E3S Web Conf.
Volume 79, 2019International Symposium on Architecture Research Frontiers and Ecological Environment (ARFEE 2018)
|Number of page(s)||4|
|Section||Research on Civil Engineering and Geological Phenomena|
|Published online||15 January 2019|
Review of Research on critical velocity in tunnel fire
School of civil engineering and architecture, Southwest Petroleum University, 610500 Chengdu, China
2 School of Architectural Economics and Engineering Management, Hubei Business College, 430073 Wuhan, China
* Corresponding author: email@example.com
The critical velocity is the key for tunnel fire control. If the longitudinal ventilation velocity is greater than the critical velocity when the fire occurs, the upstream of the fire source is smokeless, and the smoke will flow to the downstream of the fire source, which can effectively control the fire spread and provide valuable time for personnel to escape and fire fighting. The researches of domestic and foreign scholars are used to investigate the influencing factors of critical velocity. the results show that the main influencing factors of critical velocity are fire heat release rate, tunnel section geometry, obstacle and slope in tunnel, etc. In this paper, the influencing factors are summarized, and some problems that need to be studied in tunnel fire are put forward.
© The Authors, published by EDP Sciences, 2019
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