摘要
针对列车移动载荷作为引火源导致车内火灾发展蔓延的情形,采用数值模拟方法建立车厢火灾燃烧及人员疏散模型,研究了引火源燃烧特性对列车火灾发展、烟气分布及人员疏散的影响。结果表明:车厢火灾发展主要取决于引火源的火灾增长系数,而引燃周围可燃材料的时间主要取决于引火源最大火源功率;从温度的角度分析,为保证着火车厢人员安全疏散,引火源不得超过150kW;引火源为超快速发展时,着火车厢疏散时间的修正系数K可取1.25~1.35;快速发展时K可取1.1~1.3。
The numerical simulation method is used to establish combustion and evacuation modelsfor thecompartment fire ignited by moving loads.The influences of combustion characteristics of the ignition sources on train fire development, smoke distribution and evacuation are studied.The results show that:the development of compartment fire mainly depends on the fire growth coefficient of the fire source, and the igniting time of the combustible material depends mainly on the maximum heat release rate of the ignition source;basedon the analysis of temperature distribution, to ensure the safety of the people, the ignition source can be no more than 150kW;when the ignition source is extra-fast development, the correction coefficient of the evacuation time is recommended to be 1.25~1.35, while in the rapid development that can be 1.1~1.3.
作者
李盎
毕海权
秦萍
苟琦林
Li Ang;Bi Haiquan;Qin Ping;Gou Qilin(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu,610031)
出处
《制冷与空调（四川）》
2019年第3期337-342,共6页
Refrigeration and Air Conditioning
基金
国家重点研发计划(高速列车火灾燃烧特性及火灾条件下列车运行环境与疏散耦合技术研究2016YFB1200403-B-01)
关键词
高速列车
火灾蔓延
烟气分布
人员疏散
high-speed train
fire spread
smoke distribution
heat release rate
evacuation
