Tunnel operation period water discharging system and method

Abstract

The invention relates to the technical field of tunnel water discharging, and provides a tunnel operation period water discharging system. A siphon pipe, an air gathering box and a wind power mechanism are included. The bottom of the air gathering box communicates with the highest position of the siphon pipe through a connecting pipe. The wind power mechanism comprises an exhaust box, a membrane,fan blades, a first one-way communication mechanism and a second one-way communication mechanism. A tunnel operation period water discharging method is provided. The siphon pipe is used for discharging water in tunnel surrounding rock into a water discharging ditch in a tunnel, and after a train enters the tunnel, piston wind generated by the train is blown towards the fan blades and drives the fan blades to rotate, the fan blades drive the membrane for bulging back and forth through a transmission mechanism, and then air in the siphon pipe is exhausted. According to the tunnel operation period water discharging system and method in the embodiment, the air gathering box is used for collecting air gathered at the top of the siphon pipe, the wind power mechanism is used for exhausting air inthe air gathering box, the failure of the vacuum degree of the top of the siphon pipe is avoided, and long-time normal running of siphon water discharging is guaranteed.

Description

technical field [0001] The invention relates to the technical field of tunnel drainage, in particular to a drainage system and a drainage method during tunnel operation. Background technique [0002] During the operation of the tunnel, water leakage in the tunnel not only affects the operation of the tunnel, but also destroys the structure of the tunnel and causes harm to the tunnel. Therefore, in order to solve the problem of tunnel water leakage, the water collection well is usually drilled obliquely downward in the surrounding rock of the tunnel at present, the water inlet end of the siphon is inserted into the bottom of the water collection well, and the water outlet of the siphon is placed in the drainage ditch in the tunnel. The water at the highest point in the tunnel flows to the outlet of the siphon under the action of gravity, and creates negative pressure at the top of the siphon, causing the water at the inlet of the siphon to be sucked into the pipe and flow to ...

AI Technical Summary

Problems solved by technology

[0003] During the process of siphon drainage in the tunnel, the air dissolved in the water will be precipitated to form air bubbles due to the pressure drop in the siphon. discharge, and then cause the top of the siphon to continuously accumulate air, so that the vacuum at the top of the siphon gradually decreases, and in severe cases, the siphon process will be interrupted, and the water in the surrounding rock of the tunnel cannot be discharged.

During the operation of the tunnel, there are generally no guards in the tunnel. Therefore, when the siphon fails, the water in the surrounding rock of the tunnel cannot be drained away, which will cause water leakage in the tunnel for a long time and affect the safety of the tunnel.

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