5) are provided in the spiral middle shaft support (4) from top to bottom, and a bottom end of each of the spiral groove face grooves (5) is provided with a discharge port (9). A product interceptor is provided in the discharge port (9). Further provided is a method using the gravity separation apparatus for coal slime. The method comprises: feeding coal slime and water, as materials, into the spiral middle shaft support (4) in the spiral external support (3) through the feeding port (1), and separating the coal slime and water materials under the action of gravity; fast layering of material particle groups is realized under the action of the vibration exciter (6); finally, transversal zoning of light and heavy particles is realized on a spiral section of a spiral chute (2) according to a density difference, and a continuous coal slime zone is formed after material layering and zoning are stable; and finally, the product interceptor provided at a discharge end at the bottom of a spiral separator transversely segments the coal slime zone on the section of the spiral chute into three parts, i.e. clean coal, middlings and tailings, and the three parts are discharged through respective discharge ports (9), thereby improving the separation precision.

Classes IPC  ?

• B03B 5/62 - Lavage de matériaux en grains, en poudre ou en grumeaux; Séparation par voie humide en utilisant des classificateurs hydrauliques, p.ex. des appareils de concentration à chute en spirale ou en hélice, du type à couloir ou à bassin

Abrégé

A high ash fine-grained slime separation device and method, which is suitable for use in the field of coal washing. The device comprises four parts: a feed system (1), a mineralization system (2), a separation system (3) and a pulsating water flow control system (4). A slime mineralization area is isolated from a separation area, and a damping block (22) and pulsating water flow apparatus are built into the separation system (3). A flotation feed material is fed to the feed system (1) to complete a slurry adjustment operation. Slime after slurry adjustment enters the mineralization system (2) and turbulent collision occurs, forming mineralized bubbles. The mineralized bubbles traverse a turbulence elimination tube (12) and then enter the separation system (3). At the same time, the pulsating water flow control system (4) feeds a pulsating water flow of a certain frequency and waveform into the separation system (3).

Classes IPC  ?

• B03D 1/02 - Procédés de flottation par formation d'écume
• B03D 1/24 - Machines de flottation pneumatiques

Abrégé

A flexible anchor rod, which is suitable for the field of coal mine tunnel support engineering. The flexible anchor rod comprises a flexible anchor rod body (B), a tray (C), a fixed torque nut (D), an anti-friction washer (E) and an anti-twist self-aligning ball head (F). The flexible anchor rod body (B) comprises a connecting sleeve (B4), a steel strand (B1), a limit cylinder (B3) and a friction-increasing wire spring (B2); the connecting sleeve (B4) is reliably fixed to the steel strand (B1) and the wire spring (B2) by means of an extrusion manner, and the limit cylinder (B3) is sleeved on the connecting sleeve (B4). The described flexible anchor rod is not limited by the height of the tunnel, and effectively enhances the support effect. The unique anti-twist structure solves the problem of the torsion of the rod body when the flexible anchor rod is preloaded, and improves the preloading force. The anchor rod improves construction speed by means of spiral preloading, and the support efficiency is high.

Classes IPC  ?

• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits

Abrégé

A construction method for a flexible anchor rod, suitable for use in the field of coal mine tunnel support engineering. First, constructing a stepped anchor rod hole in a rock mass (A); pressing a flexible anchor rod body (B) against a solid anchoring agent and pushing same into the bottom of the stepped anchor rod hole, rotating a fixed torque nut (D) to drive the flexible anchor rod body (B) and an anti-torsion centring ball head (F) to rotate and advance together until an anchor rod drilling machine stops rotating after a flange of a limiting cylinder (B3) is tightly attached to an excavation face (A1), and then waiting for the solid anchoring agent to solidify; driving the fixed torque nut (D) to rotate and breaking the fixed torque structure of the fixed torque nut (D), such that the fixed torque nut (D) continues to screw inward along a connecting sleeve (B4) and compress an anti-friction washer (E), the anti-torsion centring ball head (F), and a tray (C), such that a stop post (C2) on the tray (C) clamps to the excavation face (A1) and prevents rotation of the tray (C), effectively preventing rotation of the anti-torsion centring ball head (F), the anti-torsion centring ball head (F) limiting the rotation of the connecting sleeve (B4) by means of a protrusion ? (F3) to thereby limit the rotation of the flexible anchor rod body (B), so that the flexible anchor rod body (B) does not rotate when the anchor rod drilling machine applies a pre-tensioning force. The present construction method has fast construction speed and high support efficiency.

Classes IPC  ?

• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits

Abrégé

A method for restoring an underground image based on a ray reverse tracing technology is disclosed. The method comprises: setting an underground camera as a light source emitting point, and emitting rays into an underground scene; recording all intersection points of all rays and underground objects, and calculating one intersection point closest to a view point in the intersection points; calculating a direction of rays newly generated after they are reflected and refracted by the objects in a position of the intersection point; respectively tracing the rays newly generated; recording rays irradiated onto a view plane after a strong light source emitted from the camera's position is reflected or refracted, and calculating the rays' light intensity; converting the light intensity into a pixel value; and eliminating the pixel value of strong light emitted from the camera to obtain the underground image.

Classes IPC  ?

• G06T 15/06 - Lancer de rayon

Abrégé

The present invention discloses a hydraulic support monitoring a support pose in real time based on an inertia measurement unit (IMU) and a detection method thereof. In the hydraulic support, IMU sensors are separately mounted on a roof beam, a rear linkage, and a base, and an auxiliary support pose monitoring system is disposed. Each IMU sensor measures movement states of the roof beam, the rear linkage, and the base of the support in real time, and the support pose monitoring system processes the movement states to monitor a support pose of the hydraulic support in real time. Especially, it can be technically determined whether the hydraulic support is adequately lowered, moved or raised, thereby effectively reducing the labor intensity of workers and improving the working efficiency of the hydraulic support.

Classes IPC  ?

• F15B 19/00 - Test des systèmes ou appareils de manœuvre utilisant la pression d'un fluide, dans la mesure où ils ne sont pas prévus ailleurs
• F15B 20/00 - Dispositions propres à la sécurité pour systèmes de manœuvre utilisant les fluides; Utilisation des dispositifs de sécurité dans les systèmes de manœuvre utilisant des fluides; Mesures d'urgence pour les systèmes de manœuvre utilisant des fluides

Abrégé

An ultra-deep underground traction system arranged in horizontal drive mode and a method of using same are provided. The traction system includes a head sheave set, a multi-rope guide pulley set, single-rope guide pulley sets, driving steel wire ropes, a driven steel wire rope, drive drum sets, a left container and a right container, and a tension balance control system. The head sheave set includes a main head sheave and an auxiliary head sheave. A left multi-rope guide pulley and a right multi- rope guide pulley are both provided on a shaft bottom of a vertical well, and central axes of the two are horizontally symmetrical. There are an even number of single-rope guide pulley sets, driving steel wire ropes, and drive drum sets. The tension balance control system is formed by a pump station, a left-side hydraulic cylinder set and a right- side hydraulic cylinder set, and an even number of reels. The reels are all provided on the bottom of the left container and two driving steel wire ropes are wound onto each reel. The right container is connected to all the driving steel wire ropes on the bottom. The present invention can significantly improve a carrying capacity of the system, and increase an enclosing angle of the driving steel wire ropes on the drums, so that friction between the driving steel wire ropes and wheels is increased. In this way, slipping of the driving steel wire ropes is prevented as much as possible and abrasion thereof is decelerated. The traction system of the present invention has a simple structure and high reliability.

Classes IPC  ?

• B66D 1/50 - Dispositifs de commande automatiques pour maintenir une tension prédéterminée de la corde, du câble ou de la chaîne, p.ex. pour des cordes ou des câbles de remorqueur, des chaînes d'ancre; Commande de la tension des câbles de treuils de touage ou d'amarrage

Abrégé

The present disclosure provides a location and attitude sensing device of a propelling rod of a hydraulic support of a fully mechanized face, a mechanism for the propelling rod and a method thereof. The sensing device includes a fully mechanized mining face comprising hydraulic support bases. A propelling rod of each hydraulic support base is connected to a middle pan of a scraper conveyor. A left location and attitude sensing unit and a right location and attitude sensing unit configured to sense the location and attitude of each propelling rod are respectively disposed on a left and a right side of the propelling rod. A central signal processing unit senses an offset extent of the propelling rod according to a shift fed back by the left location and attitude sensing unit and a shift fed back by the right location and attitude sensing unit, and performs adjustment through an actuator.

Classes IPC  ?

• E21D 23/18 - Caractéristiques hydrauliques ou pneumatiques, p.ex. circuits, disposition ou adaptation de soupapes, dispositifs de mise en place ou de retrait des mécanismes d'avance
• E21D 23/26 - Commande hydraulique ou pneumatique

Abrégé

A tension balance system for steel wire ropes on a friction hoisting driving end of an ultra-deep well is provided. The system comprises a friction wheel, left and right guiding wheels, left and right steel wire ropes, left and right adjustment wheels, left and right rewinding wheels, left and right adjustment oil cylinders, a hydraulic pipeline, a pump station, a pipeline switch group, left and right hoisting containers, balance ropes, and reels. The friction wheel is disposed in a middle of the system, and the wheels are circularly distributed around the friction wheel. The guiding wheels, the adjustment wheels, and rewinding wheels are all symmetrically disposed on two sides of the friction wheel. The adjustment wheels are connected to adjustment oil cylinders to perform radial driving where each moves in a radial direction of the friction wheel.

