高海拔铁路隧道火灾燃烧特性试验研究  

Experimental Study on Combustion Characteristics of Fire in High-altitude Railway Tunnels

作　　者：张念[1] 谭忠盛[1] 毛军[1] 万飞[1] 郭峰[1] 

机构地区：[1]北京交通大学土木建筑工程学院,北京100044

出　　处：《中国安全科学学报》2011年第12期52-57,共6页China Safety Science Journal

基　　金：铁道部科技研究开发计划重点课题(KCD09002531)

摘　　要：采用火灾模型试验的研究方式,在高海拔特长铁路隧道——关角隧道(32.645 km)的斜井内进行火灾燃烧的全尺寸模型试验,测得不同火灾规模条件下隧道内温度和烟气分布,通过分析试验结果,得到高海拔隧道火灾的燃烧特性。研究结果表明:隧道拱顶处温度高于隧道中心线附近温度;火源附近温度最高,隧道内各位置温度随着距火源点距离增加而降低;纵向风速对隧道内烟气分布有重要影响,火源下游温度高于上游温度。结合试验的分析结果,就高海拔隧道火灾防灾救援设计提出建议。Full-scale model tests were conducted in the slope of Guanjiao Tunnel（32.645 km）,which is a high-altitude super-long railway tunnel,to research the burning characteristics of high-altitude tunnel fire.The distribution of the temperature and smoke under different fire-scale conditions inside the tunnel was measured.Analysis on the experimental results showed that temperature at the tunnel vault was higher than temperature near the tunnel centerline;temperature near the fire was highest;with the distance to the fire increasing,temperature decreased;longitudinal wind had an important influence on smoke distribution,temperature at downstream was higher than that at upstream.Finally,some recommendations to the fire disaster-relief design of the high-altitude tunnel were put forward according to the analysis of test results.

关 键 词：高海拔 隧道火灾 模型试验 燃烧特性 温度分布 烟气 

分 类 号：X932[环境科学与工程—安全科学]