109 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 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 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 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 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.

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 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 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.

This invention discloses a method, apparatus, medium, and equipment for three-dimensional seismic fault identification in coalfields, relating to the field of fault identification. The method includes: acquiring raw three-dimensional seismic data of the area to be measured; denoising the raw three-dimensional seismic data using a deep learning model to determine the denoised three-dimensional seismic data; constructing a ResU-Net model for coalfield seismic fault identification; training the ResU-Net model; using the trained ResU-Net model to perform fault identification on the denoised three-dimensional seismic data, generating a fault probability volume; retraining the trained ResU-Net model using a training set to iteratively optimize the fault probability volume, determining the optimized fault probability volume; and performing fault identification based on the optimized fault probability volume and geological interpretation requirements to obtain the identification results.

The invention relates to the technical field of coal mine safety and fire prevention and extinguishment, and discloses a coal field fire area multiphase foam flame-retardant fire extinguishing method and system.The coal field fire area multiphase foam flame-retardant fire extinguishing method comprises the following steps that S1, multiphase foam is prepared, the multiphase foam comprises a gas phase, a liquid phase and a solid phase, the gas phase is mixed gas of nitrogen and carbon dioxide, and the liquid phase is mixed gas of nitrogen and carbon dioxide; the liquid phase takes a bio-based surfactant as a base material and is compounded with a temperature response type epoxy resin emulsion, and the solid phase is composite flame-retardant particles; s2, the coal field fire area is investigated, an unmanned aerial vehicle carrying an infrared thermal imaging sensor and a gas sensor is used for scanning temperature distribution and crack positions of the fire area, and a three-dimensional thermodynamic diagram of the fire area is generated; and S3, obtaining the three-dimensional thermodynamic diagram of the fire area. By means of an intelligent investigation and conveying system, precise adaptation of a complex coal field fire area and efficient utilization of fire extinguishing resources are achieved, and the defects that in the prior art, under the heterogeneous geological condition, the number of coverage blind areas is large, and resource waste is large are overcome.

The utility model belongs to the technical field of coal field seismic exploration, and particularly relates to a coal field seismic exploration soil hole backfill quality detection device which comprises a probe rod and a handle assembly detachably installed at the top end of the probe rod, a movable column is installed on the inner side of the bottom of the probe rod in a sliding mode, and a pressure sensor is fixedly installed at the top end of the movable column. The other end of the pressure sensor is fixedly installed with a probe rod, a probe is installed at the bottom end of the movable column, a central processing unit with the input end electrically connected with the pressure sensor is arranged in the probe rod, and the output end of the central processing unit is wirelessly connected with a handheld terminal. According to the utility model, the backfill quality can be rapidly detected, the average detection time of the backfill quality of each soil hole is one minute, and the device is small in size, simple in structure, easy to operate, low in manufacturing cost, light in weight, convenient to carry, suitable for field large-scale exploration operation, high in detection efficiency and higher in practicability.

The utility model provides a water mist dust removal device and relates to the field of coal. The utility model relates to a water mist dust removal device, which comprises a dust collection air duct, a water mist dust removal device and a water mist dust removal device, wherein one end of the dust collection air duct is arranged in an area to be dedusted; a partition plate is arranged in the first water tank and divides the first water tank into a first space and a second space, and the other end of the dust collection air duct is connected with the first space; one end of the fan is connected with the second space; a water mist spray head is arranged at one end of the first water inlet pipe, the water mist spray head is arranged in the first water tank, and a first electromagnetic valve is arranged on the first water inlet pipe and used for controlling water injection into the first water tank; the water pump comprises a first water outlet pipe, and the first water outlet pipe is connected with the first water inlet pipe; and the central control system is connected with the fan, the first electromagnetic valve and the water pump in a wired or wireless mode. The water mist dust removal device is simple in structure, low in construction investment and good in dust removal effect.

The invention provides a coal field exploration sample classification transfer box which structurally comprises a splicing structure, a bearing block, a sealing box, a constant-temperature top cover, a control panel and a classification loading structure, the upper end face of the splicing structure vertically positions the sealing box through the bearing block, and the constant-temperature top cover is installed at the top of the sealing box and is electrically controlled through the side control panel; after the classified loading structure is further improved, the loading box is combined with the balance block to be parallelly inserted into the sealing box through the inserting groove of the limiting frame, then coal field samples are loaded into the loading groove and then transferred, and part of residual samples on the bottom layer in the loading box can be completely cleaned in the destination taking-out process in combination with the sweeping structure; and therefore, the bottom layer sample in the loading box can be linearly swept in a translation manner through a straight rod and a contact block of the sweeping structure, and the influence on subsequent recycling caused by the residues is prevented.

The utility model relates to a coal field geological exploration sampling device which comprises a coal field geological sampling barrel, a support is fixedly connected to the outer surface of the coal field geological sampling barrel, a supporting rod is rotationally connected to the support in a damping mode, a pressing plate is arranged at one end of the supporting rod, and lock catch structures are arranged on the supporting rod and the coal field geological sampling barrel. A steel chisel guide assembly I and a steel chisel guide assembly II which are used for limiting a steel chisel are arranged in the coal field geology sampling barrel, and linear driving structures are arranged on the steel chisel guide assembly II and the coal field geology sampling barrel; the lock catch structure comprises an elastic rope, the elastic rope is fixedly connected to the coal field geology sampling barrel, one end of the elastic rope is fixedly connected with a shackle, and the supporting rod is fixedly connected with a hanging lug used for hooking of the shackle; the number of the first steel chisel guide assemblies is one pair, and each first steel chisel guide assembly comprises a V-shaped support. The technical problem that in the prior art, when sampling steel chisels of different diameter types are used for auxiliary sampling, guiding and limiting applicability is low is solved.

