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本文研究了金刚石露天矿降深时优化最终裁坡角从而减少剥宕量、降低生产成本、矿山生产盈利最大的问题；研究了拜天矿最终裁坡角同边裁安全储备系数、剥岩量大小和生产可靠性等因素的辩证关系，给出了若干规律性的结论，并以计算机解算某一露天矿降深问题为案例，说明了这些结论的可信性，解算结果证实，对于该露天矿的条件，在降深部采用的最终帮坡角为αT＝35．3°、边裁安全储备系数为1．23、生产可靠性为0．876时，矿山可能获得最大盈利。
This paper studies the optimization of the final cutting angle to reduce the amount of stripping, reduces the production cost and maximizes the mine production profit when the diamond open pit decreases. Size and reliability of production and other factors of the dialectical relationship, given a number of regular conclusions, and to solve the problem of a certain deep-pit mine deepening case, illustrates the credibility of these conclusions, the solution results confirm that for the The condition of this open-pit mine is that the ultimate mound slope angle adopted in the deepening section is αT = 35.3 °, the safety margin factor of 1.30 and the production reliability of 0.876, the mines may get the maximum profit.