| Title |
Analysis of Stream Depletion Rate by Groundwater Abstraction in Leaky Aquifer |
| Authors |
이정우(Lee, Jeongwoo) ; 정일문(Chung, Il-Moon) ; 김남원(Kim, Nam Won) |
| DOI |
https://doi.org/10.12652/Ksce.2017.37.6.1001 |
| Keywords |
하천수 감소율;지하수 양수;누수대수층;Zlotnik and Tartakovsky 해석해;Hunt 해석해 Stream depletion rate;Groundwater pumping;Leaky aquifer;Zlotnik and Tartakovsky's analytical solution;Hunt's analytical solution |
| Abstract |
This study was to evaluate the stream depletion rate from groundwater pumping with varying stream-well distance, aquifer transmissivity, storage coefficient, leakage coefficient, streambed hydraulic conductance using the Zlotnik and Tartakovsky analytical solution which considers a two-layer leaky aquifer-stream-well system. For the hydraulic conditions applied in this study, the streambed hydraulic conductance and the aquitard leakage coefficient were assessed to have a dominant influence on the stream depletion rate. In order to evaluate the applicability of Zlotnik and Tartakovsky analytical solution ignoring the change in the drawdown in the lower aquifer and applying the fixed head boundary condition, the solution was compared with Hunt analytical solution derived from the more practical conditions simultaneously taking into account the drawdown changes in the upper and lower aquifers. As a result, the Zlotnik and Tartakovsky analytical solution is suitable for predicting short-term effects of less than one year in the pumping period, and when the stream depletion factor (SDF) is greater than 2,500 days, or when the product of the leakage coefficient and the stream-well distance is less than 10 cm/s. |