In situ horizontal field stresses in station box orientation
| Layer | Perpendicular to wall: MPa | Parallel to wall: MPa |
|---|---|---|
| Residual soil | 0·7σv | 0·7σv |
| SHA-V/SHA-IV/SHA-III | 1σv | 1σv |
| SHA-II/SHA-I | 1·75σv + 0·39 | 1·65σv + 0·37 |
| SAN-II/SAN-I | 1·75σv + 1·97 | 1·65σv + 1·85 |
| Layer | Perpendicular to wall: MPa | Parallel to wall: MPa |
|---|---|---|
| Residual soil | 0·7 | 0·7 |
| SHA-V/SHA-IV/SHA-III | 1 | 1 |
| SHA-II/SHA-I | 1·75 | 1·65 |
| SAN-II/SAN-I | 1·75 | 1·65 |
σv, overburden stress
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