旬阳董儿沟尾矿坝动静力稳定性对比分析研究

以旬阳董儿沟尾矿坝为研究对象，根据经验确定了初坝参数，试验测定了需对材料的动力静力参数，静力计算采用E-B模型，动力计算采用等效粘弹性本构，稳定性计算采用瑞典条分法。静力计算分析表明，尾矿坝在静力状态下是稳定的，且干滩长度越长，坝体越稳定。坝体在给定的地震力作用下，坝体的反应加速度的最大值都发生在坝体顶部，坝顶的水平向反应加速度无放大作用，竖向加速度反应均明显小于水平向加速度反应。结合实际条件尾矿坝坝坡液化的可能性很小，坝体不会发生液化。动力边坡稳定安全系数为1.26，表明动力作用下尾矿坝的边坡仍然是稳定的。

Contrastive study on the kinetic and static stability of Dongergou tailing dam in Xunyang County

this paper targets on Dongergou tailing dam in Xunyang County, the initial parameters were determined depended on experiences, while the kinetic and static parameters of materials were obtained by tests. E-B model was applied to static calculation, while the equivalent viscoelasticity constitutive model was applied to kinetic calculation, and Sweden slice method was used to calculate the stability. The results of static analysis show that the tailing dam will remain stable under the static state, and the longer the length of dry beach is, the more stable the tailing dam keeps. With the certain seismic force, the largest responding acceleration values of the dam body all appear at the top. The horizontal responding accelerations at the top have no amplification effect, while the vertical responding accelerations are all obviously smaller than the horizontal ones. Combined with the actual conditions, the possibility of dam slope liquidation is really low, so the dam body can not liquefy. The safety factor of kinetic slope stability is 1.26, which indicates the slope of the tailing dam can still remain stable under kinetic state.