Discrete element method for slope stability analysis

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Discrete element method for slope stability analysis

 

Author: Chan, Po-shing
Title: Discrete element method for slope stability analysis
Degree: M.Sc.
Year: 1999
Subject: Slopes (Soil mechanics)
Soil stabilization
Finite element method
Hong Kong Polytechnic University -- Dissertations
Department: Multi-disciplinary Studies
Dept. of Civil and Structural Engineering
Pages: 71, [182] leaves : ill. ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b1492571
URI: http://theses.lib.polyu.edu.hk/handle/200/2499
Abstract: The Discrete Element Method (DeEM) is an alternative to the conventional limit equilibrium method developed for the analysis of slope stability and is presented in this report. Unlike most other limit equilibrium methods, this method satisfies the overall equilibrium making least assumption. This method can also be used for the formulation of the plastic behavior of soil, analysis of the progressive failure involving local yield and subsequent stress redistribution and the progressive block failure in rock slope. Comparison of the DeEM with other commonly adopted limit equilibrium stability analysis methods has been carried out. Different geological, hydraulically and topographical cases have been studied. The results obtained indicated that under all circumstances, the DeEM analysis gives results similar to the other limit equilibrium method. Due to the development of the theory based on the stiffness of the inter-slices springs and the subsequent movement of the sliding mass, overall stiffness matrix and movement vectors of the sliding mass can be obtained. The method gives a good picture of the movement of the slope during failure, which is not possible in the traditional method. The study carried out concluded that the method has the same capacity as other conventional methods. This method can provide a fast and accurate computation with an assessment of the failure mechanism.

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