灌河口双导堤整治工程对岸滩演变的影响分析

By analysing sediment movement characteristics , we use the selected empirical formulas to forecast the coastal evolution after the regulation project in Guanhe estuary. The results show that the characteristics of sediment are different on two sides of the doublejetties, which should be studied respectively. The guidingjetty will stop the bed load transporting in East-West direction, and the accumulation will start at the root of the eastern jetty，then changing the eastern coastline .The sediment will deposite on large range by means of suspended load on the west side, whose influences can reach up to the Liezikou. The most serious deposition will happen at the old west chanel and the jetty-head.