CN113818927A - Rock burst prevention and control device with energy guide function - Google Patents
Rock burst prevention and control device with energy guide function Download PDFInfo
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- CN113818927A CN113818927A CN202111198048.4A CN202111198048A CN113818927A CN 113818927 A CN113818927 A CN 113818927A CN 202111198048 A CN202111198048 A CN 202111198048A CN 113818927 A CN113818927 A CN 113818927A
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- 239000011435 rock Substances 0.000 title claims abstract description 42
- 230000002265 prevention Effects 0.000 title claims abstract description 9
- 239000003245 coal Substances 0.000 claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims description 35
- 238000003825 pressing Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000005422 blasting Methods 0.000 abstract description 11
- 238000005553 drilling Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- 238000010276 construction Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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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
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- 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
- E21F17/18—Special adaptations of signalling or alarm devices
- E21F17/185—Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
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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)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a rock burst prevention and control device with an energy guiding function, and mainly relates to the field of coal field geological exploration. Rock burst prevention and cure device with energy guide function, including the middle part support, bolt fixed mounting bottom plate is used respectively to middle part support both sides, every fixed mounting has two supporting seats on the bottom plate, rotate the installation sensor base on the supporting seat, fixed mounting corner sensor one on the sensor base, the installation preceding rocking arm rotates on the corner sensor one, preceding rocking arm front end sets up corner sensor two. The invention has the beneficial effects that: the invention can monitor the stress of the coal bed or the rock stratum in the region with high impact ground pressure and dangerous grade in real time, and can send out early warning information when the stress concentration change exceeds a preset value, and workers can timely perform energy guide release on the stress concentration region in modes of blasting pressure relief, drilling pressure relief, induced blasting and the like according to the early warning information, thereby effectively avoiding the occurrence of rock burst.
Description
Technical Field
The invention mainly relates to the field of coal field geological exploration, in particular to a rock burst prevention and control device with an energy guiding function.
Background
Rock burst disasters are also known as blast disasters (coal bursts) in coal mines. Under the action of internal high stress, the ore body or rock mass is damaged in a balanced state, a large amount of energy is suddenly released, explosion vibration occurs, and the ore body and rock on the peripheral wall of the roadway are suddenly sprayed out to cause disasters. The reason for the occurrence of rock burst is mainly the result of instantaneous release of elastic deformation potential energy accumulated in coal rock mass beyond its bearing capacity.
The technologies for controlling rock burst can be broadly divided into 3 types:
firstly, a mining optimization design method is adopted to avoid rock burst, and the mining optimization design method comprises optimization development arrangement, liberation layer mining, coal pillar-free mining, pre-excavation pressure relief roadway, wide roadway tunneling, wide roadway pillar retaining method and the like;
secondly, danger relieving is carried out on an area with an impact danger, high stress concentration is avoided, the property of a coal rock body medium is improved, and the capacity of accumulating elastic energy is weakened, wherein the capacity comprises top plate deep hole blasting, coal bed unloading blasting, coal bed high-pressure water injection, a large hole pressure relief method, a directional hydraulic fracturing method, high-pressure water jet grooving, bottom breaking blasting, pre-digging pressure relief chamber, coal bed high-pressure hydraulic fracturing, a bottom plate grooving method and the like;
thirdly, a more effective supporting method is adopted, the impact resistance of the supporting body is improved by increasing the supporting strength or improving the supporting mode, and the method is a passive protection method, such as a rigid-flexible energy storage supporting method of impact vibration roadway surrounding rock, a high-prestress and strong-strength anchor rod U-shaped steel supporting method, a portal hydraulic support (or stack type hydraulic support) method, a constant-resistance large-deformation anchor rod (cable) supporting method and the like
Through trial and practice, the method for relieving danger of the area with the impact danger, avoiding high stress concentration and improving the property of the coal-rock mass medium to weaken the capacity of accumulating elastic energy is most rapid and effective, but the industry lacks a device capable of monitoring the stress change condition of each dangerous area in real time so as to guide energy release and relieve stress concentration to prevent rock burst.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the rock burst prevention and control device with the energy guide function, which can monitor the stress of the coal bed or the rock stratum in the region with high impact ground pressure and dangerous grade in real time, and can send out early warning information when the stress concentration changes beyond a preset value, and workers can timely perform energy guide release on the stress concentration region in modes of blasting pressure relief, drilling pressure relief, induced blasting and the like according to the early warning information, so that the rock burst is effectively avoided, and the construction safety is ensured.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a rock burst prevention and cure device with energy guide function, includes the middle part support, bolt fixed mounting bottom plate, every are used respectively to middle part support both sides fixed mounting has two supporting seats on the bottom plate, rotate the installation sensor base on the supporting seat, fixed mounting corner sensor one on the sensor base, rotate the preceding rocking arm of installation on the corner sensor one, preceding rocking arm front end sets up corner sensor two, rotate installation back rocking arm on the corner sensor two, back rocking arm outer end is rotated installation monitoring lever anchor clamps, use bolt fixed mounting controller on the support of middle part, be provided with fixed sleeve on the controller.
