Method for blocking underground water in high-water-pressure and high-flow karst tunnels

A technology with large flow and high water pressure, applied in tunnels, tunnel linings, underground chambers, etc., it can solve problems such as reducing the risks of construction and later operation, and achieve the effect of reducing risks.

Inactive Publication Date: 2017-09-12
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP
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Problems solved by technology

[0003] The purpose of the present invention is to provide a groundwater sealing method for high water pressure and large flow karst tunnels, which solves the problem of sealing and drainage of high water pressure and large flow karst tunnels, and reduces the risks of construction and later operation

Method used

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  • Method for blocking underground water in high-water-pressure and high-flow karst tunnels

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Embodiment Construction

[0010] As shown in the figure: a method for sealing groundwater in a karst tunnel with high water pressure and large flow, including the following steps:

[0011] 1. The water exploration operation combined with geophysical prospecting and drilling is used to determine the water pressure and water volume. According to the revealed tunnel water leakage situation and the geological condition data and hydrogeological data provided by the design, the water inrush situation in the east section of the tunnel water inrush is analyzed, and the method and location of geophysical prospecting and drilling are determined. Combined with the physical detection carried out, the water gushing area of ​​the tunnel will be further investigated, and the necessary drilling work will be carried out. Based on the above detection results, determine the nature of the groundwater outlet and the location and scale of the outlet layer.

[0012] 2. Carry out the diversion and drainage construction of th...

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Abstract

A method for sealing underground water in a karst tunnel with high water pressure and large flow rate, comprising the following steps: ① Using geophysical prospecting and drilling to determine the water pressure and water volume; ② Carrying out diversion construction for leaking water; ④ Random grouting reinforcement of the surrounding rock of the tunnel; ⑤ Layered sealing from near to far, top to bottom; ⑥ Sealing and sealing construction of the final water leakage point. The invention solves the plugging and drainage problems of high water pressure and large flow karst tunnels, and reduces the risks of construction and later operation.

Description

Technical field: [0001] The invention belongs to the field of tunnel construction, and in particular relates to a groundwater sealing method for high water pressure and large flow karst tunnels. Background technique: [0002] With the expansion of the railway network in the western region, especially the construction of a large number of high-speed railways, it is inevitable to build tunnels in karst areas. Under the action of high water pressure in the karst area, the design and construction of waterproof and drainage has become an important issue. Invention content: [0003] The purpose of the present invention is to provide a groundwater sealing method for high water pressure and large flow karst tunnels, which solves the problems of sealing and drainage of high water pressure and large flow karst tunnels, and reduces the risks of construction and later operation. [0004] As conceived above, the technical solution of the present invention is: a method for sealing unde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38
CPCE21D11/38
Inventor 张行道段丁丁赵国祝韩伟辉朴占华李晓林王海峰董仲飞王刚谢波高国梁赵磊乔玉海兰杰胡马俊泊纯光桑伟浪衣志勇唐少强
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP
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