Detail publikace

Experimental Research on Backward Erosion Piping Progression

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

15

Stát

Švýcarská konfederace

Strany od

1

Strany do

17

Strany počet

17

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"
}