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English to French translations [PRO]
Tech/Engineering - Transport / Transportation / Shipping / voies ferrées | | English term or phrase: ballast pocket | The soil moves outward and upward and cross-level develops in the track. This failure mode is usually apparent from soil heave along the track shoulders. The rotational movement of the subgrade and addition of ballast during resurfacing create a depression known as a ballast pocket below the track.
poche de ballast ? |
|  Jeanne TalconeKudoZ activityQuestions: 732 ( 6 open) ( 47 without valid answers) ( 6 closed without grading) Answers: 0
| Local time: 05:40
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| | créations de poches dans le ballast | Explanation:
le ballast qui constitue l'assise des voies est constitué de gros gravier compacté. Il peut se créer des poches (vides) dans le ballast, qui peuvent affecter la stabilité de la voie.
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Note added at 18 mins (2010-12-07 15:40:45 GMT)
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Les "compartiments de ballast" concernent les navires pétroliers plutôt que les voies ferrées :
"Exigences en matière d'équipement des navires
Tout pétrolier neuf transportant du brut et jaugeant plus de 20.000 tonneaux de
poids sec doit être équipé de compartiments de ballast</>complètement séparés des
citernes contenant la cargaison ; cette disposition a remplacé une pratique ancienne qui consistait à remplir les citernes renfermant la cargaison avec l'eau de lest, entraînant le mélange des résidus de pétrole brut avec l'eau. Les nouveaux navires-citernes sont également tenus de recourir à la technique du lavage au pétrole brut pour nettoyer les compartiments contenant la cargaison, ce qui a réduit les rejets d'eau polluée d'hydrocarbures provenant des opération de nettoyage des citernes."
http://www.oecd.org/dataoecd/14/6/2386739.pdf |
| Selected response from:
FX Fraipont
Belgium
Local time: 05:40
| Grading comment | 4 KudoZ points were awarded for this answer |
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| Discussion entries: 0 |
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Automatic update in 00:
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14 mins confidence:   peer agreement (net): +1
| Reference: A definition:
Reference information:
ballast pocket: a depression that is formed beneath the ballast layer by penetration of ballast particles into the subgrade and that tends to collect moisture.
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Note added at 2 heures (2010-12-07 17:26:49 GMT)
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"below the track" isn't very explicit: is it the sleeper underside (voids/les vides de FX-F) or further down?
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Note added at 2 heures (2010-12-07 17:31:16 GMT)
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"cross-level develops in the track" should be "cross-level variation develops in the track": cross-level (or cant, or superelevation) is a quite normal designed feature of curved track - and has sometimes even been applied on straight track!
| kashew
France
Specializes in field
Native speaker of:  English
PRO pts in category: 24
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