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2025 Vol.41, Issue 5 Preview Page
Analysis of Various Water Level Fluctuations for Achieving Long-Term Stability of River Levees

다양한 수위 변화에 대한 하천제방의 장기적인 안정성 분석

Jae-Hong Kim1
,
Geon Nam2
,
Beop-Jung Kim3
,
Tae-Wan Kim4*
김 재홍1
,
남 건2
,
김 법정3
,
김 태완4*
1Member, Associate Prof., Dept. of Civil and Environmental Engineering, Dongshin Univ.
2Member, Director of Regional Development, Gwangyang Bay Area Free Economic Zone Authority (GFEZ)
3Member, Graduate Student, Dept. of Civil and Environmental Engineering, Dongshin Univ.
4Member, Graduate Student, Dept. of Civil and Environmental Engineering, Dongshin Univ.
1정회원, 동신대학교 토목환경공학과 부교수
2정회원, 광양만경제자유구역청 지역개발국장
3정회원, 동신대학교 토목환경공학과 박사과정
4정회원, 동신대학교 토목환경공학과 박사과정
*Corresponding Author
31 October 2025. pp. 121-130
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Abstract

Maintaining and reinforcing river levees to respond to extreme rainfall caused by climate change remains a persistent engineering challenge. To advance these technologies, analyses of flood defense structures, such as reservoirs and river levees, should be conducted by considering various failure modes. This study analyzes the behavioral characteristics of a river levee in Dasi-myeon, Naju-si, Jeollanam-do, which actually collapsed because of rapid drawdown of the water levels. The changes in the factor of safety over time were evaluated by analyzing the unsaturated seepage and slope stability under extreme water level variations, such as overtopping of the levee and rapid drawdown of flood-level water. In most river levee failures in Korea, reinforcements were primarily designed as a preventive measure to avoid recurrence, whereas long-term stability was not sufficiently considered. To achieve long-term stability of levees, implementing supplementary measures to address various rainfall-induced slope instability and additional reinforcements that can effectively block seepage into the levee body is essential.

Keywords
Drawdown
Infiltration
Long-term stability
Overflow
River levee

기후변화로 인한 극한강우에 대응하기 위하여 하천제방의 유지관리 및 보강공법은 지속적인 공학적 문제이다. 이러한 기술의 고도화를 위하여 저수지 및 하천제방과 같은 시설물을 대상으로 다양한 파괴유형을 고려한 해석이 수행되어야 한다. 본 연구에서는 실제 수위급강하(Drawdown)로 인해 붕괴가 발생한 전라남도 나주시 다시면의 하천제방을 대상으로 수위 변화에 따른 제체의 거동 특성을 분석하였다. 제방의 월류 및 홍수위에서의 수위급강하와 같은 극한 수위 변화를 대상으로 불포화 침투해석과 사면안정해석을 연계하여 시간에 따른 안전율 변화를 분석하였다. 국내 대부분 하천제방 현장 붕괴에 대한 조치는 재발생의 예방 차원에서 보강 설계가 주로 수행되며, 장기적인 안정성은 충분히 고려되지 않고 있다. 장기적인 제체 안정성을 확보하기 위해서는 비탈면에서 발생하는 여러 문제에 대한 보완뿐만 아니라 제체 내부로의 침투수를 효과적으로 차단할 수 있는 추가적인 보강대책이 함께 적용되어야 할 것이다.

References
1

Fenton, G. A. and Griffiths, D. V. (1997), “Extreme Hydraulic Gradient Statistics in Stochastic Earth Dam”, Journal of Geotechnical and Geoenvironmental Engineering, Vol.123, No.11, pp.995-1000, https://doi.org/10.1061/(ASCE)1090-0241(1997)123:11(995).

10.1061/(ASCE)1090-0241(1997)123:11(995)
2

GeoStudio (2022), User manual of SEEP/W and SLOPE/W, Calgary, Canada, https://www.seequent.com/.

3

Griffiths, D. V. and Fenton, G. A. (1998), “Probabilistic Analysis of Exit Gradients due to Steady Seepage”, Journal of Geotechnical and Geoenvironmental Engineering, Vol.124, No.9, pp.789-797, https://doi.org/10.1061/(ASCE)1090-0241(1998)124:9(789).

10.1061/(ASCE)1090-0241(1998)124:9(789)
4

Jeollanam-do Regional Planning Division (2018), Field report on pavement cracks caused by shear activity during the construction of Yeongsangang Riverside Road(Section 1)[Report], Jeollanam-do.

5

Kim, J. H., Kim, Y. M., and Satyanaga, A. (2023), “Instability of Embankment Slopes Due to Overflow and Drawdown”, Water, 15(19), 3402, MDPI, pp.1-14, https://doi.org/10.3390/w15193402.

10.3390/w15193402
6

Kim, J. M., Kim, J. S., Oh, E. Ho., and Cho, W. B. (2014), “Numerical Analysis of Hydrograph Determination for Cohesive Soil Levee”, Journal of the Korean Geotechnical Society, Vol.30, No.4, pp.81-92, https://doi.org/10.7843/kgs.2014.30.4.81.

10.7843/kgs.2014.30.4.81
7

Kim, J. Y., Kim, T. H., Kim, Y. S., and Kim, J. H. (2015), “Stability Analysis of Embankment Overtopping by Initial Fluctuating Water Level”, Journal of the Korean Geotechnical Society, Vol.31, No.8, pp.51-62, http://dx.doi.org/10.7843/kgs.2015.31.8.51.

10.7843/kgs.2015.31.8.51
8

Lee, K. I., Park, S. B., and Choi, M. J. (2021), “Evaluation of Field Applicability of Slope of Improved Soil for Ground Stabilizer”, Journal of the Korean Geosynthetics Society, Vol.20, No.1, pp.35-44, https://doi.org/10.12814/jkgss.2021.20.1.035.

10.12814/jkgss.2021.20.1.035
9

Nam, G. (2024), “Slope Stability Analysis and Reinforcement Method for the River Embankment with Water Level Variations”, Ph.D. dissertation, Department of Civil Engineering Graduate School, Dongshin University, https://www.riss.kr/link?id=T16952350.

10

Sharafati, A., Yaseen, Z. M., and Pezeshki, E. (2020), “Strategic Assessment of Dam Overtopping Reliability Using a Stochastic Process Approach”, Journal of Hydrologic Engineering, Vol.25, No.7, 04020029, https://doi.org/10.1061/(ASCE)HE.1943-5584.0001938.

10.1061/(ASCE)HE.1943-5584.0001938
Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 41
  • No :5
  • Pages :121-130
  • Received Date : 2025-08-13
  • Revised Date : 2025-08-28
  • Accepted Date : 2025-08-29
  • DOI :https://doi.org/10.7843/kgs.2025.41.5.121
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