摘要
为探究地铁无轨顶排烟车站隧道火灾情况下站台公共区通风排烟系统的动作模式,采用CFD数值模拟,研究区间隧道通风排烟系统不同排烟量时站台公共区通风排烟系统排烟、停止和送风3种动作模式下的烟气控制情况。结果表明:无轨顶排烟车站隧道火灾情况下,区间隧道风机起到主要的排烟作用;开启站台公共区排烟时,烟气虽被抽吸到站台,但站台烟气聚集量不高于站台公共区送风模式;当区间隧道排烟量较小时,站台公共区送风或者停止运行可能导致楼扶梯口流速过低,造成烟气从站台蔓延至站厅。
In order to explore the action mode of the ventilation and smoke extraction system in the platform public area under the tunnel fire at a station tunnel without roof smoke extraction,this paper uses CFD numerical simulation to study the smoke control of the ventilation and smoke exhaust system in the platform public area under three action modes:smoke exhaust,stop and air supply,under different tunnel fan volume.The results show that:in case of tunnel fire in a tunnel without roof smoke extraction,the tunnel fans play a major role in smoke extraction.When smoke is extracted from the platform public area,the smoke accumulation of the platform is not higher than that of the platform public area air supply mode.When the smoke exhaust volume of the tunnel fan is small,the air supply in the platform public area or the stop of operation may lead to a low flow rate at the escalator exit,resulting in the smoke spreads from the platform to the station hall.
作者
李建
史聪灵
任飞
钱小东
LI Jian;SHI Congling;REN Fei;QIAN Xiaodong(China Academy of Safety Science and Technology,Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety,Beijing 100012,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2020年第S01期5-9,共5页
Journal of Safety Science and Technology
基金
中国安全生产科学研究院“万人计划”入选人才特殊支持经费项目(WRJH201801)
中国安全生产科学研究院基本科研业务费专项项目(2020JBKY02)
关键词
无轨顶排烟
火灾
站台公共区
排烟模式
station tunnel without roof ventilation
fire
platform public area
smoke extraction mode
作者简介
李建,博士,高级工程师,主要研究方向为轨道交通安全;通信作者:史聪灵,博士,教授级高级工程师,主要研究方向为轨道交通安全。