This invention belongs to the technical field of thermoelectric conversion equipment, specifically a capsule-type thermal energy extraction method for coalfield fire zones. Addressing the problem that existing coalfield fire zone thermal energy extraction processes mostly require manual deployment, making it inconvenient to automatically deploy high-thermal-conductivity capsules, thus hindering penetration into the fire zone and insufficient capture of thermal energy, the present invention proposes the following solution, comprising the following steps: S1: Preparing an extraction device, which includes a vehicle body. A shell is fixedly installed on the top of the vehicle body, and ventilation openings are provided on both sides of the shell. Dustproof plates are fixedly installed in both ventilation openings. A first and second drilled hole are provided on the bottom inner wall of the shell, and a bracket is fixedly installed on the top of the shell. This invention facilitates the automatic deployment of high-thermal-conductivity capsules during use, enabling deep penetration into the fire zone for sufficient capture of thermal energy. It also has a cleaning function, facilitates continuous extraction operations, and features a simple structure and convenient use.

The invention discloses a coal field seismic exploration construction method without a base station and a pile number, which is applied to the technical field of geophysical exploration and comprises the following steps: S1, constructing a dynamic coordinate without a base station to realize positioning; s2, pile number-free digital construction is carried out; s3, synchronizing the wireless ad hoc network; s4, data acquisition; s5, data management; by implementing the method, the geophysical prospecting construction quality is improved, error-free integrated construction of three links of measurement, instruments and layout is ensured, and zero-error acquisition is realized; secondly, the production efficiency is improved, and the auxiliary track inspection time is shortened; and thirdly, the cost is reduced, and the allocation of personnel and the damage and loss rate of equipment are reduced. The method has the advantages of low cost, high efficiency and strong adaptability, and realizes high-precision and high-efficiency seismic data acquisition in a complex environment.

The invention relates to the technical field of mine safety engineering, in particular to mechanical coal field fire extinguishing equipment which comprises a rack sleeve, a hinge end is arranged on the outer cambered surface of the rack sleeve, an abutting end is arranged in the middle of the inner cambered surface of the rack sleeve, a step end is arranged at the position, close to the abutting end, of the rack sleeve, and the inner cambered surface of the step end is sleeved with a sealing cover. The inner arc face of the sealing cover is sleeved with a fire extinguishing fluid conveying cavity, and a pressing sleeve is sleeved between the sealing cover and the fire extinguishing fluid conveying cavity. A conical outer partition cover and an inner arc cover face of the first-stage fire extinguishing mechanism surround a fire extinguishing area, fire extinguishing force can be concentrated, medium loss is reduced, directional conveying of a fire extinguishing medium is achieved through cooperation of a permeation suite and a ventilation sleeve, it is ensured that the fire extinguishing medium accurately acts on the core portion of the fire area, and fire extinguishing efficiency is improved. And a frame structure and a heat insulation cover net of the second-stage fire extinguishing mechanism can complementarily cover the edge and the gap area of the fire area and cooperate with the first-stage fire extinguishing mechanism, the fire extinguishing range is widened, the fire extinguishing efficiency is improved, and fire re-combustion is effectively avoided.

The utility model discloses a rock core collecting device for coal field geological drilling, which comprises a box body unit, the box body unit is used for collecting rock cores, a jacking unit comprises a jacking assembly and a driving assembly, and the jacking assembly is used for lifting one end of a long-strip rock core; the driving assembly is connected with the jacking assembly and used for driving the jacking assembly to ascend and reset. According to the rock core collecting device for coal field geological drilling, by arranging the jacking unit, when a long-strip rock core needs to be taken out, the driving assembly can drive the jacking assembly to ascend, and a supporting block in the jacking assembly lifts one end of the long-strip rock core, so that a certain gap is formed between the rock core and the placing plate, and a worker can easily take out the rock core conveniently; the problems of difficulty in operation and damage to the rock core caused by difficulty in taking out the rock core are solved, and the integrity of the rock core sample is ensured.

The invention discloses a coal field fire area space-time grading adaptation loss reduction extinguishing control and ecological restoration cooperation method. The method comprises the steps that distribution characteristics of the combustion area, temperature and degree of a coal well field fire area and space distribution characteristics and geometric parameters of a roadway-seam-gap multi-scale air leakage oxygen supply channel are obtained; the fire area is preliminarily divided into a shallow area, a middle area and a deep area in the vertical direction; with the ignition temperature as the upper limit temperature, the combustion degree of the fire area is divided into three grades of low temperature, medium temperature and high temperature; determining an adaptive technology and a proper time sequence, and forming a coal well field fire hazard'time-space-grading-adaptive 'environment loss extinguishing control method; an ecological restoration water-resisting layer, a water-containing layer and a loess ecological layer are constructed on the basis of the coal well field fire disaster'time-space-classification-adaptation 'environment loss reduction and control method. According to the method, a'time-space-classification-adaptation 'loss reduction extinguishing control method is provided, the damage degree of coal well field fire area treatment to the environment is reduced, and the cost-benefit ratio of fire area treatment to ecological restoration is reduced.