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首页> 外文期刊>Tunnelling and underground space technology >Analysis of smoke movement in the Hsuehshan tunnel fire
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Analysis of smoke movement in the Hsuehshan tunnel fire

机译：雪山隧道火灾中烟气运动分析。

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摘要

In 2012, a serious fire accident occurred in the Hsuehshan southbound road tunnel, which resulted in two fire fatalities and 34 injuries. A pickup truck was hit by a bus from behind; gasoline leaked from the bus and started the fire. Smoke was diverted from the southbound tunnel into the service tunnel and the northbound tunnel via two connection tunnels. Fire dynamics simulator (FDS) software was used to simulate the smoke movement in the 13 km long southbound road tunnel, employing more than 21 million computational cells. The heat release rate curve used in the simulation was based on a single bus fire which reached a maximum value of 30 MW. The smoke front movement obtained from the computer simulation was compared with that determined from the closed circuit TV (CCTV) recordings, and the agreement between the simulation results and CCTV recordings was sound. The critical velocity for controlling backlayering of a 30 MW bus fire was also determined from simulation, which agreed well with the value estimated from empirical correlations of model experiments. This research showed that during a fire, doors to connection tunnels should close automatically, and the service tunnel should only be used for emergency rescue purpose, instead of evacuation of people.
机译：2012年，雪山南行公路隧道发生严重火灾事故，造成2人死亡，34人受伤。一辆皮卡车从后面被一辆公共汽车撞了。汽油从公交车上漏出并起火。烟雾通过两个连接隧道从南行隧道转移到服务隧道和北行隧道。火灾动态模拟器（FDS）软件用于模拟烟尘在13公里长的南行公路隧道中的运动，使用了超过2100万个计算单元。模拟中使用的放热率曲线是基于单根总线着火，最大值达到30 MW。将通过计算机模拟获得的烟雾前沿运动与通过闭路电视（CCTV）记录确定的烟雾运动进行了比较，并且模拟结果与CCTV记录之间的一致性是良好的。还通过仿真确定了控制30 MW公交车着火的临界速度，这与模型实验的经验相关性估算的值非常吻合。研究表明，在发生火灾时，连接隧道的门应自动关闭，而服务隧道仅应用于紧急救援目的，而不能疏散人员。

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