Abstract
As an important facility for mine exploitation, the safety of tailings dam is very important in high seismic intensity area. In this paper, the seismic stability analysis of tailings dam located in high intensity area was carried out by taking the example of one tailings dam. Three-dimensional finite element model was established, and the calculation results were analyzed and compared under fixed boundary condition and viscous spring boundary condition. The results showed that, (1) Under the static condition, the deformation value is distributed in layers from top to bottom. (2) Under the seismic condition, it can be seen that the Z direction deformation is the largest, followed by the X direction, and the Y direction deformation is the smallest. (3) It is too conservative to evaluate the seismic stability of dam slope with the minimum safety coefficient, while it is more practical to use the minimum average safety factor as the evaluation index.
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