In order to keep track even and steady in high speed railway

it is necessary for no embankment settlement after construction; but red beds are easy to collapse and soften

which belongs to stuffing for the third grade. Based on results of long-duration static test of simple compression without confining pressure (the grain size of sample is below 2 mm and compacting degree is above 95 %)

the creep characteristics of red beds are analyzed; and at the same time settlement after construction can be predicted by numerical algorithm for engineering applications. So it is proved that red beds can be served as stuffing with a certain construction methods and no settlement after construction is entirely fulfilled.