Research Article
A New Unified Solution for Deep Tunnels in Water-Rich Areas considering Pore Water Pressure
Table 1
Geometrical and mechanical parameters.
| Parameters | Values |
| Radius of the tunnel, (m) | 3 | Initial stress, (MPa) | 16.2 | Support pressure, (MPa) | 0 | Lateral stress coefficient | 1.5 | Pore water pressure, (MPa) | 5 | Pore water pressure coefficient, | 1 | | 12 | Poisson’s ratio, | 0.25 | Young’s modulus, (MPa) | 2400 | Initial cohesion, (MPa) | 3.5 | Residual cohesion, (MPa) | 1.5 | Dilation angle, (°) | 10 |
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