长江口典型丁坝坝头冲深计算模式选择与验证

根据长江口的水文泥沙特性和丁坝的特征 .探讨了适合于长江口典型丁坝坝头最大冲深计算的模式 ,为丁坝坝头冲刷坑深度计算和判断冲刷坑的稳定性提供依据 .并给出了适合于长江口典型丁坝坝头床沙起冲流速的估算式 .

Model selection and verification for a typical spur dike''s scour depth in the Yangtze River Estuary

Based on the analysis of computing formulas of scour depth around spur dikes all over the world and the characteristics of hydrology and sediment in the Yangtze River Estuary, a suitable computing model for the scour depth around a typical spur dike in the Yangtze River Estuary is elaborated in the paper . According to the measured data, the practicality of the computing formulas is verified, and the estimated formula for the initial scour velocity in front of the dike is given.