列车车厢内火源发展对人员疏散的影响分析

Analysis on the Evacuation Influence of Fire Source Development in Train Compartment

结合列车火灾发生的典型原因分析,该文针对不同火源条件下的车厢火灾烟气分布及人员疏散安全性进行仿真分析。通过建立FDS车内火灾烟气数值计算模型,对不同火源发展速度、火源功率条件下车厢中部着火情形的烟气分布进行数值计算,得到了车厢内温度、CO浓度、出口处可见度随时间和位置变化的分布规律,并基于人员疏散危险性分析给出影响人员安全疏散的火源发展限值。

Combined with the typical cause of train fire,this paper analyzes the smoke distribution and evacuation safety of the car fire under different fire sources.By establishing a numerical calculation model of fire smoke in vehicle,the smoke distribution in the middle of the compartment was calculated under different fire source development speed and fire source power.The distribution rules of temperature,CO concentration and visibility at the exit change with time and position are obtained.Based on the analysis of the evacuation risk,the development limit of fire source which affects the safety of evacuation of personnel is given.