CN220872688U - Roof caving coal safety exploitation monitoring system based on coupling of microseism and electric method - Google Patents
Roof caving coal safety exploitation monitoring system based on coupling of microseism and electric method Download PDFInfo
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- CN220872688U CN220872688U CN202321917928.7U CN202321917928U CN220872688U CN 220872688 U CN220872688 U CN 220872688U CN 202321917928 U CN202321917928 U CN 202321917928U CN 220872688 U CN220872688 U CN 220872688U
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- 239000003245 coal Substances 0.000 title claims abstract description 25
- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
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- 230000008878 coupling Effects 0.000 title claims abstract description 16
- 238000010168 coupling process Methods 0.000 title claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 16
- 239000011435 rock Substances 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims description 54
- 230000000903 blocking effect Effects 0.000 claims description 20
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 18
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 18
- 241001330002 Bambuseae Species 0.000 claims description 18
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 18
- 239000011425 bamboo Substances 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 17
- 241000935974 Paralichthys dentatus Species 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 8
- 241000242541 Trematoda Species 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 238000011084 recovery Methods 0.000 abstract description 6
- 230000009172 bursting Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 9
- 238000004873 anchoring Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010291 electrical method Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
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- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of safety exploitation of top coal and discloses a safety exploitation monitoring system of top coal based on coupling of microseism and an electric method. The monitoring system can dynamically monitor microseismic events near the underground fault surrounding rock and analyze the positions of water bursting points, and can better obtain rock rupture and water damage distribution conditions in the underground fault surrounding rock by utilizing the coupled action of microseismic and electric method, thereby providing technical parameters for later treatment, guaranteeing safe recovery of top coal caving and greatly improving underground construction efficiency.
Description
Technical Field
The utility model relates to the technical field of safety exploitation of caving coal, in particular to a safety exploitation monitoring system of caving coal based on coupling of microseismic and electric method.
Background
The coal resources of China are rich, but the geological conditions are complex, so that geological disasters occur in coal mining. Along with the further increase of the mining depth and the mining intensity of the coal mine, the threat of the stope face to the pressurized water is increasingly serious, and particularly, the problems of water burst prediction and prevention of the stope face with a fault structure are more prominent.
In order to solve a large amount of coal resources threatened by water damage and realize the pressure mining of a safety belt of a mining working face with a fault structure, the information evolution rules such as a mining fault stress field, a seepage field and the like in the working face and the seepage water burst channel forming process must be subjected to real-time and dynamic on-site monitoring research, and fault water burst associated signals are quantitatively judged and identified so as to obtain rock fracture and water damage distribution conditions in underground fault surrounding rocks, thereby providing technical parameters for later treatment. Therefore, research on a microearthquake and electric method coupled caving coal safety exploitation monitoring system is necessary.
Disclosure of utility model
Aiming at the problems in the prior art, the utility model provides a roof caving coal safety exploitation monitoring system based on coupling of microseismic and electric method.
In order to solve the technical problems, the utility model is solved by the following technical scheme:
The utility model provides a safe exploitation monitoring system of caving coal based on microseism and electric method coupling, includes microseism detection module, resistance detection module and data processing module, and microseism detection module includes a plurality of microseism sensors that are used for gathering microseism signal, and a plurality of microseism sensors all install on the fault surrounding rock in pit through the installation component, and resistance detection module includes a plurality of electrodes that are used for gathering the resistivity signal of fault surrounding rock in pit, and data processing module includes the PC that is used for handling microseism signal and resistivity signal.
Preferably, the installation component includes a fixed section of thick bamboo, be equipped with slidable installation section of thick bamboo in the fixed section of thick bamboo, the outer wall of installation section of thick bamboo and the inner wall slip laminating setting of fixed section of thick bamboo, the one end opening part threaded connection of fixed section of thick bamboo has the screw thread spare that is used for installing installation section of thick bamboo fixed mounting in the fixed section of thick bamboo, microseism sensor installs in the fixed section of thick bamboo, be equipped with the through-hole that supplies microseism sensor's signal line to stretch out on the screw thread spare.
Preferably, the screw comprises a screw ring which is in threaded connection with an opening at one end of the fixed cylinder and a blocking block which is in threaded connection with the screw ring, a clamping groove which is used for the opening end of the installation cylinder to extend in is formed in the end part of the screw ring extending into the fixed cylinder along the circumferential direction of the screw ring, a blocking ring is arranged in the installation cylinder and positioned at the opening end along the circumferential direction of the installation cylinder, a first inclined surface is arranged on the blocking ring along the circumferential direction of the blocking ring, and a first abutting surface matched with the first inclined surface is arranged on the end surface of the blocking block extending into the installation cylinder.
