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Deviations from Classical Behaviour in Pumping Test Analysis
Author(s) -
Mar Gonzalez Maria,
Rushton K. R.
Publication year - 1981
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.1981.tb03502.x
Subject(s) - borehole , radius , flow (mathematics) , aquifer , geology , geotechnical engineering , test (biology) , mechanics , mathematics , computer science , physics , paleontology , computer security , groundwater
This paper discusses certain of the reasons for deviations from the classical type curve behaviour during pumping tests. A particular series of pumping tests in a confined limestone aquifer is considered; the tests include a step test, a 3‐day test and a 71‐day test. Using a radial flow numerical model, the influences of transmissivity, storage coefficient altering with radius, a neighbouring baseload borehole and a distant unconfined boundary are each considered. The baseload borehole is shown to have a significant effect on both abstraction and recovery response for the 3‐day test, while both the baseload borehole and the unconfined boundary modify the response for the 71‐day test.