地铁列车区间隧道着火时行车安全性的讨论  

Discussion about Safe Velocity of On-fire Train in Subway Tunnel

作　　者：屈璐[1] 陈超[1] 杨英霞[1] 任明亮[1] 

机构地区：[1]北京工业大学

出　　处：《地下空间与工程学报》2007年第5期832-836,共5页Chinese Journal of Underground Space and Engineering

基　　金：北京市"供热;供燃气;通风及空调工程"重点实验室资助

摘　　要：当地铁列车在区间隧道内发生火灾时,现行的关于地铁列车区间隧道着火时的应急对策是:如果列车的条件允许,尽量驶到下一个车站,利用前方车站疏散乘客。本研究运用计算流体力学(CFD)的方法,对运行中地铁列车周围不同部位的相对风速及其速度场分布特性进行了模拟分析;重点讨论了当地铁列车区间隧道着火时,考虑到风助火势的影响,行进中地铁列车的行驶速度对火势蔓延的影响;进而对地铁列车区间隧道着火时的安全行驶速度进行了初步的探讨。In this paper, the countermeasures for subway tunnel fire nowadays are introdnced and a study with computational fluid dynamics （ CFD ） simulations on the velocity field around a moving train in subway tunnel is carried out. Detailed analyses of relative velocity and fluid characteristic have been carried out for the Beijing subway loop line tunnel. Moreover, it also discussed the problem about influence of wind velocity to fire scale and the safe velocity for running to next station when the train was in fire, which will be a useful reference for improvement of subway fire mode.

关 键 词：地铁列车 区间隧道 火灾 安全行驶速度 数值模拟 

分 类 号：U456.32[建筑科学—桥梁与隧道工程]