Research Article
Treatment and Effect of Loess Metro Tunnel under Surrounding Pressure and Water Immersion Environment
Table 4
Physical and mechanical parameters of the reinforcement ring.
| Material | Thickness (cm) | Density (kg/m3) | Poisson’s ratio | Cohesion (kPa) | Permeability coefficient (cm/s) | Internal friction angle (°) | Bulk modulus (MPa) | Shear modulus (MPa) |
| Grouting | 300 | 1990 | 0.2 | 70 | | 28.15 | | |
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