EP2007948A1 - Device intended to curb and hold back the flow of sediment and method for injecting aggregates into said device - Google Patents

Device intended to curb and hold back the flow of sediment and method for injecting aggregates into said device

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Publication number
EP2007948A1
EP2007948A1 EP07731290A EP07731290A EP2007948A1 EP 2007948 A1 EP2007948 A1 EP 2007948A1 EP 07731290 A EP07731290 A EP 07731290A EP 07731290 A EP07731290 A EP 07731290A EP 2007948 A1 EP2007948 A1 EP 2007948A1
Authority
EP
European Patent Office
Prior art keywords
aggregates
braking
shell
inner casing
sediment flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07731290A
Other languages
German (de)
French (fr)
Inventor
Jean Cornic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2007948A1 publication Critical patent/EP2007948A1/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
    • E02B3/127—Flexible prefabricated covering elements, e.g. mats, strips bags filled at the side

Definitions

  • Device for braking and retaining the flow of sediments and method of injecting aggregates in such a device.
  • the present invention relates to a device for braking and holding the flow of sediment in coastal or other medium, and a method of injecting aggregates in such a device.
  • This type of device intended in particular to stabilize the beaches, traps the sediments that transit in coastal areas or otherwise. These sediments accumulate along the device, which is generally in the form of an envelope, arranged perpendicular to the flow and backflow of the water stream.
  • This type of envelope which is in the form of a coil, that is to say having a substantially tubular shape, has variable dimensions depending on the aquatic area to be stabilized. Its diameter can vary from a few centimeters to several meters, while its length can go up to several hundred meters.
  • Patent FR 2 778 930 which is owned by the applicant, describes a casing-shaped form, consisting of a shell permeable to water. It is equipped with internal secondary envelopes in which sediments are injected. These secondary shells are integral with the outer casing, by their base, so as to stabilize the assembly.
  • This device is made of a geotextile material, permeable to water, but not sand. Injection of the sediments is done first in the secondary envelopes.
  • This type of envelope effectively slows the flow of sediments and retain them in coastal areas or other areas, without collapse or displacement of the envelope.
  • the envelope must also have a significant resistance so as not to be destabilized over time, and not present tears.
  • the invention proposes to remedy the aforementioned disadvantages by means of a device having a very high resistance and allowing the injection aggregates within the permeable envelope over very long lengths, positioning at one end.
  • the present invention relates to a device for braking and retaining the sediment flow along the coastline, arranged perpendicularly or longitudinally with respect to the coastline, consisting of an outer protective shell 1, woven or not, at the inside which is disposed one or more inner envelopes 2 forming a filter, the shell 1 and the inner shell 2 being permeable to water, and having a coil shape, said inner envelope 2 being hydraulically injected with aggregates, characterized in what said outer protective shell 1 consists of a plurality of successive permeable layers made of one or more polymers.
  • Another object of the present invention relates to the method of filling these envelopes.
  • FIG. 1 is a longitudinal perspective representation of the device according to the invention
  • FIG. 2 is a representation in longitudinal section of this same device
  • the device for braking and retaining the flow of sediments along the coastline or any other aquatic zone consists of at least two envelopes 1 and 2, the outer one called hereinafter shell description 1, and the Other inner 2.
  • the inner shell 2 is disposed in the shell 1, and serves as a filter.
  • the shell 1, woven or not, permeable consists of a plurality of successive layers 1a, 1b, all permeable to water, and having a high resistance, especially to traction and abrasion.
  • Figure 2 is a view, in a vertical plane, of a section of the device according to the invention. As illustrated by this figure, the successive layers 1a, 1b are spaced from each other and are connected to adjacent layers at several attachment points. For example, they can be assembled with glue or other means of attachment.
  • the outer shell 1 is intended to protect the device as a whole from abrasion, mainly due to marine or fluvial sediments or others whose device is intended to slow down the flow. It also resists tractions, pressures and other forces exerted both inside the device according to the invention, and outside, these forces being due in particular to hydraulic phenomena. Its resistance will preferably be up to 1000 KN.
  • the outer shell 1 is made of a polymer such as polypropylene, polyamide, polyester or polyethylene by way of non-limiting example. Its composition can result from only one of these polymers or in a mixture depending on the type of resistance desired. More particularly, the layers of the shell may consist of a mixture of polymers woven from a braided wire forming a cylinder. A core formed of one or more polymer strands is disposed within the cylinder. With these provisions, the resistance to abrasion of the shell is improved.
  • the outer shell 1 may also consist of a metal, alone or in combination with one or more polymers.
  • the device comprises a shell having a high tensile strength, of the order of 100 to 1000 kN / m, and abrasion, while having sufficient permeability, up to at 56l / m 2 / s, to avoid the effects of overpressure or under pressure in the aquatic environment.
  • the shell of the device according to the invention also has sufficient flexibility to absorb the energy of the swells.
  • the shell 1 undergoes a treatment against UV rays.
  • a second envelope 2 which serves as a filter.
  • the inner casing 2 is made of a polymer such as nonwoven polypropylene by way of non-limiting example. It can also be made of a metal. The choice of material will depend on the type of resistance desired.
  • Aggregates are injected hydraulically and will give volume and a form of coil to the entire device according to the invention.
  • the permeability of the inner shell 2 and the shell 1 allows the water to be removed, while trapping the aggregates inside the inner envelope (s) 2 .
  • the injection of aggregates can be carried out in two different ways. It can be done in the usual way, that is to say at the level of orifices arranged at regular intervals arranged at the top of the inner envelope 2.
  • the injection can also be performed by means of a network of flexible pipes 3 disposed inside the inner casing 2.
  • This network 3 is arranged longitudinally in the inner casing 2. It runs on different lengths of the device according to the invention so that the injection can be done over the entire length of the device.
  • These flexible pipes 3 are for example arranged in the upper or lower part of the inner casing 2.
  • all the pipes 3 are not filled with aggregates at the same time. To keep them free during the injection, they can be filled with air or water, and serve to subsequently inject aggregates into the inner casing 2.
  • This injection technique avoids the intervention of divers, especially in the case of submerged structures, insofar as the injection can be carried out directly from the coast. It also avoids the closure of the orifices during a conventional injection, this closure is often delicate and expensive depending on the area where is disposed the braking device of the sediment flow.
  • the device for braking sediment flow in coastal or other environments is used as a sedimentological and current barrier.
  • This length can be of different lengths depending on the area to be protected. This length can be unitary, that is to say presented in one single block or be divided into several parts.
  • its diameter can vary from 10 centimeters to several meters, depending on the littoral, fluvial or other area to protect.
  • the device designed to slow the flow of sediments in the coastal environment has a high resistance to traction and abrasion in particular and a high stability over time. Its carapace thus avoids tearing of the device, and also avoids the displacement of this same device depending on the flow of the coastline, which can be important.

