CN117418903B - Intelligent patrol equipment for monitoring and alarming deformation of gob-side entry retaining roadway - Google Patents
Intelligent patrol equipment for monitoring and alarming deformation of gob-side entry retaining roadway Download PDFInfo
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- CN117418903B CN117418903B CN202311263463.2A CN202311263463A CN117418903B CN 117418903 B CN117418903 B CN 117418903B CN 202311263463 A CN202311263463 A CN 202311263463A CN 117418903 B CN117418903 B CN 117418903B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 77
- 230000007246 mechanism Effects 0.000 claims abstract description 53
- 239000011435 rock Substances 0.000 claims abstract description 6
- 230000000712 assembly Effects 0.000 claims abstract description 3
- 238000000429 assembly Methods 0.000 claims abstract description 3
- 238000006073 displacement reaction Methods 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 25
- 238000007689 inspection Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 6
- 239000003245 coal Substances 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012502 risk assessment Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses intelligent patrol equipment for monitoring and alarming deformation of a gob-side entry retaining roadway, which comprises the following components: the support frame is arranged in the gob-side entry retaining roadway in a frame mode; the deformation monitoring mechanisms are distributed in a plurality, each deformation monitoring mechanism is vertically and slidably inserted on the support frame, and one end of each deformation monitoring mechanism extends into the surrounding rock of the roadway and the top plate; the stress monitoring component is sleeved at the end part of the deformation monitoring mechanism; and the guide rail is transversely and overhead between the support frames, a patrol mechanism is arranged on the guide rail in a sliding manner, and the patrol mechanism records and uploads monitoring data of the deformation monitoring mechanisms and the stress monitoring assemblies on the support frames.
Description
Technical Field
The invention belongs to the technical field of roadway monitoring equipment, and particularly relates to intelligent patrol equipment for monitoring and alarming deformation of a gob-side entry retaining roadway.
Background
In downhole coal mining operations, monitoring activities on roadway contours are a safety-relevant necessity. The tunnel deformation mainly takes the form of top plate deformation, side wall deformation and floor heave deformation under the influence of the pressure of the underground rock stratum and the pressure born by the tunnel comes from all directions of the tunnel; the traditional roadway deformation monitoring mainly detects roadway deformation through a range finder, and cannot truly dataize the supporting strength of the supporting structure, so that deformation measurement is carried out only by adopting visual positioning comparison in monitoring, risk assessment cannot be achieved, the limitation is high, and the reliability is low.
Therefore, it is necessary to provide an intelligent patrol equipment for monitoring and alarming the deformation of the gob-side entry retaining roadway so as to solve the problems in the background art.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: intelligent inspection equipment for monitoring and alarming deformation of gob-side entry retaining roadway is characterized in that: it comprises the following steps:
the support frame is arranged in the gob-side entry retaining roadway in a frame mode;
the deformation monitoring mechanisms are distributed in a plurality, each deformation monitoring mechanism is vertically and slidably inserted on the support frame, and one end of each deformation monitoring mechanism extends into the surrounding rock of the roadway and the top plate;
the stress monitoring component is sleeved at the end part of the deformation monitoring mechanism; and
the guide rail is transversely overhead between the support frames, a patrol mechanism is arranged on the guide rail in a sliding mode, and the patrol mechanism records and uploads monitoring data of the deformation monitoring mechanisms and the stress monitoring assemblies on the support frames.
Further, preferably, the deformation monitoring mechanism includes:
the connecting frame plate is internally provided with two positioning holes in bilateral symmetry;
the inserting anchor rods are fixed in the positioning holes, and one ends of the inserting anchor rods penetrate into the coal seam;
the connecting rods are rotationally connected to two sides of the connecting frame plates, sealing cylinders are arranged between the adjacent connecting frame plates, one ends of the connecting rods extend into the sealing cylinders, sealing plugs are fixed on the connecting rods, and the connecting rods are in sliding connection with the sealing cylinders through the sealing plugs;
the inner spring is sleeved on the connecting rod, and one end of the inner spring is abutted against the sealing cylinder for contact;
the air flow main pipe is overhead on the support frame and is communicated with each sealing cylinder through a side pipe;
the upper displacement feedback device is arranged on the support frame and is communicated with the air flow main pipe through the branch pipe and used for feeding back the total deformation amount in real time, and the inspection mechanism can upload deformation data records based on the upper displacement feedback device.
