Research Article
Effect of Shaft Pillar Extraction on Stability of Main Shaft: A Case Study at Xincheng Gold Mine, China
| Simulative excavating steps | Mineral output/kt | Ore proportion/% | Shaft displacement/m | displacement proportion/% | MPI |
| 1 | 264.19 | 15.62% | 0.001236 | 10.07% | 1.55 | 2 | 363.85 | 21.51% | 0.002031 | 16.55% | 1.30 | 3 | 373.34 | 22.07% | 0.003656 | 29.80% | 0.74 | 4 | 295.83 | 17.49% | 0.003887 | 31.68% | 0.55 | 5 | 289.31 | 17.10% | −0.00022 | −1.79% | −9.55 | 6 | 105.20 | 6.22% | 0.00168 | 13.69% | 0.45 |
| In total | 1691.71 | 100% | 0.01227 | 100% | 1.00 |
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