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Tunnel waterproof board bonding and laying process

A tunnel waterproof board and waterproof board technology, which is applied in tunnels, tunnel linings, mining equipment, etc., can solve problems such as low laying efficiency, easy welding through waterproof boards, and insufficient waterproof board reservation, and achieve the effect of simple and fast construction

Inactive Publication Date: 2016-08-10
SICHUAN HAODESI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two laying methods have become the main laying methods of waterproof boards at present, and each has its advantages and disadvantages: the lace suspension method is fast in laying speed, but it is easy to cause insufficient reservation of waterproof boards, and holes are likely to be formed on the top of the tunnel; hot-melt gaskets are fixed The method is easy to weld through the waterproof board, and the laying efficiency is low

Method used

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Embodiment Construction

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0014] A tunnel waterproof board bonded laying process, comprising the following steps:

[0015] Step 1, initial support base surface treatment.

[0016] The second step is to construct a drainage blind pipe.

[0017] Step 3: Lay the geotextile, and fix the geotextile and the primary support with nails to ensure that the concave and convex parts on the surface of the geotextile and the primary support are closely attached. The D surface of the geotextile is the bonding surface, and a layer is compounded on the bonding surface Polyethyl...

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Abstract

The invention provides a tunnel waterproof board bonding and laying process. The process comprises the following steps: step 1, treatment of the fundamental plane of a primary support; step 2, manufacturing of a water drainage blind pipe; step 3, laying of geotechnical cloth; step 4, annular bonding and laying of waterproof boards; step 5, lap-joint of edges of the waterproof boards; step 6, checking and local treatment; step 7, pouring of second lining; step 8, forming of a skin-type waterproof layer through concrete and self-adhesive glue. The major innovative point of the system is that the problem of adhesion between the waterproof boards and the geotechnical cloth is systematically solved by optimizing the formula of adhesive glue and the structure of the geotechnical cloth. The waterproof boards are bonded with the geotechnical cloth on the primary support through the adhesive glue; compared with a suspending and washer welding construction manner, the process has the construction characteristics of simplicity and rapidness; the coiled materials can be closely attached to the primary support, and the problem that a cavity is formed at the top of the secondary lining due to insufficient reservation of traditional coiled materials is solved well.

Description

technical field [0001] The invention relates to the technical field of building waterproof materials, in particular to a process for bonding and laying tunnel waterproof boards. Background technique [0002] In the construction process of road and railway tunnels using the mining method, the way of laying waterproof boards is often used to solve the problem of tunnel waterproofing. The usual construction technology is to lay geotextiles on the basis of pouring the initial support, then lay waterproof boards, and finally pour the second Secondary lining, so that between the primary support layer and the second lining, the polymer waterproof board is used to isolate the water seepage from the mountain, and the geotextile is used to filter the gravel and buffer to protect the waterproof board. The waterproof board and the geotextile have a composite sheet in which the two are combined through full compounding or point compounding, and there is also a homogeneous sheet in which ...

Claims

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Application Information

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IPC IPC(8): E21D11/38
CPCE21D11/381
Inventor 何波兵
Owner SICHUAN HAODESI NEW MATERIAL TECH CO LTD
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