Research Article
Deformation Control of Subway Tunnels Undercrossing Airport Facilities: A Case Study of the Xinzheng Airport Rail Transit Hub Project
Table 1
Excavation soil layer parameters of Xinzheng Airport Subway Station.
| Parameter | Value | Parameter | Value |
| 31C silt elastic modulus E (MPa) | 0.15 | 22B silty clay elastic modulus E (MPa) | 0.22 | 31C silt Poisson’s ratio, ν | 0.44 | 22B Poisson’s ratio, ν | 0.39 | 31B silt elastic modulus E (MPa) | 0.28 | 21 Silty clay elastic modulus E (MPa) | 0.19 | 31B silt Poisson’s ratio, ν | 0.42 | 21 Silty clay Poisson’s ratio, ν | 0.45 | 41A silty sand elastic modulus E (MPa) | 0.14 | Fracture permeability kf (m2) | 1.17 · 10−12 | 41A silt sand Poisson’s ratio, ν | 0.44 | Synchronous grouting pressure E (MPa) | 2 | Dynamic viscosity of cement paste μ (Pa s) | 1.84 · 10−2 | Soil tensile strength (MPa) | 0.05 | Soil compressive strength (MPa) | 0.1 | Cement slurry density | 1,300 |
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