Research Article
Quantitative Inversion of Water-Inrush Incidents in Mountain Tunnel beneath a Karst Pit
Table 12
Mechanics parameters of surrounding rock and lining structure.
| | Name of surrounding rock | Severe γ (kN/m3) | Bulk modulus K (GPa) | Shear modulus G (GPa) | Elastic modulus E (GPa) | Poisson’s ratio μ | Cohesion C (MPa) | Friction angle φ (°) |
| | Grade V surrounding rock | 18 | 1.67 | 0.56 | 1.5 | 0.35 | 0.1 | 23 | | Infiltration zone | 16 | 0.83 | 0.18 | 0.5 | 0.4 | 0.05 | 21 | | Reinforced Grade V surrounding rock | 19 | 2.8 | 0.9 | 2.5 | 0.35 | 0.2 | 25 | | Grade V surrounding of lining structure | 26 | 15.6 | 12.7 | 30 | 0.18 | — | — |
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