Study on scour around a structure on silt-sandy seabed by extension method of series models

A similar theory of series model test on sand scour is introduced, parameters of similar relation fo rmula are analysed through test results of series model.Conclusions are:(1) series model test is a effective way for test harvest by models whose geometry and current movement are similar and silt movement is not similar;(2) it is to of easible to employ series model test with prototype sand;and (3) only making two models that their scales are greater difference, the needful result can be obtained by test data extension and the adequat eprecision can be ensured.