护岸工程在控制主流发展。稳定河势、防止切滩改道和江岸坍塌，保护沿江城乡居民、耕人边境堤防工程和防止大片国土流失方面，发挥了很大作用，收到了良好的效果。目前，黑龙江省的重点江河护岸工程设计中，为了调整流向，改变流速，增加主河道的流量，在江河上布置了多处丁坝 Bank protection works to control the development of the mainstream. It has played a great role in stabilizing the river regime, preventing the diversion of cut-off beaches and the riverbank collapse, protecting urban and rural residents along the rivers, dugping frontier embankments and preventing large-scale land loss. They have received good results. At present, in the design of major river bank protection works in Heilongjiang Province, in order to adjust the flow direction, change the flow rate and increase the flow of the main channel,