Research progress on effective utilization of natural wind in highway tunnels

With the construction of highway tunnels at high altitude, an increasing number of tunnels located in the meteorological separation zone where natural wind is also obvious. Natural wind pressure influences the ventilation system significantly. This paper summarized theoretical derivation, numerical simulation and site measurement of natural wind pressure as well as the research route of effective utilization of natural wind was also determined. Practice proved that the effective utilization of natural wind could create a huge economic interest. For more and more tunnels located in the meteorological separation zone, it is suggested a monographic study of the natural wind pressure should be carried out.