A sealing device for high-pressure water-inrush drilling

Abstract

The invention relates to the technical field of borehole plugging, and specifically discloses a hole plugging device for high-pressure water-inrush drilling, comprising a bracket, a hydraulic cylinder mounted on the bracket, a telescopic end of the hydraulic cylinder fixedly connected to a slide plate, a sleeve fixedly connected to the upper side of the slide plate, one end of the sleeve rotatably connected to a sleeve barrel, a grouting pipe arranged in the sleeve, a plurality of grouting holes arranged on the wall of the grouting pipe, a plurality of cover shells mounted on the side wall of the sleeve barrel, a box body slidably connected in the cover shell, a fixed pipe fixedly connected to one side of the box body, and the fixed pipe passing through the side wall of the cover shell. The advantages of the invention are: the hole plugging device for high-pressure water-inrush drilling provided by the invention can not only grout plug the hole to be plugged, but also grout plug the cracks formed by the hole wall of the hole to be plugged spreading outward, and the air pressure of the hole to be plugged and the cracks can be reduced during the grouting process, and the plugging liquid can be more easily filled into the gap under the action of the pressure difference, and the angle of the cover shell can be adjusted so that the cracks in different directions can be grout plugged.

Description

Technical Field

[0001] The invention relates to the technical field of borehole sealing, and in particular to a sealing device for high-pressure water inrush boreholes. Background Art

[0002] When working in underground space, we often encounter water bursting problems from high-pressure water drilling, such as poorly sealed exploration holes, frozen holes, inspection holes, etc. exposed in underground space, as well as exploration holes and inspection holes with ineffective anti-burst measures (including no anti-burst devices) during construction of underground space. If such boreholes are not blocked, on the one hand, they will affect the underground working environment and increase the burden of mine drainage; on the other hand, they will bring a large amount of water in a short period of time, posing a threat to underground space operations. In the prior art, a grouting pipe is inserted into the borehole and grouting is directly injected into the hole to achieve blocking. However, in the process of drilling with a drill bit, when the drill bit rotates at high speed, it will cause small gaps in the surrounding wall panels that spread along the hole wall to the edge. When grouting through the grouting pipe, it is difficult to pour the aggregate in the slurry into the gap. In addition, when grouting through the grouting pipe, the air in the hole and the gap will be squeezed, and the aggregate in the slurry is difficult to fill the hole and the gap, resulting in poor blocking effect. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings existing in the prior art and to propose a sealing device for high-pressure water-inrush drilling, thereby solving the problems existing in the prior art.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A sealing device for high-pressure water-inrush drilling comprises a bracket, a hydraulic cylinder is mounted on the bracket, the telescopic end of the hydraulic cylinder is fixedly connected to a slide plate, the upper side of the slide plate is fixedly connected to a sleeve, one end of the sleeve is rotatably connected to a sleeve barrel, a grouting pipe is arranged in the sleeve, a plurality of grouting holes are arranged on the wall of the grouting pipe, a plurality of cover shells are mounted on the side wall of the sleeve barrel, a box body is slidably connected inside the cover shells, a fixed pipe is fixedly connected to one side of the box body, and the fixed pipe passes through the side wall of the cover shell.

[0006] Preferably, an opening is provided at the sleeve barrel, the opening is slidably connected to the arc sleeve, and the cover shell is fixed to the arc sleeve.

[0007] Preferably, the bracket is "L"-shaped, a linear guide rail is arranged on the bracket, and the slide plate slides back and forth along the linear guide rail.

[0008] Preferably, a tripod is provided on the lower side of the bracket.

[0009] Preferably, it also includes a plurality of pumping tubes, one end of each pumping tube is provided with a pumping piston head, and an operating rod is mounted on the pumping piston head.

[0010] Preferably, the fixing tube is fixedly connected to the fixing rod via a connecting plate, the fixing rod is provided with a fixing block, the fixing block is fixedly connected to a mounting plate, a plurality of arc-shaped protrusions are provided on the mounting plate, and the arc-shaped protrusions are arranged corresponding to the operating rod.

[0011] The advantages of the present invention are as follows: the sealing device for high-pressure water-inrush drilling provided by the present invention can not only perform grouting sealing on the hole to be sealed, but also perform grouting sealing on the cracks formed by the hole wall of the hole to be sealed spreading outward, and the air pressure of the hole to be sealed and the cracks can be reduced during the grouting process, and the sealing liquid can be more easily filled into the gap under the action of the pressure difference, and the angle of the cover shell can be adjusted so that cracks in different directions can be grouted and sealed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a basic structural schematic diagram of the present invention;

[0013] Figure 2 yes Figure 1 A magnified view of part A;

[0014] Figure 3 yes Figure 1 Another perspective of the picture;

[0015] Figure 4 yes Figure 3 A magnified view of part N;

[0016] Figure 5 It is a schematic diagram of the use state of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example 1

[0018] like Figure 1-5 As shown, this embodiment discloses a sealing device for high-pressure water-inrush drilling, including a bracket 1, a tripod 100 is provided at the lower side of the bracket 1, the bracket 1 is supported by the tripod 100, and the horizontality of the bracket 1 can be adjusted. The bracket 1 is "L" shaped, a hydraulic cylinder 11 is mounted on the bracket 1, the telescopic end of the hydraulic cylinder 11 is fixedly connected to a slide plate 12, a linear guide rail 13 is provided on the bracket 1, and the slide plate 12 reciprocates along the linear guide rail 13.

[0019] The upper side of the slide plate 12 is fixedly connected to the sleeve 14, one end of the sleeve 14 is rotatably connected to the sleeve barrel 2, the sleeve 14 is coaxially arranged and connected to the sleeve barrel 2, a grouting pipe 3 is arranged in the sleeve 14, the grouting pipe 3 can slide back and forth along the sleeve 14, and a plurality of grouting holes 31 are arranged on the wall of the grouting pipe 3.

