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| Practice of safe and high-efficient mining of 16-Line Vertical Pillar in Jinchuan No.2 Mine |
| Received:April 28, 2015 Revised:May 04, 2015 |
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| DOI： |
| KeyWord:vertical pillar; design principle ; mining technology; stratified road |
| Author | Institution |
| YANG Zhiqiang |
金川集团股份有限公司 |
| LI Litao |
北京科技大学 |
| gaoqian |
北京科技大学 |
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| Abstract: |
| Fully mining and using of non-renewable resources is the important measure of realizing sustainable development of mine enterprise. According to the temporary leaving 16-line vertical pillar in large area continuous mining of the No.2 mining area of Jinchuan Group, The paper develops mining technology and engineering practice research of the 16-line vertical pillar based on stope stability. First, the paper analyzes forced state and effect on stope stability of 16-line vertical pillar. The results show that vertical pillar produces the whole plastic yield destruction under high stress in large area continuous mining of the No.2 mining area. The whole pillar supporting effect of stope decreases gradually and no obvious while mining level lower than vertical pillar, The pillar of stope stability will not have a significant impact. Therefore, safe mining design and mining technology of the 16-line vertical pillar was developed, and safe mining engineering practice of the 16-line vertical pillar was carried out. |
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