한국수자원학회논문집 (Journal of Korea Water Resources Association)

  • 제46권1호
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  • Pages.87-97
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  • 2013
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  • 2799-8746(pISSN)
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  • 2799-8754(eISSN)
한국수자원학회 (Korea Water Resources Association)
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부유사 및 하상토 입도분포를 고려한 저수지 퇴사의 장기모의

Long-Term Simulation of Reservoir Sedimentation Considering Particle-Size Distributions of Suspended Sediment and Bed Materials

  • 김대근 (목포대학교 공과대학 토목공학과) ;
  • 신광균 ((주)삼안 수력사업본부)
  • 투고 : 2012.07.27
  • 심사 : 2012.09.27
  • 발행 : 2013.01.31
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초록

본 연구에서는 HEC-RAS의 하상변동모형을 이용하여 고농도의 유사가 중소규모의 저수지에 유입하여 삼각주를 형성하는 과정을 유사의 입도분포를 고려하여 해석하였으며, 다음과 같은 결론을 얻을 수 있었다. 먼저, 삼각주의 시공간적인 분포와 년간 저수지에 퇴적되는 입도별 퇴사량을 합리적으로 예측할 수 있었다. 또한 저수지의 특정위치에서 특정시기에 어떤 입도의 유사가 주로 퇴적되는지를 합리적으로 예측할 수 있었다. 이러한 유사의 입도분포를 고려한 모의와 분석은 수자원관련 시설물의 계획 및 유지관리에 필요한 유용한 정보를 제공해 줄 수 있을 것으로 판단된다.

The bed change model of HEC-RAS was used to predict the formation of a delta upon an influx of high-density sediment while taking the particle-size distributions of the suspended sediment and bed materials into account. The model was able to reasonably predict both the spatial-temporal distribution of the delta and the amount of deposited sediment according to the grain size. In addition, it was able to estimate the main type of grains that sediment at particular locations at particular times moderately well. It is expected that the simulation and the analysis considering these particle-size distributions of sediment will provide important information on planning and maintenance of the water resource related facilities.

키워드

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피인용 문헌

  1. Analysis of the Effect of Dredging and Weirs on Bed Change in the Nakdong River and its Tributary using HEC-6 vol.48, pp.9, 2015, https://doi.org/10.3741/JKWRA.2015.48.9.743
  2. Simulation of Long-term Reservoir Sedimentation and Flushing vol.14, pp.4, 2014, https://doi.org/10.9798/KOSHAM.2014.14.4.333
  3. Scaled-Down Experiments and Numerical Simulations for the Design of a Retention Tank with Rotatable Bucket vol.144, pp.9, 2018, https://doi.org/10.1061/(ASCE)EE.1943-7870.0001436