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.