主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (5): 611-614.

• • 上一篇    下一篇

综合管廊内防火隔板对电缆火蔓延的影响

李政1，2，张国维1，2，贾伯岩3，朱国庆1，2，张鹏3   

  1. 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
  • 出版日期:2020-05-15 发布日期:2020-05-15
  • 通讯作者: 张国维（1987-），男，中国矿业大学公共安全与消防研究所副所长，副教授。
  • 作者简介:李 政（1997-），男，山西吕梁人，中国矿业大学安全工程学院硕士研究生，主要从事城市火灾防护理论及城市应急救援技术研究，江苏省徐州市泉山区大学路1号中国矿业大学南湖校区，221116。
  • 基金资助:
    国家自然科学基金青年科学基金项目（51708546）

Effect of fire barrier on the spread of cable fire in utility tunnel

LI Zheng1，2， ZHANG Guo-wei1，2， JIA Bo-yan3，ZHU Guo-qing1，2， ZHANG Peng3   

  1. 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
  • Online:2020-05-15 Published:2020-05-15

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

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.

Key words: utility tunnel, cable fire, FDS, temperature field, smoke spread, fire barrier