Piping

French translation: erosion channels / renard hydraulique

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)

English term or phrase:	Piping
French translation:	erosion channels / renard hydraulique
Entered by:	John ANTHONY

11:06 Apr 26, 2015

English to French translations [PRO]
Tech/Engineering - Construction / Civil Engineering / levee construction

English term or phrase: Piping

Hydraulic failure (ULS HYD): conditions that might cause ***piping*** (after BS EN1997-1:2004)

John ANTHONY KudoZ activity Questions: 45 (6 open) (3 without valid answers) Answers: 314 France
Local time: 11:54

erosion channels

Explanation:
"Piping and hydraulic fracturing (heave) are phenomena which can threaten the stability of flood defences. These phenomena can arise when, in the case of large-scale hydraulic head, particles of soil in layers of earth which are susceptible to erosion are transported underneath the flood defence by the seepage flow, as a consequence of which erosion channels are created under the flood defence (piping), or mutual effective stress is lost in the soil (heave) in the upward seepage flow behind the hydraulic structure or cut-off wall".

http://repository.tudelft.nl/assets/uuid:f6d03006-7744-452e-...

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Note added at 1 hr (2015-04-26 12:43:54 GMT)
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Further along in the same document as my previous reference (on page 11) there is a precise definition:

Piping
"the creation of hollow spaces under a dike or hydraulic structure, as a consequence of a concentrated seepage flow carrying ground particles; also called seepage erosion. In the factual definition, piping is the forming of an open channel from entry point to exit point"

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Note added at 1 hr (2015-04-26 12:52:53 GMT)
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If this is English to French I suggest "renard"; see:

"Upward flow of water in a sandy formation caused by an imbalance of hydrostatic pressure resulting from rising waters in a nearby stream or from removing the overburden during excavations".
"Mouvement ascendant de l'eau dans une formation sableuse provoqué par un déséquilibre de la pression hydrostatique résultant d'une montée des eaux d'un cours d'eau voisin ou d'une décompression provoquée par des travaux d'excavation."
http://www.granddictionnaire.com/ficheOqlf.aspx?Id_Fiche=265...

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Note added at 1 hr (2015-04-26 12:54:24 GMT)
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see also IATE and Termium for confirmation of my suggestion.

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Note added at 2 hrs (2015-04-26 13:55:42 GMT)
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re: Quebec usage, IATE has several European sources of references for its use.

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Note added at 22 hrs (2015-04-27 10:00:51 GMT)
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I can either hide this answer and repost a new one with 'renard' but we would lose the discussion, or you can choose this answer and enter 'renard' as the glossary entry.

Selected response from:

Catharine Cellier-Smart
Reunion
Local time: 13:54

Grading comment

4 KudoZ points were awarded for this answer

Summary of answers provided

4 +2

tunnel d'érosion régressive

mchd

érosion interne

kashew

renard hydraulique

HERBET Abel

3 +2

erosion channels

Catharine Cellier-Smart

1 -1

TUYAUTERIE ...

Jean-Claude Gouin

Discussion entries: 6

Answers

1 hr confidence:

peer agreement (net): -1

TUYAUTERIE ...

Explanation:
depending what comes after piping ... We need more context ...

Jean-Claude Gouin
Canada
Local time: 05:54
Native speaker of:

French
PRO pts in category: 12

Notes to answerer

Asker: The hydraulic failure mechanisms detailed in Eurocode 7 also include internal erosion and piping. Figure 9.60, taken from Eurocode 7, indicates conditions in which seepage and piping may occur beneath a levee. In this case, Eurocode 7 requires that the design of a filter system is carried out and appropriate measures are taken to prevent internal erosion. note Piping and internal erosion can occur when the impervious layer has localised defects that allow concentrated seepage to exit or the impervious layer is discontinous allowing the pervious layer to exit at the ground surface. Designers should consider such possibilities and should draw on local knowledge and an understanding of the characteristics of the impervious layer when making such assessments. Figure 9.60 Hydraulic failure (ULS HYD): conditions that might cause piping (after BS EN1997-1:2004) Does that make any sense to you...?

5 hrs confidence:

piping érosion interne

Explanation:
http://www.cfms-sols.org/…df.php?file=3317-3320.pdf
3317. Identification du risque d'érosion interne sur les digues de l'Isère et du Drac. Identification of erosion risk on the Isère and Drac river levees. Monnet J., Plé ...

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Note added at 5 heures (2015-04-26 16:15:56 GMT)
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http://en.wikipedia.org/wiki/Internal_erosion
Internal erosion of soil particles from within a dam by water that seeps ... Internal erosion manifests by the migration of soil particles by suffusion or piping. Piping ...

kashew
France
Local time: 11:54
Specializes in field
Native speaker of:

English
PRO pts in category: 229

4 hrs confidence:

peer agreement (net): +2

piping tunnel d'érosion régressive

Explanation:
forme particulière d'érosion qui conduit à la formation d'un tunnel en forme de tuyau

http://rougeron.famille.free.fr/Bois EC5 - LP/EC intégraux/d...

Voir pages 94 et 98

NOTE 4 La rupture par érosion régressive est une forme parti
culière de rupture par érosion interne, par exemple d’un
réservoir d’eau où l’érosion commence à la surface puis régres
se jusqu’à ce qu’un tunnel en forme de tuyau se forme dans
la masse du sol ou entre le sol et une fondation ou à l’inte
rface entre des couches de sols
cohérent et non cohérent. La
rupture se produit dès que l’extrémité amont du
tunnel érodé atteint le fond du réservoir.

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Note added at 5 hrs (2015-04-26 16:25:38 GMT)
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https://books.google.fr/books?id=Hl6P_hC4gAkC&pg=PA197&lpg=P...

Quelques informations complémentaires sur les travaux ultérieurs pour y remédier, si votre texte parle également de cela.

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Note added at 5 hrs (2015-04-26 16:29:08 GMT)
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https://books.google.fr/books?id=wESwAgAAQBAJ&pg=PA282&lpg=P...

Autre terme utilisé dans cet ouvrage : érosion de conduit

mchd
France
Local time: 11:54
Specializes in field
Native speaker of: French
PRO pts in category: 58

Notes to answerer

Asker: Excellent... Will keep you posted !

11 hrs confidence:

piping renard hydraulique

Explanation:
http://www.microbarrage.fr/outils_hydrogeologie_renard.php

HERBET Abel
Local time: 11:54
Specializes in field
Native speaker of: French
PRO pts in category: 79

1 hr confidence:

peer agreement (net): +2

erosion channels

Catharine Cellier-Smart
Reunion
Local time: 13:54
Native speaker of: English
PRO pts in category: 4

Notes to answerer

Asker: That's what I more or less believed, since I don't think it has anything to do with "pipes"... I was just trying to figure out the equivalent in French, which I just could not find anywhere on the web ! Would you call it "canaux d'érosion" for instance ?

Asker: Catharine, my only slight worry is that the term "renard" comes from Quebec, and we all know that there are typical technical terms in various French-speaking countries. I have checked your website of reference, which is perfect. I will try tomorrow to get more information from a specialised French civil engineering business, and will definitely keep you posted. MANY THANKS anyway, and thank you, Tony, as clever as ever... although I tend to believe that "heaving" is what I would describe as "une poussée verticale" caused by the variation of the soils condition under the foundations

Asker: You were by far the quickest to suggest "renard", so I wish you would enter that as a formal answer so I can give you the points if I choose to go with that word...

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French translation: erosion channels / renard hydraulique

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