Research Article
Effect of Underground Coal Mining on Slope Morphology and Soil Erosion
Table 1
Main strata and lithological parameters of the model.
| Stratigraphic lithology | Bulk modulus (MPa) | Shear modulus (MPa) | Tensile strength (MPa) | Cohesion (MPa) | Internal friction angle (°) | Density (kg/cm3) |
| Sandy mudstone | 3000 | 2250 | 0.75 | 2.16 | 36 | 2510 | Coarse sandstone | 4200 | 2900 | 1.5 | 5 | 34 | 2560 | Medium sandstone | 3300 | 2500 | 1.2 | 4 | 37 | 2580 | Fine sandstone | 2700 | 1600 | 1 | 2 | 35 | 2540 | Conglomerate | 3330 | 2000 | 8.5 | 3 | 38 | 2300 | 4# coal | 1000 | 0.46 | 0.6 | 1.2 | 28 | 1430 | Loess | 280 | 0.09 | 0.35 | 0.85 | 25 | 1960 |
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