Analysis of Fire Smoke Control System of under Construction Tunnel

Abstract:

Compared with operated tunnel, one of the distinguishing features of a tunnel during construction is its single-ended geometry. The direction of fire smoke movement is the same as the direction for worker to evacuate the tunnel. This paper calculates fire-induced conditions, including temperature, smoke movement and visibility, which are influenced by two different ventilation systems. According to the simulation, when the fire located at bottom of tunnel, forced extraction is more effective; when the fire located at middle of tunnel, forced injection can protect workers in tunnel. Besides，increasing ventilation rate can control smoke spread effectively.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1245-1250
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1245
• Online since: November 2012
• Authors: Jia Yun Sun, Zheng Fang, Jian Ping Yuan
• Keywords: Fire, Numerical Simulation, People Safety, Under Construction Tunnel, Ventilation System

References

[1] Chaohui Cheng. Fire Hazards and Precautions on the Construction Site.Science and Techology Consulting Herald,NO.2 (2008), pp.65-66. In Chinese

[2] Qinkun Xu. Analysis on Numerical Simulation to Fire Smoke Flow in being Constructed Tunnel with One Closed-end. Journal of Safety and Environment,Vol.10,NO.5(2010),pp.156-159.In Chinese

[3] Joelle DeJoseph. Analysis of Fire Conditions in a Closed-end Tunnel .Maryland: University of Maryland (2004):

[4] McGRATTAN K. "Fire Dynamics Simulator (Version 4), Technical Reference Guide" NIST Special Publication 1018, National Institute of Standards and Technology, Gaithersburg, Maryland, July 2004.

[5] Yang Xiao. Ventilation System of Long Tunnel Under Construction. Sichuan Water Power, Vol.27 ,NO.5(2008),pp.23-24. In Chinese

[6] Yongsheng Li. Selection of Tunnel Construction Ventilation Types.West-China Exploration Engineering, Series NO.97(2004), pp.83-87. In Chinese