Through the dynamic triaxial tests of the tailings material taken from a copper mine, dynamic strength
and residual deformation are studied. It is indicated that: the dynamic strength will increase with
confining pressure and consolidation stress ratio. The related curves of dynamic shear stress ratio and
vibration times have good normalization under different confining pressure. Whether isotropic or
anisotropic consolidation, residual axial strain increase with confinng pressure, and the increasing
trend are particularly obvious under anisotropic consolidation. The curve of residual axial strain and dynamic shear stress ratio is linear in the log-log coordinate, and the relation can be expressed by a
power function.