Research Article
Theoretical and Numerical Research on V-Cut Parameters and Auxiliary Cuthole Criterion in Tunnelling
Table 7
Physical-mechanical parameters of the surrounding rocks.
| | Surrounding rock grade | Density (kg/m3) | Compressive strength (MPa) | Tensile strength (MPa) | Shear strength (MPa) | Longitudinal wave velocity (m/s) | Static Poisson ratio |
| | III | 2700 | 75 | 5.6 | 23.3 | 3350 | 0.23 | | IV | 2600 | 60 | 5.0 | 18.6 | 3200 | 0.23 |
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