Close-range coal seam upper mining and lower tunneling method and device, electronic equipment and storage medium
By acquiring coal seam working face data and using numerical simulation to calculate the shortest critical stopping distance, the problem of overlying strata damage in close-range coal seam mining was solved, and the stability and safety of the surrounding rock of the tunnel was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CCTEG COAL MINING RES INST
- Filing Date
- 2023-10-10
- Publication Date
- 2026-05-29
AI Technical Summary
In close-range coal seam mining, upward mining disrupts the original stress balance of the overlying strata, leading to overlying strata damage. Furthermore, existing technologies cannot effectively address issues such as resource depletion, rock bursts, and coal and gas outbursts in mines.
By acquiring working face data of the upper and lower coal seams, the shortest critical stopping distance is calculated using numerical simulation. When this distance is reached, the mining operation of the upper coal seam is stopped until the lower coal seam tunneling face is level with the upper coal seam working face, and then the mining operation of the upper coal seam is restarted.
The calculated shortest critical stopping distance is more accurate and suitable for the current target coal seam, which helps to ensure the stability and safety of the surrounding rock in the tunneling roadway.
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Figure CN117418838B_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of underground mining technology, and in particular to a method, apparatus, electronic equipment, and storage medium for mining and excavating coal seams at close range. Background Technology
[0002] In close-proximity coal seam mining, significant interactions often occur between the seams, especially with upward mining, which disrupts the original stress balance of the overlying strata. The redistributed stress can easily exceed the ultimate strength of the coal seam, leading to the failure of the overlying strata. However, with the increasing prevalence of resource depletion, rock bursts, and coal and gas outbursts in some mines, many mining areas are demanding upward mining or coordinated mining with alternating top and bottom layers. Because the underground conditions of different coal seams vary, previous experience with upward mining and downward excavation cannot be directly applied. Summary of the Invention
[0003] This disclosure aims to at least partially address one of the technical problems in the related art.
[0004] Therefore, one objective of this disclosure is to propose a method for mining and excavating coal seams at close range.
[0005] The second objective of this disclosure is to provide a short-distance coal seam mining and tunneling device.
[0006] The third objective of this disclosure is to propose an electronic device.
[0007] The fourth objective of this disclosure is to provide a non-transitory computer-readable storage medium.
[0008] The fifth objective of this disclosure is to provide a computer program product.
[0009] To achieve the above objectives, the first aspect of this disclosure proposes a method for mining and tunneling coal seams in close proximity, comprising: acquiring first working face data of the upper coal seam working face of the target close-proximity coal seam, and second working face data of the lower coal seam tunneling working face of the target close-proximity coal seam, and acquiring coal seam data of the target close-proximity coal seam; calculating the shortest critical stopping distance for mining and stopping coal seams in close proximity based on the first working face data, the second working face data, and the coal seam data using a numerical simulation method; stopping coal mining operations in the upper coal seam working face when the horizontal distance between the working faces of the lower coal seam tunneling working face and the working face of the upper coal seam working face is less than the shortest critical stopping distance, until the tunneling working face of the lower coal seam tunneling working face is horizontally aligned with the stopping working face of the upper coal seam working face, and restarting coal mining operations in the upper coal seam working face.
[0010] According to one embodiment of this disclosure, the step of calculating the shortest critical stopping distance for upper and lower coal seam mining based on the first working face data, the second working face data, and the coal seam data using a numerical simulation method includes: acquiring the position data of the upper coal seam working face and the height of the first working face in the first working face data, and acquiring the position data of the lower coal seam tunneling working face and the height of the second working face in the second working face data; and calculating the shortest critical stopping distance based on the position data of the upper coal seam working face, the height of the first working face, the position data of the lower coal seam tunneling working face, the height of the second working face, and the coal seam data using the numerical simulation method.
