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Device and method for active hole drilling and sealing

A sealing device and active technology, which is applied in earthwork drilling, sealing/isolation, wellbore/well parts, etc., can solve the problems of inability to seal drilling pores and fissures, etc., and achieve good sealing effect and easy operation Simple, long draw time effect

Active Publication Date: 2013-12-25
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problem: The purpose of the present invention is to provide an active drilling and sealing method with simple structure, convenient operation, low cost and good effect, aiming at the problems existing in the prior art that the newly generated pores and cracks cannot be sealed.

Method used

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  • Device and method for active hole drilling and sealing

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Embodiment Construction

[0015] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0016] exist figure 1 Among them, the active drilling and sealing device of the present invention is mainly composed of a gas extraction pipe 3, a grouting pipe 2, a grout return pipe 4, a slurry storage tank 9, an inner plugging disc 7-1, and an outer plugging disc 7-1. 2, the gas extraction pipe 3, the grouting pipe 2, the grout return pipe 4, the inner plugging disc 7-1, and the outer plugging disc 7-2 are arranged in the borehole 1, and on the grout return pipe 4 Connected to a slurry storage tank 9, the slurry storage tank 9 is provided with a sealing piston 8, and the upper part of the sealing piston 8 is provided with a gravity hammer 10; the bottom of the slurry storage tank 9 is provided with a grouting port controlled by a grouting valve 11 and a The slurry filling port controlled by valve 5. The slurry storage tank 9 is made of a transparent gl...

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Abstract

The invention discloses a device and a method for active hole drilling and sealing. The device comprises a gas extraction pipe, a grout injection pipe, a grout return pipe, an inner-block grout disk, an outer-block grout disk, a sealing piston, a gravity hammer and a grout storage tank, wherein the bottom of the grout storage tank is provided with a grout injection opening which is controlled by a grout injection valve and a grout supplementing opening which is controlled by a grout supplementing valve. An inorganic flexible paste body is injected into a drilling space between the inner-block grout disk and the outer-block grout disk through the grout injection pipe, the grout return pipe is connected with the grout storage tank when the grout return pipe is subjected to grout return, the grout injection valve can be opened, the inorganic flexible paste body can be squeezed out by applying sustained pressure to the inorganic flexible paste body in the grout storage tank by the gravity hammer, cracks added around a drilling hole can be sealed and blocked, and the active hole drilling and sealing of the drilling hole can be realized. The device and the method, which are disclosed by the invention, have the advantages that the structure is simple, the operation is convenient, the cost is low, and the using effect is good.

Description

technical field [0001] The invention relates to an active drilling and sealing method, which belongs to the field of drilling and sealing underground coal mines and regional gas control, and is especially suitable for sealing in drillings in areas where coal seam dynamic phenomena are serious and there are many cracks around drillings. Hole work. Background technique [0002] Effective sealing of gas drainage boreholes is the key to underground gas drainage in coal mines. At present, my country's coal mines generally use polyurethane, cement and other drilling and sealing materials. They mainly mix various chemical slurries by manual mixing. The extraction pipe is inserted into the extraction hole together. Or directly inject into the extraction hole through the grouting pump. After the reaction is complete, the generated drilling and sealing materials are all solid materials, and there will be a large number of pores and cracks in the body of the generated solid sealing m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/13
Inventor 翟成林柏泉倪冠华李全贵彭深
Owner CHINA UNIV OF MINING & TECH
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