Preferably, a poking column is arranged on the end face of the blocking block, which is positioned outside the fixed cylinder.
Preferably, flukes are uniformly distributed on the outer side wall of the fixed cylinder along the circumferential direction of the fixed cylinder.
Preferably, a cavity is arranged in the side wall of the fixed barrel along the circumferential direction of the side wall, the fluke is axially provided with a runner communicated with the cavity, the side wall of the fluke is provided with a flow hole communicated with the runner, and the side wall of the fixed barrel is provided with a grouting pipe communicated with the cavity.
Preferably, a bottom block is arranged at the other end part of the fixed cylinder, a convex ring is arranged on the end surface of the bottom block positioned in the fixed cylinder along the circumferential direction of the bottom block, a second inclined surface is arranged on the convex ring along the circumferential direction of the convex ring, and a second abutting surface matched with the second inclined surface is arranged on the bottom end surface of the mounting cylinder.
Compared with the prior art, the utility model has the beneficial effects that:
1. The monitoring system can dynamically monitor microseismic events near the underground fault surrounding rock and analyze the positions of water bursting points, and can better obtain rock rupture and water damage distribution conditions in the underground fault surrounding rock by utilizing the coupled action of microseismic and electric method, thereby providing technical parameters for later treatment, guaranteeing safe recovery of top coal caving and greatly improving underground construction efficiency.
2. According to the utility model, through the arrangement of the fixed cylinder, the mounting cylinder and the threaded piece, the installation of the microseismic sensor on the underground fault surrounding rock can be preferably realized, meanwhile, the recovery of the microseismic sensor after the installation is convenient, and the recovery operation is simple and convenient.
Drawings
FIG. 1 is a schematic structural diagram of a roof caving coal safety mining monitoring system based on microseismic and electric coupling in the utility model.
Fig. 2 is a schematic structural view of a mounting assembly according to the present utility model.
Fig. 3 is a schematic cross-sectional view of a mounting assembly of the utility model.
Fig. 4 is a schematic exploded view of the screw member of the utility model.
Fig. 5 is a schematic view of a mounting cylinder in the utility model in semi-section.
The names of the parts indicated by the numerical references in the drawings are as follows:
100. A fixed cylinder; 101. flukes; 102. a flow hole; 103. grouting pipe; 120. a threaded ring; 130. blocking; 131. a through hole; 132. a poking column; 200. a mounting cylinder; 201. a threaded column; 211. a cavity; 212. a flow passage; 220. a bottom block; 221. a convex ring; 230. a microseismic sensor; 231. a signal line; 311. a first abutment surface; 321. a clamping groove; 322. a limit part; 400. a baffle ring; 401. a first inclined surface; 411. and a second abutting surface.
Detailed Description
For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples. It is to be understood that the examples are illustrative of the present utility model and are not intended to be limiting.
In the description of the present utility model, 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1, the embodiment provides a roof caving coal safety mining monitoring system based on coupling of microseismic and electric method, which comprises a microseismic detection module, a resistance detection module and a data processing module, wherein the microseismic detection module comprises a plurality of microseismic sensors 230 for acquiring microseismic signals, the resistance detection module comprises a plurality of electrodes for acquiring resistivity signals of underground fault surrounding rocks, and the data processing module comprises a PC (personal computer) for processing the microseismic signals and the resistivity signals.
In the embodiment, a micro-seismic information acquisition and monitoring early warning program is installed on the PC, and the micro-seismic detection module further comprises a micro-seismic demodulator, wherein when the micro-seismic detection module is in actual use, signal wires of a plurality of micro-seismic sensors are connected to the micro-seismic demodulator, and the micro-seismic demodulator is connected with the PC, so that the micro-seismic demodulator can convert optical wavelength signals into electric signals and transmit the electric signals to the PC;
The PC is also provided with a resistivity signal real-time acquisition and inversion imaging program, the resistance detection module further comprises a network parallel electrical method instrument, signal transmission cables of a plurality of electrodes are connected to the network parallel electrical method instrument, and the network parallel electrical method instrument is connected with the PC, so that real-time inversion imaging of the resistivity signal of the underground fault surrounding rock is realized, the permeability evolution law of the fault surrounding rock and the formation process of a seepage water burst channel are qualitatively analyzed, and early warning and pressure-bearing fault activation water burst is monitored;
The PC may adopt a structure disclosed in the patent CN108412547B, which is an existing structure, and will not be described herein.
