地铁车站出入口火灾烟气特性的模拟研究  

Study on Fire Smoke Properties of Subway Station Passageway by Simulation Experiments

作　　者：朱伟[1] 卢平[1] 廖光煊[1] 厉培德[1] 洪亦修[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,合肥230026

出　　处：《中国工程科学》2005年第2期91-96,共6页Strategic Study of CAE

基　　金：国家自然科学基金专项基金资助项目 (5 0 3 2 3 0 0 5 )

摘　　要：利用木垛火模拟地铁火灾的演化过程 ,在地铁车站出入口的缩尺度模型中进行模拟实验。采用温度相对值 ,分析地铁火灾沿车站出入口烟气温度下降的规律及其影响因素。通过实验图像 ,对烟气分层所需条件以及区域模拟方法在地铁火灾烟气特性研究中的适用性进行了讨论。气体成分测量结果表明 。A series of simulation experiments, carried out on the scale model of subway station passageway are described, in which wood crib fires are used as the evolvement process of subway fire. Temperature relative value is provided t o analyze the law of smoke temperature along the station passageway in subway fi re and its affecting factors. Based on images collected, the conditions needful for coming into being smoke layer and the applicability of zone model are discus sed in the investigation of smoke properties in subway fire. Otherwise, it is al so indicated from the results of smoke component measurements that CO concentrat ion at the exit rises with stepwise change.

关 键 词：地铁火灾 缩尺度模型 烟流温度 烟气形态 

分 类 号：X928.7[环境科学与工程—安全科学]