Fast water inrush prevention device for underwater tunnel

Abstract

The invention discloses a fast water inrush prevention device for an underwater tunnel. The fast water inrush prevention device comprises an expandable airbag, an inflation pump, and a plurality of restraint belts, wherein the expandable airbag is fixedly arranged on the side wall of a tunnel lining, the inflation pump is arranged outside the tunnel and used for inflating the airbag, and the restraint belts are arranged outside the airbag and used for restraining the airbag in a compressed state. According to the fast water inrush prevention device for the underwater tunnel, the fast water inrush prevention device is suitable for tunnels with various cross-section shapes, the problems such as construction and transportation affecting, surrounding rock condition limiting, and difficult building and dismantling due to the fact that a previous tunnel water retaining device occupies a tunnel clearance are solved, when a water inrush accident occurs in the tunnel, a water retaining wall canbe formed by opening an air pump on the ground, a blockage wall can be quickly established through ground control, the operation is convenient and fast, the fast water inrush prevention device can beput into use quickly, the spread of water is prevented to provide buffer time for emergency rescue, and the safety of a worker and equipment behind the working side is ensured.

Description

technical field [0001] The invention relates to the technical field of tunnel self-safety devices, in particular to a rapid anti-surge device for underwater tunnels. Background technique [0002] Tunnels crossing rivers and seas are often important nodes in modern urban transportation systems. At present, the most commonly used construction methods for underwater tunnels are: mining method, shield method, immersed tube method, etc. Among them, mining method tunnels are used in deep water and geological conditions. It is widely used in complex site environments, and representative projects include Xiamen Xiang'an Submarine Tunnel and Qingdao Jiaozhou Bay Submarine Tunnel, etc. [0003] Different from the shield tunnel, the excavation surface of the mining method underwater tunnel is open. When passing through the water-rich and weak stratum or the rock stratum with developed cracks, the excavation surface is prone to water inrush accidents, which will affect the construction ...

AI Technical Summary

Problems solved by technology

[0005] 1) The door frame invades the clearance of the tunnel, forming a bottleneck for transportation and driving;

[0006] 2) In order to meet the sealing requirements, the concrete door frame must be provided with a sill, and a steel plate bridge should be placed obliquely before driving. If the door leaf is closed, heavy obstacles such as steel plate bridges must be removed first, which will undoubtedly affect the rescue efficiency;

[0007] 3) It is required to be installed in a section with complete surrounding rock and high strength, and the location selection is not free;

[0008] 4) It is difficult to dismantle as a temporary construction structure in the later stage;

[0009] 5) The fabrication process of concrete door frame pouring and steel structure door leaf welding is complicated and expensive

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