According to the engineering conditions measured in the tailings dam field, a two-dimensional numerical model of a section was established by nonlinear finite element software ABAQUS. The results show that the infiltration line gradually decreases from the inner slope to the downstream outer dam, and then drops obviously after the initial dam. The overflow point is about 10m on the downstream dam toe. At present, the safety coefficient of the tailings dam under elevation is 1.63. The minimum coefficient slip surface is located in the middle and upper part of the outer side of the dam, sliding approximately in the same way. The safety factor of tailing tailings dam with minimum safety height is 1.43, the seepage spill point is about 25m above the dam toe. Both are greater than the standard minimum safety factor of 1.25. Therefore, the tailings dam is in a safe state.%根据尾矿库的现场实测的工程条件,采用非线性有限元软件ABAQUS建立某断面的二维数值模型.结果表明:浸润线从内侧坡面至下游外侧临空坝面逐渐降低,经过初期坝后下降明显,溢出点在下游坝趾上约10m处.现在标高下尾矿坝的安全系数为1.63,最小系数的滑面位于坝体外侧的中上部,近似圆弧滑动;最小安全超高下的终高尾矿坝安全系数为1.43,不稳定区域扩大,渗流溢出点在坝趾上约25m.均大于规范最小安全系数1.25.因此该尾矿坝的处于安全状态.
展开▼
