Method and device for determining pre-mining water disaster prevention and control range of coal mine stope face

Abstract

The invention provides a method and device for determining a pre-mining water disaster prevention and control range of a coal mine stope face, and belongs to the technical field of coal mine safety. The method comprises the steps that peripheral data of the coal mine stope face and a water disaster prevention and control range calculation formula are obtained; wherein the peripheral data comprises the thickness of a coal seam to be mined, the peripheral water pressure of a target area and the tensile strength of coal, and inputting the peripheral data into a water disaster prevention and control range calculation formula; and determining the peripheral water disaster prevention and control range of the coal mine stope face according to the water disaster prevention and control range calculation result. According to the method, the water disaster exploration and treatment range of the periphery of the coal mine stope face threatened by the water disaster can be accurately defined, and a solid basis is provided for prevention and treatment of the coal mine water disaster, so that the prevention and treatment capacity of the coal mine water disaster is improved, safe production of a mine is ensured, and the water prevention and treatment cost of the mine is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of coal mine safety technology, and in particular to a method and device for determining a pre-mining water hazard prevention and control range of a coal mine recovery working face. Background Art

[0002] During the mining process, all underground coal mines are often threatened by various water hazards such as surface water, roof water, floor water, old empty water, and structural water due to differences in the hydrogeological conditions of the mines. Due to the lack of preventive measures, these water hazards often lead to water inrush incidents and even cause mine flooding accidents. According to Article 41 of the "Detailed Rules for Coal Mine Water Prevention and Control", before the working face is mined, the water-richness of the old empty water and aquifers in the coal mining working face and its surroundings, as well as the water-containing (conducting) properties of faults and collapse columns must be thoroughly investigated. Therefore, for those mines threatened by water hazards, before the working face is mined, it is necessary to conduct a detailed investigation of the water hazards inside and outside the working face that may pose a threat to mining, and effectively control the water hazards found to ensure safe mining conditions on the working face.

[0003] However, in terms of water hazard prevention and control at the working face, the "Coal Mine Water Prevention and Control Regulations" and other relevant regulations do not provide clear regulations and calculation methods regarding the scope of exploration and control outside the working face. Summary of the invention

[0004] The embodiment of the present application provides a method and device for determining the pre-mining water hazard prevention and control range of a coal mine working face, so as to solve the problem of how to determine the pre-mining water hazard prevention and control range of a coal mine working face.

[0005] In a first aspect, an embodiment of the present application provides a method for determining a pre-mining water hazard prevention and control range of a coal mine working face, comprising:

[0006] Obtain peripheral data of the coal mine working face and a calculation formula for the water hazard prevention range; wherein the peripheral data includes the thickness of the coal seam to be mined, the peripheral water pressure of the target area, and the tensile strength of the coal;

[0007] Inputting the peripheral data into the water hazard prevention range calculation formula;

[0008] The water hazard prevention and control scope outside the coal mine working face is determined based on the calculation results of the water hazard prevention and control scope.

[0009] In a possible implementation, before obtaining the peripheral data of the coal mine working face and the water hazard prevention range calculation formula, the method further includes:

[0010] Acquire geological data and water level data of the coal mine working face; wherein the geological data includes fault information, lithology distribution information and fold information;

[0011] Determine the probability of water disasters occurring in different areas based on the geological data and water level data;

[0012] The area where the probability of water disaster occurrence is greater than a set threshold is determined as the target area.

[0013] In a possible implementation, determining the probability of water disasters occurring in different areas according to the geological data and the water level data includes:

[0014] Determine the roof water hazard risk score, the bottom water hazard risk score, the old space water hazard risk score, and the structural water hazard risk score respectively according to the geological data and the water level data;

[0015] The probability of water disasters in different areas is determined by comprehensively considering the roof water disaster risk score, the bottom plate water disaster risk score, the old space water disaster risk score and the structural water disaster risk score.

[0016] In a possible implementation, the water hazard prevention range calculation formula is:

[0017]

[0018] Among them, L is the water hazard prevention range outside the mining face; K is the safety factor; M is the thickness of the coal seam to be mined; p is the peripheral water pressure of the target area; K P is the tensile strength of coal.

[0019] In a possible implementation, the safety factor ranges from 2 to 5.