Abstract

Device for curbing and holding back the flow of sediments in a coastal environment or any other aquatic environment, arranged perpendicularly or longitudinally relative to the coastline, constituted by an outer protective shell (1) inside which is arranged one or more internal envelopes (2) forming a filter, the shell (1) and the internal envelope (2) being permeable to water, and being ring tubed in shape, said internal envelope (2) being injected hydraulically with aggregates, characterised in that said outer protective shell (1) is constituted by a plurality of successive permeable layers.

Description

Dispositif destiné à freiner et retenir le flux de sédiments et procédé d'injection de granulats dans un tel dispositif. Device for braking and retaining the flow of sediments and method of injecting aggregates in such a device.
La présente invention concerne un dispositif destiné à freiner et retenir le flux de sédiments en milieu littoral ou autre, ainsi qu'un procédé d'injection de granulats dans un tel dispositif.The present invention relates to a device for braking and holding the flow of sediment in coastal or other medium, and a method of injecting aggregates in such a device.
Ce type de dispositif, destiné à stabiliser notamment les plages, piège les sédiments qui transitent en milieu littoral ou autre. Ces sédiments s'accumulent le long du dispositif, qui se présente généralement sous la forme d'une enveloppe, disposée perpendiculairement par rapport au flux et reflux du courant d'eau.This type of device, intended in particular to stabilize the beaches, traps the sediments that transit in coastal areas or otherwise. These sediments accumulate along the device, which is generally in the form of an envelope, arranged perpendicular to the flow and backflow of the water stream.
Ce type d'enveloppe, qui se présente sous forme de boudin, c'est-à-dire présentant une forme sensiblement tubulaire, a des dimensions variables en fonction de la zone aquatique à stabiliser. Son diamètre peut varier de quelques centimètres à plusieurs mètres, tandis que sa longueur peut aller jusqu'à plusieurs centaines de mètres.This type of envelope, which is in the form of a coil, that is to say having a substantially tubular shape, has variable dimensions depending on the aquatic area to be stabilized. Its diameter can vary from a few centimeters to several meters, while its length can go up to several hundred meters.
Le brevet FR 2 778 930, dont est titulaire la demanderesse, décrit une enveloppe en forme de boudin, constituée d'une carapace perméable à l'eau. Elle est munie d'enveloppes secondaires internes dans lesquelles sont injectés des sédiments. Ces enveloppes secondaires sont solidaires de l'enveloppe externe, par leur base, de manière à stabiliser l'ensemble. Ce dispositif est réalisé en un matériau géotextile, perméable à l'eau, mais pas au sable. L'injection des sédiments est réalisée d'abord dans les enveloppes secondaires.Patent FR 2 778 930, which is owned by the applicant, describes a casing-shaped form, consisting of a shell permeable to water. It is equipped with internal secondary envelopes in which sediments are injected. These secondary shells are integral with the outer casing, by their base, so as to stabilize the assembly. This device is made of a geotextile material, permeable to water, but not sand. Injection of the sediments is done first in the secondary envelopes.
Ce type d'enveloppe permet de ralentir efficacement le flux de sédiments et de les retenir au niveau des zones littorales ou autres, sans effondrement ou déplacement de l'enveloppe. L'enveloppe doit présenter également une résistance importante de manière à ne pas être déstabilisée au fur et à mesure du temps, et ne pas présenter de déchirures.This type of envelope effectively slows the flow of sediments and retain them in coastal areas or other areas, without collapse or displacement of the envelope. The envelope must also have a significant resistance so as not to be destabilized over time, and not present tears.
De plus, l'injection des granulats dans l'enveloppe présente parfois des difficultés lors de sa mise en oeuvre, notamment lorsque l'enveloppe se trouve en milieu immergé, nécessitant alors l'intervention de plongeurs.In addition, the injection of aggregates into the casing sometimes presents difficulties during its implementation, especially when the casing is in a submerged environment, requiring the intervention of divers.
