Research Article
Theoretical and Numerical Research on V-Cut Parameters and Auxiliary Cuthole Criterion in Tunnelling
Table 1
Physical-mechanical parameters of the four types of rocks [
28].
| | Rock name | Density (g/cm3) | Poisson ratio | Longitudinal wave velocity (km/s) | Dynamic compressive strength (MPa) | Dynamic tensile strength (MPa) | Shear strength (MPa) |
| | Shale | 2.35 | 0.22∼0.4 (0.31) | 1.83∼3.97 (2.9) | 9.8∼98 (53.9) | 1.9∼9.8 (5.8) | 2.94∼29.42 (16.18) | | Sandstone | 2.45 | 0.23∼0.28 (0.25) | 2.44∼4.25 (3.3) | 19.6∼137.2 (78.4) | 3.9∼24.5 (14.2) | 7.85∼39.23 (23.54) | | Limestone | 2.42 | 0.26 | 3.43 | 29.4∼245 (137.2) | 4.9∼24.5 (14.7) | 9.81∼49.03 (29.42) | | Granite | 2.60 | 0.22 | 5.20 | 98∼245 (171.5) | 6.8∼24.5 (15.6) | 13.73∼49.03 (31.38) |
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The data in parentheses is the value taken in this paper.
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