Research Article
Effects of Soil Properties on the Performance of TRD Cut-Off Wall
Table 1
Physical and mechanical indices of soil layers.
| | Soil layer | Elevation of layer bottom (m) | Unit weight γ (kN·m−3) | Consolidation quick-direct indices | SPT blow count | Permeability coefficient (cm·s−1) | | Cohesion (kPa) | Internal friction angle, φ (°) |
| | 1. Filing soil | 4 | — | — | — | 3.3 | 1.50 × 10−3 | | 2. Silty clay | 7.5 | 18.0 | 14.5 | 9.0 | 4.8 | 3.92 × 10−5 | | 31. Silt mixed with silty sand | 10.9 | 18.5 | 18.0 | 14.0 | 10.1 | 1.24 × 10−4 | | 32. Silty sand | 20 | 18.6 | 0.0 | 25.0 | 11.8 | 2.67 × 10−3 | | 41. Fine sand I | 30 | 18.6 | 0.0 | 32.3 | 15.4 | 5.28 × 10−3 | | 42. Fine sand II | 45 | 18.6 | 0.0 | 37.8 | 27.1 | 5.56 × 10−3 | | 43. Coarse sand with gravel | 46.8 | 19.6 | 0.0 | 40.0 | 33.1 | 4.23 × 10−2 | | 51. Intensively weathered mudstone | 52 | 20.6 | — | — | — | — |
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