摘要
近年来我国公路隧道的建设迅速发展,然而公路隧道由于空间相对封闭,发生火灾情况下的烟气排除成为了难点。结合公路隧道通风排烟方式,探讨临界风速在隧道火灾排烟时的应用,并分析了公路隧道纵向空气流对火灾烟气流动的影响,指出不同流速的空气流对火灾烟气的影响效果不同,同时阐述了隧道内移动风机的气流环流现象。最后提出了基于不同火灾位置的排烟方案,为消防部队隧道火灾的排烟战术提供参考。
In recent years,the construction of highway tunnels in China has been rapidly built. Due to the structural characteristics,however,the discharge of the fire smoke becomes a difficult issue in these tunnels. Based on the ventilation and smoke extraction mode of a highway tunnel fire,the critical velocity is discussed,and the influence of the longitudinal air flow to fire smoke flow is analyzed. The method and principle of discharging tunnel fire smoke with mobile smoke ventilation fans are discussed,and the circumfluent flow has been taken into account. Different ways of smoke charging during different positions of fire source are put forward,which offer the fire forces a reference of mobile smoke ventilation tactics on tunnel fires.
出处
《武警学院学报》
2014年第10期27-31,共5页
Journal of the Armed Police Academy
基金
公安部消防局重点攻关项目(2014XFGG02)
关键词
公路隧道
火灾
烟气流动
临界风速
移动式排烟
traffic tunnel
fire
smoke flow
critical velocity
mobile smoke ventilation