L'invention se propose de remédier aux inconvénients précités au moyen d'un dispositif présentant une résistance très importante et permettant l'injection de granulats à l'intérieur de l'enveloppe perméable sur de très grandes longueurs, en se positionnant à une seule extrémité.The invention proposes to remedy the aforementioned disadvantages by means of a device having a very high resistance and allowing the injection aggregates within the permeable envelope over very long lengths, positioning at one end.
A cet effet, la présente invention a pour objet un dispositif pour freiner et retenir le flux de sédiments le long du littoral, disposé perpendiculairement ou longitudinalement par rapport au littoral, constitué d'une carapace 1 protectrice extérieure, tissée ou non, à l'intérieur de laquelle est disposée une ou plusieurs enveloppes intérieures 2 formant un filtre, la carapace 1 et l'enveloppe intérieure 2 étant perméables à l'eau, et présentant une forme de boudin, ladite enveloppe intérieure 2 étant injectée hydrauliquement de granulats, caractérisé en ce que ladite carapace 1 protectrice extérieure est constituée d'une pluralité de couches successives perméables réalisées en un ou plusieurs polymères.To this end, the present invention relates to a device for braking and retaining the sediment flow along the coastline, arranged perpendicularly or longitudinally with respect to the coastline, consisting of an outer protective shell 1, woven or not, at the inside which is disposed one or more inner envelopes 2 forming a filter, the shell 1 and the inner shell 2 being permeable to water, and having a coil shape, said inner envelope 2 being hydraulically injected with aggregates, characterized in what said outer protective shell 1 consists of a plurality of successive permeable layers made of one or more polymers.
Un autre objet de la présente invention concerne le procédé de remplissage de ces enveloppes.Another object of the present invention relates to the method of filling these envelopes.
On comprendra mieux l'invention en référence aux dessins annexés sur lesquels :The invention will be better understood with reference to the accompanying drawings in which:
- la figure 1 est une représentation en perspective longitudinale du dispositif selon l'invention,FIG. 1 is a longitudinal perspective representation of the device according to the invention,
- la figure 2 est une représentation en coupe longitudinale de ce même dispositif,FIG. 2 is a representation in longitudinal section of this same device,
Le dispositif destiné à freiner et à retenir le flux de sédiments le long du littoral ou de toute autre zone aquatique est constitué d'au moins deux enveloppes 1 et 2, l'une extérieure appelée dans la suite de Ia description carapace 1 , et l'autre intérieure 2. L'enveloppe intérieure 2 est disposée dans la carapace 1 , et sert de filtre.The device for braking and retaining the flow of sediments along the coastline or any other aquatic zone consists of at least two envelopes 1 and 2, the outer one called hereinafter shell description 1, and the Other inner 2. The inner shell 2 is disposed in the shell 1, and serves as a filter.
La carapace 1, tissée ou non, perméable, est constituée d'une pluralité de couches successives 1a, 1b, toutes perméables à l'eau, et présentant une résistance importante, notamment à la traction et à l'abrasion. La figure 2 est une vue, dans un plan vertical, d'une section du dispositif selon l'invention. Tel qu'illustrées par cette figure, les couches successives 1a, 1b sont espacées les unes des autres et sont reliées aux couches voisines en plusieurs points de fixation. Par exemple, elles peuvent être assemblées avec de la colle ou tout autre moyen de fixation.The shell 1, woven or not, permeable, consists of a plurality of successive layers 1a, 1b, all permeable to water, and having a high resistance, especially to traction and abrasion. Figure 2 is a view, in a vertical plane, of a section of the device according to the invention. As illustrated by this figure, the successive layers 1a, 1b are spaced from each other and are connected to adjacent layers at several attachment points. For example, they can be assembled with glue or other means of attachment.
