Research Article
Effect of Advancing Direction of Working Face on Mining Stress Distribution in Deep Coal Mine
Table 2
Mechanical parameters of falling gangue in goaf.
| | Parameter name | Density (kg/m3) | Bulk modulus (GPa) | Shear modulus (GPa) | Cohesion (MPa) | Internal friction angle (°) | Tensile strength (MPa) | Blocking parameters | | a | b | c | | (MPa) | — | (MPa) |
| | Value | 2000 | 1.2 | 0.6 | 0 | 30 | 0 | 60 | 15 | 20 |
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