Abstract
In the analysis of slope stability in discontinuous rock, it is very important to simplify the way needed for finding out a dangerous block in three-dimensional analysis. There exists a stability evaluation method by which the blocks which needed to be evaluated are picked up among numerous blocks. In this paper, a simple stability evaluation method is proposed by formulating a failure condition of the rock, taking into consideration the wedge effect and the location of the discontinuous plane. By comparing the results obtained from the proposed method with those from stereographic analysis, it is shown that the proposed method is effective in identifying the dangerous block.
