Abstract
Concerning the application requirements of slope stability analysis in large areas and the defects of current calculation method,a three-dimensional analysis method based on Digital Elevation Model(DEM) data was proposed.In this method,a sphere was used,instead of ellipsoid,to search slippery surface,and the slope safety factor under the three-dimensional conditions was calculated through integral operator with the results of two-dimensional analysis.Finally,the position and shape of possible landslide were determined according to the safety factor.The practical application results confirm that this method simplifies the search algorithm,ensures the accuracy of slope stability analysis,and improves the efficiency of analysis and calculation.
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