The following article will guide you about how to determine the permeability of soil. Constant Head Permeability Test: Permeability of coarse-grained soils having high permeability is determined in the laboratory by the constant head permeability test. The principle of the test is to measure the volume of water flowing through a soil specimen in a given time and determine the [...]
In this article we will discuss about the:- 1. Meaning of Permeability 2. Darcy's Law for Determining the Permeability of Soils 3. Coefficient 4. Factors 5. Determination. Meaning of Permeability: The velocity of water flowing through a soil mass between any two points depends directly on the hydraulic gradient or the head loss per unit length between the two points. [...]
The various types of in situ tests commonly used to determine the permeability of aquifers in the field are: 1. Pumping-out test. 2. Pumping-in Test. Compared with laboratory methods, field methods give a more reliable value of permeability, since the soil is tested in situ without disturbing its structure and void ratio. The value of permeability thus obtained is an [...]