三峡工程下游引航道口门内泥沙淤积研究  

Study on sediment deposition located inside downstream approach channel of Three Gorges Project

作　　者：李国斌[1] 许慧[1] 尚倩倩[1] 宋东升[1] 高亚军[1] 

机构地区：[1]南京水利科学研究院,江苏南京210024

出　　处：《泥沙研究》2011年第6期27-31,共5页Journal of Sediment Research

摘　　要：着重对三峡工程下游引航道口门内异重流淤积的形成机理、计算方法进行了探讨,综合比较了各家公式的计算成果,并与实测资料进行了对比。研究表明:下游引航道口门内为异重流淤积,应用韩其为公式计算下游引航道口门内含沙量沿程衰减过程和泥沙淤积量,计算值与实测值较为一致,可在下游引航道附近水文泥沙状况已知的条件下,预估下游引航道内的泥沙淤积量。This study focuses on the formation mechanism and calculation method of sediment deposition caused by density current,which located inside the downstream approach channel downstream the Three Gorges Project.A comparison of the results of several calculation formulas with the measured data is analyzed comprehensively.The results indicate that inside the downstream approach channel,the sediment deposition is caused by density current,the longitudinal decay process of sediment concentration and the amount of sediment deposition calculated by Han＇s formula are more consistent with the measured data,and Han＇s formula can be applied to predict the amount of sediment deposition when the flow and sediment conditions near the downstream approach channel are known.

关 键 词：三峡工程 异重流 引航道 泥沙淤积 

分 类 号：TV148.6[水利工程—水力学及河流动力学]