单洞双线盾构隧道逃生通道安全性评估  

Safety evaluation on evacuation passage of single hole double track shield tunnel

作　　者：徐永[1,2] 廖少明[2] 张迪[3] XU Yong;LIAO Shao-ming;ZHANG Di(Changzhou Institute of Engineering Technology,Jiangsu Changzhou 213164,China;Department of Geotechnical Engi.neering,Tongji University,Shanghai 200092,China;China Railway Siyuan Survey and Design Group Co.,Ltd.,Hubei Wu.han 430063,China)

机构地区：[1]常州工程职业技术学院,江苏常州213164 [2]同济大学土木工程学院,上海200092 [3]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《消防科学与技术》2018年第10期1344-1347,共4页Fire Science and Technology

基　　金：国家重点基础研究发展计划(973计划)项目(2015CB057806);国家自然科学基金项目(51078292)

摘　　要：针对温州瓯江北口隧道单洞双线断面的空间特点,应用FDS对不同疏散方案的火灾烟气流进行数值模拟,确定不利工况,在此基础上对温州瓯江北口隧道疏散救援方案进行评估分析。通过模拟评估分析可得:对于瓯江北口隧道疏散设计方案,从火灾蔓延和烟气流动角度分析,无中隔墙方案更有利于疏散;从疏散效率角度分析,中隔墙+车道底通道混合方案疏散效率更高;两种方案均满足性能化疏散设计要求,方案最终确定需要考虑其他更多因素。According to characteristics of Oujiang tunnel which is double lines in single hole,numerical simulation of fire smoke flow is conducted on different evacuation designs with FDS,and the most unfavorable fire case is decided.Based on this,the evacuation designs of Oujiang tunnel was evaluated.By analyzing the simulation results,it was concluded that evacuation scheme without central partition wall is better according to the smoke flow simulation;scheme of central partition wall+lane bottom channel has higher evacuation efficiency considering the evacuation;however,both scheme are safe in tunnel fire situation,yet more factors need to be considered.

关 键 词：铁路隧道 疏散设计 火灾模拟 疏散仿真 

分 类 号：X913[环境科学与工程—安全科学] U459.1[建筑科学—桥梁与隧道工程]