Classes IPC  ?

• B66B 7/06 - Aménagements des câbles ou filins
• B66B 7/10 - Aménagements des câbles ou filins pour égalisation de la tension des câbles ou des filins
• B66B 15/08 - Mécanismes d'entraînement

Abrégé

A circular distribution type friction hoisting system for an ultra-deep vertical shaft is provided. The system includes a friction wheel, a left guide wheel, a right guide wheel, a left hoisting container, a right hoisting container, balance ropes, a tension adjusting system, composite wheel sets, steel wire ropes, reels and a steel wire rope clip, where the composite wheel sets are circularly distributed around the friction wheel, and tension of the steel wire ropes is adjusted by adjusting locations of composite wheels in the composite wheel sets. The system of the present disclosure may help reduce bending stress of friction wheel shafts.

Classes IPC  ?

• B66B 7/10 - Aménagements des câbles ou filins pour égalisation de la tension des câbles ou des filins
• B66B 7/06 - Aménagements des câbles ou filins

Abrégé

A wall continuous mining and continuous filling water-preserved coal mining method, and a water resource migration monitoring and water disaster early warning method. In the coal mining method, a normal wall working face is divided along the strike direction into "mining-filling" and "mining-retaining" mining blocks alternately arranged; no coal pillar is retained between mining roadways in a "mining-filling" mining block (1), and a roadway with the excavation completed is filled; narrow coal pillars (10) are retained between mining roadways in a "mining-retaining" mining block (2), and a roadway with the excavation completed is not filled.In the early warning method, an infrared thermal imaging system is used for observing surface infrared radiation information of an excavation space, and predicting and forecasting a dynamic disaster such as backfill object or narrow coal pillar instability. An water resource migration monitoring and water disaster early warning system is used for comprehensive monitoring, early warning, and reasonable evaluation of water resource loss in a mining area caused by coal mining and water disasters easy to occur in a mining stope.

Classes IPC  ?

• E21C 41/18 - Procédés d'exploitation minière souterraine; Tracés à cet effet pour la lignite ou le charbon
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme

Abrégé

Disclosed in the present invention is a infrared radiation quantitative characterization method for the damage evolution of coal-bearing rocks. In the present method, the maximum value of an infrared radiation temperature change matrix of coal rocks is referred to as a threshold value for infrared radiation change of the coal-bearing rock due to microelement damage. The cumulative count of infrared radiation during the damage evolution process of the coal-bearing rock is screened. The infrared radiation quantitative characterization method for the damage evolution of coal-bearing rocks is constructed on the basis of the theory of continuous damage mechanics. By means of monitoring infrared radiation data in real time, the real-time process of the damage evolution of coal rock masses may be dynamically and accurately evaluated, which thereby improves mine safety production levels, and improves the stability and accuracy of coal rock mass monitoring in the field of modern rock mechanics and engineering.

Classes IPC  ?

• G01V 8/02 - Prospection

Abrégé

Provided is a monitoring system for bearing compression rate of filling body (5) in coal mine goaf and a monitoring method thereof, according to the position of the buried depth of a goaf filling body (5), a ground information processing system (1), a ground seismic focus control system (2) and a ground monitoring system (3) are arranged on the ground, wherein shock with certain strength is generated by the ground seismic focus control system (2) , and a signal is sent to the filling body (5); according to the difference of the elasticity of the filling body (5) under different compaction degrees, reflected waves (4) received by the ground monitoring system (3) are different, and finally, data is transmitted to the ground information processing system (1) to be processed. After the goaf is filled with the filling body (5), monitoring is started, with the change of time, the filling body (5) is gradually compacted, monitoring is conducted till the thickness of the filling body (5) is not changed any more, and finally, the bearing compression rate of the filling body (5) is calculated through a bearing compression rate formula.

Classes IPC  ?

• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme
• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond

Abrégé

The present invention provides a system and method for remotely locating a communication error support for hydraulic supports. The system includes a control panel, a support controller, a data converter, and two support drivers of the same type. Each support driver has two bus interfaces. The control panel transmits a control command to the data converter in a form of a WiFi signal. The data converter converts the WiFi signal into a message signal and transmits the message signal to the support controller. The support controller transmits the control command to the two support drivers, respectively. The support drivers transmit the command through CANH twisted pairs and CANL twisted pairs. When a bus for transmitting the command of a certain node has an error, the and feeds back the fault node onto the control panel.

Classes IPC  ?

• H04W 4/12 - Messagerie; Boîtes aux lettres; Annonces
• H04W 92/02 - Dispositions d'interréseautage
• E21D 23/12 - Commande, p.ex. en utilisant une télécommande
• E21F 17/00 - Procédés ou dispositifs destinés à être utilisés dans les mines ou tunnels, non couverts ailleurs
• H04L 12/413 - Réseaux à ligne bus avec commande décentralisée avec accès aléatoire, p.ex. accès multiple avec détection de porteuse et détection de collision (CSMA-CD)

Abrégé

A multilevel deep well cooling and geothermal utilization system and process. The system comprises a deep well heat harnessing system (1), a shallow part heat- exchanging system (2), and a high-temperature water lifting system (3). The deep well heat harnessing system (1) comprises a heat absorbing pipe (5), a thermally-conductive fluid lifting pipe (6-2), a thermally-conductive fluid lowering pipe (6-1), temperature sensors (7-1 and 7-2), and a water pump (9). The shallow part heat-exchanging system comprises a heat-dissipating pipe (11), a heat- storing water pool (10), a water intake pump (12-1), a water intake valve (13-1), a temperature sensor (7-3) and a liquid level meter (14). The high-temperature water lifting system comprises a water discharging pump (12-2), a flowmeter (8-2), a water discharging valve (13-2), and a high- temperature water lifting pipe (15). The system is structurally simple, can be used for an extended time, utilizes multiple levels of mine shafts for continuous cooling, provides significant effects, a broad cooling range, a high geothermal utilization rate, and a low unit energy consumption, effectively solves the problem of overheating of a deep well coal-mining face, and provides a comfortable working environment for underground workers.

Classes IPC  ?

• E21F 3/00 - Refroidissement ou séchage de l'air
• F24T 10/30 - Collecteurs géothermiques utilisant des réservoirs souterrains pour l’accumulation des fluides vecteurs ou des fluides intermédiaires

Abrégé

A device and method for testing load-carrying properties of a wire rope for a friction hoist. The testing device comprises two loaded hydraulic cylinders (1), a hydraulic cylinder locating platform (2), a wire rope locating platform (6), a surrounding angle locating device (4) provided on a linear segment of the wire rope locating platform (6) in the vertical direction, and a plurality of wire rope locating devices (5) provided on an arc segment of the wire rope locating platform (6) in the radial direction. A practical friction hoisting process is simulated on the basis of the principle of driving a wire rope (3) and a two-way hydraulic pump (5-b) by the double-acting hydraulic cylinders (1) to provide load damping, the working conditions such as overload and secondary overload can be simulated for the loading of the hydraulic cylinders (1), and a creeping process of the wire rope (3) in a surrounding arc can be simulated for the providing of the load damping by the hydraulic pump (5-b), so that the load-carrying properties of the wire rope (3) can be accurately tested, and the test requirements of friction hoists having different drum diameters and different surrounding angles can be met.

Classes IPC  ?

• G01N 3/10 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression engendrés par pression pneumatique ou hydraulique

Abrégé

A method for determining the internal stress of a solid-cut-and-fill material, characterized by comprising the following steps: step 1), acquiring solid-cut-and-fill material stress data, and fitting a stress-strain relationship of the solid-cut-and-fill material; step 2), on the basis of the equivalent mining height theory and the probability integral method, calculating a surface subsidence amount of a solid-cut-and-fill region; step 3), calculating, in cases of solid-cut-and- fill coal mining, an expansion height of a fissure zone in the region; step 4), in combination with steps 2) and 3), calculating the internal strain of the solid-cut-and-fill material at a position distanced from the rear of a stope by L; and step 5), calculating an internal stress of the solid-cut-and-fill material at the position distanced L from the rear of a working face. Said method is a method for calculating a stress of a cut-and-fill body in solid- cut-and-fill coal mining. The method is simple and practical, is usable for calculating surrounding rock stress distribution in solid- cut-and-fill mining, provides guidance for designs of cut-and-fill mining and supporting, enriches the mine pressure theoretical system in cut-and-fill mining, and is of great importance.

Classes IPC  ?

• G01V 9/00 - Prospection ou détection par des procédés non prévus dans les groupes
• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond

Abrégé

The present invention provides a single-anchor centrally grouted full-length anchored steel wire bundle and a supporting method thereof, which are suitable for use in supporting engineering for the deep dynamic pressure roadway or soft rock roadway. The steel wire bundle consists of parallel steel wires and a central pipe, wherein multiple strands of parallel steel wires are arranged around the central pipe, the central pipe is provided with a slurry output bracket which divides the parallel steel wires into a front part and a rear part, the front part is provided with large stirring jackets, and the rear part is provided with a threaded casing on its tail end. After the coal is cut by a tunneling machine and a roadway is formed, the steel wire bundle is anchored at the ends, and the roadway tunneling speed is increased on a premise of ensuring roadway safety; central grouting is carried out for the steel wire bundle with a pump truck without affecting the quick roadway tunneling, so as to anchor the steel wire bundle in full length and ensure long-time stability of the roadway. The length of the steel wire bundle may be selected according to the geological conditions and the mining environment of the mine, and is not limited by the height of the roadway; the single-anchor centrally grouted supporting method realizes full-length anchoring of the steel wire bundle, and it not only improves the roadway tunneling speed and relieves mining imbalance in the mine, but also solves the problem of large deformation of the roadway.

