Abstract
Some features of scouring and flow at spur-dike-like structures are discussed based on experiments under clear-water scouring. Considering the flow concentration to a restricted region of the scour hole, a simplified analytical model for the prediction of the maximum scour depth at the structures is developed. The model predicts scour depth at sloped-wall as well as at vertical-wall abutments, being verified by the available data and previous formulae. A model constant for flow concentration is identified by the inversion of experimental data. Finally, an interpolated analytical model for the time-change in the maximum scour depth is developed and verified by the experimental data under the higher shear stress condition.
