Research Article
Multilevel Collapsibility of Loess under Irrigation in Jinya Town, Gansu Province, China
Table 1
Physical and mechanical properties of the three-level terraced loess in Jinjiaya village.
| Number of samples | Sample depth (m) | Water content (%) | Dry density (g/cm3) | Specific gravity (GS) | Porosity ratio (e) | Size composition (%) | Liquid limit (%) | Plastic limit (%) | Permeability coefficient (cm/s) | Collapsibility coefficient | Sand | Silt | Clay |
| 1 | 0.3 | 17.3 | 1.38 | 2.735 | 0.987 | 16.12 | 66.13 | 17.75 | 30.7 | 19.0 | 1.23E–4 | 0.134 | 2 | 0.9 | 17.4 | 1.33 | 2.845 | 1.141 | 25.28 | 66.03 | 8.69 | 30.6 | 19.2 | 1.22E–4 | 0.072 | 3 | 1.5 | 17.6 | 1.25 | 2.829 | 1.256 | 24.02 | 67.44 | 8.54 | 30.6 | 19.1 | 0.82E–4 | 0.131 | 4 | 2.1 | 17.2 | 1.38 | 2.751 | 0.997 | 24.96 | 66.80 | 8.24 | 30.4 | 19.1 | 1.47E–4 | 0.049 | 5 | 2.7 | 17.8 | 1.31 | 2.868 | 1.194 | 25.04 | 65.29 | 9.67 | 30.5 | 19.1 | 0.61E–4 | 0.083 | 6 | 3.3 | 17.8 | 1.29 | 2.837 | 1.198 | 27.44 | 64.35 | 8.21 | 30.3 | 19.2 | 1.18E–4 | 0.094 | 7 | 3.9 | 16.9 | 1.35 | 2.668 | 0.968 | 21.52 | 67.37 | 11.11 | 26.5 | 19.3 | 0.63E–4 | 0.077 | 8 | 4.5 | 10.0 | 1.45 | 2.944 | 1.030 | 24.24 | 65.30 | 10.46 | 30.5 | 19.2 | 0.62E–4 | 0.058 | 9 | 5.1 | 19.6 | 1.38 | 2.779 | 1.014 | 23.97 | 67.74 | 8.29 | 30.5 | 19.2 | 1.22E–4 | 0.077 |
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