Abstract：The distribution characteristics of dynamic stress and pore water pressure of saturated stratum are analyzed during dynamic impacts firstly. Based on these results，the corresponding consolidation equation is established，and the general solution is also given. The dynamic load is considered as a stress pulse course with loading and unloading stage，and therefore，a simplified calculation method is given by dividing the total load into a series of uniform load increments with equal magnitude. In the above analyses，two new concepts of consoli- dation coefficient and pore pressure parameter under unloading condition are proposed. The mechanism of dynamic consolidation is studied. The above studies provide some basic conditions for the calculation of deformation of saturated stratum under dynamic compaction loading.
