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| RESEARCH ON SAFE AND EFFICIENT MINING METHOD OF RESIDUAL ORE UNDER COMPLEX HAZARDOUS SITUATION WITH GOAF GROUP |
| Received:January 25, 2013 Revised:June 09, 2013 |
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| DOI： |
| KeyWord:goaf group; residual mineral mining; variable resistance line; the region mass caving |
| Author | Institution |
| FENG Panxue |
北京矿冶研究总院 |
| XIE Lianku |
北京矿冶研究总院 |
| LIU Jiandong |
北京矿冶研究总院 |
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| Abstract: |
| According to residual ore under complex hazardous situation with goaf group in Keketale Lead-zinc Mine, with the aid of bundle-holes blasting of variable resistance line, the overall technical solution with region mass caving of deep bundle-holes as primary and supplemented by edge ore blasting of medium-length hole is adopted to recover residual ore. The large crater base structure of concentrated ore drawing is formed by expanding mine-out area bottom. The key technical scheme not only effectively solve complex hazardous situation with goaf group, but also realize mass efficient mining of residual ore. |
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