摘要
为分析不同排烟口布置形式对救援站内火灾烟气蔓延特性的影响,优化紧急救援站排烟口布置,以川藏铁路某特长铁路隧道紧急救援站工程为依托,建立分修隧道内紧急救援站列车火灾三维数值计算模型,研究排烟口数量对紧急救援站排烟效果的影响。研究结果表明:对于分修隧道内零坡度紧急救援站,随着排烟口数量的增加,救援站内总体排烟效率逐渐降低、能见度变差,而拱顶最高温度减小,高温区范围也相应减少;从排烟效率、温度、能见度等方面综合考虑,当排烟口数量为3个时,救援站排烟效果较好。
In order to analyze the influence of different arrangements of smoke outlets on the spreading characteristics of fire smoke in rescue stations,and optimize the arrangement of smoke outlets in emergency rescue station,this paper establishes a three-dimensional numerical calculation model of train fire in the emergency rescue station in the sub-repair tunnel,and studies the effect of the number of smoke exhaust outlets on the smoke exhaust effect of the emergency rescue station based on the emergency rescue station project of an extra-long railway tunnel on the Sichuan-Tibet Railway.The research results show that,for the zero-gradient emergency rescue station in the sub-repair tunnel,as the number of smoke exhaust outlets increases,the total smoke exhaust efficiency in the rescue station gradually becomes lower and the visibility becomes worse;while the maximum temperature of the vault decreases and the range of the high temperature zone is also reduced correspondingly;better smoke exhaust effect of the rescue station can be achieved with three exhaust outlets in aspects of smoke exhaust efficiency,temperature and visibility.
作者
方钱宝
陈思宇
王峰
张路华
FANG Qianbao;CHEN Siyu;WANG Feng;ZHANG Luhua(Guiyang Survey,Design and Research Institute Co.,Ltd.Of CREEC,Guiyang 550002,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《铁道标准设计》
北大核心
2021年第10期135-139,共5页
Railway Standard Design
基金
国家自然科学基金项目(52078429)
四川省科技计划项目(2020YFS0290)
中铁二院工程集团有限责任公司科技开发课题(KD-NQ202060)。
关键词
川藏铁路
隧道工程
火灾模拟
紧急救援站
排烟口布置
Sichuan-Tibet Railway
tunnel engineering
fire simulation
emergency rescue station
smoke outlet arrangement