[0020] In a possible implementation manner, before inputting the peripheral data into the water hazard prevention range calculation formula, the method further includes:

[0021] Obtain hydrogeological conditions, physical properties of coal seams, and historical water events;

[0022] The safety factor is determined based on the hydrogeological conditions, the physical properties of the coal seam and the historical water disaster events.

[0023] In a possible implementation, determining the safety factor according to the hydrogeological conditions, the physical properties of the coal seam and the historical water disaster events includes:

[0024] The safety factors for different areas and time periods are determined based on the hydrogeological conditions, the physical properties of the coal seams and the historical water disaster events.

[0025] In a second aspect, the embodiment of the present application provides a device for determining a pre-mining water hazard prevention and control range of a coal mine working face, comprising:

[0026] The acquisition module is used to obtain the peripheral data of the coal mine working face and the calculation formula for the water hazard prevention range; wherein the peripheral data includes the thickness of the coal seam to be mined, the peripheral water pressure of the target area, the tensile strength of the coal,

[0027] An input module, used for inputting the peripheral data into the water hazard prevention range calculation formula;

[0028] The determination module is used to determine the water hazard prevention and control scope outside the coal mine working face according to the calculation results of the water hazard prevention and control scope.

[0029] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method described in the first aspect or any possible implementation of the first aspect are implemented.

[0030] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps of the method described in the first aspect or any possible implementation of the first aspect.

[0031] The embodiment of the present application provides a method and device for determining the scope of water hazard prevention and control before mining of a coal mine working face, by obtaining peripheral data of the coal mine working face including key parameters such as the thickness of the coal seam to be mined, the peripheral water pressure of the target area, and the tensile strength of the coal, and inputting these peripheral data into the water hazard prevention and control range calculation formula, an accurate calculation result is obtained. Based on this calculation result, the specific scope of water hazard prevention and control outside the mining working face is determined. The present application can accurately define the scope of water hazard detection and control outside the coal mine working face threatened by water hazards, provide a solid basis for the prevention and control of coal mine water hazards, thereby improving the coal mine water hazard prevention and control capabilities, ensuring the safe production of the mine, and effectively reducing the cost of mine water prevention and control. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 It is a flow chart for implementing a method for determining a pre-mining water hazard prevention and control range of a coal mine working face provided by an embodiment of the present application;

[0034] Figure 2It is a schematic diagram of determining the pre-mining water hazard prevention and control range of a coal mine working face provided by an embodiment of the present application;

[0035] Figure 3 It is a structural schematic diagram of a device for determining a pre-mining water hazard prevention and control range of a coal mine recovery working face provided by an embodiment of the present application;

[0036] Figure 4 It is a schematic diagram of the structure of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0037] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0038] The terms "first", "second", etc. in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present application described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0039] Unless otherwise specified, the term "plurality" means two or more. The character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B. The term "and / or" is a description of the association relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or, A and B.

[0040] The words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include the plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variants "comprises" and / or including (comprising) refer to the existence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the existence or addition of one or more other features, wholes, steps, operations, elements, components and / or these groups. In the absence of more restrictions, the elements defined by the statement "including one..." do not exclude the existence of other identical elements in the process, method or device including the elements.

[0041] In this application, each embodiment may focus on the differences from other embodiments, and the same or similar parts between the embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts may refer to the description of the method part.

[0042] For mining faces facing the threat of water damage, the hydrogeological conditions of the coal mining face and its surroundings must be thoroughly investigated before mining, and comprehensive and integrated management of any hydrological anomalies found must be carried out to ensure that the face meets the standards for safe mining.

[0043] The purpose of the present invention is to use the method of setting up water-proof coal (rock) pillars for water-bearing or water-conducting faults in the "Detailed Rules for Water Control in Coal Mines" to determine the peripheral water hazard control range of the coal mine recovery working face threatened by water hazard. At the same time, the present invention is suitable for pre-mining water hazard control of the coal mine recovery working face, and provides a calculation formula for determining the water hazard control range to improve the accuracy of the water hazard detection and control range of the peripheral water hazard of the coal mine recovery working face threatened by water hazard.

[0044] In order to make the purpose, technical solutions and advantages of the present application clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0045] Figure 1 : is a flow chart of a method for determining a pre-mining water hazard prevention and control range of a coal mine working face provided in an embodiment of the present application, such as Figure 1 As shown, the method comprises the following steps:

[0046] S101, obtaining peripheral data of the coal mine working face and a calculation formula for the water hazard prevention and control range; wherein the peripheral data includes the thickness of the coal seam to be mined, the peripheral water pressure of the target area and the tensile strength of the coal.

