EP0923692A1 - Device and method for filling a bag with a fluid material and bag suited for this purpose - Google Patents

Device and method for filling a bag with a fluid material and bag suited for this purpose

Info

Publication number
EP0923692A1
EP0923692A1 EP97940186A EP97940186A EP0923692A1 EP 0923692 A1 EP0923692 A1 EP 0923692A1 EP 97940186 A EP97940186 A EP 97940186A EP 97940186 A EP97940186 A EP 97940186A EP 0923692 A1 EP0923692 A1 EP 0923692A1
Authority
EP
European Patent Office
Prior art keywords
bag
longitudinal edges
straps
shuttle
injection member
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Withdrawn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
EP97940186A
Other languages
German (de)
French (fr)
Inventor
Luc Henri Jean-Marie Lepercq
Jean Pierre Paul Guerin
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.)
Technip France SAS
Original Assignee
Coflexip SA
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 Coflexip SA filed Critical Coflexip SA
Publication of EP0923692A1 publication Critical patent/EP0923692A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/12—Laying or reclaiming pipes on or under water
    • F16L1/123—Devices for the protection of pipes under water
    • 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

Definitions

  • the present invention relates to a device for covering an elongated member, such as a cable or a pipe deposited on the seabed.
  • US Pat. No. 4,480,943 is a device for covering a pipe deposited on the seabed, arranged to deploy on the pipe an elongated bag having in cross section a flattened shape, which is filled with 'A hardenable material such as cement from an accompanying ship, the filling of the bag being carried out by an injection member as it is deployed.
  • the bag substantially follows the profile of the covered member before the material injected inside hardens. Protection is thus obtained, in a form adapted to that of the covered member, against mechanical attacks linked for example to navigation or fishing.
  • the bag can also be used to hold the covered organ in place against the action of underwater currents.
  • the bag has two longitudinal edges which can be separated on the one hand to form an opening on the top of the bag, allowing the introduction of the injection member, and on the other hand to be assembled downstream. of the last.
  • the invention aims to easily and reliably perform continuous filling of the bag.
  • the invention achieves this by proposing a device for the continuous filling with a hardenable material of a bag of elongated shape and having in cross section a flattened shape, this bag also having on its upper face two separable and overlapping longitudinal edges.
  • ie device comprising an injection member making it possible to inject a hardenable material into the bag and a shuttle intended to be moved along the bag, this shuttle being shaped at the front to continuously spread said longitudinal edges one on the other at least in a direction perpendicular to the plane of the bag and define a lateral opening extending over a given length to allow the introduction of the injection member into the bag, the shuttle being further conformed to the 'rear to continuously bring said longitudinal edges to make them overlap and perform their assembly.
  • the bag has at the lateral end of said longitudinal edges of the guide ribs and the shuttle comprises an external guide and an internal guide having grooves shaped to guide said ribs, the external guide extending upstream of the internal guide, the two guides extending in respective parallel planes whose spacing corresponds substantially to the distance between said ribs when the longitudinal edges of the bag are assembled so as to close the bag, said shuttle further comprising at the before a spacer member extending laterally between said planes and placed upstream of the internal guide to spread the longitudinal edges of the bag when the latter passes through the shuttle, the shuttle comprising at the rear a pressure member, located downstream of the guide external, to reassemble said longitudinal edges.
  • Such a filling device also makes it possible to avoid, if the longitudinal edges of the unfilled bag have been assembled with a certain lateral offset, that the removable fixing means, which are preferably of the Velcro strip type as indicated above, are not subjected during their passage in the shuttle to shearing forces liable to deteriorate them.
  • the subject of the invention is also a new method of covering an elongated member, such as a cable or a pipe deposited on the seabed, of the type in which a bag is deployed on the member to be covered.
  • the injection of the hardenable material can be carried out without contact with water and one can add to the hardenable material a load of reinforcing metallic elements, without fear of a problem of corrosion of these metallic elements by water. .
  • the presence of the metallic elements notably increases the mechanical resistance when the hardenable material has frozen and it becomes possible thanks to the invention, for equivalent mechanical resistance, to use a quantity of hardenable material clearly lower than in the art. prior.
  • the saving in hardenable material which it is possible to achieve thanks to the invention makes it possible to reduce, or even avoid, the supplies of hardenable material from the accompanying ship, which is particularly advantageous when covering the cable or the pipe. takes place on the high seas.
