Research Article
Seismic Response Analysis of Deep Underground Roadways and Coal Pillars under the Influence of the Adjacent Goaf
Table 2
Physical and mechanical parameters used in the model.
| Name of coal and rock mass | Bulk modulus (GPa) | Shear modulus (GPa) | Density (kg/m3) | Cohesion (MPa) | Internal friction angle (°) |
| Siltstone | 9.1 | 3.8 | 2500 | 16 | 37 | Mudstone | 6.6 | 2.2 | 2550 | 10 | 35 | Fine sandstone | 9.2 | 4.0 | 2700 | 20 | 43 | Coal | 3.1 | 1.5 | 1420 | 5 | 22 | SDSH | 5.9 | 2.5 | 2620 | 13 | 29 | Medium-grain sandstone | 8.7 | 4.1 | 2500 | 18 | 40 |
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