Experimental Study On Slope Destruction Under Dynamic Load

In order to research the rules of slope slide destruction and its displacement change and strain change that caused by earthquake, with the white light digital speckle related methods (DSCM), we did the experiments simulation of the slope that under the effects of earthquake that mainly by the horizontal direction. According to the different size of weak surface quantity and depths, we did two large groups, six experiments for the slope model of the size:1000mm×1000mm×200mm, did the high-speed record consecutive testing for the white-light speckle information of the slope model during the experiments, obtain the displacement, strain field of the measured surface, get the white light digital speckle image information that from initial to terminate slope state process. Results showed that with a single weak surface slope, the first destruction began at the bottom weak surface of the model, and it expanded along the weak surface, completely collapsed finally; Weak surface quantity and depths have important influence on the destruction of slopes. It has an certain help for the deformation, slump, consolidation, forecasting and evaluations of the slopes under the effects of the earthquake to research some controlling factors for the destruction of slopes by earthquake dynamic action.