Method for arranging micro-seismic detectors in coal mine tunneling roadway

Abstract

The invention provides a coal mine tunneling roadway micro-seismic detector arrangement method, and relates to the technical field of coal mine micro-seismic monitoring, and the method comprises the steps: constructing an advanced horizontal high-position drill hole and an advanced horizontal low-position drill hole with different depths and different directions in a top plate in front of a tunneling head corresponding to a coal mine tunneling roadway, an advanced horizontal deep-position drill hole and an advanced horizontal shallow-position drill hole which are different in depth and direction are constructed in a front bottom plate, and a detector which can flow along with tunneling of a working face is mounted on a top plate anchor rod behind a tunneling head; and on the basis of detectors installed in the advanced horizontal high-position drill hole, the advanced horizontal low-position drill hole, the advanced horizontal deep-position drill hole and the advanced horizontal shallow-position drill hole, and a flowable detector, a micro-seismic platform net of the heading head area is constructed. Therefore, all-dimensional three-dimensional monitoring of the microseismic detector is realized in the heading head area, the microseismic platform net arrangement quality of the heading head area is improved, and the microseismic positioning precision and monitoring quality of the heading head area are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of microseismic monitoring in coal mines, and in particular to a method, device, electronic equipment and storage meson for microseismic geophones in coal mine tunneling tunnels. Background Art

[0002] As a real-time, dynamic, three-dimensional geophysical monitoring technology, microseismic monitoring technology can evaluate the structure and stability of rock mass by analyzing microseismic events caused by rock mass deformation and destruction in coal mines. This is of great significance for preventing dynamic disasters such as mine rock burst, mine earthquake rock burst, and water inrush. The layout quality of the microseismic network has a great influence on the accuracy of earthquake source location. Reasonable microseismic geophone layout can effectively improve the quality of microseismic monitoring.

[0003] In the related technologies, due to the limited space in coal mines, the quality of microseismic network layout often faces huge difficulties, especially in the tunneling roadway, where there is solid coal in front and it is impossible to enter. Therefore, the detectors can only be installed in the roadway behind the tunneling head corresponding to the coal mine tunneling roadway. This results in the detectors being arranged in a straight line and unable to cover the tunneling head, thereby failing to achieve effective monitoring of the tunneling head area. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, one purpose of the present invention is to propose a method for arranging microseismic geophones in coal mine tunneling tunnels, to achieve all-round three-dimensional monitoring of microseismic geophones in the tunneling head area, to improve the quality of microseismic network arrangement in the tunneling head area, as well as the microseismic positioning accuracy and monitoring quality in the tunneling head area.

[0006] To achieve the above-mentioned purpose, an embodiment of the present invention proposes a method for arranging microseismic geophones in a coal mine tunnel, the method comprising:

[0007] The coal mine tunneling roadway corresponds to the tunneling head at the front roof construction with two advanced horizontal high-position drill holes and advanced horizontal low-position drill holes of different depths and directions, the front bottom plate construction has two advanced horizontal deep-position drill holes and advanced horizontal shallow-position drill holes of different depths and directions, and the roof anchor rod behind the tunneling head is installed with a detector that can flow with the working face during tunneling;

[0008] Based on the detectors installed in the advanced horizontal high-position borehole, the advanced horizontal low-position borehole, the advanced horizontal deep-position borehole, and the advanced horizontal shallow-position borehole, as well as the movable detectors installed on the roof anchor rods, a microseismic network corresponding to the heading area of ​​the coal mine excavation tunnel is constructed.

[0009] In one embodiment of the present invention, when the tunneling head reaches the last end detector in the advanced horizontal high-position borehole, the advanced horizontal low-position borehole, the advanced horizontal deep-position borehole, and the advanced horizontal shallow-position borehole, the next group of boreholes and detectors are deployed to construct a real-time microseismic network corresponding to the tunneling head area of ​​the coal mine excavation tunnel.

