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| The experimental research about non-pillar sublevel caving method in thin orebody |
| Received:August 13, 2013 Revised:August 30, 2013 |
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| DOI： |
| KeyWord:thin ore body mining; the width of the access; loose media |
| Author | Institution |
| Zhu Zehui |
北京科技大学土木与环境工程学院 |
| Ming Shixiang |
北京科技大学土木与环境工程学院 |
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| Abstract: |
| The non-pillar sublevel caving method has been widely used both at home and abroad, but the dilution rate of ore is high in production, especially for the excavation in thin orebody. Not only it increases the amount of cutting rock mass, but also it aggregates the ore dilution. This paper studies the ore-drawing through ultrawide accesses and ore dilution in thin orebody through in-door physical simulation, at the same time, compares the result with the draw method through narrow accesses. As the experimental result shows, draw method through wide access can decrease ore dilution and thus increase recovery rate, and based on that, we can provide theoretical basis for mining production. |
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