Analysis on influencing factors and simulation of sediment release by density current: the case of Xiaolangdi Reservoir

摘要：

　　Density current venting by bottom outlets is the main form of sediment release from large reservoirs during sediment retention periods.Taking Xiaolangdi Reservoir as a case study,this study analyzed influencing factors of sediment release by density currents and proposed a semi-empirical formula to simulate the density current release process.The results show that the amount of incoming water and sediment,length of backwater,and sedimentation volume upstream of backwater zones are the main factors influencing sediment discharge.However,the importance of influencing factors varies slightly for different sediment supply areas.The semi-empirical formula provides a good simulation of the actual sediment release process under a relatively stable water level,and thus,it can extend scientific and technical support necessary for reservoir operation.

作者: Wang Ting Wang Yuanjian Ma Huaibao Qu Shaojun

作者单位: Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China;Key Laboratory of Yellow River Sediment Research,MWR,Zhengzhou 450003,China

会议类型: 国际会议

会议名称: 2018 International Symposium on Water System Operations(ISWRSO 2018)(2018年水资源系统及调度国际研讨会)

会议地点: 北京

会议语种:英文

页码: 1-9

在线出版日期: 2018-10-12（万方平台首次上网日期，不代表论文的发表时间）