新型生态护坡结构物理模型动床试验研究

近年来长江中下游实施了一系列生态护坡工程项目,具有很强的生态功能.基于保护长江中下游岸坡稳定性及为水生动植物提供良好生存环境的目标,提出新型生态护坡结构.通过物理模型动床试验观察新型生态护坡结构对不同类型岸坡的保护效果,分析不同类型岸坡冲淤变化机理.观察不同水流入射角度对弯曲河道岸坡稳定性影响,针对不同类型岸坡提出合理...

Dynamic physical model trials of new ecological slope protection structure

In recent years,a series of ecological slope protection projects have been implemented in the middle and lower reaches of the Yangtze River,which have strong ecological functions.In order to protect the stability of the bank slope in the middle and lower reaches of the Yangtze River and provide a good living environment for aquatic animals and plants,a new type of ecological slope protection structure is proposed.Through physical model test,the protection effect of the new ecological slope protection structure on different types of bank slopes is observed,and the change mechanism of erosion and deposition of different types of bank slopes is analyzed.The influence of different flow incidence angles on the stability of curved river bank slopes is observed,thus reasonable bank slope protection measures are put forward for different types of bank slopes.The results show that:1)Under the same conditions,the slope protection effect of the curved river is worse than that of the straight river.2)The erosion range of the curved river slope is positively correlated with the flow incidence angle.3)Different slope protection optimization schemes are proposed for different types of bank slopes,and the effect is obvious.