Research Article
Research on the Stress and Deformation Characteristics of Circular Foundation Pit during Excavation in Sand Soil
Table 1
Summary of relevant soil parameters.
| | Soil layers | Elastic modulus (kN/m2) | Poisson’s ratio | Friction angle (°) | Cohesion (kN/m2) | Natural heavy (kN/m3) | Permeability coefficient (cm/s) |
| | Silt | 3000 | 0.30 | 3 | 5 | 15.4 | 1.15e − 6 | | Muddy soil | 50000 | 0.27 | 5 | 8 | 16.5 | 1.18e − 6 | | Fine sand | 80000 | 0.23 | 18 | 0 | 19.0 | 5.01e − 3 | | Medium sand | 120000 | 0.24 | 25 | 0 | 19.5 | 1.21e − 2 | | Coarse sand | 200000 | 0.22 | 28 | 0 | 18.8 | 3.12e − 2 | | Strong weathered mudstone | 500000 | 0.19 | 20 | 50 | 19.9 | 1.02e − 4 | | Middle weathered mudstone | 1000000 | 0.17 | 30 | 450 | 20.5 | 1.14e − 5 | | Microweathered mudstone | 1400000 | 0.15 | 35 | 600 | 20.7 | 9.71e − 7 |
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