Abstract
This paper describes the mechanism of slope displacement using the results of long-term monitoring of a large excavated rock slope. The study also evaluates the influence of joint sets on slope behavior by numerical analysis. The stability of a large excavated rock slope is greatly influenced by the joints and weak layers in the rock, and the geometrical relationship between their positions and the excavated surface. It is important not to fail to notice signs of instability at early stage of excavation with results of long-term monitoring. Based on the deformation behavior observed by monitoring. the need of actions should be determined such as additional geotechnical investigations, stability analysis, and design modifications and revisions.
