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http://dx.doi.org/10.9720/kseg.2019.3.279

Relationship between Groundwater Level Changes and Aquifer Characteristics during Pumping at a Radial Collector Well  

Choi, Myoung-Rak (Department of Construction Safety and Disaster Prevention, Daejeon University)
Lee, Ho-Jeong (Department of Construction Safety and Disaster Prevention, Daejeon University)
Kim, Gyoo-Bum (Department of Construction Safety and Disaster Prevention, Daejeon University)
Publication Information
The Journal of Engineering Geology / v.29, no.3, 2019 , pp. 279-288 More about this Journal
Abstract
The groundwater drawdown at each monitoring well near a radial collector well along Anseong Stream, Korea, was measured and compared with the calculated drawdown using the mirror well concept. The drawdown calculation is performed by treating the collector well as a large vertical well in a homogeneous isotropic aquifer. The measured drawdown at each monitoring well is slightly different from the calculated value due to anisotropy in the hydraulic conductivity and aquifer thickness. The difference between the measured and calculated values at Well OW-7 is large, reaching approximately 48 cm, because a horizontal well is not installed along this direction. Sensitivity analysis of the hydraulic conductivity and aquifer thickness indicates that the hydraulic conductivity is more sensitive to groundwater level changes. Groundwater level changes become a concern when a radial collector well with a large pumping rate capacity is installed, which highlights the need to thoroughly investigate the aquifer characteristics in the surrounding area.
Keywords
radial collector well; groundwater level; hydraulic conductivity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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