The monitoring system in the embodiment can dynamically monitor microseismic events near the underground fault surrounding rock and analyze the positions of water bursting points, and can better obtain rock rupture and water damage distribution conditions in the underground fault surrounding rock by utilizing the coupling effect of microseismic and electric method, so that technical parameters are provided for later treatment, the safe recovery of top coal caving is ensured, and the underground construction efficiency is greatly improved.
Referring to fig. 2-5, in this embodiment, the plurality of microseismic sensors 230 are all installed on the underground fault surrounding rock through an installation component, the installation component includes a fixed cylinder 100, a slidable installation cylinder 200 is disposed in the fixed cylinder 100, an outer wall of the installation cylinder 200 is slidably attached to an inner wall of the fixed cylinder 100, a threaded member for fixedly installing the installation cylinder 200 in the fixed cylinder 100 is screwed at an opening at one end of the fixed cylinder 100, the microseismic sensors 230 are installed in the fixed cylinder 100, and a through hole 131 for extending a signal line 231 of the microseismic sensors 230 is disposed on the threaded member.
In this embodiment, the microseismic sensor 230 is installed in an installation component, the installation component is installed in a borehole preset by the underground fault surrounding rock, and an anchoring agent is injected into the borehole, so that the installation component is fixedly installed in the borehole, and the microseismic generated by the underground fault surrounding rock can be transmitted to the installation component and detected by the microseismic sensor therein;
Wherein, one end of the installation cylinder 200 is opened, the opening end faces the opening end of the fixed cylinder 100, a threaded column 201 is arranged at the center position of the bottom wall in the installation cylinder 200, and the microseismic sensor 230 is connected to the threaded column 201 in a threaded manner, so that the fixed installation of the microseismic sensor 230 in the installation cylinder 200 is preferably realized;
The installation cylinder 200 can extend from the opening end of the fixed cylinder 100, and the threaded member is arranged at the opening end of the fixed cylinder 100, so that the installation cylinder 200 can be preferably fixed in the fixed cylinder 100, and vibration can be preferably transmitted between the installation cylinder 200 and the inner wall of the fixed cylinder 100 due to the fact that the outer wall of the installation cylinder 200 is attached to the inner wall of the fixed cylinder 100, and the microseism sensor 230 can conveniently detect the microseism; during actual use, the screw thread of the screw thread piece at the opening of the fixed cylinder 100 is utilized to disassemble, so that when the fixed cylinder 100 is fixed in a drill hole, the mounting cylinder 200 mounted in the fixed cylinder 100 can be disassembled through the screw thread piece, namely, the recovery of the microseismic sensor is realized;
Wherein, the signal wire 231 of the microseismic sensor 230 installed in the installation cylinder 200 can be extended by the arrangement of the through hole 131, thereby facilitating the installation of the microseismic sensor 230 on the downhole fault surrounding rock by the installation assembly.
In this embodiment, the threaded member includes a threaded ring 120 screwed onto an opening at one end of the fixed cylinder 100 and a blocking piece 130 screwed onto the threaded ring 120, a clamping groove 321 for the opening end of the installation cylinder 200 to extend into is provided along the circumferential direction of the end of the threaded ring 120 extending into the fixed cylinder 100, a blocking ring 400 is provided along the circumferential direction of the opening end in the installation cylinder 200, a first inclined surface 401 is provided along the circumferential direction of the blocking ring 400, and a first abutting surface 311 matched with the first inclined surface 401 is provided on the end surface of the blocking piece 130 extending into the installation cylinder 200.
