摘要
采用MIKE21软件中的水动力模块与泥沙模块进行库区泥沙数值模拟计算,并进行结果分析。通过将中国大Ⅰ型水库依地形、地貌概化为河道型、湖泊型、分支型、混合型,分别对不同工况下的泥沙冲淤情况进行了数值模拟,针对河道型水库,分析不同控制水位及不同泥沙粒径对泥沙冲淤过程的影响。结果表明:泥沙粒径是库区输沙率、冲刷强度、淤积厚度的影响因素,水库下游控制水位与洪峰流量、沙峰、悬移质浓度具有一定的相关性。
The water power module and the silt module of the MIKE21 software were used to calculate the value of the sand in the reservoir region. We classified the large （I） type reservoir to river type, lake type, branch type and mixed type by the topography. The sediment erosion and deposition under different situations were imitated. We analysed the effect of sediment erosion and deposition process in different reservoir water control levels and the diameter of sediment.The result showed that the diameter of sediment influenced the reservoir region sand transporting and the washing strength.There was a certain relationship in the reservoir water control level downstream with the peak flow, giggest sediment yield and the density of suspended load.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2013年第6期799-804,共6页
Journal of Shenyang Agricultural University
基金
国家自然科学基金项目(40071183)
关键词
泥沙冲淤
数值模拟
水库库型
sediment erosion and deposition
numerical simulation
reservoir type
