Research Article
Optimal Analysis of Tunnel Construction Methods through Cross Passage from Subway Shaft
Table 3
Physical and mechanical parameters of model.
| | Material | Unit weight (kN/m3) | Elastic modulus (MPa) | Poisson’s ratio | Angle of internal friction (°) | Cohesion (kPa) | Thickness (m) |
| | Miscellaneous fill | 16.5 | 9.0 | 0.43 | 16.0 | 5.0 | 2.0 | | New loess | 15.8 | 13.5 | 0.375 | 21.0 | 25.0 | 11.0 | | Paleosol | 17.3 | 24.0 | 0.29 | 20.0 | 35.0 | 8.0 | | Old loess | 15.9 | 18.0 | 0.35 | 20.0 | 30.0 | 17.0 | | Ring beam | 25 | 30,000 | 0.2 | — | — | 1.0 | | Early support | 22.0 | 23,500 | 0.2 | — | — | 0.25 | | Temporary support | 22.0 | 17,500 | 0.2 | — | — | 0.1 |
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