Further, preferably, the upper displacement feedback device includes:
the upper connecting frame is fixed on the support frame and is provided with a positioning disc in a sliding manner;
the shaft cylinder is fixed on the support frame, a shaft lever is arranged in the shaft cylinder in a sliding mode, and one end of the shaft lever is connected with the positioning disk;
and the supporting spring is arranged between the shaft rod and the shaft cylinder, and one end of the branch pipe is connected with the shaft cylinder.
Further, preferably, the stress monitoring assembly includes:
the outer joint plates are circumferentially distributed, are mutually stacked and are connected with the splicing anchor rods on the deformation monitoring mechanism through telescopic rods;
the air pressure bags are arranged in the outer joint plate and are communicated with the air flow cavity in the inserted anchor rod through air pipes.
Further, preferably, a lower displacement feedback device is further arranged below the upper displacement feedback device on the support frame, and the lower displacement feedback device is communicated with the airflow cavity of each splicing anchor rod.
Further, preferably, the inspection mechanism includes:
a driving main body, wherein a circuit main board is arranged in the driving main body;
the controller is connected to the circuit main board and externally connected with a power supply circuit;
the first laser sensor is arranged on the driving main body and is connected with the controller through the angle sensor;
the second laser sensor is arranged on the driving main body and is connected with the controller through the angle sensor;
and the alarm module is arranged on the driving main body and is connected with the circuit main board.
Further, preferably, the first laser sensor may perform distance measurement feedback on an upper displacement feedback device in the deformation monitoring mechanism, and the second laser sensor may perform distance measurement feedback on a lower displacement feedback device in the stress monitoring assembly.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the deformation of the gob-side entry retaining roadway can be fed back in a data mode based on the deformation monitoring mechanism and the stress monitoring component in the roadway, the service life of the roadway is judged based on the supporting strength of the supporting frame, and the data reliability is high without manual observation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a deformation monitoring mechanism according to the present invention;
FIG. 3 is a schematic diagram of a stress monitoring assembly according to the present invention;
FIG. 4 is a schematic diagram of the structure of the upper displacement feedback device in the present invention;
FIG. 5 is a schematic diagram of a stress monitoring assembly according to the present invention;
FIG. 6 is a schematic diagram of the inspection mechanism according to the present invention;
in the figure: 1. a support frame; 11. a guide rail; 2. a deformation monitoring mechanism; 21. a connecting frame plate; 22. inserting an anchor rod; 23. a connecting rod; 24. sealing the cylinder; 25. an air flow main pipe; 26. a branch pipe; 3. a stress monitoring assembly; 31. an outer panel; 32. an air pressure bag; 33. an air pressure bag; 4. a patrol mechanism; 41. a driving body; 42. a circuit motherboard; 43. a controller; 44. a first laser sensor; 45. a second laser sensor; 5. an upper displacement feedback device; 51. an upper connecting frame; 52. a positioning plate; 53. a shaft cylinder; 54. and a shaft lever.
Detailed Description
Referring to fig. 1, in an embodiment of the present invention, an intelligent patrol equipment for monitoring and alarming deformation of a gob-side entry retaining roadway includes:
the support frame 1 is arranged in the gob-side entry retaining roadway;
the deformation monitoring mechanisms 2 are distributed in a plurality, each deformation monitoring mechanism 2 is vertically and slidably inserted on the support frame 1, and one end of each deformation monitoring mechanism 2 extends into the surrounding rock of the roadway and the roof;
the stress monitoring assembly 3 is sleeved at the end part of the deformation monitoring mechanism 2; and
the guide rail 11 transversely aerial between the support frames 1, the guide rail 11 is provided with the inspection mechanism 4 in a sliding manner, the inspection mechanism 4 records and uploads the monitoring data of the deformation monitoring mechanism 2 and the stress monitoring assembly 3 on each support frame 1, namely the inspection mechanism can inspect roadway deformation of each support frame one by one without manual intervention.
