隧道口紧急救援站主洞与平导隧道协同送风方案研究  

Coordinated Air Supply Optimization of the Main Hole and the Parallel Adit of the Emergency Rescue Station at the Tunnel Entrance

作　　者：王勇 刘家平[1,2] 杨成 郭辉 姜学鹏[1,2] WANG Yong;LIU Jiaping;YANG Cheng;GUO Hui;JIANG Xuepeng(School of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Fire Safety Technology Institute,Wuhan University of Science and Technology,Wuhan 430081,China;Institute of Architecture and Urban Planning and Design,China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]武汉科技大学消防安全技术研究所,湖北武汉430081 [3]中铁第四勘察设计院集团有限公司建筑与城市规划设计研究院,湖北武汉430063

出　　处：《安全与环境工程》2023年第6期121-129,共9页Safety and Environmental Engineering

基　　金：国家自然科学基金项目(51874213);湖北省重点研发计划项目(2020BCB072)。

摘　　要：以某隧道口紧急救援站为实际工程背景,提出一种适用于隧道口紧急救援站的隧道主洞与平导隧道协同送风方案,利用FDS数值模拟软件对隧道主洞和平导隧道不同协同送风条件下隧道主洞洞口处和平导隧道内横通道各防护门处防烟风速的变化规律进行数值模拟研究,并确定了隧道主洞与平导隧道协同送风的最优防烟通风方案。结果表明:随着距平导隧道洞口的距离由160 m减小至20 m,横通道各防护门处防烟有效风量之和与射流风机送风量的比例由1.85增大至2.21;当平导隧道内射流风机集中送风量大于或等于29.9 m^(3)/s,射流风机距邻近横通道的距离大于或等于140 m时,6处疏散通道防护门处防烟风速均大于2 m/s;确定了射流风机距邻近横通道的距离为140 m、平导隧道内射流风机送风量为29.9 m^(3)/s、隧道主洞送风风速为2 m/s是隧道主洞与平导隧道协同送风的最优防烟通风方案。Based on the actual engineering background of a tunnel emergency rescue station,this paper puts forward a scheme of coordinated air supply between the main tunnel and the parallel adit of tunnel,which is suitable for the emergency rescue station at the tunnel entrance.Through the FDS numerical simulation software,the variation law of smoke-proof air velocity at the entrance of the main tunnel and the protective door of the transverse passage under different coordinated air supply conditions is studied,and the optimal scheme of smoke control and air supply for the main tunnel and the parallel adit of tunnel is determined.The results show that with the distance from the the entrance of the parallel adit of tunnel decreasing from 160 m to 20 m,the ratio of the effective air volume for smoke control and the air supply volume of the jet fan increase from 1.85 to 2.21;when the central air supply capacity of the jet fan is greater than or equal to 29.9 m^(3)/s in the parallel adit of tunnel,and the distance between the fan and the adjacent transverse passage is greater than or equal to 140 m,the smoke-proof air velocity at the protective door of the six evacuation passages is greater than 2 m/s.The distance between the jet fan and the adjacent transverse passage is 140 m,the air supply rate of the jet fan in the parallel adit of tunnel is 29.9 m^(3)/s,and the air supply velocity of the main tunnel is 2 m/s.

关 键 词：隧道口紧急救援站 主洞 平导隧道 射流风机 协同送风 数值模拟 

分 类 号：X932[环境科学与工程—安全科学]