正挑桩式丁坝壅水特性及其冲刷深度计算模式理论  

Theoretical Study on Calculation of Scouring Depth and Backwater Height Associated with Pile Permeable Spur Dike

作　　者：周银军[1] 陈立[1] 桂波[1] 刘欣桐[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《四川大学学报（工程科学版）》2009年第2期58-63,共6页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家科技支撑计划资助项目(2006BAB05B03-05);国家自然科学基金资助项目(10672125)

摘　　要：桩式丁坝是一种新型河工建筑物。针对其区域水流特性及局部冲刷,通过理论分析,并结合试验验证,分析了其局部水头损失机理,得出了正挑桩式丁坝壅水高度的计算公式,建立了坝头水流的叠加模式和坝轴断面的流速分布式,导出了其局部最大冲刷深度的理论计算公式。所建立的壅水高度和最大冲刷深度计算公式具有清晰的数学模式和明确的物理意义,并得到了室内试验的验证,可为工程设计提供技术依据。Pile permeable spur dike is a new fashion river regulation building.In case of the characteristics of flow nearby it and the local scour,the combination of type of analysis and indoor experiment were used to analyze the mechanism of the local water head loss around permeable spur,and then the calculation formula for backwater height of 90° permeable spur was obtained.Based on this research,the model nearby superposed flow spur and the velocity distribution of spur head flow were built,At last,a theoretical ...

关 键 词：桩式丁坝 壅水高度 冲刷深度 叠加水流 

分 类 号：TV863[水利工程—水利水电工程]