1504 results about "Coal mining" patented technology

The invention relates to the technical field of coal mine fully-mechanized coal mining automation control, and discloses a roller cutting track calibration method based on IMU, radar and visual fusion, which comprises the following steps: establishing a static transformation matrix and a vibration mode external parameter compensation library; iMU, radar and visual data are collected in real time; performing external pre-correction based on an IMU vibration characteristic index compensation library; projecting radar and visual data to a fuselage coordinate system to calculate a spatial geometric residual error, and iteratively optimizing an external parameter by taking an IMU real-time attitude as a fixed constraint when the spatial geometric residual error exceeds a threshold value; and based on the geometric consistency confidence coefficient, carrying out adaptive weighted fusion on multi-source data, and reconstructing a coal wall model and a roller cutting track. Through combination of vibration mode feed-forward compensation and geometric consistency closed-loop feedback, dynamic calibration of external parameters of the sensor in a strong vibration environment is realized, the problems of multi-source data space registration deviation and fusion instability are solved, and the accuracy of fully mechanized coal mining face environment perception and cutting track calibration is improved.

The invention discloses a coal mine intelligent coal face control system based on digital twinning. The system comprises an underground entity unit, a ground virtual unit and an interaction unit connecting the underground entity unit and the ground virtual unit. The physical unit acquires data through the sensing network module and uploads the data through the communication module; the virtual unit builds a three-dimensional dynamic model through a twinborn body building module, virtual and real consistency is guaranteed through a model dynamic correction module, then an optimal control strategy is generated through simulation optimization of a twinborn data analysis and decision-making module, and finally an instruction is issued to an execution mechanism module through a control module to form closed-loop control; according to the method, the digital twinborn body completely corresponding to the physical working face is constructed, simulation operation and verification can be carried out on the whole process of the coal mining technology and equipment linkage logic in a virtual space in advance, and therefore potential action interference and logic conflicts are recognized and eliminated before an actual control instruction is issued, the effect of pre-judgment in advance is achieved, and the real-time performance of the coal mining technology is improved. And the look-ahead decision-making capability of the system is greatly improved.

The invention relates to the field of geological exploration, in particular to an intelligent analysis method and system for geological exploration data of a coal mining subsidence area. The invention discloses an intelligent analysis system for geological exploration data of a coal mining subsidence area. The intelligent analysis system comprises a data acquisition module, an underground three-dimensional model construction module, a foundation stability evaluation module, a residual deformation prediction module and a suitability judgment module. According to the method, multi-source data such as drilling data, geophysical prospecting data, remote sensing topographic data, monitoring actual measurement data and geotechnical test data are comprehensively analyzed, a unified underground three-dimensional model is constructed, and the limitation of data isolation of a traditional exploration method is broken through; according to the method, through drilling and geophysical prospecting bidirectional complementary correction and combination of a settlement monitoring sequence and static attributes, a more accurate and comprehensive geological exploration result is provided for a coal mining subsidence area, and the accuracy of foundation stability evaluation and deformation prediction is remarkably improved.

The invention discloses coal mine screening equipment for coal mining and a use method, and the equipment comprises a multi-source sensing module which is used for obtaining the original data of various physical characteristics of raw coal in real time; the data fusion and feature extraction module is used for extracting a fusion feature vector used for representing the key difference between the coal and the gangue; the decision-making unit is used for generating a sorting control instruction aiming at the current batch of raw coal in real time; the execution module is used for carrying out coal and gangue separation on the coal flow; the feedback module is used for feeding back clean coal product quality indexes and tailing data detected in real time to the decision-making unit; multi-dimensional information such as mineral components, moisture and lumpiness is fused through the multi-source sensing module, comprehensive analysis is carried out through the data fusion and intelligent recognition model, the limitation of a single sensing mode can be overcome, the recognition precision and reliability of coal and gangue are improved, efficient sorting is achieved from the source, and the recognition efficiency of coal and gangue is improved. The effects of improving the purity of a clean coal product and reducing the coal carrying rate of the gangue are directly achieved.

