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Earthquakes in recent years shows that global seismic activity is more active earthquake slope stability is directly related to the safety of the slope itself and highways, railways and hydroelectric power plants running . These slope instability and failure may trigger the catastrophic secondary disasters , causing casualties and property losses . Therefore, the study slope seismic dynamic response and failure mechanism is of great practical significance . Home and abroad slope dynamic Research Summary of the outstanding problems in the Research . First, the numerical simulation software using FLAC slope dynamic principles, methods and steps , and then studied using FLAC slope in different parts of the horizontal and vertical acceleration response , and do the Fourier spectrum analysis . Second , drawing on rock dynamics longitudinal and transverse waves propagation in the medium caused by the expression of the dynamic stress , geotechnical unit suffered horizontal seismic force and vertical seismic force is quantified in the form of stress , and introduced to the geotechnical power failure mechanism of the unit calculation , the horizontal seismic forces , vertical seismic force both coupling geotechnical unit failure mechanism are discussed . Finally, a soil and rock homogeneous generalization slope dynamic failure mechanism analysis model , the slope by the earthquake force is quantified in the form of stress , the slope rock mass stress in the ground motion and weight under stress , the stress state , and the failure mechanism of rock and soil in different parts of slope failure criterion based on tensile and shear theoretical calculations , theoretical analysis and numerical simulation method .
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