square-set stoping

硐库开挖爆破 ... 11 摆式掏槽 swing cut 12 方框支架回采法 square-set stoping ...

...支护开采法(stulled stoping)；2)方框支护开采法(square-set stoping)；3)分层充填开采法(cut and fill method，filled stopes)。