A pumping test was performed in a well penetrating a confined aquifer to evaluate the coefficient of permeability of the soil in the aquifer. When equilibrium flow was reached, the following data were obtained: 1. Equilibrium discharge of water from the well is 200 cm³/sec. 2. Water levels (hi and h2) = 6 and 4.5m and at distances from the well (ri and r2) of 36 and 18m, respectively. 3. Thickness of aquifer =5m. Find the coefficient of permeability (cm/day) dr Piezometric level Piezometric level before pumping during pumping h dh

A pumping test was performed in a well penetrating a confined aquifer to evaluate the coefficient of permeability of the soil in the aquifer. When equilibrium flow was reached, the following data were obtained: 1. Equilibrium discharge of water from the well is 200 cm³/sec. 2. Water levels (hi and h2) = 6 and 4.5m and at distances from the well (ri and r2) of 36 and 18m, respectively. 3. Thickness of aquifer =5m. Find the coefficient of permeability (cm/day) dr Piezometric level Piezometric level before pumping during pumping h dh

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

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 pumping test was performed in a well penetrating a confined aquifer to evaluate the coefficient
of permeability of the soil in the aquifer. When equilibrium flow was reached, the following data
were obtained:
1. Equilibrium discharge of water from the well is 200 cm³/sec.
2. Water levels (h and h2) = 6 and 4.5m and at distances from the well (ri and r2) of 36 and
18m, respectively.
3. Thickness of aquifer =5m.
Find the coefficient of permeability (cm/day)
dr
Piezometric level
Piezometric level
before pumping
during pumping
h dh

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