长江澄通河段横港沙演变规律及整治效果预测

近年来长江澄通河段横港沙沙尾的冲刷后退态势有所趋缓，是实施河道综合整治工程的有利时机，整治措施包括护滩、围垦和潜堤工程等。利用实测资料与河工模型试验成果，对整治工程效果进行了分析，并开展了定床和动床试验研究。结果表明，工程实施后，对涨潮水流的障碍作用明显，对落潮水流影响较小，影响主要限于工程附近水域，且工程的实施有利于整体河势的稳定。研究成果为该河段的综合整治提供了技术支撑。

Evolution laws of Henggang shoal of Chengtong reach of Yangtze River and effects of regulation project

Since the Henggang shoal of Chengtong river reach tends to be stable with less erosion in recent years,it is an appropriate time to carry out integrated regulation works in the reach,including beach protection,reclamation and submerged dike.We analyzed the effects of the regulation works based on measuring data and results from physical model,and the studies of fixed bed and movable bed were conducted as well.The results showed that the influence of the regulation works would be limited within the waters ar...