DOI QR코드

DOI QR Code

제주도 성산유역의 담수와 염수 지하수 개발의 영향

Impacts of Fresh and Saline Groundwater Development in Sungsan Watershed, Jeju Island

  • 박남식 (동아대학교 토목공학과) ;
  • 고병련 (제주국제대학교 토목공학과) ;
  • 임영덕 (한국전력공사 개발본부 송변전개발처)
  • 투고 : 2013.02.09
  • 심사 : 2013.05.06
  • 발행 : 2013.07.31

초록

지하수 의존도가 높은 제주도에서는 담수 지하수는 물론 어류의 육상 양식을 위한 염분이 높은 지하수도 활발하게 개발되고 있다. 본 연구는 제주도 성산유역을 대상으로 담수와 염수 지하수 개발이 지하수계에 미치는 영향을 분석하였다. 경계면 모델을 이용하여 담수와 염수의 흐름을 모의하고 담수와 염수 개발의 영향을 조사하였다. 담수 개발은 기존의 연구 결과에서 익히 알려진 바와 같이 지하수위 강하와 해수쐐기 침투를 야기하는 것으로 나타났다. 염지하수 개발은 지하수위를 강하시키는 부정적 영향과 함께 해수침투를 저감시키는 긍정적 효과도 있는 것으로 나타났다. 담-염수사이의 유한한 두께의 천이대에 대한 수정 Ghyben-Herzberg 비율을 유도하고 해수침투 관측정에서 관측된 자료와 비교하였다.

Saline groundwater, in addition to fresh groundwater, is actively developed for inland aqua culture in Jeju Island where groundwater is practically the only source of freshwater. In this work we analyzed impacts of saline and fresh groundwater development on groundwater systems in Sungsan subwatershed in Jeju. A sharp-interface model was used to simulate fresh and saline groundwater flows. Withdrawal of freshwater imparted adverse impacts by lowering groundwater level and inducing saltwater encroachment. Withdrawal of saline water imparted mixed results: on one hand it lowered groundwater level, on the other hand it reduced saltwater encroachments. However, freshwater development lowered groundwater level much more than salinewater development did. Modified Ghyben-Herzberg ratio was developed for a transition zone with finite width. Comparison against observed data resulted in fair agreement.

