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| 基于河道平面变形数值模拟的等效造槽流量计算方法 | |
| 引用本文： | 假冬冬,邵学军,肖毅,周刚.基于河道平面变形数值模拟的等效造槽流量计算方法[J].水力发电学报,2011,30(1). |
| 作者姓名： | 假冬冬 邵学军 肖毅 周刚 |
| 作者单位： | 1. 南京水利科学研究院,南京,210029;清华大学水沙科学与水利水电工程国家重点实验室,北京,100084 2. 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084 3. 中国环境科学研究院河流与河口海岸带环境创新基地,北京,100012 |
| 基金项目： | 国家自然科学基金资助项目(5087904250779038); 国家科技支撑计划资助项目(2006BAB05B03) |
| 摘 要： | 针对河岸崩塌剧烈、河道平面变形特征显著的冲积河流,从河岸变形角度提出等效造槽流量(造床流量)的计算方法.以等效造槽流量作为计算条件,成功应用于下荆江石首河段平面变形的三维水沙数值模拟中,结果表明:采用等效造槽流量近似天然水沙过程,能较好地模拟出时段内河道的显著平面变形特征,与天然来水来沙过程模拟结果较接近;采用等效造槽流量作为计算条件时,其最大优势在于节省计算用时,提高计算效率,为长河段、长历时的河势模拟研究提供了一有效途径. |
| 关 键 词： | 河流动力学 造床流量 平面变形 三维水沙数值模拟 河床演变 河岸崩塌 |
Equivalent dominant discharge based on numerical simulation of planform changes in alluvial rivers with bank erosion |
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| JIA Dongdong , SHAO Xuejun , XIAO Yi , ZHOU Gang.Equivalent dominant discharge based on numerical simulation of planform changes in alluvial rivers with bank erosion[J].Journal of Hydroelectric Engineering,2011,30(1). | |
| Authors: | JIA Dongdong SHAO Xuejun XIAO Yi ZHOU Gang |
| Affiliation: | JIA Dongdong1,2,SHAO Xuejun2,XIAO Yi2,ZHOU Gang3(1.Nanjing Hydraulic Research Institute,Nanjing 210029,2.State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,3.Innovation Base of River,Estuary and Coastal Environment,Chinese Research Academy of Environmental Sciences,Beijing 100012) |
| Abstract: | A calculation method of equivalent dominant discharge(EDD) was proposed for alluvial rivers subject to significant planform changes due to bank erosion.A 3-D mathematical model was adopted to simulate the planform changes in the Shishou reach of Yangtze River under different inlet conditions of flow and sediment load in the period of 1996-1998.Results show a good agreement between the planform changes simulated by specifying the natural flow and sediment conditions at the inlet and by specifying EDD that gr... |
| Keywords: | river dynamics dominant discharge planform changes three-dimensional mathematical modeling fluvial processes bank erosion |
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