Research Article
Surrounding Rock Stresses on a Working Face-End Roof under Mining Influence
Table 1
Basic parameters of rock mechanics.
| | Lithology | Internal friction angle (°) | Cohesion (MPa) | Tensile strength (MPa) | Elastic modulus (GPa) | Poisson’s ratio (μ) | Density (kg·m−3) |
| | Mudstone | 33.0 | 4.50 | 0.93 | 6.20 | 0.12 | 2597 | | Sandy shale | 33.6 | 10.08 | 1.03 | 3.00 | 0.15 | 2577 | | Shale | 33.4 | 10.11 | 1.20 | 10.60 | 0.11 | 2653 | | Limestone | 36.0 | 12.32 | 3.41 | 23.60 | 0.12 | 2682 | | Coal | 29.5 | 2.11 | 2.60 | 4.20 | 0.22 | 1420 | | Fine sandstone | 33.4 | 10.12 | 1.95 | 18.60 | 0.21 | 2582 | | Sandy mudstone | 33.0 | 4.50 | 0.93 | 6.20 | 0.12 | 2597 | | Mudstone | 33.0 | 4.26 | 1.05 | 5.00 | 0.26 | 2753 |
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