In this embodiment, the threaded ring 120 is screwed to the open end of the fixed cylinder 100, and the upper end thereof is located at the outer edge and protrudes outwards to form a limiting portion 322 overlapping the open end of the fixed cylinder 100, so that the installation of the threaded ring 120 at the open end of the fixed cylinder 100 is preferably realized by this configuration;
Through the arrangement of the clamping groove 321, when the threaded ring 120 extends into the fixed cylinder 100 in actual installation, the opening end of the installation cylinder 200 extends into the clamping groove 321, so that the installation cylinder 200 is better limited, the outer wall of the installation cylinder 200 is ensured to be attached to the inner wall of the fixed cylinder 100, and meanwhile, the installation cylinder 200 can be pushed to move into the fixed cylinder 100 when the threaded ring 120 is screwed in, so that the installation cylinder 200 is installed;
The baffle ring 400, the first inclined surface 401, the blocking block 130 and the first abutting surface 311 are arranged, so that in actual use, the blocking block 130 is in threaded connection with the threaded ring 120, when the threads extend into the threaded ring 120 arranged in the fixed cylinder 100, the first abutting surface 311 moves downwards to squeeze the first inclined surface 401, thereby driving the outer wall of the mounting cylinder 200 to tightly expand on the inner wall of the fixed cylinder 100, and enabling the attaching effect between the first inclined surface 401 and the first abutting surface to be better, thereby facilitating the transmission of vibration between the first inclined surface 401 and the second inclined surface to facilitate the microseism detection of the microseism sensor 230;
wherein the through hole 131 is provided at a central position of the block 130.
In this embodiment, the blocking piece 130 is provided with a shifting post 132 on the end surface of the fixing barrel 100, and the blocking piece 130 can be preferably shifted to rotate by the shifting post 132 by using the setting of the shifting post 132, so that the dismounting of the blocking piece on the threaded ring 120 is preferably realized.
In practical use, the other end of the fixed cylinder 100 is provided with a bottom block 220, the end surface of the bottom block 220 located in the fixed cylinder 100 is provided with a convex ring 221 along the circumferential direction thereof, the convex ring 221 is provided with a second inclined surface along the circumferential direction thereof, and the bottom end surface of the mounting cylinder 200 is provided with a second abutting surface 411 matched with the second inclined surface.
In this embodiment, the bottom block 220 is screwed to the opening at the other end of the fixed cylinder 100, so that the other end of the fixed cylinder 100 is plugged; through the arrangement of the convex ring 221, the second inclined surface and the second abutting surface 411, when the screw member is screwed into the fixed cylinder 100 to fix the mounting cylinder 200, the mounting cylinder 200 moves downwards to enable the second abutting surface 411 to abut against the second inclined surface, so that the connection between the lower end part of the mounting cylinder 200 and the lower end part of the fixed cylinder 100 is tighter, vibration can be transmitted at the position preferably, and the microseism sensor 230 is convenient for microseism detection;
in this embodiment, flukes 101 are uniformly distributed on the outer side wall of the fixed cylinder 100 along the circumferential direction thereof.
In this embodiment, through the setting of the fluke 101, the anchoring agent is solidified to fix the fluke 101, so that the fixing effect of the fixing cylinder 100 in the preset borehole on the downhole fault surrounding rock is better.
In this embodiment, a cavity 211 is disposed along the circumferential direction in the side wall of the fixed cylinder 100, a flow channel 212 communicating with the cavity 211 is disposed along the axial direction of the fluke 101, a flow hole 102 communicating with the flow channel 212 is disposed on the side wall of the fluke 101, and a grouting pipe 103 communicating with the cavity 211 is disposed on the side wall of the fixed cylinder 100.
By the construction in this embodiment, the anchoring agent is injected into the cavity 211 from the grouting pipe 103, and the anchoring agent injected into the cavity 211 can flow out from the runner 212 through the flow hole 102, so that the anchoring agent is preferably uniformly filled at the periphery of the fluke 101, and the effect of solidifying and fixing the fixing cylinder 100 is further improved.
When the microseismic and electric coupling-based roof caving safety mining monitoring system of the embodiment is specifically used, firstly, a plurality of microseismic sensors 230 and electrodes are installed on underground fault surrounding rock, the microseismic events and water bursting points are monitored by the monitoring system, and rock fracture and water damage distribution conditions in the underground fault surrounding rock are preferably obtained, wherein when the microseismic sensors 230 are installed, firstly, the microseismic sensors 230 are installed in an installation cylinder 200, then the installation cylinder 200 is placed in a fixed cylinder 100, then a threaded ring 120 is screwed into the fixed cylinder 100, the installation cylinder 200 is installed, then a blocking piece 130 is screwed into the threaded ring 120, the installation cylinder 200 is preferably attached to the fixed cylinder 100, then the fixed cylinder 100 is placed in a preset drilling hole, and anchoring agent is injected into a cavity 211 through a grouting pipe 103, so that the fixed cylinder 100 is preferably installed in the drilling hole.
In summary, the foregoing description is only of the preferred embodiments of the present utility model, and all equivalent changes and modifications made in accordance with the claims should be construed to fall within the scope of the utility model.
