丰山铜矿难采矿体矿块崩落法研究

丰山铜矿南缘矿带１１线以东矿体，原采用无底柱分段崩落法回采，由于该矿体矿岩极为破碎，巷道垮塌严重，致使大量矿石面临报损。为此，改用矿块崩落法回采，实施分区拉底新工艺，成功地回收了该矿段矿石，提高了经济效益。

A Study of Block Caving Method Used for Troublesome Orebody in Fangshan Copper Mine

In Fengshan Copper Mine, Caving without bottom pillar was preliminary adopted to mine the orebody in the east of 11 line in south ore belt. As the ore and rock in the ore zone are very broken and driftings collapse seriously, it will be faced that a great deal of ore is reported as loss. Thereby, it began to use block caving method for mining this ore zone, and some new techniques of drifting and supporting as well as partitioned bottom cutting were applied, as a result, the ore zone was mined out successfully and the econonic benefit was improved.