The invention relates to the technical field of fully mechanized coal mining face automation control, and discloses a working face end straightness detection method and device based on a laser radar, and the method comprises the steps: building geometric and radiation references through collecting fixed reference target data; in real-time detection, a displacement vector and an atmospheric attenuation coefficient are calculated by using an instantaneous state of a target, and double-domain dynamic correction of coordinate rigid inverse transformation and intensity threshold adaptive adjustment is performed on an original point cloud. Then, clustering segmentation and slice centroid extraction are carried out on the corrected point cloud, and an ordered feature point set is obtained; and performing multi-factor weighted curve fitting on the feature point set in combination with geometric stability and environmental credibility, constructing a form fitting curve, and outputting a straightness deviation quantitative index according to a comparison result of the curve and an ideal reference straight line. According to the invention, the interference of equipment vibration and dust attenuation on measurement is eliminated, and the robustness and precision of the straightness detection of the scraper conveyor are improved.

The invention discloses a reinforced photoelectric composite cable of a coal mining machine, which belongs to the technical field of cables, and comprises a composite cable core structure, an armored protective layer and a sheath system, and the armored protective layer comprises a first steel belt, a second steel belt and a metal net braid layer, a third steel belt which is continuously bent to be of a wave structure is arranged in a cavity formed by the first steel belt and the second steel belt, the wave troughs of the third steel belt make contact with the inner wall of the first steel belt, and the wave crests of the third steel belt make contact with the inner wall of the second steel belt. The cable can be subjected to multi-dimensional mechanical property collaborative optimization under complex working conditions, the purpose of graded unloading is achieved through deformation of the steel plate, the situation that a traditional structure generally depends on rigid resistance of an armor layer is not needed, the flexibility is considered while the mechanical property is guaranteed, and the cable adapts to frequent bending scenes; and the long-term stable operation of the cable in a severe mine environment is further ensured.

The application discloses a coal rock anti-burst method of large-range seam forming by remote controllable shock wave and hydraulic fracturing, and comprises the following steps: step one, detecting and recording the stress concentration degree of target coal seam or rock stratum; step two, drilling; step three, withdrawing the hollow drill rod, arranging the discharge electrode connected with the cable at the front end of the hollow drill rod, and sending the discharge electrode into the drill hole through the hollow drill rod; step four, sealing the hole by using a hole sealer and performing hydraulic fracturing; steps five to seven, completing multiple repeated electric pulse discharge operations; and step eight, testing the pressure relief effect of the coal seam or rock stratum. The method uses the drilling cuttings method, high-pressure hydraulic fracturing and high-voltage electric pulse to perform large-range cracking and pressure relief on the coal rock stratum, changes the stress state of the coal rock stratum, and reduces the stress concentration degree, so that the anti-burst purpose is achieved. The method is mainly applied to deep coal rock body tunneling roadways and coal mining working faces containing coal rock body impact tendency.

The invention discloses a coal cutter cutting interference prevention method and system based on point cloud and infrared images. The method comprises the steps that a radar sensing module and an infrared sensing module are installed; synchronously acquiring three-dimensional point cloud data and infrared image data of the target monitoring area; the three-dimensional point cloud data and the infrared image data are preprocessed, aligned in the time dimension and registered in a space coordinate system; performing feature extraction on the three-dimensional point cloud data and the infrared image data, performing feature fusion, and extracting space attitude parameters of the face guard; carrying out risk grade discrimination, and marking an interference position; and generating a risk avoiding control instruction according to the risk level, and executing a risk avoiding adjustment action. According to the system, a processing module comprises a data preprocessing module, a multi-modal information fusion module, an identification module and a decision control module, and the processing module is connected with a radar sensing module and an infrared sensing module. According to the invention, accurate monitoring and active prevention of the cutting interference state of the side protection plate and the coal mining machine roller can be realized.

