Research Article
Stability Analysis and Parameter Optimization of Deep Excavation Supporting System in Granular Soils
Table 2
Physical and mechanical parameters of surrounding soils.
| Types of soils | The thickness of the soil layer (m) | Natural density (kN·m−3) | Cohesion (kPa) | Internal friction angle (°) |
| Miscellaneous soil | 3.85 | 18.5 | 10 | 5.0 | Silty clay | 2.25 | 18.5 | 12 | 6.5 | Medium coarse sand | 5.4 | 17.5 | 3 | 29.6 | Gravel sand | 5.8 | 20.3 | 2 | 33.0 | Pebble | 5.3 | 20.5 | 2 | 34.0 |
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