|
| 摘要: |
| 为阐明峡江水利枢纽截流河道水力特性,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
好截流时期一维数学模型的基础上,建立了赣江峡江段平面二维水流数学模型,定量计算单戗堤枢纽截流时期
重要水域及过流建筑物水流形态,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,同时分析了双戗堤截流工况对改善龙口水利条件的影响程度. 结果表明
二维数学模型能较准确地计算截流时期围堰工程局部水位及流场变化情况,峡江枢纽大江截流施工方案可行. |
| 关键词: 峡江 围堰 水力特性 数学模型 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金项目(51209115); 江西省对外科技合作项目(20122BDH80025); 江西省自然科学基金项目
(20122BAB213019); 江西省科技支撑项目(20123BBG70196); 鄱阳湖环境与资源利用教育部重点实验室开
放基金(13005874); 江西省水利厅2011 科技项目 |
|
| Numerical simulation of closure berm hydraulic characteristics ofXiajiang hydroproject |
|
|
| Abstract: |
| In order to guide the cofferdam construction, hydraulic characteristics of the river channel are simulated
and analysed during the closure operation. After the verification of the one-dimensional mathematical model with
hydrological data collected from Xiajiang hydrological station and the measured water level during the water control
project construction, a two-dimensional numerical model is developed to simulate characteristics of waters around
the water control project. The flow patterns around the closure berm are quantitatively calculated, the rariation
characteristics of flow field and effects of local flow patterns on the closure berm especially the cofferdam are
analyzed, and the research results are compared with the physical model tests. And then the results of the double
closure berm are compared to these of the single closure berm. The results indicate that the two-dimensional
mathematical model can accurately simulate the local water level and flow field the cofferdam, and that the closure
construction scheme of the Xiajiang hydroproject is feasible and suitable. |
| Key words: Xiajiang River cofferdam hydraulic characteristics mathematical model |
