Research Article
Overburden Migration and Failure Characteristics in Mining Shallow Buried Coal Seam with Thick Loose Layer
Table 5
The main mechanical and geometric parameters of the model.
| | Lithology | ρ (g/cm3) | σc (MPa) | Strata thickness (cm) |
| | Aeolian sand | 1.05 | 0.08 | 48.4 | | Fine sandstone | 1.87 | 0.30 | 23.3 | | Medium sandstone | 1.75 | 0.24 | 18.2 | | Coarse sandstone | 1.62 | 0.15 | 1.9 | | Sandy mudstone | 1.69 | 0.18 | 2.1 | | Fine sandstone | 1.87 | 0.30 | 7.5 | | Medium sandstone | 1.75 | 0.24 | 5.3 | | Fine sandstone | 1.87 | 0.30 | 4.2 | | Coal seam | 0.94 | 0.07 | 3.5 | | Fine sandstone | 1.87 | 0.30 | 7.5 |
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