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2. Evolution of the hydraulic drainage zone in the moving aquifer
In this second paragraph, we present analytical solutions in two horizontal dimensions of the equations of groundwater hydraulics, to study the unsteady effects of well discharge into the aquifer (before the establishment of a settled regime).
2.1 Unsteady flow from a well into a moving aquifer
From the start of production or injection (flow rate Q), the unsteady hydraulic drainage zone in the aquifer zone around the well grows with time, eventually reaching its stationary dimensions at long times (figure 5 ) (§
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Evolution of the hydraulic drainage zone in the moving aquifer
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