In this embodiment, the deformation monitoring mechanism 2 includes:
the connecting frame plate 21 is internally provided with two positioning holes in bilateral symmetry;
the inserting anchor rods 22 are fixed in the positioning holes, and one ends of the inserting anchor rods 22 penetrate deep into the coal seam;
the connecting rods 23 are rotatably connected to two sides of the connecting frame plates 21, sealing cylinders 24 are arranged between adjacent connecting frame plates 21, one ends of the connecting rods 23 extend into the sealing cylinders 24, sealing plugs are fixed on the connecting rods 23, and the connecting rods are in sliding connection with the sealing cylinders 24 through the sealing plugs;
an inner spring which is sleeved on the connecting rod 23, and one end of the inner spring is propped against and contacted with the sealing cylinder 24;
an air flow main pipe 25 which is overhead on the support frame 1, wherein the air flow main pipe 25 is communicated with each sealing cylinder 24 through a side pipe; when the tunnel is deformed in a protruding way, the connecting frame plates displace along with the deformation area, and connecting rods on two sides of the connecting frame plates can slide and displace from the sealing cylinders sequentially, at the moment, air flow in the sealing cylinders is pumped and discharged through negative pressure of the sealing plugs to air in the air flow main pipe;
the upper displacement feedback device 5 is arranged on the support frame 1, the upper displacement feedback device 5 is communicated with the air current main pipe 25 through a branch pipe 26 and is used for feeding back the total deformation amount in real time, and the inspection mechanism 4 can upload deformation data records based on the upper displacement feedback device 5, so that the upper displacement feedback device can carry out data feedback on the integral deformation amount of the corresponding area in the roadway.
As a preferred embodiment, the upper displacement feedback device 5 includes:
an upper connection frame 51 fixed on the support frame 1, wherein a positioning disk 52 is slidably arranged on the upper connection frame 51;
the shaft cylinder 53 is fixed on the support frame 1, a shaft rod 54 is arranged in the shaft cylinder 53 in a sliding mode, and one end of the shaft rod 54 is connected with the positioning disc 52;
the supporting spring is arranged between the shaft rod 54 and the shaft cylinder 53, one end of the branch pipe 26 is connected with the shaft cylinder 53, namely when the tunnel is internally protruded and deformed, the air flow main pipe can pump air to the shaft cylinder under negative pressure, and the shaft rod synchronously drives the positioning disc in downward displacement at the moment, so that distance measurement feedback is carried out by the inspection mechanism, and deformation monitoring is realized.
In this embodiment, the stress monitoring assembly 3 includes:
the outer section plates 31 are circumferentially distributed, and the outer section plates 31 are mutually stacked and connected with the plug anchor rod 22 on the deformation monitoring mechanism 2 through the telescopic rod 33;
the atmospheric pressure bag 32 sets up in outer festival board 31, and each atmospheric pressure bag 32 is linked together through the trachea with the air current chamber in the grafting stock 22, and especially, stress monitoring subassembly can carry out real-time supervision to the tunnel country rock internal stress, based on colliery tunnel life, deformation volume and mathematical expression between the internal stress can simply represent as follows:
relation between roadway service life (L) and deformation quantity (D):
the service life can be regarded as a function of the amount of deformation, with the service life decreasing with increasing amount of deformation. This can be expressed as a function of the negative correlation, where k is a constant related to mine and roadway properties and n is an index representing the deformation effect.
L = L 0 - k * D^n
Wherein L0 is the initial service life without deformation.
Relationship between deformation amount (D) and internal stress (S):
the amount of deformation may be related to the magnitude of the internal stress, which may be expressed as a linear relationship:
D = k 1 * S
where k 1 is the proportionality coefficient between deformation and stress.
Relation between roadway service life (L) and internal stress (S):
the service life can also be expressed in relation to internal stress as:
L = L 0- k 2* S^n
wherein L0 is the initial service life without stress, k 2 is a constant related to the roadway and geological conditions, and n is an index representing the influence of stress, thereby realizing the variation of roadway service life under roadway support deformation.
In this embodiment, a lower displacement feedback device is further disposed below the upper displacement feedback device 5 on the support frame 1, and the lower displacement feedback device is communicated with the airflow chambers of the inserting anchor rods 22.
In this embodiment, the inspection mechanism 4 includes:
a driving main body 41 having a circuit board provided therein;
a controller 43 connected to the circuit board 42, wherein the controller 43 is externally connected with a power circuit;
a first laser sensor 44 provided on the driving body 41 and connected to the controller 43 through an angle sensor 46;
a second laser sensor 45 provided on the driving body 41 and connected to the controller 43 through an angle sensor 46;
the alarm module is disposed on the driving main body 41 and connected to the circuit board 42.
As a preferred embodiment, the first laser sensor 44 may perform ranging feedback on the upper displacement feedback device 5 in the deformation monitoring mechanism 2, and the second laser sensor 45 may perform ranging feedback on the lower displacement feedback device in the stress monitoring assembly 3, and especially, after the combination of the calculation of the roadway service life, the inspection mechanism may perform monitoring alarm more quickly.
