Abstract:In waterway regulation and beach protection projects,penetrating frame groups are usually completed by one-time construction.This construction method could not fully exploit the advantage of the height of penetrating frame groups,resulting in the unsatisfactory accumulation height of frame groups.It is proposed to use the topography after siltation of 1~2 permeable frame groups in advance,and then implement 1~2 permeable frame groups,that is,the construction method of permeable frame group is implemented by multi-layer and multi-time construction.The generalized flume test showed that this method could fully exploit the deposition topography after the early implementation and reach the ideal height of accumulation,so as to effectively improve the silting effect of the penetrating frame groups.