摘要
系统介绍了玉石洼铁矿用无底柱分段崩落法开采缓倾斜中厚矿体的理论依据及其实施效果,并据此讨论了无底柱分段崩落法低贫损开采模式。
The thcorctical basis & practice results of non-sill-pil- lar sub-level caving method applied to the low dipping medium thick orcbody in Yushiwa Iron Mine are given.A low dilution & loss ra- tio mining model of non-sill-pillar sub-level caving method is also discussed.
关键词
无底柱
分段崩落法
放矿方式
中厚矿体
采矿
Non-sill-pillar sub-level caving method
Ore-draning mathod
low dilution & loss ratio miming modcl
