Since the method causes serious depletion of ore during mining of upper plate,the inclined cutting raise heading together with inclined medium or deep hole kerve is suggested.
以无底柱为代表的崩落
矿法中,切割拉槽至关重
,
前无底柱
矿大多


切割天井与切割平巷并配以中深孔联合拉槽的切割方法,但该方法在对矿体上盘回
过程中损失贫化较大。


时, 我们脑海中会浮现出我们
象中的

盘


