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通过对无底柱崩落法爆破边界条件的分析，提出了一种经济可行的回采炮孔布置方式，并在白银公司深部铜矿的炮孔施工中获得成功。
Based on the analysis of the blasting boundary conditions of bottomless collapse caving method, an economically feasible arrangement of blasting holes was put forward, and the blasting hole construction in the deep copper mine of Baiyin Company was successful.