  • said metallic elements have a shape elongated and their length is between 2 and 3 cm and their
  • the injection member when a bag section is filled, the injection member is moved relative to the bag to remove it from the hardenable material contained in the bag and then closed the bag along a transverse closure line, then optionally separating the unfilled bag reserve from the filled and closed section of bag.
  • the bag is closed by stapling after the injection member has been brought into a position in which it does not hinder the closing of the bag.
  • the bag has two opposite main walls, connected by straps whose length in the stretched state determines the thickness of the bag after filling.
  • each main wall of the bag is made up of a woven fabric and said straps are made up of threads woven from this fabric using a weaving technique of the two-piece velor type facing each other.
  • the injection member is used to move the straps away from said longitudinal edges.
  • the injection member is in this case advantageously shaped so as to constitute, when it enters the bag, a deflector capable of moving the straps away from said longitudinal edges.
  • the injection member is also advantageously shaped to at least partially deploy the straps located in the vicinity of the zone into which the hardenable material is injected.
  • the subject of the invention is also a bag of elongated shape capable of being used as an envelope for pouring inside the bag of a fluid material in order to produce a protective member of elongated shape, said bag having in section transverse a generally flattened shape, comprising opposite main walls, constituted by woven fabrics and connected by straps coming from weaving by a weaving technique of the velvet type double piece face-to-face with said main walls, the length to the stretched state of beta straps determining the thickness of the bag in the filled state.
  • the subject of the invention is also a protective member of elongated shape, consisting of a bag as mentioned above filled with a hardenable material, preferably cement, and advantageously comprising a reinforcing filler made up of metallic elements.
  • FIG. 1 is a schematic perspective view illustrating the use of a device according to the invention
  • Figure 2 is a schematic sectional view of an elongated member covered by a protective bag according to the invention
  • Figure 3 is a schematic sectional view of a device according to an exemplary embodiment of the 'invention
  • FIG. 4 is a diagrammatic side view of the injection member and of the shuttle
  • FIG. 5 is a diagrammatic view from above according to the arrow V in FIG. 4,
  • FIG. 6 is a schematic side view representing the shuttle
  • FIG. 7 is a schematic front view according to arrow VII of FIG. 6, FIGS. 8 to 10 show different cross sections of the bag during filling,
  • Figure 11 is a schematic view similar to Figure 3 showing the device at the end of filling a bag section and before the closure of the latter and its cutting.
  • FIG. 1 There is shown schematically in Figure 1 and in perspective a cable 1 for transporting electrical energy laid on the seabed and being covered by a bag 2, deployed and continuously filled by a tracked vehicle 3, connected to an accompanying ship 4 by a pipe 5 for supplying a hardenable material to be injected into the bag, by a control cable 6, and by a lifting cable 7.
  • vehicle 3 it is not going beyond the scope of the invention to use the vehicle 3 to cover any other elongated member such as a pipe for transporting hydrocarbons for example or to fill an elongated bag.
  • the bag is deployed on the member to be covered by the tracked vehicle 3.
  • the means for accommodating a reserve of unfilled bag are replaced by means for guiding the unfilled bag and bringing it into a position suitable for its filling.
  • the curable material is a cement grout whose density is between 1.6 and
  • curable is of the order of 20 to 80 kg per m of curable material.
  • density values less than 1.6 the metallic elements tend to settle in the bag and for values greater than 2.4, grout injection becomes difficult.
  • the vehicle 3 is self-propelled and it is provided in a manner known per se with detectors not shown which allow it to follow the member to be covered without the intervention of divers.
  • the curable material is injected under pressure in the still fluid state into the bag so that the latter can conform to the profile of the member to be covered, as illustrated in the cross section of FIG. 2.
  • the bag 2 is of elongated shape, has a generally flattened cross-section and has two main walls 8 and 9 meeting at the lateral ends 10 of the bag and connected from place to place by straps 11 whose length in the stretched state determines the thickness of material protecting the covered organ.
  • elongated bag is meant a bag whose length is at least ten times greater than the width.
  • the width of the bag is for example of the order of 2 m and its thickness between 10 and 50 cm, and preferably between 15 and 30 cm.
  • the length of a bag section can reach for example 500 m, or even several kilometers.
  • the bag constitutes, when the material which fills it has hardened, a protective barrier against external mechanical attack, but also against corrosion and can also reduce the heat loss in the case where the covered organ is a pipe for transporting hot hydrocarbons.
