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Gas extraction device for mine drill hole plugging and working method of gas extraction device

A working method and gas technology, used in gas discharge, safety devices, mining equipment, etc., can solve the problems of poor sealing quality, poor grouting, and poor sealing, and achieve good extraction effect, convenient operation, and sealing. tight blocking effect

Pending Publication Date: 2022-04-29
陕西陕煤韩城矿业有限公司
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AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a gas extraction device and its working method for mining borehole plugging, so as to solve the problems of poor sealing quality, lax plugging and unrealistic grouting caused by single return pipe in the prior art

Method used

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  • Gas extraction device for mine drill hole plugging and working method of gas extraction device

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] The invention provides a gas extraction device for mining borehole plugging, such as figure 1 As shown, it includes a sealing pipe 2 for placing in the depth of the borehole 1, and the sealing pipe 2 uses a PVC pipe. The sealing tube 2 is respectively sleeved with a bladder A31 and a bladder B32 at an interval of 10 m. Both the bladder A31 and the bladder B32 are of hollow elastic structure; a grouting tube 10 is also included, which runs through the bladder B32 and extends to the bladder. Inside the bag A31; also includes a deep slurry return pipe 5, one end of which is placed at a distance of 10.5m from the capsule bag A31, and one end is located outside the borehole 1; a shallow slurry return tube 6 is also included, and one end of which is located 20.5m beyond the capsule bag B32 , with one end outside borehole 1. The grouting se...

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Abstract

The invention discloses a mine drill hole plugging gas extraction device and a working method thereof.The device comprises a hole sealing pipe used for being placed in the deep position of a drill hole, the hole sealing pipe is sleeved with a bag A and a bag B at the interval of 10 m, and the bag A and the bag B are each of a hollow elastic structure; the grouting pipe penetrates through the bag B and extends into the bag A; one end of the deep slurry return pipe is arranged at the position 0.5 m away from the bag A, and the other end of the deep slurry return pipe is located outside the drill hole; one end of the shallow slurry return pipe is located at the position 0.5 m higher than the bag B, and the other end of the shallow slurry return pipe is located outside the drill hole. The problems that in the prior art, due to the fact that a single backflow pipe is adopted, hole sealing quality is poor, sealing is not tight, and grouting is not solid are solved.

Description

technical field [0001] The invention belongs to the technical field of mine grouting devices, and in particular relates to a gas extraction device for plugging a mine borehole and a working method thereof. Background technique [0002] Existing mines usually use a single return pipe for backflow. During grouting, when the return pipe starts to return to the grout, it is judged that the grouting is complete. The grout began to return, resulting in poor sealing quality, lax plugging, inaccurate grouting, and frequent air leakage, which reduced the extraction concentration and failed to meet the needs of efficient mine disaster management. During the mining process, safety hazards and accidents such as excessive gas and overruns are prone to occur. Contents of the invention [0003] The purpose of the present invention is to provide a gas extraction device and its working method for mining borehole plugging, so as to solve the problems of poor sealing quality, lax plugging a...

Claims

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Application Information

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IPC IPC(8): E21B33/13E21F7/00
CPCE21B33/13E21F7/00
Inventor 程瑞王贵军贾振宁邸广强宋朝晖
Owner 陕西陕煤韩城矿业有限公司
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