161 results about "Coal field" patented technology

The invention relates to the technical field of coal mine exploration, in particular to a coal field geological anomalous body accurate positioning and intelligent prediction method based on machine learning, which comprises the steps of S1, integrating multi-source geological data; s2, data processing and feature enhancement; s3, machine learning modeling; s4, target spot optimization and dynamic verification; and S5, geological modeling and risk grading. According to the coal field geological anomalous body accurate positioning and intelligent prediction method based on machine learning, a depth domain joint data set is constructed, multi-dimensional features such as seismic amplitude, lithology coding, fracture index and fault distance field are integrated, and multi-source data fusion and physical constraint machine learning are realized through a feature enhancement technology; locking a high-uncertainty region based on the prediction variance, and dynamically updating a target spot through a Gaussian process proxy model to realize targeted drilling and dynamic closed-loop optimization; a multi-attribute risk fusion model is constructed, a four-level risk map is output through the risk factors, grouting resources are guided to be preferentially put into a high-risk area, and risk grading early warning processing is achieved.

The invention belongs to the technical field of coal field fire evolutionary analysis, and particularly provides a visual coal field fire evolutionary process analog simulation test device and method. The test device comprises a test bench, a physical similarity model, a fiber bragg grating temperature and stress integrated monitoring system, a multi-gas monitoring system, an image and video monitoring system and a computer analysis system. A plurality of opening frames are sequentially fixed to form test box bodies, the physical similarity model is arranged in the test box bodies, the inclination angle of the test box bodies is adjusted through an inclination angle adjusting mechanism, and the gas supply system and the ignition system are connected between the test box bodies. The fiber bragg grating temperature and stress integrated monitoring system, the multi-gas monitoring system and the image and video monitoring system are respectively in signal connection with the computer analysis system. According to the invention, visualization of coal field fire evolution processes under different conditions can be realized, and real-time monitoring of change rules of a temperature field, a seepage field and a fracture field in the coal field fire evolution processes under different conditions can be realized.

The invention relates to a coal field fire high-temperature area identification and judgment method. The coal field fire high-temperature area identification and judgment method comprises the following steps: S10, delimiting a target area of a coal field, and respectively acquiring various data in the target area; s20, establishing a time rule model of temperature change through thermal-time sequence coupling; s30, establishing an incidence relation between temperature and radiation characteristics through thermal-spectral coupling; s40, establishing a chemical reaction association relationship between temperature and gas release through heat-gas coupling; and S50, constructing a three-dimensional feature space through the integration of S20, S30 and S40, classifying the three-dimensional feature space through machine learning, and outputting the probability corresponding to the high-temperature type. The coal field fire high-temperature area identification and judgment method has the advantages that high-precision and strong-anti-interference high-temperature area identification is achieved, and reliable technical support is provided for coal field fire monitoring.

The embodiment of the invention provides a coal field fire area gas and particulate matter monitoring method, device and equipment and a storage medium, and the method comprises the steps: carrying out the temperature inversion of thermal infrared remote sensing image data based on a preset temperature inversion algorithm, and obtaining a temperature abnormal region; based on a pre-constructed hyperspectral detection model, performing inversion on the soil moisture data, the chlorophyll content data and the vegetation coverage data to obtain a surface vegetation growth condition; based on the temperature abnormal area and the earth surface vegetation generation condition, a preset judgment model is adopted for judgment, and the fire combustion stage is determined; based on the acquired atmospheric monitoring data, determining a two-dimensional distribution condition of gas and particulate matters in each fire combustion stage; and based on the two-dimensional distribution condition, performing overlay analysis on the atmospheric monitoring data at different heights in the temperature abnormal region to obtain the three-dimensional distribution condition of the gas and the particulate matters. Therefore, the accurate judgment of the combustion condition of the fire area is improved, and the accuracy and reliability of gas and particulate matter monitoring are improved.

