Three-dimensional stability analysis of slope regions based on strength reduction method

No matter for the natural slope or artificial slope, the slope region treatment or support exists for real. The slope division, thus, is necessary and is of important practical significance as well. In the three-dimensional stability analysis of slope, however, the general method is to integrally analyze the slope and the division influences are not considered. The difference of displacement and safety coefficients obtained under the overall and local stability analysis of the same local region and the criteria adopted to reasonably judge the critical state of regions are all issues to be studied. For these issues, through conducting the study by combining the situation of Halaowo slope, results show that: the division stability analysis may eliminate displacement errors of overall stability analysis and the real stability state will be obtained as well; and in the three-dimensional stability analysis of slope division based on strength reduction method, the relation curve of cut-through rate of plastic zone following reduction coefficients may well solve the determination issue of critical state for all divisions. © 2015 ejge.