自动喷水灭火系统在公路隧道火灾的应用模拟研究

自动喷水灭火系统是目前在隧道消防应用中存在较大争议的灭火系统。通过FDS+EVAC软件模拟了公路隧道分别在有安装自动喷水灭火系统和没有安装自动喷水灭火系统的情况下发生火灾,对两种工况隧道内的烟气运动、温度分布、CO浓度分布进行了分析;并对人员的疏散进行了模拟。考虑了在不同的位置下不同的温度与一氧化碳浓度对人员的影响,并与相关的现实实验结果对比。结果表明安装自动喷水灭火系统可以有效降低隧道温度,安装此系统为隧道火灾发生的疏散救援提供了有利条件。

Simulation research of automatic sprinkler system in long-sized road tunnel fire

Automatic sprinkler system is a big controversial issue in long-sized road tunnel. In this paper, FDS+EVAC software was used to simulate the fire break out in the long-sized road tunnel. There were two kinds of program in this paper: setting Automatic sprinkler system and don"t setting Automatic sprinkler system. This paper analysis the smoke movement, temperature distribution, carbon monoxide concentration distribution in tunnel fire, considering under different temperature and the carbon monoxide concentration effects on people at different locations, after that, this paper simulate the personnel evacuation in tunnel. From the result we can see that setting automatic sprinkler system in long-sized road tunnels has both advantages and disadvantages, but consider the situation synthetically it is feasible.