Mine layout, geological features and seismic hazard.

Abstract

In the present study, a method is proposed method to estimate strong ground motion from possible large events. The method was demonstrated in two ways. Firstly, the magnitude of ground motion was estimated at distances away from a vertical source. If a worst case event is assumed, the simulation can be used to calculate the resulting ground velocity as a function of the distance from the source, and the model can thus be used to assist in stope support design. In the second case, an event was simulated on a hazardous fault. The ground velocity was visualized in 3D, and this provided useful information regarding possible damage throughout the volume modelled. The above was supplemented with 3D contours of sigma 1 stress (from an elastic MAP3D model), which pointed out highly stressed areas.