In: Acta Hydrologica Slovaca, vol. 22, no. 1
Renáta Dulovičová - Yvetta Velísková - Radoslav Schügerl
Detaily:
Rok, strany: 78 - 87
Jazyk: eng
Kľúčové slová:
bed silts, disturbed samples, grain size analysis, saturated hydraulic conductivity
URL originálneho zdroja: http://www.ih.sav.sk/ah
O článku:
This paper deals with the comparison of empirical formulas used for computation of saturated hydraulic conductivity values Kd. The disturbed samples of bed silts were obtained from the Komárňanský channel at the Žitný ostrov (ŽO), Slovakia. The bed silts were extracted from three different vertical parts of silt - top, middle and bottom part of silt layer in each selected cross-section profile of the Komárňanský channel. Because the samples are disturbed only the empirical formulas based on the grain size analyses were used. The measurements of silting and the extraction of bed silt samples were carried out in 2019. These measurements were used for calculation of saturated hydraulic conductivity values Kd. In the previous study we calculated the values of saturated hydraulic conductivity for disturbed samples Kd according to Bayer – Schweiger; Špaček I and Špaček II empirical formulas. In this current paper we used other empirical formulas based on the grain size analyses. We selected Hazen I.; Bayer; USBR and Orechova formulas which were in the past used in the software Geofil. These valid values Kd reached from 2.00 x10-10 to 9.07 x 10-06 m s-1. We used the number of valid computed results (count) of Kd to determine the formula´s ability to give results meeting the validity requirements. The recommended formula for calculation of Kd of bed silts in Komárňanský channel based on this criterium is Hazen I., which range is 1.16 x 10-8 to 7.25 x 10-06 m s-1.
O vydaní:
Vydavateľ: Institute of Hydrology SAS, Dúbravská cesta 9, 841 05 Bratislava, Slovakia
Verejná licencia:
