射阳河挡潮闸闸下冲淤特性分析  

Analysis on Erosion and Deposition Characteristics Downstream Tidal Sluice in Sheyang Estuary

作　　者：徐雪松[1] 陈星[2] 张新周[1] 

机构地区：[1]南京水利科学研究院河港研究所,江苏南京210024 [2]河海大学港口海岸及近海工程学院,江苏南京210098

出　　处：《人民黄河》2011年第8期55-57,共3页Yellow River

基　　金：水利部公益性行业科研专项(200801016);国家自然科学基金资助项目(51079088)

摘　　要：根据实测资料分析了射阳河挡潮闸建闸前后水动力条件及泥沙条件的变化,从下泄水量减少、潮波变形和潮流量变化三方面及其所引起的泥沙条件的改变分析闸下淤积原因,得到三者与河道冲淤的基本关系。从淤积的时空分布形态来描述射阳河近年闸下河道的冲淤特性:射阳河建闸初期淤积严重,之后淤积量减少并且冲淤交替,总体仍呈淤积趋势,经历裁弯取直后发展至今,冲淤总量基本达到平衡,但河道内仍存在较大幅度冲淤。Based on the observed data of Sheyang estuary,the changes of hydraulic and sediment conditions before and after constructing tidal sluice are analyzed,explaining the silting reasons downstream tidal sluice in three aspects,i.e.reduction in the upper reach runoff tidal,wave deformation and changes of tidal discharge including the related sediment changes,and thus relationship between the three aspects and river evolution is obtained.The characteristics of erosion and deposition downstream Sheyang tidal sluice are described through temporal and spatial distribution pattern of erosion and deposition in recent years,showing that the equilibrium in total sedimentation amount is achieved with larger erosion and deposition ranges still existing in the river.

关 键 词：水沙条件 冲淤特性 潮波变形 射阳河闸 

分 类 号：TV147[水利工程—水力学及河流动力学]