THE INFLUENCE OF THE TYPE OF CYCLIC SHEARING ON THE BEHAVIOUR

Mining generates large volumes of waste, often stored in tailings dams, which pose risks under seismic loading. The undrained cyclic behaviour of these materials remains poorly understood, as triaxial tests fail to replicate real seismic conditions. This study compares the cyclic response of ore tailings using triaxial tests and the Hollow Cylinder Apparatus (HCA), which enables independent stress control and realistic loading paths. Reconstituted samples were used to ensure consistent initial conditions. Results highlight the influence of loading conditions on undrained behaviour, emphasising the importance of realistic testing for tailings dam stability in seismic regions.