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Laying method for waterproof plates in tunnel

A technology of tunnel waterproof board and laying method, which is applied in tunnels, tunnel linings, mining equipment, etc., can solve problems such as difficult detection and inspection of water leakage holes, limitation of waterproof board width, and welding scars of waterproof boards, so as to reduce hidden dangers of water leakage, Reduce the workload and eliminate the effect of electric shock

Inactive Publication Date: 2018-01-12
ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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Problems solved by technology

[0005] The defect of the above-mentioned prior art is that the method of melting and bonding is very easy to form welding scars on the waterproof board and damage the waterproof board, forming water leakage holes that are difficult to detect and check; in order to melt the plastic gasket fixed on the tunnel wall It is also conducive to quickly pressing the waterproof board. The worker must lift the hand-held hot-melt welding machine between the waterproof board and the gasket for operation, and the other hand must be protected on the outside of the waterproof board to prepare for pressing. The interference is very large, which seriously limits the width of the waterproof board

Method used

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] Such as figure 1 and figure 2 As shown, the invention provides a method for laying a tunnel waterproof board, comprising the steps of:

[0040] Step 1. Treat the base surface of initial support 7

[0041] Remove the exposed bolt head and steel mesh head on the base surface of the initial support 7 at the same root, and smooth it with cement mortar. For the concave and convex parts on the surface of the initial support, select supplementary spraying concrete and plaster mortar according to the size of the leveling range 1. The method of partially hanging the molded concrete is leveled to prevent the local unevenness of the waterproof board from being pulled when the concrete is poured;

[0042] Step 2. Laying geotextile 4

[0043] The geotextile 4 is laid on the base surface of the initial support 7, and the geotextile 4 is fixed on ...

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Abstract

The invention relates to a laying process for waterproof plates in a tunnel. The laying process comprises the following steps that firstly, the base surface of a primary support is treated; secondly,a geotechnical cloth is laid; thirdly, the waterproof plates are laid and fixed, specifically, the waterproof plates are laid, meanwhile, capsule gaskets are knocked across the waterproof plates through a rubber hammer, bonding agents are released after capsules are fractured, then pressing is conducted for five minutes so as to guarantee that the bonding agents form a bonding layer, and the thirdstep is repeated to continue fixing of the next waterproof plate; fourthly, plate width gaps of the waterproof plates are welded ; fifthly, the sealing situations of the gaps of the waterproof platesare checked and treated locally; and sixthly, a secondary lining layer is poured. The laying process for the waterproof plates in the tunnel has the beneficial effects that a hot-melting welding machine is not needed any more during hanging of the waterproof plates; the widths of the waterproof plates can be greatly increased; and connection of the plate width gaps of the waterproof plates can bereduced in the tunnel.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a laying method of a tunnel waterproof board. Background technique [0002] At present, when the waterproof board is hung in the tunnel construction, the hot-melt plastic gasket is used to fix the waterproof board. The surface of the gasket is melted, and then the waterproof board is quickly bonded and fixed on the surface of the burned gasket, and the waterproof board can be laid along the periphery of the tunnel by using the bonding force between the gasket and the waterproof board. [0003] For example, the Chinese invention application with the application number of 201410640345.3 discloses a construction method of tunnel waterproof board, which is to overlap two pieces of the same tunnel waterproof board with a lap width of 10-15cm, adjust the tunnel waterproof board and The position and direction of the hot air welding machine, first turn on the fan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D11/38
Inventor 牛瑞郑孝福林琳胡必飞陈利峰陈潇王菊芳
Owner ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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