Tunnel top waterproof structure

By designing a waterproof structure on the top of the tunnel that includes water-absorbing sponge, tarp cloth and curved extrusion plate, the problem of the tunnel's waterproofing effect being reduced due to water erosion is solved, and efficient water management and improvement of waterproofing effect is achieved.

CN222976843UActive Publication Date: 2025-06-13RAILWAY CONSTR RES INST OF CHINA ACAD OF RAILWAY SCI CO LTD +2
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Patent Information

Application Number
CN202421804965.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-29
Publication Date
2025-06-13
Estimated Expiration
2034-07-29

AI Technical Summary

Technical Problem

During use, the tunnel is prone to water erosion, resulting in a decrease in water resistance effect, and when the water pressure increases, it will seep out through the concrete structure joints, resulting in corrosion of the substrate.

Method used

A tunnel top waterproof structure is designed, including a base body, a first water-absorbing sponge, a first tarp, a drain chute, a arc-shaped mounting groove, a arc-shaped extrusion plate, a water collection groove, a second water-absorbing sponge, a second tarp and a fixed steel bar. Through the combination of these components, water absorption, pressure relief and discharge are achieved.

Benefits of technology

It effectively improves the waterproof effect on the top of the tunnel, extends the service life of the waterproof structure, and realizes the recycling of water through the design of the arc-shaped extrusion plate.

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Abstract

The utility model belongs to the technical field of tunnel waterproofing, and discloses a tunnel top waterproof structure which comprises a base body, a first water absorption sponge is installed at the top end of the base body, first waterproof cloth is installed at the top end of the first water absorption sponge, drainage chutes are installed at the bottom ends of the two sides of the base body, and an arc-shaped installation groove is formed in the base body. And an arc-shaped extrusion plate is slidably mounted in the arc-shaped mounting groove, water collecting grooves are formed in the bottom ends of the two sides of the arc-shaped extrusion plate, a second water absorption sponge is mounted in the middle of the bottom end of the arc-shaped extrusion plate, and the bottom end of the second water absorption sponge is connected with the middle of the bottom end of the arc-shaped mounting groove. According to the tunnel top waterproof structure, water concentrated at the top of a tunnel can be discharged, water pressure accumulated at the top of the tunnel is relieved through deformation of the first water absorption sponge, meanwhile, water accumulated in the base body can be absorbed and discharged, the waterproof effect of the top of the tunnel is improved, and the service life of the tunnel top waterproof structure is prolonged.
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