Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Development of Relational Formula between Groundwater Pumping Rate and Streamflow Depletion

지하수 양수량과 하천수 감소량간 상관관계식 개발

  • Kim, Nam Won (Water Resources Research Division, Water Resources & Environment Research Department, Korea Institute of Construction Technology) ;
  • Lee, Jeongwoo (Water Resources Research Division, Water Resources & Environment Research Department, Korea Institute of Construction Technology) ;
  • Lee, Jung Eun (Water Resources Research Division, Water Resources & Environment Research Department, Korea Institute of Construction Technology) ;
  • Won, You Seung (Yeongsan River Flood Control Office)
  • 김남원 (한국건설기술연구원 수자원연구실) ;
  • 이정우 (한국건설기술연구원 수자원연구실) ;
  • 이정은 (한국건설기술연구원 수자원연구실) ;
  • 원유승 (영산강홍수통제소 예보통제과)
  • Received : 2012.06.26
  • Accepted : 2012.08.21
  • Published : 2012.12.31
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Abstract

The objective of this study is to develop the relational formula to estimate the streamflow depletion due to groundwater pumping near stream, which has been statistically derived by using the simulated data. The integrated surface water and groundwater model, SWAT-MODFLOW was applied to the Sinduncheon and Juksancheon watersheds to obtain the streamflow depletion data under various pumping conditions. Through the multiple regression analyses for the simulated streamflow depletion data, the relational formula between the streamflow depletion rate and various factors such as pumping rate, distance between well and stream, hydraulic properties in/near stream, amount of rainfall was obtained. The derived relational formula is easy to apply for assessing the effects of groundwater pumping on near stream, and is expected to be a tool for estimate the streamflow contribution to the pumped water.

본 연구에서는 지하수 양수에 따른 하천수 감소량을 예측할 수 있는 상관관계식을 지표수-지하수 통합모의 결과를 이용하여 유도하였다. 신둔천과 죽산천 두 개의 시험유역에 대해 지표수-지하수 통합모형 SWAT-MODFLOW을 적용하여 다양한 양수조건에 따른 하천수 감소량 자료를 모의 생성하였으며, 생성된 자료를 바탕으로 다중회귀분석을 실시하여 지하수 양수량, 하천과 양수정 이격거리, 대수층 및 하천바닥의 수리특성, 강수량 등의 함수인 하천수 감소량 산정 식을 유도, 제시하였다. 개발된 상관관계식은 하천인근 지하수 양수에 따른 하천수 영향을 평가하는데 간편하게 적용될 수 있으며, 지하수 양수량 중 하천수에 해당하는 부분인 하천수 기여도를 산정하는데 활용될 수 있을 것으로 기대된다.

Keywords

References

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