- Volume 16 Issue 10
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Long-term Bed Change Analysis and Equilibrium Bed Elevation Prediction after Weir Construction in Nakdong River
낙동강의 보 구조물 설치 후 장기 하상변동 분석 및 평형하상고 예측에 관한 연구
- Ji, Un (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
- Jang, Eun-Kyung (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
- Kim, Won (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
- Received : 2015.09.03
- Accepted : 2015.10.08
- Published : 2015.10.31
Bed changes in the Nakdong River were analyzed with long-term monitoring data for analyzing riverbed change patterns after Four Major Rivers Restoration Project (FMRRP). Also, possible long-term bed changes were predicted using one-dimensional numerical model for the section where the largest change was observed after FMRRP. The sensitive analysis was performed with different incoming sediment discharge conditions and sediment transport equations. The numerical model was calibrated by comparing short-term monitoring data and simulated results, and was applied for predicting bed change after 10 years. As a result of monitoring data analysis, the largest change in bed elevation occurred at the section between the Changnyeong-Haman and Hapcheon-Changnyeong weirs. The result of one-dimensional numerical modeling for 10 years indicated that maximum depositions of 2.07 m and 3.26 m were produced in this section.
Grant : (15주요)친수가치 제고를 위한 홍수터관리 기술 개발
Supported by : 한국건설기술연구원
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