[0010] In one embodiment of the present invention, the horizontal section lengths of the advanced horizontal high-level borehole and the advanced horizontal low-level borehole are the same and are both the first length threshold, the detector spacing in the advanced horizontal high-level borehole and the advanced horizontal low-level borehole is the same and is both the second length threshold, detectors of a first number threshold are installed in the advanced horizontal high-level borehole, and detectors of a second number threshold are installed in the advanced horizontal low-level borehole, wherein the first length threshold is greater than the second length threshold, and the first number threshold and the second number threshold are determined by the first length threshold.

[0011] In one embodiment of the present invention, during the construction of the advanced horizontal high-position drilling hole and the advanced horizontal low-position drilling hole, the drill bit is first inclined, and then switched to horizontal drilling after reaching a predetermined height to obtain the advanced horizontal high-position drilling hole and the advanced horizontal low-position drilling hole, and the detectors are sent to the predetermined positions of the advanced horizontal high-position drilling hole and the advanced horizontal low-position drilling hole. After all the detectors are installed, the advanced horizontal high-position drilling hole and the advanced horizontal low-position drilling hole are grouted.

[0012] In one embodiment of the present invention, the inclination direction of the advanced horizontal high-position drilling is 30° north-west, and the vertical distance between the horizontal section and the coal seam is 100m. The inclination direction of the advanced horizontal low-position drilling is 30° east-northeast, and the vertical distance between the horizontal section and the coal seam is 50m.

[0013] In one embodiment of the present invention, the horizontal section lengths of the advanced horizontal deep drilling hole and the advanced horizontal shallow drilling hole are the same and are both the first length threshold, the detector spacings in the advanced horizontal deep drilling hole and the advanced horizontal shallow drilling hole are the same and are both the second length threshold, the second number threshold of detectors are installed in the advanced horizontal deep drilling hole, and the first number threshold of detectors are installed in the advanced horizontal shallow drilling hole.

[0014] In one embodiment of the present invention, during the construction of the advanced horizontal deep drilling hole and the advanced horizontal shallow drilling hole, the drill bit is first inclined, and then switched to horizontal drilling after reaching a predetermined depth to obtain the advanced horizontal deep drilling hole and the advanced horizontal shallow drilling hole, and the detectors are sent to the predetermined positions of the advanced horizontal deep drilling hole and the advanced horizontal shallow drilling hole. After all the detectors are installed, the advanced horizontal deep drilling hole and the advanced horizontal shallow drilling hole are grouted.

[0015] In one embodiment of the present invention, the inclination direction of the advanced horizontal deep drilling is 30° south-east, and the vertical distance between the horizontal section and the coal seam is 100m. The inclination direction of the advanced horizontal shallow drilling is 30° west-south, and the vertical distance between the horizontal section and the coal seam is 50m.

[0016] In one embodiment of the present invention, the predetermined position of the detector in the advanced horizontal high-position drilling, advanced horizontal low-position drilling, advanced horizontal deep-position drilling, and advanced horizontal shallow-position drilling is calculated by the crawling distance of the crawling robot or the advancement distance of the drill bit corresponding to the drill rig pushing the drill rod.

[0017] In one embodiment of the present invention, the detectors installed on the roof anchors behind the tunneling head and which can flow as the working face advances have a spacing equal to the second length threshold.

