Abstract: Taking the dam body of a tailings pond in Oinghai as the research object, the calculationmethod of the limit equilibrium theory in the software Slide is used to deeply analyze the stability changeof the dump under the action of various influencing factors. The main influencing factors such as thethickness of the surface soil layer of the tailings dam body, the height and angle of the dumping materiaand the groundwater are systematically analyzed, and the safety factors under different working conditionsof the final stacking height of the tailings pond dam body are obtained. At the same time , under the influ-ence of the water level, the possible dangerous areas of the tailings pond dam body are calculated, andpreventive measures are put forward to ensure the safe and reliable operation of the tailings pond.

Key words: tailings dam, stability, safety factors, simulation and analysis