对隧道揭示岩溶、岩溶特征及处理措施进行了详细介绍，并对不同岩溶类型提出针对性的治理对策。同时强调在遭遇大规模高压富水充填溶腔时，对宏观地质背景的分析和认识在决定治理方案时的重要作用。提出长大岩溶隧道施工时遇到大规模岩溶时有针对性的采用绕避方案，及时调整施工组织，确保工期目标的实现。

The revealed karst, karst features and treatment measures are described in detail, and different types of karst-specific countermeasures are put up. At the same time, it is stressed that in the encounter of large-scale high-pressure water-rich cavity filling, macro-scopical analysis and understanding of the geological background governs in determining the treatment schedule. The by-pass schedule pertaining to large-scale karst cavities during construction is put up, and relatively construction organization is modified to ensure the project term target. All these can provide reference for the construction of the long karst tunnels.