Results 261 to 270 of about 10,115 (302)

Saturated Soil Hydraulic Conductivity

2016
This chapter deals primarily with field measurement of saturated soil hydraulic conductivity, K fs . Well or borehole permeameter techniques, specifically developed for subsurface soil measurements above the water table, are initially illustrated. Particular attention is paid to establishment of steady flow under constant head in an uncased borehole ...
Rafael Angulo-Jaramillo, Vincenzo Bagarello, Massimo Iovino, Laurent Lassabatere   +3 more
openaire   +1 more source

Study of Variation of Saturated Hydraulic Conductivity with Time

Journal of Irrigation and Drainage Engineering, 2008
The variation of the saturated hydraulic conductivity with time, as a function of temperature, has been studied involving field measurement at the College of Aboureyhan Research farm. The College of Aboureyhan is a part of the University of Tehran and the above-mentioned farm is located in the lowland of the southeast of Tehran, Iran.
Abdullah Darzi, Aghil Yari, Hasan Bagheri, Gholamali Sabe, Ruhullah Yari   +4 more
openaire   +1 more source

Predicting the saturated hydraulic conductivity of soils: a review

Bulletin of Engineering Geology and the Environment, 2012
This paper examines and assesses predictive methods for the saturated hydraulic conductivity of soils. The soil definition is that of engineering. It is not that of soil science and agriculture, which corresponds to “top soil” in engineering. Most predictive methods were calibrated using laboratory permeability tests performed on either disturbed or ...
openaire   +2 more sources

Soil structure and the saturated hydraulic conductivity of subsoils

Soil and Tillage Research, 2004
Abstract The saturated hydraulic conductivity, K sat , was measured on soil samples collected from the plough layer and the subsoil. A range of naturally occurring soil bulk densities was obtained by sampling in different years, with different crops and within and without wheel-tracks, etc. It was found that, for the plough layer, quite good linear
A.R. Dexter, E.A. Czyż, O.P. Gaţe
openaire   +1 more source

Saturated hydraulic conductivity of cemented paste backfill

Minerals Engineering, 2009
Abstract The key design parameters of cemented paste backfill (CPB, a mix of tailings, water and binder) are strongly influenced by its saturated hydraulic conductivity (permeability). However, our understanding of the permeability of CPBs, as well as factors that affect it and its evolution with time, is limited. Hence, a laboratory investigation is
M. Fall, D. Adrien, J.C. Célestin, M. Pokharel, M. Touré   +4 more
openaire   +1 more source

Measuring Saturated Hydraulic Conductivity in Soil [PDF]

, 2017
Provides guidance on ways to measure the movement of water through saturated soils in relation to treatment of sewage in wastewater drainfields.
Thomas, Steven K., Conta, Jay F., Severson, Erik D., Galbraith, John M.   +3 more
openaire  

Contribution to the determination of the hydraulic conductivity in the saturation of soil

Arabian Journal of Geosciences, 2015
This paper focused on the development of a model that helps the estimation of hydraulic conductivity at saturation from the data on the constituents of the soil. A statistical analysis of Canadian soil samples allowed a better understanding of the phenomena involved and helped in the development of a methodological approach that determines the main ...
Dorsaf Ben Othman, Mohamed Fadhel Megdiche, Moncef Gueddari   +2 more
openaire   +1 more source

Centrifugal techniques for measuring saturated hydraulic conductivity

Water Resources Research, 1991
Centrifugal force is an alternative to large pressure gradients for the measurement of low values of saturated hydraulic conductivity (Ksat). With a head of water above a porous medium in a centrifuge bucket, both constant‐head and falling‐head measurements are practical at forces up to at least 1800 times normal gravity.
John R. Nimmo, Karen A. Mello
openaire   +1 more source

SCALING OF SATURATED HYDRAULIC CONDUCTIVITY: A COMPARISON OF MODELS

Soil Science, 2000
This study compares eight models for scaling soil-saturated hydraulic conductivity, K s , using a database of 402 data sets collected from 25 sources in the literature. The database includes data regarding K s , particle size distribution, soil bulk density, and soil particle density, with textures ranging from sand to heavy clay.
J. Zhuang, K. Nakayama, G. R Yu, T. Miyazaki   +3 more
openaire   +1 more source

Evaluating the Saturated and Unsaturated Hydraulic Conductivity of Soils

1981
A method of calculating the saturated and unsaturated hydraulic conductivities of soils and similar porous materials based on the pore size distribution was shown to predict the experimentally measured values adequately. For coarse-textured soil materials or materials with a relatively narrow range of pore size, only one matching factor is required to ...
A Elzeftawy, K Cartwright
openaire   +1 more source