基于高压电缆燃烧试验的电缆隧道末端火灾模拟  

Fire Simulation at the End of Cable Tunnel Based on HV Cable Burning Test

作　　者：王舒寒 张永康 王玲 汤敏吉 陈艳羚 王承 臧建彬[2] WANG Shuhan;ZHANG Yongkang;WANG Ling;TANG Minji;CHEN Yanling;WANG Cheng;ZANG Jianbin(State Grid Cable Branch,SMEPC,Shanghai 200072,China;School of Mechanical and Energy Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]国网上海市电力公司电缆分公司,上海200072 [2]同济大学机械与能源工程学院,上海200092

出　　处：《电力与能源》2023年第3期233-238,267,共7页Power & Energy

摘　　要：为研究地下电缆隧道火灾的具体危害性,首先通过锥形量热仪对高压电缆进行燃烧试验,然后将试验所得数据代入FDS仿真软件,对地下电缆隧道末端的电缆火灾进行模拟验证,研究电缆隧道末端火灾的火势发展及烟气扩散、能见度变化、CO生成量、温度变化等的规律。结果表明:电缆隧道末端火灾前期的大量烟气来自高压电缆的阴燃阶段,烟气的蔓延速度极快;由于浮升力的作用,在电缆隧道高度方向上的温度呈上升趋势;电缆隧道内的烟气温度和CO含量的峰值并不在火源位置处,而是距火源有一定的距离;越靠近电缆隧道末端,其温度和CO含量越低。In order to study the specific hazards of underground cable tunnel fire,the conical calorimeter was used to carry out the combustion test of high voltage cable,and the data obtained from the test were input into the FDS simulation software to simulate and verify the cable fire at the end of the underground cable tunnel.The fire development and smoke diffusion,visibility change,CO production and temperature change rule of the cable tunnel end firewe were studied.The results showed that a large amount of smoke at the end of cable tunnel in the early stage of fire comed from the smoldering stage of high voltage cable,and the smoke spreaded very fast.Due to the effect of buoyancy,the temperature in the height direction of the cable tunnel tended to rise.The peak of flue gas temperature and CO content in the cable tunnel was not at the location of the fire source,but there was a certain distance from the fire source:the closer to the end of the cable tunnel,the lower the temperature and CO content.

关 键 词：电缆隧道 火灾蔓延 燃烧试验 数值模拟 

分 类 号：TM75[电气工程—电力系统及自动化] U458[建筑科学—桥梁与隧道工程]