Journal of Northeastern University ›› 2013, Vol. 34 ›› Issue (5): 719-721.DOI: -

• Resources & Civil Engineering • Previous Articles     Next Articles

Suppression on the Tunnel Fire by Coupling the Longitudinal Smoke Discharge and High Pressure Water Mist〓

ZHANG Peihong, FENG Rui, XU Wenbin, TIAN XiangLiang   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2012-08-01 Revised:2012-08-01 Online:2013-05-15 Published:2013-07-09
  • Contact: ZHANG Peihong
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Abstract: The tunnel model(6m×15m×2m) was used to the firesuppression experiment under the combined effect of the longitudinal smoke discharge and water mist. The temperatures near the fire source were measured to analyze the firesuppression effect under the different pressure of water mist, as well as the different start time of high pressure water mist and longitudinal smoke discharge. The results showed that to the 250mm×200mm diesel pool fire, the 6MPa water mist can effectively extinguish the diesel pool fire without the longitudinal smoke discharge. If the longitudinal smoke discharge and high pressure water mist was started at the same time, 15MPa water mist can control fire the best. When the longitudinal smoke discharge is started 30 seconds earlier than the water mist, fire can be extinguished more effectively.

Key words: water mist, longitudinal smoke discharge, experiment, tunnel, pool fire

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