| 综合管廊内防火隔板对电缆火蔓延的影响 |
| |
| 引用本文： | 李政,张国维,贾伯岩,朱国庆,张鹏.综合管廊内防火隔板对电缆火蔓延的影响[J].消防科学与技术,2020,39(5):611-614. |
| |
| 作者姓名： | 李政 张国维 贾伯岩 朱国庆 张鹏 |
| |
| 作者单位： | 1.中国矿业大学 公共安全与消防研究所，江苏 徐州221116； 2.中国矿业大学 江苏省城市地下空间火灾防护高校重点实验室，江苏 徐州 221116； 3.国网河北省电力公司电力科学研究院，河北 石家庄 050000 |
| |
| 基金项目： | 国家自然科学基金青年科学基金项目（51708546） |
| |
| 摘 要： | 以苏州城北路综合管廊标准段为参考建立FDS全尺寸火灾数值仿真模型，模拟分析综合管廊电力电缆舱室发生火灾时的火势发展形势、温度分布。在管廊左、右两侧设置了4层电缆，分有、无防火隔板两个场景研究防火隔板对火势发展及温度分布的影响。结果表明：未设置防火隔板时，管廊内发生火灾时火势的发展方向首先以横向蔓延为主，顶部电缆随着火势的扩大及烟气聚集传热发生燃烧最后向管廊的其他区域蔓延。设置防火隔板后，竖向火的蔓延时间延缓了约40%，管廊内最高温度降低约18%。
|
| 关 键 词： | 综合管廊 电缆火灾 FDS 温度场 烟气蔓延 防火隔板 |
Effect of fire barrier on the spread of cable fire
in utility tunnel |
| |
| LI Zheng,ZHANG Guo-wei,JIA Bo-yan,ZHU Guo-qing,ZHANG Peng.Effect of fire barrier on the spread of cable fire
in utility tunnel[J].Fire Science and Technology,2020,39(5):611-614. |
| |
| Authors: | LI Zheng ZHANG Guo-wei JIA Bo-yan ZHU Guo-qing ZHANG Peng |
| |
| Affiliation: | 1. Public safety and Fire Research
Institute,China University of Mining and Technology, Jiangsu Xuzhou
221116,China; 2. Jiangsu Key Laboratory of Fire Safety in Urban Underground
Space,China University of Mining and Technology, Jiangsu Xuzhou 221116,China; 3.
State Grid Hebei Electric Power Research Institute, Hebei Shijiazhuang
050000,China |
| |
| Abstract: | FDS full-scale fire numerical simulation model was
established based on the standard section of the utility tunnel of Chengbei
road in Suzhou. The fire development situation and temperature distribution law
of the power cable compartment fire in the utility tunnel were simulated and
analyzed. Four layers of cables were set on the left and right sides of the
pipe gallery, the influence of the fire barrier on the fire development and
temperature distribution was studied by 2 scenarios of with or without fire
barrier. The results showed that when there is no fire barrier, the development
direction of the fire in the utility tunnel is mainly transverse spread, and the
top cable burns with the expansion of the fire and the heat transfer of smoke
accumulation,and finally spreads to other areas of the utility tunnel. The
vertical fire spread time was delayed by about 40%,and the maximum temperature
in the utility tunnel was reduced by about 18% by setting the fire barrier. |
| |
| Keywords: | utility tunnel cable fire FDS temperature field smoke spread fire barrier |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《消防科学与技术》浏览原始摘要信息 |
|
点击此处可从《消防科学与技术》下载全文 |
