Slope disasters across the world, in recent years, cause serious impact on people's lives, production and daily life. The stability of the slope plays an important role on the whole project feasibility, safety and economic constraints, and to a large extent influence the investment and efficiency of the construction. Therefore, the slope stability problem has become more prominent and is of great practical significance.
With the increasing development of computer technology, the finite element method, the boundary element method, discrete element method, finite difference method and mixing in numerical methods have been fully developed in slope stability analysis. From greatly considering the complexity of the slope medium and comprehensively analyzing the stress and strain status of the slope, numerical analysis method is verified useful not only in solving engineering problems but also in deepening the recognition of the deformation and failure mechanisms of slope. At present, slope stability analysis methods were fully studied and developed and new theories and methods were continuously introduced.
However, because of the limitations of the theory and practice, there are various own shortcomings of each method. Although the reliability analysis method based on probability theory and theory of nonlinear represents the developing direction of the slope stability analysis, the limit equilibrium method as the representative of deterministic method is still the most frequently used and most mature method.
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