对所有矿山来说 ,废石堆的自然安息角和边坡稳定性都是非常重要的。在传统的边坡稳定分析中 ,将边坡作为平面应变模型 ,事实上 ,从平面上看边坡是以曲线形状形成的 ,因此产生的边坡面在平面上或是凸形或是凹形。废石堆的三维形状类似于轴对称的旋转体 ,这就可采用二维网格或极坐标系统进行分析。本文采用了这种分析方法研究了澳大利亚北昆士兰基德斯顿金矿有限公司的一个 2 50m高坑内废石堆。分析结果表明 ,采用非线性莫尔 库仑包络线确定的破坏面位置较通常的线性包络线确定的深。平面上呈凹形的边坡极限稳定角至少要比直线形边坡的大 2°。另一方面 ,凸形边坡的极限稳定角要比直线形的小 0 5°。 For all mines, the natural rest and slope stability of the waste rock piles are very important. In the traditional slope stability analysis, the slope is taken as the plane strain model. In fact, the slope is formed in the shape of a curve from the plane. Therefore, the slope surface generated on the plane is either convex or concave . The three-dimensional shape of the waste pile is similar to an axisymmetric rotator, which can be analyzed using a two-dimensional grid or polar coordinate system. In this paper, we use this method to study a 250 m high pit litter stack at Kidston Gold Mine, North Queensland, Australia. The analysis results show that the location of the failure surface determined by the non-linear Mohr-Coulomb envelope is deeper than the usual linear envelope. The concave slope on the plane must be at least 2 ° larger than the straight slope. On the other hand, the limit stability angle of the convex slope is smaller than the straight line by 0 °.