Specifically, deformation monitoring mechanisms and stress monitoring components on support frames at all positions in the gob-side entry retaining roadway can respectively monitor roadway deformation and internal stress change conditions in real time, monitoring data record uploading is carried out in sliding along a guide rail by a routing inspection mechanism, roadway service life conditions are estimated after calculation based on a formula framework, gob-side entry retaining roadway risks are better estimated, and accuracy is high.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. Intelligent inspection equipment for monitoring and alarming deformation of gob-side entry retaining roadway is characterized in that: it comprises the following steps:
the support frame (1) is arranged in the gob-side entry retaining roadway;
the deformation monitoring mechanisms (2) are distributed in a plurality, each deformation monitoring mechanism (2) is vertically and slidably inserted on the supporting frame (1), and one end of each deformation monitoring mechanism (2) extends into the surrounding rock of the roadway and the top plate;
the stress monitoring assembly (3) is sleeved at the end part of the deformation monitoring mechanism (2); and
the guide rail (11) is transversely and overhead between the support frames (1), a patrol mechanism (4) is arranged on the guide rail (11) in a sliding mode, and the patrol mechanism (4) records and uploads monitoring data of the deformation monitoring mechanisms (2) and the stress monitoring assemblies (3) on the support frames (1);
the deformation monitoring mechanism (2) comprises:
the connecting frame plate (21) is internally provided with two positioning holes in bilateral symmetry;
the inserting anchor rods (22) are fixed in the positioning holes, and one ends of the inserting anchor rods (22) penetrate deep into the coal seam;
the connecting rods (23) are rotationally connected to two sides of the connecting frame plates (21), sealing cylinders (24) are arranged between the adjacent connecting frame plates (21), one ends of the connecting rods (23) extend into the sealing cylinders (24), sealing plugs are fixed on the connecting rods (23), and the connecting rods are in sliding connection with the sealing cylinders (24) through the sealing plugs;
an inner spring which is sleeved on the connecting rod (23), and one end of the inner spring is propped against and contacted with the sealing cylinder (24);
the air flow main pipe (25) is overhead on the support frame (1), and the air flow main pipe (25) is communicated with each sealing cylinder (24) through a side pipe;
go up displacement feedback ware (5), install on strut (1), go up displacement feedback ware (5) through branch pipe (26) with air current is responsible for (25) and be linked together for real-time feedback deformation total amount, patrol and examine mechanism (4) can be based on last displacement feedback ware (5) with deformation data record uploading.
2. The intelligent patrol equipment for monitoring and alarming deformation of gob-side entry retaining roadway according to claim 1, which is characterized in that: the upper displacement feedback device (5) comprises:
an upper connecting frame (51) fixed on the support frame (1), wherein a positioning disc (52) is arranged on the upper connecting frame (51) in a sliding manner;
the shaft cylinder (53) is fixed on the support frame (1), a shaft lever (54) is arranged in the shaft cylinder (53) in a sliding mode, and one end of the shaft lever (54) is connected with the positioning disc (52);
and a supporting spring arranged between the shaft lever (54) and the shaft cylinder (53), wherein one end of the branch pipe (26) is connected with the shaft cylinder (53).
3. The intelligent patrol equipment for monitoring and alarming deformation of gob-side entry retaining roadway according to claim 1, which is characterized in that: the stress monitoring assembly (3) comprises:
the outer joint plates (31) are circumferentially distributed, the outer joint plates (31) are mutually stacked and are connected with the inserting anchor rods (22) on the deformation monitoring mechanism (2) through telescopic rods (33);
the air pressure bags (32) are arranged in the outer joint plates (31), and each air pressure bag (32) is communicated with an air flow cavity in the inserted anchor rod (22) through an air pipe.
4. The intelligent patrol equipment for monitoring and alarming deformation of gob-side entry retaining roadway according to claim 3, which is characterized in that: the support frame (1) is positioned below the upper displacement feedback device (5) and is also provided with a lower displacement feedback device which is communicated with the airflow cavity of each splicing anchor rod (22).
5. The intelligent patrol equipment for monitoring and alarming deformation of gob-side entry retaining roadway according to claim 1, which is characterized in that: the inspection mechanism (4) comprises:
a drive main body (41) having a circuit board provided therein;
the controller (43) is connected to the circuit main board (42), and the controller (43) is externally connected with a power supply circuit;
a first laser sensor (44) provided on the driving body (41) and connected to the controller (43) through an angle sensor (46);
a second laser sensor (45) provided on the driving body (41) and connected to the controller (43) through an angle sensor (46);
the alarm module is arranged on the driving main body (41) and is connected with the circuit main board (42).
