摘要
针对某一典型两线换乘地铁站,深入研究站厅层、站台层不同排烟模式的烟气流动和气流组织形式,并探讨不同位置发生火灾时的补风方式。研究表明:当公共站厅层发生火灾时,站厅层根据火灾探测开启机械排烟,并建议开启下部站台层的机械补风系统;当站台层发生火灾时,着火层站台开启机械排烟系统,且上部站厅层须联动开启机械补风系统,保证站台层楼梯口处的补风速率不小于1.5m/s,以提高站台层的排烟效率。
Taking a metro transfer station with 2 lines as an ex- ample, the smoke and air flow under different smoke exhaustmodes at concourse and platform level were studied in details, and the make up air modes for different fire location were dis- cussed too. It is concluded that smoke extraction system for concourse shall he activated linked by fire detection system, and mechanical make up air in the platform levels as well when a fire breaks out in the station concourse. In case of a fire breaking out in platform level, its smoke exhaust system shall be in oper- ation, and the mechanical make up air in the concourse level as well to improve the efficiency of smoke control system via form- ing a downward make up air flow with velocity more than 1.5 m/s in the stair connecting platform and concourse.
出处
《消防科学与技术》
CAS
北大核心
2013年第4期370-373,共4页
Fire Science and Technology
关键词
地铁换乘站
排烟模式
气流组织
补风速率
transfer metro stations smoke extraction mode
airflow organize
make up air velocity
