Analysis on seismic dynamic response of tailings dam

Taking a tailings dam in Hebei as the research object, the dynamic response of the dam under action of flood and earthquake is simulated by using a finite element software, and the seismic dynamic response of the dam with respect to acceleration, stress, displacement, liquefaction area and stability are analysed. The results show that, the vertical acceleration increases with the height of the dam, the horizontal acceleration is gradually increasing from outside to inside. A larger horizontal and vertical displacement occurs at the 3/4 height of tailings dam. Earthquake causes a small range of liquefaction area. The stability of the tailings dam is calculated with Sweden Arc Method, showing dynamic stability safety factor is 1.257 when considering drainage, which is greater than the standard value, indicating the tailings dam is stable in the case of earthquake.