Scale experiment on ventilation in urban bifurcate tunnels

 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.