A construction method for tunnel waterproof board without longitudinal construction joints

Abstract

The invention relates to a construction method for preventing the generation of a longitudinal construction seam in a tunnel waterproof plate, in particular to a construction method of a tunnel waterproof plate without a longitudinal construction seam. The longitudinal reserved grooves are formed in side walls at the two sides of an inverted arch; a water proof plate before the secondary lining building is laid to the reserved groove bottom, so that the longitudinal construction seam generation due to waterproof lap joint can be avoided; the water discharge smoothness is ensured; the principles of combining prevention, discharge, interception and blockage, adjusting measures to local conditions and performing integral governing are followed; the normal use of the tunnel structure and operation equipment and the driving safety are ensured. By using the construction method provided by the invention, compared with a conventional construction method of embedding partial waterproof plates before inverted arch construction and hanging the rest waterproof plate before the secondary lining building, the construction method has the advantages that the waterproof plate is hung at the groovebottom; longitudinal lap joint is not generated; the completeness of the waterproof plate is good; during the secondary lining building casting, no influence is caused on the waterproof plate, so thatthe high quality and high efficiency of the water prevention and discharging can be ensured. The construction method has the advantages that the application range is wide; the problem of longitudinalconstruction seam of the tunnel waterproof plate can be solved.

Description

technical field [0001] The invention relates to a construction method for avoiding longitudinal construction joints of tunnel waterproof boards, in particular to a construction method for tunnel waterproof boards without longitudinal construction joints. Background technique [0002] In tunnel construction, there are many factors that affect the quality of tunnel construction, among which water is one of the most important factors. Tunnel waterproof and drainage is an important link in the construction quality of tunnel engineering. One of the links has always been valued by people. [0003] In the construction control method of waterproof and drainage of highway tunnels, attention should be paid first to prevent the damage of the waterproof board. Undoubtedly, the damage of the waterproof board will greatly affect the waterproof and drainage effect. Below the filling surface of the arch, part of the waterproof board needs to be pre-buried before the construction of the inv...

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Problems solved by technology

[0003] In the construction control method of waterproof and drainage of highway tunnels, attention should be paid first to prevent the damage of the waterproof board. Undoubtedly, the damage of the waterproof board will greatly affect the waterproof and drainage effect. Below the filling surface of the arch, part of the waterproof board needs to be pre-buried before the construction of the inverted arch, and the rest of the waterproof board should be hung before the secondary lining, resulting in longitudinal construction joints of the waterproof board

[0004] When the above construction methods are used for secondary lining concrete pouring, the welding quality of construction joints will be affected, and smooth drainage of the tunnel cannot be ensured.

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