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地铁车站发生火灾时,其燃烧产生的烟气和毒害物质的扩散容易造成大量人员伤亡。本文针对某地铁双岛四线车站的站台区和站台行车区发生火灾时排烟系统的有效性进行了数值分析,通过计算火灾烟气扩散过程和分析烟气控制效果,验证了站厅层送风,站台区、隧道事故风机及隧道轨顶协同排烟模式的有效性。研究结果可以为地铁双岛式车站排烟系统的定量设计提供参考。
When a fire breaks out at a metro station, a large number of casualties are easily caused by the proliferation of flue gas and poisonous substances generated by its combustion. In this paper, a numerical analysis is made of the effectiveness of the smoke evacuation system in the station area and the platform driving area of a subway station at Shuangdao Subway. By calculating the diffusion process of fire smoke and analyzing the flue gas control effect, Wind, platform area, tunnel accident fan and tunnel roof synergetic exhaust mode effectiveness. The research results can provide a reference for the quantitative design of smoke exhaust system in Metro Shuangdao station.