La carapace extérieure 1 est destinée à protéger le dispositif dans son ensemble de l'abrasion, due principalement aux sédiments marins ou fluviaux ou autres dont le dispositif est destiné à freiner le flux. Elle résiste également aux tractions, pressions et autres forces exercées tant à l'intérieur du dispositif selon l'invention, qu'à l'extérieur, ces forces étant dues notamment à des phénomènes hydrauliques. Sa résistance ira préférentiellement jusqu'à 1000 KN.The outer shell 1 is intended to protect the device as a whole from abrasion, mainly due to marine or fluvial sediments or others whose device is intended to slow down the flow. It also resists tractions, pressures and other forces exerted both inside the device according to the invention, and outside, these forces being due in particular to hydraulic phenomena. Its resistance will preferably be up to 1000 KN.
Pour répondre à ces différentes caractéristiques, la carapace extérieure 1 est réalisée en un polymère tel que le polypropylène, le polyamide, le polyester ou le polyéthylène à titre d'exemple non limitatif. Sa composition peut résulter d'un seul de ces polymères ou en un mélange selon le type de résistance souhaité. Plus particulièrement les couches de la carapace peuvent être constituées d'un mélange de polymères tissés à partir d'un fil tressé formant un cylindre. Une âme, formée d'un ou plusieurs fils en polymère, est disposée à l'intérieur du cylindre. Grâce à ces dispositions, la résistance à l'abrasion de la carapace est améliorée.To meet these different characteristics, the outer shell 1 is made of a polymer such as polypropylene, polyamide, polyester or polyethylene by way of non-limiting example. Its composition can result from only one of these polymers or in a mixture depending on the type of resistance desired. More particularly, the layers of the shell may consist of a mixture of polymers woven from a braided wire forming a cylinder. A core formed of one or more polymer strands is disposed within the cylinder. With these provisions, the resistance to abrasion of the shell is improved.
La carapace extérieure 1 peut également être constituée d'un métal, seul ou associé à un ou plusieurs polymères.The outer shell 1 may also consist of a metal, alone or in combination with one or more polymers.
Grâce à l'ensemble de ces caractéristiques, le dispositif comporte une carapace présentant une grande résistance à la traction, de l'ordre de 100 à 1000 kN/m, et à l'abrasion, tout en présentant une perméabilité suffisante, allant jusqu'à 56l/m2/s, pour éviter les effets de surpression ou de sous pression en milieu aquatique. La carapace du dispositif selon l'invention présente aussi une souplesse suffisante pour absorber l'énergie des houles.Thanks to all these features, the device comprises a shell having a high tensile strength, of the order of 100 to 1000 kN / m, and abrasion, while having sufficient permeability, up to at 56l / m 2 / s, to avoid the effects of overpressure or under pressure in the aquatic environment. The shell of the device according to the invention also has sufficient flexibility to absorb the energy of the swells.
Afin de présenter une bonne résistance face aux intempéries et au temps, la carapace 1 subit un traitement contre les rayons UV.In order to have a good weather and weather resistance, the shell 1 undergoes a treatment against UV rays.
A l'intérieur de cette carapace 1, est disposée au moins une seconde enveloppe 2, qui sert de filtre.Inside this shell 1 is disposed at least a second envelope 2, which serves as a filter.
L'enveloppe intérieure 2 est réalisée en un polymère tel que le polypropylène non tissée à titre d'exemple non limitatif. Elle peut également être constituée d'un métal. Le choix du matériau sera fonction du type de résistance souhaité.The inner casing 2 is made of a polymer such as nonwoven polypropylene by way of non-limiting example. It can also be made of a metal. The choice of material will depend on the type of resistance desired.
Des granulats y sont injectés hydrauliquement et permettront de donner du volume et une forme de boudin à l'ensemble du dispositif selon l'invention. Lors de cette injection, la perméabilité de l'enveloppe intérieure 2 et de la carapace 1 permet à l'eau de pouvoir être évacuée, tout en piégeant les granulats à l'intérieur de la ou les enveloppe(s) intérieure(s) 2. L'injection des granulats peut être réalisée de deux manières différentes. Elle peut se faire de manière habituelle, c'est-à-dire au niveau d'orifices disposés à intervalles réguliers disposés en haut de l'enveloppe intérieure 2.Aggregates are injected hydraulically and will give volume and a form of coil to the entire device according to the invention. During this injection, the permeability of the inner shell 2 and the shell 1 allows the water to be removed, while trapping the aggregates inside the inner envelope (s) 2 . The injection of aggregates can be carried out in two different ways. It can be done in the usual way, that is to say at the level of orifices arranged at regular intervals arranged at the top of the inner envelope 2.
