中文摘要：

随着地铁迅速发展,地铁火灾的应急救援成为火灾科学界的研究热点。本文采用火灾动力学软件FDS模拟地铁车站的烟气流场和细水雾的相互作用。通过改变楼梯上方细水雾的施加角度,分析了细水雾后方固定点烟气温度变化规律,气体浓度变化规律等。结果表明,不同施加角度的细水雾对烟气抑制效果不同,当细水雾施加角度为60°时,抑烟效果最好,有效地降低了烟气的温度和烟气层的厚度。模拟结果对有效控制烟气的蔓延和人员疏散的研究提供相关的参考。

英文摘要：

With the rapid development of the subway, the fire emergency rescue of the subway becomes more and more focused in fire field. The fire dynamics software FDS is adopted to simulate the interaction of smoke flow and water mist. By changing the angel of water mist above the stairs, the changes of the set point temperature and the change rule of gas concentration are analyzed. The results show that the water mist of different Angle has different effects of smoke suppression. When the angel is 60°, the effect of smoke suppression is the greatest, and the temperature of smoke is decreased and the thickness of the smoke layer is reduced. The results of this paper provide some references for the spread of the smoke and evacuation.