Research Article
Distribution and Variation of Mining-Induced Stress in the Reverse Fault-Affected Coal Body
Table 1
Rock mechanics parameters of 1503 working face in Xinchun coal mine.
| Lithology | Thickness (m) | Density (kg·m3) | Elastic modulus (GPa) | Poisson’s ratio | Bulk modulus (GPa) | Shear modulus (GPa) | Cohesion (MPa) | Tensile strength (MPa) | Internal friction angle (°) |
| Sandstone | 49 | 2540 | 17.55 | 0.24 | 14.7 | 8.1 | 10.0 | 11.55 | 26 | Sandy mudstone | 12 | 2600 | 15.45 | 0.27 | 10.5 | 7.1 | 1.7 | 2.30 | 30 | Coal | 2 | 1350 | 3.53 | 0.33 | 10.5 | 6.5 | 1.2 | 0.90 | 23 | Mudstone | 8 | 2340 | 4.92 | 0.35 | 9.8 | 7.1 | 0.5 | 1.55 | 39 | Silty mudstone | 15 | 2530 | 7.33 | 0.31 | 10.4 | 7.3 | 0.7 | 1.65 | 38 | Siltstone | 17 | 2580 | 10.23 | 0.31 | 13.4 | 7.6 | 1.4 | 1.85 | 37 | Fault | 2 | 2000 | 1.10 | 0.12 | 4.1 | 1.3 | 0.4 | 0.2 | 5 |
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