Construction method for pre-laying tunnel waterproof coiled material

Abstract

The invention discloses a construction method for pre-laying a tunnel waterproof coiled material, which comprises the following steps of: pre-laying the waterproof coiled material on top surfaces or side walls of the constructions of tunnels, basements, dam culvert gates, various water pools and the like which are sprayed and poured with primary-lining concrete layers; after laying each section or block of the waterproof coiled material, clenching the waterproof coiled material on a working surface by adopting a composite nailing method to ensure that the waterproof coiled material can be effectively fixed on a primary-lining structure of the tunnels, and the nailing part cannot leak water; and pouring secondary-lining concrete on the surface of the waterproof coiled material, wherein theconcrete reacts with the coiled material for sealing adhesion. The construction method is simple and convenient to operate, has high efficiency and reliable fixing of the waterproof coiled material, and particularly adopts a pre-laying waterproof coiled material, which can generate chemical cross-linking reaction and physical mortise-tenon action with cast-in-place concrete, and can infiltrate into pores of cement gel and concrete in a creeping mode in the solidifying process of cement or concrete to generate an effect with stronger bonding force and irreversible bonding so as to obtain a great waterproof anti-permeation effect.

Description

technical field [0001] The invention relates to a method for laying or fixing building waterproof materials, in particular to a construction method for laying or fixing waterproof sheets or rolls on the top or side walls of projects such as large tunnels, subways, and basements. Background technique [0002] At present, there are more and more waterproof and anti-seepage construction projects for tunnels in transportation, subway basements, and garage roofs, civil air defense projects, dams, culverts, and various pools. The materials used for waterproofing are mainly coatings and various types. Such sheets or coils, with the emergence of asphalt waterproof membranes or polymer sheets with fabric layers, because they can be produced in factories and are easy to use, they are more and more popular in building construction, especially It is the construction of tunnels, subway basements and the top surface of embankment culvert gates. The side of the waterproof membrane with sea...

AI Technical Summary

Problems solved by technology

[0004] In terms of waterproof and anti-seepage construction of tunnels, subway basements, garage roofs, civil air defense projects, dams and culverts, and various types of pool tops or side walls, the method used is to paste it on the concrete inner layer of the top or side walls, or Set suspenders on the coiled material, use the suspenders to connect and fix it on the top of the tunnel, and then pour the secondary lining concrete. The disadvantage of these construction methods is that the adhesive waterproof coiled material is not a big problem for the small area of ​​the basement top or side wall. When pasting a large area, the waterproof membrane is easy to fall off, and the strength of the poured secondary lining concrete is not strong enough. The structure of the waterproof membrane becomes complicated by the method of connecting and fixing with suspenders, and the construction is not easy, so the current large tunnels, subway basements It is very difficult to construct the waterproof layer on the top surface or side wall, and the waterproof layer is also easily damaged, resulting in water channeling

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