在保持渗流区原有的边界条件和渗透流量不变的条件下，把渗流看成是由液体质点充满全部渗流区的连续流动，这就是渗流模型。(Under the condition that the original boundary condition and seepage flow of the seepage zone remain unchanged, the seepage is regarded as a continuous flow of liquid particles filled with all the seepage areas, which is the seepage model.)