Experimental Research on Backward Erosion Piping Progression

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F23%3APU148816" target="_blank" >RIV/00216305:26110/23:PU148816 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2073-4441/15/15/2749" target="_blank" >https://www.mdpi.com/2073-4441/15/15/2749</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/w15152749" target="_blank" >10.3390/w15152749</a>

Result language

angličtina

Original language name

Experimental Research on Backward Erosion Piping Progression

Original language description

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.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/TH04030087" target="_blank" >TH04030087: Tools for levees system management</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Name of the periodical

Water

ISSN

2073-4441

e-ISSN

—

Volume of the periodical

15

Issue of the periodical within the volume

15

Country of publishing house

CH - SWITZERLAND

Number of pages

17

Pages from-to

1-17

UT code for WoS article

001045720100001

EID of the result in the Scopus database

2-s2.0-85167707444