【摘要】 局部冲刷深度是丁坝工程设计中的一个关键参数,本文在对丁坝局部冲刷的过程和影响因素分析的基础上,根据国内外公开发表的试验资料,采用量纲分析和多元线性回归的方法,建立了清水冲刷条件下丁坝的局部冲刷深度的计算公式,并分析了丁坝与水流夹角、丁坝边坡和非均匀沙对局部冲深的影响系数,得出的公式可供在确定丁坝基础埋深时参考。更多还原

【Abstract】 The local scour depth is a key parameter in the design of spur dikes. Based on experiment data, a dimensional analysis for the estimation of local scour depth is presented. The scour depth is related to the approach flow Froude number, the spur dike length is relative to the approach flow depth, flow angle, slope of spur dike and the particle size distribution of the bed sediment. The test experience formula for estimation of the local scour depth is also given, it can be employed for engineers in the determination of the spur dike foundations.更多还原