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《Yellow River》 2012-01
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Water and Sediment Variation and Characteristics of Scouring and Deposition of Ningxia-Inner Mongolia Reach of the Yellow River

ZHOU Li-yan,CUI Zhen-hua,LUO Qiu-shi(Yellow River Engineering Consulting Co.Ltd.,Zhengzhou 450003,China)  
The amount of sediment deposition of Ningxia-Inner Mongolia Reach was calculated by section method in this paper,and the water and sediment variations as well as the characteristics of scouring and deposition were also analyzed.The results show that the Ningxia reach is in a tiny silting condition for years.The total amount of sediment deposition from Bayangaole to Putanguai in Inner Mongolia reach is-0.009×108 t annually from the year of 1962 to 1982,and the number is 0.379×108 t annually from the year of 1982 to 1991 and 0.540×108 t from the year of 1991 to 2000 and 0.620×108 t from the year of 2000 to 2008.The deposition in the main channel of Inner Mongolia reach accounts for 90.9% of the whole section,which causes the reduction of bankfull discharge and become a huge threat in flood season and ice flood season.
【Fund】: 水利部公益性行业科研专项(200701020)
【CateGory Index】: TV143
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