Research Article
Analysis on the Influence Degree of Deformation Control Factors of Deep-Buried Roadway’s Fractured Surrounding Rock Using Orthogonal Design
Table 3
Rock lithology and mechanics parameters of the numerical model.
| | Strata and main lithology | Density (kg·m−3) | Bulk modulus (GPa) | Shear modulus (GPa) | Internal friction angle (°) | Cohesion (MPa) | Tensile strength (MPa) |
| | T1y1 | Mudstone/sandstone | 2720 | 2.6 | 2.1 | 31 | 2.5 | 2.9 |
| | P3c | Bedded limestone | 2700 | 2.8 | 1.5 | 29 | 1.8 | 1.5 |
| | P3l | C5 coal | 1 480 | 1.0 | 0.5 | 25 | 0.8 | 1.2 | | C5 coal floor | 2 720 | 2.4 | 1.5 | 29 | 2.1 | 1.2 | | C3 coal | 1 510 | 0.7 | 0.4 | 24 | 1.2 | 1.0 | | C1 coal roof | 2 600 | 1.7 | 1.4 | 31 | 1.5 | 1.9 | | C1 coal | 1 540 | 0.6 | 0.4 | 25 | 0.9 | 1.0 | | C1 coal floor | 2 620 | 2.1 | 1.2 | 23 | 1.2 | 1.3 |
| | P2m | Layered limestone | 2 710 | 3.8 | 2.5 | 30 | 2.8 | 2.8 |
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