L'injection peut également être réalisée au moyen d'un réseau de tuyaux souples 3 disposés à l'intérieur de l'enveloppe intérieure 2. Ce réseau 3 est disposé longitudinalement dans l'enveloppe intérieure 2. Il court sur différentes longueurs du dispositif selon l'invention de manière à ce que l'injection puisse se faire sur toute la longueur du dispositif. Ces tuyaux souples 3 sont par exemple disposés en partie haute ou basse de l'enveloppe intérieure 2.The injection can also be performed by means of a network of flexible pipes 3 disposed inside the inner casing 2. This network 3 is arranged longitudinally in the inner casing 2. It runs on different lengths of the device according to the invention so that the injection can be done over the entire length of the device. These flexible pipes 3 are for example arranged in the upper or lower part of the inner casing 2.
Lors de l'injection, tous les tuyaux 3 ne sont pas remplis de granulats en même temps. Pour les maintenir libres lors de l'injection, ils peuvent être emplis d'air ou d'eau, et servent à injecter ultérieurement des granulats dans l'enveloppe intérieure 2.During the injection, all the pipes 3 are not filled with aggregates at the same time. To keep them free during the injection, they can be filled with air or water, and serve to subsequently inject aggregates into the inner casing 2.
Cette technique d'injection évite l'intervention de plongeurs, notamment dans le cas d'ouvrages immergés, dans la mesure où l'injection peut être réalisée directement à partir du littoral. Elle évite également la fermeture des orifices lors d'une injection classique, cette fermeture étant souvent délicate et coûteuse en fonction de la zone où est disposée le dispositif de freinage du flux des sédiments.This injection technique avoids the intervention of divers, especially in the case of submerged structures, insofar as the injection can be carried out directly from the coast. It also avoids the closure of the orifices during a conventional injection, this closure is often delicate and expensive depending on the area where is disposed the braking device of the sediment flow.
Le dispositif destiné au freinage du flux des sédiments en milieu littoral ou autre est utilisé en tant que barrière sédimentologique et de courantologie.The device for braking sediment flow in coastal or other environments is used as a sedimentological and current barrier.
Il peut se présenter de différentes longueurs en fonction de la zone à protéger. Cette longueur peut être unitaire, c'est-à-dire présentée d'un seul bloc ou être divisée en plusieurs parties.It can be of different lengths depending on the area to be protected. This length can be unitary, that is to say presented in one single block or be divided into several parts.
De la même manière, son diamètre peut varier de 10 centimètres à plusieurs mètres, en fonction de la zone littorale, fluviale ou autre à protéger.In the same way, its diameter can vary from 10 centimeters to several meters, depending on the littoral, fluvial or other area to protect.
Le dispositif destiné à freiner le flux des sédiments en milieu littoral présente une résistance importante à la traction et à l'abrasion notamment ainsi qu'une grande stabilité dans le temps. Sa carapace permet ainsi d'éviter les déchirures du dispositif, et évite également le déplacement de ce même dispositif selon le flux du littoral, qui peut être important.The device designed to slow the flow of sediments in the coastal environment has a high resistance to traction and abrasion in particular and a high stability over time. Its carapace thus avoids tearing of the device, and also avoids the displacement of this same device depending on the flow of the coastline, which can be important.
Bien que l'invention ait été décrite avec des moyens de réalisation particuliers, elle comprend tous les équivalents techniques des moyens décrits. Although the invention has been described with particular embodiments, it includes all the technical equivalents of the means described.