[0011] According to one embodiment of this disclosure, the step of calculating the shortest critical stopping distance using the numerical simulation method based on the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data includes: establishing a data simulation model of the target nearby coal seam based on the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data using the numerical simulation method; obtaining the advance mining stress of the upper coal seam working face on the lower coal seam tunneling face during the tunneling operation based on the data simulation model; and determining the shortest critical stopping distance based on the advance mining stress.
[0012] According to one embodiment of this disclosure, determining the shortest critical stopping distance based on the advanced mining stress includes: calculating the stress bearing peak of the lower coal seam tunneling face based on the coal seam data, the location data of the lower coal seam tunneling face, and the height of the second working face; taking the location point of the advanced mining stress and the stress bearing peak as the target location point, and taking the horizontal distance between the target location point and the upper coal seam working face as the shortest critical stopping distance.
[0013] To achieve the above objectives, a second aspect of this disclosure provides a near-distance coal seam mining and tunneling device, comprising: an acquisition module, configured to acquire first working face data of the upper coal seam working face of the target near-distance coal seam, and second working face data of the lower coal seam tunneling working face of the target near-distance coal seam, and acquire coal seam data of the target near-distance coal seam; a calculation module, configured to calculate the shortest critical stopping distance for mining and stopping above and below based on the first working face data, the second working face data, and the coal seam data, using a numerical simulation method; and a control module, configured to stop mining operations on the upper coal seam working face when the horizontal distance between the working faces of the lower coal seam tunneling working face and the upper coal seam working face is less than the shortest critical stopping distance, until the tunneling working face of the lower coal seam tunneling working face is horizontally aligned with the stopping working face of the upper coal seam working face, and then restart mining operations on the upper coal seam working face.
[0014] According to one embodiment of this disclosure, the calculation module is further configured to: acquire the position data of the upper coal seam working face and the height of the first working face in the first working face data, and acquire the position data of the lower coal seam tunneling working face and the height of the second working face in the second working face data; and calculate the shortest critical stopping distance by means of the numerical simulation method based on the position data of the upper coal seam working face, the height of the first working face, the position data of the lower coal seam tunneling working face, the height of the second working face and the coal seam data.
[0015] According to one embodiment of this disclosure, the calculation module is further configured to: establish a data simulation model of the target near-distance coal seam based on the numerical simulation method using the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data; obtain the advance mining stress of the upper coal seam working face on the lower coal seam tunneling face during the tunneling operation based on the data simulation model; and determine the shortest critical stopping distance based on the advance mining stress.
[0016] According to one embodiment of this disclosure, the calculation module is further configured to: calculate the peak stress bearing capacity of the lower coal seam tunneling face based on the coal seam data, the location data of the lower coal seam tunneling face, and the height of the second working face; take the location point of the pre-mining stress and the peak stress bearing capacity as the target location point, and take the horizontal distance between the target location point and the upper coal seam working face as the shortest critical stopping distance.
[0017] To achieve the above objectives, a third aspect of this disclosure provides an electronic device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor to implement the near-distance coal seam mining and tunneling method as described in the first aspect of this disclosure.
[0018] To achieve the above objectives, a fourth aspect of this disclosure provides a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to implement the close-range coal seam mining and tunneling method as described in the first aspect of this disclosure.
[0019] To achieve the above objectives, a fifth aspect of this disclosure provides a computer program product, including a computer program that, when executed by a processor, is used to implement the close-range coal seam mining and tunneling method as described in the first aspect of this disclosure.
[0020] By collecting working face data from the upper coal seam working face and the lower coal seam tunneling working face, and calculating the shortest critical stopping distance using numerical simulation, the shortest critical stopping distance calculated in this disclosure is more accurate and more suitable for the current target coal seam, compared to the shortest critical stopping distance calculated using empirical values in the current technology. This is beneficial to ensuring the stability and safety of the surrounding rock of the tunneling roadway. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of a method for mining and tunneling coal seams at close range according to one embodiment of this disclosure;
[0022] Figure 2 This is a schematic diagram of a close-range coal seam according to one embodiment of the present disclosure;
[0023] Figure 3 This is a schematic diagram of another close-range coal seam mining and tunneling method according to one embodiment of this disclosure;
[0024] Figure 4 This is a schematic diagram of a close-range coal seam mining and tunneling device according to one embodiment of the present disclosure;
[0025] Figure 5 This is a schematic diagram of an electronic device according to one embodiment of the present disclosure. Detailed Implementation
[0026] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.
