首先自然风风墙式压差进行理论分析,然后再对六盘山隧道一年的气象监测数据进行分析,得到六盘山隧道各洞口附近的自然风大小及频率分区,在此基础上,根据相似理论建立了六盘山隧道的六盘山隧道自然风风压系数试验模型。通过模型试验,得到六盘山隧道自然风风压系数取值在0.6~0.8之间,为隧道内自然风的计算提供了基本依据。 First of all, the theoretical analysis of the natural wind pressure wall pressure wall, and then the Liupanshan tunnel year meteorological monitoring data analysis, the natural wind tunnel near the hole size and frequency of natural wind on this basis, according to the similarity theory The Liupanshan tunnel natural wind pressure coefficient test model was established. Through the model test, the natural wind pressure coefficient of Liupanshan tunnel is between 0.6 and 0.8, which provides a basic basis for the calculation of natural wind in the tunnel.