Classes IPC  ?

• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits
• E21D 20/00 - Mise en place des boulons d'ancrage

Abrégé

The present invention relates to the technical field of mine tunnel surrounding rock control, and provides a method for predicting mine strata pressure behavior data of a stoping tunnel. The method comprises performing nonlinear regression on an actual difference value of a series of mine strata pressure behavior data by using a prediction variation model of the mine strata pressure behavior data to obtain a determined function expression of a change speed and a cumulative variation of the mine strata pressure behavior data of the stoping tunnel, so as to obtain mine strata pressure behavior features of the stoping tunnel. By means of the method for predicting the mine strata pressure behavior data of the stoping tunnel, the mine strata pressure behavior features of the stoping tunnel can be quickly and efficiently predicted, and the application range is wide.

Classes IPC  ?

• G06Q 10/04 - Prévision ou optimisation spécialement adaptées à des fins administratives ou de gestion, p. ex. programmation linéaire ou "problème d’optimisation des stocks"
• G06Q 50/02 - Agriculture; Pêche; Exploitation minière

Abrégé

A mine exploitation method based on stopping, separation and filling control is disclosed. The method comprises: deploying a gangue-less coal mining system; choosing a suitable coal and gangue separation method according to a separation requirement; choosing a suitable filling method according to mine geology, production conditions and rock stratum control requirement; reversely calculating a filling rate according to gangue discharge requirement and control indexes by utilizing theoretical calculation, simulation and experiment; determining a filling process and a separation process according to the filling rate; and feeding back and adjusting the filling process and separation process parameters by monitoring filling and control effect indexes.

Classes IPC  ?

• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond
• E21C 41/18 - Procédés d'exploitation minière souterraine; Tracés à cet effet pour la lignite ou le charbon
• E21F 15/06 - Remblayage mécanique

Abrégé

A porous medium permeability prediction method based on machine image intelligent learning is disclosed. The method comprises: selecting multiple groups of a same porous medium material with different dry densities, and determining an actual permeability of each group; performing SEM scanning on each group to obtain an SEM image thereof, and calculating gray average, gray variance, image energy, image entropy and fractal dimension of each SEM image; performing training and learning on the five image feature parameters of each SEM image and the corresponding actual permeability thereof by adopting a neural network model of an extreme learning machine, and determining the change relationship between the five image feature parameters and the actual permeability; and during prediction, inputting the parameters of the SEM image with unknown permeability, and predicting the permeability of the porous medium material by the neural network model of the extreme learning machine.

Classes IPC  ?

• G01N 15/08 - Recherche de la perméabilité, du volume des pores ou de l'aire superficielle des matériaux poreux
• G16C 20/70 - Apprentissage automatique, exploration de données ou chimiométrie
• G16C 60/00 - Science informatique des matériaux, c. à d. TIC spécialement adaptées à la recherche des propriétés physiques ou chimiques de matériaux ou de phénomènes associés à leur conception, synthèse, traitement, caractérisation ou utilisation

Abrégé

A method and process for quality improvement by means of optimally cooperating brown coal drying and dry separation, said method comprising: before production, selecting, according to the content ratio of ash to moisture, a relational expression between the calorific value and the degree of metamorphism, moisture content and ash content of coal, to pre-estimate the calorific value of the coal; and performing cost estimation by combining a relational expression between production cost and the ash content and moisture content, so as to determine the degree of deashing and dehydrating, and selecting a pre-treatment process for ash reduction and quality improvement of brown coal, and using a process of first performing dry separation and then performing drying. The method and process of the present invention has a high separating efficiency, meets the demand of selected raw coal on external moisture in a dry separating operation, achieving a high drying efficiency, and reducing the production cost.

Classes IPC  ?

• F26B 3/00 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur
• B03B 9/00 - Disposition générale d'un atelier de séparation, p.ex. schéma opératoire
• C10L 5/04 - Matière première à utiliser; Son prétraitement
• C10L 9/00 - Traitement des combustibles solides en vue d'améliorer leur combustion
• F26B 21/00 - Dispositions pour l'alimentation ou le réglage de l'air ou des gaz pour le séchage d'un matériau solide ou d'objets

Abrégé

An initial alignment system and method for strap-down inertial navigation of a shearer based on an optical flow method, comprising an explosion-proof box, a strap- down inertial navigation system, a processor, and a camera. The strap-down inertial navigation system and the processor are mounted in the explosion-proof box. The camera is fixed on a hydraulic support at one side of the shearer by means of the fixed support. A moving image of the shearer is photographed by the camera, and the motion direction and the actual velocity over ground of the shearer are obtained in combination with the optical flow technology. Then, a multi-vector attitude determination equation is derived from a specific force equation of the strap-down inertial navigation. The present invention uses external velocity assistance without the need for a coarse alignment stage to achieve accurate initial alignment of a movable base of the strap-down inertial navigation.

Classes IPC  ?

• E21C 35/08 - Guidage de la machine
• G01C 21/16 - Navigation; Instruments de navigation non prévus dans les groupes en utilisant des mesures de la vitesse ou de l'accélération exécutées à bord de l'objet navigant; Navigation à l'estime en intégrant l'accélération ou la vitesse, c. à d. navigation par inertie
• G01C 25/00 - Fabrication, étalonnage, nettoyage ou réparation des instruments ou des dispositifs mentionnés dans les autres groupes de la présente sous-classe

Abrégé

A fracturing relief method for stress concentration of remaining ore pillars in an overlying goaf is disclosed. The method comprises performing directional fracturing on a roof to optimize the roof's stress and reduce the source of force; performing pulse fracturing on a coal pillar to produce a crack network, weaken the coal pillar's stiffness and reduce its bearing capacity; and performing pulse fracturing on the pillar' s floor strata to reduce the ability of transferring stress concentration thereof. A drilling machine is used for separately constructing fracturing drill holes in a roadway to a set depth at an interval in a direction oblique to the pillar in an upper goaf. The roof, pillar and floor can be fractured by an oblique fracturing hole in a sublevel retreating manner. The position of the directional fracturing of the roof is approximately 1 m above the middle of a main roof above the pillar.

Classes IPC  ?

• E21C 45/04 - Moyens pour produire des jets de fluide pulsés en utilisant des liquides à haute pression

Abrégé

The present invention discloses a water retention method for promoting self- healing of mining fractures by chemically softening carbonatite, which is suitable for the technical fields of water resource protection and mine water hazard prevention and treatment in coal mining. Information of the distribution range of a water-conducting fractured zone in overlying strata that communicates with a water-bearing layer in stratum and information of a rock stratum with rich carbonatite mineral in a mining area are determined; in the mining area, a drill hole is constructed from the ground surface to a target rock stratum with rich carbonatite mineral within the range of the water-conducting fractured zone and below the water-bearing layer in stratum, a softener is injected to the fractures in the target rock stratum through the drill hole, to fully react with the carbonatite mineral in the target rock stratum to soften the carbonatite, so as to drive the tension fractures in the rock mass to close gradually under the action of the stress in the mining stratum, to decrease the water conducting ability of the tension fractures, and thereby to artificially promote self-healing of the mining fractures and realize protection of the underground water-bearing layer. The method has simple steps, can attain a reliable effect, and is highly practical.

Classes IPC  ?

• E21D 11/38 - Imperméabilisation à l'eau; Calorifugeage; Imperméabilisation acoustique; Isolation électrique

Abrégé

The present invention discloses a TRC folded assemble-type permanent formwork and a manufacturing method thereof, and belongs to the technical field of reinforced concrete building construction. The assemble-type permanent formwork comprises a woven fabric net, FRP rib hooks, and a plurality of molds; the plurality of molds are arranged and fixed on the woven fabric net in a spaced manner, the distance between the plurality of the molds is the distance that makes the molds be folded to a right angle with respect to each other, each mold is filled with high-performance fine concrete for reinforcing the woven fabric net, and the woven fabric net is presented as a continuous whole piece without interruption when the modes are assembled into a permanent formwork, which can fully exert the hoop effect; the woven fabric net and the FRP rib hooks work together at the connections, which can ensure strength and durability of the connections; the TRC folded assemble-type permanent formworks can be arbitrarily assembled into beam, board, column formwork as required in construction site, and the bonding property of cast-in-place concrete and the formworks can be improved by the grooves in the inner surfaces of the formworks. The formwork can be folded in storage, is flexible and versatile, simple to manufacture and convenient to use, and can be manipulated easily.

Classes IPC  ?