[0018] In the method for arranging microseismic geophones in a coal mine excavation tunnel of an embodiment of the present invention, the coal mine excavation tunnel has two advanced horizontal high-position boreholes and advanced horizontal low-position boreholes of different depths and directions on the front roof corresponding to the excavation head, and two advanced horizontal deep-position boreholes and advanced horizontal shallow-position boreholes of different depths and directions on the front floor, and a geophone that can flow with the excavation of the working face is installed on the anchor rod of the roof behind the excavation head; based on the geophones installed in the advanced horizontal high-position boreholes, advanced horizontal low-position boreholes, advanced horizontal deep-position boreholes, advanced horizontal shallow-position boreholes, and the movable geophones, a microseismic network in the excavation head area is constructed. Thus, all-round three-dimensional monitoring of microseismic geophones is realized in the excavation head area, and the quality of microseismic network arrangement in the excavation head area, as well as the microseismic positioning accuracy and monitoring quality in the excavation head area are improved.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 A schematic diagram of a flow chart of a method for arranging microseismic geophones in a coal mine tunnel provided by an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a drilling deflection direction provided by an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of a first group of drilling construction corresponding to a tunneling head area of ​​a coal mine tunneling tunnel provided by an embodiment of the present invention;

[0024] Figure 4A schematic diagram of the second group of drilling construction corresponding to the tunneling head area of ​​a coal mine tunneling tunnel provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] It should be noted that the acquisition, storage, use, and processing of data in the technical solution of this application comply with the relevant provisions of relevant laws and regulations.

[0027] The following describes a method and device for arranging microseismic geophones in a coal mine tunnel according to an embodiment of the present invention with reference to the accompanying drawings.

[0028] Figure 1 A schematic flow chart of a method for arranging microseismic geophones in a coal mine tunnel provided by an embodiment of the present invention.

[0029] like Figure 1 As shown, the method comprises the following steps:

[0030] Step 101, the coal mine excavation tunnel has two advanced horizontal high-position drill holes and an advanced horizontal low-position drill hole at different depths and directions on the front roof corresponding to the tunneling head, and two advanced horizontal deep-position drill holes and an advanced horizontal shallow-position drill hole at different depths and directions on the front bottom plate, and a detector that can flow with the working face during excavation is installed on the roof anchor rod behind the tunneling head.

[0031] In some embodiments, the horizontal section lengths of the advanced horizontal high-level borehole and the advanced horizontal low-level borehole are the same and are both the first length threshold, the detector spacing in the advanced horizontal high-level borehole and the advanced horizontal low-level borehole is the same and is both the second length threshold, a first number threshold of detectors are installed in the advanced horizontal high-level borehole, and a second number threshold of detectors are installed in the advanced horizontal low-level borehole, wherein the first length threshold is greater than the second length threshold, and the first number threshold and the second number threshold are determined by the first length threshold.

[0032] Optionally, the first length threshold may be 600 m, the second length threshold may be 200 m, the first quantity threshold may be 4, and the second quantity threshold may be 3, but the present invention is not limited thereto and this embodiment does not make any specific limitation thereto.

[0033] Furthermore, during the construction of the advanced horizontal high-position drilling and the advanced horizontal low-position drilling, the drill bit is first used to create an inclination, and then the drilling is switched to horizontal drilling after reaching a predetermined height, so as to obtain the advanced horizontal high-position drilling and the advanced horizontal low-position drilling, and the detector is sent to the predetermined position of the advanced horizontal high-position drilling and the advanced horizontal low-position drilling. After all the detectors are installed, the advanced horizontal high-position drilling and the advanced horizontal low-position drilling are grouting. For example, the universal drill bit can be used to create an inclination first, and then the drilling is switched to horizontal drilling after reaching a predetermined height. After the drilling construction is completed, the crawling robot or the drill rig pushes the drill rod to send the detector to the predetermined position. After all the detectors are installed, the advanced horizontal high-position drilling and the advanced horizontal low-position drilling are grouting cement.

[0034] Specifically, Figure 2 As shown, the planing surface (AA) of the roadway corresponds to the solid coal , ) as an example, the inclination direction of the advance horizontal high-position drilling hole (high-position hole) is 30° north-west, and the vertical distance between the horizontal section and the coal seam is 100m. The inclination direction of the advance horizontal low-position drilling hole (low-position hole) is 30° east-northeast, and the vertical distance between the horizontal section and the coal seam is 50m.

