ABSTRACT
The main objective of this article is to investigate the stability of high rock slopes in a mining project in Peru. The analysis was performed by finite elements, considering bi and three-dimensional models, involving six different types of rock. Three-dimensional geometric effects in pseudo-static safety factors were also investigated, since the mine is situated in a region of high seismic activity, as well as the influence of the distance of the waste material from the edge of the excavation. The effects of waste dump on safety factor values were quite low, but the shape of the potential failure surface varied according to the distance from the excavation. It was also observed that the pseudo-static safety factors in 3D analyses are dependent on the orientation considered for the horizontal pseudo-static forces.