[0047] The execution subject of each embodiment of the present application can be a server, processor, microprocessor or other equipment with data processing function to realize the automated processing process of the pre-mining water hazard prevention and control range of the coal mine recovery working face. In the actual implementation process, the specific implementation method of the execution subject can be selected according to actual needs, and this embodiment does not impose any special restrictions on this, as long as it is a device with data processing function.

[0048] The thickness of the coal seam to be mined is determined by consulting the tunneling data of the coal mine recovery working face, which records in detail the measurement data of the coal seam thickness during the tunneling process. At the same time, combined with the mining design documents, which contain the planning requirements for the thickness of the coal seam mining. Taking these two aspects of information into consideration, a reasonable and accurate value of the thickness of the coal seam to be mined is determined in meters (m).

[0049] The peripheral water pressure of the target area needs to be determined by a detailed analysis of the hydrogeological data of the coal mine. By analyzing the hydrogeological data of the coal mine in detail, specific areas with water hazards can be identified. Through such analysis, the scope of water hazard prevention and control can be accurately defined for these target areas with water hazard risks. Doing so will not only help improve work efficiency, but also ensure the pertinence and effectiveness of prevention and control measures, thereby improving overall calculation efficiency and safety.

[0050] The tensile strength of coal is determined by collecting coal samples at different locations during the excavation of the mining face according to certain sampling specifications and intervals (for example, coal samples can be collected on the tunnel wall at certain intervals (such as 5 meters) to ensure that the collected coal samples can represent the overall characteristics of the coal seam), and sending the collected coal samples to a professional laboratory for testing and analysis. The tensile strength of coal is determined using special experimental equipment and testing methods, and the unit is megapascal (MPa).

[0051] S102, inputting the peripheral data into the water hazard prevention and control range calculation formula.

[0052] S103, determining the water hazard prevention and control range outside the coal mine working face according to the calculation result of the water hazard prevention and control range.

[0053] Determine the specific scope of exploration and control based on the calculation results. For example, if the calculation results in L = 45.28m, then in actual operation, it is necessary to take the relevant key points of the mining face (such as the end point of the material transport tunnel, the end point of the cutting eye, etc.) as the center and determine a circular area with a radius of 45.28m as the peripheral water hazard exploration and control range. Within this range, it is necessary to adopt appropriate exploration techniques (such as drilling, geophysical exploration, etc.) and control measures (such as drainage, grouting reinforcement, etc.) to ensure the safety of mining face.

[0054] In this embodiment, by obtaining peripheral data of the coal mine recovery working face including key parameters such as the thickness of the coal seam to be mined, the peripheral water pressure of the target area, and the tensile strength of the coal, and inputting these peripheral data into the water hazard prevention and control range calculation formula, an accurate calculation result is obtained. Based on this calculation result, the specific scope of water hazard prevention and control outside the recovery working face is determined. This application can accurately define the scope of water hazard exploration and control outside the coal mine recovery working face threatened by water hazards, provide a solid basis for the prevention and control of coal mine water hazards, thereby improving the coal mine water hazard prevention and control capabilities, ensuring the safe production of mines, and effectively reducing the cost of mine water prevention and control.

[0055] Based on the above embodiments, in different embodiments, the methods of determining the target area are different.

[0056] In a possible implementation, before obtaining the peripheral data of the coal mine working face and the water hazard prevention range calculation formula, it also includes:

[0057] Obtain geological data and water level data of the coal mine working face; the geological data includes fault information, lithology distribution information and fold information;

[0058] Determine the probability of water disasters in different areas based on geological data and water level data;

[0059] The area where the probability of water disaster occurrence is greater than the set threshold is determined as the target area.

[0060] In this embodiment, by acquiring geological data and water level data including fault information, lithology distribution information and fold information, the probability of water disasters in different areas is comprehensively determined, the accuracy of possible water disasters is improved, precise prevention is achieved, and mine safety is improved.

[0061] In other possible implementations, in order to improve the accuracy of determining the probability of water disasters in different areas, geological data include but are not limited to fault information, lithology distribution information and fold information. Specifically, it also includes coal seam information, coal seam roof and floor rock information, magma activity information, river activity information, etc.

