地铁排烟风亭与出入口合理的相对位置  

Numerical Simulation of Reasonable Relative Position of Smoke Tower and Passageway of Subway Station

作　　者：顾正洪[1] 程远平[1] 周世宁[1] 

机构地区：[1]中国矿业大学能源与安全工程学院,江苏徐州221008

出　　处：《西南交通大学学报》2005年第5期591-594,共4页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(50174052)

摘　　要：为防止发生地铁火灾时排烟风亭排出的烟气通过出入口倒流回车站,用FDS(火灾动力学模拟器)场模拟软件对火灾发生时排烟口烟气蔓延、分布规律及其影响因素进行了研究.模拟结果表明:排烟风亭排出的烟气倒流回出入口的可能性大小与烟气温度、其与出入口的空间距离、自然风的方向和大小等因素有关.现场试验结果证实了模拟结果的正确性.FDS （fire dynamics simulator）, a field simulation software, was used to investigate the spread regularity of smoke and its influencing factors in order to determine the reasonable relative position of smoke tower and passageway of a subway station to prevent the smoke extracted through the smoke tower when a subway fire occurs running back into the station. The simulation results indicates that the possibility that the smoke extracted through a smoke tower runs back into a subway station through its passageway is related to smoke temperature, spatial distance between a smoke tower and a passageway, and direction and strength of nature wind and so on. A field experiment shows the availability of the simulation results.

关 键 词：地铁火灾 烟气 排烟风亭 出入口 数值模拟 

分 类 号：X932[环境科学与工程—安全科学]