Research Article
An Analytical Calculation Method for Displacement Criterion on Tunnel Surrounding Rock Mass Stability
Table 2
Bias parameters to calculate allowable displacement.
| | Parameter | Value |
| | Tunnel radius (m) | 5.0 | | Overburden (m) | 50, 100,150 | | Deformation modulus (GPa) | 5.0 | | Poisson’s ratio | 0.3 | | Density (kg/m3) | 2500.0 | | Cohesion (MPa) | 0.6 | | Internal friction angle (°) | 35.0 | | Length of rock bolt (m) | 3.0 |
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