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
柱为代表
崩落
矿法中,
割拉
至关重要,而目前
柱
矿大多
用垂直
割天井与
割平巷并配以中深孔联合拉

割方法,但该方法在对矿体上盘回
过程中损失贫化较大。



