Research Article
Stability Control Mechanism of High-Stress Roadway Surrounding Rock by Roof Fracturing and Rock Mass Filling
Table 4
The mechanical parameters of the rock mass used in the UDEC model.
| | Lithology | Block properties | Contact properties | | Density (kg/m3) | E (GPa) | Kn (GPa/m) | ks (GPa/m) | C (MPa) | (°) | σt (MPa) |
| | Fine sandstone | 2750 | 8.3 | 286.2 | 114.5 | 2.3 | 31 | 4.3 | | Mudstone | 1900 | 2.2 | 112.4 | 45 | 1.2 | 28 | 0.7 | | Sandy mudstone | 2450 | 4.1 | 187.8 | 75.1 | 1.5 | 30 | 1.9 | | Siltstone | 2680 | 5.5 | 215.9 | 84.2 | 2.0 | 31 | 3.2 | | Mudstone | 1900 | 2.2 | 112.4 | 45 | 1.2 | 28 | 0.7 | | Coal seam | 1600 | 0.4 | 86.2 | 34.5 | 0.5 | 24 | 0.4 | | Mudstone | 1900 | 2.2 | 112.4 | 45 | 1.2 | 28 | 0.7 | | Fine sandstone | 2750 | 8.3 | 286.2 | 114.5 | 2.3 | 31 | 4.3 | | Siltstone | 2680 | 5.5 | 215.9 | 84.2 | 2.0 | 31 | 3.2 |
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