[0035] Therefore, if Figure 3 As shown in the figure, in the coal mine tunnel, the corresponding heading direction of the tunneling head is based on the planing surface of the solid coal (AA , ) as an example, firstly, two advanced horizontal high-position boreholes (high-position boreholes) and advanced horizontal low-position boreholes (low-position boreholes) with different depths and directions were constructed in the roof in front of the tunneling head. The horizontal section length of the borehole is 600m, and the distance between the detectors in the hole is 200m. Four detectors are installed in the advanced horizontal high-position borehole (fixed detectors in the hole), and three detectors are installed in the advanced horizontal low-position borehole (fixed detectors in the hole). The inclination direction of the advanced horizontal high-position borehole is 30° north by west, and the vertical distance between the horizontal section and the coal seam is 100m; the inclination direction of the advanced horizontal low-position borehole is 30° east by north, and the vertical distance between the horizontal section and the coal seam is 50m. The deployment of the detectors on the roof in front of the tunneling head is realized.

[0036] In some embodiments, the horizontal section lengths of the advanced horizontal deep drilling hole and the advanced horizontal shallow drilling hole are the same and are both the first length threshold, the detector spacing in the advanced horizontal deep drilling hole and the advanced horizontal shallow drilling hole is the same and is both the second length threshold, detectors with a second number threshold are installed in the advanced horizontal deep drilling hole, and detectors with a first number threshold are installed in the advanced horizontal shallow drilling hole.

[0037] Furthermore, during the construction of the advanced horizontal deep drilling and the advanced horizontal shallow drilling, the drill bit is first used to create an inclination, and after reaching a predetermined depth, it is converted to horizontal drilling to obtain the advanced horizontal deep drilling and the advanced horizontal shallow drilling, and the detector is sent to the predetermined position of the advanced horizontal deep drilling and the advanced horizontal shallow drilling. After all the detectors are installed, the advanced horizontal deep drilling and the advanced horizontal shallow drilling are grouting. For example, the universal drill bit can be used to create an inclination first, and then after reaching a predetermined height, it is converted to horizontal drilling. After the drilling construction is completed, a crawling robot or a drill rig push drill rod is used to send the detector to the predetermined position. After all the detectors are installed, the advanced horizontal deep drilling and the second advanced horizontal shallow drilling are grouting cement.

[0038] Specifically, Figure 2 As shown, the planing surface (AA) of the roadway corresponds to the solid coal , ) as an example, the inclination direction of the advanced horizontal deep drilling hole (deep hole) is 30°southeast, and the vertical distance between the horizontal section and the coal seam is 100m. The inclination direction of the advanced horizontal shallow drilling hole (shallow hole) is 30°westsouthwest, and the vertical distance between the horizontal section and the coal seam is 50m.

[0039] Therefore, if Figure 3 As shown in the figure, in the coal mine tunnel, the corresponding heading direction of the tunneling head is based on the planing surface of the solid coal (AA , ) as an example, two advanced horizontal deep boreholes (deep holes) and advanced horizontal shallow boreholes (shallow holes) of different depths and directions are constructed in the floor in front of the tunneling head. The horizontal section length of the borehole is 600m, and the distance between the detectors in the hole is about 200m. Among them, three detectors are installed in the advanced horizontal deep borehole (fixed detectors in the hole), and four detectors are installed in the advanced horizontal shallow borehole (fixed detectors in the hole). The inclination direction of the advanced horizontal deep borehole is 30°south-east, and the vertical distance between the horizontal section and the coal seam is 100m; the inclination direction of the advanced horizontal shallow borehole is 30°west-south, and the vertical distance between the horizontal section and the coal seam is 50m. The deployment of the floor detector in front of the tunneling head is realized.

[0040] In some embodiments, the detectors installed on the roof anchors behind the tunneling head and which can move along with the working face during tunneling are spaced at a second length threshold.

[0041] Therefore, if Figure 3 As shown, the detectors (tunnel flow detectors) that can flow as the working face advances are installed on the roof anchors behind the tunneling head, with a spacing of 200m.

