我矿西山采矿场W_1—W_(10)线矿段为松软的锰磷矿层,顶底盘围岩均不稳固。过去采用分层崩落法开采。经过我矿职工多年来的摸索,逐步提高分层高度,改进了采矿工艺,实现了采场运搬机械化,成 功地使用了分段崩落采矿法。实践表明,这种采矿方法具有灵活性大、安全性好、产量稳定、结构简单和较好的技术经济指标等优点。现仅将分段崩落法在我矿的应用情况作如下介绍。 My mine Xishan mining site W_1-W_ (10) line is soft manganese phosphate rock, roof and roof rock are not stable. In the past, the use of stratified caving mining. After years of exploration work by mine workers, we gradually improved the stratification level, improved the mining technology, realized the mechanization of stope transportation and moved the staged caving mining method successfully. Practice shows that this mining method has the advantages of large flexibility, good safety, stable output, simple structure and good technical and economic indicators. Now only sub-caving method in mine application as follows.