摘要
2005年11月对北京地铁1号和2号线某典型单层岛式车站通风排烟系统的风速以及站台区域的速度场进行现场实测调查。根据实测结果并结合数值模拟的方法,对车站内的气流流动现状进行分析与评估。并在此基础上,进一步分析车站发生火灾时,不同通风排烟模式下烟气的速度场、温度场和浓度场的分布规律,提出车站火灾发生时的最佳通风排烟模式,以期为现行的地铁通风排烟系统运行方式以及将来的地铁通风排烟系统设计提供参考。
The flow rate of the extraction system and velocity field on the platform of a typical monolayer island station of Line 1 and Line 2 of the Beijing Metro were measured in December 2005. Based on the measured values, numerical analysis was made to evaluate the current flow states in the station. Moreover, the smoke velocity, temperature and concentration distribution in case of station fire under different extraction modes were analyzed, then the optimal smoke extraction mode was proposed. Reference was offered for the running modes of the existing subway extraction system and the design of the future subway extraction system.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2009年第2期137-142,共6页
Journal of the China Railway Society
基金
北京市科技计划项目(D0604004040211)
关键词
地铁车站
火灾
通风排烟模式
现场实测
数值分析
subway station
fire
extraction mode
site measurement
numerical analysis
