Research Article
Study on the Allowable Exposure Time of Temporary Goaf in the Open Stope and Backfill Mining Method with Large Structure Parameters
Table 4
Calculation values of creep parameters of the iron ore.
| | Specimens | Creep stress σ (MPa) | Σs (MPa) | EB (GPa) | EK (GPa) | ηK (GPa.d) | ηB (GPa.d) |
| | Y2-6 | 81.80 | — | 35.57 | 23.32 | 1898.80 | — | | Y2-7 | 98.15 | — | 36.35 | 34.52 | 3839.21 | — | | Y2-8 | 114.51 | — | 35.78 | 39.74 | 6766.93 | — | | Y2-9 | 130.87 | 118.19 | 35.36 | 50.34 | 12765.45 | 6154.82 |
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