Measurement of Hydraulic Properties in Heterogeneous Soil Close to Saturation

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of Hydraulic Properties in Heterogeneous Soil Close to Saturation

Popis výsledku v původním jazyce

The infiltration outflow experiments were performed in laboratory on large undisturbed soil samples, under conditions close to saturation. The experiments were conducted using an automated experimental set-up, where the inflow and outflow water flux densities, tensiometers readings and the sample weight changes were recorded. The sample was imaged by means of computer tomography (CT). Dye tracer experiment with Brilliant Blue was performed at the end. The regions with the lower brightness represent a higher dye tracer concentration. Dye tracer experiment showed high degree of channeled flow within the sample. 1-D dual permeability numerical simulations were performed. The experimental data, measured on Hupselse Beek fine sand, were used as the reference. The comparison of CT and dye tracer images, of the both soil types, showed clear need for advanced approach in prediction of the unsaturated hydraulic parameters of highly heterogeneous soils.

Název v anglickém jazyce

Measurement of Hydraulic Properties in Heterogeneous Soil Close to Saturation

Popis výsledku anglicky

The infiltration outflow experiments were performed in laboratory on large undisturbed soil samples, under conditions close to saturation. The experiments were conducted using an automated experimental set-up, where the inflow and outflow water flux densities, tensiometers readings and the sample weight changes were recorded. The sample was imaged by means of computer tomography (CT). Dye tracer experiment with Brilliant Blue was performed at the end. The regions with the lower brightness represent a higher dye tracer concentration. Dye tracer experiment showed high degree of channeled flow within the sample. 1-D dual permeability numerical simulations were performed. The experimental data, measured on Hupselse Beek fine sand, were used as the reference. The comparison of CT and dye tracer images, of the both soil types, showed clear need for advanced approach in prediction of the unsaturated hydraulic parameters of highly heterogeneous soils.

Druh

A - Audiovizuální tvorba

CEP obor

DF - Pedologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

ISBN

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Místo vydání

Katlenburg-Lindau

Název nakladatele resp. objednatele

EGS

Verze

Neuveden

Identifikační číslo nosiče

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