| 三峡水库蓄水后荆江大堤险工段近岸河床演变分析 |
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| 引用本文： | 段光磊,龙慧,郭满姣.三峡水库蓄水后荆江大堤险工段近岸河床演变分析[J].长江科学院院报,2014,31(5):117-122. |
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| 作者姓名： | 段光磊 龙慧 郭满姣 |
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| 作者单位： | 长江水利委员会水文局 荆江水文水资源勘测局,湖北 荆州 434020 |
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| 基金项目： | 国家重点基础研究发展计划(973)项目(2012CB417001) |
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| 摘 要： | 针对荆江大堤在防洪减灾方面的重要性,选取荆江大堤沙市、盐观和郝龙3个重点险工段,根据三峡水库蓄水初期护岸监测资料,统计险工段典型冲刷坑的特征,分析了三峡水库蓄水后险工段近岸河床年际、年内演变特点及其影响因素,全面概括了三峡水库蓄水后险工状况。研究表明:三峡水库蓄水后荆江大堤险工段近岸河床普遍表现为近岸岸坡冲刷、水下岸坡变陡,最低点高程降低,且各险工段近岸河床演变规律不同。
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| 关 键 词： | 三峡水库 荆江大堤 险工 河床演变 |
| 收稿时间： | 2013-11-13 |
| 修稿时间： | 2014-05-12 |
Evolvement of Riverbed Near Bank of Dangerous Reach along Jingjiang River Levee after the Impoundment of Three Gorges Reservoir |
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| DUAN Guang-lei,LONG Hui,GUO Man-jiao.Evolvement of Riverbed Near Bank of Dangerous Reach along Jingjiang River Levee after the Impoundment of Three Gorges Reservoir[J].Journal of Yangtze River Scientific Research Institute,2014,31(5):117-122. |
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| Authors: | DUAN Guang-lei LONG Hui GUO Man-jiao |
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| Affiliation: | Jingjiang Bureau of Hydrology and Water Resources Survey, Bureau of Hydrology under Changjiang Water Resources Commission, Jingzhou 434020,China |
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| Abstract: | Jingjiang river levee is of great importance for flood control and disaster reduction. According to field data of bank protection during the initial impoundment of Three Gorges Reservoir (TGR), we analyzed the interannual and annual variations and their inducing factors for riverbed near the bank of dangerous reaches after the TGR impoundment. We also summarized the status of dangerous reaches after the TGR impoundment. Three typical bank revetment reaches, Shashi, Yanguan and Haolong, are selected for case study. Research results show that most of the bank slopes were scoured and steepened, the lowest elevation decreased, and the characteristics of riverbed evolvement are not identical in different dangerous reaches along Jingjiang River levee. |
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