地铁站台火灾烟气扩散的盐水模型试验研究  

Test of Saltwater Model in Subway Fire Smoke Diffusion

作　　者：王太晟 王雪颖[1] 林晓巍[1] 姜昕[1] 张琳英[1] 王丽慧[1] 

机构地区：[1]上海理工大学环境与建筑学院,上海硕士研究生200093

出　　处：《城市轨道交通研究》2015年第7期90-94,98,共6页Urban Mass Transit

基　　金：国家自然科学基金项目(50908147);上海市教委重点学科建设项目(J50502);上海市大学生创新实验项目(SH1110252104)

摘　　要：为获得地铁火灾烟气在有活塞风和无活塞风影响下的扩散规律,在满足相似准则的情况下,搭建地铁站台液体缩尺模型试验台。用带颜色的水模拟火灾烟气,在获得烟气扩散现象的同时,测出烟气在典型位置处的流速分布与变化。试验结果表明,火源强度为1.5 kW时,无活塞风作用下,烟气要充满182 m×12 m×4 m的站台需180 s,乘客有120 s的时间从左、右楼梯疏散;有活塞风时烟气充满站台只需30 s,乘客仅有25 s从右侧楼梯逃生。Taisheng, Wang Xueying, Lin Xiaowei, Jiang Xin, Zhang Linying, Wang LihuiAbstract In meeting the related similarity criterion, a liquid scale model is set up to obtain the law of smoke diffusion influenced or not influ- enced by pistol wind. In the test, the fire smoke is simula- ted with colored water, the velocity rules and changes at typical location are measured when the smoke diffusion phenomenon appears. The experiment results show that when the fire intensity is 1.5 kilowatt, the platform sized 182 ~ 12 x 4 meters will be smoke filled in ~ 8（7 seconds with- out piston wind, and the passengers can be evacuated from the left and right stairs in 120 seconds. While under the in- fluence of piston wind, the platform will be smoke filled within 3（1 seconds, in this situation, passengers could only escape from the right stairs in 25 seconds.

关 键 词：地铁站台 液体缩尺模型试验台 火灾烟气扩散 

分 类 号：U231.96[交通运输工程—道路与铁道工程]