The invention provides a coal mining subsidence land mining while treatment method and system based on multi-source monitoring and dynamic prediction, and belongs to the technical field of coal mining governance, the coal mining subsidence land mining while treatment system based on multi-source monitoring and dynamic prediction comprises a sensing layer, a data layer, an intelligent layer and an application layer; wherein the sensing layer comprises a'satellite-air-ground-well 'integrated monitoring network; wherein the data layer comprises a fusion and processing network; wherein the intelligent layer comprises an analysis and prediction network; wherein the application layer comprises an execution and feedback network. Through multi-source data fusion and a dynamic prediction model, treatment opportunity selection is changed from experience judgment to data-driven scientific decision, and the problem of intervention opportunity is solved; according to the dynamic backfill volume calculation model, filling according to needs and accurate regulation and control are achieved, it is predicted that earthwork waste caused by excessive design or secondary treatment can be reduced, and the engineering cost is remarkably reduced.

The invention relates to the technical field of coal mining and rock mechanics numerical simulation, and discloses a stress field reconstruction method of a plane strain numerical simulation model for coal mining, and the method comprises the following steps: firstly, obtaining an actually measured vertical stress increment and an actually measured bearing pressure peak value position of a stope face; then, an initial plane strain numerical simulation model is constructed, the space error between the peak position of the simulated bearing pressure and the actual measurement position meets a preset threshold value by adjusting the excavation step pitch, and therefore the numerical simulation calculation state is locked to eliminate space-time dislocation; a simulation strain increment is extracted in a locked state, a theoretical vertical stress difference equation is constructed based on an elastic mechanics plane strain constitutive relation, and a parameter inversion equation set is established in combination with multi-measurement-point data; and solving the corrected elastic modulus and Poisson's ratio by using a least square optimization algorithm. According to the method, through physical state locking and incremental theory inversion, system errors are effectively eliminated, and the reconstruction precision and mechanical preciseness of the mining-induced stress field are improved.

The invention relates to the technical field of intelligent mines, in particular to a question answering method and system based on a coal mining subsidence knowledge graph, and the method comprises the steps: collecting coal mining subsidence knowledge multi-source data, and designing a domain ontology and a mode layer; entities and relationships are extracted from the coal mining subsidence knowledge multi-source data, a coal mining subsidence alias entity library is constructed, and a coal mining subsidence knowledge graph is generated; and receiving a user question, extracting a subject entity in the user question, identifying a user intention, retrieving an answer meeting a preset matching condition from the coal mining subsidence knowledge graph, and generating an answer of the user question. Therefore, the problem that required comprehensive knowledge is difficult to quickly and accurately obtain due to the fact that multi-source heterogeneous data cannot be effectively integrated, semantic understanding ability is lacked and generated question and answer information has an imaginary phenomenon in the prior art is solved; and the efficiency and progress of the smart mine in the aspects of disaster analysis, decision support, emergency response and the like are greatly limited.

The invention relates to the technical field of coal mining, in particular to a coal mining prediction method and a coal mining prediction device. The method comprises the steps of obtaining geological basic data, and obtaining a regional geological database based on the geological basic data; based on the regional geological database, carrying out three-dimensional geological modeling by adopting a multi-field coupling modeling method; performing dynamic iteration correction on the three-dimensional geologic model based on the data consistency constraint of the virtual sensor node; production working condition parameters of the working face in the mining process are obtained in real time, the production working condition parameters are converted into constraint conditions of the three-dimensional geologic model, and dynamic modeling in the mining process of the working face is carried out; based on the production working condition parameters and the three-dimensional geologic model, intelligent analysis and multi-field coupling simulation are carried out, and a mining prediction result is obtained; updating the mining decision in real time based on the mining prediction result; the device is applied to the method, and accurate prediction, dynamic optimization and safety guarantee of the mining process are achieved.

The invention discloses an in-situ water-preserved mining method for a high-salt high-pressure-bearing bottom plate aquifer, and relates to the technical field of coal mining. The method comprises the steps that the damage depth of a bottom plate, the height of a confined water guide rising zone and the thickness of a minimum safe water-resisting layer are calculated according to geological and mining technical parameters; adjusting according to a preset water-preserved mining condition to enable the working face to meet the water-preserved mining condition; calculating to obtain the grouting thickness of the corrosion-resistant material; corrosion-resistant acrylate grouting liquid is injected from the upper edge of the confined water guide rising zone according to the grouting thickness of the corrosion-resistant material; monitoring the water pressure of a bottom plate aquifer and the height of a confined water guiding and rising zone, and when a preset risk condition is exceeded, determining that the working face has a water-preserved mining failure risk, and performing risk early warning; and when risk early warning occurs, secondary grouting is carried out according to the grouting thickness of the corrosion-resistant material. A chemical corrosion resistant acrylate grouting liquid is injected into the upper edge of a confined water guiding and rising zone, and gradual corrosion damage and bottom plate water inrush of a rock stratum under the action of high-salinity and high-confined water are prevented.