[0062] In a possible implementation, the probability of water disasters in different areas is determined based on geological data and water level data, including:

[0063] Determine the roof water hazard risk score, the bottom water hazard risk score and the aquifer risk score respectively based on the geological data and the water level data;

[0064] The probability of water disasters in different areas is determined by combining the roof water disaster risk score, bottom plate water disaster risk score and aquifer risk score.

[0065] The geological data acquisition process is as follows:

[0066] By collecting detailed geological survey reports of coal mining areas, we can obtain key information such as the specific location, direction, inclination, drop of faults, rock types and water content (conductivity) of fault zones. In addition, we conduct on-site surveys at the mining face and its adjacent areas, and use professional measuring tools such as geological compasses and total stations to further accurately determine the location and related parameters of faults to ensure that the fault information obtained is both accurate and comprehensive.

[0067] Lithology distribution information is determined by analyzing core samples obtained from geological drilling in the coal mine area to determine the rock types of different strata. Combining geological survey reports and on-site observation data, a lithology distribution map is drawn to accurately indicate the rock types, thicknesses, and change trends in each area. Special attention should be paid to the rock characteristics of the top and bottom plates of the coal seams, such as whether the top plate of the coal seam is composed of sandstone with developed cracks, and whether the bottom plate is composed of mudstone and its water-proof performance is poor.

[0068] According to the geological survey report and on-site geological survey, the location and morphology of the folds (including the tightness and axial direction of the folds, etc.), as well as their relationship with other geological structures (such as faults) are determined. By measuring key parameters such as the wing angle of the folds, the potential impact of the folds on water damage can be accurately assessed.

[0069] By sorting out the long-term water level observation records in the mine, we can understand the dynamic changes of water levels in different aquifers and water level information related to the coal mining face. Set up water level observation points at the mining face and its surrounding areas, and use water level sensors and other equipment to monitor water level changes in real time to ensure that the latest and accurate water level data is obtained.

[0070] In addition, according to the actual situation of the coal mine and past experience, the weights of the influence of fault information, lithology distribution information, fold information and water level data on the probability of water disasters are determined. For example, the weight of fault information can be set to 0.3, the weight of lithology distribution information is 0.3, the weight of fold information is 0.2, and the weight of water level data is 0.2 (the weights can be adjusted according to the actual situation).

[0071] Specifically, when there are many faults, the drop is large or the faults are water-conducting, the risk score is high. The scoring criteria can be set based on the fault density, drop and water-conducting capacity. For example, when there are more than 5 faults per square kilometer and the drop is more than 10 meters, or when the faults are obviously water-conducting, the risk score increases. When the fault is close to the coal mining face, the risk score should be increased.

[0072] When the coal seam roof is sandstone and has developed fissures, the score is based on the density and width of the fissures. The risk score increases with increasing fissure density and width. The risk score also increases when the roof is closely hydraulically connected to the aquifer.

[0073] When the coal seam floor is mudstone and has poor water-proof performance, the score is based on the mudstone water-proof performance. The higher the permeability, the higher the risk score. When the floor is closely connected to the aquifer hydraulically, the risk score increases.

[0074] When the aquifer is sandstone with high porosity and thickness, the score is based on porosity and thickness. The larger the product of porosity and thickness, the higher the risk score. When the aquifer is closely connected to the coal mining face hydraulically, the risk score increases.

[0075] The risk score is high when the fold is tightly closed, has a specific axial direction and is closely related to other geological structures. The risk score is increased when the fold axis is at a specific angle to the strike or dip of the coal mining face and the groundwater flow direction is consistent. The risk score is increased when the fold is cut by a fault.

[0076] The risk score increases when the water level is higher than the coal mining face and the water level difference is large, or when the water level fluctuates greatly near the coal mining face.

[0077] Finally, based on the weights of the influence of each factor on the probability of water damage determined above and the water damage risk score based on these factors, the historical water damage experience of coal mines, production safety requirements, economic environment and other factors are taken into consideration to set the threshold. For example, in some coal mines with higher requirements for water damage prevention, the threshold may be set to 0.6. Then, the calculated probability of water damage in each area (P) is compared with the set threshold. The areas where the probability of water damage exceeds the threshold are determined, and these areas will be identified as target areas. These target areas will serve as the focus of subsequent acquisition of peripheral data and calculation of water damage prevention and control scope.

