2012•Journal of Jinggangshan UniversityRequires access

TESTING STUDY ON PERMEABILITY CHARACTERISTICS OF UNSATURATED SOIL

Liu Xiao

Abstract

For complexity and diversity of unsaturated soil behaviors,there lies a great difference in permeability characteristics between unsaturated soil and saturated soil.It is difficult to perform test of unsaturated soil because of many factors.With the special apparatus of steady seepage,the permeability characteristics of unsaturated soil of is tested and studied,which sets up a new method for direct measuring the hydraulic conductivity of unsaturated soil.According to the test results,the relation between water content and hydraulic conductivity is obtained.The relation curves are fitted with the model of van Genuchten-Mualem to deduce correspondent fitting functions.

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Key concepts: Hydraulic conductivity, Permeability (electromagnetism), Soil science, Vadose zone, Water content, Soil water, Pedotransfer function, Geotechnical engineering