Comprehensive control method for grouting in seepage damage zone of weakly cemented rock mass at the top of underground engineering

A technology of underground engineering and comprehensive control, applied in underground chambers, earthwork drilling, shaft equipment, etc., can solve problems such as secondary disasters and unsatisfactory treatment effects, improve the quality of treatment, avoid secondary geological disasters, guarantee The effect of reinforcement range and strength

Active Publication Date: 2019-01-29
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a weakly cemented rock mass seepage damage zone at the top of an underground project in order to overcome the above-mentioned existing problems in the treatment of weakly cemented rock mass seepage damage geological disasters such as unsatisfactory treatment effect and easy to cause secondary disasters. Grouting comprehensive control method

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  • Comprehensive control method for grouting in seepage damage zone of weakly cemented rock mass at the top of underground engineering
  • Comprehensive control method for grouting in seepage damage zone of weakly cemented rock mass at the top of underground engineering
  • Comprehensive control method for grouting in seepage damage zone of weakly cemented rock mass at the top of underground engineering

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[0054] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0055] The structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification for the understanding and reading of those who are familiar with this technology, and are not used to limit the conditions for the implementation of the present invention , so it has no technical substantive meaning, and any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the disclosure of the present invention without affecting the functions and objectives of the present invention. The technical content must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to lim...

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Abstract

The invention discloses a comprehensive control method for grouting in the seepage and damage area of ​​weakly cemented rock mass at the top of an underground project, which includes the combined use of geological analysis and geophysical exploration means to find out the hydrogeological conditions of the treatment area; seepage instability damage section and the affected area Support strengthening; drainage and depressurization-layered grouting control scheme design; drainage and depressurization drilling construction and layered grouting engineering implementation and dynamic adjustment; drainage and decompression holes with high pressure and large flow of flowing water sealing; strengthening enclosure Rock deformation monitoring and other steps. After adopting this construction method, through the implementation of weakly cemented rock mass reinforcement and high-pressure and large-flow water gushing plugging in layers and stages, it effectively solves the problems of long construction period and easy to cause secondary geological disasters, and improves the grouting efficiency. , creating good social and economic benefits.

Description

technical field [0001] The invention relates to a tunnel and underground engineering geological disaster control technology, in particular to a drainage and pressure reduction-layered grouting comprehensive treatment method for seepage damage areas of weakly cemented rock mass at the top of underground engineering such as tunnel roadways. Background technique [0002] The construction of underground projects such as tunnels, hydropower stations, mine roadways, etc. will inevitably pass through unfavorable geological bodies such as fault fracture zones and filled karst caves. Long-term water gushing often occurs after being exposed. The reason is that the excavation disturbance leads to the formation of plastic failure areas and free surfaces in the surrounding rock, and the penetration of groundwater causes fine particles such as clay to be carried out. At the same time, the mechanical properties of the surrounding rock gradually deteriorate, the roof subsides, and the side...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10E21D11/38E21F16/02
CPCE21D11/10E21D11/38E21F16/02
Inventor 张伟杰王喆魏久传石守桥尹会永李孝朋
Owner SHANDONG UNIV OF SCI & TECH
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