Predicting the Advective Flow Velocity in a Confined Aquifer Using a Single Well Tracer Test

摘要

A study was conducted to determine the form of the solution required to solve for the advective flow velocity in a porous medium where observation is limited to a single penetrating well. An analytical equation expressing advective flow velocity as a function of well discharge and arrival time of an injected tracer was derived for a confined aquifer. The modelling process used to derive the velocity equation is described. An experiment was conducted to test the accuracy of the velocity equation at the laboratory scale. A sodium chloride tracer was injected into a sand tank model of a confined aquifer, allowed to drift, and then recovered through a miniature well. The same well that was used for injection.