Abstract:

 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.

Key words: landslide tunnel expressway  , reinforcement measure