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%。
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.
作者
李政
张国维
贾伯岩
朱国庆
张鹏
LI Zheng;ZHANG Guo-wei;JIA Bo-yan;ZHU Guo-qing;ZHANG Peng(Public safety and Fire Research Institute,China University of Mining and Technology,Jiangsu Xuzhou 221116,China;Jiangsu Key Laboratory of Fire Safety in Urban Underground Space,China University of Mining and Technology,Jiangsu Xuzhou 221116,China;State Grid Hebei Electric Power Research Institute,Hebei Shijiazhuang 050000,China)
出处
《消防科学与技术》
CAS
北大核心
2020年第5期611-614,共4页
Fire Science and Technology
基金
国家自然科学基金青年科学基金项目(51708546)。