The invention relates to the technical field of water-preserved mining of coal mines, in particular to a mining aquifer restoration method for artificially inducing chemical scaling of water flowing fractures. The chemical precipitation induction solution and the mixed slurry are respectively recharged into a water-containing layer and a water flowing fracture which are damaged by coal mining through the filling drill holes, and the diffusion effect of a separation layer at the top interface of a key layer at the top interface of a water flowing fracture zone on the chemical precipitation induction reagent is fully utilized; according to the grouting material, iron and / or calcium are added into the grouting material, so that the iron and / or calcium are effectively converged and fully precipitated with mixed slurry injected into the water-guiding fracture, and generated iron and / or calcium chemical precipitates can consolidate the grouting material particles together through adsorption and wrapping effects, thereby promoting formation of chemical scales in the water-guiding fracture, effectively blocking a leakage channel of a mining aquifer, and improving the water-guiding effect of the mining aquifer. Ecological function restoration and in-situ protection of the mining aquifer of the coal mine area are achieved, and technical guarantee can be provided for water resource protection and ecological restoration of mining area coal mining; the method is low in work amount, high in practicability, capable of effectively reducing the leakage degree of the aquifer and low in cost.

The invention belongs to the technical field of coal mining, and particularly relates to a key parameter design method for targeted grouting and filling pier stud water-preserved coal mining. The method comprises the steps that mine hydrogeology and mining geology data are collected, and the burial depth, the thickness, the physical and mechanical parameters and the gangue breaking and expanding coefficient of a coal rock layer are obtained; adopting discrete element numerical simulation to determine the caving zone height under the insufficient mining critical propulsion length; the drilling depth of the grouting drill hole and the caving zone void ratio are calculated; preparing and testing the mechanical strength and diffusion stacking angle of the grouting material in a laboratory; combining the critical coefficient of insufficient mining, applying a rock stratum subsidence probability integral method, and scientifically designing the interval, the radius and the grouting amount of filling pier columns; and finally, cement pier columns are formed in a caving zone through ground drilling and grouting, an overlying rock stratum is stably supported, and structural deformation of the aquifer is controlled. The method is simple in parameter design and high in accuracy, and space-time interference of a traditional filling process is avoided.

The present invention discloses an InSAR-based measurement method and system for angle of critical deformation in a coal mining area, and relates to the technical field of geological disaster prevention and control of mountainous coal mines, comprising: acquiring a mining surface deformation field image using a small baseline subset interferometric synthetic aperture radar; and drawing profile lines along the strike direction and dip direction of the coal seam respectively in the mining surface deformation field image. The method provided by the present invention has the advantages of improving time resolution and reducing phase noise.

The invention discloses a coal mine gangue solid filling deformation bearing regulation and control method. The method comprises the following steps that deformation bearing indexes of a filling body are determined according to different filling control targets; the method comprises the following steps: acquiring a field gangue filling material, and acquiring physical and mechanical characteristics of gangue and an influence rule of different particle size gradation, lithology and compactness on deformation characteristics of a gangue filling body through an experimental means; selecting one kind of lithologic gangue, and determining discrete element simulation microcosmic parameters by adopting a trial-and-error method; the size of a large-scale numerical model and the gangue particle size range are determined by considering the actual working face size, the gangue lateral confinement compression stress deformation characteristics under the engineering scale are simulated, and the stress-strain relation is fitted according to the stress deformation characteristics. According to the on-site gangue compaction degree and the characteristics of the memory effect of gangue, the fitting curve is translated leftwards to obtain a gangue stress-strain fitting curve under the tamping effect of the filling support, numerical simulation under the engineering condition is conducted through a translated fitting formula, and gangue filling parameters are regulated and controlled according to the simulation result. Experiments, scale effect correction and numerical simulation are organically combined, test operation is easy and convenient, the bearing performance of the filling body is accurately regulated and controlled, the method is suitable for various complex mining scenes, regulation and control efficiency is high, adaptability is high, and reliable technical support is provided for green filling coal mining.

