CN111894576A - Rock drilling device and method for preventing collapse of inner surface of mine tunnel - Google Patents
Rock drilling device and method for preventing collapse of inner surface of mine tunnel Download PDFInfo
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- CN111894576A CN111894576A CN202010983322.8A CN202010983322A CN111894576A CN 111894576 A CN111894576 A CN 111894576A CN 202010983322 A CN202010983322 A CN 202010983322A CN 111894576 A CN111894576 A CN 111894576A
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- 238000005553 drilling Methods 0.000 title claims abstract description 45
- 239000011435 rock Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000008093 supporting effect Effects 0.000 claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
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- Environmental & Geological Engineering (AREA)
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- Earth Drilling (AREA)
Abstract
The invention discloses a rock drilling device and a rock drilling method for preventing collapse of the inner surface of a mine tunnel, belonging to the technical field of mine tunnel construction, wherein the rock drilling device comprises a bracket assembly, wherein a transmission shaft is arranged on a bracket body, one end of the transmission shaft is fixedly connected with a drill rod, the other end of the transmission shaft is fixedly connected with a pushing block, and the rear end of the pushing block is provided with a driving mechanism; the anti-collapse assembly is arranged on two sides of the bracket and comprises a guide base fixedly connected with the side wall of the bracket body, and a pushing track is arranged on the guide base; the spacing clamping component is arranged on the pushing track; the movable block drives the hook rod to continuously move towards the hook groove on the upper-layer position clamping plate along with the continuous drilling of the drill rod, the stable triangular supporting structure is formed by matching the supporting rod and the rubber disc, the stability is higher along with the increase of the drilling depth, the risk of collapse in the mine is reduced, and the safety of the rock drilling operation on the inner surface of the mine is improved.
Description
Technical Field
The invention relates to the technical field of mine tunnel construction, in particular to a rock drilling device and method for preventing collapse of the inner surface of a mine tunnel.
Background
Mineral resources are very important non-renewable natural resources and are indispensable material bases on which the human society lives and develops. It is not only an important source of life data of people, but also an extremely important social production data. According to statistics, more than 95% of energy and more than 80% of industrial raw materials in China are all obtained from mineral resources. The new China is established for more than 50 years, and mineral exploration work obtains brilliant achievements, thereby exploring a large amount of mineral resources for the country and basically ensuring the needs of national economic construction. China becomes one of a few large countries with abundant total mineral resources and complete mineral species in the world.
When constructors conduct rock drilling operation in a mine, the danger of collapse is easy to occur, particularly when the constructors conduct operation on the upper surface of the mine, timely anti-collapse structures are lacked, the danger of large-area collapse of rock surfaces around a drilling position can occur, and therefore safety accidents are caused.
Disclosure of Invention
The invention aims to provide a rock drilling device and a rock drilling method for preventing collapse of the inner surface of a mine tunnel, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a rock drilling device for preventing collapse of the inner surface of a mine comprises,
the bracket assembly comprises a bracket body, wherein a transmission shaft is arranged on the bracket body, one end of the transmission shaft is fixedly connected with a drill rod, the other end of the transmission shaft is fixedly connected with a pushing block, and a driving mechanism is arranged at the rear end of the pushing block;
the anti-collapse assembly is arranged on two sides of the bracket body and comprises a guide base fixedly connected with the side wall of the bracket body, and a pushing track is arranged on the guide base;
the interval screens subassembly, the interval screens subassembly is located on the propelling movement track.
Further, the propelling movement piece both ends run through bracket body lateral wall and with collide a piece fixed connection, bracket body surface has seted up the direction side opening.
Further, the anti-collapse assembly further comprises a hollow supporting pipe fitting arranged on the pushing track, the hollow supporting pipe fitting is movably arranged on the pushing track, two groups of supporting rods are movably inserted into one end of the hollow supporting pipe fitting, the end portions of the supporting rods are fixedly connected with rubber discs, steel wires are uniformly arranged on the inner surfaces of the rubber discs, and piston push rods are movably inserted into the other ends of the hollow supporting pipe fitting.
Furthermore, the hollow support pipe fitting is of a bent Y-shaped structure, an air cavity is formed in the inner cavity of the hollow support pipe fitting, an air passage communicated with the hollow support pipe fitting is formed in the inner cavity of the support rod, and the piston push rod is fixedly connected with a movable block at the end part of the outer side of the hollow support pipe fitting.
Further, interval screens subassembly is including the activity locate the movable block towards the pothook pole of bracket lateral wall, the arc wall has been seted up to the movable block inner chamber, be equipped with reset spring in the arc wall, reset spring one end is connected with the lug that pothook pole integrated into one piece set up, the movable block top surface is equipped with limit stop.
