Research Article
Investigations of Coal-Rock Parting-Coal Structure (CRCS) Slip and Instability by Excavation
Table 2
Joint parameters of the model.
| | Mineral | Block properties | Content properties | | Density (GPa/m) | E (GPa/m) | (GPa/m | (GPa/m) | Coh. (MPa) | Fri. (°) | Ten. strength (MPa) | Res. coh. (MPa) | Res. fri. (°) | Res. ten. strength (MPa) |
| | Fine sandstone | 2400 | 15.2 | 32426 | 12970.4 | 4.6 | 32 | 2.2 | 0 | 25 | 0 | | Siltstone | 2600 | 9.62 | 21258 | 8503.2 | 3.3 | 30 | 1.8 | 0 | 26 | 0 | | Coal | 1400 | 4.06 | 5876 | 2350.4 | 2.7 | 24 | 1.0 | 0 | 20 | 0 | | Mudstone | 2400 | 7.80 | 14488 | 5795.2 | 6.4 | 30 | 3.4 | 0 | 24 | 0 |
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