摘要
从烟气流动控制微分方程出发,利用量纲分析导出建立地铁实验系统的相似准则数,给出建立模型实验的相似律,据此建立几何比例为1∶8的地铁区间与车站多功能模型实验平台。该平台分为地铁区间和地铁车站两个部分,具备全面研究地铁火灾科学问题和火灾工程问题的功能:定量火灾场景,火灾实时监测与预警,烟气流动规律,温度分布特性,通风排烟模式。在该实验台上进行一系列实验,结果表明:缩尺模型实验所获得的数据真实可信,能较好地反映火灾烟气运动规律。本实验台的建立对于地下空间火灾科学理论研究及火灾工程应用研究具有重要意义。
The similar criteria number for establishment of the metro experiment system was conducted by non-dimensional analysis from the governing differential equation for smoke flow.The similar law for establishment of the scale model was presented.The 1/8 multifunctional experiment platform of the subway section and station was established,which consisted of the parts of subway tunnels and stations and was used to do comprehensive study on fire sciences and engineering issues,such as the quantitative fire scenes,real-time monitoring and early warning of fire,flow of smoke,distribution characteristics of temperatures and smoke exhaust ventilation pattern.A series of experiments were done on the experiment platform.The results show the data of the reduced-scale model is authentic and the movement law of smoke is reflected well.In conclusion,the experiment platform is of great significance to theoretical and application research on fires in the underground spaces.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
2010年第5期88-92,共5页
Journal of the China Railway Society
基金
国家科技支撑计划项目(2006BAJ27B04)
作者简介
樊洪明（1964-），男，哈尔滨人，副教授，博士。E-mail：fanhm@bjut．edu．cn
