Research Article
Numerical Simulation of the Effect of Dynamic Stress on the Rock Surrounding a Mine Roadway
Table 1
Mechanical parameters of surrounding rock.
| | Rock formation | Thickness (m) | Density (kg·m−3) | Bulk modulus (GPa) | Shear modulus (GPa) | Cohesion (MPa) | Friction angle (°) | Tensile strength (MPa) |
| | Spotted mudstone | 11.5 | 2640 | 8 | 4.8 | 2.3 | 35 | 5 | | Fine/siltstone | 3.2 | 2700 | 12 | 8.1 | 4.0 | 37 | 7 | | Mudstone | 10 | 2640 | 8 | 4.8 | 2.3 | 35 | 5 | | 11–2 coal | 1.2 | 1300 | 8.5 | 4 | 0.5 | 28 | 2 | | Mudstone | 4.5 | 2640 | 8 | 4.8 | 2.3 | 35 | 5 | | 11–1 coal | 0.8 | 1300 | 8.5 | 4 | 0.5 | 28 | 2 | | Mudstone | 9 | 2640 | 8 | 4.8 | 2.3 | 35 | 5 |
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