Research Article
Effect of Subway Excavation with Different Support Pressures on Existing Utility Tunnel in Xi’an Loess
Table 3
Soil basic physical property index.
| | Soil layer | (kN/m3) | (MPa) | | | | | | | |
| | ① 1-1 artificial fill | 18.1 | 4.3 | 0.28 | 20.24 | 30.99 | — | — | — | — | | ② 1-2 plain fill | 17 | 4 | 0.33 | 32.94 | 67.57 | — | — | — | — | | ③ 3-1-3 new loess | 18.3 | 6 | 0.33 | — | — | 0.10206 | 0.00912 | 0.866 | 0.77 | | ④ 3-2-2 paleosol | 18.9 | 8 | 0.31 | — | — | 0.07687 | 0.00782 | 0.756 | 0.69 | | ⑤ 4-4 silty clay | 20.1 | 13 | 0.3 | — | — | 0.06514 | 0.00782 | 0.64 | 0.77 |
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