地铁站厅两个防烟分区情况下不同排烟模式的研究

Study on Different Smoke Exhaust Modes in Two Smoke Control Zones of Metro Station Hall

在地铁站厅层公共区分为两个防烟分区的情况下,为研究相邻防烟分区的排烟措施对排烟效果及逃生环境的影响,文章采用FDS软件模拟了6种工况,把火源分别设置在两个防烟分区的交界处和一端,相邻防烟分区的排烟系统分别设置为开启、关闭、收到火灾信号后开启的情况。通过对比6种工况下的烟气层高度、安全高度处的烟气温度和能见度,得出在站厅层公共区有两个防烟分区的情况下,若发生火灾应同时开启两个防烟分区的排烟设备。

In order to study the influence of smoke exhaust measures on smoke exhaust effect and the escape environment in adjacent smoke control zones,six working conditions were simulated by FDS in this paper.The fire source is set at the junction and one end of the two smoke control zones,and the smoke exhaust system of the adjacent smoke control zones is set to open,close,and open after receiving the fire signal.By comparing the smoke temperature and visibility at the height of the smoke layer and the safe height under six working conditions,it is concluded that there are two smoke-proof zones in the common area of the station hall floor.It is recommended to open the smoke exhaust equipment in two smoke control zones at the same time when a fire occurs.