黄河宁夏段河道水沙变化及冲淤特性分析  

Water and sediment variations and characteristics of scouring-deposition in the Ningxia Reach of the Yellow River

作　　者：朱思远 

机构地区：[1]宁夏防汛抗旱指挥部办公室,宁夏银川750001

出　　处：《泥沙研究》2014年第5期54-58,共5页Journal of Sediment Research

摘　　要：分析了1986年11月-2012年10月期间黄河宁夏河段水沙变化及冲淤特性,并采用经验公式计算和实测资料分析预测了河段2013-2021年冲淤量。结果表明:该时段宁夏河段年平均水量为253.3亿m3,沙量为0.65亿t,分别为天然状态1950-1968年来水量的80.9%,沙量的28.1%,较天然状态时段部分河段冲淤量有所增加;冲淤量预测为910万m3,平均铺沙厚度为0.013m。Water and sediment variations,characteristics of scouring and deposition are analyzed in Ningxia reach of the Yellow River from 1986 to 2012.The volumes of scouring and deposition from the year of 2013 to 2021 are predicted by using the empirical formula and observed data.The results show that the annual average water and sediment discharges are 253.3 × 10s m3 and 0.65 × 10s t respectively.The annual average water discharge and sediment discharge is 80.9％ and 28.1％ of that in the natural condition from the year of 1950 to 1968.The predicted volumes of scouring and deposition are 910 × 104 t,and the average deposited thickness of sediment in the riverbed is 0.013m.

关 键 词：水沙变化 冲淤特性 冲淤量预测 宁夏河段 

分 类 号：TV147[水利工程—水力学及河流动力学]