基于场网模型的一端开敞地铁区间隧道火灾烟气控制分析

In this paper, the smoke control modes in a metro tunnel with one opening portal was studied by combining the network model (SES) with the field model (FDS). Firstly, putting forward the combination of the field model and the network model to discuss smoke control effect of shaft ventilation in the tunnel by using the results of the network simulation as a boundary condition of the field simulation. In addition, the influence of the non-uniformity of air velocity on the tunnel cross section formed by shaft ventilation on the smoke control effect was analyzed. The result shows that the combining the field model with the network model can solve the problem of smoke control in the tunnel effectively, and because of the non-uniformity, the smoke control effect formed by shaft supply or shaft extraction is different from that formed by uniform supply or extraction.