中文摘要：

为阐明峡江枢纽围堰施工期河道水力特征,指导工程施工,采用峡江站水文资料及枢纽实测水位,在率定好1维数学模型的基础上,建立了赣江峡江段平面2维水流数学模型,定量计算枢纽重要水域水流流态,分析流场形态的变化特征和局部流态对枢纽尤其是围堰的影响,并将研究结果与物理模型试验结果做了对比分析.结果表明2维数学模型能较准确地计算围堰工程局部水位及流场变化情况,峡江枢纽围堰施工方案可行.

英文摘要：

In order to guide the cofferdam construction, the channel hydraulic characteristics were studied during the construction period. After verification the one-dimensional mathematical model with hydrological data of Xiajiang hydrological station and the measured water level at water control project dam site, a two-dimensional numerical model was developed to simulate waters region around the water control project with erodible bed and banks com- posed of well sorted-sandy materials. The waters flow pattern around the hub was quantitative calculated, the chan- ges characteristics of flow and effects of local flow patterns for hub especially cofferdam were analysis, and the re- search results were compared to physical model rest results. The results show that the two-dimensional mathematical model can accurately estimate the local water level and flow field of cofferdam engineering ehanges,Xiajiang water control project eofferdam construction scheme is feasible.