Temporary blocking device for shield tunnel water permeable accident rescuing

Abstract

The invention discloses a temporary blocking device for shield tunnel water permeable accident rescuing. The device comprises a water blocking air bag and a high-strength drag net, the water blockingair bag comprises an inner container and an outer bag, an inner container protecting layer wraps the inner container, the outer bag wraps the inner container protecting layer, and a layer of high-strength steel wire net wraps the outer bag; an anchoring flange plate is arranged at one end of the inner container, a protecting layer reserved hole matched with the anchoring flange plate is formed inthe inner container protecting layer, and an outer bag reserved hole matched with the anchoring flange plate is formed in the outer bag; a tunnel with a water permeable accident can be rapidly blocked, and the accident is prevented from being expanded further; rescuing facilities are portable, the device is high in adaptability for the poor rescuing environment, a worker can carry the device in place, the facilities can be recycled, and the cost is low; the facilities are high in safety, no ejection or other disaster consequences are caused, and the safety of rescue workers is high; after rescuing is finished, later processing is simple, and no large amount of explosion work is needed.

Description

technical field [0001] The invention relates to the technical field of shield tunnel construction, in particular to a temporary blocking device for emergency rescue of shield tunnel water penetration accidents. Background technique [0002] China has entered a new period of rapid development of urban rail transit, and many first- and second-tier cities are carrying out subway construction. At present, most domestic subway tunnels are constructed by shield machines, and water penetration accidents occur frequently when shield tunnels are constructed under complex geological conditions and high groundwater levels. Once a shield permeation accident occurs, it may cause significant economic losses and even cause casualties. [0003] After the shield permeation accident, it will have a huge impact on the section of the tunnel and the surrounding environment. In order to avoid further expansion of the accident. Usually, a concrete dam is poured at a certain distance behind the s...

AI Technical Summary

Problems solved by technology

[0005] 1. It takes a long time to pour the concrete dam body. During the process of pouring the dam body, the danger of shield tunnel permeation accidents will be further expanded

[0006] 2. If the location of the permeation accident is far away from the end well of the shield machine, the conveying distance of the poured concrete is too long, and the operating conditions are poor

[0007] 3. After the rescue is over, it is very troublesome to deal with the concrete dam body and needs to be manually broken

[0008] The above problems directly affect the efficiency of emergency rescue for shield tunnel water penetration accidents and the difficulty of post-processing work

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