Problems An aquifer of 20m average thickness is overlain by an impermeable layer of 30m thickness. A test well of 0.5m diameter and two observation wells at a distance of 10m and 60m from the test well are drilled through the aquifer. After pumping at a rate of 0.1 m³/s for a long time, the following draw downs are stabilized in these wells. First observation well, 4m, second observation well, 3m. Show the arrangement in a diagram. Determine the coefficient of Permeability and the drawdown in the test well.
Problems An aquifer of 20m average thickness is overlain by an impermeable layer of 30m thickness. A test well of 0.5m diameter and two observation wells at a distance of 10m and 60m from the test well are drilled through the aquifer. After pumping at a rate of 0.1 m³/s for a long time, the following draw downs are stabilized in these wells. First observation well, 4m, second observation well, 3m. Show the arrangement in a diagram. Determine the coefficient of Permeability and the drawdown in the test well.
Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter7: Permeability
Section: Chapter Questions
Problem 7.22P: Refer to Figure 7.24. The following data were collected during the field permeability measurement of...
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