摘要
介绍地铁站防排烟设计方式及联动逻辑。利用FDS建立某地铁站数学模型,设计火源功率为10.0、2.5 MW,分5、10m/s的射流速度研究在火灾情况下防烟空气幕对烟流的影响。与现行规范要求的1.5 m/s向下风速进行比较分析,研究不同时刻的烟气速度矢量图、烟气温度图以及烟气蔓延图,以得出不同形式的控烟效果,评价空气幕的设置对人员安全疏散和灭火救援的影响。
The smoke control design of subway station and its link- age logic were introduce. A model of subway station was estab- lished by FDS to simulate the effect of air curtain on smoke move merit during fire. The fire power were 10.0 and 2.5 MW and the jet velocity were 5 and 10 m/s. Comparative analysis with smoke con-trol under 1.5 m/s downward flow required by the code was carried out, and the smoke movement velocity, smoke temperature and smoke spread were researched to obtain the smoke control effect of different smoke control measures. The influence of air curtain on personnel evacuation and fire fighting and rescue was evaluated.
出处
《消防科学与技术》
CAS
北大核心
2017年第11期1530-1534,共5页
Fire Science and Technology
关键词
地铁站
火灾烟气
防烟空气幕
数值模拟
人员疏散
subway station
fire smoke
smoke prevention air cur-tain
numerical simulation
personnel evacuation
