Meshless Analysis Method for the Whole Process of Progressive Failure of Slope

The slope failure is a large deformation problem, the traditional numerical method, and limit equilibrium method is difficult to characterize the whole process of the failure, resulting in the mechanism analysis which is not clear. Therefore, the smoothed particle hydrodynamics (SPH) method is adopted to analyze the slope stability and deformation failure progressive process. Firstly, an improved method for solving the SPH safety factor based on the adaptive discount factor method is proposed, the tolerance value is introduced, the relationship between the displacement increment and the tolerance value of the characteristic point is analyzed, and the real displacement mutation point is determined. Through comparative analysis, the improved method improves the efficiency and accuracy of the safety coefficient calculation of the traditional meshless theory. Secondly, the SPH numerical model of slope is established to analyze the characteristics of slope deformation and failure, which shows that the SPH method can effectively represent the whole process of slope instability and progressive failure and effectively overcome the disadvantage of non-convergence when the traditional numerical method is used to study the deformation and failure of geotechnical materials. The research results can provide a new method and idea for studying the disaster scope of slope failure, stability analysis, and revealing its destabilization mechanism.