Research Article
Influence Factors’ Analysis of the Face-End Roof Leaks Exposed to Repeated Mining Based on Multiple Linear Regression
Table 3
Level values of each factor.
| | Test number | Mining height (m) | Tip-to-face distance (m) | Distance of coal seams (m) | Surrounding rock strength (MPa) | Support setting load (×103 kN) | Advancing speed (m/d) |
| | 1 | 2 | 0.5 | 3 | 1.0 | 4 | 2 | | 2 | 2.5 | 1.0 | 6 | 1.5 | 5 | 3 | | 3 | 3.0 | 1.5 | 9 | 2.0 | 6 | 4 | | 4 | 3.5 | 2 | 12 | 2.5 | 7 | 5 | | 5 | 4.0 | 2.5 | 15 | 3.0 | 8 | 6 |
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