Assessment of hydrodynamic coefficients by using resistivity and pumping test in Chenaneh plain: a case study

Authors

1 Ph.D.Student Department of Geology, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz, Iran

2 Department of Geology, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz, Iran

Abstract

In the current study for achivment of aquifer hydrodynamic parameters, have been used the results of the geoelectric method through resistivity. Available data from observation and exploration wells in the vicinity of existing soundings was applied to verify and compare the final results. In the present study, 66 vertical electrical soundings (VES) were carried out using the Schlumberger array to determine the hydrogeological characteristics of the Chananeh plain in Khuzestan Province. The relationship between the transverse resistance calculated at the site of each sounding and the transmissivity obtained from the pumping test results is linear and shows a 94% coefficient of correlation. Therefore, by extracting the equation between these two parameters, it is possible to calculate the transmissivity at the location of each sounding. Aquifer transmissivity varies from 30 m2/day from sections containing sandy and fine-grained materials until 700 m2/day belonges to sections adjacent to the Karkheh River deposits that is located northeast of the plain , gravel, and sand materials are the result of Bakhtiari conglomerate erosion that is in the northern regions. Specific yield changes based on geoelectric studies and their validation by the pumping test results vary from 0.02 in the west parts to 0.18 in the north parts. Therefore, according to the calculated hydrodynamic coefficients, the northern and northeastern regions of Chananeh plain are in better condition.

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References

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Advanced Applied Geology
Volume 14, Issue 2
In progress
June 2024
Pages 390-409

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