No.1 landslide on the eastern approach road to ErLang Mountain tunnel:Inference factors and controlling measures

摘要

The factors resulting in No.1 landslide can be summarized as follows: the downcutting ofLongDan rivulet leading to the slump of mountain body,the existence of old landslides,and the revivifyingof old landslides under the influence of rainstorm and mud-rock flow. Slump resulting in the disintegrationof rock mass was earlier than slide and then was replaced by slide. In the landslide such a process can beidentified: creeping deformation→accelerating sliding→intermittence motion→compaction consolidation,etc.several developmental course. Several controlling measures for the landslide were put forward to prevent itsdevelopment.