Evaluating Kinematic Controls on Planar Translational Slope Failure Mechanisms Using Three-Dimensional Distinct Element Modelling

被引：34

作者：

Brideau, Marc-André ^{[1
]}

Stead, Doug ^{[2
]}

机构：

[1] University of Auckland, Auckland 1142, 23 Symonds Street

[2] Simon Fraser University, Burnaby, BC V5A 1S6

来源：

Geotechnical and Geological Engineering | 2012年 / 30卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Distinct element modelling; Kinematics; Rock mechanics; Slope stability;

D O I：

10.1007/s10706-012-9522-5

中图分类号：

学科分类号：

摘要：

This paper investigates the importance of kinematic release mechanisms on planar translational slope failure using three-dimensional distinct element codes. The importance of the dip and dip direction of the rear, basal and lateral release surfaces and their influence on failure mechanism, dilation, and the development of step-path failures is illustrated. The three-dimensional block shape and volume of the unstable rock masses simulated with the different discontinuity set geometries are characterized. Two assumed three-dimensional slope models are investigated in order to assess the importance of varying kinematic confinement/release mechanisms. These two assumed boundary conditions are shown to be critical in the development of asymmetrical rock mass deformation patterns. Scale effects due to the block size and discontinuity persistence are shown to control the calculated displacement and failure mechanisms. The numerical modelling results are also demonstrated to be sensitive to the assumed normal and shear stiffness of the discontinuities. The influence of the factors investigated on the failure of a single rock block versus a rock mass are compared and discussed. © 2012 Springer Science+Business Media B.V.

引用

页码：991 / 1011

页数：20

共 48 条

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