[0020] A plurality of covers 21 are mounted on the side wall of the barrel 2. An opening is provided at the barrel 2. The opening is slidably connected to the arc-shaped sleeve 20. The covers 21 are fixed to the arc-shaped sleeve 20. Such a design enables the covers 21 to rotate around the barrel 2. The cover 21 is slidably connected to the box body 28. One side of the box body 28 is fixedly connected to the fixed pipe 22. The fixed pipe 22 is fixed to the box body 28 and communicates with the box body 28. The fixed pipe 22 passes through the side wall of the cover 21.

[0021] The sealing device for high-pressure water-inrush drilling disclosed in this embodiment also includes a plurality of pumping tubes 4, one end of which is provided with a pumping piston head 41, on which an operating rod 42 is mounted, the pumping piston head 41 is a prior art, and the pumping piston head 41 can pump air from the pumping tube 4 by reciprocating swing. At the same time, in order to facilitate the operation of the pumping piston head 41, the fixed tube 22 is fixedly connected to the fixed rod 23 through a connecting plate 24, on which a fixed block 25 is mounted, on which a mounting plate 26 is fixedly connected, on which a plurality of arc-shaped protrusions 27 are mounted, and the arc-shaped protrusions 27 are arranged corresponding to the operating rod 42.

[0022] During use, the sealing device for the high-pressure water-inrush drilling of this embodiment is first set up at a designated position through the tripod 100, and then the grouting pipe 3 is passed through the casing 14 and inserted into the hole to be sealed in the underground space. At the same time, the direction of the cover shell 21 is adjusted, and the cracks spreading outward from the hole to be sealed are also covered by the cover shell 21. The slide plate 12 is pushed by the hydraulic cylinder 11, so that the cover shell 21 and the sleeve barrel 2 are close to the side wall of the underground space. In this way, the sealed holes and cracks are all in a sealed space and grouting is carried out through the grouting pipe 3. At the same time, the fixed pipe 22 and the box body 28 are driven to move by the driving device. When the box body 28 moves, the sealing liquid is filled into the box body 28 through the fixed pipe 22, thereby filling the cracks with the sealing liquid. While the crack is filled with sealing liquid, the box body 28 moves, causing the cover shell 21 to act as a piston, thereby generating suction on the cover shell 21, so that small particles of impurities and residual water in the crack can be sucked into the cover shell 21, which can make the air pressure in the crack lower than the external air pressure. Under the action of the pressure difference, the filling liquid can easily enter the crack.

[0023] Before the above process, it is necessary to insert the pumping tube 4 into the side wall 200 of the underground space. The insertion method is alternating and oblique insertion, and the pumping tube 4 is set on both sides of the crack. During the movement of the fixed tube 22, the fixed rod 23 moves along, so the fixed block 25, the mounting plate 26 and the arc-shaped protrusion 27 also move accordingly. In this way, the operating rod 42 can be reciprocated by the arc-shaped protrusion 27 during the movement, so that the pumping piston head 41 works, so that the water in the crack can be sucked out by the pumping tube 4, and the air pressure in the crack can be further reduced, which is convenient for the plugging liquid to enter. After the grouting is completed, the pumping tube 4 remains on the side wall of the underground space, and the pumping tube 4 can also act as an anchor rod to reinforce the side wall of the underground space, indirectly improving the grouting plugging effect. Of course, the redundant pumping tube 4 needs to be cut off.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing device for high-pressure water inrush drilling, characterized in that: The invention comprises a support (1), wherein a hydraulic cylinder (11) is mounted on the support (1), the telescopic end of the hydraulic cylinder (11) is fixedly connected to a slide plate (12), the upper side of the slide plate (12) is fixedly connected to a sleeve (14), one end of the sleeve (14) is rotatably connected to a sleeve barrel (2), a grouting pipe (3) is arranged in the sleeve (14), a plurality of grouting holes (31) are arranged on the pipe wall of the grouting pipe (3), a plurality of cover shells (21) are mounted on the side wall of the sleeve barrel (2), a box body (28) is slidably connected in the cover shell (21), one side of the box body (28) is fixedly connected to a fixed pipe (22), and the fixed pipe (22) passes through the side wall of the cover shell (21).

2. A sealing device for high-pressure water inrush drilling according to claim 1, characterized in that: An opening is provided at the sleeve barrel (2), the opening is slidably connected to the arc sleeve (20), and the cover shell (21) is fixed to the arc sleeve (20).

3. A sealing device for high-pressure water inrush drilling according to claim 1, characterized in that: The bracket (1) is L-shaped, a linear guide rail (13) is arranged on the bracket (1), and the slide plate (12) slides back and forth along the linear guide rail (13).

4. A sealing device for high-pressure water inrush drilling according to claim 1, characterized in that: A tripod (100) is provided on the lower side of the bracket (1).

5. The sealing device for high-pressure water inrush drilling according to claim 1, characterized in that: It also comprises a plurality of pumping tubes (4), one end of each pumping tube (4) being provided with a pumping piston head (41), and an operating rod (42) being mounted on the pumping piston head (41).

6. A sealing device for high-pressure water inrush drilling according to claim 5, characterized in that: The fixing tube (22) is fixedly connected to the fixing rod (23) via a connecting plate (24); a fixing block (25) is mounted on the fixing rod (23); the fixing block (25) is fixedly connected to a mounting plate (26); a plurality of arc-shaped protrusions (27) are mounted on the mounting plate (26); and the arc-shaped protrusions (27) are arranged corresponding to the operating rod (42).

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