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| DEVELOPMENT AND APPLICATION OF LARGE DRAWING ORE TECHNOLOGY IN CAVING BLOCK |
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| DOI： |
| KeyWord:high-stage;drawing ore;recovery rate; |
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| 1.Beijing General Research Institute of Mining & Metallurgy;Beijing 100044;China;2.Tongkeng Mine of Liuzhou China Tin Group Co.Ltd.;Nandan 545006;Guangxi;China |
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| Abstract: |
| The solution of deep-hole caving safety pillar and stopes,and large drawing ore to eliminate potential causes of accidents in the veinlet fire zone of Tongkeng mine is applied.The drawing model is established based on a pilot study.And the caving ore is drawing under a layer of large rock which isolates the ore from upper fire ash.The ore recovery rate is up to 65.9 %. |
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