Research Article
Analysis of Stress Asymmetric Distribution Law of Surrounding Rock of Roadway in Inclined Coal Seam: A Case Study of Shitanjing No. 2 Coal Seam
Table 1
Numerical simulation of physical and mechanical parameters of coal and rock.
| Rock stratum | Thickness (m) | Density (kg·m−3) | Bulk modulus (GPa) | Shear modulus (GPa) | Friction (°) | Cohesion (MPa) | Tension (MPa) |
| (1) Siltstone | 4.6 | 2 460 | 8.49 | 6.47 | 32.1 | 5.7 | 3.77 | (2) Medium grain sandstone | 4 | 2 510 | 10.11 | 7.27 | 37.0 | 11.8 | 2.78 | (3) Mudstone | 2.9 | 2 530 | 7.79 | 5.34 | 31.5 | 1.85 | 1.54 | (4) Coal seam | 5.5 | 1 400 | 1.80 | 0.83 | 21.0 | 1.60 | 0.50 | (5) Siltstone | 9.2 | 2 460 | 8.49 | 6.47 | 32.1 | 5.7 | 3.77 |
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