[0027] The acquisition, storage, use, and processing of data in this disclosed technical solution all comply with the relevant provisions of national laws and regulations.
[0028] Figure 1 This is a schematic diagram of a method for mining and tunneling coal seams at close range according to one embodiment of this disclosure, as shown below. Figure 1 As shown, this close-range coal seam mining and tunneling method includes the following steps:
[0029] S101, acquire the first working face data of the upper coal seam working face of the target near-distance coal seam, and the second working face data of the lower coal seam tunneling working face of the target near-distance coal seam, and acquire the coal seam data of the target near-distance coal seam.
[0030] The target proximity coal seam refers to the coal seam that requires both upper and lower mining operations. This target proximity coal seam can be of various types, and no specific limitation is made here. It is understandable that within the same mining area, the structure of the target proximity coal seam can differ at different locations.
[0031] In this embodiment of the disclosure, the upper coal seam working face is the working face where longwall mining is underway, and the lower coal seam tunneling face is the working face where tunneling is underway. In one possible coal seam distribution, the coal seam distribution close to the target can be as follows: Figure 2 As shown. It should be noted that the data for the first and second working faces may include a variety of information, without any limitations here. For example, the data for the first working face may include the coal seam density, coal seam thickness, and surrounding rock structure at the cessation of mining in the upper coal seam working face, while the data for the second working face may include the coal seam density, coal seam thickness, surrounding rock structure at the cessation of mining in the upper coal seam working face, and the distribution of hydraulic supports, etc.
[0032] The close-range coal seam mining and tunneling method of this application embodiment can be applied to underground mining and tunneling control scenarios. The execution subject of the close-range coal seam mining and tunneling method of this application embodiment can be the close-range coal seam mining and tunneling device of this application embodiment, which can be installed on an electronic device.
[0033] S102, based on the data of the first working face, the data of the second working face, and the coal seam data, calculates the shortest critical stopping distance for stopping mining at both ends using numerical simulation.
[0034] It should be noted that the shortest critical stopping distance is the critical distance at which the pre-stress of the upper coal seam working face is transferred to the lower coal seam tunneling face and affects it. It should also be noted that the shortest critical stopping distance may vary depending on the conditions and types of closely spaced coal seams; therefore, a unified standard cannot be established.
[0035] In this embodiment of the disclosure, the shortest critical stopping distance for both upper and lower mining operations is calculated using numerical simulation. Numerical simulation, also known as computer simulation, relies on electronic computers and combines the concepts of finite element method or finite volume method to achieve the purpose of studying engineering problems, physical problems, and even various problems in nature through numerical calculation and image display.
[0036] In this disclosure, the shortest critical stopping distance is determined by analyzing the target coal seam in close proximity through numerical simulation. This allows for the formulation of corresponding shortest critical stopping distances for coal seams in close proximity under different working conditions.
[0037] S103: When the horizontal distance between the working faces of the lower coal seam tunneling face and the upper coal seam working face is less than the shortest critical stopping distance, the mining operation of the upper coal seam working face shall be stopped until the tunneling working face of the lower coal seam tunneling face is level with the stopping working face of the upper coal seam working face, and then the mining operation of the upper coal seam working face shall be restarted.
[0038] It should be noted that after the coal mining operation in the upper coal seam working face stops, the upper coal seam working face will no longer generate advanced mining stress on the lower coal seam tunneling working face. The lower coal seam tunneling working face will still be in the original rock stress environment, which is beneficial to ensuring the stability and safety maintenance of the surrounding rock of the tunneling roadway.
