HEADCUT MIGRATION ANALYSIS OF A COMPACTED SOIL

Predicting headcut migration is a complex problem. The rate of headcut migration is of specific interest for engineers designing earthen spi llways and embankments. Headcut migration tests of a compacted soil we re conducted in a 1.8-m wide and 29-m long flume with 2.4-m high sidew alls. Three simple physically based headcut migration equations that s eparately group material-dependent parameters and flow-dependent param eters are used in this study to analyze results of the headcut migrati on study The purpose of this article is (I) to relate the material-dep endent factors of these equations to material property measurements; a nd (2) to determine the appropriate adjustment algorithm for these mat erial-dependent factors for multiple material layers.