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讨论深部采矿参数的选定,认为最优崩矿步距应由公式R=1/10(9atgθ+(81a~2tg~2θ+60c~2)~(1/2)来选取;炸药单耗应在0.300 kg/t以上;炮孔布置应采用“小抵抗线大孔底距”法。
Discuss the selection of deep mining parameters, that the optimal collapse step should be selected by the formula R = 1/10 (9atgθ + (81a ~ 2tg ~ 2θ + 60c ~ 2) ~ (1/2) At 0.300 kg / t or more; blasthole layout should be used “small resistance line big hole bottom distance ” method.