Further, the movable block bottom surface fixed connection butt piece, butt piece bottom surface fixed connection expanding spring, just the butt piece activity is located in the guide way, the guide way is seted up on the propelling movement track.
Further, the propelling movement track is equipped with spacing subassembly towards bracket one side, spacing subassembly includes rectangular frame, the last screens board that is equipped with of rectangular frame, evenly set up the pothook groove with pothook pole looks adaptation on the screens board, just screens board both ends are equipped with vertical hydro-cylinder and horizontal hydro-cylinder respectively, screens board both ends are equipped with the connecting piece, L type recess has been seted up to the rectangular frame inner wall.
Furthermore, be equipped with supplementary supporting component on the hollow support pipe fitting, supplementary supporting component includes the anchor strut with hollow support pipe fitting fixed connection, anchor strut one end activity is pegged graft in empty pipe inner chamber, empty pipe passes through the air duct and is connected with hollow support pipe fitting inner chamber.
A method of a rock drilling device for preventing collapse of the inner surface of a mine tunnel specifically comprises the following steps,
s1: driving a drill rod above the inner surface of the mine tunnel through a driving mechanism to perform rock drilling operation, wherein when the drill rod intermittently drills upwards along a bracket, a collision block impacts a butting block along with the intermittent, and the impact force enables a movable block to move upwards along a pushing guide rail;
s2: when the movable block moves, the clamping hook rod rotates downwards and is separated from the clamping hook groove on the current clamping plate, and after the movable block moves upwards for a certain distance, the clamping hook rod is reset under the action of the reset spring and is clamped in the clamping hook groove at the upper position again;
s3: the movable block moves synchronously to push the piston rod to move upwards in the hollow supporting pipe fitting to compress air in an inner cavity of the hollow supporting pipe fitting, so that the rubber disc is tightly attached to the inner surface of the mine tunnel, and a supporting effect is formed on the inner surface of the mine tunnel around the drill rod;
s4: along with the continuous drilling of drilling rod, the pothook pole along with the card in the pothook inslot of higher position, corresponding hollow support pipe fitting synchronous movement, cooperation bracing piece and rubber disc form stable triangle bearing structure, and along with the degree of depth increase that creeps into, stability is higher, after the drilling is finished, can withdraw from the drilling rod in advance, according to the structural strength of ore way internal surface, whether select to add extra supporting construction and avoid the problem of preventing collapsing.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, as the drill rod continuously drills, the movable block drives the hook rod to continuously move towards the hook groove on the upper-layer position clamping plate, the corresponding hollow supporting pipe fitting synchronously moves, a stable triangular supporting structure is formed by matching the supporting rod and the rubber disc, the stability is higher as the drilling depth is increased, the drill rod can be withdrawn in advance after the drilling is finished, whether an additional supporting structure is additionally arranged or not is selected according to the structural strength of the inner surface of the mine tunnel to avoid the problem of collapse prevention, after the additional supporting structure is placed, the clamping plate retracts through the transverse oil cylinder and the longitudinal oil cylinder, the movable block drives the hook rod to reset to the initial position under the action of the telescopic spring, the risk of collapse in the mine tunnel is reduced, and the safety of rock drilling operation on the inner surface of the mine tunnel is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged cross-sectional view of the structure of FIG. 1 at A according to the present invention;
FIG. 3 is a schematic view of a spacing assembly according to the present invention;
fig. 4 is a schematic cross-sectional structure diagram of the movable block of the present invention.
In the figure: 100. a bracket assembly; 101. a bracket body; 102. a drive shaft; 103. a drill stem; 104. a pushing block; 105. a drive mechanism; 106. a collision block; 200. an anti-collapse assembly; 201. a guide base; 202. pushing the rail; 203. a hollow support tube; 204. a support bar; 205. a rubber disc; 206. a steel wire; 207. a piston push rod; 208. a movable block; 300. an interval clamping component; 301. a hook rod; 302. a limit stop block; 303. an arc-shaped slot; 304. a return spring; 305. a butting block; 306. a tension spring; 307. a guide groove; 400. a limiting component; 401. a rectangular frame; 402. a clamping plate; 403. an L-shaped groove; 404. a connecting member; 405. a longitudinal oil cylinder; 406. a transverse oil cylinder; 500. an auxiliary support assembly; 501. a reinforcing rod; 502. empty pipe; 503. an air duct.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a rock drilling device for preventing collapse of an inner surface of a mine tunnel, including a bracket assembly 100, including a bracket body 101, wherein a transmission shaft 102 is disposed on the bracket body 101, one end of the transmission shaft 102 is fixedly connected to a drill rod 103, the other end of the transmission shaft 102 is fixedly connected to a pushing block 104, and a driving mechanism 105 is disposed at the rear end of the pushing block 104; the anti-collapse assembly 200 is arranged on two sides of the bracket body 101, the anti-collapse assembly 200 comprises a guide base 201 fixedly connected with the side wall of the bracket body 101, and a pushing rail 202 is arranged on the guide base 201; the spacing clamping assembly 300 is arranged on the pushing track 202, and the spacing clamping assembly 300 is arranged on the pushing track 202.