Claims

REVENDICATIONS
1. Dispositif pour freiner et retenir le flux de sédiments le long du littoral ou tout autre milieu aquatique, disposé perpendiculairement ou longitudinalement par rapport au littoral, constitué d'une carapace 1 protectrice extérieure à l'intérieur de laquelle est disposée une ou plusieurs enveloppes intérieures 2 formant un filtre, la carapace 1 et l'enveloppe intérieure 2 étant perméables à l'eau, et présentant une forme de boudin, ladite enveloppe intérieure 2 étant injectée hydrauliquement de granulats, caractérisé en ce que ladite carapace 1 protectrice extérieure est constituée d'une pluralité de couches successives perméables, réalisées en un ou plusieurs polymères.1. Device for braking and retaining the flow of sediments along the coast or any other aquatic environment, arranged perpendicularly or longitudinally with respect to the coastline, consisting of an outer protective shell 1 inside which is disposed one or more envelopes inner 2 forming a filter, the shell 1 and the inner casing 2 being permeable to water, and having a form of coil, said inner casing 2 being hydraulically injected aggregates, characterized in that said outer protective shell 1 is constituted a plurality of successive permeable layers, made of one or more polymers.
2. Dispositif pour freiner le flux de sédiments selon la revendication précédente, caractérisé en ce que la carapace extérieure comprend du métal.2. Device for braking sediment flow according to the preceding claim, characterized in that the outer shell comprises metal.
3. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les couches sont disposées, dans un plan vertical, espacées les unes par rapport aux autres, et en ce qu'elles sont reliées aux couches voisines en plusieurs points de fixation.3. Device according to one of the preceding claims, characterized in that the layers are arranged in a vertical plane, spaced relative to each other, and in that they are connected to the adjacent layers at several attachment points.
4. Dispositif pour freiner le flux de sédiments selon la revendication 1, caractérisé en ce l'enveloppe intérieure 2 est injectée de granulats au moyen d'un réseau de tuyaux souples 3 disposé longitudinalement par rapport à ladite enveloppe intérieure 2.4. A device for braking sediment flow according to claim 1, characterized in that the inner casing 2 is injected aggregates by means of a network of flexible pipes 3 disposed longitudinally with respect to said inner casing 2.
5. Dispositif pour freiner le flux de sédiments selon la revendication 4, caractérisé en ce que les tuyaux souples 3 présentent une longueur variable.5. A device for braking sediment flow according to claim 4, characterized in that the flexible pipes 3 have a variable length.
6. Dispositif pour freiner le flux de sédiments selon l'une des revendications 4 ou 5, caractérisé en ce que les tuyaux souples 3 sont disposés en partie haute ou basse dudit dispositif.6. Device for braking sediment flow according to one of claims 4 or 5, characterized in that the flexible pipes 3 are arranged in the upper or lower part of said device.
7. Dispositif pour freiner le flux de sédiments selon l'une des revendications précédentes, caractérisé en ce que l'enveloppe intérieure 2 est réalisée en polypropylène non tissée, et/ou en métal. 7. Device for braking sediment flow according to one of the preceding claims, characterized in that the inner casing 2 is made of non-woven polypropylene, and / or metal.
8. Dispositif pour freiner le flux des sédiments selon l'une des revendications précédentes, caractérisé en ce que la carapace extérieure 1 est traitée contre les rayons UV.8. Device for braking sediment flow according to one of the preceding claims, characterized in that the outer shell 1 is treated against UV rays.
9. Procédé d'injection hydraulique de granulats dans un dispositif destiné à freiner le flux de sédiments le long du littoral selon la revendication 3, caractérisé en ce les tuyaux souples servent à injecter des granulats à partir du littoral, ou bien d'une berge ou d'un engin flottant.9. A method of hydraulic injection of aggregates in a device for braking the sediment flow along the coastline according to claim 3, characterized in that the flexible pipes are used to inject aggregates from the shore, or a bank or a floating craft.
10. Procédé d'injection hydraulique de granulats selon la revendication 9, caractérisé en ce que l'injection des granulats dans les tuyaux 3 est réalisée dans un tuyau 3 à la fois, les tuyaux 3 non injectés étant préalablement remplis d'air ou d'eau. 10. A method of hydraulic injection of aggregates according to claim 9, characterized in that the injection of the aggregates in the pipes 3 is made in a pipe 3 at a time, the uninjected pipes 3 being previously filled with air or water. 'water.
EP07731290A 2006-04-14 2007-04-13 Device intended to curb and hold back the flow of sediment and method for injecting aggregates into said device Withdrawn EP2007948A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0603302A FR2899913B1 (en) 2006-04-14 2006-04-14 DEVICE FOR BRAKING AND RETAINING THE SEDIMENT FLOW ALONG THE COASTLINE AND A METHOD OF INJECTING AGGREGATES IN SUCH A DEVICE
PCT/FR2007/000622 WO2007119002A1 (en) 2006-04-14 2007-04-13 Device intended to curb and hold back the flow of sediment and method for injecting aggregates into said device

