含屏蔽门地铁站烟气控制系统有效性的热烟实验研究  

Hot Smoke Test for Verification of the Effectiveness of Smoke Control System in a Subway Station with shielding Doors

作　　者：钟委[1] 纪杰[2] 杨健鹏[3] 

机构地区：[1]郑州大学化工学院,河南郑州450001 [2]中国科学技术大学火灾科学国家重点实验室,安徽合肥230027 [3]河南省消防总队南阳支队,河南南阳473002

出　　处：《铁道学报》2010年第6期90-95,共6页Journal of the China Railway Society

基　　金：国家自然科学基金项目(50904055);中国科学技术大学火灾科学国家重点实验室开放课题项目(HZ2008-KF06);河南省煤矿瓦斯与火灾防治重点实验室开放

摘　　要：在深圳地铁会展中心站和岗厦站进行全尺寸火灾实验,对含屏蔽门的站台机械排烟和正压送风挡烟的有效性进行检验。实验中使用0.7MW的甲醇池火,对站台内烟气温度分布和关键位置的风速进行测量。结果表明:当站台启动排烟后,站台两侧区域烟气逐渐沉降至地面,无法排出站台而形成排烟死角,在站台两侧增加补风口后排烟效果得到明显改善。站厅正压送风挡烟效果与站台的结构密切相关,对于不含中庭的站台,采用正压送风可以有效地防止烟气向上层蔓延;对于含有中庭的地铁站台,必须通过降低挡烟垂壁的高度才能将烟气控制在起火层内。Full-scale burning tests were carried out in the Exhibition Center and the Gangxia Station of the in Shenzhen Subway to verify the effectiveness of the smoke control system.0.7 MW methanol pool fires were used in these tests;smoke temperature distribution and key-point wind velocities in the platform areas were measured.The results show as follows： Smoke on both sides of the platform descends to ground gradually during smoke extraction and induces ＂blind areas＂,the effect of smoke extraction can be improved by adding blowing vents on both sides of the platform;the effect of pressurized air supply to subway halls is closely related with the structure of the platform,i.e.,smoke can be prevented from spreading to the upper areas for those platforms without atria and the height of the smoke bay must be reduced to confine smoke in the burning area for those platforms with atria.

关 键 词：地铁火灾 热烟实验 机械排烟 正压送风 

分 类 号：U231.96[交通运输工程—道路与铁道工程]