키워드

참고문헌

  1. Aliewi, A.S., Mackay, R., Jayyousi, A., Nasereddin, K., Mushtaha, A., and Yaqubi, A. (2001). "Numerical simulation of the movement of saltwater under skimming and scavenger pumping in the pleistocene aquifer of gaza and jericho areas." Transport in Porous Media, Palestine, 43, pp. 195-212. https://doi.org/10.1023/A:1010698516886
  2. Asghar, M.N., Ahmad, S., Shafique, M.S., and Kahlown, M.A. (2001). Root zone salinity management using fractional skimming wells with pressurized irrigation. Inception Report, International Water Management Institue (IWMI) Pakistan Lahore. pp. 35.
  3. Bear, J. (1979). Hydraulics of Groundwater, McGrawHill.
  4. Boo, S.A., and Chung, G.C. (2000). "Saltwater intrusion into coastal aquifers of Eastern Jeju Region." Proceedings The Journal of Engineering Geology, pp. 77-84.
  5. Choi, H.M., Lee, J.Y., Ha, K.C., and Kim, G.P. (2011), "The Study on Time Series Analysis of Groundwater Data and Ground water Recharge in Jeju Island." The Journal of Engineering Geology, Vol. 21, No. 4, pp. 337-348. https://doi.org/10.9720/kseg.2011.21.4.337
  6. Coe, J.J. (1972). "Seawater intrusion extraction barrier." Journal of the Irrigation and Drainage Division, Vol. 98, No. 3, pp. 387-403.
  7. Huyakorn, P.S., Park, N.S., and Wu, Y.S. (1996). "Multiphase approach to the numerical solution of a sharp-interfaces saltwater intrusion problem." Water Resources Research, Vol. 32, No. 1, pp. 93-102. https://doi.org/10.1029/95WR02919
  8. Jeju (2004). Geology and volcanic activities in Eastern Jeju.
  9. Jeju and Kwater (2003). Comprehensive survey of hydrogeology and groundwater of Jeju (III).
  10. Jeju Peoples Daily (2012). "Water-resources exploitation caused by inefficient water supply system." November 20th
  11. Kang, D.H., Yang, S.I., Kim, T.Y., Park, H.J., and Kwon, B.H. (2008). "The Variation Characteristics of Groundwater Level with Distance from Shoreline in the Jeju Island." The Journal of Engineering Geology, Vol. 18, No. 2, pp. 157-166.
  12. KIGAM (2011). Assessment of sustainable quantity and development of functional water.
  13. Kim, G.B., Kim, J.W., Won, J.H., and Koh, G.W. (2007). "Regional Trend Analysis for Groundwater Quality in Jeju Island-Focusing on Chloride and Nitrate Concentrations-." Journal of Korea Water Resources Association, Vol. 40, No. 6, pp. 469-483. https://doi.org/10.3741/JKWRA.2007.40.6.469
  14. Kim, K.Y., Shim, B.O., Park, K.H., Kim, T.H., Seong, H.J., Park, Y.S., Koh, K.W., and Woo, N.C. (2005). "Analysis of Hydraulic Gradient at Coastal Aquifers in Eastern Part of Jeju Island." Econ, Environ. Geol. Vol. 38, No. 1, pp. 79-89.
  15. Kim, S.S., Kim, D.K., Son, P.W., Lee, C.H., and Ha, D.S. (2003). "Temporal and Spatial Variations of Water Quality of the Coastal Saline Groundwaters in Jeju Island." J of Aquaculture, Vol. 16, No. 1, pp. 15-23.
  16. Koh, B.R. (1998). A study on the model for prediction of groundwater quality and contamination, Yeungnam University, Ph.D. Dissertation, Dept. of Civil Engineering.
  17. Kumbhar, R.A., Samoon, H.A., and Ansari, A.K. (2003). "Control of groundwater pollution by scavenger wells." Second International Conference on Irrigation and Drainage (eds: Clemmens, A.J., and Anderson, S.S.), Phoenix, Arizona, pp. 12-15.
  18. Lee, B.C. (2012). Personal communication.
  19. Lee, B.J., Koo, M.H., Park, Y.S., Koh, G.W., and Park, K.H. (2006). "Hydraulic diffusivity and possibility of conduit-flow of groundwater in eastern part of Jeju island." Journal of the Geological Society of Korea, Vol. 43, No. 3, pp. 439-454.
  20. Lee, B.J., Moon, S.H., Kim, G.P., Kim, Y.C., Kim, Y.J., and Koh, K.W. (2008). "Development of a Groundwater Sampler and Test in a Well Affected by Seawater Intrusion."The Journal ofEngineering Geology, Vol. 18, No. 3, pp. 331-338.
  21. National Water Resources Authority (NWRA) (2000). Republic of yemen, summary report of the proceedings of the regional workshop on sustainable groundwater management in the middle east and North Africa
  22. Park, N.S., Park, J.Y., Mun, Y.R., and Kim, J.K. (2011a). "Cost Reduction for Small-Scale Desalination Plants." Journal of Korea Water Resources Association, Vol. 44, No. 10, pp. 809-817. https://doi.org/10.3741/JKWRA.2011.44.10.809
  23. Park, W.B., Kim, G.P., Lee, J.H., Moon, D.C., Kim, S.J., Koh, G.W., Pang, S.J., and Pang, I.C. (2011b). Variation of Groundwater Level and Recharge Volume in Jeju Island." Journal of the Environmental Sciences, Vol. 20, No. 7, pp. 857-872. https://doi.org/10.5322/JES.2011.20.7.857
  24. Shearer, T.R., Wagstaff, S.J., Calow, R., Stewart, J.A., Muir, J.F., Haylor, G.S., and Brooks, A.C. (1997). The potential for aquaculture using saline groundwater. BGS Technical Report WC/97/58.
  25. Sherif, M.M., and Hamza, K.I. (2001). "Mitigation of Seawater Intrusion by Pumping Brackish Water." Transport in Porous Media, Vol. 43, pp. 29-44. https://doi.org/10.1023/A:1010601208708
  26. Shi, L., Cui, L., Park, N., and Huyakorn, P.S. (2011) Applicability of a Sharp-Interface Model for Estimating Steady-State Salinity at Pumping Wells-Validation Against Sand Tank Experiments." Journal of Contaminant Hydrology, Vol. 124, pp. 35-42. https://doi.org/10.1016/j.jconhyd.2011.01.005

피인용 문헌

  1. A comprehensive sharp-interface simulation-optimization model for fresh and saline groundwater management in coastal areas vol.23, pp.6, 2015, https://doi.org/10.1007/s10040-015-1268-8
  2. Analysis of Water Level Fluctuations according to Groundwater Development and Pumping Duration vol.25, pp.1, 2016, https://doi.org/10.5322/JESI.2016.25.1.135
  3. Analysis of Spatiotemporal Changes in Groundwater Recharge and Baseflow using SWAT and BFlow Models vol.30, pp.5, 2014, https://doi.org/10.15681/KSWE.2014.30.5.549
  4. Sharp Interface Approach for Regional and Well Scale Modeling of Small Island Freshwater Lens: Tongatapu Island vol.10, pp.11, 2018, https://doi.org/10.3390/w10111636