泥沙研究2025，Vol.50Issue(4)：15-22,8.DOI:10.16239/j.cnki.0468-155x.2025.04.003
清水条件下河床冲淤平衡时间研究
Study on the balance time of river bed scouring under clear water conditions
摘要
Abstract
The study of river balance mainly focuses on the equilibrium judgment and the change of water and sediment in the balance process.However,the study on the equilibrium time is relatively limited.Taking the generalized flume as the research object,a one-dimensional water-sediment model is used to study the equilibrium time of the riverbed scouring under clear water conditions,and the relationship between the equilibrium time and the influencing factors under clear water conditions is analyzed.The results show that the equilibrium time decreases first and then becomes stable with the increase of unit width discharge,and it decreases monotonically with the increase of initial bed slope.When the median particle size is constant,the equilibrium time increases with the increase of the standard deviation of sediment size distribution.Based on the numerical simulation results and dimensionless processing of selected appropriate parameters the calculation formula of the equilibrium time of river bed scouring with the action of clear water is fitted and proposed.关键词
平衡时间/一维水沙模型/清水冲刷/动床Key words
equilibrium time/one-dimensional water and sediment model/clear water scouring/movable bed分类
建筑与水利引用本文复制引用
李乐诗,吴腾,秦杰,曾睿,滕辉..清水条件下河床冲淤平衡时间研究[J].泥沙研究,2025,50(4):15-22,8.基金项目
国家重点研发计划项目(2023YFC3209302-05) （2023YFC3209302-05）
国家自然科学基金项目(52179061,52079043) （52179061,52079043）
