A confined aquifer has a thickness of 30m (m) and is fully penetrated by well where the aquifer is pumped at the rate of 500 litres per second. The groundwater thickness (H₁) is 50 m. The drawdown measured in two observation wells located at distance of 10 m and 100 m from the well are 7.5 m and 0.5m respectively. Determine the average hydraulic conductivity of the aquifer. At what distance from the well the drawdown is insignificant i.e. is zero (R

A confined aquifer has a thickness of 30m (m) and is fully penetrated by well where the aquifer is pumped at the rate of 500 litres per second. The groundwater thickness (H₁) is 50 m. The drawdown measured in two observation wells located at distance of 10 m and 100 m from the well are 7.5 m and 0.5m respectively. Determine the average hydraulic conductivity of the aquifer. At what distance from the well the drawdown is insignificant i.e. is zero (R

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter6: Hydraulic Conductivity

Section: Chapter Questions

Problem 6.15P

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A confined aquifer has a thickness of 30 m and is fully penetrated by well where the aquifer is pumped at the rate of 500 litres per second. The ground thickness (h1) is 50M .The drawdown measured in two observation wells located at distance of 10 m and 100 m from the well are 7.5 m and 0.5 m respectively. Determine the average hydraulic conductivity of the aquifer. At what distance from the well the drawdown is insignificant i.e. is zero.
A pump well is dug through a confined aquifer having a thickness of 32 meters. The piezometric surface of the aquifer is 18 meters measured from the top impermeable layer. The first observation well is 75 feet directly west of the pump well and the second observation well is 75 feet directly north of the first observation well. Determine the hydraulic conductivity of the aquifer if it supplies a discharge of 10 liters per second and the drawdown of the observation wells are 13 feet and 23 feet.
An confined aquifer has a thickness of 30m. a fully penetrating 20cm diameter well in this aquifer is pumped at a rate of 35 lit/s. the drawdown measured in two observation well located at distance of 10m and 100m from the well are 7.5m and 0.5m respectively. Determine the average hydraulic conductivity of the aquifer. At what distance from the well the drawdown is insignificant?
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