Claims (7)
1. The utility model provides a safe exploitation monitoring system of caving coal based on microseism and electric method coupling which characterized in that: the micro-seismic sensor system comprises a micro-seismic detection module, a resistance detection module and a data processing module, wherein the micro-seismic detection module comprises a plurality of micro-seismic sensors (230) used for acquiring micro-seismic signals, the plurality of micro-seismic sensors (230) are all installed on underground fault surrounding rocks through installation components, the resistance detection module comprises a plurality of electrodes used for acquiring resistivity signals of the underground fault surrounding rocks, and the data processing module comprises a PC (personal computer) used for processing the micro-seismic signals and the resistivity signals.
2. The microearthquake and electric method coupling-based caving coal safety exploitation monitoring system according to claim 1, wherein: the installation component includes fixed section of thick bamboo (100), be equipped with slidable installation section of thick bamboo (200) in fixed section of thick bamboo (100), the outer wall of installation section of thick bamboo (200) and the inner wall slip laminating setting of fixed section of thick bamboo (100), the one end opening part threaded connection of fixed section of thick bamboo (100) has the screw thread spare that is used for installing installation section of thick bamboo (200) fixed mounting in fixed section of thick bamboo (100), microseism sensor (230) are installed in fixed section of thick bamboo (100), be equipped with through-hole (131) that supply signal line (231) of microseism sensor (230) to stretch out on the screw thread spare.
3. The microearthquake and electric method coupling-based caving coal safety exploitation monitoring system according to claim 2, characterized in that: the screw comprises a threaded ring (120) which is connected with one end opening of a fixed cylinder (100) in a threaded manner and a blocking block (130) which is connected with the threaded ring (120) in a threaded manner, a clamping groove (321) which is used for the installation cylinder (200) to extend into is formed in the end part of the threaded ring (120) extending into the fixed cylinder (100) along the circumferential direction of the threaded ring, a baffle ring (400) is arranged in the installation cylinder (200) and located at the opening end along the circumferential direction of the installation cylinder, a first inclined surface (401) is arranged on the baffle ring (400) along the circumferential direction of the baffle ring, and a first abutting surface (311) matched with the first inclined surface (401) is arranged on the end surface of the blocking block (130) extending into the installation cylinder (200).
4. The microearthquake and electric method coupling-based caving coal safety exploitation monitoring system according to claim 3, wherein: the end face of the blocking block (130) positioned outside the fixed cylinder (100) is provided with a poking column (132).
5. The microearthquake and electric method coupling-based caving coal safety exploitation monitoring system according to claim 2, characterized in that: flukes (101) are uniformly distributed on the outer side wall of the fixed cylinder (100) along the circumferential direction of the fixed cylinder.
6. The microearthquake and electric method coupling-based caving coal safety exploitation monitoring system according to claim 5, wherein: the grouting device is characterized in that a cavity (211) is formed in the side wall of the fixed barrel (100) along the circumferential direction of the side wall, a flow channel (212) communicated with the cavity (211) is formed in the fluke (101) along the axial direction of the fluke, a flow hole (102) communicated with the flow channel (212) is formed in the side wall of the fluke, and a grouting pipe (103) communicated with the cavity (211) is arranged on the side wall of the fixed barrel (100).
7. The microearthquake and electric method coupling-based caving coal safety exploitation monitoring system according to claim 2, characterized in that: the bottom block (220) is arranged at the other end part of the fixed cylinder (100), a convex ring (221) is arranged on the end face of the bottom block (220) positioned in the fixed cylinder (100) along the circumferential direction of the bottom block, a second inclined surface is arranged on the convex ring (221) along the circumferential direction of the convex ring, and a second abutting surface (411) matched with the second inclined surface is arranged on the bottom end face of the mounting cylinder (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321917928.7U CN220872688U (en) | 2023-07-20 | 2023-07-20 | Roof caving coal safety exploitation monitoring system based on coupling of microseism and electric method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321917928.7U CN220872688U (en) | 2023-07-20 | 2023-07-20 | Roof caving coal safety exploitation monitoring system based on coupling of microseism and electric method |
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| Publication Number | Publication Date |
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| CN220872688U true CN220872688U (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321917928.7U Active CN220872688U (en) | 2023-07-20 | 2023-07-20 | Roof caving coal safety exploitation monitoring system based on coupling of microseism and electric method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220872688U (en) |
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2023
- 2023-07-20 CN CN202321917928.7U patent/CN220872688U/en active Active
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