• Improvement of Well Efficiency through Well Development in a Pumping Well
  • Kim, Gyoo-Bum;Kim, Byung-Woo;Kim, Sung-Yun;
  • K-water Institute, Korea Water Resources Corporation;K-water Institute, Korea Water Resources Corporation;K-water Institute, Korea Water Resources Corporation;
  • 충적층 양수정에서 우물개량을 통한 우물효율의 개선
  • 김규범;김병우;김성윤;
  • 한국수자원공사 K-water연구원 지질지하수연구팀;한국수자원공사 K-water연구원 지질지하수연구팀;한국수자원공사 K-water연구원 지질지하수연구팀;
Abstract
Drilling at unconsolidated layer can make the aquifer disturbed and reduce a productivity of groundwater well. Surge block and air surging were applied to a pumping well located in Jeungsan-ri, Changnyung-gun, to improve a well efficiency by removing clogging and fine-grained slime. Two experimental log-linear equations, $y_1=-0.1769\;ln(x_1)+0.4960$ and $y_2=-84.3358\;ln(x_2)+512.8162$, were proposed in this site, in which $x_1$ and $x_2$ are the number of surging event, $y_1$ is the amount of slime, and $y_2$ is a recovery time of groundwater level after air surging. Well loss exponent (P) decreased after surging, from 3.422 to 1.439, and the groundwater inflow from aquifer happened in all directions around a well with gradually increasing the homogeneity in a local aquifer's hydraulic property. It was revealed that long-term well development should be done in the pumping well which is located in unconsolidated sediments to increase a well productivity.

Keywords: Well development;Well efficiency;Clogging;Slime;Unconsolidated layer;

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This Article

  • 2010; 15(1): 39-49

    Published on Feb 28, 2010

  • Received on Oct 20, 2009
  • Revised on Oct 21, 2009
  • Accepted on Nov 23, 2009