Research Article

Numerical Analysis on the Behavior of Existing Tunnels Subjected to the Undercrossed Shield Tunneling at a Small Proximity

Table 1

Soil parameters.

No.Soil stratumVolumetric weightCompression modulusConsolidated quick shear testCoefficient of horizontal stressPoisson’s ratio
γ (kN/m3)Es1-2 (MPa)cq (kPa)φq (°)K0

1Silty clay20.26.4530150.740.30
Silt20.28.7120260.550.28
3Fine sand20.14.520280.530.30
2Silt20.812.1818240.760.28
Silty clay20.58.4326140.360.27
Silty clay20.310.3535150.550.29