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Experimental Research on Effects of Water Sprayed Curtain On Anti-diffusion of Fire Gases in Case of Tunnel Fire

터널 화재시 물분무노즐에 의해 형성되는 제연수막의 연기층 확산방지성능에 관한 실험적 연구

  • 박형주 (경원전문대학 소방시스템과) ;
  • 최영상 (대구보건대학 소방학) ;
  • 지남용 (한양대학교 건축공학부)
  • Published : 2004.03.01

Abstract

In case of a fire in road or railway tunnel it is always necessary to keep the escape condition as good as possible. Most of the victims of major fires in tunnels are because they couldn't leave the tunnel in time and were trapped by smoke, or rescue teams couldn't reach the place of the accident due to low visibility and high temperature. In spring 2003 a comprehensive field experiment was undertaken in a large scaled tunnel in Youngin City to test the effectiveness of a new water spray curtain system, designed to the air qualify inside of a tunnel in case of fire during passenger's escape to safe routes, In order to control the smoke propagation, fixed water sprayed nozzles were used to make water curtain system, which can be installed or hanging water piping line below ceiling. The experiment was accompanied by an extensive measurement campaign in order to measure temperature dropping effect and flow conditions as well as CO concentration for various water sprayed curtains produced by sprinkler heads or water spray nozzle. Eventually comparison analysis were undertaken to investigate the performance of water curtains under fixed water pressure. Therefore most effective water curtain system was presented on the basis of water droplet size in long tunnel.

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References

  1. Arvidson, M., "Fixed Fire Suppression Concepts for Highway Tunnels", Tunnel Management International, March 2000, pp. 9-14.
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