A New Analytical Method for Analysis of Rock Slopes Against Block-Flexure Toppling Failure

Block-flexure toppling failure is a common failure of layered rock masses in rock slopes. In the failure, rock blocks fail due to bending stresses and overturning. In this paper, initially, a brief review of toppling failure in rock slopes is summarized. Then, a theoretical model is suggested for rock slopes with potential of block-flexure toppling failure, and consequently a new analytical approach is presented for analysis of the failure. Next, a computer code is developed for assessment of rock slopes against block-flexure toppling failure on the basis of presented method in the paper. Finally, two case studies are analyzed by the new suggested approach and the theoretical and real results are compared.