A well was constructed to pump water from a confined aquifer. Two observation wells were constructed distances of 60m and 220m respectively. At a steady pumping rate of 0.15m^3/min, the drawdown in the observation wells were respectively equal to 1.5m and 5.2m. Diameter of the test well is 0.75m and thickness of confined aquifer is 15m. 1. Determine the hydraulic conductivity of the soil in m/min. 2. Determine the drawdown at the test well in m. 3. What is the value of the transmissivity of the confined aquifer in m^2/day?

A well was constructed to pump water from a confined aquifer. Two observation wells were constructed distances of 60m and 220m respectively. At a steady pumping rate of 0.15m^3/min, the drawdown in the observation wells were respectively equal to 1.5m and 5.2m. Diameter of the test well is 0.75m and thickness of confined aquifer is 15m. 1. Determine the hydraulic conductivity of the soil in m/min. 2. Determine the drawdown at the test well in m. 3. What is the value of the transmissivity of the confined aquifer in m^2/day?

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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Concept explainers

Field applications of hydraulic conductivity

Hydraulic conductivity is one of the hydraulic properties of soil defined as a measurement of the ability of a porous medium to permit water movement or fluid flow through it. It is denoted by the letter K. It is influenced by the density and viscosity of the fluid. It is also called permeability. Hydraulic conductivity is defined as the ratio of velocity to the hydraulic gradient. The different methods used to determine the hydraulic conductivity are laboratory methods (constant head permeability tests and falling head tests), in-situ field methods (pumping in and pumping out tests), small scale field tests (infiltration tests and slug tests), and indirect methods such as estimation from grain size, consolidation test data, and horizontal capillary test. The pedotransfer function (PTF) method is a specific empirical estimating approach employed in the soil sciences is also used to determine the hydraulic conductivity of the soil.

Question

A well was constructed to pump water from a confined aquifer. Two observation wells were constructed
distances of 60m and 220m respectively. At a steady pumping rate of 0.15m^3/min, the drawdown in
the observation wells were respectively equal to 1.5m and 5.2m. Diameter of the test well is 0.75m and
thickness of confined aquifer is 15m.
1. Determine the hydraulic conductivity of the soil in m/min.
2. Determine the drawdown at the test well in m.
3. What is the value of the transmissivity of the confined aquifer in m^2/day?

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