摘要
采用计算机模拟技术对公路隧道火灾时竖井设置情况对自然排烟效果的影响进行研究。分析竖井自然排烟时隧道内的温度场、竖井排烟量等参数。结果表明,在竖井总横截面面积保持不变的情况下,竖井数量较少时容易排出大量的冷空气,排烟效率低;竖井数量较多时对排烟比较有利。
The effect of layout of vertical shaft on natural smoke exhaust of city underground tunnel in fire was researched by computer simulation.The temperature field in tunnel and the smoke exhaust amount were analyzed.The results showed that more cold air was vented when the tunnel has less vertical shaft when the total cross section area was certain,the efficiency of smoke exhaust was inefficient.More vertical shafts were good for smoke exhaust.
出处
《消防科学与技术》
CAS
北大核心
2013年第6期598-601,共4页
Fire Science and Technology
关键词
隧道火灾
竖井
自然排烟
数值模拟
tunnel fire
vertical shaft
natural smoke exhaust
numerical simulation
