SURFACE SUBSIDENCE AND DRAWDOWN OF THE WATER-TABLE DUE TO PUMPING

A fully coupled numerical method is presented for the analysis of the pumping of groundwater, taking into account the drawdown of the water table. The surface subsidence due to pumping is first studied assuming that the water table is not lowered as the groundwater is withdrawn. This solution is then compared with the solution for the case in which the drawdown of the water table is considered. Extensive parametric s tudies were carried out to provide non-dimensionalized design charts f or surface subsidence and drawdown of the water table due to pumping.