Research Article
Deformation and Failure Evolution Law and Support Optimization of Gob-Side Entry in Weakly Cemented Soft Rock under the Influence of Fault
Table 4
Mechanical parameters of coal and rock.
| | Rock stratum name | Density (kg/m3) | Bulk modulus (GPa) | Shear modulus (GPa) | Internal friction angle (°) | Cohesion (MPa) | Tensile strength (MPa) |
| | Conglomerate | 2690 | 2.28 | 1.24 | 30 | 3.20 | 1.4 | | Sandy mudstone | 2390 | 1.68 | 0.89 | 25 | 2.50 | 0.9 | | 3-1 coal | 1190 | 1.65 | 0.88 | 28 | 2.56 | 1.1 |
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