CAJ | 학술논문

鳗鱼沙浅滩位于长江下游口岸直水道，属顺直宽浅水下分汊型沙质浅滩。顺直宽浅的河道属性使鳗鱼沙心滩和左、右两槽不稳定，年际间滩槽冲淤变化较大，甚至出现滩槽易位的现象，是长江下游深水航道主要的碍航浅滩。基于河床演变分析和模型试验相结合的方法，分析鳗鱼沙浅滩近期演变特征以及浅滩成因，确立了维持水下分汊的整治思路，提出江中实施龟背状潜格坝群的整治工程措施，并进行整治工程方案实施前后对比试验，分析研究整治工程方案实施后对航道条件的改善以及对工程河段河势可能产生的影响。
만어사천탄위우장강하유구안직수도，속순직관천수하분차형사질천탄。순직관천적하도속성사만어사심탄화좌、우량조불은정，년제간탄조충어변화교대，심지출현탄조역위적현상，시장강하유심수항도주요적애항천탄。기우하상연변분석화모형시험상결합적방법，분석만어사천탄근기연변특정이급천탄성인，학립료유지수하분차적정치사로，제출강중실시구배상잠격패군적정치공정조시，병진행정치공정방안실시전후대비시험，분석연구정치공정방안실시후대항도조건적개선이급대공정하단하세가능산생적영향。
Manyusha shallow is located at the Kouan straight reach, which is an underwater braided channel. Manyusha shallow is one main navigation obstacle shallow in the Yangtze River downstream. Based on the analysis of riverbed evolution and the physical model test, we analyze the evolution characteristics of Manyusha shallow in the recent period and the navigation obstacle characterisitcs and the causes, and establish the regulation idea and regulation engineering scheme of Manyusha shallow. According to the results of the model test, we analyze the regulation effects after the implementation of the recommended project and the effects on the river regime of Yangzhong reach.