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高等级公路长隧道的通风设计，以往均采用横向或半横向式，成渝高速公路的中梁山隧道与给云山隧道在国内首次采用了竖井分段纵向式通风。本文概述纵向式通风的设计计算方法，并对其中的竖井位置进行了探讨。
In the past, the ventilation design of long tunnels for high-grade highways used horizontal or semi-horizontal type. The Zhongliangshan Tunnel and the Yunshan Tunnel of the Chengdu-Chongqing Expressway were the first ones to adopt vertical shaft ventilation in the country. This paper gives an overview of the design and calculation of vertical ventilation and discusses the location of the shaft.