【作者】 周赤建；

【导师】 朝伦巴根； 张洪武；

【作者基本信息】 内蒙古农业大学 ， 农业水土工程， 2004， 博士

【摘要】 本文根据泥沙运动基本理论的最新研究成果，建立了平面二维非恒定、非均匀、全沙数学模型对重庆河段的水泥沙运动和河床变形进行模拟。模型中，根据涡团模式，推求出新的紊动粘性系数计算公式： 同时，根据能量平衡原理，推导出河岸拓展方程。模型中还引入了张红武提出的悬移质挟沙力公式：和张俊华-张红武推移质输沙率公式：对现有三峡库区数学模型进行了改进。重庆河段正态模型试验资料和原型观测资料计算结果表明，模型计算的沿程水位、断面流速分布和河床冲淤变化与原型资料符合较好。为今后研究河流水沙运动规律提供了理论依据。更多还原

【Abstract】 Based on the up-to-date research results of sediment movement, the non-equilibrium ,non-homogeneity two dimensional numerical model for full sediment has been developed. and by which the water sediment movement and river bed changing of Chong Qing Section of Yangzi River were simulated. According to the eddy mass mode, a new formula was developed for calculating viscidity coefficient as follows: At the same time, based on the energy balance principles, we construct a river width expanding equation :Also introducing the formulae to calculating the carrying silt capacity of suspension sediment proposed by Hongwu Zhangand the formulae to calculating the rate of transportation of bed load given by Junhua ZHANG and Hongwu ZHANG Taking improvements to math model of area in frond of San Xia dam. The calculating results using the testing information from undistorted model of Hong Sing section and using prototype observation information indicate that the stream wise water table, sectional velocity distribution and channel sedimentation from the model coincide well with prototype size of that. Those will provide basic theory for study regulation of water and sediment movement.更多还原