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,拉槽至,而目前无底柱矿大多用垂天井与平巷并配以中深孔联合拉槽的方法,但该方法在对矿体上盘回过程中损失贫化较大。