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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Water engineering : Evaluation of pumping test data using analytical and numerical methods
Evaluation of pumping test data using analytical and numerical methods
Author : SERDAR KORKMAZ(1), GÖKÇEN TÜRKKAN ERYILMAZ(2)
ABSTRACT
In this study, the well performance and near-well hydraulic conductivity are determined through analytical and numerical
methods applied to water level data obtained from pumping tests. For this purpose, a well was drilled in an unconfined
aquifer in Bursa Küçük Sanayi region. In the well, several pumping tests, namely, step-drawdown test, recovery test and
multirate pumping test were performed. Hantush-Bierschenk and Rorabaugh methods were applied to the data from stepdrawdown
tests and discharge-drawdown curves were obtained. On the other hand, recovery test and multirate test were
performed to determine the hydraulic conductivity. MODFLOW software, which solves groundwater flow problems using
method of finite differences, was used for numerical modeling. In MODFLOW, simulations of the pumping tests were made
for various cases related to grid resolution and specific yield. The discharge-drawdown curve of MODFLOW was
compared to those obtained from analytical solutions and a good correspondance was observed. In addition to this,
multirate pumping test modeled in MODFLOW yielded a similar hydraulic conductivity as the analytical solution.
File Size : 276,960 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Water engineering
Date Published : 18/08/2015
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