Comparative Experiment of Finger Flow of Homogeneous Soil and Layered Soil

To fully explore the reason of finger flow and its change law,taking three kinds of soil,which is wildly distributed in northwest of China,as experiment material,the finger flow experiment of layered soil and homogeneous soil under the condition of sufficient water supply indoor is conducted in this paper.The results show that all layered soil have finger flow phenomenon but homogeneous soil have not finger flow.The reason is simply analyzed in the end.