Instantaneous Profile Method Experiment Application by Using the Soil Hydraulic Conductivity Automatic Test System

Hydraulic conductivity is the conduct capacity of water movement in soil；it is an important parameter to reflecting the relationship of unsaturated soil hydraulic conductivity with water content or matric potential.Two kinds of soil tests carried out three times by using TS-4 type soil hydraulic conductivity test system.The results showed that the automatic measurement system had properties of convenient and efficient，high precision.It provides an effective method for laboratory simulation of unsaturated soil water movement parameter determination experiment.