Research Article
Study on the Allowable Exposure Time of Temporary Goaf in the Open Stope and Backfill Mining Method with Large Structure Parameters
Table 6
Recommended creep parameters of iron ore.
| | Specimens | Stress level (% R) | Σs (MPa) | EB (GPa) | EK (GPa) | ηK (GPa.d) | ηB (GPa.d) |
| | Y2-6 | 50 | — | 24.90 | 16.32 | 1329.16 | — | | Y2-7 | 60 | — | 25.45 | 24.16 | 2687.45 | — | | Y2-8 | 70 | — | 25.05 | 27.82 | 4736.85 | — | | Y2-9 | 80 | 82.73 | 24.75 | 35.24 | 8935.82 | 4308.37 |
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