Actual values of saturated hydraulic conductivity of channel bed silt and its distribution along Komárňanský channel

Year, pages: 2020, 98 - 105

This contribution deals with the evaluation of channel bed silt permeability along the Komárňanský channel based on the measurements during the year 2019. Komárňanský channel is the largest one from three great channels of channel network at Žitný ostrov area. The channel bed silt permeability is expressed by parameter of its saturated hydraulic conductivity. This paper describes the current state of channel bed silt distribution along this channel during the year 2019 and simultaneously brings the values of saturated hydraulic conductivity of channel bed silt. The channel bed silts were extracted and obtained by two ways, as a disturbed samples and as an undisturbed samples. The samples were taken in each selected profiles of channel in three layers – top, middle and bottom layer of channel bed silt. The selection of sampling was made in dependency on channel bed silt thickness in the measured profile. The values of channel bed silt saturated hydraulic conductivity from disturbed samples Kd were calculated according to empirical formulas of Bayer-Schweiger and Špaček. The valid values Kd reached from 1.09 x 10-08 – 1.98 x 10-04 m s-1. The values of channel bed silt saturated hydraulic conductivity from undisturbed samples Ku were determined by the laboratory falling head method. The acquired values Ku for Komárňanský channel reached from 3.73 x 10-08 – 2.01 x 10-05 m s-1. The current state of longitudinal distribution of channel bed silt along this channel was demonstrated in the paper graphically and values of saturated hydraulic conductivity were demonstrated numericall

Dulovičová, R., Schügerl, R., Velísková, Y. 2020. Actual values of saturated hydraulic conductivity of channel bed silt and its distribution along Komárňanský channel. In Acta Hydrologica Slovaca, vol. 21, no.1, pp. 98-105. 2644-4690. DOI: https://doi.org/10.31577/ahs-2020-0021.01.0012

Dulovičová, R., Schügerl, R., Velísková, Y. (2020). Actual values of saturated hydraulic conductivity of channel bed silt and its distribution along Komárňanský channel. Acta Hydrologica Slovaca, 21(1), 98-105. 2644-4690. DOI: https://doi.org/10.31577/ahs-2020-0021.01.0012

Publisher: Institute of Hydrology SAS, Dúbravská cesta 9, 841 05 Bratislava, Slovakia

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