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http://dx.doi.org/10.9720/kseg.2018.3.443

Applicability and Limitations of Groundwater Yield Estimation Equations for Radial Collector Wells  

Kim, Gyoo-Bum (Department of Construction Safety and Disaster Prevention, Daejeon University)
Lee, Ho-Jeong (Department of Construction Safety and Disaster Prevention, Daejeon University)
Choi, Myoung-Rak (Department of Construction Safety and Disaster Prevention, Daejeon University)
Publication Information
The Journal of Engineering Geology / v.28, no.3, 2018 , pp. 443-453 More about this Journal
Abstract
Radial collector wells have been widely used for large-capacity groundwater development in riparian environments, and many empirical equations have been developed for initial estimates of groundwater yield. We compare the initial yield estimates produced by several empirical equations for the radial collector well at the Anseongcheon stream site. The results of Babac's, Kordas', and Petrovic's methods are similar to the actual yield of $6,124m^3/d$, but Milojevic's method predicts a higher yield than the observed value. The conditions under which these methods are applicable explain the observed differences between the actual and estimated yields. The applicability of empirical equations is evaluated by changing the input variables of distance from well to river, number of horizontal wells, thickness of aquifer, length of horizontal well, and hydraulic conductivity. The results indicate that the conditions under which each method is applicable must be considered carefully when estimating groundwater yield, and hydraulic conductivity must be estimated accurately.
Keywords
riverbank filtration; radial collector well; yield estimation; hydraulic conductivity;
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