多点进出城市地下道路通风模型实验研究*
Scale experiment on ventilation in urban bifurcate tunnels
摘要：
为了研究分岔隧道结构对污染物扩散的影响，基于研究团队关于长沙营盘路隧道的大量现场实测数据及相关理论模型研究成果，采用相似分析法进行了1∶8缩尺模型实验，重点分析了交通风量、合流匝道及分流匝道结构对主隧道污染物浓度分布的影响规律。
关键词：多点进出城市地下道路,通风,污染物浓度,合流匝道,分流匝道,模型实验,相似理论,交通风量
Abstract：
In order to study the influence of bifurcation tunnel structure on pollutant diffusion, based on a large number of field measured data from Changsha Yingpan Road tunnel and the related theoretical model research results, carries out a 1∶8 scale model experiment by similarity analysis method. Analyses the effects of traffic air flow, confluence ramp and shunt ramp structure on the concentration distribution of pollutants in the main tunnel.
Keywords:urban bifurcate tunnel, ventilation, pollutant concentration, confluence ramp, shunt ramp, scale experiment, similarity theory, traffic air flow