An extension of 2D Janbus generalized procedure of slices for 3D slope stability analysis Ⅱ-Numerical method and applica

This paper provides a numerical approach on achieving the limit equilibrium method for 3D slope stability analysis proposed in the theoretical part of the previous paper. Some programming techniques are presented to ensure the maneuverability of the method. Three examples are introduced to illustrate the use of this method. The results are given in detail such as the local factor of safety and local potential sliding direction for a slope. As the method is an extension of 2D Janbu's generalized procedure of slices (GPS), the results obtained by GPS for the longitudinal sections of a slope are also given for comparison with the 3D results. A practical landslide in Yunyang, the Three Gorges, of China, is also analyzed by the present method. Moreover, the proposed method has the advantages and disadvantages of GPS. The problem frequently encountered in calculation process is still about the convergency, especially in analyzing the stability of a cutting corner. Some advice on discretization is given to ensure convergence when the present method is used. However, the problem about convergency still needs to be further explored based on the rigorous theoretical background.

作 者： ZHANG Junfeng LI Zhengguo QI Tao   作者單位： Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China  刊 名： 中國(guó)科學(xué)E輯（英文版）  SCI 英文刊名： SCIENCE IN CHINA SERIES E(TECHNOLOGICAL SCIENCES)  年，卷(期)： 2005 48(z1)  分類(lèi)號(hào)： P5  關(guān)鍵詞： slope stability analysis   three-dimensional analysis   limit equilibrium  

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