Aquifer - Water Table Aquitard Model for Hard Rock Areas

Two layered models are gellerally accepted to represent groundwater flow in fractured media. This paper presents a rigorous numerical analysis of an aquifer - water table aquitard system, which may be applied for hard rock areas. In this study, the water table aquitard considered is compressible and the system is of two-layered nature. The model is quasi three dimensional and takes into account the vertical variations of head in the aquitard. The water table is treated as an unknown boundary.

A new iterative scheme for analysing aquifer-water table aquitard system has been presented. It has been found that rigorous analysis may be necessary in the well field solutions while approximate methods are sufficient for a regional study in hard rock areas.