无底柱分段崩落法 non-pillar sublevel caving
sublevel caving without sill pillar
- 丰山铜矿南缘采区应用无底柱分段崩落法采矿。
Sublevel caving method without sill pillar is adopted in the south section of Fengshan Copper Mine. - 并根据无底柱分段崩落法矿山的不同情况,提出了各种应用无贫化放矿的实施方案。
Aceording to the different conditions of mines applied non-sill sublevel caving method, various programmes for application of non-dilution ore drawing method are presented. - 在无底柱分段崩落法的采场出矿管理中,采用出矿量和截止出矿品位两个指标来确定放矿截止时间。
In the process of a drawing management of stope by sublevel caving method, the stopped time of drawing operation is determined based on two-indexes of both drawing volume and cut-off grade.