摘要
根据黄河上游李家峡水库变动回水区贵德吊桥至松巴峡河段水文、泥沙、地形及地质资料,在河床演变分析的基础上,应用经过验证的航道整治二维数学模型,初步研究了阿什贡散乱浅滩整治措施。该浅滩1996、1999及2000年主槽变化较大,这与该河段河床突然放宽及沙卵石推移质运动频繁等因素有关,建议采用塞支强干保滩固槽并辅以疏浚的工程措施。
According to the historical data of hydrology,sediment,terrain and geology,a fluvial process of Guide-Songbaxia reach in backwater area of Lijiaxia Reservoir in the upper Yellow River was analyzed.A validated 2-D mathematical model for waterway engineering was employed to study the regulation measures of Ashigong separating shoal preliminarily.The result shows that main channel of the shoal has great changes during 1996,1999 and 2000,which is related to the sudden relaxation of river bed and the frequent sand bed load movement.Engineering measures of blocking tributary to strengthen the main stream and protecting the bank bar to fix the main channel,with dredging supplemented are proposed.
出处
《水道港口》
2010年第6期594-598,共5页
Journal of Waterway and Harbor
基金
国家自然科学基金资助项目(50879047
50779037)
关键词
变动回水区
散乱浅滩
航道整治
数学模型
backwater area
separating shoal
waterway regulation
mathematical model
