挡烟垂壁对送排式通风隧道火灾的控制效果研究  

A Study on the Control Effect of Smoke Barriers on Fire in Blow and Exhaust Ventilation Tunnels

作　　者：张鹏[1,2] 曾艳华[1,2] 敬云龙 ZHANG Peng;ZENG Yanhua;JING Yunlong(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031;State Key Laboratory of Intelligent Geotechnics and Tunnelling,Southwest Jiaotong University,Chengdu 610031;Sichuan Yanjiang Yijin Expressway Co.,Ltd.,Chengdu 610041)

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]西南交通大学极端环境岩土和隧道工程智能建养全国重点实验室,成都610031 [3]四川沿江宜金高速公路有限公司,成都610041

出　　处：《公路交通技术》2025年第2期136-144,共9页Technology of Highway and Transport

基　　金：国家自然科学基金项目(52178394);四川省交通运输科技项目(2018-ZL-02)。

摘　　要：为研究挡烟垂壁用于送排式通风隧道时对其火灾控制的有效性,采用FDS软件模拟分析了挡烟垂壁高度、数量、间距和位置对隧道内烟气分布、温度分布和流场的影响。结果表明:1)安装挡烟垂壁能有效提高送排式通风隧道控温控烟效果;2)随着挡烟垂壁高度和数量的增加,控温控烟效果显著增加,随着挡烟垂壁间距、挡烟垂壁与排烟口距离增加,控温控烟效果有所减弱;3)针对所研究的隧道,采用高度为0.5倍隧道总高、间距为5 m、数量为5个且安装在斜井下游20 m处的挡烟垂壁为较优方案;4)安装挡烟垂壁对隧道整体通风条件无不良影响,通过合理制定救援预案,对车辆和人员的疏散也无不良影响。In order to investigate the effectiveness of smoke barriers in controlling fire in blow and exhaust ventilation tunnels,numerical simulations were conducted using FDS software.The influence of the height,number,spacing,and location of smoke barriers on smoke distribution,temperature distribution,and flow field in the tunnel was analyzed.The results indicate:1)The installation of smoke barriers can effectively improve the temperature and smoke control in blow and exhaust ventilation tunnels;2)As the height and number of barriers increase,the temperature and smoke control effects significantly improve.However,as the spacing between barriers and the distance between barriers and smoke outlets increase,the control effects weaken;3)For the tunnel studied,the optimal arrangement is found to be smoke barriers with a height of 0.5 times the total height of the tunnel,a spacing of 5 meters,a quantity of 5,and installed 20 meters downstream of the inclined shaft;4)The installation of barriers does not adversely affect the overall ventilation of the tunnel,and with proper emergency rescue plans,it also does not hinder the evacuation of vehicles and personnel.

关 键 词：送排式通风 隧道火灾 挡烟垂壁 数值模拟 烟气控制 

分 类 号：U458.1[建筑科学—桥梁与隧道工程]