Research Article
Numerical Study on the Impact Instability Characteristics Induced by Mine Earthquake and the Support Scheme of Roadway
Table 3
Mechanical parameters of joints.
| | Lithology name | Normal stiffness (N/m) | Shear stiffness (N/m) | Friction angle (°) | Cohesive (MPa) | Tension (MPa) |
| | 3# coal | 2000 | 800 | 18 | 3.0 | 1 | | Mudstone | 3300 | 1400 | 20 | 8.2 | 3 | | Sandstone | 7500 | 3100 | 26 | 15.8 | 6 |
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