The stress monitoring rod is clamped in the monitoring rod clamp, and the fixing sleeve is connected with the fixing rod through threads.
The fixed rod is fixedly installed in a rock stratum of a coal mine, when the device is connected to the fixed rod through the fixed sleeve, the supporting seat is pressed on the rock stratum, and the stress monitoring rod and the fixed rod are installed in the rock stratum at a certain included angle.
The monitoring rod clamp structure comprises a hinged plate, two ends of the hinged plate are respectively provided with a fixed clamping block through bolts, two ends of the fixed clamping block are respectively and rotatably connected with a movable clamping block, and the movable clamping block is provided with a pressing buckle.
And a pressure stress sensor is arranged in the stress monitoring rod.
In the device, four groups of the supporting seat, the sensor base, the first corner sensor, the front rocker arm, the second corner sensor, the rear rocker arm, the monitoring rod clamp and the stress monitoring rod are arranged, and the first corner sensor and the second corner sensor are electrically connected with the controller.
The controller can acquire the information of the first rotation angle sensor and the second rotation angle sensor in real time, and the stress change in the current area can be calculated after operation.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the information of each corner sensor can be acquired in real time through the controller, the stress change in the current area is calculated after calculation, the coal seam or rock stratum stress of the impact high-ground-pressure high-risk-level area is monitored in real time, early warning information is sent out when the stress concentration change exceeds a preset value, and workers can timely perform energy-guided release on the stress concentration area in modes of blasting pressure relief, drilling pressure relief, induced blasting and the like according to the early warning information, so that the occurrence of rock burst is effectively avoided, and the construction safety is ensured.
Drawings
FIG. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is a partially enlarged structural view of part A of the present invention;
FIG. 3 is a partially enlarged view of the part B of the present invention.
Reference numerals shown in the drawings: 1. a middle support; 2. a base plate; 3. a supporting seat; 4. a sensor base; 5. a first rotation angle sensor; 6. a front rocker arm; 7. a second rotation angle sensor; 8. a rear rocker arm; 9. a monitoring rod clamp; 10. a controller; 11. fixing the sleeve; 12. a stress monitoring rod; 13. fixing the rod; 91. a hinge plate; 92. fixing the clamping block; 93. a movable clamping block; 94. pressing and fastening; 120. a compressive stress sensor.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
With reference to the accompanying drawings 1-3, the rock burst prevention and treatment device with the energy guiding function comprises a middle support 1, wherein a bottom plate 2 is fixedly installed on two sides of the middle support 1 through bolts respectively, each bottom plate 2 is fixedly provided with two supporting seats 3, a sensor base 4 is rotatably installed on each supporting seat 3, a corner sensor 5 is fixedly installed on each sensor base 4, a front rocker arm 6 is rotatably installed on each corner sensor 5, a corner sensor II 7 is arranged at the front end of each front rocker arm 6, a rear rocker arm 8 is rotatably installed on each corner sensor II 7, a monitoring rod clamp 9 is rotatably installed at the outer end of each rear rocker arm 8, a controller 10 is fixedly installed on the middle support 1 through bolts, and a fixing sleeve 11 is arranged on each controller 10.
The stress monitoring rod 12 is clamped in the monitoring rod clamp 9, and the fixing sleeve 11 is connected with the fixing rod 13 through threads.
The fixed rod 13 is fixedly installed in a rock stratum of a coal mine, when the device is connected to the fixed rod 13 through the fixed sleeve 11, the supporting seat 3 is pressed on the rock stratum, and the stress monitoring rod 12 and the fixed rod 13 are installed in the rock stratum at a certain included angle.
The monitoring rod clamp 9 structure comprises a hinged plate 91, fixed clamping blocks 92 are respectively installed at two ends of the hinged plate 91 through bolts, movable clamping blocks 93 are respectively connected to two ends of each fixed clamping block 92 in a rotating mode, and a pressing buckle 94 is arranged on each movable clamping block 93.
A compressive stress sensor 120 is arranged in the stress monitoring rod 12.
In the device, four groups of the supporting seat 3, the sensor base 4, the first corner sensor 5, the front rocker arm 6, the second corner sensor 7, the rear rocker arm 8, the monitoring rod clamp 9 and the stress monitoring rod 12 are arranged, and the first corner sensor 5 and the second corner sensor 7 are electrically connected with the controller 10.
