kerve

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.

无底柱为代表的崩落采矿法,割拉槽至关重要,而目前无底柱采矿大多采割天井与割平巷并配孔联合拉槽的割方法,但该方法在对矿体上盘回采过程损失贫化较大。