排烟口对地铁隧道火灾机械排烟效果影响研究  

Influence of Smoke Outlet on Mechanical Smoke Exhaust Effect of Subway Tunnel Fire

作　　者：江荷 朱常琳[1,2] 李胜涛 邓信青 JIANG He;ZHU Chang-lin;LI Sheng-tao;DENG Xin-qing(School of Building Services Science and Engineering,Xi’an University of Architecture and Technology;Shanxi Provincial Key Laboratory of Environmental Engineering,Xi’an University of Architectural and Technology)

机构地区：[1]西安建筑科技大学建筑设备科学与工程学院 [2]西安建筑科技大学陕西省环境工程重点实验室

出　　处：《建筑热能通风空调》2020年第3期73-77,共5页Building Energy & Environment

基　　金：陕西省教育厅自然科学基金项目(16JK1469)。

摘　　要：利用火灾动力学仿真软件FDS研究了排烟口面积和排烟口长宽比对地铁区间隧道火灾排烟效果的影响(火源功率为5 MW)。即对不同工况下,人眼特征高度层温度,CO浓度,能见度以及顶棚温度进行研究并进行对比分析。结果表明:排烟口面积为4m^2、排烟口长宽比1:1更有利于人员疏散。The effect of exhaust area and ratio of length to width of smoke outlet on smoke exhaust effect in semi-transverse smoke exhaust mode in subway tunnel fire(fire power is 5 MW) was studied by using fire dynamics simulation software FDS, that is, under different working conditions. Human eye characteristic height layer temperature,CO concentration, visibility and ceiling temperature were studied and compared. The results show that the area of the exhaust outlet is 4 m^2, and the length-to-width ratio of the exhaust outlet is 1:1, which is more conducive to evacuation.

关 键 词：火灾动力学 半横向排烟 排烟效果 人员疏散 

分 类 号：U453.5[建筑科学—桥梁与隧道工程] U231.96[交通运输工程—道路与铁道工程]