Pore water pressure profile development through soil water characteristics curve determination utilizing the continuous pressurization method

Optimization of a pressurization methodology for extracting pore-water.

Sediment toxicity can be assessed by conducting pore-water toxicity assays with standard water column organisms. Several methods have been developed for sampling pore-water. Centrifugation and pressurization methods are recommended when large volumes of pore-water are required to perform toxicity assays. Nevertheless, these methods involve sediment transportation and storage in laboratory, whic...

Equations for the soil-water characteristic curve

The soil-water characteristic curve can be used to estimate various parameters used to describe unsaturated soil behaviour. A general equation for the soil-water characteristic curve is proposed. A nonlinear, least-squares computer program is used to determine the best-fit parameters for experimental data presented in the literature. The equation is based on the assumption that the shape of the...

Soil water thermodynamic to unify water retention curve by pressure plates and tensiometer

Erik Braudeau*, Gaghik Hovhannissian, Amjad T. Assi and Rabi H. Mohtar* 1 Qatar Environment and Energy Research Institute, Qatar Foundation, Doha, Qatar 2 Pédologie Hydrostructurale, Institut de Recherche pour le Développement France Nord, Institut de Recherche Pour le Développement, Bondy, France 3 Unité Mixte de Recherche 242, Institut d’Ecologie et des Sciences de l’Environnement de Paris, I...

Determination of unsaturated hydraulic conductivity by internal drainage assuming a uniform soil water profile

Estimation of pore water pressure in the body of earth dams during construction with intelligent models

One of the basic measures in managing the stability of earth dams is to accurately estimate the amount of pore water pressure in the body of the dam during and after its construction. In this study, three different models of artificial neural network (ANN), adaptive neural-fuzzy inference system (ANFIS) and gene expression programming (GEP) to estimate the pore water pressure in the body of Kab...