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Saturday, 12 January 2019

Permeability

The property of a porous material which permits the passage or seepage of water through its interconnecting voids.
Darcy’s Law
In 1856 Darcy studied &demonstrated experimentally the velocity of laminar flow through homogeneous soil mass, which states that “The rate of flow or the discharge per unit time is proportional to the hydraulic gradient.
q = k. i. A
Where,       q = discharge per unit time.
A= Total c/s area of soil mass Perpendicular to flow.
i = hydraulic gradient.
k = Darcy’s coefficient of permeability.

Important Definition