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韓國水資源學會論文集 = Journal of Korea Water Resources Association v.43 no.6, 2010년, pp.543 - 557   피인용횟수: 12
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낙동강하구둑 상류 접근수로에서의 유사량 공식 및 유사 이송형태에 따른 하상변동 수치모의에 관한 연구
Numerical Analysis for Bed Changes due to Sediment Transport Capacity Formulas and Sediment Transport Modes at the Upstream Approached Channel of the Nakdong River Estuary Barrage

지운    (명지대학교 토목환경공학과   ); 여운광    (명지대학교 토목환경공학과   ); 한승원    (명지대학교 토목환경공학과 대학원  );
  • 초록

    본 논문에서는 2차원 하상변동 수치모형인 CCHE2D 모형을이용하여 유사량 공식과 유사이송형태별 이류-확산 방정식의 선택이 하상변동 수치모의결과 값에 미치는 영향을 분석하고 실제 현장자료와 비교하였다. 또한 이러한 분석을 기초로 낙동강하구둑 상류 접근수로에서의 최적의 유사량 공식과 유사 이송형태별 이류-확산 방정식을 제안하였다. 낙동강하구둑 상류 접근수로에 대해 Ackers and White와 Engelund and Hansen의 유사량 공식과 소류사와 부유사 유사 이송형태에 따른 이류-확산 방정식을 각각 다르게 적용하여 모의한 결과, Engelund and Hansen 공식을 적용한 경우에는 Ackers and White 공식을 적용한 경우와 비교했을 때, 평수 및 홍수 조건에서 모두 하상변동량이 거의 없는 것으로 나타났다. 또한 Ackers and White 공식으로 2002년에 발생한 실제 수문사상을 적용하여 하상변동 모의한 결과, 소류사 이송형태의 이류-확산 방정식을 적용한 모의결과가 부유사 이송형태를 적용했을 경우 보다 실제 하상변동에 더 근접한 것으로 나타났다.

    The effects of the selection for sediment transport equations and advection-diffusion equations according to different sediment transport modes on the modeling results of bed changes were analyzed using the CCHE2D and compared with field data in this paper. The most suitable sediment transport equation and sediment transport mode for advection-diffusion equation were suggested for the upstream approached channel of the Nakdong River Estuary Barrage. The bed changes simulated by the Engelund and Hansen formula were very small in the modeling case for the low and high flow discharges compared with the case of the Ackers and White formula. Also, the numerical modeling with the actual hydraulic event in 2002 presents that the bed change result with the bed load transport type for advection-diffusion equation was close to the field measurement more than the suspended load type.

  • 주제어

    낙동강하구둑 .   유사량 공식 .   유사 이송형태 .   하상변동 모의 .   CCHE2D 모형.  

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  • 이 논문을 인용한 문헌 (12)

    1. Kim, Chul-Moon ; Lee, Jeong-Ju ; Choi, Su-Won ; Ahn, Won-Sik 2011. "A Study on Development of Assessment Model for Spatio-Temporal Changes in River Bed Using Numerical Models" 韓國水資源學會論文集 = Journal of Korea Water Resources Association, 44(12): 975~990     
    2. Ji, Un ; Kim, Gwon-Han ; Yeo, Woon-Kwang 2011. "Analysis for the Effectiveness of Sedimentation Reduction Using the Channel Contraction Method at the Estuary Barrage" 韓國水資源學會論文集 = Journal of Korea Water Resources Association, 44(1): 31~40     
    3. Choi, Ho ; Rim, Chang-Soo ; Jung, Jae-Wook 2011. "Numerical Analysis of Riverbed Changes at the Downstream of the Ji-Cheon" 한국방재학회논문집 = Journal of the Korean Society of Hazard Mitigation, 11(3): 117~125     
    4. Ahn, Jung Min ; Lyu, Siwan 2012. "Development of GUI System for Coupling of Multi-Dimensional Hydraulic Models" 한국습지학회지 = Journal of wetlands research, 14(3): 353~363     
    5. Ahn, Jung-Min ; Park, In-Hyeok ; Lyu, Si-Wan ; Hur, Young-Teck 2012. "Evaluation of Optimal Grid Resolution for Hydrodynamic Proper Simulation" 한국지형공간정보학회지 = Journal of the korean society for geospatial information science, 20(1): 109~116     
    6. Son, Ahlong ; Han, Kunyeon ; Kwon, Takhoon 2013. "The Study of Bed Change and Stability Depending on Hydraulic Structure" 한국방재학회논문집 = Journal of the Korean Society of Hazard Mitigation, 13(3): 157~166     
    7. Jo, Chang Dae ; Yoon, Jong Su ; Lee, Jae Woon ; Cheon, Se Uk 2013. "Sedimentation Characteristics and Prediction of Riverbed Variation of the Lower Naeseong Stream Considered SS Concentration" 한국방재학회논문집 = Journal of the Korean Society of Hazard Mitigation, 13(4): 287~293     
    8. Ahn, Jung Min ; Lyu, Siwan 2013. "Analysis of Flow and Bed Change on Hydraulic Structure using CCHE2D : Focusing on Changnyong-Haman" Journal of Korea Water Resources Association = 한국수자원학회논문집, 46(7): 707~717     
    9. Jang, Eun Kyung ; Ji, Un ; Kwon, Yong Sung ; Yeo, Woon Kwang 2013. "Investigation for Bed Stabilization Methods in the Upstream Channel of Haman Weir Using CCHE2D Model" 대한토목학회논문집 = Journal of the Korean Society of Civil Engineers, 33(6): 2211~2221     
    10. Jang, Eun-Kyung ; Ji, Un 2014. "Numerical Analysis of Flow and Bed Changes for Selecting Optimized Section of Buried Water Pipeline Crossing the River" 한국산학기술학회논문지 = Journal of the Korea Academia-Industrial cooperation Society, 15(3): 1756~1763     
    11. Ji, Un ; Jang, Eun-Kyung ; Kim, Won 2015. "Long-term Bed Change Analysis and Equilibrium Bed Elevation Prediction after Weir Construction in Nakdong River" 한국산학기술학회논문지 = Journal of the Korea Academia-Industrial cooperation Society, 16(10): 7089~7097     
    12. Son, Ah Long ; Kim, Byung Hyun ; Moon, Bo Ram ; Han, Kun Yeun 2015. "An Analysis of Bed Change Characteristics by Bed Protection Work" 대한토목학회논문집 = Journal of the Korean Society of Civil Engineers, 35(4): 821~834     

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