Research Article
Back Analysis of Geomechanical Parameters of Rock Masses Based on Seepage-Stress Coupled Analysis
Table 3
Physicomechanical parameters of the stratum.
| Stratum | Gravity (kN/m3) | Modulus of elasticity E (GPa) | Poisson ratio | Cohesion C (MPa) | Internal friction angle (°) |
| Strongly weathered sandstone | 22 | 5.1 | 0.33 | 0.9 | 20 | Weakly weathered sandstone | 22 | 12.5 | 0.30 | 1.2 | 23 | Metamorphic sandstone | 22 | 15.2 | 0.28 | 1.5 | 25 | Metamorphic quartz sandstone | 24 | 19.0 | 0.29 | 1.6 | 32 | Weakly weathered fine quartz sandstone | 24 | 21.0 | 0.28 | 1.5 | 35 |
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