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% | 0.0012 | 12.71% | 1.23 | 2 | 363.85 | 21.51% | 0.002 | 20.88% | 1.03 | 3 | 563.42 | 33.30% | 0.0026 | 26.26% | 1.27 | 4 | 395.06 | 23.35% | 0.0025 | 25.36% | 0.92 | 5 | 105.20 | 6.22% | 0.0014 | 14.79% | 0.42 |
| In total | 1691.71 | 100.00% | 0.0097 | 100% | 1.00 |
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