ABSTRACT
This paper presents laboratory testing on mine waste rock collected from the Ok Tedi open pit mine in Papua New Guinea to determine the shear strength and modulus – two key parameters for slope stability design. Due to the large size of mine waste particles, conventional geotechnical apparatus are typically not suitable as significant boundary effects are expected. This study has adopted a large-scale square shear box and a large-scale circular consolidation apparatus for strength and modulus testing. The results provide valuable data for static and dynamic stability assessment of similar waste dumps.
