Multistage vertical partition fire prevention system for tunnel

Abstract

The invention discloses a multistage vertical partition fire prevention system for a tunnel. According to the multistage vertical partition fire prevention system, an ignition point is effectively separated from a periphery tunnel space, quick and mass diffusion of smoke generated by fire is avoided, and an escape way is provided for personnel evacuating and fire-fighting equipment entering in the tunnel. The multistage vertical partition fire prevention system comprises flexible tunnel fire prevention devices with retractable fireproof curtains; the flexible tunnel fire prevention devices are contentiously arranged in a tunnel cavity at intervals in the extending direction; and when the tunnel cavity is transversely partitioned by the retractable fireproof curtains of multiple adjacent flexible tunnel fire prevention devices, a plurality of partition spaces are formed in the tunnel cavity, and labyrinth seal is formed between the plurality of partition spaces and the tunnel cavity outside two sides of the plurality of partition spaces.

Description

technical field [0001] The invention relates to a tunnel, in particular to a tunnel fire prevention system. Background technique [0002] Due to terrain constraints, tunnel fires are characterized by incomplete combustion, large smoke, high local temperature, difficulties in evacuation and fire fighting, and are therefore extremely destructive. For example, on March 1, 2014, two methanol vehicles collided in the Yanhou Tunnel of Jinji Expressway located in Jincheng City, Shanxi Province, resulting in a methanol leak from the vehicle in front. The methanol caught fire during the disposal of the driver, and 42 vehicles in the tunnel Vehicles and coal and other goods were ignited and detonated. The accident caused 31 deaths and 9 missing people. The loss of personnel and property was heavy. The tunnel fire caused by the explosion was not extinguished until 73 hours later. [0003] At present, the measures taken to deal with tunnel fire prevention mainly include rigid fire door...

AI Technical Summary

Problems solved by technology

Rigid fire doors have explosion-proof functions, but they are usually heavy and costly, and in chaotic scenes of tunnel fires, the effect is easily affected by poor timing of closing

[0006] At present, there is a new kind of flexible tunnel fire-proof roller shutter. When a fire occurs, the roller shutter will sag under the action of gravity to form isolation. The cost is low, the installation is convenient, and the timing of cutting off the smoke is easy to grasp. The isolation effect on flue gas and combustion air is not ideal

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