a) A well for extracting water from a confined aquifer was installed at a site. The top of the confined aquifer was at a depth of 10 m and the bottom was at a depth of 17 m. When the well was first installed the water level rose to 3 m below the ground surface, prior to the installation of any pumps. Observation wells were installed 50 m and 150 m radially out from the centre of the extraction well. i) At a pumping rate of 3000 litres/hour the water levels in the observation wells were 5 m and 4 m below the ground surface, respectively. Calculate the coefficient of permeability of the confined aquifer. ii) Calculate the radius of influence of the extraction well. iii) What is the minimum depth that the observation wells would have to be installed to?

a) A well for extracting water from a confined aquifer was installed at a site. The top of the confined aquifer was at a depth of 10 m and the bottom was at a depth of 17 m. When the well was first installed the water level rose to 3 m below the ground surface, prior to the installation of any pumps. Observation wells were installed 50 m and 150 m radially out from the centre of the extraction well. i) At a pumping rate of 3000 litres/hour the water levels in the observation wells were 5 m and 4 m below the ground surface, respectively. Calculate the coefficient of permeability of the confined aquifer. ii) Calculate the radius of influence of the extraction well. iii) What is the minimum depth that the observation wells would have to be installed to?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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