Research Article
Damage Depth Test and Numerical Simulation of Stope Floor in Mining Face
Table 4
List of rock mass parameters.
| | Thickness(m) | Bulk modulus (GPa) | Shear modulus (GPa) | Cohesion (MPa) | Angle of friction (°) | Tensile strength (MPa) |
| | Top plate | 120 | 4.872 | 3.065 | 5.56 | 41 | 1 | | Coal seam | 2.6 | 1.952 | 0.953 | 1.98 | 35.1 | 0.429 | | Sandstone | 5.1 | 3.533 | 2.12 | 4.758 | 39.09 | 1.618 | | Sandy mudstone | 4.1 | 2.235 | 1.152 | 1.651 | 32.47 | 0.586 | | Coal seam, bauxite mudstone | 9.8 | 1.952 | 0.953 | 1.98 | 35.1 | 0.429 | | Sandstone | 5 | 3.533 | 2.12 | 4.758 | 39.09 | 1.618 | | Shale, bauxite mudstone | 5.9 | 1.875 | 0.865 | 1.25 | 39 | 0.303 | | Limestone | 9.5 | 5.655 | 3.893 | 3.46 | 36.03 | 0.48 |
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