Research Article
The Permeable Character of CSG Dams and Their Seepage Fields
Table 1
The inversion results according to various water-level characteristics.
| | Date | Measuring point | Water-head (m) | Error (m) | Permeability coefficient (cm/s) | Water-level characteristic | | Calculated value | Measured value | Normal CSG | Abnormal CSG |
| | 2015-6-27 | P1–5 | 1402.15 | 1401.98 | 0.17 | 1.00 × 10−3 | 1.18 × 10−5 | Highest water-level difference between upstream and downstream in 2015 | | P1–6 | 1399.16 | 1399.45 | −0.29 | | P1–7 | 1397.37 | 1397.89 | −0.52 |
| | 2015-8-23 | P1–5 | 1414.71 | 1414.59 | 0.12 | 6.18 × 10−3 | 8.97 × 10−5 | Highest upstream water level in 2015 | | P1–6 | 1412.55 | 1412.88 | −0.33 | | P1–7 | 1410.40 | 1410.87 | −0.47 |
| | 2016-2-15 | P1–5 | 1400.98 | 1401.35 | −0.37 | 2.98 × 10−3 | 7.74 × 10−5 | Lowest water level | | P1–6 | 1398.42 | 1397.83 | 0.59 | | P1–7 | 1397.32 | 1396.64 | 0.68 |
| | 2016-7-1 | P1–5 | 1401.55 | 1401.45 | 0.1 | 6.35 × 10−3 | 6.73 × 10−5 | Highest water-level difference between upstream and downstream in 2016 | | P1–6 | 1398.83 | 1398.92 | −0.09 | | P1–7 | 1397.34 | 1397.43 | −0.09 |
| | 2016-7-16 | P1–5 | 1418.95 | 1418.48 | 0.47 | 9.96 × 10−3 | 9.78 × 10−5 | Highest upstream water level in 2016 | | P1–6 | 1417.64 | 1418.25 | −0.61 | | P1–7 | 1415.93 | 1416.02 | −0.09 |
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