The invention discloses a coal field exploration transportation device. The coal field exploration transportation device comprises a back plate and lockable moving wheels. According to the device, an electric hydraulic rod and pressure sensors are adopted, when products obtained through coal field exploration are conveyed, the obtained objects can be directly placed in the transport box, the pressure sensors abut against the two sides of the bottom of the transport box, and at the moment, the transport box can apply pressure to the pressure sensors; after the articles are placed in the transport box, the pressures detected by the pressure sensors at different positions are different, and at the moment, the relative expansion and contraction amount of the multiple sets of electric hydraulic rods around the transport box can be adjusted according to the difference, so that the transport box correspondingly rotates and inclines on the surface of the back plate; the gravity center of the transportation box returns to the middle position again, comfort reduction caused by excessive pressure on the single side of the shoulder of a person and falling of the person during transportation caused by excessive weight on the single side are avoided, the transportation safety is guaranteed, and the transportation box has the advantage that the gravity center of the back load is adjusted.

The invention provides a fine detection method and device suitable for a coal field fire area, and the method comprises the following steps: retrieving related data, carrying out the ground surface geological survey, and obtaining the geological features of a mining area; exploring the earth surface part of the target area, wherein the exploration method comprises an unmanned aerial vehicle infrared temperature measurement method, an unmanned aerial vehicle aerial surveying and mapping method, a field investigation method and a temperature measurement verification method; the natural potential and magnetic distribution condition of a fire area is detected through combination of potential method detection and magnetic method detection, and the coal seam combustion depth and range are deduced; through cooperation of drilling verification and in-hole temperature measurement, data of the vertical combustion state, temperature distribution and geologic structure of the coal field fire area are obtained; and fusing and identifying the acquired information. According to the method and device provided by the invention, the manual investigation risk is reduced, and the working efficiency is improved; through multi-means data fusion and inversion, the fire area positioning precision is improved to a meter level, and the precision of an output result is improved. The air-ground-hole integrated fine detection of the coal field fire area is realized.

The utility model relates to the technical field of hydrogeological exploration, in particular to a coal field hydrogeological exploration layering water stopping device which comprises a fixing box, a pipeline is fixedly installed on the top of the fixing box, and the bottom end of the pipeline penetrates through the top of the fixing box and extends to the position below the bottom of the fixing box. According to the layered water stopping device for coal field hydrogeological exploration, through cooperative use of the fixing box, the pipeline, the first water stopping plate, the second water stopping plate, an annular sealing rubber belt, an adjusting lead screw, a limiting rod, an annular extrusion plate, a motor, a worm and a worm gear, the annular extrusion plate is controlled to move downwards to extrude the annular sealing rubber belt; the water stop plates are deformed to fill gaps around the first water stop plate and the second water stop plate, so that water leakage is effectively prevented, and the water stop effect of each layer is ensured. By extruding the annular sealing rubber belt, the device can achieve an effective sealing effect, and the annular sealing rubber belt is relatively low in manufacturing cost and is more economical and practical.

The invention relates to the technical field of geological exploration, and discloses a thick loess highland coal field three-dimensional seismic exploration method, which comprises the following steps: S101, acquiring an artificial seismic source shot seismic record and superficial Rayleigh wave detector data; s102, performing grid division on the target area, and setting parameters to be inverted; s103, performing vertical ray path time estimation, multi-layer medium dispersion forward modeling and post-stack energy estimation; s104, generating a multi-target error function according to the head wave arrival time observation value, the Rayleigh wave observation dispersion curve, the theoretical ray path time, the phase velocity and the post-stack energy; s105, dividing the target region into three sub-regions, and performing differential evolution iteration until local convergence; s106, establishing a plurality of parallel annealing chains, setting chain temperatures, progressively decreasing the chain temperatures, optimizing to-be-inverted parameters, and outputting optimal to-be-inverted parameters; and S107, calculating the static correction time difference and the absorption compensation coefficient of each acquisition point. The coal seam structure imaging precision and the exploration data reliability under the complex earth surface condition are improved.

