Study on the Dynamic Response of Landslide Subjected to Earthquake by the Improved DDA Method

Majiagou landslide, a major ancient landslide in Three Gorges Reservoir region, is located the high earthquake area of southwest China. The 2013 Badong caused an obvious deformation monitored by sliding inclinometer. A strong may induce reactivation landslide. So, it necessary to research seismic dynamic response For this purpose, discontinuous analysis (DDA), improved introducing artificial joint and viscous boundary, applied study. displacements at monitoring points are calculated compared with field data, verifying numerical method model. Further, peak acceleration 1 g assumed act on landside, initiation evolution process simulated, movement features discussed. failure local amplification wave can be embodied, indicating that DDA provides alternative approach for analyzing jointed rock.