[0078] This embodiment analyzes geological and water level data to accurately identify areas with high probability of water damage and determine target areas. This method avoids indiscriminate exploration and control, improves the pertinence of water damage prevention and control, and reduces resource waste. After clarifying the goal, limited resources are concentrated in key areas to improve resource utilization efficiency and reduce costs. Comprehensively predicting the possibility of water damage by combining multiple factors is more accurate than single factor analysis, providing solid protection for coal mine safety.

[0079] In a possible implementation, the water hazard prevention range calculation formula is:

[0080]

[0081] Among them, L is the water hazard prevention range outside the mining face; K is the safety factor; M is the thickness of the coal seam to be mined; p is the peripheral water pressure of the target area; K P is the tensile strength of coal.

[0082] In a possible implementation, the safety factor ranges from 2 to 5. In a preferred embodiment, the safety factor is 5, and accordingly, the calculation formula for the water hazard prevention range is:

[0083]

[0084] In a possible implementation, before the peripheral data is input into the water hazard prevention range calculation formula, the following is also included:

[0085] Obtain hydrogeological conditions, physical properties of coal seams, and historical water events;

[0086] The safety factor is determined based on the hydrogeological conditions, the physical properties of the coal seam and historical water disasters.

[0087] Among them, the hydrogeological conditions and physical properties of the coal seams are determined by consulting the detailed hydrogeological survey report of the coal mine area. The historical archives of the coal mine, including production records, accident reports, maintenance records, etc., are consulted to screen out all records of events related to water damage. These records should include the time, location, detailed description (such as roof water damage, floor water damage, old empty water damage and other specific types) of the water damage event and the extent of the loss caused (such as the size of the flooded area, equipment damage, casualties, etc.).

[0088] Based on the hydrogeological conditions, physical characteristics of coal seams and historical water disasters, the safety factor is determined to adapt to various situations more accurately. This enables coal mines to more effectively deal with water disaster risks during mining, reduce the probability of water disasters, ensure the safety of coal miners and the smooth progress of coal mine production, and thus improve the overall level of safety in coal mine production.

[0089] In one possible implementation, the safety factor is determined based on the hydrogeological conditions, the physical properties of the coal seam, and historical water disaster events, including:

[0090] The safety factors for different areas and time periods are determined based on the hydrogeological conditions, physical properties of the coal seams and historical water disasters.

[0091] The coal mining area is divided into different sub-areas according to the differences in hydrogeological conditions. For example, the area is divided into water-rich areas and water-poor areas according to the distribution and water-richness of aquifers; the area is divided into structurally complex areas and structurally simple areas according to the distribution of faults and collapse columns. For each sub-area, the physical properties of the coal seams and the impact of historical water disasters are considered separately.

[0092] At the same time, different time periods are divided according to different stages of coal mining, such as the development stage, preparation stage, and mining stage. Different stages may face different water hazards. For example, the development stage may mainly face structural water hazards, and the mining stage may mainly face roof water hazards and old empty water hazards. For each period, the influence of hydrogeological conditions and the physical properties of coal seams are considered separately.

[0093] In this embodiment, the scope of water hazard prevention and control is determined according to the safety factor of different regions and time periods, so that coal mining enterprises can more reasonably allocate resources for water hazard prevention and control. For example, for areas with higher safety factors, more manpower, material resources and financial resources can be invested in detailed exploration and governance, while for areas with lower safety factors, resource investment can be appropriately reduced, thereby optimizing resource allocation and improving resource utilization efficiency.

[0094] by Figure 2 The specific embodiment shown is described to facilitate understanding of the process of determining the scope of water hazard prevention and control before mining in a coal mine working face:

[0095] Figure 2 The B mining face is arranged for the second coal seam of the A mine. There may be water hazards such as old empty water in the material transport lane and the periphery of the cutting hole of the B mining face of the second coal seam. This water hazard threatens the mining safety of the B mining face of the second coal seam of the mine. Before the B mining face is mined, it is necessary to conduct water hazard exploration and control within a certain range outside the B working face. The exploration and control range outside the B working face needs to be determined. The determination method is as follows:

[0096] 1) Determination of water pressure value of water hazards caused by old empty water in the periphery of the mining face: After checking the hydrological data of Mine A, it is found that there may be water hazards such as old empty water in the material transport lane and the periphery of the cutting eye of the No. B mining face. Through investigation, the highest water level of old empty water near the No. B mining face of Mine A is expected to be +60m. The elevations of the coal seam floor at the key points (A1, A4, B4) in the comparison chart are -289.94m, -344.72m, and -420.67m respectively. The water pressure values ​​of water hazards that may exist in the periphery of the key points A1, A4, and B4 of the No. B mining face are calculated to be 3.57MPa, 4.13MPa, and 4.90MPa respectively.

