A gas extraction borehole plugging device and using method

A plugging device and gas drainage technology, which is applied in the direction of gas discharge, safety devices, mining equipment, etc., can solve the problems of plugging bags on both sides falling off, drilling holes on both sides of the plugging area collapse, etc., to achieve prevention and control The effect of drilling collapsed holes, improving the efficiency of gas drainage, and wide practicability

Active Publication Date: 2022-07-26
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0003] Technical problem: the purpose of the present invention is to solve the problems existing in the prior art, especially the problem that high-pressure grouting easily leads to the falling off of the sealing bag on both sides and the collapse of the drilled holes on both sides of the blocking area, and provides a Seed Gas Drainage Borehole Plugging Device and Application Method

Method used

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  • A gas extraction borehole plugging device and using method
  • A gas extraction borehole plugging device and using method
  • A gas extraction borehole plugging device and using method

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, one embodiment of the present invention is further described:

[0020] Figures 1 to 5 As shown, the gas drainage borehole plugging device of the present invention includes a gas drainage pipeline 4 sheathed with a 'flat spherical'-shaped plugging device 1 8-1 and a 'flat spherical'-shaped plugging device 2 8-2. The 'oblate spheroid'-shaped plugging device 1 8-1 and the 'oblate spheroid'-shaped plugging device 2 8-2 are respectively completely filled with spheroid borehole 1 3-1 and spheroid borehole 2 3-2, gas drainage pipeline 4 The upper and lower ends are provided with a grouting pipe 5 and a grouting pipe 6. One end of the grouting pipe 5 and the grouting pipe 6 passes through the 'flat ball'-shaped plugging device 1 8-1, and goes deep into the 'flat sphere'-shaped plugging device 1 8 Between -1 and the 'flat ball'-shaped blocking device 2 8-2, the other ends are respectively connected with valve 1 7-1 and valve 2 7-...

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Abstract

A gas drainage borehole plugging device and a method for using the same. The device comprises a gas drainage pipeline sheathed with a 'flat ball'-shaped plugging device 1 and a 'flat sphere'-shaped plugging device 2, and the two ends of the plugging area are flat sphere drills. Hole 1 and spheroid bore hole 2. The upper and lower ends of the gas drainage pipeline are the grouting pipeline and the grouting pipeline respectively. The other ends are respectively connected to valve one and valve two. Send the gas drainage pipeline into the borehole, so that the oblate bag 1 and the oblate bag 2 are located in the center of the oblate spheroid borehole 1 and the oblate spheroid borehole 2, respectively. 2. When the oblate sphere hole 1 and the oblate sphere hole 2 are expanded and filled, the W-shaped diaphragm of the 'oblate sphere'-shaped plugging device can support the drill holes on both sides of the plugging area, and control the valve 1 and valve 2 to move toward the Confined space grouting to achieve pressure filling and complete effective sealing of gas drainage boreholes.

Description

technical field [0001] The invention relates to a gas drainage borehole plugging device and a method for using the same, belonging to the technical field of underground gas control in coal mines. Background technique [0002] Gas extraction is the fundamental solution to the frequent occurrence of gas disasters in coal mines. The tightness of the plugging of the boreholes seriously affects the gas drainage effect, thereby increasing the risk of gas disasters. During the construction of gas drainage drilling, high-pressure grouting will easily lead to the detachment of the sealing pockets on both sides, and after the gas drainage drilling is constructed, the drilling holes on both sides of the sealing area will collapse, which will greatly reduce the drilling cost. The tightness of the hole sealing affects the gas drainage efficiency. How to solve the above problems and realize the prevention and control of the tight filling of the boreholes and the collapse of the borehole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F7/00E21B33/122E21B33/13
CPCE21F7/00E21B33/122E21B33/13
Inventor 倪冠华景茂王刚孙功帅张翔斐杜文州黄启铭
Owner SHANDONG UNIV OF SCI & TECH
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