한국지하수토양환경학회지:지하수토양환경 (Journal of Soil and Groundwater Environment)

  • 제10권3호
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  • Pages.24-31
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  • 2005
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  • 1598-6438(pISSN)
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  • 2287-8831(eISSN)
한국지하수토양환경학회 (Korean Society of Soil and Groundwater Environment)
권호 표지

불균질 대수층에서 유선 시뮬레이션을 이용한 다수 오염원의 용질 이동 모사

Solute Transport Modeling using Streamline Simulation in a Heterogeneous Aquifer with Multiple Contaminant Sources

  • 정승필 (서울대학교 지구환경시스템공학부) ;
  • 최종근 (서울대학교 지구환경시스템공학부)
  • Jung Seung-Pil (School of Civil, Urban & Geosystem Eng., Seoul National University) ;
  • Choe Jong-Geun (School of Civil, Urban & Geosystem Eng., Seoul National University)
  • 발행 : 2005.06.01
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초록

2차원 불균질 대수층에서 다수의 오염원이 있음 경우 오염물의 거동을 모사할 수 있는 방법을 제시하였다. 이 방법은 유선 시뮬레이션을 기반으로 하며 다차원의 계산을 다수의 일차원으로 분해하여 계산하는 방법으로서 불균질한 매질에서 수두 계산을 한 후, 관심영역에 유선을 분포시키고 그 유선을 띠라 오염물이 전파되는 농도를 계산한다. 개발된 모델을 Visual MODFLOW를 이용하여 검증하였고 시간에 따른 농도 분포나 관측정에서의 용질 도달 곡선이 잘 일치함을 확인할 수 있었다. 개발된 모델은 시뮬레이션 수행 시간에 대한 효율 면에서 Visual MODFLOW보다 뛰어나 많은 연산을 필요로 하는 대규모 대수층의 용질거동 예측이나 반복 계산을 필요로 하는 역산 모델링에서 효과적으로 사용될 수 있다.

This study presents a contaminant transport model suitable for a 2-dimensional heterogeneous aquifer with multiple contaminant sources. It uses a streamline simulation, which transforms a multi-dimensional problem into multiple 1dimensional problems. It runs flow simulation, streamline tracking, and calculation of contaminant concentrations by turns. The model is verificated with a Visual MODFLOW by comparing contaminant concentration distributions and breakthrough curves at an observation well. Due to its fast simulation, it can be applied to time consuming simulations such as in a fine-grided aquifer, an inverse modeling and other applications.

키워드

참고문헌

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