Research Article
Simulation Research for the Influence of Mining Sequence on Coal Pillar Stability under Highwall Mining Method
Table 1
The mechanical parameters of coal and rock.
| | Lithology | Bulk modulus (GPa) | Shear modulus (GPa) | Cohesion (MPa) | Friction (°) | Tensile strength (MPa) | Thickness (m) |
| | Mudstone | 1.19 | 1.26 | 2.0 | 30 | 1.5 | 20.0 | | Limestone | 1.79 | 1.89 | 4.2 | 38 | 3.0 | 10.0 | | Siltstone | 2.90 | 2.27 | 2.3 | 32 | 1.7 | 5.0 | | Mudstone | 1.19 | 1.26 | 2.0 | 30 | 1.5 | 4.0 | | Coal | 0.09 | 0.08 | 1.5 | 25 | 0.3 | 2.0 | | Mudstone | 1.19 | 1.26 | 2.0 | 30 | 1.5 | 3.0 | | Siltstone | 2.90 | 2.27 | 2.3 | 32 | 1.7 | 6.0 |
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