Soilmech Permeability

In: Science

Submitted By schoolpurpose25
Words 277
Pages 2
Introduction
Permeability is the property of soil that permits the passage of water under a gradient of force. It characterizes the ability of porous media to be permeated, and is independent of the properties of the permeating liquid.
During permeability test on a sample of soil, the researchers will able to get hydraulic gradient, discharge velocity, flow rate, seepage velocity, hydraulic conductivity, absolute permeability, transmissibility of soil stratum. Hydraulic gradient is the slope of water table. It is the change in hydraulic head inversely proportional to the change in distance. Discharge velocity is the coefficient of permeability directly proportional to hydraulic conductivity. Flow rate is the cross-sectional area directly proportional to velocity. Seepage velocity is how fast the flow of water in an empty spaces at soil. It is the discharge velocity inversely proportional to porosity. Researchers can get hydraulic conductivity through laboratory test constant head test. It is also known as coefficient of permeability. Every range of coefficient of permeability is equivalent to specific type of soil. Absolute permeability is the coefficient of permeability directly proportional to viscosity of fluid over unit weight of water. And transmissibility of soil stratum is the average coefficient of permeability of soil stratum directly proportional to thickness of aquifers Abstract
In this topic, the importance of permeability in earth science is to determine on how water will behave in soil by conducting laboratory experiments. It determines how easily fluid will move through the pores in the material from an area of higher pressure to lower pressure.
http://www.planetseed.com/faq/porosity/why-are-ground-porosity-and-permeability-important…...

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