• E04G 11/00 - Coffres, coffrages ou faux œuvre pour la fabrication des murs, planchers, plafonds ou toits
• B28B 1/14 - Fabrication d'objets façonnés à partir du matériau par simple coulée, le matériau n'étant ni alimenté sous pression, ni réellement compacté
• B28B 7/02 - Moules à éléments réglables
• B28B 23/02 - Aménagements spécialement adaptés à la fabrication d'objets façonnés avec des éléments complètement ou partiellement enrobés dans le matériau de moulage dans lesquels les éléments enrobés sont des renforcements
• E04B 2/86 - Murs réalisés par moulage, coulage ou compactage sur place dans des coffrages permanents
• E04G 11/08 - Coffrages devant être totalement démontés après la pose du béton et remontés pour la coulée suivante

Abrégé

A multi-stage multipurpose hydraulic pressurizer with a variable pressurization rate is provided. The pressurizer comprises a multi-stage pressurizing structure part, a hydraulic oil loop having a control part, and a pressurizing fluid loop having a control part. The multi-stage pressurizing structure comprises a hydraulic cavity, a first-stage pressurizing cavity, a second-stage pressurizing cavity and a third-stage pressurizing cavity. The hydraulic oil loop comprises an electromagnetic stroke limit switch, a three-position four-way electromagnetic reversing valve, a controller, a hydraulic oil inlet and a hydraulic oil return port. The pressurizing fluid loop comprises a one-way valve, a hydraulic control one-way valve, a two-position two-way electromagnetic reversing valve, a pressurizing fluid inlet, a non-pressurizing-fluid outlet and a pressurizing fluid outlet. The multi-stage multipurpose hydraulic pressurizer can output high-pressure fluids, either water or hydraulic oil, with different pressurizing rates under the action of the multi-stage structure part, dispensing the need to change pressurizers.

Classes IPC  ?

• F15B 3/00 - Amplificateurs ou convertisseurs de pression de fluide, p.ex. échangeurs de pression; Transmission de la pression d'un système à fluide à un autre, sans contact entre les fluides

Abrégé

The present invention discloses a dynamic identification and control parameter re-correction system and method, comprising a data acquisition module, an online dynamic model identification module for the permanent magnet short-range drive system, a control parameter re- correction module and a main control system; wherein, in the operation of the permanent magnet short- range drive system of a coal cutter, after acquiring the operating data of the drive system in real time by the data acquisition module and identifying the acquired operating data by the online dynamic model identification module for permanent magnet short-range drive system, the identified result is input to the control parameter re-correction module, the control parameter re-correction module corrects the control parameters in real time, so that the real-time control parameter is matched with parameter required for actual operation, then the main control system regulates and controls the permanent magnet short-range drive system according to the correct control parameters, thereby achieving the expected control effect, improving the cutting efficiency, saving energy, decreasing failure rate and ensuring safe and reliable operation of the cutting unit of a coal cutter.

Classes IPC  ?

• G05B 17/02 - Systèmes impliquant l'usage de modèles ou de simulateurs desdits systèmes électriques
• B60W 60/00 - Systèmes d’aide à la conduite spécialement adaptés aux véhicules routiers autonomes
• E21C 35/24 - Télécommande spécialement adaptée aux machines pratiquant des saignées ou libérant complètement la matière minérale

Abrégé

A self-carrying abrasive type hydraulic slotting drill bit comprises a drill bit and cutting heads installed on the periphery of the top of the drill bit, the drill bit is composed of a drill bit outer wall and a drill bit cavity, and a low pressure cooling water flow system and high pressure cutting water flow system, a high pressure water-sand mixture production and abrasive adding system, and a high and low pressure water shunt control system are arranged in the drill bit cavity.

Classes IPC  ?

• E21B 7/18 - Forage par action de jets de liquides ou de gaz, avec ou sans entraînement de grenaille

Abrégé

Disclosed is a method for protecting/purifying water by recharging iron-containing sewage into a stratum destroyed by coal mining. According to the method, iron-containing sewage recharging holes and oxygen-containing water/weak alkali water recharging holes are drilled in the ground surface corresponding to the boundary and middle of a mining area, respectively; mining-induced fractures are effectively blocked by means of Fe(OH)3 flocculation sediments generated by the oxidation reaction between iron components in the iron-containing sewage and the oxygen-containing water/weak alkali water. The generated Fe(OH)3 flocculates can gradually precipitate within a certain range near the recharging holes to form an iron active filter membrane, so that a catalyst effect is achieved on the oxidation reaction of iron or ferrous ions, thereby effectively ensuring an iron removal effect. Iron components in a water resource gushing from a low-lying position in a downhole mined-out area are tested; if the iron components still exceed the standard, the downhole gushing water is delivered to a relatively high-lying position by means of pipelines and recharged into the water-containing layer of the stratum again by means of downhole inclined construction holes to continue oxidation reaction and iron removal; and if the iron components of the downhole gushing water do not exceed the standard, the water is directly delivered to other mining areas or to the ground for reuse.

Classes IPC  ?

• E21B 33/138 - Plâtrage de la paroi du trou de forage; Injections dans la formation
• C02F 1/72 - Traitement de l'eau, des eaux résiduaires ou des eaux d'égout par oxydation
• E21F 16/00 - Drainage

Abrégé

Disclosed are an integral clamping steel strand drawing test apparatus, and a method for using same, wherein same are suitable for use in a steel strand mechanical property test. The apparatus comprises a rectangular lower base (13) and a rectangular upper base (14), with a hydraulic telescopic mechanism being provided between the lower base (13) and the upper base (14), the hydraulic telescopic mechanism being provided with an integral clamping mechanism, a steel strand test piece (4) to be tested being provided in the integral clamping mechanism, the steel strand test piece (4) to be tested being provided with a plurality of binding protective devices (2), and a safety protection door (16) being provided outside the hydraulic telescopic mechanism. During a steel strand drawing test, the property of a steel strand itself is fully brought into play, and the integrity of the steel strand test piece (4) is maintained, thereby being able to accurately reflect various mechanical properties of the drawn steel strand while preventing damage to the device and injuring an operator caused by a fracture in a single strand or a plurality of strands of the steel strand during the test. The device is simple and easy to operate, and has good practicability and promotional and application value.

Classes IPC  ?

• G01N 3/10 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression engendrés par pression pneumatique ou hydraulique

Abrégé

A device and method for testing the working performance of an anchor rod cable by simulating stratum fracture and separation on the basis of electromagnetic action, applicable to the technical field of testing working performance of anchor rod cables by simulating a tunnel field. The device comprises a top base (1) and a bottom base (2); a plurality of hydraulic vertical columns (3) are provided between the top base (1) and the bottom base (2); the plurality of hydraulic vertical columns (3) are provided thereon with clamping devices, and an electromagnetic block (9) is disposed between two groups of drawing block-shaped clamp holders (4). Using the attraction and repulsion forces of the electromagnetic block (9), the laminated electromagnetic block generates the separating or fracturing effect in a loading process so as to simulate the interaction between surrounding rock and an anchor rod cable test piece (8) in the field and accurately record various performance parameters of a working status of the anchor rod cable test piece (8), thereby providing positive guidance for directing field work.

Classes IPC  ?

• G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
• G01N 3/06 - Adaptations particulières des moyens d'indication ou d'enregistrement
• G01N 3/10 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression engendrés par pression pneumatique ou hydraulique

Abrégé

Disclosed is a reliability robust design method for multiple failure modes of an ultra-deep well hoisting container. The method comprising 1) defining randomness of a structural parameter, a material property, and a dynamic load of a hoisting container, and solving a random response of a structural failure for a random parameter by using a design of experiment method; 2) establishing reliability performance functions of each failure modes in accordance with corresponding failure criterion of the hoisting container; 3) establishing a joint probability model of correlated failures by using a copula theory in consideration of probability correlation between the failure modes; 4) establishing, in conjunction with the joint probability model, a system reliability model with failure correlation of the hoister container; 5) establishing a sensitivity model concerning each random parameter for system reliability of the hoisting container; and 6) establishing, in conjunction with an optimization design model, a reliability robust optimization design model for the hoisting container by using a joint failure probability and parameter sensitivity as constraints.

Classes IPC  ?

• G06F 30/17 - Conception mécanique paramétrique ou variationnelle
• G06F 30/20 - Optimisation, vérification ou simulation de l’objet conçu
• B66B 17/08 - Bennes de mine
• E21F 13/00 - Transport spécialement adapté aux conditions du fond

Abrégé

The present invention discloses a synchronous monitoring device and method for radial and axial vibration of a shearer drum. The monitoring device comprises a laser, a first optical fiber coupler, an optical isolator, a second optical fiber coupler, a third optical fiber coupler, an optical fiber collimator, a first photodetector. a second photodetector, a first signal processing module, and a second signal processing module which are disposed on a shearer ranging arm, as well as a reflective coating disposed on a shearer drum. By measuring a phase difference between original light and reflected light, axial vibration of the shearer drum is monitored, and by measuring an intensity difference between original light and reflected light, radial vibration of the shearer drum is monitored.

Classes IPC  ?

• G01H 9/00 - Mesure des vibrations mécaniques ou des ondes ultrasonores, sonores ou infrasonores en utilisant des moyens sensibles aux radiations, p.ex. des moyens optiques

Abrégé

A gas-powder separation three-phase jet flow fire monitor system is disclosed, including a gas-powder separation three-phase fire monitor head, a filter, a nitrogen pressurization apparatus and a dry powder tank. The dry powder tank is connected to a powder feeding pipe of the gas-powder separation three-phase fire monitor head. A nitrogen outlet pipe of the gas-powder separation three-phase fire monitor head is connected with one end of the nitrogen pressurization apparatus through the filter. The other end of the nitrogen pressurization apparatus is connected with the dry powder tank. A cyclone separation apparatus of a dry powder pipeline of the fire monitor may separate nitrogen from conveyed ultrafine dry powder to enable the ultrafine dry powder to be fully mixed with a water-based fire extinguishing agent. The separated nitrogen enters the dry powder tank for recycling after being pressurized by the pressurization apparatus, thereby reducing the fire extinguishing cost.

