摘要
基于火灾动力学理论以及隧道火灾的特点,利用FDS软件对地铁区间隧道火灾进行数值模拟,分析了B型地铁列车中部起火、并在区间隧道内就地疏散的条件下,两侧车门同时开启和一侧车门开启时对火灾烟气流动特性的影响,得出两种情况下纵向疏散平台处的能见度、温度、CO浓度随时间的变化规律,并探究两种情况下火灾烟气对人员疏散的影响。结果表明:两侧车门同时开启时,在150 s出现危险状态,而一侧车门开启时,在100 s出现危险状态,同时疏散平台处的温度、CO浓度普遍较高,能见度较低;相比之下,地铁列车发生火灾时,两侧车门开启有利于人员的安全疏散。该研究可为地铁区间隧道火灾时的人员疏散和紧急救援提供依据。
Based on the fire dynamics theory,and the characteristics of tunnel fire,this paper simulates the fire in subway interval tunnel by using the FDS software.The paper analyzes the influence of two evacuation strategies on the fire smoke flow when the fire occurs in the middle of the B-type subway train and the evacuation is proceeded in the interval tunnel,namely,when the door on both sides are opened and when the door on one side is opened.The paper explores the variation of visibility,temperature,CO concentration with time in the two modes of lateral evacuation platform and the influence of the two evacuation strategies on the personnel evacuation.The results show that when the doors on both sides are opened at the same time,and the dangerous state occurs at 150 s,while when one side door is opened,the dangerous state occurs at 100 s.At the same time,the temperature and CO concentration are relatively higher,and the visibility is lower.In contrast,when the fire occurs,the opening of the doors on both sides is more conducive to personnel evacuation.The research may provide basis for personnel evacuation and emergency rescue in subway interval tunnel fire.
作者
丁厚成
朱庆松
郭双林
胡莹莹
DING Houcheng;ZHU Qingsong;GUO Shuanglin;HU Yingying(School of Construction Engineering,Anhui University of Technology,Ma’anshan 243032,China)
出处
《安全与环境工程》
CAS
北大核心
2019年第2期162-168,共7页
Safety and Environmental Engineering
基金
安徽省自然科学基金项目(1808085ME161)
大学生创新创业训练计划项目(201710360043
201810360263)
关键词
地铁区间隧道
火灾
烟气流动
人员疏散
数值模拟
subway internal tunnel
fire
smoke flow
personnel evacuation
numerical simulation
