Numerical analysis on landslide mechanism of a talc sheet rock slope at Liangjiaren hydropower station
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Abstract:
Landslide disaster is one of the most frequently happening geological disasters, the process of which is governed by terrain geometry, characteristic of landslide rock mass, characteristic of slip surface and external environment loads such as earthquake, rainstorm and human activity. Based on the fact of landslide disaster at bedding rock slope of left bank of Tiger-leap-Gorger at Liangjiaren hydropower station, on October 28,1996, a landslide model was built up to fit the slide rock mass, slip face, as well as the effect of earthquake and rainstorm according to a large number of geological surveys. Then a series of numerical simulation of landslide was proposed to study the influencing rules of slip friction coefficient and strength of slide rock mass on the landslide geometry, debris size and velocity of landslide, so the process of landslide of bedding rock slope was feedback analyzed and the slope stability was discussed. This method could be used in following stability research of similar slopes and corresponding assessment of geological hazards.
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