This invention relates to a coal cleaning device for the final stage of fully mechanized coal mining faces. The device includes a frame, guide shoes, and support shoes. The support shoes support the upper surface of the shovel plate of a scraper conveyor. The guide shoes slide and guide the scraper conveyor. The device moves relative to the scraper conveyor when pushed or pulled by the coal mining machine. One end of a telescopic frame extends into the frame and slides in a forward-backward direction. The shoveling mechanism is located on the telescopic frame and includes a plow-shaped shovel head and a connecting plate. One end of the connecting plate is hinged to the telescopic frame, and the other end is connected to the plow-shaped shovel head. A telescopic cylinder drives the telescopic frame and the shoveling mechanism to move forward and backward. A lifting cylinder drives the plow-shaped shovel head to lift or lower. The plow-shaped shovel head flips up the accumulated coal and throws it into the scraper conveyor chute. This invention can quickly, safely, and efficiently complete the final stage of coal cleaning in fully mechanized mining faces using mechanical means.

The utility model discloses a hydraulic support roof-contacting device, belongs to the technical field of coal mining equipment, and solves the problem that support top beams of hydraulic supports are not compactly contacted with the roof due to unevenness of roadway roofs. Comprising a closed high-pressure liquid tank, the lower portion of the high-pressure liquid tank is detachably connected with a support top beam of a hydraulic support, a plurality of floating type roof-contacting mechanisms are arranged on the upper portion of the high-pressure liquid tank, driving parts of the floating type roof-contacting mechanisms are located in the high-pressure liquid tank, and roof-contacting parts of the floating type roof-contacting mechanisms are located above the top of the high-pressure liquid tank. And a high-pressure liquid medium with a constant volume is arranged in a liquid cavity of the high-pressure liquid tank. The hydraulic support is reasonable in design, compact in structure and capable of automatically adjusting the telescopic length of a plurality of floating type roof contact mechanisms according to the actual shape of the roadway roof so as to be tightly attached to the uneven and undulating roadway roof, and the supporting effect and the use safety of the hydraulic support are effectively improved.

The invention relates to the technical field of image segmentation, in particular to a coal mine area ground fracture identification method and device. The method comprises the following steps: acquiring a visible light remote sensing image and a thermal infrared remote sensing image of a target coal mine area; constructing a ground fracture data set based on the visible light remote sensing image and the thermal infrared remote sensing image; a ground fracture recognition model is constructed based on the neural network, the ground fracture recognition model comprises a double-branch encoder, a feature extraction module and a decoder, and the double-branch encoder comprises a feature fusion module; iteratively training the ground fracture recognition model according to the ground fracture data set; and performing ground fracture identification on the visible light remote sensing image to be detected and the thermal infrared remote sensing image to be detected of the target coal mine area by using the trained ground fracture identification model to obtain a ground fracture identification result map. According to the method and the device, the visible light and thermal infrared bimodal data are fused, so that accurate identification of the ground fissures is realized in a complex scene of a coal mine area.

The invention relates to the technical field of coal mine hydrogeology and environmental engineering, and discloses a coal mine groundwater flow-water quality coupling simulation method under mining disturbance condition, which comprises the following steps: step 1, mining disturbance area hydrogeology basic data acquisition: field investigation, drilling sampling, field test and long-term monitoring are carried out to obtain mining disturbance area hydrogeology basic data; the method comprises the following steps: acquiring landform, stratum lithology, geological structure, initial hydraulic gradient, porosity, initial permeability, initial pollutant concentration and hydrogeochemical parameters of a research area, and collecting a coal mining scheme, rock stratum movement observation data and fracture development characteristic parameters; according to the method, the dynamic hydrogeological parameter model is constructed, the water flow-water quality coupling control equation is established, numerical solution and accurate calibration are combined, and accurate simulation of the underground water flow field and the water quality migration process under the mining disturbance condition can be achieved.

