三峡工程变动回水区泥沙淤积的试验研究  

Investigation on sedimentation in varying backwater zone of Three Gorges Project

作　　者：窦国仁[1] 万声淦[1] 陆长石[1] 

机构地区：[1]南京水利科学研究院,南京水利科学研究院水工研究所,南京水利科学研究院河港研究所

出　　处：《水利水运科学研究》1995年第4期327-335,共9页

摘　　要：为研究三峡工程变动回水区的泥沙淤积，建造了长达８００ｍ的全沙试验模型。模型范围包括长江和嘉陵江约２００ｋｍ的天然河段。进行了清水、浑水验证以及蓄水位高程为１７５、１８０和１５６ｍ的长系列模型试验。明确了各蓄水位方案下变动回水区河段的冲淤规律、泥沙淤积对该区航道和沿江港口的影响。为三峡工程的技术验证提供了科学依据。A long river model, whose total length is about 800m, is used to simulate the varing backwater zone of the Three Gorges Project, covering 200km long of natural river reaches of the Yangtze River and Jialing River. The model is designed based on the total load similarity theory developed by first author. Verification tests show that the model has a basic similarity agreement with the prototype in the aspects of resistance characteristics,flow conditions and laws governing scouring and deposition. By using this model, a series of tests with normal reservoir elevations at 175m, 180m, and 156m with reservoir operation for 80 years and 30 years have been conducted to study the laws governing scouring and deposition in the varying backwater zone, the siltation configuration in channels and harbours for the feasibility studies of the Three Gorges Project.

关 键 词：变动回水区 泥少 淤积 冲淤平衡 三峡工程 

分 类 号：TV149[水利工程—水力学及河流动力学]