Evaluation of water retention on the surface of embankment constructed from the carboniferous waste products
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Institute of Environmental Engineering, Polish Academy of Sciences, Marii Skłodowskiej-Curie 34, 41-819 Zabrze, Poland
Institute of Agricultural Environment Protection, University of Agriculture, Grunwaldzka 53, 50-357 Wrocław, Poland
Acceptance date: 2001-02-15
Int. Agrophys. 2001, 15(4): 261–267
On the surfaces of embankments of the Goławiecki stream, constructed by the carboniferous waste products, which were obtained during pit-coal mining at the Piast coal-mine in Bieruń, investigations about evaluation of water retention in surface horizons of the soil were conducted. The experiments were realized on 4 variants: A soil, covered with a (0-2 cm) layer of organic-mineral material; B soil, covered with a (0-2 cm) layer of organic-mineral material with biogel (dose 1); C soil, covered with a (0-2 cm) layer of organicmineral material with biogel (dose 2); D soil without the organicmineral cover. During 2 experimental years in spring and autumn soil samples from several parts of the dike (the southern and northern slope and the top of the dike) were taken for laboratory analyses. Following physical properties were determined: water retention (pF-curve), the saturated hydraulic conductivity coefficient, granulometric composition, the bulk density and the total porosity. Also physico-chemical properties like pH, hydrological acidity and the electric conductivity were determined. The results of the examined water properties of the surface layers of the soil from the embankment show significant differences between the experimental objects.