在三峡工程变动回水区中一维全沙数学模型的研究  

STUDY ON 1-D TOTAL LOAD MATHEMATICALMODEL IN THE VARYING BACKWATER ZONE OF THE THREE-GORGE PROJECT

作　　者：赵士清 窦国仁[2] 

机构地区：[1]河港研究所 [2]南京水利科学研究院

出　　处：《水利水运科学研究》1990年第2期115-124,共10页

摘　　要：本文提出的一维全沙数学模型,既包含有非均匀悬移质不平衡输沙的计算,也包含有非均匀推移质(包括卵石)不平衡推移之计算。本模式的显著特点是,考虑了河床的补给作用,从而使描述泥沙冲淤过程的微分方程更趋完善,还基本解决了泥沙在横断面上的分配问题,使一维计算得到准二维计算的结果。在三峡工程变动回水区泥沙冲淤计算中,本模式的计算结果既与天然资料相一致,又与实物模型的试验结果相吻合。大量的数值计算表明,本模式具有通用性。This paper presents a 1-D total load mathematical model which is used to calculate unbalanced transport of nonuniform suspended load and bed load including gravel. The supply effect of the riverbed has been considered in equations of both suspended load and bed load. This paper also has offered a basic solution for obtaining sediment distribution along the cross section caused by fluctuation of deposition and erosion, and quasi 2-D calculated results can be obtained from the 1-D model. In calculation for deposition and erosion of the varying back water zone of the Three-Gorges Project, the calculated results of the mathematical model are in close agreement with both the field measured results and the experimental results obtained from the physical model. A large number of numerical calculations show the model has a wide universality.

关 键 词：三峡工程 泥沙 数学模型 

分 类 号：TV142[水利工程—水力学及河流动力学]