The utility model provides a coal field drilling water level monitoring device which comprises a main body, a support arranged in the main body, a winch arranged on the support, an anti-shaking assembly arranged at the bottom of the support and a photovoltaic assembly arranged outside the main body, and a plurality of wheels and supporting legs are arranged at the bottom of the main body; the winch is connected with the water level gauge and used for putting the water level gauge into or pulling the water level gauge out of a drill hole. The anti-shaking assembly comprises an outer cylinder fixedly arranged at the bottom of the main body and an inner cylinder slidably inserted into the outer cylinder, and the inner cylinder is provided with a through hole matched with the water level gauge in size; openings are formed in the bottom end of the body and the upper end of the support and used for allowing the water level gauge to penetrate through. According to the embodiment, the device is moved and fixed through the wheels and the supporting legs. By arranging the anti-shaking assembly, shaking of the water level gauge is limited, and the water level gauge is prevented from being damaged due to collision.

The invention provides a coal field fire area detection method based on a charging method, and relates to the technical field of geophysical exploration. The method specifically comprises the following steps: selecting a target coal field fire area containing at least one known fire source, setting a first-stage observation unit in the target coal field fire area by utilizing the definition of observation units, and measuring the potential of each measuring point in the first-stage observation unit by using a distributed resistivity method measuring instrument, determining the spreading direction of the hidden fire area in the first-stage observation unit, then arranging the next-stage observation unit, determining the spreading direction of the hidden fire area in the next-stage observation unit by measuring the potential of each measuring point in the next-stage observation unit, and continuing to arrange a plurality of stages of observation units; and determining the range of the hidden fire area in the target coal field fire area until the spreading trend of the hidden fire area does not exist in the current observation unit. According to the invention, the problem of space distribution for tracing the development and spreading of the hidden fire area in an extreme application environment is solved.

The invention provides a preparation and application method of a coal field fire extinguishing material and a tracer agent based on coal-based solid waste, and the preparation method comprises the following steps: obtaining the coal-based solid waste as a raw material, and processing the coal-based solid waste to prepare the fire extinguishing material and the tracer agent; high-pressure air is adopted as a carrier medium, and the fire extinguishing material and the tracer agent are injected into a coal field fire extinguishing combination hole through pressure equipment; physical covering and chemical inhibition are achieved through the fire extinguishing material so as to reduce the oxygen content of a fire area and inhibit the fire behavior. Visual dynamic tracking is achieved through the tracer agent so as to monitor fire distribution and the fire extinguishing effect.

The invention relates to the technical field of oil field logging, in particular to a lithology identification method, device and equipment for coal field logging and a medium, and the method comprises the steps: obtaining exploring tube collection data, storing the data in a file, and establishing logging original data; forming a resistivity curve and a natural gamma curve based on the logging original data; layering the non-coal rock layer according to the change condition of the resistivity curve and the change condition of the natural gamma curve, and determining the resistivity statistical value and the natural gamma statistical value of each layer; performing normalization processing on the resistivity statistical value and the natural gamma statistical value of each layer to obtain a resistivity normalization result and a natural gamma normalization result of each layer; calculating a lithologic index result of each layer based on the resistivity normalization result and the natural gamma normalization result of each layer; and based on the lithological index result of each layer, determining the lithological interpretation of each layer, and further reducing the misjudgment condition of the lithological interpretation and improving the accuracy of the lithological interpretation through layered statistics and standardization of the lithological indexes.

The invention is suitable for the technical field of geological drilling equipment, and provides a coal field geological drilling coring device which comprises a rack, a mounting plate, a coring cylinder, a first stepping motor, a lifting mechanism and a stabilizing mechanism, and the stabilizing mechanism comprises a stabilizing plate, an elastic telescopic rod, a guide sleeve and a shear fork mechanism; the coal field geological drilling coring device further comprises an auxiliary assembly, the auxiliary assembly comprises an arc-shaped plate, a connecting ring, a connecting rod and a switching mechanism, and the switching mechanism comprises a side plate, a winding wheel, a winding rope and a volute spiral spring. According to the coal field geology drilling coring device, the rack, the mounting plate, the coring barrel, the first stepping motor, the lifting mechanism and the stabilizing mechanism are arranged, when the coring barrel gradually goes deep, an elastic telescopic rod enables the acting force of a stabilizing plate on the coring barrel to be gradually increased, and the stability of the coring barrel in the drilling process is improved; and the situation that the coring quality is affected due to the fact that the coring barrel gradually goes deep and vibration is intensified is avoided.

