%0 Journal Article
%T 环境参数对公路隧道烟气蔓延影响的实验研究<br>以象山隧道为研究对象，利用缩尺温度模型进行实验，讨论环境温度、通风速度对隧道内的Experiment of environmental parameters affecting highway tunnel fire spread
%A 吴
%A 婧
%A 沈斐敏
%J 福州大学学报(自然科学版)
%D 2015
%R 10.7631/issn.1000-2243.2015.03.0391
%X aking Xiangshan Tunnel as an example，reduced scale temperature model is used for the fire experiments. The influence of environmental temperature and wind speed to the inner temperature and smoke spread in the tunnel is researched. Results show that: after the car being on fire in the tunnel，the temperature 温度以及烟气蔓延的影响规律. 研究表明： 隧道内汽车着火后，火源上方隧道顶部的温度上升幅度大，上、下游人眼特征高度处温度的上升幅度较小；通风对隧道内温度的影响很大；环境温度越低，烟气蔓延时间越短. 火灾发生后，未开启风机时，烟气蔓延降至人眼特征高度处时间需350～415 s；开启风机后，风速为2.4和4.8 m·s-1时，烟气达到人眼特征高度处的时间分别为25～40 s和20～30 s.<br>above fire source in the tunnel top raise much，on the human eye height forward and backward the source the temperature raise lesser；ventilation affect the temperature inside the tunnel greatly；the lower the ambient temperature is，the faster the smoke spreads；when the fire occurred and the fan is not turned on，smoke spreads down to the human eye height for 350-415 s，while the fan is turned on and the wind speed is 2.4 m·s-1 and 4.8 m·s-1，the flue gas reaches the human eye height for 25-40 s and 20-30 s
%K 公路隧道 火灾 环境温度 风速 烟气蔓延&lt
%K br&gt
%K highway tunnel fire environmental temperature wind speed fire spread
%U http://xbzrb.fzu.edu.cn/ch/reader/view_abstract.aspx?file_no=201503018&flag=1