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经过约半个世纪的演变,六圩弯道已成为一个向北凹进的正弦曲线形弯道,水流顶冲点已下移到沙头河口以下,本河段内冲淤变化的强度大为降低;在其凹岸采取了一系列工程措施,有效地增进了六圩弯道的稳定性以及河岸的抗冲性;有较宽广的陆域供建设港口附属设施之用;深槽逼近凹岸,前沿水深与港阔足够万吨轮通行与调头的需要。这些都是建港的有利条件。但从长江镇扬河段的河势看来,三江口,特别是龙门口和沙头河口附近的冲刷,是六圩弯道河势稳定性的不利因素,也是其凹岸建港的不利条件,应采取工程措施加以控制。
After about half a century of evolution, the Liuwei bend has become a curved curve with a concave northward. The top flush point of the stream has moved below the Shatou estuary, and the intensity of scouring and silting changes in this section is much greater Reduce; in its concave bank to take a series of engineering measures to effectively improve the stability of Liu Wei bend and riparian impact; a wide range of land for the construction of port facilities; deep groove approach concave , Cutting-edge water depth and port width of 10,000 tons of round of traffic and U-turn needs. These are favorable conditions for establishing a port. However, from the perspective of the rivers in the Yangjiang reach of the Yangtze River, the erosion at Sanjiangkou, especially near the Longmenkou and Shatou Estuaries, is an unfavorable factor in the stability of the Liuwei bend and also a disadvantageous condition for the construction of its concave bank. Engineering measures should be taken to control it.