Research Article
Stability Analysis of the Lining Reinforcement Structure of a Double-Track Heavy-Haul Railway Tunnel
Table 1
Parameters of surrounding rock.
| | Surrounding rock level | Bulk density γ (kN/m3) | Elastic reaction coefficient K (MPa/m) | Deformation modulus E (GPa) | Poisson ratio ν | Internal friction angle φ(°) | Cohesion с (MPa) | Calculated friction angle φс (°) |
| | IV | 20–23 | 200–500 | 1.3–6 | 0.3–0.35 | 27–39 | 0.2–0.7 | 50–60 |
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