The invention provides a coal gangue crusher, and belongs to the technical field of coal field geological exploration. The coal gangue crusher comprises a jaw type crushing body and a feeding hopper arranged at the top end of the jaw type crushing body, a feeding port is formed in one side of the feeding hopper, a discharging port is formed in the bottom end of the feeding hopper, a horizontal anti-blocking frame is arranged in the feeding hopper, and a large feeding channel and multiple rows of small feeding channels are arranged on the surface of the horizontal anti-blocking frame. The large feeding channels penetrate through the horizontal anti-blocking frame in the axial direction, every two adjacent rows of small feeding channels are distributed in the axial direction of the horizontal anti-blocking frame in a staggered mode, the small feeding channels are used for allowing small coal gangue to pass through, the two ends of the horizontal anti-blocking frame are rotationally matched with the two side walls of the feeding hopper, and a power device for driving the horizontal anti-blocking frame to rotate is arranged at the top end of the feeding hopper. And when the horizontal anti-blocking frame rotates, the large feeding channel and the small feeding channel pass through the feeding port from bottom to top. The coal gangue pre-crushing device has the advantages of blockage prevention, coal gangue pre-crushing, long service life and high stability.

The invention discloses a deep coal seam carbon dioxide geological sequestration potential evaluation method for a high-exploration-degree coal field, and relates to the technical field of deep coal seam carbon dioxide sequestration evaluation. The method comprises the following steps: firstly, on the basis of analyzing comprehensive geologic features of a coal loading area, determining a remaining coal seam reserve distribution rule; determining a coal-bearing stratum ground temperature and pressure gradient value, calculating a carbon dioxide sequestration critical depth, and determining a carbon dioxide geological sequestration main body depth; then preferably selecting a main area suitable for carbon dioxide sequestration; dividing carbon dioxide geological units according to construction conditions by taking a coal field as a unit; carbon dioxide geological unit division is carried out on each key block, and carbon dioxide sequestration amount calculation is carried out according to the units; and finally, optimizing the favorable area of the carbon dioxide sequestration unit by using an analytic hierarchy process-fuzzy evaluation method. According to the method, original coal field geological data are fully utilized, a large number of coal rock foundation geological parameters are easy to obtain, and a good theoretical basis is provided for subsequent realization of a regional dual-carbon target.

The utility model relates to the field of environment detection, in particular to coal field geological environment detection equipment. The coal field geological environment detection equipment comprises a supporting plate; a detection equipment body is arranged above the supporting plate; wherein a lifting assembly capable of moving up and down is arranged at the top of the supporting plate, and the detection equipment body can be driven to move through the lifting assembly; a buffer assembly is arranged above the supporting plate, and interference of external vibration on the detection equipment body can be reduced through the buffer assembly. According to the coal field geological environment detection equipment provided by the utility model, the vibration of the equipment can be reduced through the arrangement of the buffer assembly, the coal field geological environment is often complex and changeable, including but not limited to uneven ground, frequent vibration and the like, and the vibration of the equipment can be reduced through the additional arrangement of the buffer assembly. The influence of unstable factors caused by external vibration or equipment motion on a detection result can be effectively reduced, and the working stability of the equipment in a complex terrain is improved.

The invention provides a continuous and accurate temperature measurement and fire extinguishing robot system for a coal pile and a using method of the continuous and accurate temperature measurement and fire extinguishing robot system. The continuous and accurate temperature measurement and fire extinguishing robot system comprises an unmanned aerial vehicle infrared temperature measurement imager, the unmanned aerial vehicle infrared temperature measurement imager, the crawler-type intelligent mobile robot and the insertion type temperature measurement fire extinguishing rod are connected with the coal yard stacking spontaneous combustion prevention temperature monitoring and alarming system, and continuous and accurate monitoring, automatic early warning and rapid fire extinguishing treatment of the surface temperature and the deep layer temperature of a coal pile can be achieved. A three-dimensional model is formed by scanning a coal pile through an unmanned aerial vehicle; the temperature-measuring fire-extinguishing rod controls the insertion depth of the screw according to temperature sensing; the temperature-measuring fire-extinguishing rod releases liquid nitrogen according to an instruction issued by the system; the coal yard spontaneous combustion prevention temperature monitoring and alarming system is constructed, and the functions of accurate and rapid temperature measurement of a coal pile, remote monitoring of the temperature of the coal pile, overtemperature release of liquid nitrogen for cooling and the like are achieved. Compared with traditional on-site temperature measurement, coal pile safety management work is better facilitated, and potential safety hazard checking is enhanced.

