KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of Chungju Dam Operation for Flood Control in the Upper Han River

충주댐 방류에 따른 댐 상하류 홍수위 영향 분석

  • 김상호 (상지대학교 건설시스템공학과) ;
  • 김지성 (한국건설기술연구원 하천해안연구실)
  • Received : 2012.10.08
  • Accepted : 2013.01.02
  • Published : 2013.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, the hydraulic channel routing model was constructed to analysis the effect of flood control with the operation of Chungju Dam for 2006 flood. Study area was divided with up- and downstream of Chungju Dam in the upper Han River of Paldang Dam. The model was calibrated and verified for the flood event of 1995-2008. The effects of flood control of Chungju Dam were compared with the simulation results without the dam, and the rising effects of stage in the main observation stations were analyzed by the variation of released dam discharge. Consequently, the operation of Chungju Dam for 2006 flood was performed properly, but the effects of flood control of Chungju Dam were so focused in downstream of the dam that institutional complement was demanded to reduce the flood damage in the upper region of the dam. The limit of decision rule of downstream stage in the backwater region of dam was analyzed to solve the problem, and the decision rule of downstream stage was proposed to consider the discontinuity between the backwater region of dam and the design flood of upper stream. The proposed rule will be used to design the reduction of flood damage in upper stream of dam and to apply the analysis of region for flood damage.

본 연구에서는 2006년 홍수시 충주댐 운영에 따른 댐 상 하류의 홍수위 상승영향을 정량적으로 분석하기 위하여 팔당댐 상류의 한강 본류에 위치한 충주댐을 기준으로 상류구간과 하류구간으로 구분하고, 1995년부터 2008년까지의 홍수사상을 대상으로 모형을 검보정함으로써 수리학적 모형을 구축하였다. 구축된 모형을 이용하여 충주댐의 유무를 가정하여 충주댐의 홍수조절효과를 검토하고, 방류량의 변화에 따른 상 하류 주요지점의 수위 상승영향을 정량적으로 분석하였다. 분석결과, 2006년 홍수시 충주댐의 운영이 비교적 적절하게 수행되었음을 확인하였으나, 충주댐의 홍수조절효과는 댐 하류구간에 집중되어 있어 댐 상류 홍수피해 저감을 위한 제도적 보완이 필요한 것으로 분석되었다. 이러한 문제점을 해결하기 위하여 기존 댐 배수구간 상류 하천의 기점수위 결정방법의 한계를 검토하였으며, 댐 배수구간과 상류 하천의 계획홍수량 불연속을 반영할 수 있는 기점수위 결정방법을 제안하였다. 제안된 방법은 댐 상류하천의 홍수피해 저감을 위한 설계 및 홍수피해 발생시 피해원인 분석에 활용될 수 있을 것이다.

Keywords

References

  1. Choi, K.H., Park, S.G. and Kim, Y.S. (2006) Concentrated heavy rain in the middle part of the Korean peninsula in July 2006 and flood forecasting. Water for Future, KWRA, Vol. 39, No. 8, pp. 31-37 (in Korean).
  2. Chungcheongbuk-do (1991) The Han River Maintenance General planning Report. Korea (in Korean).
  3. Fread, D.L. (1978) National Weather Service Operational Dynamic Wave Model, National Weather Sevice, Silver Springs, MD.
  4. Kim, S.H. and Kim., W. (2002) Establishment of hydraulic model for flow analysis of the lower Han river. Journal of Korea Water Resources Association, KWRA, Vol. 35, No. 5, pp. 485-500 (in Korean). https://doi.org/10.3741/JKWRA.2002.35.5.485
  5. KMLTM (2009) River Design Guideline. Korean Ministry of Land, Transport and Maritime Affairs (KMLTM), Korea (in Korean).
  6. KMLTM (2009) Dam Design Guideline. Korean Ministry of Land, Transport and Maritime Affairs (KMLTM), Korea (in Korean).
  7. KMOCT (1992) The Han River Maintenance General planning Report. Korean Ministry of Construction and Transportation (KMOCT), Korea (in Korean).
  8. Lee, H.R., Han, K.Y., Kim, S.H. and Choi, H.S. (1998a) Numerical model for flood inundation analysis in a river (I): GIS application. Journal of Korea Water Resources Association, KWRA, Vol. 31, No. 4, pp. 415-427 (in Korean).
  9. Lee, H.R., Han, K.Y. and Kim, S.H. (1998b) Numerical model for flood inundation analysis in a river (II): Uncertainty analysis. Journal of Korea Water Resources Association, KWRA, Vol. 31, No. 4, pp. 429-437 (in Korean).
  10. Lee, J.H., Lee, K.S. and Jeong, D.K. (1992) An optimal operation of multi-reservoirs for flood control by incremental DP. Journal of Korea Water Resources Association, KWRA, Vol. 25, No. 2, pp. 47-59 (in Korean).
  11. Lee, K.S. and Chung, D. (1985) A comparison study of reservoir operations for flood control of the Chungju dam. Journal of Korea Water Resources Association, KWRA, Vol. 18, No. 3, pp. 225-233 (in Korean).
  12. Lee, K.S. and Jun, K.S. (1986) Simulation for the optimal operation of Soyanggang dam and Hwachon dam in the flood periods. Journal of Korean Society of Civil Engineering, KSCE, Vol. 6, No. 1, pp. 13-24 (in Korean).
  13. Shim, J.H., Kim, J.T., Cho, W. and Kim, J.Y. (2004) Multipurpose dam operation models for flood control using Fuzzy control technique (III) - Multi reservoir operation methods -. Journal of Korean Society of Hazard Mitigation, Vol. 4, No. 3. pp. 61-72 (in Korean).
  14. Shin, Y.L., Maeng, S.J., Ko, I.H. and Lee, H.K. (2002) Development of reservoir operation model using simulation technique in flood season(II). Journal of Korea Water Resources Association, KWRA, Vol. 35, No. 6, pp. 797-805 (in Korean). https://doi.org/10.3741/JKWRA.2002.35.6.797

Cited by

  1. Assessing the Effect of Upstream Dam Outflows and River Water Uses on the Inflows to the Paldang Dam vol.47, pp.11, 2014, https://doi.org/10.3741/JKWRA.2014.47.11.1017
  2. Flow Resistance Analysis for Lower Naesung Stream Considering Grain and Bedform Roughness vol.46, pp.12, 2013, https://doi.org/10.3741/JKWRA.2013.46.12.1209
  3. Real-time Flood Stage Forecasting of Tributary Junctions in Namhan River vol.47, pp.6, 2014, https://doi.org/10.3741/JKWRA.2014.47.6.561