| 铁路主隧道与斜井风流耦合作用下的火灾模型试验研究 |
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| 引用本文： | 李琦,王明年,李自强,于丽,严涛,谢文静.铁路主隧道与斜井风流耦合作用下的火灾模型试验研究[J].铁道学报,2019(10):99-106. |
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| 作者姓名： | 李琦 王明年 李自强 于丽 严涛 谢文静 |
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| 作者单位： | 四川农业大学建筑与城乡规划学院;西南交通大学土木工程学院;西南交通大学交通隧道工程教育部重点实验室;重庆科技学院建筑工程学院 |
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| 基金项目： | 国家自然科学基金(51908387,51908098,51508475);四川省科技计划(2018JY0566);四川省科技厅科技创新项目(2018RZ0109) |
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| 摘 要： | 为研究铁路隧道中主隧道与斜井风流在火灾模式下的相互影响,分别对不同主隧道风速、斜井风速以及火灾规模等组合情景下的铁路隧道火灾进行燃烧模型试验。研究结果表明:火灾规模越大,隧道拱顶处最高温度越高,与火灾规模15MW相比,火灾规模20MW的最高温度升高130℃;与主隧道内通风2.5m/s相比,不通风时拱顶最高温度升高140℃,且后者主隧道内火灾烟气更易侵入斜井;斜井向主隧道送风风速越大,含斜井主隧道段内的拱顶温度越低;与不送风相比,斜井送风风速为3m/s时火源拱顶最高温度约降低80℃,不含斜井主隧道段内拱顶温度变化不明显;斜井送风风速越大,烟气进入斜井内的长度越短,与不送风相比,斜井内送风风速为1m/s时斜井内烟气长度减少74m;保证主隧道火灾烟气不侵入斜井的临界风速为2m/s。
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| 关 键 词： | 铁路隧道 斜井 火灾试验 数值计算 温度分布 烟流长度 临界风速 |
Study on Fire Model Test under Wind Flow Coupling Effect between Railway Main Tunnel and Inclined Shaft |
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| LI Qi,WANG Mingnian,LI Ziqiang,YU Li,YAN Tao,XIE Wenjing.Study on Fire Model Test under Wind Flow Coupling Effect between Railway Main Tunnel and Inclined Shaft[J].Journal of the China railway Society,2019(10):99-106. |
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| Authors: | LI Qi WANG Mingnian LI Ziqiang YU Li YAN Tao XIE Wenjing |
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| Institution: | (College of Architecture and Urban-rural Planning,Sichuan Agricultural University, Dujiangyan 611830, China;School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;Key Laboratory of Transportation Tunnel Engineering,Ministry of Education,Southwest Jiaotong University, Chengdu 610031, China;School of Civil Engineering and Architecture, Chongqing University of Science & Technology, Chongqing 401331, China) |
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| Abstract: | LI Qi;WANG Mingnian;LI Ziqiang;YU Li;YAN Tao;XIE Wenjing(College of Architecture and Urban-rural Planning,Sichuan Agricultural University, Dujiangyan 611830, China;School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;Key Laboratory of Transportation Tunnel Engineering,Ministry of Education,Southwest Jiaotong University, Chengdu 610031, China;School of Civil Engineering and Architecture, Chongqing University of Science & Technology, Chongqing 401331, China) |
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| Keywords: | railway tunnels inclined shaft fire test numerical calculation temperature distribution smoke flow length critical wind speed |
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