The present application relates to geological exploration technical field, disclose a kind of thick loess plateau area coalfield 3D seismic exploration method, comprising the following steps: S101, artificial seismic source shooting record and superficial Rayleigh wave detector data are collected;S102, grid division is carried out to target area, and set to be inverted parameter;S103, vertical ray path time estimation, multilayer medium dispersion forward and poststack energy estimation are carried out;S104, according to first wave arrival time observation value, Rayleigh wave observation dispersion curve, theoretical ray path time, phase velocity and poststack energy generates multi-target error function;S105, target area is divided into three subdomains, differential evolution iteration is carried out, until local convergence;S106, establish a plurality of parallel annealing chain, set chain temperature and gradually decrease by chain, optimize to be inverted parameter, output optimal to be inverted parameter;S107, the static correction time difference and absorption compensation coefficient of each acquisition point are calculated.The present application improves coal seam structure imaging precision and exploration data reliability under complex surface conditions.

The present invention relates to the field of geophysical exploration technology, and specifically discloses a method for monitoring the fire extinguishing effect of magnetized grouting in a coalfield fire area and a method for locating a re-ignition area. The monitoring method comprises: fully stirring and mixing magnetizable alloy powder particles with ultrafine bentonite powder, surfactant, and water, drying, magnetizing, crushing, and mixing with original slurry to obtain a mixed grouting slurry; determining a magnetic scanning area based on the projection range of the underground coalfield hidden fire area on the ground, and performing a magnetic scanning to obtain initial magnetic anomaly information; installing a magnetizing coil; injecting mixed grouting slurry into underground burnt areas and cracks, and magnetizing the mixed grouting slurry through a magnetizing coil; performing a magnetic scanning area to obtain magnetic anomaly information after grouting, and then determining the spatial distribution form of the slurry in combination with the initial magnetic anomaly information to judge the grouting fire extinguishing effect. The present invention can clearly identify the distribution form of underground slurry, thereby achieving the purpose of detecting the grouting fire extinguishing effect.

This invention discloses a method for optimizing and numerically simulating hydrological parameters of coalfield aquifers, relating to the field of coalfield hydrogeological exploration and groundwater numerical simulation technology. The method includes the following steps: Step S1: Obtain drilling monitoring data and historical hydrogeological data from multiple boreholes within the target coalfield area, construct an initial aquifer structure model, and generate an initial hydrological parameter field based on the initial aquifer structure model; Step S2: Based on the initial hydrological parameter field, construct an initial groundwater numerical simulation model, and calibrate and verify the initial groundwater numerical simulation model using preset observation well water level data to obtain a benchmark numerical simulation model; Through distributed fiber optic temperature and strain dual-field monitoring, and coupled Bayesian inversion of heat, solid, and fluid, this method overcomes the limitations of traditional pumping / pressure water tests, which suffer from single-point discretization, time lag, and the inability to obtain only static averages.

The invention discloses a geologic model dynamic updating method and system based on earthquake intelligent interpretation driving, and belongs to the field of three-dimensional geologic modeling, and the method comprises the steps: collecting open coal field earthquake data, dividing training, verification and test sets, and constructing a general fault feature extractor based on AI model architecture offline pre-training; importing actual data of a mining area, picking up a coal seam, intercepting a time window data body to form a training set fitting local geology, migrating and finely tuning an upper network to output a fault probability body, and processing to construct an initial three-dimensional geologic model; then, an increment label is generated in combination with tunneling / stoping disclosure information, and AI model architecture parameters are finely adjusted by using the increment label when a set threshold value is reached; and finally, recalculating by using the updated model to finish updating of the model synchronous with mining. By adopting the method and the system, full-chain closing of excavation disclosure-earthquake intelligent interpretation-three-dimensional geologic model dynamic updating is realized, and the method and the system have relatively high practicability and innovativeness in practice.

