自动挡烟垂壁对隧道火灾的控制研究

Study on the Effect of Automatic Smoke Screen on Tunnel Fire

为了了解自动挡烟垂壁对隧道火灾烟流的影响,本文借助火灾模拟软件FDS,采用对比分析法,以武汉市过江隧道为背景进行模拟试验研究,结果表明火灾时自动挡烟垂壁对隧道内的烟气扩散和温度分布都有较好的控制效果,还可以减小横向风速对上层烟气的干扰和烟气回流,可以作为控制隧道火灾的一种有效方法。

In order to acquire the effect of automatic smoke screen on tunnel fires,this study applies fire dynamics software（FDS）developed by American National Institute of Standards and Technology.Adopting the method of comparative analysis,the study conducts the simulation analysis on Wuhan Tunnel under the river.The results indicate that smoke screen can not only effectively restrain the smoke propagation and temperature distribution in tunnel fires,but also reduce the upper smoke＇s effects of cross winds and the smoke reflux.Therefore it can be used as a measure of controlling tunnel fires.