Referring to fig. 2, two ends of the pushing block 104 penetrate through the sidewall of the bracket body 101 and are fixedly connected to the collision block 106, and a guiding-side opening is formed on the surface of the bracket body 101.
Referring to fig. 2, the anti-collapse assembly 200 further includes a hollow supporting tube 203 disposed on the pushing rail 202, an inner cavity of the hollow supporting tube 203 is an air cavity, the hollow supporting tube 203 is movably disposed on the pushing rail 202, and two sets of supporting rods 204 are movably inserted into one end of the hollow supporting tube 203, ends of the supporting rods 204 are fixedly connected to a rubber disc 205, when the hollow supporting tube 203 moves along the pushing rail 202, the supporting rods 204 can be synchronously driven to drive the rubber disc 205 to abut against an inner surface of the mine shaft, and the supporting rods 204 can provide stronger support for the inner surface of the mine shaft along with the continuous movement of the hollow supporting tube 203, steel wires 206 are uniformly disposed on the inner surface of the rubber disc 205, the steel wires 206 are disposed to improve the structural strength of the rubber disc 205, a piston rod 207 is movably inserted into the other end of the hollow supporting tube 203, the piston rod 207 can compress air, thereby causing the support rod 204 to move accordingly.
Referring to fig. 2, the hollow supporting pipe 203 is a bent Y-shaped structure, an air cavity is disposed in an inner cavity of the hollow supporting pipe 203, an air passage communicated with the hollow supporting pipe 203 is disposed in an inner cavity of the supporting rod 204, when the rubber disc 205 abuts against an inner surface of a mine shaft, air in the hollow supporting pipe 203 is exhausted, the supporting rod 204 does not move, and after the air in the rubber disc 205 is exhausted, a blocked air cavity is formed, so that the hollow supporting pipe 203 moves to drive the supporting rod 204 to move, a stable supporting function is provided, and the end of the piston rod 207 disposed on the outer side of the hollow supporting pipe 203 is fixedly connected with a movable block 208.
Referring to fig. 2 and 4, the spacing clip assembly 300 includes a hook rod 301 movably disposed on the movable block 208 facing the side wall of the bracket, an arc-shaped groove 303 is disposed in the inner cavity of the movable block 208, a return spring 304 is disposed in the arc-shaped groove 303, one end of the return spring 304 is connected to a protrusion integrally formed with the hook rod 301, when the movable block 208 moves along the pushing track 202, when the hook rod 301 moves into the upper hook groove, the hook rod 301 is in a downward rotation state, until the hook rod moves into the upper hook groove, the return spring 304 drives the hook rod 301 to reset, and contacts with the hook groove, forming a stable connection function, and a limit stop 302 is disposed on the top surface of the movable block 208.
Referring to fig. 2, the bottom surface of the movable block 208 is fixedly connected to the abutting block 305, the bottom surface of the abutting block 305 is fixedly connected to the telescopic spring 306, the telescopic spring 306 is used for assisting the movable block 208 to slowly return to the initial position after the position of the hook lever 301 is cancelled by the position-limiting plate 402, the abutting block 305 is movably disposed in the guide groove 307, and the guide groove 307 is disposed on the pushing track 202.
Referring to fig. 2 and 3, a limiting assembly 400 is disposed on one side of the pushing track 202 facing the bracket, the limiting assembly 400 includes a rectangular frame 401, a clamping plate 402 is disposed on the rectangular frame 401, a hook slot adapted to the hook rod 301 is uniformly disposed on the clamping plate 402, the hook rod 301 is clamped in the hook slot at a higher position along with the continuous drilling of the drill rod 103, the corresponding hollow supporting pipe 203 moves synchronously, the supporting rod 204 and the rubber disc 205 form a stable triangular supporting structure, and the hook rod 301 is clamped in the hook slot at an upper layer along with the increase of the drilling depth, so that the stability is higher, the two ends of the clamping plate 402 are respectively disposed with a longitudinal cylinder 405 and a transverse cylinder 406, the two ends of the clamping plate 402 are disposed with connectors 404, the inner wall of the rectangular frame 401 is disposed with an L-shaped groove 403, after the drilling is finished, the drill rod 103 can be withdrawn in advance, and according to the structural strength, whether an additional supporting structure is additionally arranged or not is selected to avoid the problem of collapse prevention, after the additional supporting structure is placed, the clamping plate 402 retracts through the transverse oil cylinder 406 and the longitudinal oil cylinder 405, and the movable block 208 drives the hook rod 301 to reset to the initial position under the action of the telescopic spring 306, so that the risk of collapse in the mine is reduced, and the safety of rock drilling operation on the inner surface of the mine is improved.
