Research Article
Analysis of the Tunneling Blast Safety Criterion Based on Longitudinal Shocks
Table 3
Physical and mechanical parameters.
| | Density (kg/m3) | Compressive strength (MPa) | Tensile strength (MPa) | Internal friction angle (°) | Poisson’s ratio | Dynamic load tensile stress (MPa) |
| | 2820 | 75.5 | 3.0 | 75 | 0.2 | 4.0 |
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