  • the top wall 9 has in its central region two longitudinal edges 12 and 13 overlapping and which can be assembled removably by means of fastening means 14 and 15 hooking by contact, of the Velcro strip type.
  • the longitudinal edges 12 and 13 are provided on their free edges with respective guide ribs 16 and 17, of substantially circular cross section in the example described.
  • the straps 11 came from weaving with the main walls 8 and 9 by a technique called velvet double piece face-to-face, known in itself and mistletoe will not be described in more detail.
  • the implantation of the straps 11 is chosen so as to give the filled bag a predetermined thickness which is substantially constant, depending on the length of the said straps, without however the presence of the straps inside the bag preventing the good distribution of the metallic reinforcing elements. added to the cement grout.
  • the straps 11 are distributed in a staggered fashion with a pitch of 6 cm in the longitudinal direction of the bag and a spacing of 3 cm between two rows of straps. There are no straps 11 between the longitudinal edges 12 and 13 and to compensate for this absence, from the point of view of the mechanical resistance of the bag to the pressure of the cement grout, the straps adjacent to the longitudinal edges 12 and 13 are doubled.
  • the bag 2 is stored on the vehicle 3 while being wound up on a reel 18 situated at the front of the vehicle with the longitudinal edges 12, 13 assembled.
  • the bag reserve stored on the reel 18 is continuously unwound in a coordinated fashion with the advancement of the vehicle 3 and passes over a guide table 19, inclined downwards and towards the rear of the vehicle until a short distance from the seabed, so that each portion of the filled bag is gently deposited on the organ to be covered and on the seabed.
  • the vehicle 3 also includes a cutting stapler 20 for closing transversely and detaching a section of filled bag.
  • the injection of the hardenable material into the bag is carried out by means of an injection pipe 21, integral at the top with a support 22 capable of being moved on a guide structure 23, the latter being integral with the guide table 19 and disposed above and parallel to it.
  • the injection pipe 21 is connected at its upper end to a hose 24 itself connected to a nozzle 25 connected to the pipe 5.
  • a shuttle 26 is provided on the one hand to separate the longitudinal edges 12 and 13 in order to create an opening allowing the introduction of the injection pipe 21 into the bag and on the other hand then to assemble the longitudinal edges, as will be specified in the following.
  • the shuttle 26 is integral with the aforementioned support 22, and as shown more particularly in FIGS. 4 to 7, comprises an external guide 27 and an internal guide 28 having grooves shaped to guide the ribs 16 and 17 respectively.
  • the external guide 27 is extended, having regard to the direction of travel of the bag on the guide table 19, upstream of the internal guide 28.
  • the internal guides 28 and external 27 follow each of the inflected paths in respective vertical planes, the spacing corresponding substantially to the spacing of the guide ribs 16 and 17 when the longitudinal edges of the bag are assembled so as to close the bag.
  • the shuttle 26 further comprises a spacer member 29 located upstream of the internal guide 28 and having a front end 30 which is inserted between the longitudinal edges 12 and 13 to separate them by wedge effect, and a pressure member 31 located downstream of the external guide 27 and opposite a sole 32, to reassemble the longitudinal edges 12 and 13 before they leave the shuttle 26.
  • the injection pipe 21 has a portion 33, extending between the external guides 27 and internal guides 28, oriented along an axis I contained in a plane substantially parallel to the plane of the guide table 19 and forming an angle of approximately 45 °. with the direction of travel of the bag.
  • the axis I is thus substantially parallel to the plane of the bag which runs on the guide table 19.
  • the portion 33 is connected to a rectilinear portion whose axis J extends parallel to the direction of movement of the bag on the guide table and parallel to the latter.
  • the portion 34 is connected, by an inflected portion 35, to a rectilinear portion of great length, of axis K parallel to the above-mentioned axis J and situated substantially in the median plane of the bag when the latter scrolls on the guide table 19
  • the length of the combined portions 35 and 36 measured parallel to the running direction of the tray, reaches lm80.
  • FIGS. 8 to 10 show different cross sections of the bag, respectively at the cut lines VIII, IX and X of Figure 3.
  • the bag 2 comes into contact with the shuttle 26 with the walls 8 and 9 substantially one against the other and the longitudinal edges 12 and 13 assembled as shown in FIG. 8.
  • the fixing means 14 and 15 are protected from the exterior thanks to the fact that they are assembled. This prevents the velcro strips from losing their effectiveness in the event of soiling.
