Tunnel drainage system based on mechanical method connection channel and control method of tunnel drainage system

By setting up a water suction puddle in the mechanical contact channel of the rail transit tunnel, and using the combination of negative pressure water suction components and positive pressure water drain components, the problem of the submersible pump being unable to effectively discharge low liquid level water accumulation is solved, and rapid and thorough water discharge is achieved to prevent erosion of the track bed and rails.

CN119754850AActive Publication Date: 2025-04-04CHINA RAILWAY DESIGN GRP CO LTD
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Patent Information

Application Number
CN202510245345.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-04
Publication Date
2025-04-04
Estimated Expiration
2045-03-04

AI Technical Summary

Technical Problem

In the rail transit tunnel of the mechanical contact channel, the submersible pump cannot effectively discharge the low-level shallow layer of water accumulation in the water collection tank, resulting in the long-term existence of water accumulation and erosion of the channel bed and rails.

Method used

A tunnel drainage system based on mechanical connection channels is designed, including setting up water suction puddles at the lowest points of the upward and downward tunnels, and combining negative pressure water suction components and positive pressure drainage components to achieve rapid and thorough water discharge.

Benefits of technology

Through the effective combination of the negative pressure water absorption assembly and the positive pressure drainage assembly, the accumulated water in the tunnel can be quickly and thoroughly discharged, preventing the accumulated water from eroding the track bed and rails.

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Abstract

The invention relates to the technical field of tunnel traffic, and discloses a tunnel drainage system based on a mechanical method connection channel and a control method of the tunnel drainage system. The tunnel drainage system comprises a water suction pit, a negative pressure water suction assembly and a positive pressure drainage assembly. The ascending tunnel and the descending tunnel are communicated through a mechanical method connection channel, and the lowest horizontal height of the mechanical method connection channel is higher than that of the ascending tunnel and the descending tunnel; the water absorption pit is arranged at the lowest point of the upstream tunnel and the downstream tunnel, and the lowest horizontal height of the water absorption pit is lower than the lowest horizontal height of the upstream tunnel and the downstream tunnel; the negative pressure water suction assembly comprises a self-suction pipe, and a water suction opening of the self-suction pipe extends into the water suction pit and is flush with the lowest horizontal plane of the water suction pit. The positive pressure drainage assembly comprises a submersible pump, and the submersible pump is arranged in the water suction pit. Based on the scheme, the influence of accumulated water on a ballast bed and a steel rail in the tunnel can be avoided.
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