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Tunnel three-dimensional waterproof and drainage system and construction technology

A construction technology, waterproof and drainage technology, applied in tunnels, drainage, tunnel lining and other directions, can solve problems such as the inability to effectively prevent groundwater from entering the tunnel, and achieve good waterproofing and drainage effects.

Inactive Publication Date: 2020-05-08
THE 1ST ENG CO LTD OF CHINA RAILWAY 25TH BUREAU GRP +3
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Problems solved by technology

[0003] However, the existing tunnel construction has always followed the basic principle of "focusing on drainage, combining anti-drainage and blockage, and adapting measures to local conditions" to prevent groundwater from entering the tunnel from undesired paths; however, it is indeed impossible to effectively prevent groundwater from entering the tunnel

Method used

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  • Tunnel three-dimensional waterproof and drainage system and construction technology
  • Tunnel three-dimensional waterproof and drainage system and construction technology
  • Tunnel three-dimensional waterproof and drainage system and construction technology

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Embodiment Construction

[0028] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0029] Such as figure 1 and figure 2 As shown, the tunnel three-dimensional waterproof and drainage system construction technology of the present invention comprises the following steps

[0030] S1: The broken and loose surrounding rock 100 close to the tunnel hole is used as the initial support 101; wherein, the initial support 101 is shotcrete, so as to play the functions of water blocking, drainage and water filtration.

[0031] S2: After the initial support 101 is constructed and before the first waterproof board 3 is laid, according to the water seepage on the surface of the initial support 101, Φ42 steel flower pipe 1 is grouted around the tunnel to ens...

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Abstract

The invention provides a tunnel three-dimensional waterproof and drainage system and a construction technology. The construction technology includes the following steps that an initial support is constructed on broken and loose surrounding rock tightly attached around a tunnel hole; phi42 steel flower tubes are constructed around the tunnel hole, and grouting and water plugging are performed; secondary lining is constructed by being tightly attached to the initial support, and the initial support and the secondary lining form a deformation joint; first waterproof boards and first drainage blind ditches are laid at the deformation joint, and hollow drainage and waterproof boards are laid by being tightly attached to the first waterproof boards; water guide and stop type back stick type rubber waterstop is laid by being tightly attached to hollow drainage and waterproof boards at the deformation joint; the deformation joint is filled with foam materials in an embedded mode and second drainage blind ditches are laid; and water guide and stop type buried-in rubber waterstop is laid at the deformation joint. The tunnel three-dimensional waterproof and drainage system and the construction technology can effectively prevent groundwater from entering the tunnel.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a tunnel three-dimensional waterproof and drainage system and construction technology. Background technique [0002] With the increase of high-speed railway tunnels in recent years, due to the needs of safety risk control, structural durability considerations, environmental protection and operational safety requirements, the tolerance of construction units and operation receiving units to the leakage of tunnel lining Also getting smaller and smaller. [0003] However, the existing tunnel construction has always followed the basic principle of "focusing on drainage, combining anti-drainage and blockage, and adapting measures to local conditions" to prevent groundwater from entering the tunnel from undesired paths; however, it is indeed impossible to effectively prevent groundwater from entering the tunnel. Contents of the invention [0004] The present invention pro...

Claims

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Application Information

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IPC IPC(8): E21D11/00E21D11/38E21D11/10E21F16/02
CPCE21D11/003E21D11/006E21D11/10E21D11/38E21D11/383E21D11/385E21F16/02
Inventor 万炳宏周跃峰张建慈张建平李勇良张涛尹厚继崔宏章肖霞林陈宗国张伦庞尔林冯正范文远杨希祥庄佳宁兰文庆陆家盛曾馨平欧剑刘丰姚培儒郑昌明林高山王建兴廖正鸿钱文
Owner THE 1ST ENG CO LTD OF CHINA RAILWAY 25TH BUREAU GRP
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