  • the portion of the rib 17 which engages inside the external guide 27 is deflected towards the outside while the spacer member 29 separates, by a traction directed in a vertical plane, the longitudinal edges 12 and 13 upstream of the internal guide 28.
  • a lateral opening is thus formed in the bag, through which the injection pipe 21 penetrates, from the side, inside the bag, as shown in FIG. 9.
  • the axis I is substantially parallel in the plane of the longitudinal edges arranged face-to-face on either side of the portion 33 of the injection pipe.
  • the portion 33 of the injection pipe 21 advantageously constitutes a deflector which moves the straps 11 away from the opening formed between the longitudinal edges 12 and 13. This prevents, during the reassembly of the longitudinal edges 12 and 13, the straps 11 are not sandwiched between the longitudinal edges 12 and 13 and subsequently impede the expansion of the bag during filling with the hardenable material.
  • the internal guide 28 and the sole 32 deflect the longitudinal edge 13 towards the outside, downstream of the portion 33 of the injection pipe, and bring it closer to the longitudinal edge 12 for assembling the two longitudinal edges by pressing between the pressure member 31 and sole 32.
  • the unwinding speed of the bag is chosen as a function of the flow rate of curable material injected and of the size of the bag so as to keep the injection member immersed in the curable material during filling.
  • FIG. 11 shows the vehicle 3 at the end of the operation of filling a section of bag 2, which must be closed transversely and detached from the undeployed bag reserve, wound on the reel 18.
  • the support 22 is moved upwards from the lower position it kept during the filling process, so as to drive the injection pipe 21 out of the hardenable material contained in the bag and above the stapler cutter 20
  • the injection pipe 21 does not interfere with the stapling of the bag over its entire width as well as its cutting.
  • the device according to the invention is particularly suitable for filling a bag with a curable material comprising a load of metallic reinforcing elements, it is possible, without departing from the scope of the invention, to use various filling materials, to which are added or not loads of reinforcing elements, metallic or not.
  • the shuttle 26 of the embodiment which has just been described is particularly suitable for separating and then reassembling the longitudinal edges of the bag when these are provided with fastening means of the velcro strip type, does not depart from the scope of the invention by assembling the longitudinal edges using other fixing means, for example by sewing, welding, or stapling, the method of opening and assembling the bag by spacing then reconciliation longitudinal edges in a direction lying in a plane generally perpendicular to the bag plane allowing precise and reliable positioning of the longitudinal edges as well as a possibility of introducing the injection member from the side into the bag and not from above , so to easily use the injection member as a deflector to spread the straps, as explained above.
  • the undeployed bag reserve can be stored on the vehicle 3, not wound on a reel as described above, but folded in accordion.
  • the bag in the filled state can have a constant thickness depending on its length or variable, the thickness variation being easily obtained by varying the length of the straps.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Revetment (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

The invention concerns a device for continuously filling with a hardening material a bag (2) elongated in shape and with a flattened transversal cross section, this bag having further on its upper surface two longitudinal separable edges initially overlapping. The device comprises means for injecting (21) into the bag a hardening material and a shuttle (26) for moving along the bag, this shuttle being shaped in front for continuously moving apart said longitudinal edges from each other at least in a direction perpendicular to the plane of the bag and for defining a lateral opening extending along a set length to enable the insertion of the injecting means into the bag, the shuttle being further shaped at the rear for continuously bringing together said longitudinal edges so as to make them overlap and assemble them.

Description

Dispositif et procédé pour le remplissage d'un sac par un matériau fluide et sac convenant à cette fin. Device and method for filling a bag with a fluid material and bag suitable for this purpose.
La présente invention concerne un dispositif pour le recouvrement d'un organe de forme allongée, tel qu'un câble ou une conduite déposé sur le fond sous-marin.The present invention relates to a device for covering an elongated member, such as a cable or a pipe deposited on the seabed.
