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Aquifer with linear boundary between the two zones

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Aquifer with linear boundary between the two zones

Aquifer with linear boundary between the two zones

 

Assumptions:

aquifer is confined, isotropic, consisiting of two semi-infinite heterogeneous zones with a common straight boundary;

pumping well penetrates the main heterogeneity zone;

observation well penetrates the main or adjoining heterogeneous zone;

drawdown is estimated in two zones at any distance from the pumping well.

 

Arealy heterogeneous aquifer with two heterogeneous zones.

a – cross-section, b – plan view, observation well in the main zone; c – plan view, observation well in the adjoining zone.

1  –  main heterogeneity zone; 2 – adjoining heterogeneity zone.

 

Pumping regimes:

One well pumped at a constant rate

Pumping

Recovery

One or several wells pumped at a variable rate

Pumping

 

References

Максимов В.А. О неустановившемся притоке упругой жидкости к скважинам в неоднородной среде // ПМТФ. 1962. № 3. С. 109–112.

Fenske P.R. Unsteady drawdown in the presence of a linear discontinuity // Groundwater Hydraulics. 1984. N 9. P. 125–145.

Yeh H.-D., Yang S.-Y., Peng H.-Y. A new closed-form solution for a radial two-layer drawdown equation for groundwater under constant-flux pumping in a finite-radius well // Advances in Water Resources. 2003. Vol. 26, N 7. P. 747–757.