一个露天矿的边坡角可做得多陡?边坡稳定性如何?这对露天矿具有重大经济意义,也是一件对露天矿工作人员有关系的事。这二方面的问题影响着整个国家,因为我们的文化发展取决于不断生产出低成本的矿产品。例如,对深为122米、直径为457米、设计坡角为35°的露天矿,只是平均加陡1°就将 How steep slope angles can be achieved in an open pit mine? What is the stability of the slopes? This is of great economic importance to opencast mines and is also a matter of concern for surface miners. These two issues affect the entire country, because our cultural development depends on the continuous production of low-cost minerals. For example, for an open pit mine 122 meters deep, 457 meters in diameter and designed with a slope angle of 35 °, only an average steep 1 °