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五、八字咀枢纽坝线选择 八字咀枢纽位于信江东西两支分汊口的新渡万家附近。在分汊口有信江航道中最困难的浅滩童家滩,产生浅滩原因是河流分成东西两汊后,水流分散,流速减缓使泥沙淤积。另外,分汊口处有一个不对称的长舌形分流咀,使分汊口形成弯曲河段产生环流,将一部分泥沙淤积在东支进口右岸,在东支进口右岸出现高边滩。每年7～10月随着鄱阳湖水顶托影响,也使部分泥沙在这一带沉积。 多年来,为了增加枯水期东支通航水
Fifth, the eight-character hub junction dam line selection Bazizui junction is located in Xin Jiang East and West branch of the Xindu 10,000 near. At the sub-mouth there is the most difficult shoal shoal beach in the channel of the Xunjiang River. The cause of shoals is that after the river is divided into two parts, the water flow is dispersed and the flow rate is slowed to make silt sediment. In addition, there is an asymmetrical long-shaped divergent nozzle at the sub-junctions to make the sub-junctions form a meandering loop where a part of sediment is deposited on the right bank of the east branch import and a high side beach appears on the right bank of the east branch import. July to October each year with the impact of Poyang Lake water support, but also to some sediment deposition in this area. Over the years, in order to increase the dry season water traffic