On connaît par le brevet américain US 4 480 943 un dispositif pour le recouvrement d'une conduite déposée sur le fond sous-marin, agencé pour déployer sur la conduite un sac de forme allongée présentant en section transversale une forme aplatie, qui est rempli d'un matériau durcissable tel que du ciment provenant d'un navire accompagnateur, le remplissage du sac étant effectué par un organe d'injection au fur et à mesure de son déploiement. Le sac épouse sensiblement le profil de l'organe recouvert avant que le matériau injecté à l'intérieur ne durcisse. On obtient ainsi une protection, de forme adaptée à celle de l'organe recouvert, contre les agressions mécaniques liées par exemple à la navigation ou à la pêche. Le sac peut également servir à maintenir en place l'organe recouvert contre l'action des courants sous-marins. Le sac présente deux bordures longitudinales susceptibles d'une part d'être écartées en continu pour former une ouverture sur le dessus du sac, permettant l'introduction de l'organe d'injection, et d'autre part d'être assemblées en aval de ce dernier.Known from US Pat. No. 4,480,943 is a device for covering a pipe deposited on the seabed, arranged to deploy on the pipe an elongated bag having in cross section a flattened shape, which is filled with 'A hardenable material such as cement from an accompanying ship, the filling of the bag being carried out by an injection member as it is deployed. The bag substantially follows the profile of the covered member before the material injected inside hardens. Protection is thus obtained, in a form adapted to that of the covered member, against mechanical attacks linked for example to navigation or fishing. The bag can also be used to hold the covered organ in place against the action of underwater currents. The bag has two longitudinal edges which can be separated on the one hand to form an opening on the top of the bag, allowing the introduction of the injection member, and on the other hand to be assembled downstream. of the last.
On a proposé dans le brevet américain précité de munir les bordures longitudinales d'une fermeture à glissière, qui défile lors du déploiement du sac au travers d'une navette conformée à l'avant pour écarter latéralement les bordures longitudinales et former l'ouverture d'introduction de l'organe d'injection, et conformée à 1 ' arrière pour rapprocher lesdites bordures longitudinales et refermer le sac. on a également proposé dans le même brevet américain antérieur de superposer en aval de l'ouverture d'introduction de l'organe d'injection les bordures longitudinales du sac pour les assembler par agrafage.It has been proposed in the aforementioned US patent to provide the longitudinal edges with a zipper, which scrolls during the deployment of the bag through a shuttle shaped at the front to laterally spread the longitudinal edges and form the opening d 'introduction of the injection member, and shaped at one rear to bring said longitudinal edges and close the bag. it has also been proposed in the same prior American patent to superimpose downstream of the opening for introducing the injection member the longitudinal edges of the bag to assemble them by stapling.
Le dispositif décrit dans le brevet américain US 4 480 943 n'offre pas entière satisfaction, et pose notamment des problèmes de fiabilité des moyens utilisés pour ouvrir et refermer le sac en continu.The device described in US Pat. No. 4,480,943 does not offer complete satisfaction, and poses in particular problems of reliability of the means used to open and close the bag continuously.
L'invention vise à effectuer aisément et de manière fiable le remplissage en continu du sac. L'invention y parvient en proposant un dispositif pour le remplissage en continu par un matériau durcissable d'un sac de forme allongée et présentant en section transversale une forme aplatie, ce sac présentant en outre sur sa face supérieure deux bordures longitudinales séparableε et se recouvrant initialement, ie dispositif comportant un organe d'injection permettant d'injecter dans le sac un matériau durcissable et une navette destinée à être déplacée le long du sac, cette navette étant conformée à l'avant pour écarter en continu lesdites bordures longitudinales l'une de l'autre au moins dans une direction perpendiculaire au plan du sac et définir une ouverture latérale s'étendant sur une longueur donnée pour permettre l'introduction de l'organe d'injection dans le sac, la navette étant en outre conformée à l'arrière pour rapprocher en continu lesdites bordures longitudinales afin de les faire se recouvrir et réaliser leur assemblage. Dans une réalisation particulière dudit dispositif, le sac' présente à l'extrémité latérale desdites bordures longitudinales des nervures de guidage et la navette comporte un guide externe et un guide interne présentant des gorges conformées pour guider lesdites nervures, le guide externe se prolongeant en amont du guide interne, les deux guides s'étendant dans des plans respectifs parallèles dont l'écartement correspond sensiblement à la distance entre lesdites nervures lorsque les bordures longitudinales du sac sont assemblées de manière à refermer le sac, ladite navette comportant en outre à l'avant un organe écarteur s'étendant latéralement entre lesdits plans et placé en amont du guide interne pour écarter les bordures longitudinales du sac lorsque ce dernier défile à travers la navette, la navette comportant à l'arrière un organe presseur, situé