Highway tunnel group disaster-preventing system

Abstract

The invention discloses a highway tunnel group disaster-preventing system comprising an air exhausting device and an air blocking device. The air blocking device comprises an air guiding portion arranged on the top of a tunnel inlet, air supplementing vertical shafts communicating with the air guiding portion and second heating mechanisms arranged in the air supplementing vertical shafts, whereinthe second heating mechanisms are used for heating gas in the air supplementing vertical shaft, the air guiding portion is provided with an air outlet which is formed in the height direction and towards the ground, so that the gas in the air supplementing vertical shaft can be discharged out from the air outlet after being heated, and then external gas is stopped from directly entering the tunnels. The air exhausting device is used for exhausting gas in the tunnels. For tunnel portals close to each other, considering mutual influence of tunnel portal pollutants, exhaust and blockage are combined, channeling of pollutants between the adjacent tunnels is controlled, and therefore it is guaranteed that the good air environment continuously exists in the tunnels.

Description

technical field [0001] The invention relates to the field of disaster prevention for road tunnel groups, in particular to a disaster prevention system for road tunnel groups. Background technique [0002] The air pollutants from the tunnel will pollute the environment at the tunnel entrance after being discharged from the tunnel. When the distance between the upstream and downstream tunnels on the same path is short, the pollutants from the upstream tunnel can easily spread along the length of the tunnel from the tunnel exit to the tunnel entrance of the downstream tunnel. If good ventilation equipment is not used, the polluted air in the tunnel will be replaced with fresh air, which will affect the health of drivers and passengers, and is not conducive to driving safety. In the prior art, jet fans and axial fans are often used to discharge pollutants in the tunnel without considering the pollution to the downstream tunnel. When a fire breaks out in the tunnel, it is difficu...

AI Technical Summary

Problems solved by technology

[0002] The air pollutants from the tunnel will pollute the environment at the tunnel entrance after being discharged from the tunnel. When the distance between the upstream and downstream tunnels on the same path is short, the pollutants from the upstream tunnel can easily spread along the length of the tunnel from the tunnel exit to the tunnel entrance of the downstream tunnel. If good ventilation equipment is not used to replace the polluted air in the tunnel with fresh air, it will affect the health of drivers and passengers and is not conducive to driving safety

In the prior art, jet fans and axial fans are often used to discharge pollutants in the tunnel without considering the pollution to the downstream tunnel. When a fire breaks out in the tunnel, it is difficult to discharge the smoke due to its narrow and semi-closed special structure, and it is more likely to occur Pollutants flow between adjacent tunnels, thus posing a huge threat to the safety of people's lives and properties. Due to the special structural and environmental conditions such as dense tunnels, short tunnel spacing, and long intercommunication distances in the tunnel group, various accidents in the tunnels The frequency of accidents and the number of disaster relief forces required to rescue them after the incident have increased

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