Classes IPC  ?

• A62C 31/00 - Emission de substances extinctrices

Abrégé

A testing system for measuring loss of soil particles with different particle sizes in a water inrush process in real time, used for researching influences of particle sizes in the water inrush process. The system mainly comprises: a vibration screening apparatus for screening the soil particles lost in the water inrush process by means of vibrating; a water collecting apparatus for collecting water flowing out in the water inrush process, measuring the mass of water and transmitting the measured mass of water to a collecting and calculating apparatus; a conveying apparatus used for conveying screened soil particles to a weighing apparatus; the weighing apparatus used for weighing the screened soil particles and transmitting the measured weight of the screened soil particles to the collecting and calculating apparatus; and the collecting and calculating apparatus used for controlling the operation of the testing system, inputting parameters and calculating data. The testing system is characterized in that the condition of particle loss in a simulated tunnel water inrush process can be automatically measured in real time, providing a basis for researching the influence caused by the particle sizes of fillings in the water inrush process of the tunnel to water inrush.

Classes IPC  ?

• G01N 5/04 - Analyse des matériaux par pesage, p.ex. pesage des fines particules séparées d'un gaz ou d'un liquide en éliminant un constituant, p.ex. par évaporation, et en pesant le reste
• G01N 1/34 - Purification; Nettoyage

Abrégé

The present invention provides a full-roadway full-process full-cross-section deformation monitoring device and a monitoring method thereof, which are applicable to the field of roadway surface deformation monitoring. A monitoring station is deployed utilizing an anchor rope, a supporting frame and a rotary laser measuring device are connected via a threaded sleeve at the tail end of the anchor rope, the rotary laser measuring device can rotate and drive a laser range finder to rotate, the data of a plurality of cross sections can be measured at the same time with one monitoring station, the data is processed by computer programming, so that the measurement data is converted into coordinates in a three-dimensional coordinate system, and thereby full-roadway full-process full-cross-section digital imaging is realized. The monitoring method attains high measuring accuracy, involves very low artificial error, supports intuitive observation of dynamic roadway deformation condition, can provide accurate warning for roof pressure condition, and provides a technical guarantee for safety of the downhole workers.

Classes IPC  ?

• E01C 23/01 - Dispositifs ou moyens auxiliaires préalables à la mise en place d'un nouveau revêtement ou pour en vérifier la configuration, p.ex. gabarits, supports de guide d'arasement; Applications des appareils de mesure, d'indication d'enregistrement de la configuration de surface d'un revêtement existant, p.ex. profilographes
• E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme
• G01C 7/06 - Tracé de profils de cavités, p.ex. de tunnels

Abrégé

A method for recognizing network text named entities based on neural network probability disambiguation comprising: carrying out word segmentation on an unlabeled corpus, using Word2Vec to extract a word vector; converting a sample corpus into a word feature matrix and windowing same; building a deep neural network to carry out training, and adding a softmax function into an output layer of the neural network to carry out normalization processing, so as to obtain a probability matrix of the named entity category corresponding to each word; and re-windowing the probability matrix, and using a conditional random field model to carry out disambiguation, so as to obtain a final named entity annotation. A probability disambiguation method is used in order to deal with the problems of a nonstandard grammatical structure and many wrongly written characters in the network text.

Classes IPC  ?

• G06F 40/279 - Reconnaissance d’entités textuelles
• G06N 3/02 - Réseaux neuronaux

Abrégé

A self-detection device for a middle trough of a scraper conveyor and a detection method is disclosed. The device comprises a frame, a baffle hoist conveyor. a horizontal conveyor, a loading hopper, an unloading hopper, and a sliding friction mechanism. A liner and an eccentric motor are mounted in the sliding friction mechanism. The eccentric motor is slidably connected to a scraper through a slide bar. The scraper is disposed on the liner, and an impact force sensor is disposed on the scraper. A pull-pressure sensor is mounted on the slide bar. The self- detection device for a middle trough can simulate the wear behavior from impact and friction between a scraper and a middle trough of a scraper conveyor, and can measure in real time an impact force applied to the scraper as materials fall and a frictional force between the scraper and the liner and a friction factor.

Classes IPC  ?

• B65G 43/02 - Dispositifs de commande, p.ex. de sécurité, d'alarme ou de correction des erreurs détectant une condition physique dangereuse des porte-charges, p.ex. pour stopper l'entraînement en cas d'échauffement
• B65G 19/28 - Augets, canaux ou conduits
• G01N 3/56 - Recherche de la résistance à l'usure ou à l'abrasion
• G01N 5/04 - Analyse des matériaux par pesage, p.ex. pesage des fines particules séparées d'un gaz ou d'un liquide en éliminant un constituant, p.ex. par évaporation, et en pesant le reste

Abrégé

The present invention discloses a reliability evaluation method for a hoist main shaft of a kilometer-deep mine considering multiple failure modes. First, a parametrical three-dimensional model of the main shaft is established according to physical dimensions of the main shaft. Then, a sampling matrix for random variables of the main shaft is established according to probability types of the random variables, and strength and stiffness responses of the main shaft are solved using the sampling matrix with a finite element method. Afterwards, an explicit function defining a relationship between the responses and the matrix for the random variables is established using a neural network approach, and explicit performance functions in a strength failure mode and in a stiffness failure mode are separately established according to strength and stiffness design criteria; and then, probabilities of these two failures are calculated by means of a saddlepoint approximation method. Finally, a joint failure probability model combining the two failure modes is established using a Clayton copula function, and system reliability in the case of a joint failure is solved using a bound reliability method. The present invention considers probability correlation between a strength failure and a stiffness failure, and can more accurately and reasonably evaluate system reliability of the hoist main shaft.

Classes IPC  ?

• G01N 3/00 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique
• B66B 15/02 - Supports de corde ou de câble
• B66D 1/30 - Tambours ou cylindres pour cordes, câbles ou chaînes
• F16C 3/00 - Arbres; Manivelles; Vilebrequins; Excentriques
• G06N 3/02 - Réseaux neuronaux

Abrégé

A stress-transfer method in tunnel with high ground pressure based on fracturing ring is provided. Fracturing is conducted by drilling holes and an artificial weakened zone (fracturing ring) is formed in surrounding rocks. A concentrated high-stress in tunnel is transferred to a harmless area by unloading, stress-interruption and stress-yielding. The artificial weakened zone absorbs shock wave and controls the influence of deformation of the surrounding rocks caused by loading. The fracturing ring is the weakened zone with an inner protective circle. The fracturing ring with a small width is called the cutting and interruption circle and the cutting or interruption arc. The protective circle's radius is determined by setting a width of safety coal pillar barriers at the edge of a support body. The cutting and interruption arc should be close to or be located at the boundary between a plastic zone and a crushing zone of a coal pillar.

Classes IPC  ?

• E21D 9/00 - Tunnels ou galeries, avec ou sans revêtements; Procédés ou appareils pour leur exécution; Tracé des tunnels ou des galeries
• E21B 43/26 - Procédés pour activer la production par formation de crevasses ou de fractures

Abrégé

The present invention discloses a device and method for adjusting tension of a steel wire rope of an ultra-deep vertical shaft at a hoisting-container-end. The device includes two stages of steel wire rope tension adjusting devices provided on a hoisting container, where a primary steel wire rope tension adjusting device includes left and right steel wire rope tension adjusting devices that are symmetrically arranged, and a secondary steel wire rope tension adjusting device is provided below the primary steel wire rope tension adjusting device. By use of two stages of steel wire rope tension adjusting devices, tension on four steel wire ropes can be adjusted to equalize the tension, thus meeting the requirement for tension equalization in a hoisting process. The four steel wire ropes are equally divided into two groups. Tension of two steel wire ropes is adjusted by rotating a primary drum around which the two steel wire ropes are wound, and then tension of the four steel wire ropes is adjusted by rotating a secondary drum around which the multiple steel wire ropes are wound, thus achieving a final purpose. The device of the present invention has a simple structure, and is conveniently mounted and easily detached. The tension is automatically adjusted by rotating the drums. This solution is novel and has wide application.

Classes IPC  ?

• B66B 7/10 - Aménagements des câbles ou filins pour égalisation de la tension des câbles ou des filins

Abrégé

Proposed in the present invention is a new wireless electric energy transmission magnetic path coupling mechanism, comprising: a primary side energy emission cushion and a secondary side energy collection cushion arranged opposite and in parallel with each other. The primary side energy emission cushion and the secondary side energy collection cushion are both of a two-layered structure, with one layer being a coil layer formed by winding a Litz wire, and the other layer being a magnetic core layer. The coil layer and the magnetic core layer are both of a centrosymmetric structure. The coil layer comprises two identical orthogonally laminated rectangular coils, and the magnetic core layer is a Sudoku-shaped grid layer comprising eight ferrite strips with the same length. The length of the ferrite strips is equal to the length of the rectangular coils. The coil layers of the primary side energy emission cushion and the secondary side energy collection cushion are opposite each other, and opposite surfaces of the primary side energy emission cushion and the secondary side energy collection cushion are in mirror symmetry with each other. The mechanism has a higher coupling coefficient, and a wider deviation allowance range can be simultaneously provided in three directions, such as two horizontal directions perpendicular to each other and a direction of rotation around a central axis of the mechanism.

Classes IPC  ?

