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开敞淤泥质海岸是淤泥质海岸的主要类型，其自然演变过程，主要受沿海河流泥沙供应条件的制约，一旦泥沙供应消失，海岸往往进入不可逆转的侵蚀过程。江苏北部淤泥质海岸的侵蚀过程，起自１８５５年黄河入海口北归利津入海以后，主要是在近岸破波对岸滩物质的冲刷和潮流的输移扩散作用下进行的。通过对淤泥质海岸动力和沉积物性质的认识和概化，对海岸侵蚀过程作出定量模拟，并对该地区海岸防护工程作出评价和讨论。
The open muddy coast is the main type of muddy coast. Its natural evolution is mainly constrained by the sediment supply conditions of coastal rivers. Once the sediment supply disappears, the coast often enters an irreversible erosion process. The erosion process of the muddy coast in the northern part of Jiangsu Province started from the infiltration of Beiqu Lijin into the sea by the Yellow River into the sea in 1855 and was mainly driven by the erosion of the shore beach and the tidal current transport and diffusion. Through the understanding and generalization of muddy coastal motive force and sediment properties, the process of the coastal erosion is quantitatively simulated, and the coastal protection project in this area is evaluated and discussed.