Research Article
Study on the Influence of Tectonic Stress on Stability of Horseshoe-Shaped Tunnels
Table 4
Parameters of the calculation model.
| | Parameters | Angle α (°) | Cohesion C (MPa) | Frictional angle θ (°) | Elastic modulus E (GPa) | Poisson’s ratio μ | σ1 (MPa) | σ2 (MPa) | (MPa) |
| | A0 | 0 | 10.6 | 34 | 18.9 | 0.23 | 20.0 | 8.0 | 5.0 | | A1 | 30 | 10.6 | 34 | 18.9 | 0.23 | 20.0 | 8.0 | 5.0 | | A2 | 45 | 10.6 | 34 | 18.9 | 0.23 | 20.0 | 8.0 | 5.0 | | A3 | 60 | 10.6 | 34 | 18.9 | 0.23 | 20.0 | 8.0 | 5.0 | | A4 | 90 | 10.6 | 34 | 18.9 | 0.23 | 20.0 | 8.0 | 5.0 |
|
|
