隧道在选线过程中应尽量远离滑坡体，但有时候由于各种原因而难以避免。同时考虑安全性和经济性是滑坡体处洞口施工的困难问题之一。以云岭隧道进口处大型滑坡体为背景，在不对滑坡体进行全面加固的前提下，采取经济适当的辅助措施，科学合理地组织施工，安全顺利地进行了滑坡体处的隧道进洞施工，取得了良好的经济效益和工程效果。

 Landslide bodies should be avoided when selectingthe tunnel route. However, due to some special reasons, sometimes the landslide bodies can not be avoided. It is of great difficulty to achieve high safety and high economic efficiency at the same time in the construction of the portal section located in landslide body. Landslide body is encountered at the entrance portal of Yunling tunnel.Some auxiliaryand cost effective measures, instead of complete consolidation measures, are taken for the landslide body. Furthermore, the construction process is organized reasonably, by which the tunnel has passed the landslide body safely and successfully and satisfactory economical and engineering results have been achieved.