T形电缆隧道中电缆火灾蔓延及温度分布分析Analysis on cable fire spread and temperature distribution in T-shaped cable tunnel
任广振,姜文东,余斌,吕洪坤,张晓龙,陈斌,刘安文
REN Guangzhen,JIANG Wendong,YU Bin,LYU Hongkun,ZHANG Xiaolong,CHEN Bin,LIU Anwen
摘要(Abstract):
城市电缆隧道结构复杂,通风效果差且电缆数量多,实际运行过程中存在一定的安全风险。在电缆隧道的安全事故中,火灾事故是威胁电力传输和城市安全的首要灾害。利用FDS软件,模拟了不同电缆敷设数量对T形电缆隧道中电缆火灾发生和发展的影响,分析了不同电缆敷设数量下竖井位置变化对隧道内温度分布和热释放速率的影响。分析结果可为地下T形电缆隧道的防火措施及灭火设施的设计提供参考。
The complex structure,poor ventilation as well as large number of cables impose risks to the operation of urban cable tunnels. Among the cable tunnel accidents,cable fire is the primary disaster imperiling power transmission and urban safety. FDS(fire dynamics simulator)is used to simulate the influence of underground cables on the occurrence and evolution of cable fire in T-shaped cable tunnel. Moreover,the influence of cable shaft location change brought about by the underground cable amount on temperature distribution and heat release rate(HRR)is analyzed. The results can be used as a reference for designing fire prevention and fire extinguishing devices for underground T-shaped cable tunnels.
关键词(KeyWords):
T形电缆隧道;电缆火灾;竖井;FDS数值模拟;温度场
T-shaped underground tunnel;cable fire;shaft;FDS numerical simulation;temperature field
基金项目(Foundation):
作者(Author):
任广振,姜文东,余斌,吕洪坤,张晓龙,陈斌,刘安文
REN Guangzhen,JIANG Wendong,YU Bin,LYU Hongkun,ZHANG Xiaolong,CHEN Bin,LIU Anwen
DOI: 10.19585/j.zjdl.202211011
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- T形电缆隧道
- 电缆火灾
- 竖井
- FDS数值模拟
- 温度场
T-shaped underground tunnel - cable fire
- shaft
- FDS numerical simulation
- temperature field