Research Article
Influence of Mechanical Properties of Filling Paste on Overlying Strata Movement and Surface Settlement
Table 3
Mechanical parameters of coal and rock.
| | Rock stratum | Density (kgm3) | Bulk modulus (GPa) | Shear modulus (GPa) | Internal friction angle (°) | Cohesion (MPa) |
| | Quaternary topsoil | 2460.1 | 6.6 | 4.9 | 14.3 | 0.5 | | Medium grained sandstone | 2668.4 | 36.9 | 29.9 | 33.4 | 1.6 | | Siltstone | 2446.4 | 44.3 | 42.9 | 50.1 | 2.0 | | Fine grained sandstone | 2758.3 | 40.0 | 41.3 | 49.7 | 1.5 | | Coal seam | 1565.7 | 2.4 | 1.1 | 31.3 | 1.3 |
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