细沙河床丁坝局部冲刷深度计算公式的验证

Verification of calculation formulas for local scour depth of fine sediment riverbed around spur dikes

局部冲刷深度是丁坝工程设计中的一个重要参数,关系着整个工程的安全与造价。为使河道整治工程建设更加安全、经济,在丁坝设计中应选取较符合实际的丁坝局部冲刷深度计算公式,故对丁坝冲刷计算公式的检验显得尤为重要。本文选取了九组具有代表性的公式,利用国内外河流丁坝冲刷实测资料和模型实验资料,分别运用相关系数法、最小距离法、集中系数法、偏离系数法和聚类分析法对各家公式进行检验分类。

Local scour depth around spur dikes is a key parameter for design of spur dikes, a factor often relating to engineering safety. An accurate formula for its calculation would be an important decision in terms of engineering security and cost. This paper presents a verification and comparison of nine formulas through comparison with the data of numerical simulations and field observations, using correlation coefficient method, minimum distance method, concentration coefficient method, deviation coefficient method, and clustering methodology.