CAJ | 학술논문

三峡大坝175 m 成库运行后将对变动回水区的水流特性产生重大影响，对其展开分析将为该河段的航道整治、通航规划、水沙规律研究提供重要理论支持。在长江上游水文局实测资料基础上，选择变动回水区中段猪儿碛河段作为典型代表河段，采用数值模拟与原形观测数据理论分析相结合的方法，借助 Aquaveo．SMS 软件建立平面水流二维数学模型，将年内各时段与有无回水影响的各种工况进行组合，分析探讨了回水作用对流场、流速横向分布、水动力轴线等水动力条件的影响。分析成果可为该河段的河流研究与航道治理提供依据，建立的数值模拟方法可为同类河段的数模研究提供参考。
삼협대패175 m 성고운행후장대변동회수구적수류특성산생중대영향，대기전개분석장위해하단적항도정치、통항규화、수사규률연구제공중요이론지지。재장강상유수문국실측자료기출상，선택변동회수구중단저인적하단작위전형대표하단，채용수치모의여원형관측수거이론분석상결합적방법，차조 Aquaveo．SMS 연건건립평면수류이유수학모형，장년내각시단여유무회수영향적각충공황진행조합，분석탐토료회수작용대류장、류속횡향분포、수동력축선등수동력조건적영향。분석성과가위해하단적하류연구여항도치리제공의거，건립적수치모의방법가위동류하단적수모연구제공삼고。
The operation of Three Gorges Reservoir at 1 75m impounded water level will have a significant impact on the flow characteristics in backwater area.Analysis in this regard will provide theoretical support for the waterway regulation,navigation planning,and study on water and sediment regularities.According to the observed data from hydrology bureau in the upstream of Yangtze river,we employed Aquaveo.SMS to establish a two-dimensional plane flow model,and simulated the hydrodynamic conditions in the presence of and in the absence of backwater in differ-ent periods of year to analyse the influence of backwater on hydrodynamic conditions (flow field,horizontal distri-bution of flow velocity,and hydrodynamic axis).Zhuerqi reach in the backwater area is selected as a typical exam-ple for the research.The numerical simulation method could be taken as reference for similar study.