• H01F 38/14 - Couplages inductifs
• H01F 27/28 - Bobines; Enroulements; Connexions conductrices

Abrégé

A method for determining a physical similarity simulation material of a solid backfill body is provided. A compaction test is run on a gangue backfill body to obtain a .epsilon.-.sigma. curve regarding the backfill body in a compaction process. An unconfined compression test is separately run on backfill blocks made of thin wood board, sponge, and paper sheet in different proportions for physical similarity simulation, to obtain .epsilon.i-.sigma.j curves regarding the backfill blocks in the compression process. A sum of squared errors .SIGMA. (.epsilon.i - .epsilon.0)2 is introduced to separately calculate a sum of squared errors of the backfill block and that of the backfill body to determine an error between .epsilon. - .sigma. curves regarding the test block and the backfill body. A backfill block for which the sum of squared errors is less than 0.5 is determined as a physical similarity simulation material of the backfill body.

Classes IPC  ?

• G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression

Abrégé

An apparatus for prestressing a concrete floor of an inclined shaft wall is provided, comprising two end bearing components, a corrugated pipe, a tension bearing rod piece and two anchor heads. The tension bearing rod piece comprises a left and right tension bearing rods connected via a loading mechanism and passes through the corrugated pipe. The two end bearing components are respectively arranged at the left and right ends of the tension bearing rod piece. The two anchor heads respectively lock the left and right end bearing components. Before pouring the shaft wall's floor, the loading apparatus is pre-buried. After the floor concrete's strength increases to certain extent, a transverse prepressing stress is applied to the floor concrete through the loading mechanism. An internal space of the loading apparatus is blocked by grouting to integrate the tension bearing component, the loading apparatus and the like with the floor concrete.

Classes IPC  ?

• E21B 49/00 - Test pour déterminer la nature des parois des trous de forage; Essais de couches; Procédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits
• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits

Abrégé

Automatic straightening device and method for a scraper conveyor on a fully- mechanized coal mining face based on tensile and compressive force sensors are provided. The device includes a flexible element ropc, the sensors, and a signal processing device and is provided with a fully-mechanized coal mining working face including a plurality of middle troughs. Each middle trough is connected to a push-pull rod of one hydraulic support and provided with two sensors. One end of the flexible element rope is connected to a rope extend- retract control device, and the other end sequentially passes through lifting rings for connection with the sensors and is fixed to a positioning force bearing bolt on the outermost side. The middle troughs' positions are adjusted according to the signal processing device's result, so that tensile and compressive force values in all groups are equal and zero, thus completing automatic straightening of the scraper conveyor body.

Classes IPC  ?

• B65G 23/44 - Dispositifs de tension des courroies ou des chaînes

Abrégé

The present invention discloses a coupled system and a method for separation and drying of moist fine particle coal. The coupled system comprises a blast blower, a surge tank, a moisture detection sensor, a control device and two pipelines, wherein the blast blower is communicated with the surge tank; one end of two pipelines which are connected in parallel is communicated with the surge tank, while the other end is communicated with a fluidized bed; one of the two pipelines consists of a No. 1 valve, a No. 1 flowmeter, an air heater and an electric butterfly valve which are connected in series sequentially, while the other pipeline consists of a No. 2 valve and a No. 2 flowmeter which are connected in series; the moisture detection sensor is arranged in the fluidized bed; and the control device is respectively connected with the blast blower, the No. 1 valve, the No. 1 flowmeter, the air heater, the No. 2 valve, the No. 2 flowmeter and the moisture detection sensor. The coupled system can sequentially achieve drying and separation of brown coal particles in the fluidized bed, making the upgrading separation of brown coal particles by dehydration and de-ashing done within one process flow, thereby improving the working efficiency and simplifying the process flow.

Classes IPC  ?

• F26B 3/092 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c. à d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p.ex. l'air le gaz ou la vapeur s'écoulant à travers le matériau ou les objets à sécher de façon à les rendre lâches, p.ex. pour former un lit fluidisé en agitant le lit fluidisé, p.ex. par vibration ou par pulsation
• B01J 8/24 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solides; Appareillage pour de tels procédés les particules étant fluidisées selon la technique du "lit fluidisé"
• B03B 1/00 - Traitement pour faciliter la séparation, en altérant les propriétés physiques du matériau à traiter
• B03B 5/64 - Lavage de matériaux en grains, en poudre ou en grumeaux; Séparation par voie humide en utilisant des classificateurs hydrauliques, p.ex. des appareils de concentration à chute en spirale ou en hélice, du type à couloir ou à bassin du genre à sédimentation libre
• B03B 13/00 - Systèmes de commande, spécialement adaptés aux appareils à séparer par voie humide ou à des installations de préparation mécanique, utilisant des effets physiques
• B07B 11/04 - Dispositifs de commande
• C10L 9/00 - Traitement des combustibles solides en vue d'améliorer leur combustion
• C10L 9/08 - Traitement des combustibles solides en vue d'améliorer leur combustion par traitement thermique, p.ex. calcination
• F26B 3/084 - Procédés de séchage d'un matériau solide ou d'objets impliquant l'utilisation de chaleur par convection, c. à d. la chaleur étant transférée d'une source de chaleur au matériau ou aux objets à sécher par un gaz ou par une vapeur, p.ex. l'air le gaz ou la vapeur s'écoulant à travers le matériau ou les objets à sécher de façon à les rendre lâches, p.ex. pour former un lit fluidisé un échange de chaleur intervenant dans le lit fluidisé
• F26B 21/00 - Dispositions pour l'alimentation ou le réglage de l'air ou des gaz pour le séchage d'un matériau solide ou d'objets

Abrégé

The present invention relates to an environment-friendly method for treating contaminated soil. Disclosed is a method using an artificial freezing technique for sealing and displacement of a soil pollutant. The method for displacement of the soil pollutant comprises: performing, based on an area and depth of a surveyed contaminated site, an artificial freezing technique to form a sealed frozen wall along the perimeter of the contaminated site, using the excellent permeation resistance function of the frozen wall to seal the contaminated site and prevent the pollutant from spreading further; then selecting, on the basis of the freezing temperature and precipitation rate of the pollutant, a freezing temperature of -10°C to -30°C, controlling the freezing rate to 1-10 cm/day, and using a principle of freezing purification to achieve freezing displacement of the soil pollutant from the perimeter to the center of the site to concentrate the pollutant; and subjecting the remaining highly concentrated contaminated soil to chemical treatment.

Classes IPC  ?

• B09C 1/00 - Régénération de sols pollués

Abrégé

A detection and drilling apparatus for detecting a lithological composition in a roadway roof during drilling thereof comprises a single head jumbolter for drilling a hole in the roof, a rock debris collector for collecting rock debris during drilling of the roof and an enhanced handheld ore analyzer for analyzing the collected rock debris. The rock debris collector comprises a casing with vent holes, a duct, a collecting funnel, a bottom drain pipe, and a dryer device arranged around a filter tube within the casing. A top opening of the collector funnel is arranged below a borehead drilled by the single- head jumbolter. The collecting funnel is connected to the filter tube via the duct. During drilling the rock debris collector collects rock debris for drying, filtering and draining to provide the collected rock debris to be analyzed by the enhanced handheld analyzer for detecting the lithological composition in the roof.

Classes IPC  ?

• E21B 49/02 - Test pour déterminer la nature des parois des trous de forage; Essais de couches; Procédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits par prélèvements mécaniques d'échantillons du terrain

Abrégé

An overwinding prevention method and apparatus for a deep shaft hoisting system are provided. The method comprises: mounting an overwinding prevention apparatus at each of upper and lower limit positions of a working area of a hoisting container. The apparatus comprises an electromagnetic buffer apparatus and a mechanical buffer apparatus. The electromagnetic buffer apparatus comprises an exciting coil, an external power supply, and a detection and control module comprising a speed detection element, a location detection element, and a controller. The speed detection and the location detection elements are respectively connected to the controller. The mechanical buffer apparatus comprises a hydraulic loop connected to the controller and to a double acting hydraulic cylinder located at one end of the exciting coil distant from the hoisting container.

Classes IPC  ?

• B66B 5/08 - Utilisation de dispositifs de vérification, de rectification, de mauvais fonctionnement ou de sécurité des ascenseurs réagissant à des conditions de fonctionnement anormales pour empêcher un enroulement exagéré

Abrégé

The present invention discloses sound level meter-based tunnel roof rock Protodyakonov coefficient detecting-while-drilling apparatus and a method. Aiming at the detecting-while- drilling problem of the important rock mechanics index--Protodyakonov coefficient affecting the anchoring and supporting scheme of the coal mine tunnel roof, drill holes of .PHI.32-42mm are constructed in the tunnel roof, bearing type while-drilling apparatus with a sound level meter probe is arranged behind a drilling bit. A method of combining with the reading of a scale drill stem is used. In the drilling process, the volume decibel of drill holes with different depths is tested, the Protodyakonov coefficient of the rock within the range of the tunnel roof drill holes is obtained quickly by comparing with the volume decibel of the in-situ rock drilling in the tunnel in conjunction with the standard library of the rock Protodyakonov coefficient of 0.3 to 20 established in the laboratory, and harmful noise in the punching process is converted into useful sound source, thereby achieving the detecting- while-drilling technology. It is suitable for the detecting while drilling of the Protodyakonov coefficient of sandstone, shale, mudstone and other typical deposited rock strata of coal measure strata. It has the advantages of convenient use on site, simple operation, low labor intensity and no influence on normal production.

Classes IPC  ?

