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forced block caving method
expl.
阶段强制崩落采矿法
回采单元〈矿块、区〉中按阶段全高用凿岩爆破落矿,并在崩落岩覆盖下放矿的阶段崩落采矿法。该采矿法主要用中深孔或深孔爆破落矿,在缺少中深孔和深孔凿岩设备或矿石十分坚固而又破碎,使凿岩困难等特殊条件下用药室爆破落矿
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