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ŘÍHA, J. PETRULA, L.
Originální název
Experimental Research on Backward Erosion Piping Progression
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Internal erosion is caused by seepage body forces acting on the soil particles. One of the most dangerous modes of internal erosion at hydraulic structures is backward erosion piping, which usually initiates at the downstream end of a seepage path, e.g., at the downstream toe of the dam. The progress of backward erosion and the development of erosion pipes were tested in a newly developed laboratory device for three types of sand with grain sizes of 0/2, 0.25/2, and 0.25/1. The piezometric head along the gradually developing seepage “pipe” was observed by seventeen piezometers and seven pressure sensors. The seepage amount was measured by the volumetric method. The critical hydraulic gradient was determined and related to the soil porosity. The progression of the seepage path and relevant characteristics such as the piezometric and pressure heads and the amount of trapped sediment were observed by two synchronous cameras. Based on the analysis of the results of 42 tests, a new empirical formula for the backward erosion rate was proposed. The characteristics of lateral erosion were evaluated and compared with the available literature, which provided reasonably good agreement.
Klíčová slova
seepage; experimental research; backward erosion piping; lateral erosion; critical hydraulic gradient
Autoři
ŘÍHA, J.; PETRULA, L.
Vydáno
29. 7. 2023
Nakladatel
MDPI
Místo
Swiezerland
ISSN
2073-4441
Periodikum
Water
Ročník
15
Číslo
Stát
Švýcarská konfederace
Strany od
1
Strany do
17
Strany počet
URL
https://www.mdpi.com/2073-4441/15/15/2749
Plný text v Digitální knihovně
http://hdl.handle.net/11012/213829
BibTex
@article{BUT184386, author="Jaromír {Říha} and Lubomír {Petrula}", title="Experimental Research on Backward Erosion Piping Progression", journal="Water", year="2023", volume="15", number="15", pages="1--17", doi="10.3390/w15152749", issn="2073-4441", url="https://www.mdpi.com/2073-4441/15/15/2749" }