The magnify coefficient of earthquake acceleration peak value is obtainable, using numeric calculate method to analyze the earthquake response and compare inner points and ground reference ones in earthquake to a certain slope model. The most dangerous stress state of the slope is abtained, using numeric calculate to multiply the acceleration magnify coefficient by ground designed acceleration as the level acceleration of a point. In order to estimate the earthquake dynamic stability of a slope, the potential sliding faces were enacted and their safety factors were analyzed.
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