尾矿坝准三维渗流计算分析

山谷型尾矿库的二维渗流分析由于未考虑坝轴方向的尺寸,导致计算的浸润线偏高,使结果偏于危险,三维计算结果虽然较符合实际,但是耗时耗力。为解决这一问题,提出了一种尾矿库渗流计算的新方法。该方法在尾矿库的二维建模中选取边界及内部的特征点,通过插值法将该类点的轴向尺寸纳入计算。计算的浸润线与三维结果较为接近,能够在一定程度上反映渗流的真实情况,且操作较为简单,原理清晰,具有一定的实用价值。

Calculation and Analysis of Quasi-three-dimensional Seepage of Tailings Dam

The two-dimensional seepage analysis of the valley type tailings pond did not take into consideration the dam axial dimensions， which leads to a high saturation line in calculation with more dangers. The three-dimensional calculation is more realistic， but it consumes more time and labors. In order to solve this problem， a new method for seepage calculation of tailings pond is proposed. This method selects the boundary feature points and the internal feature points in the two-dimensional modeling of the tailings pond， and the axial dimensions of these points are used in the calculation by interpolation. The calculation results show that the obtained saturation line is close to the three-dimensional result， which can reflect the real situation of seepage to a certain extent. With simple operation and clear principle， this method has a certain practical value.