| 基于相似性的多沙水库坝址含沙量预测 |
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| 引用本文： | 万新宇,包为民,王光谦.基于相似性的多沙水库坝址含沙量预测[J].水科学进展,2010,21(1):36-42. |
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| 作者姓名： | 万新宇 包为民 王光谦 |
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| 作者单位： | 1.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; |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 坝址含沙量过程是合理进行水库水沙调度的重要依据.在浑水总流模型的基础上,提出了基于洪水相似性的多沙水库坝址含沙量预测方法.通过聚类分析将洪水案例分组,并分别率定模型参数;根据洪水相似性动态选择未知洪水模型参数;进行模型计算.结果表明,分组率定参数一定程度上能够提高坝址含沙量预测精度,尤其是沙峰出现时刻.这对指导水库水沙调度具有实际意义,有助于决策者制定合理的排沙时机,提高排沙效率.
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| 关 键 词： | 水库 坝址 洪水 含沙量 总流模型 相似性 |
| 收稿时间： | 2009-02-19 |
Similarity-based prediction of sediment concentrations for reservoir dam-sites in sediment-laden rivers |
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| WAN Xin-yu,BAO Wei-min,WANG Guang-qian.Similarity-based prediction of sediment concentrations for reservoir dam-sites in sediment-laden rivers[J].Advances in Water Science,2010,21(1):36-42. |
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| Authors: | WAN Xin-yu BAO Wei-min WANG Guang-qian |
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| Affiliation: | 1.State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;2.College of Water Resources and Environment, Hohai University, Nanjing 210098, China |
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| Abstract: | Better knowledge of sediment concentrating processes for reservoir dam sites is crucial in reservoir water and sediment operations.In this study,a flood similarity-based method is developed for predicting reservoir sediment concentrations in heavily sediment-laden rivers.The method uses the main principle of the total flow model for sandy rivers.An approach based on the cluster analysis of historical flood events is employed in the model application.The events are first grouped and then used separately in c... |
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| Keywords: | reservoir dam-site flood sediment concentration total sandy-flow model similarity |
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