Air inflation start type tunnel drainage system and method

Abstract

The invention provides an air inflation start type tunnel drainage system which comprises a drill hole, a siphon, a side ditch and an air inflation start device, wherein the drill bit is formed on a position needing drainage in tunnel surrounding rock; a water inlet of the siphon is formed in the drill hole; a water outlet of the siphon is formed in a closed water tank; the air inflation start device comprises a water tank, an exhaust pipe, a valve A, a drainage pipe, a valve B, a gas cylinder A, a gas cylinder B, a diversion pipe, a branch pipe, a pressure gauge, a gas pipe and a valve C; thegas cylinder A contains a sodium bicarbonate solution; the gas cylinder B contains a citric acid solution; the gas cylinder A and the gas cylinder B are connected through the diversion pipe; the pressure gauge is arranged at the middle of the diversion pipe; the branch pipe is connected to the diversion pipe; an entrance end of the gas pipe is arranged in the gas cylinder A; an exit end of the gas pipe is connected with the bottom of the water tank; the valve C is mounted on the gas pipe; the exhaust pipe is mounted at the top of the water tank; the valve A is mounted on the exhaust pipe; anentrance end of the drainage pipe is connected with the bottom of the water tank; and the valve B is mounted at an exit of the drainage pipe.

Description

technical field [0001] The invention belongs to the field of tunnel engineering, is suitable for drainage of mountain tunnels, and in particular relates to an inflation-activated tunnel drainage system and method. Background technique [0002] Affected by the complex geological environment and hydrogeological conditions, the construction and operation of the tunnel still faces many engineering problems. Among them, the water leakage disease of the tunnel is a problem that plagues the operation and maintenance of the tunnel. 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. Tunnel seepage water dripping onto the road surface will cause water accumulation or ice on the road surface, affecting traffic operation. The current drainage m...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the technical defect that the existing tunnel siphon drainage is difficult to maintain, and provides an inflatable start-up tunnel drainage system and method, which can repeatedly start the siphon during the use of the tunnel siphon drainage system, and solve the problems caused by the accumulation of air in the siphon pipe during the drainage process. The problem of needing to maintain and restart the siphon also solves the problem of sediment clogging in the siphon, meets the needs of effective drainage of the tunnel, and controls the rise of the groundwater level in the surrounding rock of the tunnel in real time

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