Taking a lead-zinc mine tailing dam in Hunan Province as the research object,the tailings were recovered and then subjected to 6 cycles of wet-dry cycling.The tailings after the wet-dry cycle were subjected to shear experiments to investigate the effect of repeated wetting and drying cycles effect on tailings mechanical properties.The results show that the stress-strain curve of the tailings undergoes irreversible changes after the wet-dry cycle.Through the analysis of the stress-strain curve,the peak value of the deviatoric stress of the tailings increases with the number of wet-dry cycles,bu...