Abstract
This paper describes the results of slope stability analysis carried out for a lead–zinc open pit mine. Geotechnical mapping was carried out to identify the critical orientation of structural discontinuities. The intact rock properties of different rock samples were determined in the laboratory and subsequently rock mass properties were estimated. Shear strength properties of discontinuities were determined by back analyzing the actual failed benches. The stability of the slopes was analyzed in two dimensions using limit equilibrium and numerical methods. The safe slope geometry obtained from limit equilibrium method was reexamined by distinct element method. Based on the analysis of results safe slope parameters were suggested.
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