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Convex and Concave Slope Stability Analyses with Numerical Methods |
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Convex and Concave Slope Stability Analyses with Numerical Methods Author: M. Cała
This paper deals with the stability of convex and concave slopes. These types of slopes can be often found in the open pit mines. Two dimensional limit equilibrium methods are usually applied for slopestability analysis. Limit equilibrium methods extended to three dimensions are used occasionally. Thestability of spatial columns (instead of slices) is analysed in these cases. This paper shows the possibility
of application of three and two-dimensional numerical calculations for stability analysis of concave and convex slopes. The shear strength reduction method was used to calculate the value of safety factor. Theresults of calculations with shear strength reduction method were compared with ones obtained fromlimit equilibrium methods. The considerations presented below allow formulating the conclusion, that
proper two dimensional slope stability analyses are impossible for many cases. It’s necessary to perform a three dimensional numerical calculations, which allow to model spatial geometry and complex geologyof any slope. |
2011