长江马鞍山河段河势控制及应急工程分析

Study on River Regime Control and Emergency Works inMa'anshan Reach of Yangtze River

本文研究了长江马鞍山分汊河段河床演变的基本规律；分析了小黄洲汊道：上游段水流动力轴线的典型位置、转化周期及其对汉道演变的影响；总结了对该分汊河段进行河势控制的必要性和基本方法；提出了对该河段进行河势控制应急工程的方案设想。

Based on the field data in Maianshan Reach of Yangtze River, the following problems areanalysed in this paper.(1 ) The basic law of fluvial process in Ma'anshan Reach of Yangtze River is studied.(2) The typical position of power axis of flow in the upper reach, conversion periodic and the in-fluence on the bed development of Xiao Huang Zhou Reach are analysed.(3) The basic methed of river regime control of the braided channel is summarized.Based on the above-mentioned analyses, a project of river regime contral energency works inMaianshan Reach of the Yangtze River is presented.