| 松软矿体有底柱高分段崩落法的改进方案 |
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| 引用本文： | 谢健安.松软矿体有底柱高分段崩落法的改进方案[J].化工矿物与加工,1993(1). |
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| 作者姓名： | 谢健安 |
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| 作者单位： | 锦屏磷矿 |
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| 摘 要： | 锦屏磷矿对其东山采区松软矿体所使用的分段崩落法做了集中快速采准施工、增加分段高度、实行水平或上向扇形深孔连续崩矿等改进,简化了采场结构,矿石损失率由原来的63％下降到改进后的20.34％,贫化率由23.92％下降到15.10％。
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| 关 键 词： | 松软矿体 分段崩落法 磷矿开采 |
Improvements on sill pillar sublevel caving method for soft orebodies |
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| Xie Jian''''an.Improvements on sill pillar sublevel caving method for soft orebodies[J].Industrial Minerals and Processing,1993(1). |
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| Authors: | Xie Jian'an |
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| Affiliation: | Jinping Phosphate Mine |
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| Abstract: | Some inprovements on a sublevel caving method applied to soft orebodies in Dongshan area of Jin-ping Phosphate Mine has been made by concentrated and quickened development,increased sublevel height and continuous caving with horizontal and upward fan- shaped boreholes. As a result,the stope structure is simplified and ore loss and dilution ratioes are brought down to 20. 34% and 15.10% respectively from the original 63% and 23. 92%. |
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| Keywords: | Loose rock mass Sublevel caving Phos- phate mining |
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