曼厅大沙坝浅滩 ,因枯水期水浅碍航 ,对于浅滩的整治 ,主要是通过抛坝 ,束水归槽 ,增加航槽水深 ,以达到整治的目的。但抛筑的坝体 ,常被水流冲毁 ,本文分析了坝体破坏的机理 ,提出了几种防护措施 ,其中钢筋穿石护坝经过多年实践 ,取得了很好的效果。 Mansudae large sand dam forcings, due to dry shallow water for navigation, for the renovation of the shoal, mainly through the dumped dam, bundle of water to trough, to increase the depth of the navigation channel in order to achieve remediation purposes. However, the dumped dam is often washed away by water current. In this paper, the mechanism of dam failure is analyzed and several protective measures are put forward. Among them, reinforced rebar dam has achieved good results after years of practice.