The invention relates to the technical field of catalyst preparation, in particular to a coal-fired catalyst and a preparation method and application thereof.The coal-fired catalyst is at least prepared from, by weight, 180-300 parts of organic salt solution, 200-350 parts of inorganic salt solution and 50-70 parts of water, the organic salt solution at least comprises pyridinium acetate or sodium benzoate, and the inorganic salt solution at least comprises ammonium acetate or sodium benzoate; the problems that an existing oxygen supply combustion-supporting additive is poor in using effect, coal cannot be fully combusted, and the combustion efficiency cannot be remarkably improved are solved, and the application requirement of the subsequent fire coal field is better met.

The invention relates to the technical field of Jurassic coal fields, and discloses a green mining grouting device and mining method for Jurassic coal fields, and the method comprises the following steps: S1, exploring the development height of a water flowing fractured zone; s2, probing the influence range of the water flowing fractured zone; s3, determining a target aquifer for main prevention and control; s4, determining a grouting treatment target; s5, grouting treatment is carried out on the treatment target determined in the step S4 by adopting a method of drilling and grouting through a drill rod and a material conveying rod; and S6, the green mining effect is inspected. A monitored area is drilled through a drill rod, a material conveying rod is inserted into the drill rod, the material conveying rod reaches a sealing head, and cement is injected along a channel when the material conveying rod is inserted into an inner hole of the sealing head to be opened, so that grouting plugging can be conducted on high-angle cracks, the workload of green mining treatment is reduced, and the working efficiency is improved. The water prevention and control cost is reduced for mine water prevention and control work, and benefits are increased.

The invention provides a coal field exploration sample classification transfer box. The coal field exploration sample classification transfer box structurally comprises an electrifying structure, a bearing box, a heat dissipation end, a control panel and a novel loading structure. After the novel loading structure is further improved, six groups of independent loaders in the two groups of thermotanks of the two groups of novel loading structures can be used for loading six samples into the storage grooves of the loading box one by one, so that the samples are not communicated with one another in the thermotanks; through temperature balance of the constant-temperature box, it can be ensured that the temperature of the sample is kept in a proper state and is not greatly changed due to external influence; two groups of novel loading structures are matched to replace an original large-volume form for use; and three groups of independent loaders are arranged in each group of thermotanks, so that the samples can be taken out quickly and simultaneously, and then the types of the samples are identified by using label auxiliary blocks.

The present invention relates to a coal balance monitoring device and method for a coal-fired power plant, including a ship unloader, a physical weighing verification mechanism, a belt conveyor assembly and a coal feeder. The belt conveyor assembly includes a plurality of belt conveyors, one of which is provided with an inlet belt scale and the other is provided with an upper warehouse belt scale. The physical weighing verification mechanism includes a coal bunker, a coal bunker scale and a feeder. The ship unloader is connected to the coal bunker, and the feeder is connected to the belt conveyor assembly. The present invention corrects the inlet belt scale and the upper warehouse belt scale through an online physical weighing verification mechanism to make up for the deviation of the cumulative flow of the belt scale caused by the deficiency of relying solely on dynamic chain code verification; the average density of the coal pile at the typical volume is obtained by physically measuring each type of coal, and the real-time average density of specific coal types in each area of ​​the coal yard is obtained by the difference method, eliminating the error of the coal pile density measured by only artificial simulation method or digging method, saving time and labor, laying a foundation for the construction of digital power plants, and meeting the requirements of on-site space transformation for coal-fired units in service.

The application discloses a coalfield aquifer hydrological parameter optimization and numerical simulation method, relates to the technical field of coalfield hydrogeological exploration and groundwater numerical simulation, and comprises the following steps: step S1: obtaining drilling monitoring data and historical hydrogeological data of a plurality of drill holes in a target coalfield region, constructing an initial aquifer structure model, and generating an initial hydrological parameter field based on the initial aquifer structure model; step S2: constructing an initial groundwater numerical simulation model based on the initial hydrological parameter field, calibrating and verifying the initial groundwater numerical simulation model by using preset observation well water level data, and obtaining a benchmark numerical simulation model; through distributed optical fiber temperature and strain double-field monitoring, thermal, solid and flow coupling Bayesian inversion, the limitations of traditional pumping / pressure water tests, such as single-point dispersion, time lag and only static mean value acquisition, are broken through.

