Research Article
Performance Investigation of Tunnel Lining with Cavities around Surrounding Rocks
Table 2
Material properties of concrete lining and surrounding rocks.
| Material | Physical and mechanical parameters |
| Surrounding rock | E = 500 MPa, ρ = 2200 kg/m3, μ = 0.35, c = 200 kPa, φ = 30° | Concrete lining | E = 28 GPa, ρ = 2400 kg/m3, fc’ = 11 MPa, ft = 1.1 MPa, μ = 0.2 |
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