• E21D 20/00 - Mise en place des boulons d'ancrage

Abrégé

The present invention discloses a process method for withdrawing and recovering a mechanical constant-resistance single prop, specific steps involving: detecting a working resistance and a degree of deformation of a mechanical constant- resistance single prop, releasing lug clamp bolts (11) of a recoverable base, knocking a lower portion of a cylinder body of the mechanical constant-resistance single prop to disengage the mechanical constant-resistance single prop from the recoverable base (2), and dismantling the mechanical constant-resistance single prop. Parts are classified and recovered based on degree of deformation thereof. By means of the foregoing method, a process of withdrawing and recovering a mechanical constant-resistance single prop is standardized, simple and fast disengagement of the mechanical constant-resistance single prop is achieved, and parts that can still be used can be sufficiently recovered and reused, thereby achieving the objectives of saving energy and reducing costs.

Classes IPC  ?

• E21D 15/60 - Dispositifs pour retirer les étançons ou les cales

Abrégé

The present invention discloses an apparatus for pre-loading a mechanical constant-resistance single prop, including a rhombic stretchable bracket, a screw rod, a first cylindrical sleeve ring, and a second cylindrical sleeve ring. The screw rod is connected to two opposite apex corners of the rhombic stretchable bracket. A tail end of the screw rod is fixedly connected to one apex corner of the rhombic stretchable bracket. An end head of the screw rod passes through another apex corner of the rhombic stretchable bracket. The two remaining opposite apex corners of the rhombic stretchable bracket are respectively fixedly connected to edges of the first cylindrical sleeve ring and the second cylindrical sleeve ring through connecting rods. The screw rod is threadedly connected to the apex corner of the rhombic stretchable bracket through which the screw rod passes.

Classes IPC  ?

• E21D 15/50 - Etançons; Cales - Parties constitutives ou détails des étançons

Abrégé

The present invention discloses a base mechanism of a single prop capable of being unloaded at reduced pressure, including a base bottom plate and two wedge- shaped support blocks, where one of the wedge-shaped support blocks serves as a fixed wedge- shaped support block and is welded onto the base bottom plate, and the other of the wedge- shaped support blocks serves as a movable wedge-shaped support block and is connected to the fixed wedge- shaped support block by using a screw rod and a nut. The present invention can effectively unload the single prop at reduced pressure or remove the single prop in a contracted manner, is of a simple structure, is convenient to operate, has a good use effect, overcomes the technical problem that it is difficult to unload a single prop at reduced pressure in this technical feature, and is widely applicable in this technical field.

Classes IPC  ?

• E21D 15/54 - Etançons; Cales - Parties constitutives ou détails des étançons - Détails des extrémités d'étançons

Abrégé

The present invention provides a reaming and self-rotating anchor rod and a construction method using the reaming and self-rotating anchor rod, which are applicable to supporting for quick tunneling of coal roadways. The reaming and self-rotating anchor rod comprises a rod body, a drill bit, a connecting member, a tray and a nut; one end the connecting member is snap-fixed to the tail part of the rod body, the other end of the connecting member is connected to an anchor rod bolter, the rod body has an annular protrusion at its middle part to block powder so that the powder fills up the clearance between the rod body and the coal mass; the drill bit has female threads and can be screwed into the front part of the rod body, and the drill bit has baffle pawls and spiral grooves on its side surface; a hole in length smaller than the length of the anchor rod is drilled out with an anchor rod bolter first, and then the anchor rod is connected to the anchor rod bolter, the drill bit on the front part of the anchor rod is placed in the preformed hole, and finally the anchor rod is driven to ream and rotate into the coal mass, so as to accomplish the construction with the reaming and self-rotating anchor rod; the reaming and self-rotating anchor rod can shorten supporting time and avoid an abandoned borehole phenomenon incurred by hole collapse or blockage, and anchoring failure, etc., and the anchor rod is simple to manufacture, low in cost, and simple and convenient to operate. Therefore, the anchor rod and the method of using it can be widely applied and can meet the requirement for quick tunneling of coal roadways.

Classes IPC  ?

• E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits
• E21B 10/26 - Trépans avec une partie pilote, c. à d. trépans comportant un organe coupant pilote; Trépans pour élargir le trou de forage, p.ex. alésoirs
• E21D 20/00 - Mise en place des boulons d'ancrage

Abrégé

A self-heat-dissipation pressure-reducing valve applicable to petrochemical and coal-chemical equipment comprises: a heat-dissipation valve core, an upper valve deck, a guiding valve deck, a valve body, a heat-dissipation valve seat, an air guide hood, and a turbine-type heat dissipation device. The heat-dissipation valve core comprises a heat pipe and valve core heat-dissipation fins. The heat- dissipation valve seat comprises a valve seat pocket, a valve seat shell, heat pipes, and valve seat heat-dissipation fins. An outer circumferential surface of the valve seat pocket is wound with multiple heat pipes fixed to the valve seat heat-dissipation fins. The turbine-type heat dissipation device comprises a fan shell provided at a medium inlet, and a turbine lashed by a medium to turn the fan shell. Wind is guided in one direction through an external air guide hood to implement heat dissipation of the valve core and valve seat heat-dissipation fins.

Classes IPC  ?

• F16K 49/00 - Moyens portés par ou sur les soupapes pour chauffer ou refroidir
• F16K 47/00 - Moyens incorporés aux soupapes pour absorber l'énergie d'un fluide

Abrégé

Disclosed is a method for recovering room-mining coal pillars by solid filling in synergy with artificial pillars. Solid materials and cementing materials on the ground are conveyed through a feeding well and a pipeline to a room-and-pillar goaf, a plurality of artificial pillars is cast at an interval in a coal room area, and gangue is cast to fill other regions of the coal room using a gangue casting machine. Under joint support by the artificial pillars and the coal room filler, coal pillars are recovered using a continuous coal mining machine, artificial pillars are cast in the original coal pillar area after recovery, and gangue is cast to fill the original coal pillar area using the gangue casting machine. A system for recovering room-mining coal pillars by solid filling in synergy with artificial pillars comprises a material conveying system, a joint support system, and a coal pillar recovery system.

Classes IPC  ?

• E21C 41/18 - Procédés d'exploitation minière souterraine; Tracés à cet effet pour la lignite ou le charbon
• E21F 15/06 - Remblayage mécanique

Abrégé

A flotation method for a coal comprises: supplying, by means of a pump (E), a solution containing nanobubbles (5) to a mineral slurry mixing tank (F), and simultaneously supplying coal (7) and a flotation reagent (8) to the mineral slurry mixing tank (F); and supplying, by means of a material feeding pump (G), a mineral slurry mixture (9) to a countercurrent static micro-bubble flotation column (H) to undergo floatation, thereby obtaining two resulting products, a fine coal (10) and a tailing (11). The method utilizes a property of nanobubbles that the same preferentially gather at a hydrophobic surface, increasing the difference in hydrophobicity between the fine coal and coal gangue. The gathering of the nanobubbles also significantly reduces a fine mud covering a coal particle surface, thereby greatly reducing contamination caused by the fine mud, and increasing a recycling rate of the fine coal.

Classes IPC  ?

• B03D 1/02 - Procédés de flottation par formation d'écume

Abrégé

Disclosed is a pitshaft coal uncovering method for coal mines whose coal seam lies in a main aquifer. The method, which solves the problem of water inrush, comprises: constructing a vertical shaft from the ground to a weak aquifer in an overlying stratum which lies above the coal seam; relieving pressure and draining water within a range from a construction drainage hole to the coal seam; grouting and blocking the vertical shaft; excavating an inclined shaft, constructing a drainage hole, an advance borehole, and a direct draining borehole, so as to control the water in the high-pressure coal seam and establish a temporary drainage system, through which the coal seam water is drained to the ground; and after the water is drained and pressure is relieved in the water containing coal seam, further excavating the inclined shaft until uncovering a coal safely.

Classes IPC  ?

• E21C 41/16 - Procédés d'exploitation minière souterraine; Tracés à cet effet
• E21C 41/18 - Procédés d'exploitation minière souterraine; Tracés à cet effet pour la lignite ou le charbon
• E21F 16/00 - Drainage

Abrégé

Disclosed is a heat pump-reinforced salinity-gradient power generation device using a vapor-pressure difference energy method under a positive temperature difference. The device comprises a heat pump heating cycling device and a salinity-gradient power generation device using the vapor-pressure difference energy method. The heat pump heating cycling device comprises a condenser, a heat pump, pipe, a throttle valve, an evaporator, and a compressor. The salinity-gradient power generation device comprises a low-pressure container, a high-pressure container, an expander, a differential pressure gauge, and an expander pipe. By the heat pump heating cycle, heat is absorbed from a concentrated solution to lower the solution's temperature, and released to a dilute solution to increase the solution's temperature. The negative temperature difference thus generated is effectively canceled, generating and maintaining a positive temperature difference. Accordingly, a large enough positive saturated vapor pressure difference is generated and maintained, thereby facilitating the expander to do work.

Classes IPC  ?

