Abstract：
Take ｔｈｅ background of one deep collapsible loess foundation reinforcement by dynamic compaction, According to the technical requirements; it defines the parameters and steps of the dynamic compaction construction. According to the results of geotechnical test, standard penetration test and static load test, it examined the reinforcement effect of dynamic compaction. The research results show that: the reinforcement effect obviously when the deep collapsible loess foundation reinforcement by dynamic compaction, and the ground bearing capacity rise higher, and the effective reinforcement depth can computed by correction Menard formula before the similar project construction.
