Maintainable tunnel drainage system

Abstract

The invention discloses a maintainable tunnel drainage system, which comprises two longitudinal drainage ditches, a plurality of transverse and longitudinal drainage blind-ended tubes, a plurality of circumferential blind-ended tubes, a plurality of inspection shafts and two side ditches. The maintainable tunnel drainage system provided by the invention collects leakage water at the top and bottom of an arch of a tunnel, road surface water and flushing water by using the plurality of transverse and longitudinal drainage blind-ended tubes below a road surface, the plurality of circumferential blind-ended tubes behind a lining and the side ditches on two sides of the road surface respectively, gathers the water into the longitudinal drainage ditches on two sides of a roadbed and then drainsthe water out of the tunnel together, so that the stereoscopic tunnel drainage system is formed. In addition, when the longitudinal drainage ditches are blocked, the inspection shafts flush the longitudinal drainage ditches with high-pressure water, so that the whole drainage system can be maintained.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, in particular to a maintainable tunnel drainage system. Background technique [0002] The drainage system of a tunnel is an important link in the process of tunnel construction, normal use and safe operation. Especially in subsea tunnels, the drainage system is particularly important, which is directly related to the success or failure of tunnel construction and the use of functions. [0003] The tunnels built in the past are relatively outdated in terms of drainage concept, drainage materials, drainage technology and equipment, so the drainage system often has the following problems: fine particles in the surrounding rock can easily enter the drainage system, because there is no effective removal Therefore, the drainage system is often blocked; in addition, because the groundwater environment of the subsea tunnel is seawater, it has strong crystallization decomposition compound corro...

AI Technical Summary

Problems solved by technology

[0003] The tunnels built in the past are relatively outdated in terms of drainage concept, drainage materials, drainage technology and equipment, so the drainage system often has the following problems: fine particles in the surrounding rock can easily enter the drainage system, because there is no effective removal Therefore, the drainage system is often blocked; in addition, because the groundwater environment of the subsea tunnel is seawater, it has strong crystallization decomposition compound corrosion and moderate crystallization corrosion to concrete. Alkali-aggregate reaction of the cement in the layer may also form sediment and cause blockage of the drainage system, thus seriously affecting the normal use of the tunnel

Images