[0039] In this embodiment, firstly, data of the first working face of the upper coal seam working face of the target near-distance coal seam and data of the second working face of the lower coal seam tunneling working face of the target near-distance coal seam are acquired, and coal seam data of the target near-distance coal seam are acquired. Then, based on the first working face data, the second working face data, and the coal seam data, the shortest critical stopping distance between the upper and lower working faces is calculated using numerical simulation. Finally, when the horizontal distance between the working faces of the lower coal seam tunneling working face and the upper coal seam working face is less than the shortest critical stopping distance, the coal mining operation of the upper coal seam working face is stopped until the tunneling working face of the lower coal seam tunneling working face is level with the stopping working face of the upper coal seam working face, and then the coal mining operation of the upper coal seam working face is restarted. Therefore, by collecting working face data of the upper coal seam working face and the lower coal seam tunneling working face, and calculating the shortest critical stopping distance through numerical simulation, the shortest critical stopping distance calculated in this disclosure is more accurate and more suitable for the current target coal seam, which is beneficial to ensuring the stability and safety of the surrounding rock of the tunneling roadway.
[0040] In the above embodiments, based on the data of the first working face, the data of the second working face, and the coal seam data, the shortest critical stopping distance for stopping mining at both ends is calculated using numerical simulation. Furthermore, it can be achieved through... Figure 3 To further explain, the method includes:
[0041] S301, acquire the location data of the upper coal seam working face and the height of the first working face from the first working face data, and acquire the location data of the lower coal seam tunneling working face and the height of the second working face from the second working face data.
[0042] S302, based on the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data, calculates the shortest critical stopping distance through numerical simulation.
[0043] In this embodiment of the disclosure, based on the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data, the shortest critical stopping distance is calculated by numerical simulation. First, a data simulation model of the target nearby coal seam is established based on the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data. Then, based on the data simulation model, the advance mining stress of the upper coal seam working face on the lower coal seam tunneling face during the tunneling operation is obtained. Finally, the shortest critical stopping distance is determined based on the advance mining stress.
[0044] It should be noted that, in determining the shortest critical stopping distance based on the pre-mining stress, the peak stress bearing capacity of the lower coal seam tunneling face can be calculated first based on the coal seam data, the location data of the lower coal seam tunneling face, and the height of the second working face. Then, the location points of the pre-mining stress and the peak stress bearing capacity are used as the target location points, and the horizontal distance between the target location point and the upper coal seam working face is used as the shortest critical stopping distance.
[0045] It should be noted that there are various methods for calculating the peak stress of the lower coal seam tunneling face, and no limitation is made here. For example, the peak stress of the lower coal seam tunneling face can be calculated using a preset algorithm, or it can be calculated using a pre-trained model.
[0046] In this embodiment, the location data and height of the upper coal seam working face from the first working face data are first acquired, and the location data and height of the lower coal seam tunneling working face from the second working face data are also acquired. Then, based on the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling working face, the height of the second working face, and the coal seam data, the shortest critical stopping distance is calculated using numerical simulation. Thus, by establishing a data simulation model using numerical simulation, the shortest critical stopping distance adapted to the target coal seam can be accurately simulated, providing a data foundation for subsequent upper and lower mining control.
[0047] It should be noted that after obtaining the data of the first working face of the upper coal seam and the data of the second working face of the lower coal seam of the target coal seam, the data of the first and second working faces can be preprocessed to facilitate subsequent calculations and processing using numerical simulation methods. Various preprocessing methods can be used, and no specific method is specified here. For example, it can include one or more of the following: data filtering, completion, and normalization.
[0048] Corresponding to the near-distance coal seam mining and tunneling methods provided in the above embodiments, one embodiment of this disclosure also provides a near-distance coal seam mining and tunneling device. Since the near-distance coal seam mining and tunneling device provided in this embodiment corresponds to the near-distance coal seam mining and tunneling methods provided in the above embodiments, the implementation methods of the above-mentioned near-distance coal seam mining and tunneling methods are also applicable to the near-distance coal seam mining and tunneling device provided in this embodiment, and will not be described in detail in the following embodiments.
