QI) An unconfined aquifer has a thickness of 33 m. A fully penetration 20 cm diameter well in the aquifer is pumped at a rate of 33 lit's. The drawdown measured in two observation wells located at a distance of 10 m and 100 m from the well are 7.5 m and 0.5 m respectively. Determine: 1- Sketch the case. 2- the average hydraulic conductivity of the aquifer. 3- At what distance from the well the drawdown is insignificant?

QI) An unconfined aquifer has a thickness of 33 m. A fully penetration 20 cm diameter well in the aquifer is pumped at a rate of 33 lit's. The drawdown measured in two observation wells located at a distance of 10 m and 100 m from the well are 7.5 m and 0.5 m respectively. Determine: 1- Sketch the case. 2- the average hydraulic conductivity of the aquifer. 3- At what distance from the well the drawdown is insignificant?

Structural Analysis

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ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Groundwater Flow

The term groundwater refers to the water which is found beneath the earth's surface. Pores present in the soil and rocks with fractures make a passage for rainwater to enter the earth's surface and deposit as groundwater. The flow nature and direction of groundwater under the earth's surface directly impacts the strength and compressibility of the soil, which reflects its ability to support structural loads.

Question

Q1) An unconfined aquifer has a thickness of 33 m. A fully penetration 20 cm diameter well in
the aquifer is pumped at a rate of 33 lit/s. The drawdown measured in two observation wells
located at a distance of 10 m and 100 m from the well are 7.5 m and 0.5 m respectively.
Determine:
1- Sketch the case.
2- the average hydraulic conductivity of the aquifer.
3- At what distance from the well the drawdown is insignificant?

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