对河流岸线和浅滩变化进行对比分析，发现闽江口南部水道多呈淤积状态，北边水道则为弱侵蚀型岸线；
It is shown from the analysis results that most of the southern channels in the Minjiang estuary area were silted up, and the coastlines of the northern channels were weakly eroded;
遂宁组母质易风化，风化后的碎屑黏聚力弱、结构力差，易遭受径流侵蚀。
Parent material of Suining group is easy eroded, and the erosion material is of poor cohesion and structure and even easier being eroded by runoff.
通过水槽实验发现，底床强度弱区的土体在波浪剪切力作用下，会发生整体滑动现象，造成床面的剧烈侵蚀。
The flume experiment shows that the low strength soil in the action of wave shearing force would slide, as the result, strong erosion happens on the bottom.
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