The present application relates to the technical field of Jurassic coalfield, and discloses a kind of green exploitation grouting device and exploitation method of Jurassic coalfield, comprising the following steps: S1: the development height of water-conducting fracture zone is inquired;S2: the influence range of water-conducting fracture zone is inquired;S3: the purpose aquifer of main prevention and cure is determined;S4: the grouting target is determined;S5: the grouting target determined in S4 is grouted by drilling and feeding rod drilling+grouting method;S6: the effect of green exploitation is tested.Drilling is carried out on the monitoring area by drill rod, a feeding rod is inserted into the inside of the drill rod, the feeding rod reaches the sealing head, when the inside hole of the feeding rod inserted into the sealing head is opened, and then cement is injected along the channel, so that the high-angle fracture can be grouted and plugged, the workload of green exploitation treatment is reduced, the cost of mine water prevention and control is reduced, and the benefit is increased.

The invention discloses a coal field geology geophysical exploration data acquisition device, and relates to the technical field of coal field geology exploration, the coal field geology geophysical exploration data acquisition device comprises a supporting ring, the top of the supporting ring is fixedly connected with four L-shaped rods, the ends, away from the supporting ring, of the four L-shaped rods are jointly and fixedly connected with a supporting disc, and the supporting disc is located at the top of the supporting ring; through mutual cooperation of a second motor, a drill bit, a hammering disc, an air cylinder and other structures, the hammering disc can be firstly placed on the front side of the top of a supporting ring, a T-shaped plate on the top of the hammering disc is aligned with T-shaped grooves in limiting plates, then the hammering disc is pushed backwards, the hammering disc drives the T-shaped plate to move, the T-shaped plate moves into the T-shaped grooves in the two limiting plates, and therefore the purpose that the T-shaped plate is driven to move is achieved. And a threaded hole in the hammering disc is aligned with a threaded hole in the transverse plate, a threaded rod penetrates through the threaded hole in the transverse plate in a threaded mode and enters the threaded hole in the hammering disc, and further installation of the hammering disc is completed.

The invention discloses a positioning and monitoring method and system for coal yard personnel. The method comprises the following steps: constructing a positioning reference map of a coal yard; based on operation requirements, determining an optimal operation track of the coal yard personnel, and mapping the optimal operation track to the positioning reference map to obtain a standard positioning track and a critical positioning point of the coal yard personnel in the positioning reference map; actual positioning information of the coal yard personnel is obtained in real time, the operation condition of operation machinery in the operation process of the coal yard personnel is monitored in real time, and a positioning risk coefficient of the coal yard personnel is generated according to the actual positioning information, the position relation between the standard positioning track and the critical positioning point and the operation condition result; and judging whether the positioning of the coal yard personnel has a risk according to the positioning risk coefficient, and if so, sending a corresponding preset reminding signal to the coal yard personnel to improve the working efficiency of the coal yard personnel on the premise of ensuring the safety of the coal yard personnel and the mechanical equipment.

The invention relates to the technical field of coal field fire extinguishing, and discloses a coal field fire extinguishing system based on unmanned aerial vehicle collaborative operation, first extrusion plates are installed at the two end faces of the lower surface of a pressing plate, springs are symmetrically arranged on one side face of a connecting plate, and clamping plates are arranged at one ends of the springs; a second extrusion plate is mounted on one side surface of the clamping plate; a control box is installed on the lower surface of the water tank, a second water pipe is arranged on the lower surface of the control box in a penetrating mode, the lower end of the second water pipe communicates with a connecting pipe, the lower end of the connecting pipe communicates with a water spraying pipe, nozzles are symmetrically arranged on the lower surface of the water spraying pipe, and a water suction pump is arranged in the water tank. A first gear rotates through work of a motor, the angle of a water spraying pipe can be finely adjusted through meshing of the first gear, a second gear and a third gear, and meanwhile the purpose that a second rotating shaft rotates to stir the interior of a water tank is achieved through meshing of a first bevel gear and a second bevel gear.