摘要
随着我国经济的迅猛发展,我国隧道工程技术突飞猛进,不仅克服了多种复杂难题,并且无论是隧道长宽比还是建造难度上都处于世界领先水平,然而由于隧道火灾事故具有起火点移动性、火灾蔓延快速性、火灾烟气流动性、安全疏散局限性以及灭火救援艰难性等特点,导致隧道火灾严重危害人们的生命财产安全。因此本文运用FDS火灾模拟软件,建立1:1区间隧道火灾模型,在隧道顶棚位置布置一排高压细水雾灭火系统,通过设置3组喷头雾化角度,比较了不同角度下细水雾对隧道火灾的作用效果,根据模拟结果分析后发现,高压细水雾灭火系统对隧道顶棚处温度和火源边缘处热辐射有显著的降低效果。
With the rapid development of China's economy,China's tunnel engineering technology has advanced by leaps and bounds.It has not only overcome a variety of complex problems,but also is at the world leading level in terms of tunnel length width ratio and construction difficulty.However,due to the characteristics of tunnel fire accidents,such as the mobility of fire point,the rapidity of fire spread,the fluidity of fire smoke,the limitations of safe evacuation and the difficulty of fire fighting and rescue,It leads to tunnel fire and seriously endangers people's life and property safety.Therefore,this paper uses FDS fire simulation software to establish a 1:1 interval tunnel fire model.A row of high-pressure water mist fire extinguishing system is arranged at the tunnel ceiling.By setting three groups of nozzle atomization angles,the effect of water mist on tunnel fire at different angles is compared.According to the analysis of the simulation results,it is found that the high-pressure water mist fire extinguishing system has a significant reduction effect on the temperature at the tunnel ceiling and the heat radiation at the edge of the fire source.
作者
李佳
Li Jia(School of safety science and engineering,Anhui University of technology,Huainan 232001,China)
出处
《科学技术创新》
2022年第17期93-96,共4页
Scientific and Technological Innovation
关键词
数值模拟
隧道火灾
高压细水雾灭火系统
雾化角度
Numerical simulation
Tunnel fire
High pressure water mist fire extinguishing system
Atomization angle
