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。
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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参考文献
[1] 段光磊,余文畴,龙 慧.荆江大堤护岸险工典型矶头近岸河床演变分析[J]. 泥沙研究,2007, (6):32-38. (DUAN Guang-lei, YU Wen-chou, LONG hui. Analysis on Near Bank Riverbed Evolvement of Typical Rock Spurs along Jingjiang Levee[J]. Journal of Sediment Research,2007, (6) :32-38. (in Chinese))
[2] 段光磊,唐从胜,王维国.荆江河段河势变化对护岸工程影响的研究[C]∥长江护岸及堤防防渗工程论文选集.北京:中国水利水电出版社,2003:86-92. (DUAN Guang-lei, TANG Cong-sheng, WANG Wei-guo. Influence of River Regime Variation in the Jingjiang River on Bank Revetment [C]∥Selected Essays of Bank Revetment and Dyke Seepage Control Engineering at Yangtze River.Beijing: China Water Power Press, 2003:86-92. (in Chinese))
[3] 段光磊,彭严波,王 强.长江荆江河段河道演变对防洪影响研究[J].人民长江,2007,38(2):100-102. (DUAN Guang-lei, PENG Yan-bo, WANG Qiang. Influence of River Evolvement in the Jingjiang Reach of Yangtze River on Flood Defence[J].Yangtze River, 2007, 38(2): 100-102. (in Chinese))
[4] 余文畴,卢金友.长江河道崩岸与护岸[M].北京:中国水利水电出版社,2008. (YU Wen-chou, LU Jin-you. River Bank Failure and Bank Revetment in Yangtze River[M]. Beijing: China Water Power Press, 2008. (in Chinese))
基金
国家重点基础研究发展计划(973)项目(2012CB417001)
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