SÁ, S. P. C.; http://lattes.cnpq.br/2278633599417220; SÁ, Soniaéli Pires de Carvalho.
Resumen:
The necessity of this thesis arose because of the fact that Large Diameter Wells
- otherwise called Amazons Wells - are becoming more and more popular in all over
the semi-arid world.
This work was realized using the realistic field data on large diameter and
tubular wells, located in the interior of Paraiba State namely at Ibiara, Jerico and
Santa Cruz in order to construct "Hydrodynamic Characteristic Curves" that involve:
Discharge (Q), Drawdown (S,), Diameter ( ) and Efficiency of Wells (E %) and
Filter Factor (ff).
With this in view, simulation models were developed and utilized for Large
Diameter Wells and Tubular wells, in the calibration and simulation of the data. In the
Large Diameter Wells mathematical simulation model is inserted the Concept of Filter
Factor(ff) which is a function of the construction material of Amazons Wells, namely
bricks and cement mortar. From then onwards, tables were prepared which serve for
constructing such curves. Further, the equipotential (curves were plotted with the
hydraulic heads obtained at the respective nodes of the simulated network) (PHl(tp)),
to serve as na example.
Once such characteristic curves were obtained, the interpolation was used to
obtain the regression equation for the points in question, in such a form as to result in
not only obtaining curves but also in the respective equations that describe these
curves to facilitate exploration of Large Diameter Wells in the study areas.
This information may be utilized by agronomers or agriculturists of the
respective areas of study, to arrive at the the correct diameter to be adopted for the
Amazons wells in the given locality, as per the well discharge needed in the given
locality, without causing prejudice, neither for the aquifer, nor to the production well,
thus restricting the drawdown in the well within the acceptable limits.
