System Dependence of the Water Content‐Pressure Head Relationship

Abstract

AbstractThe drainage to a water table of a saturated, stratified sand column in which a fine sand overlay a course sand evidenced a relationship between water content and pressure head for the coarse sand which was characteristically different from that obtained during the drainage of a uniform column of the coarse sand. The water content‐pressure head relationship for each system is presented and the system dependence of the relationship discussed. The effect of this system dependence, and the limitation it places on the use of current analytical approaches in predicting pressure head and water content profiles during the drainage of layered soils, is then considered.