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t-test results of roof subsidence and support resistance.
| Parameter | Roof subsidence (mm) |
Support resistance (MPa) |
|---|---|---|
| Original roof (Mean ± SD) | 1153 ± 61.60 | 43.36 ± 4.96 |
| Cutting roof (Mean ± SD) | 765.33 ± 46.90 | 28.54 ± 2.49 |
| Mean Difference (Δ) | 387.67 | 14.82 |
| 95% Confidence Interval | [310.46,464.88] | [11.58,18.06] |
| t-value | 12.83 | 8.44 |