The utility model relates to the technical field of coal mining machine matching, in particular to a cable supporting device for a coal mining machine, which comprises a cable supporting mechanism comprising a supporting seat, and a plurality of first square grooves are formed in the outer wall of the lower portion of the supporting seat at equal intervals. According to the utility model, the sliding of the frame is controlled by twisting the bolt I, the limiting and the limiting release of the square rod I are realized, the ring stand can be automatically gathered towards the middle by utilizing the springback of the spring, and the rubber roller I is effectively clung to cables with different diameters, so that the problem that a plurality of cables with different diameters cannot be effectively fixed by the existing V-shaped roller is solved; the cable is prevented from sliding or shifting, the stability of the cable in the running process is guaranteed, in addition, the friction pad and the friction block are matched with each other, after the cable is limited, the ring frame is stably limited through contact of the friction pad and the friction block, it is guaranteed that the cable is always kept at the set position, and the cable fixing effect is further enhanced; and the cable limiting reliability of the cable supporting device under complex working conditions is improved.

The invention discloses a mine coal face low-quality image super-resolution reconstruction method and system. The method comprises the steps of extracting shallow layer features of an input image through a convolutional layer; cascading a plurality of multi-level information extraction modules to serve as a deep feature extraction layer; a plurality of large kernel convolves are spliced as a feature fusion layer; and performing image reconstruction through an image reconstruction layer. The system comprises a shallow feature information extraction module, a plurality of multi-level information extraction modules, a feature information aggregation module and a reconstruction module. According to the method, on the premise of ensuring the light weight of the image reconstruction network, the structure of extracting the feature information by the residual network is optimized, the image texture is effectively repaired, the image details are recovered, and the image reconstruction is realized.

The utility model relates to the technical field of coal mine underground fully mechanized coal mining face conveyors, in particular to a three-chain scraper chain for a conveyor. The utility model patent with the application number of CN202310145841.0 discloses a three-chain transmission system based on the ultra-large transportation volume, and the problems that a three-chain scraper chain is poor in stress uniformity of three chains, poor in S-bend adapting operation and the like exist in the three-chain scraper chain. The three-chain scraper chain for the conveyor is composed of the scrapers, the U-shaped bolts, the nuts, the left chain, the middle chain and the right chain, one scraper is fixed to the left chain and the middle chain through the U-shaped bolts, and the other scraper is fixed to the middle chain and the right chain through the U-shaped bolts at the interval of n rings, that is, each scraper is fixed to the two chains. And different scrapers are crossly arranged left and right. By means of the arrangement mode, the stress uniformity of the three chains is greatly improved, meanwhile, the adaptability of S-bend operation of the conveyor is improved, and high application and popularization value is achieved.

The present disclosure relates to a data verification correction method and device, medium, electronic equipment and program product, and relates to the field of data processing. The method comprises: obtaining actual energy consumption data in the process of coal mining; inputting target coal production into a data relationship model to output reference energy consumption data corresponding to the target coal production through the data relationship model; the data relationship model is a data relationship model of coal production and energy consumption data; determining whether the actual energy consumption data is an outlier according to the deviation value of the actual energy consumption data and the reference energy consumption data; in the case that the actual energy consumption data is not an outlier, determining that the actual energy consumption data is valid data; in the case that the actual energy consumption data is an outlier, replacing the actual energy consumption data with the reference energy consumption data. Through verification and correction of energy consumption data in the process of coal mining, accurate data basis can be provided for carbon emission accounting, and the accuracy of carbon emission accounting can be improved.

