崩落

There's danger from falling rocks.

这里有石块儿落的危险。

However, the caving maybe happen because of too large transmogrification and rheologic fracture to high crustal stres.

统一流变断裂准则，最终形成了诱导条件下节理岩体持续大规模落判据。

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.

以无底柱为代表的落采矿法中,切拉槽至重要,而目前无底柱采矿大多采用垂直切天井与切并配以中深孔联合拉槽的切方法,但该方法在对矿体上盘回采过程中损失贫化较大。