Resumo

HUGUET-SIERRA, Gerardo Arturo et al. Calibration and validation of models to estimate the hydraulic parameters of a confined aquifer in a tropical region. Dyna rev.fac.nac.minas [online]. 2023, vol.90, n.225, pp.111-121.  Epub 07-Mar-2024. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v90n225.106250.

This article deals with the calibration and validation of models for water yield from a confined aquifer in a tropical region. From 2015 to 2019, 20 variable flow pumping tests were carried out. The average pumping flows varied between 0.07 and 17.4 L/s; the average drawdown of the water levels, between 5.99 and 50.94 m; the values of transmissivity and storage coefficient were lower than 77 m 2 /day and 6 x 10 -5, for probability of non-exceedance of 85%. In the calibration stage, the mean values of the coefficients of the proposed models a and b were in the order of 10 1 and 10 3. The determination coefficients obtained in the statistical adjustment of the proposed models are satisfactory, they varied between 76 and 85%. The validation stage revealed that the models need to be tested with a larger number of data.

Palavras-chave : confined aquifer; abatement of water levels; underground flow; tranmissivity; storage coefficient; validation.

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