• F03G 7/00 - Mécanismes produisant une puissance mécanique, non prévus ailleurs ou utilisant une source d'énergie non prévue ailleurs
• F01K 21/00 - Ensembles fonctionnels de machines motrices à vapeur non prévus ailleurs
• F03G 7/04 - Mécanismes produisant une puissance mécanique, non prévus ailleurs ou utilisant une source d'énergie non prévue ailleurs utilisant les différences de pression ou les différences thermiques existant dans la nature
• F25B 30/06 - Pompes à chaleur caractérisées par la source de chaleur à faible potentiel

Abrégé

A mining design method for near-whole rock upper protective layer in coal seam mining is provided. Based on information about engineering geologic conditions of a protective layer mining well and physico-mechanical parameters of a coal-rock mass sample, protective layer mining thickness M and interval H between the protective and the protected layers are determined by numerical analysis such that an expansion deformation rate y of the protected layer, a failure depth K of a floor plastic zone of the protective layer, and a coal seam gas pressure P meet the Provision in Prevention and Control of Coal and Gas Outburst. From a mining thickness percentage accounted by rock in the near-whole rock upper protective layer, a mining process is determined from among a fully-mechanized coal mining process, a fully-mechanized coal mining process assisted by single-row hole pre-splitting blasting, and a fully-mechanized coal mining process assisted by double-row twisted hole blasting.

Classes IPC  ?

• E21B 49/00 - Test pour déterminer la nature des parois des trous de forage; Essais de couches; Procédés ou appareils pour prélever des échantillons du terrain ou de fluides en provenance des puits, spécialement adaptés au forage du sol ou aux puits

Abrégé

Disclosed is a device for the emulsification and controlled addition of a flotation agent, which is applicable to the field of coal dressing. The device comprises a floatation feed flow rate and concentration detection system (13), wherein a flotation machine feed pipeline is connected to a control system (14) through a line, and the control system (14) is connected to an agent metering, emulsification and multi-point addition system and a flotation foam product monitoring system, respectively; the control system (14) comprises a PLC control cabinet (12) and an upper computer (11) connected to each other; the agent metering, emulsification and multi-point addition system comprises an agent box, a metering pump (4), an emulsification pump (3), an agent addition metering pump (5) and an agent buffering tank (8); and the flotation foam product monitoring system is a monitoring camera (17) arranged on a flotation device (16), the monitoring camera (17) being connected to the upper computer (11). The device for the emulsification and controlled addition of a flotation agent realizes automatic addition of the agent, effectively reducing the waste of the agent, and no manual agent addition is required for the flotation machine, the flotation machine is unwatched so the need for manual work is reduced, and the floatation cost is reduced.

Classes IPC  ?

• B03D 1/14 - Machines de flottation

Abrégé

The present invention discloses a modular variable-span variable-amplitude large-size vibrating screen, comprising a screen box, excitation beams arranged on the screen box, excitation motors mounted on the excitation beams, and support frames arranged on the lower part of the screen box, wherein, the screen box comprises two screen box side plates arranged opposite to each other, a screen surface is fixed to the lower ends of the screen box side plates, horizontal clamp slots are formed in the screen box side plates, two excitation beams are arranged between the two screen box side plates, the two ends of each excitation beam are provided with vertical clamp slots, and adjusting bolts are inserted into the horizontal clamp slots and the vertical clamp slots, to fix the excitation beams to the screen box side plates; at least two groups of support frames are arranged at intervals along the longitudinal direction of the screen box, the support frames are provided with support frame height adjusting structures, and a support frame span adjusting mechanism is disposed between the two adjacent groups of support frames. The vibrating screen provided in the present invention employs a modular installation scheme and is easy to remove and service, the inclination angle of the screen surface, the span of the excitation motors, the magnitude of excitation force, and the position of the excitation force in relation to the centroid of the screen box can be conveniently adjusted, and the screening accuracy can be improved.

Classes IPC  ?

• B07B 1/46 - Eléments de structure constitutifs des tamis en général; Nettoyage ou chauffage des tamis

Abrégé

The present invention relates to the technical field of coal liberation and separation. Disclosed is a process for liberating and separating difficult-to-separate high-ash slack middling obtained from a coking process. The technique comprises: crushing a slack middling feed (1) in a crushing apparatus (A); separating the crushed material using a spiral separator (B) which discards part of the material with higher density and feeds a lower density material into a particle mill (C); classifying the ground material with a three-product cyclone classifying screen (D), moving an overflow and an undersized material of the classifying screen (D) to a flotation separation system, and returning an underflow to the spiral separator (B) for another round of separation and liberation. The invention provides higher separation density. Spiral separation and discarding of a tailing prevents a high ash particle from entering the mill, thereby reducing the workload of the mill and preventing contamination of a fine coal caused by pulverization of the high ash particle.

Classes IPC  ?

• B02C 21/00 - Installations de désagrégation avec ou sans séchage des matériaux
• B02C 23/14 - Séparation ou triage de matériaux, associé au broyage ou à la désagrégation au moyen de plusieurs séparateurs
• B03B 9/00 - Disposition générale d'un atelier de séparation, p.ex. schéma opératoire

Abrégé

A wireless positioning system and method for a coal cutter based on a pin-track stress change. A sensor module of the coal cutter (5) is connected to an input end of a wireless communication module via a digital quantity sensing module, and an output end of the wireless communication module is connected to a remote positioning control system. An ultrasonic wave sensor is used for measuring the relative position of a hydraulic support (3), a displacement sensor is used for determining the advancing distance of a scraper chute (1), and a strain sensor is used for acquiring feedback information about the operating attitude of the coal cutter (5). A digital sensing module is used for collecting and processing a sensor module signal. The wireless communication module is used for communicating with the remote positioning control system in a wireless manner so as to realize wireless transmission of data information. The remote positioning control system processes, records and displays a data signal. The method comprises: acquiring spatial distribution information about any scraper chute (1) by means of a plurality of sensor signals, and acquiring the position of the coal cutter (5) in real time based on pin-track stress feedback information. The system and method have the advantages of being reliable, applicable, simple and practicable.

Classes IPC  ?

• G01C 21/00 - Navigation; Instruments de navigation non prévus dans les groupes

Abrégé

A method for estimating the chain tension of a scraper conveyor. The method comprises: embedding strain sensors into scrapers of several scraper conveyors; measuring the tension of a weak coupling point between each scraper and a chain; performing data signal conversion on a collected sensor signal by means of an A/D conversion unit, and transmitting the signal to a data control centre by means of a wireless sending module; the data control centre performing further processing based on tension data information about the weak coupling point; and establishing a chain tension distribution model, thereby realizing chain tension estimation for the scraper conveyor. The method is simple, highly efficient and practicable. Through tension measurement on limited positions of the chain, tension estimation on the whole continuously moving chain is achieved. The chain of the scraper conveyor engages with a chain wheel and continuously moves on a middle groove, and the tension thereof changes in real time along with a load. The strain sensors are arranged on the scrapers for measuring the tension of the weak coupling point between each scraper and the chain. Estimation on the tension of the whole chain is achieved through tension measurement on limited positions of the chain.

Classes IPC  ?

• G01L 5/04 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de la tension dans les éléments flexibles, p.ex. dans les cordages, les câbles, les fils métalliques, les filaments, les courroies ou les bandes

Abrégé

Disclosed are a test system and method for road surface energy harvesting. The system comprises: a base frame, a power unit fixed on the base frame, a wheel simulator, energy harvesting modules, a loading unit. and a data acquisition and analysis unit. The power unit provides wheel-rotating power to the wheel simulator to simulate a working condition of wheel rolling. The energy harvesting modules are connected to the loading unit, which presses the modules against wheels of the simulator to simulate working conditions under different loading forces. The data acquisition and analysis unit acquires and analyzes energy harvesting capacity and efficiency of the modules. The present invention can simulate working conditions of road surface energy harvesting when a vehicle is running on a road surface, and is used to detect the energy harvesting capacity and efficiency of a road surface energy harvesting system as the vehicle's load or speed changes.

Classes IPC  ?

• G01M 17/02 - Pneumatiques

Abrégé

A multi-rope cooperative control system testbed for an ultradeep mine hoist is provided. A hydraulic motor is mounted on a base and connected to a roller by couplings. The roller is provided with a wire rope connected to a cage. A tension sensor on the wire rope detects the rope's tensile forces and feedback a signal. A servo hydraulic cylinder is fixed on a hinge, with the upper end being connected to a headgear sheave bracket fixed on a linear guide rail. The hinges and the linear guide rail are connected to a steel structural bracket. The servo hydraulic cylinder drives the headgear sheave up and down via the headgear sheave bracket. A pressure sensor is placed on the headgear sheave bracket to detect pressure applied thereto. A spiral instrument is fixed above the cage located in the steel bracket to detect whether the cage is horizontal.

Classes IPC  ?

• B66B 1/04 - Systèmes de commande sans régulation, c. à d. sans action rétroactive hydrauliques
• B66B 5/00 - Utilisation de dispositifs de vérification, de rectification, de mauvais fonctionnement ou de sécurité des ascenseurs
• B66B 15/08 - Mécanismes d'entraînement

Abrégé

Disclosed is a method for determining a length of a filling section in a fully mechanized mining-filling mixed mining working face wherein according to the production capacity requirement of the mine, total length of the working face is determined. According to the principle that the daily production amount of gangue in a rock protection layer working face is equal to the mass of filling material filled in a goaf of the filling section, a length range of working face of the filling section is preliminarily determined. The working face length of the filling section is determined according to the overlying rock fractures and strata movement characteristics of the on-site working face. The method promotes a "mining, selecting, filling and mining" integrated environment- friendly mining recycling mode, wherein the underground gangue in the coal mine does not go out of the mine, the gangue is cleaned, selected, and refilled into the goaf.

Classes IPC  ?

• E21F 15/00 - Procédés ou dispositifs pour mettre en place les matériaux de remblayage dans les travaux du fond