[0097] 2) Determination of the thickness of the coal seam to be mined: The thickness of the coal seam to be mined is determined based on the tunnel excavation data and mining design of the B mining face in Mine A. Here it is determined as 3.5m.

[0098] 3) The tensile strength of coal can be determined by taking a certain amount of coal samples for testing during the excavation of working face B. Here it is determined as 0.4MPa.

[0099] 4) After calculation, the perimeters of the key points A1, A4 and B4 of working face B that need to be explored and managed are 45.28m, 48.70m and 53.07m respectively.

[0100] 5) Scope of exploration and treatment outside the B working face:

[0101] ① The water hazard detection range outside the material transport tunnel of No. B working face is 45.28m~48.70m, which is the connecting line of C1 and C2 in the figure;

[0102] ②The water hazard detection range outside the cutting eye of working face B is 48.70m~53.07m, which is the connecting line of C2 and C3 in the figure.

[0103] The execution subjects of each embodiment of the present application can be servers, processors, microprocessors and other devices with data processing functions. In the actual implementation process, the specific implementation method of the execution subject can be selected according to actual needs. This embodiment does not impose any special restrictions on this, as long as the device has data processing functions.

[0104] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0105] The following is an embodiment of the device of the present application. For details not described in detail, please refer to the corresponding method embodiment described above.

[0106] Figure 3 : is a schematic diagram of the structure of a device for determining the pre-mining water hazard prevention and control range of a coal mine recovery working face provided by an embodiment of the present application, such as Figure 3 For the sake of convenience, only the parts related to the embodiment of the present application are shown. Figure 3 As shown, the device comprises:

[0107] The acquisition module 301 is used to obtain the peripheral data of the coal mine working face and the calculation formula of the water hazard prevention range; wherein the peripheral data includes the thickness of the coal seam to be mined, the peripheral water pressure of the target area, the tensile strength of the coal,

[0108] An input module 302 is used to input peripheral data into a water hazard prevention range calculation formula;

[0109] The determination module 303 is used to determine the water hazard prevention and control range outside the coal mine working face according to the calculation result of the water hazard prevention and control range.

[0110] The embodiment of the present application obtains peripheral data of the coal mine recovery working face, including key parameters such as the thickness of the coal seam to be mined, the peripheral water pressure of the target area, and the tensile strength of the coal, and inputs these peripheral data into the water hazard prevention and control range calculation formula to obtain an accurate calculation result. Based on this calculation result, the specific scope of water hazard prevention and control outside the recovery working face is determined. The present application can accurately define the scope of water hazard detection and control outside the coal mine recovery working face threatened by water hazards, provide a solid basis for the prevention and control of coal mine water hazards, thereby improving the coal mine water hazard prevention and control capabilities, ensuring the safe production of mines, and effectively reducing the cost of mine water prevention and control.

[0111] Figure 4 Schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Figure 4 As shown, the electronic device 4 of this embodiment includes: a processor 40, a memory 41, and a computer program 42 stored in the memory 41 and executable on the processor 40. When the processor 40 executes the computer program 42, the steps in the above-mentioned method for determining the pre-mining water hazard prevention and control range of each coal mine working face are implemented, for example Figure 1 Alternatively, when the processor 40 executes the computer program 42, the functions of the modules / units in the above-mentioned device embodiments are realized, for example Figure 3 The functions of each module are shown.

[0112] Exemplarily, the computer program 42 may be divided into one or more modules / units, which are stored in the memory 41 and executed by the processor 40 to complete the present application. The one or more modules / units may be a series of computer program instruction segments that can complete specific functions, and the instruction segments are used to describe the execution process of the computer program 42 in the electronic device 4. For example, the computer program 42 may be divided into Figure 3 The modules shown.