Referring to fig. 1, an auxiliary support assembly 500 is disposed on the hollow support tube 203, the auxiliary support assembly 500 includes a reinforcing rod 501 fixedly connected to the hollow support tube 203, when air in the hollow support tube 203 is compressed, air in the hollow tube 502 is compressed synchronously, so that the reinforcing rod 501 moves synchronously with the hollow support tube 203, and provides effective reinforcing support for the hollow support tube 203, one end of the reinforcing rod 501 is movably inserted into an inner cavity of the hollow tube 502, and the hollow tube 502 is connected to the inner cavity of the hollow support tube 203 through an air duct 503.
A method of a rock drilling device for preventing collapse of the inner surface of a mine tunnel specifically comprises the following steps,
s1: driving the drill rod 103 by the driving mechanism 105 to drill the rock above the inner surface of the mine, wherein the collision block 106 intermittently collides with the abutting block 305 as the drill rod 103 intermittently drills upwards along the carriage, and the impact force causes the movable block 208 to move upwards along the push guide rail;
s2: when the movable block 208 moves, the hook lever 301 rotates downwards and is separated from the current hook groove on the clamping plate 402, and after the movable block 208 moves upwards for a certain distance, the hook lever 301 is reset under the action of the reset spring 304 and is clamped in the hook groove at the upper position again;
s3: the moving of the movable block 208 synchronously pushes the piston rod to move upwards in the hollow support pipe 203, and air in the inner cavity of the hollow support pipe is compressed, so that the rubber disc 205 is tightly attached to the inner surface of the mine tunnel, and a supporting effect is formed on the inner surface of the mine tunnel around the drill rod 103;
s4: along with the continuous drilling of the drill rod 103, the hook rod 301 is clamped in the hook groove at a higher position, the corresponding hollow supporting pipe 203 synchronously moves, the supporting rod 204 and the rubber disc 205 are matched to form a stable triangular supporting structure, the stability is higher along with the increase of the drilling depth, the drill rod 103 can be withdrawn in advance after the drilling is finished, and whether an additional supporting structure is additionally arranged or not is selected to avoid the problem of collapse prevention according to the structural strength of the inner surface of the mine tunnel.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a rock drilling device that mine way internal surface prevented collapsing which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the bracket assembly (100) comprises a bracket body (101), a transmission shaft (102) is arranged on the bracket body (101), one end of the transmission shaft (102) is fixedly connected with a drill rod (103), the other end of the transmission shaft (102) is fixedly connected with a pushing block (104), and a driving mechanism (105) is arranged at the rear end of the pushing block (104);
the anti-collapse device comprises anti-collapse components (200), wherein the anti-collapse components (200) are arranged on two sides of a bracket body (101), the anti-collapse components (200) comprise guide bases (201) fixedly connected with the side wall of the bracket body (101), and pushing tracks (202) are arranged on the guide bases (201);
the spacing clamping assembly (300) is arranged on the pushing track (202).
2. A rock drilling device for preventing collapse of an inner surface of a mine tunnel according to claim 1, wherein: both ends of the pushing block (104) penetrate through the side wall of the bracket body (101) and are fixedly connected with the impact block (106), and a guide side opening is formed in the surface of the bracket body (101).
3. A rock drilling device for preventing collapse of an inner surface of a mine tunnel according to claim 1, wherein: prevent subassembly (200) that collapses still including locating hollow support pipe fitting (203) on propelling movement track (202), hollow support pipe fitting (203) activity is located on propelling movement track (202), just hollow support pipe fitting (203) one end activity is pegged graft and is had two sets of bracing pieces (204), bracing piece (204) tip fixed connection rubber disc (205), rubber disc (205) internal surface evenly is equipped with steel wire (206), hollow support pipe fitting (203) other end activity is pegged graft and is had piston push rod (207).
