Approfondimenti su alcune tecniche infiltrometriche per la misura delle conducibilità idraulica del suolo saturo

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[automatically translated] In the memory are covered some aspects of the measure in the field of soil saturated hydraulic conductivity, Kfs with infiltrometriche techniques. First, it has been determined the frequency of failures with a type test Two-Ponding-Depth performed with the infiltrometer single-ring (PI). The above rate was higher in two Franco-clayey soils (40%) than in a sandy loam (25%). A high initial water content has been a possible cause of the failure of the measure. The exclusion from the data set of tests which provided the values of the parameter a * falling outside the range 1-100 m-1 was found to only irrelevant in the case in which the quantity of interest is the mean value of Kfs and *. For a Franco-clay soil, the transient technique SFH (Simplified Falling Head) has provided an average value of Kfs not significantly different from that obtained with the most challenging stationary technique, confirmation of interest at the application of a simple transitional approach. The combined use of SFH and PI techniques may prove useful in determining the hydrological response of an area in the early and advanced stages of a process of infiltration in the presence of free water on the surface.
Original languageItalian
Number of pages10
Publication statusPublished - 2010

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