摘要
基于隧道火灾国内外研究现状,根据隧道火灾理论确定边界条件,使用PyroSim进行建模,模拟分析发生不同规模的火灾时不同风速下的烟气流动情况,得出临界风速并与理论值进行对比,验证模拟的准确性。在临界风速下,综合考虑火灾致害因素烟气温度、能见度及CO浓度达到危险临界状态的时间,得出场景中人员可用安全疏散时间,对隧道人员逃生路线规划意义重大。
Based on the current research situation of tunnel fire at home and abroad,the boundary conditions are determined according to the tunnel fire theory,PyroSim is used for modeling,the flue gas flow at different wind speeds is simulated and analyzed in the event of fire of different scales,and the critical wind speed is obtained and compared with the theoretical values to verify the accuracy of the simulation.At critical wind speed,considering the time when the flue gas temperature,visibility and CO concentration reach a dangerous critical state due to the fire hazard factors,it is concluded that the safe evacuation time available for personnel in the scene is of great significance to the escape route planning of tunnel personnel.
作者
牛奕
王笑笑
黄钦
NIU Yi;WANG Xiaoxiao;HUANG Qin(College of Safety Science and Emergency Management,Wuhan University of Technology,Wuhan Hebei 430070,China)
出处
《工业安全与环保》
2023年第3期55-58,共4页
Industrial Safety and Environmental Protection
关键词
隧道火灾
烟气流动
临界风速
烟气温度
tunnel fire
flue gas flow
critical wind speed
flue gas temperature
