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| EXPERIMENT AND APPLICATION OF UNDERGROUND LARGE-DIAMETER LONGHOLE MINING TECHNIQUE |
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| DOI： |
| KeyWord:VCR Bunch longhole Tight-face blasting, |
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| Mining Department |
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| Abstract: |
| Since 1980's, different underground large-diameter longhole mining methods have been tested by our institute and successfully applied to different conditions. These methods include VCR mining, bench-and-trail method, single-step tight-face blasting stoping and bunch longhole panel caving, etc.
In this paper, the technical characteristics, application conditions, blasting processes, blasting-effect control and technical-economical effects of above-mentioned mining methods are briefly introduced. |
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