Method for blocking water burst of high-pressure drill holes of underground fault fracture zone

A broken zone and water gushing technology, applied in drilling equipment and methods, drainage, directional drilling, etc., can solve the problems of high operational risk, poor drainage effect, poor grouting effect, etc., to improve construction efficiency and precise drilling control , The effect of reducing construction risks

Active Publication Date: 2020-10-13
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for plugging water gushing in high-pressure boreholes in downhole fault fracture zones, using downhole directional drilling technology to block water gushing in high-pressure boreholes in fault fracture zon

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  • Method for blocking water burst of high-pressure drill holes of underground fault fracture zone

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[0043] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0044] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprises" and or "comprises" are used in this specification, it means that there are Features, steps, operations and or combinations thereof.

[0045] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodim...

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Abstract

The invention discloses a method for blocking water burst of high-pressure drill holes of an underground fault fracture zone. An underground directional drilling technology is utilized to block waterburst of the high-pressure drill holed in the fault fracture zone, the problem that water burst drill holes are difficult to expose in conventional drilling drainage holes can be effectively solved, and the construction efficiency can be improved; and meanwhile, a safe area is selected to construct remote directional drainage holes so that an operator can be prevented from being exposed to a high-water-pressure and broken surrounding rock construction area by an in-hole intubation drainage grouting method, and the construction risk of the operator is effectively reduced. According to the method, the hole distribution mode comprehensively considers surrounding rock mass reinforcement and water gushing drilling drainage, meanwhile, the underground directional drilling technology with high drilling efficiency and accurate drilling control is utilized, so that the defects of complex procedures, long construction period and large number of drilled holes of drilling and grouting engineeringfor constructing conventional reinforcement holes are effectively overcome.

Description

technical field [0001] The invention relates to an underground borehole water gushing plugging technology, belongs to the technical field of coal mine water prevention and groundwater resource protection, and in particular relates to a method for plugging a high-pressure borehole water gushing in an underground fault fracture zone. Background technique [0002] Water gushing from underground boreholes is a major type of coal mine water hazard. For the types of underground borehole water hazards, the commonly used plugging and control technologies include retaining wall grouting, static pressure grouting, and drainage grouting. The treatment methods have their own advantages and disadvantages: the retaining wall grouting method is characterized by safety and reliability, but it needs to seal the roadway, which requires a large amount of work and a long construction period; To compress and break the surrounding rock, it is necessary to reinforce the surrounding rock before gro...

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Application Information

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IPC IPC(8): E21B33/13E21F16/02E21B7/04E21B43/30
CPCE21B33/13E21F16/02E21B7/046E21B43/305
Inventor 薛建坤王皓赵春虎杨建尚宏波孙洁董兴玲王强民
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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