摘要
通过FDS+EVAC软件模拟地铁列车在区间隧道发生火灾的情况下,列车进站疏散和就地疏散两种方式的疏散情况。模拟方案为列车前端的电气设备发生火灾,火源功率为7.5MW,到达峰值时间为206s。通过对比相同时间点上车厢内CO、CO2含量及温度的分布情况,分析两种疏散方式在特定情况下的疏散效果,明确影响疏散的限制条件。地铁在2 700m长的隧道中发生火灾时,进站疏散的方式所需的总时间更短。随着隧道长度的变化,列车人员疏散所需的反应时间以及疏散动作时间会不断变化,应根据具体情况确定疏散方案。
FDS＋ EVAC software was used to simulate the fire break out in the metro and evacuation of persons in tunnel.There were two kinds of evacuation program in the simulation as evacuating the people in the tunnel or in the station.The electrical equipment at the front of the train burned out in the simulation and the power of fire get the peak of 7.5 MW at 206 s.By analyzing the content of CO and CO2 and the temperature distribution,the evacuation under certain conditions was analyzed and the critical influences on evacuation were found out.Evacuate people in the station needed less time for fire of metro in this 2 700 m tunnel.The evacuation program should be determined based on the situation since the reaction time and action time change with the length of tunnel.
出处
《消防科学与技术》
CAS
北大核心
2014年第6期645-648,共4页
Fire Science and Technology