A fully-mechanized coal mining hydraulic support transfer device comprises a supporting seat used for bearing a disassembled fully-mechanized coal mining hydraulic support, two opposite indicating grooves are formed in the supporting seat, the placing position can be determined based on the indicating grooves when the disassembled fully-mechanized coal mining hydraulic support is placed on the supporting seat, and a plurality of wheels and a plurality of supporting plates are arranged at the bottom of the supporting seat. The supporting base is provided with two opposite vertical plates in the advancing direction of the supporting base, the supporting plate and the vertical plates extend towards the lower side of the supporting base, and gaps exist between the supporting plate and the ground and between the vertical plates and the ground. The placing position of the disassembled fully-mechanized mining hydraulic support can be determined according to indication of the indication groove, it is guaranteed that the gravity center of the disassembled fully-mechanized mining hydraulic support is located at a proper position, and the stability of the transfer device is enhanced.

The application discloses an automatic control method for fire prevention and extinguishment in a mine, which comprises the following steps: establishing an automatic control system for fire prevention and extinguishment, wherein the automatic control system for fire prevention and extinguishment comprises a nitrogen injection and grouting system, a control center and temperature sensors, oxygen concentration sensors and CO concentration sensors which are arranged in a continuous moving mode and follow a coal mining face, the temperature sensors, the oxygen concentration sensors and the CO concentration sensors are connected to the control center through a CAN data bus, the control center is connected to a nitrogen injection machine and a grouting machine of the nitrogen injection and grouting system through a PLC controller via the CAN data bus, the automatic control method for fire prevention and extinguishment is provided for unmanned operation mining of coal, and the method has the advantages of high practicability, convenient operation and safety. In the case of a spontaneous combustion sign, the method can remotely and quickly give a warning and take action to prevent a fire, the reaction time of the method is short, and the method can be completed in 5 minutes, all operations can be remotely performed, and the safety of personnel is ensured.

The utility model relates to the technical field of coal mining equipment, and discloses a mining horizontal loading coal bunker conveying belt driving device which comprises a support and a conveying belt arranged on the support, a bottom plate is arranged on one side of the support, a clamping oil cylinder and a pushing oil cylinder are arranged above the bottom plate, the clamping oil cylinder is used for clamping the conveying belt, and the pushing oil cylinder is used for pushing the conveying belt to move. The belt clamping oil cylinder is started to drive the lower belt clamping cross beam to move upwards so as to be close to the upper belt clamping cross beam, so that the lower belt face of the conveying belt can be clamped through the upper belt clamping cross beam and the lower belt clamping cross beam, then the pushing oil cylinder drives the upper belt clamping cross beam and the lower belt clamping cross beam to move rightwards, and the upper belt face of the conveying belt can be driven to move leftwards. Therefore, a power source of the whole driving mode is provided by the hydraulic pump station, the power of a driving motor of the pump station is greatly reduced compared with that of a driving motor of a conventional coal bunker, and great assistance is provided for reducing the operation cost of an enterprise.

The application discloses a kind of mining space partition filling collaborative control strata movement methods, comprising: setting paste filling area and grouting filling area, coal cutting operation is carried out by coal mining machine, and is supported in mining space using hydraulic support, paste slurry filling is carried out behind the hydraulic support in paste filling area, and paste filling body is formed after paste slurry solidification;After several rounds of coal cutting and paste slurry filling, coal cutting operation is carried out by coal mining machine, and paste slurry filling is carried out in paste filling area and grouting filling area close to the position of coal cutting operation, to form retaining wall, and grouting slurry is filled between retaining wall and formed paste filling body to form grouting filling body;The forming process of paste filling body and grouting filling body is repeated until the whole mining space stoping operation is completed, to realize mining space partition filling collaborative control strata movement.

The invention relates to a fully-mechanized caving support multiple-butt-joint process and a mining face arrangement method, and belongs to the technical field of coal mine fully-mechanized caving mining face arrangement and support installation. According to the technical scheme, mining face arrangement is optimized according to the revealed coal seam occurrence condition in the tunneling process, and the coal mining amount is delineated to the maximum degree; multiple cutting holes are arranged, and the equipment installation route is optimized; and the positions and states of the recovery bracket and the equipment are accurately controlled, and safe and rapid butt joint of the multi-open-off cut bracket and the equipment is realized. The method has the beneficial effects that the delineated coal mining amount is maximized, the number of equipment transportation links is small, and repeated butt joint is safe, rapid and accurate.