4. A rock drilling device for preventing collapse of an inner surface of a mine tunnel according to claim 3, wherein: the hollow supporting pipe fitting (203) is of a bent Y-shaped structure, an air cavity is formed in the inner cavity of the hollow supporting pipe fitting (203), an air passage communicated with the hollow supporting pipe fitting (203) is formed in the inner cavity of the supporting rod (204), and the piston push rod (207) is arranged at the end part of the outer side of the hollow supporting pipe fitting (203) and is fixedly connected with a movable block (208).
5. A rock drilling apparatus for preventing collapse of an inner surface of a mine tunnel according to claim 4, wherein: spacing screens subassembly (300) are located movable block (208) towards hook rod (301) of bracket lateral wall including the activity, arc wall (303) have been seted up to movable block (208) inner chamber, be equipped with reset spring (304) in arc wall (303), reset spring (304) one end is connected with the lug that hook rod (301) integrated into one piece set up, movable block (208) top surface is equipped with limit stop (302).
6. A rock drilling apparatus for preventing collapse of an inner surface of a mine tunnel according to claim 5, wherein: the movable block (208) is fixedly connected with a butt block (305) on the bottom surface, the butt block (305) is fixedly connected with a telescopic spring (306) on the bottom surface, the butt block (305) is movably arranged in a guide groove (307), and the guide groove (307) is arranged on the pushing track (202).
7. A rock drilling apparatus for preventing collapse of an inner surface of a mine tunnel according to claim 6, wherein: propelling movement track (202) are equipped with spacing subassembly (400) towards bracket one side, spacing subassembly (400) include rectangular frame (401), be equipped with screens board (402) on rectangular frame (401), evenly set up the pothook groove with pothook pole (301) looks adaptation on screens board (402), just screens board (402) both ends are equipped with vertical hydro-cylinder (405) and horizontal hydro-cylinder (406) respectively, screens board (402) both ends are equipped with connecting piece (404), L type recess (403) have been seted up to rectangular frame (401) inner wall.
8. A rock drilling apparatus for preventing collapse of an inner surface of a mine tunnel according to claim 4, wherein: the hollow support pipe fitting (203) is provided with an auxiliary support assembly (500), the auxiliary support assembly (500) comprises a reinforcing rod (501) fixedly connected with the hollow support pipe fitting (203), one end of the reinforcing rod (501) is movably inserted into the inner cavity of the hollow pipe (502), and the hollow pipe (502) is connected with the inner cavity of the hollow support pipe fitting (203) through an air duct (503).
9. A method of rock drilling apparatus for preventing collapse of an interior surface of a mine shaft according to any one of claims 1 to 8, wherein: the method specifically comprises the following steps of,
s1: driving the drill rod (103) above the inner surface of the mine shaft for rock drilling operation through the driving mechanism (105), wherein as the drill rod (103) intermittently drills upwards along the bracket, the impact block (106) intermittently impacts the abutting block (305), and the impact force enables the movable block (208) to move upwards along the push guide rail;
s2: when the movable block (208) moves, the hook rod (301) rotates downwards and is separated from the current hook groove on the clamping plate (402), and after the movable block (208) moves upwards for a certain distance, the hook rod (301) is reset under the action of the reset spring (304) and is clamped in the hook groove at the upper position again;
s3: the movable block (208) moves synchronously to push the piston rod to move upwards in the hollow supporting pipe fitting (203) and compress air in an inner cavity of the hollow supporting pipe fitting, so that the rubber disc (205) is tightly attached to the inner surface of the mine tunnel, and a supporting effect is formed on the inner surface of the mine tunnel around the drill rod (103);
s4: along with the continuous drilling of the drill rod (103), the hook rod (301) is clamped in a hook groove at a higher position along with the drill rod, the corresponding hollow supporting pipe (203) moves synchronously, a stable triangular supporting structure is formed by matching the supporting rod (204) and the rubber disc (205), the stability is higher along with the increase of the drilling depth, the drill rod (103) can be withdrawn in advance after the drilling is finished, and whether an additional supporting structure is additionally arranged or not is selected to avoid the collapse prevention problem according to the structural strength of the inner surface of the mine tunnel.
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| CN202010983322.8A CN111894576B (en) | 2020-09-18 | 2020-09-18 | Rock drilling device and method for preventing collapse of inner surface of mine tunnel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117266930A (en) * | 2023-11-17 | 2023-12-22 | 山西省水利建筑工程局集团有限公司 | Water conservancy tunnel construction water shutoff device that gushes |
| CN117266930B (en) * | 2023-11-17 | 2024-02-20 | 山西省水利建筑工程局集团有限公司 | Water conservancy tunnel construction water shutoff device that gushes |
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| Publication number | Publication date |
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| CN111894576B (en) | 2022-07-22 |
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