Permeability of soilslaboratory testempirical correlationcoefficient of uniformitysafetywell graded soilCoefficient of permeability (k) values can be determined using a variety of on-site and laboratory methods. Indirect inference from the grading curve is a standard method used to determine the k factor...
Consequently, values of relative permeability change by changing the rock type or the fluid. Also, relative permeability is defined as the ratio between the permeability of any medium compared to the permeability of vacuum or air. The relative permeability of air = 1. Relative permeability does ...
Permeability of well graded soils 来自 Semantic Scholar 喜欢 0 阅读量: 17 作者: L Nagy 摘要: Coefficient of permeability (k) values can be determined using a variety of on-site and laboratory methods. Indirect inference from the grading curve is a standard method used to determine the k ...
Chapter 2 Permeability of Soil 2.1 Introduction Soils are assemblages of solid particles with interconnected voids through which water can flow from a point of high energy to a point of low energy. The study of the flow of water through porous soil media is important in soil mechanics. This ...
This study reinforces the point that the coefficient of permeability of a layered soil system, when the flow is normal to the orientation of the bedding planes, depends upon the relative positioning of the layers with different values of coefficient of permeability in the system. 展开 关键词:...
However, this parameter can be more easily obtained by using permeability tests of saturated soil with different porosity values. A number of test results in the literature are employed to validate the proposed permeability function, and the model prediction exhibits good agreement with the ...
Eqs. (15.33) and (15.34) show that failure to account for the magnetic permeability of soils containing magnetic minerals results in a higher measured permittivity than the true values (Mohamed and Marwan, 2011). The permittivity data must be corrected using magnetic permeability measurements conducte...
Water movement and uptake by roots in a drip-irrigated potato field was studied by combining field experiments, outputs of numerical simulations and summar
This observation is particularly of value as analyses are ex-tended into the unsaturated soil zone.For many geotechnical problems involving unsaturated soils, aknowledge of the pore-water pressures or hydraulic heads is ofprimary interest. These values are relatively insensitive to thesaturated ...
coefficientofpermeabilityatvariouscombinationsofnetnormalstressesandmatricsuction values.Thevolumechangeofthesoilspecimenduringthepermeabilitymeasurementcanalsobemonitored.The performanceofthepermeameterisdemonstratedforagroupoftestsconductedonslurriedspecimensofasiltysand. Keywords:unsaturatedsoil,coefficientofpermeability,...