A well penetrates into an unconfined aquifer having a saturated depth 100 meters. In the first case, the discharge is 250 liters per minute at 12 meters drawdown. Estimate the discharge when the drawdown is 18. For both cases taken the equal radius of influence and coefficient of permeability.

A well penetrates into an unconfined aquifer having a saturated depth 100 meters. In the first case, the discharge is 250 liters per minute at 12 meters drawdown. Estimate the discharge when the drawdown is 18. For both cases taken the equal radius of influence and coefficient of permeability.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Seepage

Section: Chapter Questions

Problem 7.6P

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Concept explainers

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.

Question

A well penetrates into an unconfined aquifer having a saturated depth 100 meters. In the first case,
the discharge is 250 liters per minute at 12 meters drawdown. Estimate the discharge when the
drawdown is 18. For both cases taken the equal radius of influence and coefficient of permeability.

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