한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제47권5호
  • /
  • Pages.3-13
  • /
  • 2005
  • /
  • 1738-3692(pISSN)
  • /
  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
권호 표지
DOI QR코드

DOI QR Code

3D-FEMWATER 모델을 이용한 대창지역의 해수침투 범위추정

Estimation of Seawater Intrusion Range in the Daechang Area Using 3D-FEMWATER Model

  • 발행 : 2005.09.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The present study examined the 3 dimensional space distribution characteristics of sea water intrusion using data available from previous observations. For this study, we used 3D FEMWATER, which is a 3 dimensional finite element model. The target area was around Daechang-ri, Gimje-si, Jeollabuk-do. The area is relatively easy to formulate a conceptual model and has observation wells in operation for surveying sea water intrusion. Considering the uncertainty of numerical simulation, we analyzed sensitivity to hydraulic conductivity, which has a relatively higher effect. According to the result of the analysis, the variation of TDS concentration had an error range of $-1,336{\~}+107 mg/{\iota}$. Taking note that the survey data from observation wells were collected when the boundary between fresh water and sea water in the aquifer was in equilibrium, we set the range of time for numerical simulation and estimated the spatial distribution of TDS concentration as the range of sea water intrusion. According to the result of estimation, the spatial distribution of TDS concentration calculated when 1,440 days were simulated was taken as the range of sea water intrusion. Using the result of calculation, we can draw not only vertical views for a certain section but also horizontal views of different depth. These views will be greatly helpful in understanding the spatial distribution of the range of sea water intrusion. In addition, the result of this study can be used rationally in proposing an optimal quantity of water pumping through investigating the moving route of sea water intrusion over time in order to prevent excessive water pumping and to maintain an optimal number of water pumping wells per interval.

키워드

참고문헌

  1. Bear. J. 1979. 'Hydraulics of Groundwater', McGraw-Hill, New York, p.567
  2. Choi, S. H., Kim, Y. K 1989. 'Geochemical characteristics of groundwater in Cheju island' (in Korean), Jour. Geol. Soc. Korea, 25 (3), pp.230-238
  3. Choi, S. H., Kim, Y. K, Lee, D. Y. 1991. 'Sea water intrusion in the coastal area of Cheju volcanic island' (in Korean), Jour. Korean lnst. Mining Geol, 24(3), pp.319-327
  4. CRC, 1965. 'Handbook of Chemistry and Physics, 46th Edition', CRC Press, Boca Raton, Florida
  5. Dean, T.J., J.P. Bell and A.J.B. Baty. 1989. 'Soil moisture measurement by an improved capacitance technique, Part I Sensor design and performance', J. of Hydrology, pp.67-78
  6. E.P.A. 1992. '3DFEMWATERI 3DLEWASTE: Numerical codes for delineating wellhead protection areas in agricultural regions based on the assim ilative capacity criterion', EPA 600, R-92, p.223
  7. Freeze, R.A and Cherry, J.A. 1979. 'Ground water' Prentice-Hall, p.375
  8. Ghyben, B.W. 1889, 'Nota in verband met devoorgenomen put boring nabij Amsterdam', K. lnst. lng. tijdschr., The Hague, 21
  9. Herzberg, A 1901. 'Die Wasserversorgung einiger Nordsee Bader', J. G asbeleucht. Verw. Beleuchtungsarten Wasservesorg, v.44., pp.815-819
  10. Huyakorn, P.S., Wu, U.S., and Park, N.S. 1996. 'Multiphase approach to the numerical solution of a sharp interface saltwater intrusion problem', Water Resources Research, 32(1), pp.93-102 https://doi.org/10.1029/95WR02919
  11. Jeen S.W, Kim, J.M., Ko, K.S., Y, B.W., Chang, H.W. 2001. 'Hydrogeoche-mical characteristics of groundwater in a midwestern coastal aquifer system' (in Korean), Geosciences Journal, V.5, n.4, pp.339-348 https://doi.org/10.1007/BF02912705
  12. KARICO, 2002. 'Report on 2002 Seawater intrusion' (in Korean)
  13. KARICO, 2004. 'Report on 2004 Seawater intrusion' (in Korean)
  14. Kim, C. S., K. S. Kim, D. S. Bae, and S. H. Song. 1997. 'Hydrogeological Characteristics of Seawater Intrusion in the Coastal Area' (in korean), Journal of the Korea society of groundwater environment Vol.4., No.2, pp.61-72
  15. KORES, 2000. 'Report on groundwater at Haenam, Korea' (in korean), p.538
  16. KOWACO, 1998. 'Report on groundwater at Youngsan Sumjin river, Korea' (in Korean), GW-98-4a
  17. Lee, S. B., K. Y. Kim, S. R. Han, and J. S. Han. 1997. 'The study on the increased causes of chloride (Cl-) concentration of the Samyang 3rd pumping station in Cheiu island' (in Korean), Journal of the Korea society of groundwater environment Vol.4., No.2, pp.84-94
  18. Mercer, J.W., S.D. Thomas, and B. Ross. 1982. 'Parameters and Variables Appearing in Repository Siting Models', NUREG/CR 3066', U.S. Nuclear Regulatory Commission, Washington. D.C
  19. Mills W.B., Bowie, G.L., Porcella, D.E., Campbell, C.L, Pagenkopf, J.R., Rupp, G.L., Johnson, K.M., Chan, P.W.H., Gherini, S.A and C.E. Chamberlin, 1985. 'Water quality assessment: A Screening procedure for toxic and conventional pollutants in surface and ground water Part II', U.S. Environmental Protection Agency, Athens, GA
  20. Oude Essink, G.H.P. and Boekelman, R. H. 1996. 'Problems with large-scale molelling of salt water intrusion in 3D', 14th salt water intrusion meeting, Malmo
  21. Park, S. C., S. T. Yun, G. T. Chae, and S. K. Lee. 2002. 'Hydrogeochemistry of shallow groundwaters in western coastal area of Korea: A study on seawater mixing in coastal aquifers' (in korean), Journal of the Korea society of groundwater environment, Vol.7, No.1, pp.63-77
  22. Park, N. S., and Y. D. Lee. 1997. 'Seawater intrusion due to groundwater developments in eastern and central Cheju watersheds' (in Korean), Journal of the Korea society of groundwater environment, Vol.4, No.1, pp.5-13
  23. Shim, B. O., S. Y. Chung, and M. H. Lee. 2002b. 'The study of seawater intrusion range by the Southeastern Area of Busan, Korea' (in Korean), Proceeding of the Korea society of groundwater environment, pp.143-147
  24. Shim, B. O., S. Y. Chung., H. J. Kim., and I. H. Sung. 2002a. 'Change of seawater intrusion range by the difference of longitudinal dispersivity in hydrodynamic model' (in Korean), Journal of the Korea society of groundwater environment, Vol. 7, No.4, pp.59-67
  25. Shim, B. O., S. Y. Chung., H. J. Kim., and I. H. Sung., B. W. Kim. 2002c. 'Characteristics of seawater intrusion using geostatistical analysis of geophysical surveys at the southeastern coastal area of Busan, Korea' (in Korean), Journal of the Korea society of groundwater environment VoI.7., No.3, pp.317
  26. Todd D.K. 1976. 'Groundwater hydrology 2nd edition'. John Wiley & Sons