Table 2 Physical and mechanical parameters for numerical computation
Soil type | Element type | Unit weight γ (kN/m3) | Cohesion c (kPa) | Internal friction angle φ (°) | Elastic modulus E (MPa) | Poisson’s ratio ν | |
|---|---|---|---|---|---|---|---|
Natural loess | Entity | 16.0 | 79 | 24.8 | 16 | 0.30 | |
Saturated loess | Entity | 18.5 | 29 | 21.6 | 11 | 0.35 | |
Lining | Entity | 25.0 | – | – | 34,500 | 0.15 | |
Shield machine | Shell | 78.0 | – | – | 206,000 | 0.28 | |
Equivalent layer | Lining | 21.0 | – | – | 300 | 0.20 | |