Tunnel lining drainage structure and drainage method

Abstract

Provided are a tunnel lining drainage structure and a drainage method. According to the drainage structure, multiple vertical drainage pipes (2) are arranged on the surface of a tunnel primary support (1) in an annular mode, and the vertical drainage pipes (2) are communicated with an annular drainage pipe (5) respectively. The drainage method comprises the steps that 1), the vertical drainage pipes (2) are arranged on the surface of the primary support (1) in an annular mode, and expansion joints (9) are retained; 2), the vertical drainage pipes (2) are connected to the annular drainage pipes (5), the annular drainage pipe (5) is connected with horizontal drainage pipes (6), the horizontal drainage pipes (6) are connected to side ditches (7), and the side ditches (7) are connected to a center ditch (8); 3), expansion joint embedded parts (10) are buried in advance, and expansion joint waterproof rubber strips (11) penetrate through the expansion joint embedded parts (10). The drainage structure solves the problems that the annular drainage pipes (5) and the horizontal drainage pipes (6) are easily blocked in a present tunnel lining waterproof and drainage system.

Description

technical field [0001] The invention relates to a drainage structure, more specifically to a tunnel lining drainage structure and a drainage method, and belongs to the technical field of underground engineering waterproofing and drainage. Background technique [0002] Nowadays, waterproof board waterproof and drainage systems are often used in underground projects such as railway tunnels, highway tunnels and subway projects; because the waterproof performance of lining concrete is affected by construction technology, shrinkage and creep of concrete itself, it cannot meet the operational requirements for waterproofing of underground projects . At present, a waterproof layer composed of EVA waterproof version + geotextile is generally added behind the underground engineering lining, and then a circular drainage blind pipe and a horizontal drainage pipe are arranged behind the waterproof layer according to the water seepage of the tunnel. The drainage pipe introduces water see...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a tunnel lining drainage structure and drainage method for the existing tunnel lining waterproof and drainage systems, which are prone to problems such as blind drainage pipes in the circular direction and blockages in the horizontal drainage pipes.

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