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Tunnel smoke control device for supplying air from parallel tunnels

A technology of parallel tunnels and tunnels, applied in the field of tunnels, can solve the problems of the smoke-proof system being difficult to prevent smoke, the capacity of the pressurized blower is large, and the level of civil construction is limited, so as to achieve remarkable smoke-proof effect, excellent performance and simple structure. Effect

Active Publication Date: 2014-01-01
SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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  • Application Information

AI Technical Summary

Problems solved by technology

The length of the safe evacuation channel is usually more than 1km, and the long tunnel may even reach more than 5km, so that the radius of the pressurized air supply of the safe evacuation channel is as long as several kilometers. Therefore, the existing tunnel evacuation channel smoke prevention system is difficult to ensure that any position in the tunnel can have a good smoke prevention effect

Method used

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  • Tunnel smoke control device for supplying air from parallel tunnels

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Embodiment

[0016] like figure 1 As shown, the smoke-proof structure of the tunnel in this embodiment, and two tunnels 5 and 7 arranged in parallel, a safe evacuation passage 6 is arranged therebetween, a communication passage 8 is arranged between the tunnel 5 and the safe evacuation passage 6, and in the tunnel 7 A communication channel 4 is arranged between the safe evacuation channel 6 .

[0017] The two-way operation fan 1 positive pressure air outlet is respectively connected to control the air supply slits 2 of the four air curtains through four steering air valves 3, and two sets of air supply strips are set at the interface between the safety tunnel evacuation channel 6 and the tunnel 5 One group of air supply slots 2 is located at the interface between the tunnel 5 and the communication channel 8, and the other group of air supply slots 2 is located at the interface between the communication channel 8 and the safety evacuation channel 6. Two sets of air supply slits 2 are set a...

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Abstract

The invention relates to a tunnel smoke control device for supplying air from parallel tunnels, which is a pressurized smoke control facility proposed by aiming at the current situation that the pressurized air supply effect of the traditional tunnel evacuation exit (secure channel) is limited, wherein the pressurized smoke control facility is arranged on the joint of the tunnel evacuation exit (secure channel) and a main tunnel. The tunnel smoke control device comprises air curtain machines, an air supply slot and a changeover air valve, wherein the air curtain machines are installed in the evacuation exit, and the air supply slot is installed on the joint of the evacuation exit or a vehicular access with a contact passage. The main purpose of the tunnel smoke control device is to prevent smoke in the main tunnel from entering the evacuation exit (secure channel), and the evacuation exit (secure channel) is guaranteed to be free from smoke. Compared with the prior art, influence on the human body by a pressure in the evacuation exit can be lightened, and energy consumption is lower.

Description

technical field [0001] The invention relates to tunnels, in particular to a tunnel smoke prevention device for blowing air from parallel tunnels. Background technique [0002] The tunnel evacuation channel is the escape channel for people to evacuate when a fire breaks out in the tunnel. When a road tunnel or railway tunnel is equipped with a safe evacuation passage parallel to the tunnel, in order to prevent the fire smoke in the driving tunnel from entering the safe evacuation passage, according to Article 12.3.3 of the "Code for Fire Protection Design of Buildings" (GB 50016-2006): Tunnel fire An independent mechanical pressurized air supply system should be installed in the refuge facility, and the residual pressure value of the air supply should be 30-50pa. When the existing road tunnel or railway tunnel is provided with a safe evacuation passage parallel to the tunnel, in order to prevent fire smoke from the driving tunnel from entering the safe evacuation passage, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F1/00E21F11/00
Inventor 郑晋丽蒋卫艇奚峰
Owner SHANGHAI TUNNEL ENGINEERING RAILWAY TRANSPORTATION DESIGN INSTITUTE
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