[0049] Figure 4 This is a schematic diagram of a close-range coal seam mining and tunneling device according to one embodiment of the present disclosure, as shown below. Figure 4 As shown, the close-range coal seam mining and tunneling device 400 includes: an acquisition module 410, a calculation module 420, and a control module 430.
[0050] The acquisition module 410 is used to acquire the first working face data of the upper coal seam working face of the target near-distance coal seam, and the second working face data of the lower coal seam tunneling working face of the target near-distance coal seam, and to acquire the coal seam data of the target near-distance coal seam.
[0051] The calculation module 420 is used to calculate the shortest critical stopping distance for mining by numerical simulation based on the data of the first working face, the data of the second working face, and the coal seam data.
[0052] The control module 430 is used to stop the mining operation of the upper coal seam when the horizontal distance between the working faces of the lower coal seam tunneling face and the upper coal seam working face is less than the shortest critical stopping distance, until the tunneling working face of the lower coal seam tunneling face is level with the stopping working face of the upper coal seam working face, and then restart the mining operation of the upper coal seam working face.
[0053] In one embodiment of this disclosure, the calculation module 420 is further configured to: acquire the position data of the upper coal seam working face and the height of the first working face in the first working face data, and acquire the position data of the lower coal seam tunneling working face and the height of the second working face in the second working face data; and calculate the shortest critical stopping distance by numerical simulation based on the position data of the upper coal seam working face, the height of the first working face, the position data of the lower coal seam tunneling working face, the height of the second working face and the coal seam data.
[0054] In one embodiment of this disclosure, the calculation module 420 is further configured to: establish a data simulation model of the target near-distance coal seam based on the position data of the upper coal seam working face, the height of the first working face, the position data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data using numerical simulation; obtain the advance mining stress of the upper coal seam working face on the lower coal seam tunneling face during the tunneling operation based on the data simulation model; and determine the shortest critical stopping distance based on the advance mining stress.
[0055] In one embodiment of this disclosure, the calculation module 420 is further configured to: calculate the peak stress bearing capacity of the lower coal seam tunneling face based on coal seam data, location data of the lower coal seam tunneling face, and height of the second working face; take the location points of the advance mining stress and the peak stress bearing capacity as target location points, and take the horizontal distance between the target location point and the upper coal seam working face as the shortest critical stopping distance.
[0056] Therefore, by collecting working face data of the upper coal seam working face and the lower coal seam tunneling working face, and calculating the shortest critical stopping distance through numerical simulation, the shortest critical stopping distance calculated in this disclosure is more accurate and more suitable for the current target coal seam, which is beneficial to ensuring the stability and safety of the surrounding rock of the tunneling roadway.
[0057] To implement the above embodiments, this disclosure also proposes an electronic device 500. Figure 5 This is a schematic diagram of an electronic device according to one embodiment of the present disclosure, such as... Figure 5 As shown, the electronic device 500 includes: a processor 501 and a memory 502 communicatively connected to the processor. The memory 502 stores instructions executable by at least one processor. The instructions are executed by at least one processor 501 to achieve the functions described in this disclosure. Figures 1-3 The embodiment describes a method for mining and tunneling coal seams at close range.
[0058] To implement the above embodiments, this disclosure also proposes a non-transitory computer-readable storage medium storing computer instructions, wherein the computer instructions are used to cause a computer to implement the present disclosure. Figures 1-3 The embodiment describes a method for mining and tunneling coal seams at close range.
[0059] To implement the above embodiments, this disclosure also proposes a computer program product, including a computer program, which, when executed by a processor, implements the features of this disclosure. Figures 1-3 The embodiment describes a method for mining and tunneling coal seams at close range.
[0060] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise expressly specified.
[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0063] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.
