Influence of soil cover on surface runoff, infiltration, and percolation

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

Influence of soil cover on surface runoff, infiltration, and percolation

Popis výsledku v původním jazyce

The main goal of this study was to determine the effect of surface cover on soil percolation. Many previous papers have focused on reducing soil loss on steep slopes using geotextiles, but not on the intensity of percolation. Reducing surface runoff can help reduce soil loss, but increased infiltration can also increase the risk of slope collapse. For this research, Enkamat 7220 (plastic geotextile) in six different cover variations was used, as well as bare soil for comparison. A laboratory rainfall simulator with variable rainfall intensity and adjustable slope was used for the experiments, which were conducted at rainfall intensities of 60-160 mm/h. The results showed that the lowest soil percolation occurred on the plot with bare soil and on the plot where the entire surface was covered with geotextile and fully backfilled, likely due to soil compaction. The highest percolation was observed on the plot where the geotextile was fixed on top of the surface using ground anchors. The hypothesis that percolation at the foot of the slope is higher than at the top of the slope due to surface and subsurface flow was also confirmed. In future studies on the effectiveness of geotextiles, additional measurements of percolation would be beneficial for a deeper understanding of these processes. This research was supported by the research projects QK22010261, SS05010180 and CTU in Prague, grant No. SGS OHK1-086/23/11143.

Název v anglickém jazyce

Influence of soil cover on surface runoff, infiltration, and percolation

Popis výsledku anglicky

The main goal of this study was to determine the effect of surface cover on soil percolation. Many previous papers have focused on reducing soil loss on steep slopes using geotextiles, but not on the intensity of percolation. Reducing surface runoff can help reduce soil loss, but increased infiltration can also increase the risk of slope collapse. For this research, Enkamat 7220 (plastic geotextile) in six different cover variations was used, as well as bare soil for comparison. A laboratory rainfall simulator with variable rainfall intensity and adjustable slope was used for the experiments, which were conducted at rainfall intensities of 60-160 mm/h. The results showed that the lowest soil percolation occurred on the plot with bare soil and on the plot where the entire surface was covered with geotextile and fully backfilled, likely due to soil compaction. The highest percolation was observed on the plot where the geotextile was fixed on top of the surface using ground anchors. The hypothesis that percolation at the foot of the slope is higher than at the top of the slope due to surface and subsurface flow was also confirmed. In future studies on the effectiveness of geotextiles, additional measurements of percolation would be beneficial for a deeper understanding of these processes. This research was supported by the research projects QK22010261, SS05010180 and CTU in Prague, grant No. SGS OHK1-086/23/11143.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10501 - Hydrology

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

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