Research Article
Numerical Analysis on the Behavior of Existing Tunnels Subjected to the Undercrossed Shield Tunneling at a Small Proximity
| No. | Soil stratum | Volumetric weight | Compression modulus | Consolidated quick shear test | Coefficient of horizontal stress | Poisson’s ratio | γ (kN/m3) | Es1-2 (MPa) | cq (kPa) | φq (°) | K0 | |
| ③1 | Silty clay | 20.2 | 6.45 | 30 | 15 | 0.74 | 0.30 | ③ | Silt | 20.2 | 8.71 | 20 | 26 | 0.55 | 0.28 | ③3 | Fine sand | 20.1 | 4.52 | 0 | 28 | 0.53 | 0.30 | ④2 | Silt | 20.8 | 12.18 | 18 | 24 | 0.76 | 0.28 | ④ | Silty clay | 20.5 | 8.43 | 26 | 14 | 0.36 | 0.27 | ⑥ | Silty clay | 20.3 | 10.35 | 35 | 15 | 0.55 | 0.29 |
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