Therefore,different mining methods including sublevel caving,sublevel open stoping with subsequent filling are tried to solve these problems.

• 采矿方法从充填法改为分段崩落法、阶段崩落法及分段空场嗣后充填法，使采矿方法不断改进和完善，提高了矿山生产能力和矿石回收率。