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西江龙圩水道是由三个江心洲组成的三汉河段,水流、泥沙、地形条件复杂,为浔江段上最复杂的沙石浅滩。自60年代以来,选择通航支汊问题一直成为争议的焦点。鉴于当时条件,选择了中支作为通航支汊,经过整治也有一定成效,但只能达到较低的通航标准,故至今仍有争议。本文通过水道原体观测和模型试验资料,首先对现行中支航道进口的“洲滩”浅段的形成原因进行了较全面的分析,同时对全河段的水流、泥沙、河床组成等方面亦做了较全面的分析比较;综述了各支通航的可能性。认为,选择右支做为该水道中、枯水通航支汊是可行的。
The Xijiang Longxu waterway is a tributary of the Sanhan River which consists of three rivers and streams. The water flow and sediment have complicated topographical conditions and are the most complex sand-shoals in the Yongjiang section. Since the 1960s, the issue of choosing navigable branches has been the focus of controversy. In view of the conditions prevailing at that time, the choice of the middle branch as a navigable branch has also achieved some success after remediation. However, it has only reached the lower standard of navigation and is still controversial. Based on the data of original hydrographic observation and model test, this paper firstly analyzes the formation reason of the shallow section of “Chau-han” currently imported by the branch channel and at the same time analyzes the causes of water flow, sediment and riverbed composition in the entire river section Also made a more comprehensive analysis and comparison; reviewed the possibility of various branches of navigation. That the choice of the right branch as the waterway, dry water navigation branch is feasible.