The research outcomes at home and abroad about dynamic pore water pressure developing models are firstly reviewed; then the dynamic triaxial tests which used saturated core cohesive soil and dam foundation gravel of a rockfill dam were performed; and Gu Gan-chen models of these two materials were put forward. And dynamic pore water pressure developing rules of gravel were analyzed in detail. The results of dynamic intensity tests show that with the increasing of vibration times and vibration intensity

dynamic pore water pressure increases. While with the increasing of consolidated stress ratio

dynamic pore water pressure decreases. For cohesive soil

in spite of equivalent-pressure or unequivalent-pressure consolidation

liquefaction phenomenon didn’t appear. For gravel

final dynamic pore water pressure could all reach confining pressure under equivalent-pressure consolidation

and when consolidated stress ratio Kc exceeds or equals to 1.5

whether samples could liquefy lied on that dynamic stress σd could make samples stretch or not. And the effects of consolidated stress ratio Kc on various soils were different.