Assignment no. 3 Problem # 1. A 300 mm diameter test well penetrates 24 m. below the static water table. After 24 hours of pumping at 69 liters/sec. The water level in an observation well at a distance of 96m from the test well is lowered 0.60m. And the other observation well at a distance of 34m from the test well, the drawdown is 1.2m. a. Compute the coefficient of permeability of the unconfined aquifer in m/day. b. Compute the transmissibility of the unconfined aquifer in m2/day. C. Compute the transmissibility of a confined aquifer 8m. thick below the unconfined aquifer in m2/day.

Principles of Geotechnical Engineering (MindTap Course List)
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ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
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Chapter7: Permeability
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Assignment no. 3
Problem # 1. A 300 mm diameter test well penetrates 24 m. below the static water table. After 24 hours of
pumping at 69 liters/sec. The water level in an observation well at a distance of 96m from the test well is
lowered 0.60m. And the other observation well at a distance of 34m from the test well, the drawdown is
1.2m.
a. Compute the coefficient of permeability of the unconfined aquifer in m/day.
b. Compute the transmissibility of the unconfined aquifer in m2/day.
Compute the transmissibility of a confined aquifer 8m. thick below the unconfined aquifer
in m2/day.
I.
Transcribed Image Text:Assignment no. 3 Problem # 1. A 300 mm diameter test well penetrates 24 m. below the static water table. After 24 hours of pumping at 69 liters/sec. The water level in an observation well at a distance of 96m from the test well is lowered 0.60m. And the other observation well at a distance of 34m from the test well, the drawdown is 1.2m. a. Compute the coefficient of permeability of the unconfined aquifer in m/day. b. Compute the transmissibility of the unconfined aquifer in m2/day. Compute the transmissibility of a confined aquifer 8m. thick below the unconfined aquifer in m2/day. I.
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