Three-Dimensional Numerical Modeling of Groundwater Flow in the Vicinity ofFunnel-and-Gate Systems

摘要

The funnel-and-gate system is an in-situ technique for the restoration ofcontaminated aquifers. It consists of low to impermeable barriers used to divert the groundwater flow through a controlled area. In order to gain insight to the flow field dynamics of such systems, a series of three dimensional calculations was performed. In the calculations the width of the gate and the depth of the barriers were varied. The individual calculations were designed using the Plackett-Burman statistical experimental design method. The results of the calculations were used to develop a statistical model of the funnel-and-gate system (reported separately). The computations show little effect from varying the angle of the walls to the flow field in capturing the flow. The capture zone is also unaffected by increasing the hydraulic head. The higher the conductivity at the gate, the greater the flow and also the capture zone.