A confined aquifer has a source of recharge. The hydraulic conductivity of the aquifer is 40 m/day and its porosity is 0.25. The piezometric head in the two wells 1000m apart is 65 m and 60 m respectively from a common data. The average thickness of the aquifer is 25 m and the average width is 4 km. Compute the time of travel from the head of the aquifer to a point 3 km downstream in months. Round off to the nearest whole number. 1 month = 30 days %3D

A confined aquifer has a source of recharge. The hydraulic conductivity of the aquifer is 40 m/day and its porosity is 0.25. The piezometric head in the two wells 1000m apart is 65 m and 60 m respectively from a common data. The average thickness of the aquifer is 25 m and the average width is 4 km. Compute the time of travel from the head of the aquifer to a point 3 km downstream in months. Round off to the nearest whole number. 1 month = 30 days %3D

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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A tube-well of 20 cm of diameter fully penetrate a horizontal, homogeneous and isotropic confined aquifer of infinite horizontal extent. The aquifer is of 30 m uniform thickness. A steady pumping at the rate of 40 litres/s from the well for a long time results in a steady drawdown of 4 m at the well face. The subsurface flow to the well due to pumping is steady, horizontal and Darcian and the radius of influence of the well is 245 m. The hydraulic conductivity of the aquifer (in m/day, round off to integer) is
A tube - well of 20 cm diameter fully penetrates a horizontal, homogenous and isotropic confined aquifer of infinite horizontal extent. The aquifer is of 30 m uniform thickness. steady pumping at the rate of 40 litres/s from the well for a long time results in a steady drawdown of 4 m at the well face. The subsurface flow to the well due to pumping is steady, horizontal and Darcian and the radius of influence of the well is 245 m. The hydraulic conductivity of the aquifer (in m/day, round of to integer) is
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