NUMERICAL ANALYSIS OF LANDSLIDE-DEBRIS FLOW CAUSED BY EARTHQUAKE BASED ON PARTICLE FLOW METHOD

摘要

Numerical simulation of the whole processing of landslide-debris flow caused by earthquake is conducted using PFC. The seismic wave of Wenchuan earthquake is applied to the present landslide-debris flow model. Four stages consisting of pregnant stage, trigger stage, high speed movement stage and deposit stage are reported and analyzed. Particular features of movement of the landslide-debris flow model such as tension crack, blank zone and adverse grade creep are also illustrated.