Table 1 The mechanical properties of these strata.
Strata | Density (g/cm³) | Young’s modulus(MPa) | Poisson’s ratio | Internal friction angle(°) | Cohesive force(KPa) |
|---|---|---|---|---|---|
heavy silty Q3 loam | 1.8 | 23 | 0.3 | 22.5 | 41.5 |
heavy silty Q2 loam | 1.99 | 25 | 0.3 | 23.8 | 41.9 |
fully weathered Cretaceous argillaceous sandstone | 2.0 | 50 | 0.25 | 30 | 30 |
strongly weathered Cretaceous argillaceous sandstone | 2.3 | 100 | 0.3 | 35 | 60 |
moderately weathered Cretaceous argillaceous sandstone | 2.4 | 600 | 0.3 | 35 | 90 |