[0042] It can be understood that the predetermined position of the detector in the advanced horizontal high-position drilling, advanced horizontal low-position drilling, advanced horizontal deep-position drilling and advanced horizontal shallow-position drilling is calculated by the crawling distance of the crawling robot or the advancement distance of the drill bit corresponding to the drill rig pushing the drill rod.

[0043] Step 102, based on the detectors installed in the advanced horizontal high-position borehole, the advanced horizontal low-position borehole, the advanced horizontal deep-position borehole, and the advanced horizontal shallow-position borehole, and the movable detectors installed on the roof anchor rods, a microseismic network corresponding to the heading area of ​​the coal mine excavation tunnel is constructed.

[0044] In some embodiments, when the tunneling head reaches the last end detector in the advance horizontal high-position drill hole, the advance horizontal low-position drill hole, the advance horizontal deep-position drill hole, and the advance horizontal shallow-position drill hole, the next set of drill holes and detectors are deployed to construct a real-time microseismic network corresponding to the tunneling head area of ​​the coal mine excavation tunnel.

[0045] Specifically, Figure 4 As shown in the figure, in the coal mine tunnel, corresponding to the tunneling direction of the tunneling head, taking the planing face of solid coal as an example, firstly, two advanced horizontal high-position boreholes (high-position holes) and advanced horizontal low-position boreholes (low-position holes) with different depths and directions are constructed in the roof in front of the tunneling head. The horizontal section length of the borehole is 600m, and the distance between the detectors in the hole is 200m. Among them, 4 detectors are installed in the advanced horizontal high-position borehole (fixed detectors in the hole), and 3 detectors are installed in the advanced horizontal low-position borehole (fixed detectors in the hole). And the detectors that can flow with the working face during excavation (tunnel mobile detectors) are installed on the roof anchor rods behind the tunneling head in the tunnel. Realize the deployment of the top plate detector in front of the tunneling head. When the tunneling head reaches the last end detector in the advanced horizontal high-position drill hole, advanced horizontal low-position drill hole, advanced horizontal deep-position drill hole and advanced horizontal shallow-position drill hole, construct the next group of similar drill holes and deploy the detectors in the same way, so as to form a three-dimensional full-surround monitoring of the tunneling head area.

[0046] In the method for arranging microseismic geophones in a coal mine excavation tunnel of an embodiment of the present invention, the coal mine excavation tunnel has two advanced horizontal high-position boreholes and advanced horizontal low-position boreholes of different depths and directions on the front roof corresponding to the excavation head, and two advanced horizontal deep-position boreholes and advanced horizontal shallow-position boreholes of different depths and directions on the front floor, and a geophone that can flow with the excavation of the working face is installed on the anchor rod of the roof behind the excavation head; based on the geophones installed in the advanced horizontal high-position boreholes, advanced horizontal low-position boreholes, advanced horizontal deep-position boreholes, advanced horizontal shallow-position boreholes, and the movable geophones, a microseismic network in the excavation head area is constructed. Thus, all-round three-dimensional monitoring of microseismic geophones is realized in the excavation head area, and the quality of microseismic network arrangement in the excavation head area, as well as the microseismic positioning accuracy and monitoring quality in the excavation head area are improved.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present invention belong.

[0050] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0051] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0052] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0053] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0054] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for arranging microseismic geophones in a coal mine tunnel, characterized in that: The method comprises: The coal mine tunneling roadway corresponds to the tunneling head at the front roof construction with two advanced horizontal high-position drill holes and advanced horizontal low-position drill holes of different depths and directions, the front bottom plate construction has two advanced horizontal deep-position drill holes and advanced horizontal shallow-position drill holes of different depths and directions, and the roof anchor rod behind the tunneling head is installed with a detector that can flow with the working face during tunneling; Based on the detectors installed in the advanced horizontal high-position borehole, the advanced horizontal low-position borehole, the advanced horizontal deep-position borehole, and the advanced horizontal shallow-position borehole, as well as the movable detectors installed on the roof anchor rods, a microseismic network corresponding to the heading area of ​​the coal mine excavation tunnel is constructed.

