隧道排烟口间距对紧急救援站排烟效果的影响规律研究  

Study on the Infl uence of Smoke Exhaust Vent Spacing on Smoke Control Eff ectiveness in Tunnel Emergency Rescue Stations

作　　者：李宁[1] LI Ning(China Railway SIYUAN Survey and Design Group Co.,Ltd.,Wuhan 430063)

机构地区：[1]中铁第四勘察设计院集团有限公司城地院,武汉430063

出　　处：《铁道勘测与设计》2025年第2期84-90,共7页Railway Survey and Design

摘　　要：为研究隧道救援站排烟口间距对隧道紧急救援站排烟效果及逃生环境的影响,本文以某隧道紧急救援站为研究对象,利用FDS模拟软件对排烟口不同设置间距进行数值模拟计算,通过对比分析得出:(1)排烟口间距小于50m时,在火源点周边20m半径区域以外,其余空间的可见度均达到人员安全疏散所需标准;(2)排烟口间距大于50m时,着火点周围20m范围以外,存在部分区域可见度不能满足人员的安全疏散要求。To investigate the impact of smoke exhaust vent spacing in tunnel rescue stations on smoke control effectiveness and evacuation conditions,this study focuses on a tunnel emergency rescue station.Numerical simulations were conducted using the Fire Dynamics Simulator(FDS)software to evaluate different vent spacing configurations.Comparative analysis revealed the following:(1)When the vent spacing is less than 50 m,the visibility in areas beyond a 20-meter radius around the fire source meets the safety evacuation requirements for personnel;(2)When the vent spacing exceeds 50 m,certain regions outside the 20-meter radius around the fire source exhibit insufficient visibility to satisfy safety evacuation criteria.

关 键 词：紧急救援站 救援门 排烟口间距 Pyrosim 

分 类 号：U45[建筑科学—桥梁与隧道工程]