Research Article
Safety Risk Analysis and Protective Control of Existing Pipelines Affected by Deep Pit Excavation in Metro Construction
Table 1
Summary of soil parameters.
| | Soil property | Saturated density rsat (kN/m3) | Compression modulus Es (MPa) | Friction angle Φ (°) | Cohesion C (kPa) | Averages of soil thickness |
| | Miscellaneous fill | 18.94 | 4.08 | 11.5 | 31 | 1.75 | | Silty clay 1 | 18.88 | 5.36 | 7.44 | 37.92 | 3.99 | | Silty clay 2 | 19.11 | 5.71 | 18.86 | 21.0 | 2.15 | | Silty clay 3 | 19.32 | 9.26 | 26.48 | 14.6 | 1.51 | | Silty clay 4 | 18.74 | 6.27 | 20.34 | 21.0 | 3.54 | | Silt 1 | 18.04 | 4.60 | 4.5 | 6.0 | 2.10 | | Silt 2 | 18.85 | 8.23 | 27.45 | 15.33 | 3.06 | | Fine sand 1 | 19.21 | 11.7 | 20.2 | 10.0 | 3.06 | | Fine sand 2 | 18.9 | 11.98 | 32.73 | 7.57 | 8.01 | | Coarse sand | 20.8 | 17.7 | 25 | 10 | 3.66 | | Silty clay 5 | 18.45 | 4.85 | 16.25 | 18.15 | 3.0 |
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