合川和井口水利枢纽对解决处于三峡库尾的嘉陵江河段泥沙淤积的作用

Functions of Hechuan && Jingkou Hydro-junction for Relieving Riverbed Sediment in Jialing River Located in the Backwater Area of Three Gorges Reservoir Head

重庆境内的嘉陵江河段正处于三峡库尾的回水变动段,三峡工程研究表明,嘉陵江河口泥沙淤积问题较严重,采用贴体正交坐标系下的河流泥沙运动的二维数学模型,对在嘉陵江河段上拟建合川和井口水库,解决嘉陵江河段泥沙淤积的影响进行计算分析。计算表明,两水库对解决处于三峡库尾的嘉陵江河段泥沙淤积问题有明显效果,两库的减淤效果主要是拦沙作用。

The section of Jialing River in Chongqing located in the backwater area of Three Gorges Reservoir Head is subject to rather serious sediment. This paper shows how to minimize the effect with the help of 2-D mathematical model of river sediment in body-fitted orthogonal coordinate systems. The study underlines that two dams, i.e. Hechuan and Jingkou Reservoirs, have significant benefits in relieving riverbed sediment.