利用实测水沙和地形资料，系统地分析了长江中游戴黄河段的演变特点、趋势及河道存在的主要问题。分析表明:近年来戴黄河段总体河势基本稳定，但局部河段变化仍较大，主要表现为戴家洲头分流区河势不稳定，主流摆幅较大，影响河势和航运安全；戴家洲左汊左岸及黄石河段凹岸已护岸线主流贴岸冲刷，岸线不稳定，影响堤防安全。在此分析基础上，提出了对戴家洲左汊已护岸线进行加固，实施直港凸岸中上段低水潜丁坝工程和戴家洲右缘中上段护岸工程，对黄石河弯进行护岸加固及对黄石江滩进行综合整治等治理措施，可为河道治理研究与设计提供参考。
Abstract
On the basis of measured data of water and sediment and terrain,we analyzed the features and trend of channel evolution and the main problems of the reach from Daijiazhou to Huangshi in the middle Yangtze River.Results show that the overall terrain keeps stable on the whole. Nevertheless,significant changes still exist in part of the reaches,for instance,the regime in the diverging area of Daijiazhou sandbar head is unstable with large mainstream swing,affecting the navigation safety; and the left bank of Daijiazhou sandbar’s left branch as well as the protected bankline at the concave bank of Huangshi reach are unstable scoured by the mainstream,affecting the dike safety. Furthermore,subsequent regulation considerations are put forward as follows bankline reinforcement for the left branch of Daijiazhou sandbar,submerged spur dike project above the average of convex bank,protection of upper and middle part of the right border of Daijiazhou sandbar,maintenance and reinforcement of Huangshi river bend and comprehensive regulation on Huangshi beach. This research could be a scientific basis for regulation and project design.
关键词
戴黄河段 /
河道演变 /
治理措施
Key words
Daijiazhou to Huangshi reach /
fluvial evolution /
regulation measures
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参考文献
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