【摘要】 通过水力模型试验资料分析,建立了丁坝局部最大冲深的计算关系式;探讨了平台加齿坎基础冲刷防护措施的削弱作用;建立了平台或平台加齿坎基础防护形式的局部冲刷深度的计算模式。在水流稳定流条件下,通过不同条件下的长历时试验,分析了丁坝局部冲刷过程的特点及有关影响要素;实验结果提出的计算公式的计算值完全吻合。更多还原

【Abstract】 Based on the data of the hydraulic model test,the calculation formula of the maximum depth of partial scouring of the groyne is put forward,the cutback for protection against erosion of the foundation by means of the platform together with the toothed pit is discussed,and the calculation formulas of the maximum depth of partial scouring of the groyne are given when the platform or the platform together with the toothed pit is applied as the protection measure of the groyne.The presented formulas are verified by the observations of prototype groynes.The effect of the cutback for protection against erosion of the groyne by means of the platform together with the toothed pit is obvious,so such protection measure can be widely applied in hydraulic engineering.更多还原