Frost damage prevention drainage system for tunnel

Abstract

The invention discloses a frost damage prevention drainage system for a tunnel. A heat-insulating buried water trench (6) is arranged below a primary support layer (1); multi-section draining pipes (7) are arranged in the heat-insulating buried water trench (6); an inspection shaft (8) is arranged between two adjacent draining pipes (7); the lower end of the inspection shaft (8) is communicated with the draining pipe (7); waterproof plates (11) are fully paved between the primary support layer (1) and a secondary lining concrete layer (2); annular punching bellows (12) and longitudinal punching bellows (13) are arranged on the outer sides of the waterproof plates (11); and openings at the lower ends of the annular punching bellows (12) are positioned in a gravel water seepage layer (10). According to the frost damage prevention drainage system disclosed by the invention, the phenomenon that the draining pipeline of a tunnel drainage system is blocked in severe cold regions due to freezing can be effectively prevented, the damage to a tunnel lining structure is avoided, the driving safety is ensured and the cleaning and maintaining expenses during operation are greatly reduced. The frost damage prevention drainage system has the characteristics of simple structure, easiness in implementation, favorable reliability, easiness in popularization and the like.

Description

technical field [0001] The invention belongs to the technical field of tunnel waterproofing and drainage, and in particular relates to a tunnel antifreezing damage drainage system applied in severe cold regions. Background technique [0002] Tunnels built in northern my country and high-altitude cold areas, when winter comes, due to low temperature, the water flow is easy to freeze and block the drainage pipes, which will cause ice on the arch of the tunnel, ice on the side wall, ice on the network cable equipment in the cave, and surrounding rocks. Frost heaving, lining swelling, ice cones at the bottom of the tunnel, ice plugs in water ditches, frozen lines, etc. not only cause damage to the tunnel lining structure, but also cause boundary violations, endangering driving safety. Cleaning and maintaining the frost-damaged surface of the tunnel lining will be costly and difficult, and will not solve the fundamental problem. Contents of the invention [0003] The technical ...

AI Technical Summary

Problems solved by technology

[0002] Tunnels built in northern my country and high-altitude cold areas, when winter comes, due to low temperature, the water flow is easy to freeze and block the drainage pipes, which will cause ice on the arch of the tunnel, ice on the side wall, ice on the network cable equipment in the cave, and surrounding rocks. Frost heaving, lining swelling, ice cones at the bottom of the tunnel, ice plugging in the ditch, frozen lines, etc., not only cause damage to the tunnel lining structure, but also cause boundary invasion, endangering driving safety

Cleaning and maintaining the frost-damaged surface of the tunnel lining will be costly and difficult, and will not solve the fundamental problem

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