Self-adhesive composite waterproof layer for tunnel and paving method of self-adhesive composite waterproof layer

Abstract

The invention belongs to the technical field of waterproof materials and the paving methods thereof and specifically relates to a self-adhesive composite waterproof layer for a tunnel and a paving method of the self-adhesive composite waterproof layer. The waterproof layer is composed of a double-faced self-adhesive film polymer waterproof roll and single-rolled self-adhesive film composite non-woven cloth; the double-faced self-adhesive film polymer waterproof roll orderly comprises a bituminous adhesive layer, a polymer waterproof material layer and a self-adhesive layer from top to bottom; the single-rolled self-adhesive film composite non-woven cloth orderly comprises a self-adhesive layer, a polymer waterproof material layer and a non-woven cloth layer from top to bottom; the self-adhesive layer of the double-faced self-adhesive film polymer waterproof roll is glued with the self-adhesive layer of the single-rolled self-adhesive film composite non-woven cloth. The self-adhesive composite waterproof layer for the tunnel is used for solving the problems of waterproof plate tear and back voids of secondary lining concrete due to uneven surface of the primary support shotcrete, and the waterproof layer is securely attached on the structural surface of the primary support shotcrete and the secondary lining concrete permanently and securely in an effective and economic manner.

Description

technical field [0001] The invention belongs to the technical field of waterproof materials and laying methods, and in particular relates to a self-adhesive composite waterproof layer for tunnels and a laying method thereof. Background technique [0002] To build mountain tunnels in surrounding rock strata rich in groundwater, the structures are required to have high waterproof performance, and try to be as impermeable as possible to ensure driving safety. Water seepage is a common disease in tunnels. Long-term seepage water, especially erosive groundwater, can cause erosion and damage to tunnel linings and corrode equipment in tunnels. In winter, the leaking water from the arch and side walls of the tunnel will form ice hanging into the tunnel boundary and hit the pantograph, etc., seriously affecting driving safety. The main causes of water leakage in the tunnel are the damage of the waterproof board during laying and the cracking of the molded concrete. [0003] With th...

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Problems solved by technology

[0005] One of the purposes of the present invention is to provide a self-adhesive composite waterproof layer for tunnels and a laying method thereof for solving the problem that the surface of the primary shotcrete is uneven and causes the waterproof board to tear and the hole behind the secondary lining concrete. It is an economical way to make the waterproof layer permanently and firmly adhere to the structural surface of the primary shotcrete and the second-lined concrete, and the self-adhesive composite waterproof layer can be fundamentally solved by layering and laying the whole

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