城市公路隧道火灾规模确定方法研究
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- 英文论文题名：Study on the Method of Determining the Scale of Fire in Urban Highway Tunnel
- 论文作者：闫自海
- 英文论文作者：YAN Zihai ; Huadong Engineering Coropration Limited
- 年：2016
- 作者机构：中国电建集团华东勘测设计研究院有限公司;
- 论文关键词：城市隧道 ; 火灾规模 ; 阻塞 ; 车辆引燃间距 ; 概率分布
- 英文论文关键词：Urban highway tunnel ; Fire scale ; Block ; Vehicle ignition distance ; Probability distribution
- 会议召开时间：2016-10-24
- 会议录名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会论文集
- 语种：中文
- 分类号：U458
- 学会代码：OGTY
- 会议名称：2016中国隧道与地下工程大会（CTUC）暨中国土木工程学会隧道及地下工程分会第十九届年会
- 会议地点：中国四川成都
- 主办单位：中国土木工程学会隧道及地下工程分会
- 学会名称：中国土木工程学会
- 页数：6
- 文件大小：1595k
- 原文格式：O
- 会议级别：全国
摘要
依托杭州紫之隧道工程,结合城市交通流特点,提出了确定城市隧道火灾规模的方法。通过对公路隧道火灾案例分析,明确车辆自燃为隧道火灾的主要原因;通过理论计算,确定了隧道阻塞工况下不同火灾规模的引燃距离;通过数值模拟,得到紫之隧道人员疏散时间为420 s,作为确定火灾规模的时间标准。在人员疏散时间内,小客车不能引燃相邻车辆,中客车与公共汽车可以引燃横向车辆。基于公交车在三车道隧道内的中车道自燃为车辆自燃的最不利工况,根据实际交通组成比例,采用概率统计的方法对公共汽车横向引燃车辆组成及事件概率进行分析,表明三车道隧道内被引燃车辆组成为四辆小车的概率较大,达到0.83,紫之隧道主隧道火灾规模设定为30 MW。
Based on the Hangzhou Zhizhi tunnel,and combined with the characteristics of city traffic flow,it proposes a method to determine the size of the city tunnel fire.By analyzing the case of highway tunnel fire,vehicle ignition is the main reason for the tunnel fire;through theoretical calculation,it determines the ignition distance of different fire scale in traffic blocking condition;based on numerical simulation,the evacuation time of Zizhi tunnel is 420 s,it is regard as the standards to determine the fire scale.In the evacuation time,the result shows that small passenger vehicles can not ignite the lateral vehicle,passenger car and bus can ignite the lateral vehicle.The bus self-ignition in the middle lane is the most unfavorable conditions,according to the actual traffic composition,using the method of probability and statistics,the composition of the lateral vehicle ignited by bus and the event probability is analyzed.The result shows that in the three lane tunnel,when the composition of the lateral vehicle ignited by bus is four cars,the event probability is the largest,the value is 0.83.The fire scale of Zizhi tunnel is 30 MW.
Based on the Hangzhou Zhizhi tunnel,and combined with the characteristics of city traffic flow,it proposes a method to determine the size of the city tunnel fire.By analyzing the case of highway tunnel fire,vehicle ignition is the main reason for the tunnel fire;through theoretical calculation,it determines the ignition distance of different fire scale in traffic blocking condition;based on numerical simulation,the evacuation time of Zizhi tunnel is 420 s,it is regard as the standards to determine the fire scale.In the evacuation time,the result shows that small passenger vehicles can not ignite the lateral vehicle,passenger car and bus can ignite the lateral vehicle.The bus self-ignition in the middle lane is the most unfavorable conditions,according to the actual traffic composition,using the method of probability and statistics,the composition of the lateral vehicle ignited by bus and the event probability is analyzed.The result shows that in the three lane tunnel,when the composition of the lateral vehicle ignited by bus is four cars,the event probability is the largest,the value is 0.83.The fire scale of Zizhi tunnel is 30 MW.
引文
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[6]王祺,李力,胡坚明,邹斌.不同车头间距下交通流的速度分布[J].清华大学学报,2011,51(3):309-312.WANG qi,LI Li,HU Jianming,ZOU Bin.Traffic velocity distributions for different spacings[J].Journal of Tsinghua University,2011,51(3):309-312.
[2]Okamoto,Katsuhiro,et.al.Burning behavior of sedan passenger cars[J].Fire Safety Journal,2009,44(3):301-310.
[3]Okamoto,Katsuhiro,et.al.Burning behavior of minivan passenger cars[J].Fire Safety Journal,2013,62:272-280.
[4]PIARC C O R T.Fire and Smoke Control in Road Tunnels[R].France:PIARC:1999.
[5]兰锦安,胡伟,谭海,张英.受限空间内高温辐射对火灾规模增长特性的影响[J].燃烧科学与技术,2013,19(6):562-566.LAN Jin'an,HU Wei,TAN Hai,ZHNG Ying.Effects of Thermal Radiation on Growth Characteristics of Fire Scale in Limited Space[J].Journal of Combustion Science and Technology,2013,19(6):562-566.
[6]王祺,李力,胡坚明,邹斌.不同车头间距下交通流的速度分布[J].清华大学学报,2011,51(3):309-312.WANG qi,LI Li,HU Jianming,ZOU Bin.Traffic velocity distributions for different spacings[J].Journal of Tsinghua University,2011,51(3):309-312.