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EP2007948A1 true EP2007948A1 (en) 2008-12-31

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EP07731290A Withdrawn EP2007948A1 (en) 2006-04-14 2007-04-13 Device intended to curb and hold back the flow of sediment and method for injecting aggregates into said device

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FR (1) FR2899913B1 (en)
WO (1) WO2007119002A1 (en)

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IT201600126498A1 (en) * 2016-12-14 2018-06-14 Maccaferri Off Spa Sack for the realization of civil engineering works, procedure for its manufacture, and for the realization of a work using several bags of this type

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NL8402938A (en) * 1984-09-27 1986-04-16 Caspar Wilhelmus Arnoldus Van PROTECTION MAT FOR WATER CONSTRUCTION.
NL192929C (en) * 1989-02-06 1998-05-07 Gouderak B V Covering mat for embankments, bottom and / or wall protection for watercourses or the like; as well as a method for filling such a covering mat.
AU2037397A (en) * 1996-03-22 1997-10-17 Geofabrics Limited Geotextile
FR2748502B1 (en) * 1996-05-13 1998-07-03 Cornic Jean Rene SEDIMENTARY TRANSIT BRAKE ON THE COAST
FR2778930B1 (en) * 1998-05-25 2000-07-28 Jean Rene Cornic DEVICE FOR BRAKING THE FLOW OF SEDIMENTS ALONG THE COAST
DE10326802B4 (en) * 2003-06-13 2008-12-11 Sembritzky, Ute Containers for flood protection

Non-Patent Citations (1)

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Title
See references of WO2007119002A1 *

Also Published As

Publication number Publication date
WO2007119002A1 (en) 2007-10-25
FR2899913A1 (en) 2007-10-19
FR2899913B1 (en) 2010-06-18

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