Claims
1. A method for mining and excavating coal seams at close range, characterized in that, include: Acquire the first working face data of the upper coal seam working face of the target near coal seam, and the second working face data of the lower coal seam tunneling working face of the target near coal seam, and acquire the coal seam data of the target near coal seam; Based on the data from the first working face, the data from the second working face, and the coal seam data, the shortest critical stopping distance for stopping mining at the top and stopping mining at the bottom is calculated by numerical simulation. The calculation of the shortest critical stopping distance for upper and lower mining based on the first working face data, the second working face data, and the coal seam data using numerical simulation includes: Obtain the location data and height of the upper coal seam working face from the first working face data, and obtain the location data and height of the lower coal seam tunneling working face from the second working face data; Based on the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data, the shortest critical stopping distance is calculated using the numerical simulation method. The calculation of the shortest critical stopping distance using the numerical simulation method, based on the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data, includes: Based on the numerical simulation method, a data simulation model of the target near-distance coal seam is established using the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data. Based on the data simulation model, the pre-mining stress of the upper coal seam working face on the lower coal seam working face during the tunneling operation is obtained. The shortest critical stopping distance is determined based on the aforementioned advanced mining stress. The determination of the shortest critical stopping distance based on the advanced mining stress includes: Based on the coal seam data, the location data of the lower coal seam tunneling face, and the height of the second working face, the peak stress bearing capacity of the lower coal seam tunneling face is calculated. The location of the pre-mining stress and the peak stress bearing point is taken as the target location point, and the horizontal distance between the target location point and the upper coal seam working face is taken as the shortest critical stopping distance; When the horizontal distance between the working face of the lower coal seam tunneling face and the working face of the upper coal seam is less than the shortest critical stopping distance, the mining operation of the upper coal seam working face shall be stopped until the tunneling working face of the lower coal seam tunneling face is level with the stopping working face of the upper coal seam working face, and then the mining operation of the upper coal seam working face shall be restarted.
2. A close-range coal seam mining and tunneling device, employing the method as described in claim 1, characterized in that, include: The acquisition module is used to acquire the first working face data of the upper coal seam working face of the target near coal seam, and the second working face data of the lower coal seam tunneling working face of the target near coal seam, and to acquire the coal seam data of the target near coal seam. The calculation module is used to calculate the shortest critical stopping distance for upper and lower stopping of mining based on the data of the first working face, the data of the second working face, and the data of the coal seam, using a numerical simulation method. The calculation of the shortest critical stopping distance for upper and lower mining based on the first working face data, the second working face data, and the coal seam data using numerical simulation includes: Obtain the location data and height of the upper coal seam working face from the first working face data, and obtain the location data and height of the lower coal seam tunneling working face from the second working face data; Based on the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data, the shortest critical stopping distance is calculated using the numerical simulation method. The calculation of the shortest critical stopping distance using the numerical simulation method, based on the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data, includes: Based on the numerical simulation method, a data simulation model of the target near-distance coal seam is established using the location data of the upper coal seam working face, the height of the first working face, the location data of the lower coal seam tunneling face, the height of the second working face, and the coal seam data. Based on the data simulation model, the pre-mining stress of the upper coal seam working face on the lower coal seam working face during the tunneling operation is obtained. The shortest critical stopping distance is determined based on the aforementioned advanced mining stress. The determination of the shortest critical stopping distance based on the advanced mining stress includes: Based on the coal seam data, the location data of the lower coal seam tunneling face, and the height of the second working face, the peak stress bearing capacity of the lower coal seam tunneling face is calculated. The location of the pre-mining stress and the peak stress bearing point is taken as the target location point, and the horizontal distance between the target location point and the upper coal seam working face is taken as the shortest critical stopping distance; The control module is used to stop the mining operation of the upper coal seam when the horizontal distance between the working face of the lower coal seam tunneling face and the working face of the upper coal seam is less than the shortest critical stopping distance, until the tunneling working face of the lower coal seam tunneling face is level with the stopping working face of the upper coal seam, and then restart the mining operation of the upper coal seam.
3. An electronic device, characterized in that, Including memory and processor; The processor reads executable program code stored in the memory to run a program corresponding to the executable program code, so as to implement the method as described in claim 1.
4. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in claim 1.