低等级公路双向行车超特长隧道火灾通风方案探讨  

Discussion of Ventilation in Case of Fire in an Extra-Long Two-Way Traffic Tunnel on a Low-Grade Highway

作　　者：张祉道[1] 袁松[1] 张廷彪 

机构地区：[1]四川省交通运输厅交通勘察设计研究院,成都610017

出　　处：《现代隧道技术》2012年第3期32-40,48,共10页Modern Tunnelling Technology

摘　　要：文章从双向行车隧道火灾通风的特点入手,着重分析了火灾时隧道内温度和烟气分布对洞内人员和车辆的不利影响,并对目前国内应用最多的平导外风道通风方式进行了深入研究,得出了该通风方式在火灾时不能保证人员和车辆安全的结论;同时提出了三种可行的通风方案,并通过分析对比,最后择优推荐了较适合我国国情的、采用两个单车道隧洞单向行车的全纵向通风方案。This paper analyzes the adverse effects on people and vehicles located in a tunnel in the case of a fire with respect to temperature and smoke distribution, starting with the features of ventilation in a two-way traffic tunnel. Furthermore, a study was carried out regarding the widely used external air passage ventilation method of a horizontal adit, with the conclusion that this air passage cannot guarantee the safety of tunnel users and vehicles in case of a tunnel fire. Three feasible ventilation schemes are presented, and full longitudinal ventilation in two one-lane one-way traffic tunnels is recommended based on analysis and comparison.

关 键 词：低等级公路 超特长隧道 火灾特点 通风方案 

分 类 号：U452.28[建筑科学—桥梁与隧道工程]