Composite corrugated board supporting waterproof and drainage system

Abstract

The invention discloses a composite corrugated board supporting waterproof and drainage system, and belongs to the field of tunnel engineering. The system consists of a waterproof system and a drainage system. The waterproof system consists of a corrugated board support and a corrugated board surface waterproof board. The drainage system consists of circumferential water guiding blind pipes, longitudinal drainage pipes, transverse drainage pipes and central drainage pipes. Circumferential drainage pipes in a drainage layer are arranged at equal intervals in the tunnel axial direction, arrangedin the middle position of a corrugated board, and connected with through the longitudinal drainage pipes. The longitudinal drainage pipes are arranged the tunnel arch shoulder and the arch feet. Thelongitudinal drainage pipes and the central drainage pipes are connected through the transverse drainage pipes. The assembled composite corrugated board supporting waterproof and drainage system is good in durability and excellent in using performance, so that consumption of the waterproof and drainage system during maintenance and use is reduced.

Description

technical field [0001] The invention belongs to the field of tunnel engineering, and in particular relates to a composite material corrugated board support system. Background technique [0002] Groundwater has always been a very important factor in underground engineering structures, especially in tunnel engineering. At present, the leakage of water in the tunnel is very serious. The leakage of the tunnel will cause corrosion to the tunnel structure and internal facilities, affect the safety of the tunnel, reduce the service life of the tunnel structure, and increase the cost of tunnel operation. [0003] The existing waterproof and drainage structures of tunnels are usually provided with waterproof boards and non-woven fabrics between the primary support and the secondary lining, and a water guide blind pipe is arranged circumferentially behind the lining, and a vertical drainage pipe is arranged at the bottom. Various problems often occur in the construction and use of th...

AI Technical Summary

Problems solved by technology

Various problems often occur in the construction and use of the waterproof and drainage system: the shotcrete in the initial support of the tunnel often has protrusions or the ends of the anchor rods are exposed, resulting in damage to the waterproof board; The drainage pipe is in direct contact with the waterproof board and the primary support and the secondary lining, which often leads to the rupture of the waterproof board or the disconnection of the water guide blind pipe when the misalignment occurs; the service life of the waterproof board is about 60 years, while The designed service life of the tunnel is 100 years, and it is difficult to replace and repair the waterproof and drainage system after the waterproof board fails

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