2. The method according to claim 1, characterized in that When the tunneling head reaches the last end detector in the advanced horizontal high-position borehole, the advanced horizontal low-position borehole, the advanced horizontal deep-position borehole, and the advanced horizontal shallow-position borehole, the next set of boreholes and detectors are deployed to construct a real-time microseismic network corresponding to the tunneling head area of ​​the coal mine excavation tunnel.

3. The method according to claim 1, characterized in that The horizontal section lengths of the advanced horizontal high-position borehole and the advanced horizontal low-position borehole are the same and are both the first length threshold, the detector spacings in the advanced horizontal high-position borehole and the advanced horizontal low-position borehole are the same and are both the second length threshold, detectors of a first number threshold are installed in the advanced horizontal high-position borehole, and detectors of a second number threshold are installed in the advanced horizontal low-position borehole, wherein the first length threshold is greater than the second length threshold, and the first number threshold and the second number threshold are determined by the first length threshold.

4. The method according to claim 3, characterized in that During the construction of the advanced horizontal high-position drilling hole and the advanced horizontal low-position drilling hole, the drill bit is first inclined, and then the drilling is switched to horizontal drilling after reaching the predetermined height to obtain the advanced horizontal high-position drilling hole and the advanced horizontal low-position drilling hole, and the detectors are sent to the predetermined positions of the advanced horizontal high-position drilling hole and the advanced horizontal low-position drilling hole. After all the detectors are installed, the advanced horizontal high-position drilling hole and the advanced horizontal low-position drilling hole are grouted.

5. The method according to claim 4, characterized in that The inclination direction of the advanced horizontal high-position drilling is 30° north-west, and the vertical distance between the horizontal section and the coal seam is 100m. The inclination direction of the advanced horizontal low-position drilling is 30° east-northeast, and the vertical distance between the horizontal section and the coal seam is 50m.

6. The method according to claim 3, characterized in that The horizontal section lengths of the advanced horizontal deep drilling hole and the advanced horizontal shallow drilling hole are the same and are both the first length threshold, the detector spacing in the advanced horizontal deep drilling hole and the advanced horizontal shallow drilling hole is the same and is both the second length threshold, the second number threshold of detectors are installed in the advanced horizontal deep drilling hole, and the first number threshold of detectors are installed in the advanced horizontal shallow drilling hole.

7. The method according to claim 6, characterized in that During the construction of advanced horizontal deep drilling and advanced horizontal shallow drilling, the drill bit is first inclined, and then switched to horizontal drilling after reaching the predetermined depth to obtain the advanced horizontal deep drilling and advanced horizontal shallow drilling, and the detectors are sent to the predetermined positions of the advanced horizontal deep drilling and advanced horizontal shallow drilling. After all the detectors are installed, the advanced horizontal deep drilling and advanced horizontal shallow drilling are grouted.

8. The method according to claim 7, characterized in that The inclination direction of the advanced horizontal deep drilling is 30°south-east, and the vertical distance between the horizontal section and the coal seam is 100m. The inclination direction of the advanced horizontal shallow drilling is 30°south-west, and the vertical distance between the horizontal section and the coal seam is 50m.

9. The method according to claims 4 and 7, characterized in that The predetermined positions of the detectors in the advanced horizontal high-position drilling, advanced horizontal low-position drilling, advanced horizontal deep-position drilling and advanced horizontal shallow-position drilling are calculated by the crawling distance of the crawling robot or the advancement distance of the drill bit corresponding to the drill rig pushing the drill rod.

10. The method according to claim 3, characterized in that: The detectors installed on the top plate anchor rods behind the tunneling head and which can flow as the working face advances have a spacing equal to the second length threshold.

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