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[1]王明年,田源,于丽,等.城市综合管廊电缆火灾数值模拟及影响因素分析[J].中国安全生产科学技术,2018,14(11):52-57.[doi:10.11731/j.issn.1673-193x.2018.11.008]
 WANG Mingnian,TIAN Yuan,YU Li,et al.Numerical simulation and influencing factors analysis of cable fire in urban utility tunnel[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(11):52-57.[doi:10.11731/j.issn.1673-193x.2018.11.008]
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城市综合管廊电缆火灾数值模拟及影响因素分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
14
期数:
2018年11期
页码:
52-57
栏目:
学术论著
出版日期:
2018-11-30

文章信息/Info

Title:
Numerical simulation and influencing factors analysis of cable fire in urban utility tunnel
文章编号:
1673-193X(2018)-11-0052-06
作者:
王明年12田源12于丽12闫自海3金威3
(1. 西南交通大学 土木工程学院,四川 成都 610031;2. 西南交通大学 交通隧道工程教育部重点实验室,四川 成都 610031;3. 中国电建集团华东勘察设计研究院有限公司,浙江 杭州 311122)
Author(s):
WANG Mingnian12 TIAN Yuan12 YU Li12 YAN Zihai3 JIN Wei3
(1. School of Civil Engineering, Southwest Jiaotong University, Chengdu Sichuan 610031, China;2. Key Laboratory of Transportation Tunnel Engineering of Ministry of Education, Southwest Jiaotong University, Chengdu Sichuan 610031, China;3. POWERCHINA Huadong Engineering Corporation Limited, Hangzhou Zhejiang 311122, China)
关键词:
城市综合管廊电缆火灾FDS热释放速率截面尺寸
Keywords:
urban utility tunnel cable fire FDS heat release rate section size
分类号:
X913.4;TU990.3
DOI:
10.11731/j.issn.1673-193x.2018.11.008
文献标志码:
A
摘要:
为了研究城市综合管廊电缆火灾的发展过程及规律,为电缆舱室的火灾防治和结构设计提供参考,以义乌商城大道综合管廊工程为依托,采用火灾动力学三维模拟软件FDS建立全尺寸火灾模型,分析了电缆舱室内火灾发展过程及烟气温度分布规律,研究了舱室截面尺寸对电缆火灾热释放速率的影响规律。研究结果表明:综合管廊电缆舱室发生火灾时,点火源同侧电缆和另一侧电缆先后被引燃,火场温度较高,最大火灾热释放速率达11.2 MW。着火分区内电缆燃烧范围约为25 m,属通风控制型火灾,建议采用密闭自熄辅以自动灭火系统的消防措施。舱室净高是影响电缆火灾的发展速率及其热释放速率峰值的重要影响参数,通道宽度对电缆火灾的影响较小,建议电缆舱室通道宽度取为1 200 mm,最上层电缆距其顶板净距取为600 mm。
Abstract:
In order to study the development process and laws of cable fire in the urban utility tunnel, and provide the reference for the fire prevention and structural design of cable cabin, taking the utility tunnel engineering of Shangcheng Avenue in Yiwu as the background, a fullscale fire model was established by using the Fire Dynamics Simulator (FDS) software. The development process of fire and the distribution laws of smoke temperature in the cable cabin were analyzed, and the influence laws of the cabin section size on the heat release rate of cable fire were studied. The results showed that when a fire occurred in the cable cabin of the utility tunnel, the cables on the same side of the ignition source and on the other side were ignited successively, and the temperature of fire scene was relatively high, with the maximum heat release rate of fire as 11.2 MW. The burning range of the cables in the fire zone was about 25 m, which belonged to the type of ventilationcontrolled fire, so it was recommended to adopt the firefighting measures of the closed selfextinguishing mode supplemented by the automatic fire extinguishing system. The cabin height was an important parameter affecting the development rate and the peak value of heat release rate of cable fire, while the channel width had little effect on the cable fire. It was suggested that the channel width of cable cabin should be 1200 mm, and the distance between the top cables and the roof should be 600 mm.

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备注/Memo

备注/Memo:
收稿日期: 2018-08-22
基金项目: 四川省科技计划项目(2018JY0566)
作者简介: 王明年,博士,教授,主要研究方向为隧道及地下工程防灾救援。
通信作者: 于丽,博士,副教授,主要研究方向为隧道及地下工程防灾救援。
更新日期/Last Update: 2018-12-03