Impermeable drainage construction method for complex soft rock tunnel

A construction method, anti-seepage and drainage technology, applied in tunnels, drainage, tunnel lining, etc., can solve problems such as tunnel water seepage, achieve the effects of ensuring smooth construction, reducing permanent loads, and ensuring smooth drainage

Pending Publication Date: 2022-07-12
浙江交工宏途交通建设有限公司
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Problems solved by technology

[0004] The problem to be solved by the present invention is to provide an anti-seepage and drainage construction method for complex soft rock tunnels in view of the above-mentioned shortcomings in the prior art, which solves the problem of severe water seepage inside the tunnel existing in the prior art

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  • Impermeable drainage construction method for complex soft rock tunnel
  • Impermeable drainage construction method for complex soft rock tunnel
  • Impermeable drainage construction method for complex soft rock tunnel

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Embodiment Construction

[0062] In order to make the technical means realized by the present invention, the features of creation, the achievement of the purpose and the function more clear and easy to understand, the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0063] like figure 1 and 2 As shown, the present invention proposes an anti-seepage and drainage structure for a complex soft rock tunnel, including a tunnel body 1 having a tunnel, a lane 2 for driving in the tunnel, sidewalks 3 located on both sides of the lane 2, and the sidewalk 3 A groove 4 is opened on the road surface of the tunnel, and a drainage ditch 5 is embedded in the groove 4. The drainage ditch 5 is a prefabricated resin-integrated drainage ditch 5, and the drainage ditch 5 is sequentially spliced ​​along the longitudinal direction of the tunnel body 1.

[0064] like figure 1 and 2 As shown, the tunnel body 1 includes a primary lining 11 and a seconda...

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Abstract

The invention provides an anti-seepage drainage construction method for a complex soft rock tunnel. The construction method comprises the following steps: step 1, geological survey; 2, tunnel excavation construction is carried out; 3, monitoring and measurement are conducted, specifically, dynamic monitoring and measurement are conducted on the tunnel surrounding rock, and related data of ground surface settlement, in-tunnel vault settlement, arch foot settlement and periphery convergence are collected; 4, advanced geological forecasting: advanced forecasting is carried out on surrounding rock and stratum conditions in front of and around the tunnel face by adopting an advanced drilling method; 5, well point dewatering is conducted, specifically, well point pipes directly inserted into the water storage layer are buried around the foundation pit, and underground water is continuously pumped out through the well point pipes through water pumping equipment till the underground water level is lowered to the position below the preset pit bottom; 6, advanced pre-grouting construction is conducted, specifically, drilling grouting is conducted on surrounding rock in front of and around the tunnel face, and the surrounding rock is reinforced; 7, construction of a drainage structure, wherein the drainage structure for draining underground water and surrounding rock seepage water is installed behind the tunnel face; and step 8, secondary lining construction.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a construction method for anti-seepage and drainage of complex soft rock tunnels. Background technique [0002] According to the lithology division of geology, geological soft rock refers to the general term of loose, broken, weak and weathered expansive rock mass with uniaxial compressive strength less than 25Mpa. This type of rock is mostly mudstone, shale, siltstone and argillaceous claystone and other low-strength rocks, which are naturally formed complex geological media. After the tunnel is excavated, due to the characteristics of low strength and poor self-stability of the weak surrounding rock, the stress of the weak surrounding rock will be redistributed, resulting in a larger loose circle around the tunnel. The construction of the tunnel with weak surrounding rock is more affected by the geological conditions. Obviously, the construction difficulty will be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/02E21D11/10E21D11/38
CPCE21F16/02E21D11/10E21D11/381E21D11/383
Inventor 刘朝振叶知晓孔腾张凯朱斐胡宇翔陈锋张浙斌赵杨健杨慧军谷耒王勇黄道锐胡志文胡志锐
Owner 浙江交工宏途交通建设有限公司
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