Research Article
Estimations of the Jacking Forces of Large-Sized Rectangular Jacking Pipes Based on a Displacement Control Method
Table 3
Physical and mechanical properties of various layers.
| | Soil layer | Level number | Thickness (m) | Moisture content (%) | Unit weight of the soil (kN/m3) | Natural void ratio | Cohesive force (kPa) | Internal friction angle (°) | Modulus of compression (MPa) |
| | Qml | ① | 0–1.70 | — | 18.0 | — | 9.7 | 10.2 | — | | Clay | ② | 1.70–22.10 | 26.1 | 20.8 | 0.731 | 29.7 | 24.9 | 7.6 | | Fine sand | ③ | 22.10–31.50 | 13.7 | 17.6 | 0.808 | 3.7 | 29 | — |
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