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Estimation of optimal pumping rate, well efficiency and radius of influence using step-drawdown tests  

Choi, Hyun-Mi (Department of Geology, Kangwon National University)
Lee, Jin-Yong (Department of Geology, Kangwon National University)
Cheon, Jeong-Yong (Department of Geology, Kangwon National University)
Jun, Seong-Chun (GeoGreen21 Co., Ltd.)
Kwon, Hyung-Pyo (GeoGreen21 Co., Ltd.)
Publication Information
The Journal of Engineering Geology / v.20, no.2, 2010 , pp. 127-136 More about this Journal
Abstract
Optimal pumping rate, well efficiency and radius of influence were estimated using field step-drawdown tests. According to the analysis results, optimal pumping rates were estimated as 9.37, 16.20 $m^3/day$ for KDPW 1 and 8.11, 14.10 $m^3/day$ for KDPW 2. The well efficiency was calculated as 72.02~90.73% for KDPW 1 while it was 70.62~88.52% for KDPW 2. In the meanwhile, the steady-state analysis yielded the radius of influence (ROI) of 3.50~31.92 m in case of pumping at KDPW 1 and the ROI of 0.14~37.43 m in case of pumping at KDPW 2. In addition, the transient analysis produced the ROI of 0.02~8.34 m for KDPW 1 pumping and the ROI of 0.24~9.68 m for KDPW 2 pumping. The methodology used in this study can be usefully applied in the pump and treat remediation design for contaminated groundwater.
Keywords
step-drawdown test; optimal pumping rate; well efficiency; radius of influence; pump and treat;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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