Research Article
The Stability Factors’ Sensitivity Analysis of Key Rock B and Its Engineering Application of Gob-Side Entry Driving in Fully-Mechanized Caving Faces
Table 3
Physical mechanical parameters of the rock mass.
| Lithology | Bulk modulus (GPa) | Shear modulus (GPa) | Internal friction angle (°) | Cohesion (MPa) | Thickness (m) |
| Coarse-grained sandstone | 11 | 9 | 36 | 4.0 | 7 | Sandy mudstone | 16 | 12 | 32 | 3.5 | 20 | Siltstone | 20 | 16 | 33 | 6.0 | 10 | Siltstone | 20 | 16 | 33 | 6.0 | 6 | No. 5−1 coal seam | 8 | 6 | 28 | 1.5 | 3 | Mudstone | 6 | 5 | 28 | 4.0 | 2 | Sandy mudstone | 16 | 12 | 32 | 3.5 | 2 | No. 5−2 coal seam | 8 | 6 | 28 | 1.5 | 2 | Mudstone | 6 | 5 | 28 | 4.0 | 3 | Sandy mudstone | 16 | 12 | 32 | 3.5 | 3 | Siltstone | 20 | 16 | 33 | 6.0 | 3 | Sandy mudstone | 16 | 12 | 32 | 3.5 | 8 | Siltstone | 20 | 16 | 33 | 6.0 | 4 | No. 7 coal seam | 8 | 6 | 28 | 1.5 | 2 | Mudstone | 6 | 5 | 28 | 4.0 | 2 | Sandy mudstone | 16 | 12 | 32 | 3.5 | 1.5 | No. 8 coal seam | 8 | 6 | 28 | 1.5 | 7 | Sandstone | 12 | 10 | 38 | 7.0 | 28.5 |
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