Research Article
Stability Analysis of Blasting Excavation for High Rock Slope of Highway Reconstruction and Expansion
Table 2
Mechanical parameters of materials in the blasting excavation area.
| | Weathering degree of rock | Elastic modulus (GPa) | Poisson’s ratio | Cohesion (kPa) | Internal friction angle (°) | Shear strength (MPa) | Compressivestrength(MPa) |
| | Strongly weathered limestone 1 | 5 | 0.2 | 20 | 29 | 2.7 | 26.3 | | Strongly weathered limestone 2 | 10 | 0.2 | 21 | 33 | 3.0 | 29.5 | | Moderately weathered limestone 1 | 20 | 0.2 | 24 | 51 | 3.3 | 31.2 | | Moderately weathered limestone 2 | 25 | 0.2 | 26 | 45 | 3.9 | 38.4 |
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