A self-starting tunnel drainage system

Abstract

The invention provides an automatic starting type tunnel drainage system, which comprises a drill hole, a siphon, a side ditch and an automatic starting device. The drill hole is formed in the position, where drainage is needed, in tunnel surrounding rock, a water inlet of the siphon is placed in the drill hole, and a water outlet of the siphon is placed in a closed water tank; the automatic starting device is located on a roadbed side slope outside a tunnel and comprises the water tank, an exhaust pipe, a hemispherical floating body, a connecting rod, a vertical rod, a plug, a chain and a drainage pipe; the water tank is arranged on a roadbed slope surface, and the exhaust pipe is mounted on the side face of the water tank; the vertical distance from an inlet of the exhaust pipe to an outlet of the exhaust pipe is larger than the water column height corresponding to the local atmospheric pressure; the drainage pipe is mounted at the bottom of the water tank; the plug is mounted at a water inlet of the drainage pipe, the density of the plug is equal to the density of water, and the density of the hemispherical floating body is smaller than that of the water; and the vertical rod isfixed into the water tank, the connecting rod connects the vertical rod with the hemispherical floating body, and the hemispherical floating body and the plug are connected through the chain.

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 automatic start-up tunnel drainage system. 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 current tunnel water leakage prevention and control technologies mainly include: lining the tunnel with impermeable waterproof materials to prevent the groundwater in the surrounding rock from seeping into the tunnel. Concrete lining has a better waterproof effect in the short term, but the long-term anti-seepage performance will be reduced; Drainage facilities and structural measures are installed in the tunnel, and the accumulated water on the back of the lini...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the technical defect that the existing tunnel siphon drainage is difficult to maintain, and provides an automatic start-up tunnel drainage system, which can repeatedly start the siphon during the use of the tunnel siphon drainage system, and solve the problem of air accumulation in the pipe during the use of the siphon drainage system. Maintain and restart the siphon, and also solve the problem of siphon blockage, meet the needs of tunnel drainage, and control the rise of groundwater level in the surrounding rock of the tunnel in real time

Images