Abstract: The processes of filling water into elastic porous medium without the action of horizontal stress and water head adjusting caused by incomplete block in partial region after fulling water were analyzed by using the method of finite difference.It is found that for a certain point in aquifer the water level is not only related to the position of the point and the boundary conditions of the aquifer,but also associated with the pressure conductivity of itself and surrounding areas.The block at different degree in aquifer may cause the change of water level at a given point.And the size of block region can greatly affect on the distribution of water level in aquifer and the change of water head.

Key words: Permeation flow, Porous medium, Numeral simulation