Construction method of tunnel waterproof and water drainage system

A construction method and technology for waterproofing and drainage, which can be used in drainage, tunnels, tunnel linings, etc., can solve the problems of manual hanging, water leakage at welding, and labor-intensive workers, so as to improve construction efficiency, reduce labor intensity, and prevent waterproofing. good effect

Inactive Publication Date: 2009-12-30
CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, the widely used waterproof technology for highway tunnels is to hang non-woven fabric between the primary support and the secondary lining as the drainage layer and buffer layer, and weld the waterproof board under the non-woven drainage layer to obtain a waterproof layer. The disadvantage is that the non-woven fabric drainage layer is mostly hung manually, and the waterproof board is also welded into a whole by hand, the efficiency is very low, and the labor intensity of the construction workers is relatively high; the most fatal thing is that the waterproof board is easy to break, The quality of the welding with the waterproof board is difficult to guarantee, and water leakage is prone to occur at the welding place. As a result, water leakage is common in current tunnel projects, and the waterproof effect is not very ideal

Method used

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  • Construction method of tunnel waterproof and water drainage system

Examples

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Effect test

Embodiment 1

[0013] A construction method for a tunnel waterproof and drainage system, comprising the following steps:

[0014] (1) Raw materials for preparing the drainage layer: add 50 parts of rubber particles with a particle diameter of 1.0 mm, 50 parts of rubber particles with a particle diameter of 100 mesh, 20 parts of mineral wool fibers, and 50 parts of VAE emulsion in parts by weight and mix and stir evenly;

[0015] (2) Spray drainage layer 2: Put the prepared drainage layer raw materials into the sprayer and spray evenly on the shotcrete base 1 on the inner wall of the tunnel (the shotcrete base is sprayed on the inner surface of the rock layer on the inner wall of the tunnel). Until the pits on the base layer are filled up, and air-dried naturally to obtain the drainage layer 2;

[0016] (3) Spray waterproof layer 3: Add isocyanate and amine compounds to different containers in the special polyurea spray machine, mix and spray on the drainage layer with a spray thickness of 1....

Embodiment 2

[0018] A construction method for a tunnel waterproof and drainage system, comprising the following steps:

[0019] (1) Prepare drainage layer raw materials: add 75 parts of rubber particles with a particle diameter of 1.5 mm, 25 parts of rubber particles with a particle diameter of 200 mesh, 20 parts of mineral wool fibers, and 80 parts of VAE emulsion in parts by weight and mix and stir evenly;

[0020] (2) Spray drainage layer 2: Put the prepared drainage layer raw materials into the sprayer and spray evenly on the shotcrete base 1 on the inner wall of the tunnel (the shotcrete base is sprayed on the inner surface of the rock layer on the inner wall of the tunnel). Until the pits on the base layer are filled up, and air-dried naturally to obtain the drainage layer 2;

[0021] (3) Spray waterproof layer 3: Add isocyanate and amine compounds to different containers in the special polyurea spray machine, mix and spray on the drainage layer with a spray thickness of 1.5mm, and i...

Embodiment 3

[0023] A construction method for a tunnel waterproof and drainage system, comprising the following steps:

[0024] (1) Preparation of drainage layer raw materials: add 25 parts of rubber particles with a particle diameter of 1.2 mm, 75 parts of rubber particles with a particle diameter of 150 mesh, 30 parts of mineral wool fibers, and 60 parts of VAE emulsion in parts by weight and mix and stir evenly;

[0025] (2) Spray drainage layer 2: Put the prepared drainage layer raw materials into the jetting machine and spray evenly on the shotcrete base layer on the inner wall of the tunnel 1, (the shotcrete base layer is sprayed on the inner surface of the rock layer on the inner wall of the tunnel). Until the pits on the base layer are filled up, and air-dried naturally to obtain the drainage layer 2;

[0026] (3) Spray waterproof layer 3: Add isocyanate and amine compounds to different containers in the special polyurea spray machine, mix and spray on the drainage layer with a spr...

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Abstract

The invention discloses a construction method of a tunnel waterproof and water drainage system, comprising the following steps: (1) preparing raw materials on a drainage layer; (2) injecting the drainage layer; (3) injecting a waterproof layer. The drainage layer and the waterproof layer of the invention all adopt the construction technology of injection. On the basis of water conductivity function, the drainage layer also has the functions of leveling and adapting to structural deformation, the waterproof layer adopts the construction mode of instantaneous film forming by ultraspeed curing and injecting, and the formed film is an integral structure, thus realizing that the integral structure is seamless and waterproof, the injection surface is free of flow, the film surface is smooth without bubbles and the construction produces no volatile organic compounds, simultaneously greatly improving the construction efficiency and reducing the labor intensity of workers.

Description

technical field [0001] The invention belongs to a construction method, in particular to a construction method of a tunnel waterproof and drainage system. Background technique [0002] In tunnel construction, waterproof technology is an important link in tunnel construction. At present, the widely used waterproof technology for highway tunnels is to hang non-woven fabric between the primary support and the secondary lining as the drainage layer and buffer layer, and weld the waterproof board under the non-woven drainage layer to obtain a waterproof layer. The disadvantage is that the non-woven fabric drainage layer is mostly hung manually, and the waterproof board is also welded into a whole by hand, the efficiency is very low, and the labor intensity of the construction workers is relatively high; the most fatal thing is that the waterproof board is easy to break, The quality of the welding with the waterproof board is difficult to guarantee, and water leakage is prone to o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38E21F16/02C08L21/00C08K7/02
Inventor 刘伟吴梦军刘洋黄伦海王联果孙建国袁永明
Owner CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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