Research Article
Modeling Rock Fracture Propagation and Water Inrush Mechanisms in Underground Coal Mine
Table 3
Mechanical properties of simulated rocks and coal.
| | Rock | Density (kg/m3) | Young’s modulus (GPa) | Poisson’s ratio | Friction angle (°) | Cohesion (MPa) | Tensile strength (MPa) |
| | Mudstone | 2500 | 10.0 | 0.27 | 35 | 1.2 | 1.4 | | 16 coal | 1400 | 9.0 | 0.25 | 35 | 2.0 | 1.0 | | Siltstone | 2600 | 5.8 | 0.25 | 41 | 9.5 | 4.2 | | Mudstone | 2500 | 10.0 | 0.27 | 35 | 1.2 | 1.4 |
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