Full-scale Fire Suppression Test for Application of Water Mist System in Road Tunnel

미분무수 소화시스템의 도로터널 적용을 위한 실물 화재 실험

  • Received : 2011.03.07
  • Accepted : 2011.06.10
  • Published : 2011.06.30


The full-scale experiments are carried out to investigate the fire suppression characteristics of water-based fire fighting systems in a road tunnel. Applied systems are the low-pressure water spray system at 3.5 bar and the high-pressure water mist system at 60 bar. The water flow rate of the high-pressure system is one sixth only of the water spray system. A passenger car and a heptane fuel pan with area of $1.4m^2$ are used as fire sources. A blower system is installed at the tunnel exit to realize the longitudinal ventilation conditions (0.9~3.8 m/s) in the tunnel. Temperatures from the fire source to the down-stream direction are measured by K-type thermocouple trees. The experimental results show that the cooling effect of the high pressure water mist system in the test conditions were equivalent to that of the low pressure water spray system for B-class fire.


  1. EU, UPTUN project report(2007).
  2. 건설교통부, "도로터널 방재시설 설치지침", 건설교통부(2004. 12).
  3. 한국터널공학회, "도로터널 방재시스템 개선방안 연구", 건설교통부(2008.3).
  4. 한국기계연구원, "도로터널 화재안전성 평가 및 가상 현실기반 소방훈련시스템 개발", 소방방재청(2008).
  5. 최병일, 한용식, 김명배, 소수현, "도로터널 저압물분무 설비 화재진압 실험", 한국화재소방학회 2008년 춘계학술논문발표회 논문집, pp.218-221(2008).
  6. SFPE, Handbook of Fire Protection Engineering, 3rd Edition. Section 3, Chapter 1, NFPA(2002).