隧道口间紧急救援站防灾通风系统设置条件研究

发布时间：2018-03-28 13:19

本文选题：铁路隧道群　切入点：紧急救援站　出处：《中国安全科学学报》2017年05期

【摘要】：为合理设置长大铁路隧道群紧急救援站的防灾通风系统,采用模型试验和数值模拟的方法研究不同隧道群洞口间距(明线段长度)条件下,列车火灾烟气对相邻隧道内环境的影响,得到无需设置防灾通风系统的洞口安全距离。研究结果表明:距火源点20 m以内,列车火灾烟气对温度、可视度影响严重,50 m以外基本无影响;考虑火源蔓延车厢的长度、火灾列车安全停车距离、烟气影响范围等因素,得出隧道口紧急救援站的洞口间距(明线段长度)大于250 m时,列车火灾烟气对隧道内环境几乎无影响,可不设置防灾通风系统;该间距小于250 m时,应设置防灾通风系统。
[Abstract]:In order to reasonably set up the disaster prevention and ventilation system of emergency rescue station of long and long railway tunnel group, the method of model test and numerical simulation was used to study the conditions of different tunnel group opening spacing (length of open line). The influence of train fire smoke on the environment of adjacent tunnel is obtained. The safety distance of tunnel opening without disaster prevention and ventilation system is obtained. The results show that the temperature of train fire smoke is less than 20 m from the fire source point. It has no effect beyond 50 m, considering the length of fire spreading compartment, the safe stop distance of fire train, the influence range of smoke, etc. It is concluded that when the distance between the openings of the emergency rescue station of the tunnel entrance is more than 250m, the fire smoke of the train has little effect on the environment of the tunnel, and no disaster prevention and ventilation system can be set up, and when the distance is less than 250m, the disaster prevention and ventilation system should be set up.
【作者单位】：西南交通大学土木工程学院;西南交通大学交通隧道工程教育部重点实验室;
【基金】：国家自然科学基金资助(51308472) 西南交通大学博士研究生创新基金资助中国铁路总公司科技研究开发计划课题(2015T004-B,2014G004-C) 重庆市应用开发计划重点项目(cstc2014yykfB 30003)
【分类号】：U453.5

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