单洞双线隧道火灾疏散时临界风速实验研究
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摘要
以青岛崂山隧道为研究对象,搭建中尺寸单洞双线隧道实验平台,研究了列车发生火灾时,不同纵向风速对烟气扩散和人员疏散的影响。实验结果表明,单洞双线隧道发生火灾时,火源上方隧道顶棚区域附近温度最高并向两侧呈递减分布;垂直方向,火源两侧的烟气温度从上至下呈递减分布;在隧道发生火灾时能实现列车人员安全疏散的临界纵向风速为3 m/s。
Taking Qingdao Laoshan Tunnel as the research object,the influences of different longitudinal wind speeds on the smoke diffusion and personnel evacuation in the event of a train fire were studied by building a medium-size single-hole double-track tunnel experimental platform. The results showed that, during the fire accident in the single-hole double-track tunnel, the maximum smoke temperature located near the tunnel roof area above the fire source,and the smoke temperature decreased to the two sides; the smoke temperatures on both sides of the fire source were decreasing distribution from ceiling to floor on the vertical direction; the critical longitudinal wind speed for the personnel safe evacuation was 3 m/s during a train fire in the tunnel.
Taking Qingdao Laoshan Tunnel as the research object,the influences of different longitudinal wind speeds on the smoke diffusion and personnel evacuation in the event of a train fire were studied by building a medium-size single-hole double-track tunnel experimental platform. The results showed that, during the fire accident in the single-hole double-track tunnel, the maximum smoke temperature located near the tunnel roof area above the fire source,and the smoke temperature decreased to the two sides; the smoke temperatures on both sides of the fire source were decreasing distribution from ceiling to floor on the vertical direction; the critical longitudinal wind speed for the personnel safe evacuation was 3 m/s during a train fire in the tunnel.
引文
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[2]KURIOKA H,OKA Y.Fire properties in near field of square fire source with longitudinal ventilation in tunnels[J].Fire Safety Journal,2003,38(4):319-340.
[3]任神河,韩凯旋.地铁隧道火灾纵向通风临界风速的确定[J].现代电子技术,2012,35(9):132-134.
[4]冯凯.火源尺寸对地铁隧道火灾临界风速的影响[J].消防科学与技术,2013,32(8):860-863.
[5]史聪灵,钟茂华,何理,等.地铁车站及隧道全尺寸火灾实验研究(1)-实验设计[J].中国安全生产科学技术,2012,8(6):22-28.
[6]史聪灵,钟茂华,汪良旗,等.地铁车站及隧道全尺寸火灾实验研究(2)——区间隧道火灾[J].中国安全生产科学技术,2012,8(8):28-34.
[7]高锴,李立明.火灾时隧道截面高宽比对临界风速的影响研究[J].消防科学与技术,2017,36(5):624-628.
[8]程婧园.隧道火灾临界风速计算公式的比较分析[J].消防科学与技术,2013,32(3):252-255.
[9]周庆,倪天晓,彭锦志,等.隧道火灾烟气回流与临界风速模型试验[J].消防科学与技术,2011,30(7):580-583.
[10]王君,赵蕾,齐江浩.阻塞效应下隧道火灾临界风速的模型试验研究[J].安全与环境学报,2016,16(3):62-68.
[11]史聪灵,钟茂华,汪良旗,等.地铁车站及隧道全尺寸火灾实验研究(3)——车站隧道火灾[J].中国安全生产科学技术,2013,9(3):26-33.