水喷雾系统对隧道火灾烟气控制影响分析  

Influence Analysis on Controlling Smoke and Fire with Spraying Water-mist System in Tunnel

作　　者：宋永超[1] Song Yongchao(China Railway Siyuan Survey and Design Group Co.Ltd.,Wuhan Hubei 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,湖北武汉430063

出　　处：《铁道建筑技术》2018年第11期93-97,共5页Railway Construction Technology

摘　　要：由于水喷淋系统在隧道火灾中会导致烟气下沉、弥漫整个空间、影响人员疏散等不利因素,通过采用水喷雾对隧道进行保护,并对模型基本参数的选用、水喷雾作用下的烟气蔓延情况、烟气层温度分布、能见度变化以及CO浓度变化等方面的影响进行了研究和模拟,验证了纵向排烟模式下水喷雾系统能够起到良好的控烟和灭火的效果,为今后的公路隧道消防设计提供了参考资料。The water spray system will result in smoke sinking from the fire in tunnel,and pervade the whole space or influence safe evacuation,this article came up with the project that the spraying water-mist system could be used to protect the firing tunnel.Through the research and simulation on the influences of choosing model parameter,smoke spread under the influence of spraying water-mist,temperature distribution of the smoke layer,changes in visibility & concentration of CO,the good effects of the spraying water-mist system on smoke control and fire suppression in vertical smoke exhausting mode had been proved,thus providing references for design in highway tunnel fire control in the future.

关 键 词：隧道 水喷雾 纵向排烟 能见度 临界风速 

分 类 号：U453.8[建筑科学—桥梁与隧道工程]