The controller 10 can acquire information of the first rotation angle sensor 5 and the second rotation angle sensor 7 in real time, and stress change in the current area can be calculated after calculation. The monitoring principle of the device is as follows: the volume of the coal seam or the rock stratum can be slightly changed after the coal seam or the rock stratum is increased by the extrusion stress, and the small change can be amplified through the monitoring rod, so that the monitoring can be better carried out.
When the device is used, firstly, the existing equipment and technology are used for conducting impact tendency identification on a construction coal field area, an area with impact tendency in the construction coal field area is determined, then impact risk evaluation is conducted on the area, the area is divided into a plurality of impact risk area grades, monitoring points are arranged at positions with high impact risk area grades, a fixing rod and a stress monitoring rod are respectively installed near the monitoring points in a punching mode, the device is installed on the fixing rod after installation is completed, then all the monitoring rod clamps are clamped on the stress monitoring rod in sequence, a controller is started to record numerical value changes of all sensors, the stress changes of a coal bed or a rock stratum in the front area can be calculated according to the numerical value changes, and when the stress concentration exceeds a certain numerical value, the controller can give out early warning; the staff can carry out energy guide release by carrying out modes such as blasting pressure relief, drilling pressure relief, blasting induction and the like on the area in a targeted manner according to the early warning information, so that the rock burst is effectively avoided.
Claims (7)
1. A rock burst prevention device with an energy guiding function comprises a middle bracket (1) and is characterized in that: middle part support (1) both sides use bolt fixed mounting bottom plate (2), every fixed mounting has two supporting seats (3) on bottom plate (2), rotate installation sensor base (4) on supporting seat (3), fixed mounting corner sensor (5) are gone up in sensor base (4), rotate preceding rocking arm of installation (6) on corner sensor (5), preceding rocking arm (6) front end sets up corner sensor two (7), rotate installation back rocking arm (8) on corner sensor two (7), back rocking arm (8) outer end rotates installation monitoring lever anchor clamps (9), use bolt fixed mounting controller (10) on middle part support (1), be provided with fixed sleeve (11) on controller (10).
2. A rock burst control device with an energy guiding function according to claim 1, characterized in that: the stress monitoring rod (12) is clamped in the monitoring rod clamp (9), and the fixing sleeve (11) is connected with the fixing rod (13) through threads.
3. A rock burst control device having an energy guiding function according to claim 2, characterized in that: dead lever (13) fixed mounting is in the stratum in coal mine, when this device passes through fixed sleeve (11) and connects on dead lever (13) supporting seat (3) compress tightly on the stratum, stress monitoring pole (12) are certain contained angle with dead lever (13) and install in the stratum.
4. A rock burst control device with an energy guiding function according to claim 1, characterized in that: the monitoring rod clamp (9) structurally comprises a hinged plate (91), two ends of the hinged plate (91) are respectively provided with a fixed clamping block (92) through bolts, two ends of the fixed clamping block (92) are respectively and rotatably connected with a movable clamping block (93), and a pressing buckle (94) is arranged on the movable clamping block (93).
5. A rock burst control device having an energy guiding function according to claim 2, characterized in that: and a compressive stress sensor (120) is arranged in the stress monitoring rod (12).
6. A rock burst control device having an energy guiding function according to claim 2, characterized in that: in the device, four groups of the supporting seat (3), the sensor base (4), the first corner sensor (5), the front rocker arm (6), the second corner sensor (7), the rear rocker arm (8), the monitoring rod clamp (9) and the stress monitoring rod (12) are arranged, and the first corner sensor (5) and the second corner sensor (7) are electrically connected with the controller (10).
7. A rock burst control device with an energy guiding function according to claim 6, characterized in that: the controller (10) can acquire the information of the first rotation angle sensor (5) and the second rotation angle sensor (7) in real time, and the stress change in the current area can be calculated after calculation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198048.4A CN113818927B (en) | 2021-10-14 | 2021-10-14 | Rock burst control device with energy guiding function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198048.4A CN113818927B (en) | 2021-10-14 | 2021-10-14 | Rock burst control device with energy guiding function |
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| CN113818927A true CN113818927A (en) | 2021-12-21 |
| CN113818927B CN113818927B (en) | 2024-03-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151080A (en) * | 2022-02-10 | 2022-03-08 | 山东省煤田地质局第五勘探队 | Underground mineral mining device and mineral analysis method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151080A (en) * | 2022-02-10 | 2022-03-08 | 山东省煤田地质局第五勘探队 | Underground mineral mining device and mineral analysis method |
| CN114151080B (en) * | 2022-02-10 | 2022-04-15 | 山东省煤田地质局第五勘探队 | Underground mineral mining device and mineral analysis method |
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