A NEW METHOD FOR EVALUATING WATER BEHAVIOR IN UNSATURATED SOIL BASED ON GROUND TEMPERATURE MEASUREMENT RESULTS

Abstract

In this paper, we focus our attention on relationship between water behavior in soil and variation of ground temperature due to rainfall and solar radiation. A new method was proposed to evaluate the water behavior in unsaturated soil based on the ground temperature measurement results. The modeling test for seepage behavior was also conducted to validate the proposed model. Results obtained from this paper show that using this approach, a new relationship that described the status of “Heat-Soil moisture characteristic curve” can be found. By using the developed technique, the time and the value when pore-water pressure was increased greatly was in good agreement with experiment.