6. The intelligent patrol equipment for monitoring and alarming deformation of gob-side entry retaining roadway according to claim 5, which is characterized in that: the first laser sensor (44) can perform distance measurement feedback on the upper displacement feedback device (5) in the deformation monitoring mechanism (2), and the second laser sensor (45) can perform distance measurement feedback on the lower displacement feedback device in the stress monitoring assembly (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311263463.2A CN117418903B (en) | 2023-09-27 | 2023-09-27 | Intelligent patrol equipment for monitoring and alarming deformation of gob-side entry retaining roadway |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311263463.2A CN117418903B (en) | 2023-09-27 | 2023-09-27 | Intelligent patrol equipment for monitoring and alarming deformation of gob-side entry retaining roadway |
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| Publication Number | Publication Date |
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| CN117418903A CN117418903A (en) | 2024-01-19 |
| CN117418903B true CN117418903B (en) | 2024-04-02 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835759A (en) * | 2012-11-21 | 2014-06-04 | 西安众智惠泽光电科技有限公司 | Monitoring device for roadway support structure |
| CN108386218A (en) * | 2018-03-12 | 2018-08-10 | 中国矿业大学 | A kind of roadway bolt pretightning force is accurately constructed and monitoring allows pressure device and application method |
| CN108590628A (en) * | 2018-06-28 | 2018-09-28 | 中国矿业大学(北京) | A kind of device and method of monitoring coal body drilling transformation-temperature-gas flow |
| CN109813465A (en) * | 2019-03-18 | 2019-05-28 | 河南理工大学 | A kind of roadway surrounding rock stress original position dynamic monitor and working method |
| WO2020224223A1 (en) * | 2019-05-05 | 2020-11-12 | 中国矿业大学 | Anchor rod for surrounding rock support and instability monitoring, and mounting method thereof |
| WO2021036597A1 (en) * | 2019-08-27 | 2021-03-04 | 山东科技大学 | Robot and method for intelligently monitoring and evaluating dangerous gas source in unsealing closed tunnel of coal mine |
| CN114777660A (en) * | 2022-03-28 | 2022-07-22 | 呼伦贝尔学院 | Roadway surrounding rock support deformation testing method |
| CN217111367U (en) * | 2022-02-28 | 2022-08-02 | 河南龙宇能源股份有限公司 | Coal mine gas pressure testing device |
| CN115900634A (en) * | 2023-02-08 | 2023-04-04 | 济宁矿业集团有限公司 | Detection device and control method for deformation of top plate of roadway head-on to-be-supported area |
-
2023
- 2023-09-27 CN CN202311263463.2A patent/CN117418903B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835759A (en) * | 2012-11-21 | 2014-06-04 | 西安众智惠泽光电科技有限公司 | Monitoring device for roadway support structure |
| CN108386218A (en) * | 2018-03-12 | 2018-08-10 | 中国矿业大学 | A kind of roadway bolt pretightning force is accurately constructed and monitoring allows pressure device and application method |
| CN108590628A (en) * | 2018-06-28 | 2018-09-28 | 中国矿业大学(北京) | A kind of device and method of monitoring coal body drilling transformation-temperature-gas flow |
| CN109813465A (en) * | 2019-03-18 | 2019-05-28 | 河南理工大学 | A kind of roadway surrounding rock stress original position dynamic monitor and working method |
| WO2020224223A1 (en) * | 2019-05-05 | 2020-11-12 | 中国矿业大学 | Anchor rod for surrounding rock support and instability monitoring, and mounting method thereof |
| WO2021036597A1 (en) * | 2019-08-27 | 2021-03-04 | 山东科技大学 | Robot and method for intelligently monitoring and evaluating dangerous gas source in unsealing closed tunnel of coal mine |
| CN217111367U (en) * | 2022-02-28 | 2022-08-02 | 河南龙宇能源股份有限公司 | Coal mine gas pressure testing device |
| CN114777660A (en) * | 2022-03-28 | 2022-07-22 | 呼伦贝尔学院 | Roadway surrounding rock support deformation testing method |
| CN115900634A (en) * | 2023-02-08 | 2023-04-04 | 济宁矿业集团有限公司 | Detection device and control method for deformation of top plate of roadway head-on to-be-supported area |
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| CN117418903A (en) | 2024-01-19 |
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