A tunnel drainage system and drainage method

Abstract

The invention relates to the field of tunnel engineering, and discloses a tunnel drainage system and a drainage method. The drainage system of the present invention includes a siphon tube arranged in the tunnel, the highest point of the siphon tube is connected with a wind exhaust device, the wind exhaust device includes fan blades, air suction chambers, round wheels and moving pieces, and the fan blades face the wind direction of the tunnel piston Setting, the round wheel is set eccentrically in the air suction chamber and one side forms a dynamic seal with the inner wall of the air suction chamber, the top of the moving piece contacts the inner wall of the air suction chamber to form a dynamic seal, the moving piece and the round wheel divide the suction chamber It is the suction space and the exhaust space, the intake pipe communicates with the suction space, and the exhaust pipe communicates with the exhaust space. The tunnel drainage system uses the piston wind generated by the train to drive the wind exhaust device to discharge the gas accumulated in the siphon tube in time to prevent the siphon effect from failing. It can discharge excess groundwater in the surrounding rock of the tunnel in real time without any external power or manual maintenance.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to a tunnel drainage system and a drainage method. Background technique [0002] Water leakage in tunnel engineering is a problem that plagues tunnel operation and maintenance. The long-term leakage of tunnel water will cause erosion and damage to the tunnel lining, and the leakage water will also have a softening effect on the surrounding rock of the tunnel, reducing the strength of the surrounding rock and causing the surrounding rock to become unstable and damaged. The current drainage measures greatly damage the integrity of the lining, the long-term effect is not good, the drainage range is small, and the maintenance cost is high. [0003] In the prior art, siphon drainage is a relatively excellent drainage method in current tunnel drainage measures. Siphon drainage uses siphon action to automatically discharge excess groundwater in the surrounding rock of the tunnel without ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a tunnel drainage system and drainage method to prevent the failure of the siphon

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