屏蔽门对岛式站台隧道火灾烟气扩散的影响  

The Impact of Screen Doors on Smoke Spread of Tunnel Fire in Island Subway Platform

作　　者：张培红[1] 张帅[1] 于谨[1] 

机构地区：[1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2007年第5期794-797,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家外专局引智项目(20072100244);辽宁省教育厅重点实验室开放基金项目(HJ-200606)

摘　　要：目的分析地铁列车前部发生火灾功率为7.5 MW的火灾情况下,屏蔽门开启数量的不同对火灾烟气扩散的影响.方法运用FLUENT软件对列车前部起火的隧道火灾进行了模拟,选择了屏蔽门全部开启和关闭靠近火源一侧的8个屏蔽门两种情况进行了数值模拟,并对模拟结果进行了比较分析.结果关闭靠近火源一侧的部分屏蔽门,可以使烟气得到更好地控制,扩散到站台的烟气量较少,更利于人员的疏散.结论在发生隧道火灾时,合理地选择屏蔽门开启数量可以为地铁站台内人员的疏散创造有利的条件.On the condition of the intensity of tunnel fire 7.5MW,the different opening modes of screen doors and its impacts on smoke spread in island subway platform was analyzed.The tunnel fire happened in the head part of the train is simulated by FLUENT.On different condition,say,all screen doors opened and eight screen doors closed near fire,fire simulation was processed respectively,with the comparison-analyzing afterwards.In the situation of partly-open-screendoors,smoke was under control more efficiently,with less spread to platforms,which was better for the evacuation.When fire occurred in the tunnel,reasonable opening rates of screen doors will play an important role to the safety evacuation in subway tunnel fire.

关 键 词：屏蔽门 岛式站台 隧道火灾 烟气扩散 疏散 

分 类 号：TU976.9[建筑科学] X928.7[环境科学与工程—安全科学]