[0113] The electronic device 4 may be a computing device such as a desktop computer, a notebook, a PDA, or a cloud server. The electronic device 4 may include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art will appreciate that Figure 4 It is only an example of the electronic device 4 and does not constitute a limitation of the electronic device 4. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0114] The processor 40 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0115] The memory 41 may be an internal storage unit of the electronic device 4, such as a hard disk or memory of the electronic device 4. The memory 41 may also be an external storage device of the electronic device 4, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 4. Further, the memory 41 may also include both an internal storage unit and an external storage device of the electronic device 4. The memory 41 is used to store the computer program and other programs and data required by the electronic device. The memory 41 may also be used to temporarily store data that has been output or is to be output.

[0116] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0117] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0118] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0119] In the embodiments provided in the present application, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are merely schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0120] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0121] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0122] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned method for determining the scope of water hazard prevention and control before mining in each coal mine mining face can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium.

[0123] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for determining the scope of water hazard prevention and control before mining in a coal mine working face, characterized in that: include: Obtain peripheral data of the coal mine working face and a calculation formula for the water hazard prevention range; wherein the peripheral data includes the thickness of the coal seam to be mined, the peripheral water pressure of the target area, and the tensile strength of the coal; Inputting the peripheral data into the water hazard prevention range calculation formula; The water hazard prevention and control scope outside the coal mine working face is determined based on the calculation results of the water hazard prevention and control scope.

2. The method for determining the pre-mining water hazard prevention and control range of a coal mine working face according to claim 1, characterized in that: Before obtaining the peripheral data of the coal mine working face and the calculation formula for the water hazard prevention range, it also includes: Acquire geological data and water level data of the coal mine working face; wherein the geological data includes fault information, lithology distribution information and fold information; Determine the probability of water disasters occurring in different areas based on the geological data and water level data; The area where the probability of water disaster occurrence is greater than a set threshold is determined as the target area.

3. The method for determining the pre-mining water hazard prevention and control range of a coal mine working face according to claim 2, characterized in that: Determining the probability of water disasters occurring in different areas according to the geological data and water level data includes: Determine the roof water hazard risk score, the bottom water hazard risk score, the old space water hazard risk score, and the structural water hazard risk score respectively according to the geological data and the water level data; The probability of water disasters in different areas is determined by comprehensively considering the roof water disaster risk score, the bottom plate water disaster risk score, the old space water disaster risk score and the structural water disaster risk score.

4. The method for determining the pre-mining water hazard prevention and control range of a coal mine working face according to claim 1, characterized in that: The calculation formula for the water hazard prevention range is: Among them, L is the water hazard prevention range outside the mining face; K is the safety factor; M is the thickness of the coal seam to be mined; p is the peripheral water pressure of the target area; K P is the tensile strength of coal.

5. The method for determining the pre-mining water hazard prevention and control range of a coal mine working face according to claim 4, characterized in that: The safety factor has a value range of 2 to 5.

6. The method for determining the pre-mining water hazard prevention and control range of a coal mine working face according to claim 4, characterized in that: Before the peripheral data is input into the water hazard prevention range calculation formula, the method further includes: Obtain hydrogeological conditions, physical properties of coal seams, and historical water events; The safety factor is determined based on the hydrogeological conditions, the physical properties of the coal seam and the historical water disaster events.

7. The method for determining the pre-mining water hazard prevention and control range of a coal mine working face according to claim 6, characterized in that: Determining the safety factor according to the hydrogeological conditions, the physical properties of the coal seam and the historical water disaster events includes: The safety factors for different areas and time periods are determined based on the hydrogeological conditions, the physical properties of the coal seams and the historical water disaster events.

8. A device for determining the scope of water hazard prevention and control before mining in a coal mining working face, characterized in that: include: The acquisition module is used to obtain the peripheral data of the coal mine working face and the calculation formula of the water hazard prevention range; wherein the peripheral data includes the thickness of the coal seam to be mined, the peripheral water pressure of the target area, the tensile strength of the coal, An input module, used for inputting the peripheral data into the water hazard prevention range calculation formula; The determination module is used to determine the water hazard prevention and control scope outside the coal mine working face according to the calculation results of the water hazard prevention and control scope.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method as claimed in any one of claims 1 to 7 are implemented.

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