当露天矿田尺寸比较有限、平面呈圆形时，在境界的形成和边帮稳定坡角的确定中，边帮的结构起主要作用。以穿孔爆破方法建造倾斜运输平台和保安平台的传统方法，不能保证达到边坡的稳定极限，并且实际上已无任何潜力可挖。在分析的基础上确定了改进金伯利岩（檄榄岩）露天矿边 When the size of the open pit orefield is relatively limited and the plane is circular, the structure of the side gang plays a major role in the formation of the boundary and the determination of the stable side angle of the side gang. The traditional method of building inclined transport platforms and security platforms with perforated blasting methods can not guarantee the stability limit of the slope and in fact has no potential to dig. On the basis of the analysis, it is determined that the improvement of the open pit of kimberlite (the garnet massif)