KINETICS CHARATERISTICS OF LARGE LANDLIDES TRIGGERED BY MAY 12TH WENCHUAN EARTHQUAKE

Wenchuan Earthquake occurred in the Longmen Mountain region, which geologic environment is very weak, and the earthquake with high magnitude, large energy, long duration and other characteristics. Wenchuan Earthquake directly induced thousands of rock fall and collapses. Some unique kinetics characteristics of these collapses have been found during the earthquake. Based on lots of collapse site investigations around Wenchuan area and combined with the characteristics of construction and slope broken patterns, the paper represents the kinetic characteristics of cracking, horizontal throwing and debris flows triggered by earthquake. It may provide some new clues to attribute the research on the causes of strong earthquake.