Laboratory Study on Permeability of Layered Soil

Abstract

The coefficient of permeability of stratified soil deposits, when the flow is normal to the orientation of the bedding planes, has been observed to deviate from the value calculated theoretically. The coefficient of permeability is calculated by Darcy’s law. The present technical study deals with the results from the study of permeability behaviour of two layer soil system and three-layer soil system. For two layer soil system the coefficient of permeability of exit layer is considering as controlling factorfor three layer soil system the coefficient of permeability depends upon the relative positioning of soil. This study reinforces the point that the coefficient of permeability of a layered soil system, when the flow is normal to the orientation of the bedding planes, depends upon the relative positioning of the layers with different values of coefficient of permeability in the system.