Research Article
Study on Sensitivity Parameters Analysis of Grouting Reinforcement Underpassing Existing Subway Tunnel by Numerical Modeling
Table 2
Mechanical parameters of main rock mass and joint.
| | Density (kg/m³) | Bulk modulus (GPa) | Shear modulus (MPa) | Cohesion (kPa) | Internal friction angle (°) | Tensile strength (MPa) |
| | 2100 | 0.138 | 59.6 | 42 | 30 | 1 | | Normal stiffness (GPa) | Tangential stiffness (GPa) | Cohesion (MPa) | Internal friction angle (°) | Tensile strength (MPa) | | 0.1 | 0.1 | 0 | 25 | 0 |
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