西秦岭隧道互补式通风数值仿真分析  

Numerical Simulation Analysis of Complementary Ventilation in West Qinling Mountains Tunnel

作　　者：周家才 熊雅[2] 王建宇[2] 王亚琼[2] 

机构地区：[1]中交第二勘察设计研究院有限公司,湖北武汉430052 [2]长安大学陕西省公路桥梁与隧道重点实验室,陕西西安710064

出　　处：《筑路机械与施工机械化》2017年第7期59-63,69,共6页Road Machinery & Construction Mechanization

基　　金：国家自然科学基金项目(51408554);中央高校基本科研业务费专项资金项目(2013G1502027;2013G3214011)

摘　　要：为研究换气风量与换气通道位置对互补式通风隧道内污染物浓度的影响规律,建立隧道通风三维数值仿真计算模型,分析4种不同组合工况下换气风量和换气通道位置对污染物浓度的变化影响。结果表明:随着换气风量的增加,上坡隧道排风段污染物浓度减小,下坡隧道全段污染物浓度减小;随着换气通道与上坡隧道入口距离的增加,上坡隧道排风段污染物浓度增加,下坡隧道排风段污染物浓度减小。In order to study the influence of the ventilation volume and the ventilation channel position on the concentration of pollutants in the complementary ventilation tunnel, a three- dimensional numerical simulation model of the tunnel ventilation was established. The effects of ventilation volume and ventilation channel position on the concentration of pollutants in four different combinations were analyzed. The results show that with the increase of ventilation volume, the concentration of pollutants in the exhaust section of the uphill tunnel and the whole downhill tunnel decreases; with the increase of the distance between the ventilation channel and the entrance to the uphill tunnel, the pollutant concentration in the exhaust section of the uphill tunnel increases, while that of the downhill tunnel decreases.

关 键 词：隧道工程 互补式通风 污染物浓度 三维数值仿真 

分 类 号：U453.5[建筑科学—桥梁与隧道工程]