运行地铁列车应急排烟模式的研究

通过初生婴儿的头围确定车门开度的上限值,利用气体动力学与燃烧学理论建立了地铁列车在隧道发生火灾时的数值分析模型,采用FLUENT软件模拟了地铁列车在不同速度、不同开门方案下,排烟所需时间及车厢内外压强分布.结果表明,列车车门开度0.07m、车速为30 km/h时,能够快速、有效地排出烟雾.在深圳地铁“世界之窗-赤湾”2号线对数值分析结果进行了试验验证.试验结果与数值分析结果吻合,表明该应急排烟模式的数值分析方法具有较高精度.

Research of Emergency Smoke Exhausting in Running Subway Train

Taking head circumference of infants as the higher limit,numerical models of subway train getting fire in tunnel were established based on gas dynamics and combustion theory with the software FLUENT.Smoking-exhausting required time and pressure inside and outside of the train with different speed and opening door scheme was simulated,which showed that the smoke inside the railway carriage could be rapidly exhausted when the door opening degree was 0.07 m and the speed was 30 km/h.Experiment result in the Window of the world and the chiwan 2 Line of Shenzhen metro was consistent with numerical approach,which indicated numerical analysis for emergency smoke-exhausting mode was reliable with high accuracy.