en aval du guide externe, pour réassembler lesdites bordures longitudinales. Grâce à l'invention, on peut munir les bordures longitudinales du sac de moyens de fixation amovible du type bande velcro et assembler initialement les bordures longitudinales de la réserve de sac non rempli, tout en assurant d'une manière particulièrement fiable leur séparation puis leur nouvel assemblage.The invention aims to easily and reliably perform continuous filling of the bag. The invention achieves this by proposing a device for the continuous filling with a hardenable material of a bag of elongated shape and having in cross section a flattened shape, this bag also having on its upper face two separable and overlapping longitudinal edges. initially, ie device comprising an injection member making it possible to inject a hardenable material into the bag and a shuttle intended to be moved along the bag, this shuttle being shaped at the front to continuously spread said longitudinal edges one on the other at least in a direction perpendicular to the plane of the bag and define a lateral opening extending over a given length to allow the introduction of the injection member into the bag, the shuttle being further conformed to the 'rear to continuously bring said longitudinal edges to make them overlap and perform their assembly. In a particular embodiment of said device, the bag 'has at the lateral end of said longitudinal edges of the guide ribs and the shuttle comprises an external guide and an internal guide having grooves shaped to guide said ribs, the external guide extending upstream of the internal guide, the two guides extending in respective parallel planes whose spacing corresponds substantially to the distance between said ribs when the longitudinal edges of the bag are assembled so as to close the bag, said shuttle further comprising at the before a spacer member extending laterally between said planes and placed upstream of the internal guide to spread the longitudinal edges of the bag when the latter passes through the shuttle, the shuttle comprising at the rear a pressure member, located downstream of the guide external, to reassemble said longitudinal edges. Thanks to the invention, it is possible to provide the longitudinal edges of the bag with removable fastening means of the Velcro strip type and to initially assemble the longitudinal edges of the reserve of unfilled bag, while ensuring in a particularly reliable manner their separation and then their new assembly.
Un tel dispositif de remplissage permet en outre d'éviter, si les bordures longitudinales du sac non rempli ont été assemblées avec un certain décalage latéral, que les moyens de fixation amovible, qui sont de préférence du type bande velcro comme indiqué ci-dessus, ne soient soumis lors de leur passage dans la navette à des efforts de cisaillement susceptibles de les détériorer. L'invention a encore pour objet un nouveau procédé de recouvrement d'un organe de forme allongée, tel qu'un câble ou une conduite déposé sur le fond sous-marin, du type dans lequel on déploie sur l'organe à recouvrir un sac de forme allongée et du type dans lequel on déplace le long du sac un dispositif de remplissage pour effectuer le remplissage du sac par un matériau durcissable à mesure du déplacement relatif du sac et dudit dispositif de remplissage, caractérisé par le fait qu'il comprend l'étape consistant à injecter, au moyen d'un organe d'injection, ledit matériau durcissable au sein d'une quantité dudit matériau durcissable préalablement introduite dans le sac et encore fluide. Ainsi, l'injection du matériau durcissable peut s'effectuer sans contact avec l'eau et l'on peut adjoindre au matériau durcissable une charge d'éléments métalliques de renfort, sans craindre un problème de corrosion de ces éléments métalliques par 1 'eau. La présence des éléments métalliques accroît notablement la résistance mécanique lorsque le matériau durcissable s'est figé et il devient possible grâce à l'invention, pour une résistance mécanique équivalente, d'utiliser une quantité de matériau durcissable nettement plus faible que dans l'art antérieur. L'économie de matériau durcissable qu'il est possible de réaliser grâce à l'invention permet de diminuer, voire d'éviter, les ravitaillements en matériau durcissable du navire accompagnateur, ce qui est particulièrement intéressant lorsque le recouvrement du câble ou de la conduite s'effectue en haute mer. Dans une mise en oeuvre particulière du procédé selon l'invention, lesdits éléments métalliques présentent une forme allongée et leur longueur est comprise entre 2 et 3 cm et leurSuch a filling device also makes it possible to avoid, if the longitudinal edges of the unfilled bag have been assembled with a certain lateral offset, that the removable fixing means, which are preferably of the Velcro strip type as indicated above, are not subjected during their passage in the shuttle to shearing forces liable to deteriorate them. The subject of the invention is also a new method of covering an elongated member, such as a cable or a pipe deposited on the seabed, of the type in which a bag is deployed on the member to be covered. of elongated shape and of the type in which a filling device is moved along the bag for filling the bag with a hardenable material as the bag and said filling device move relative, characterized in that it comprises the step consisting in injecting, by means of an injection member, said hardenable material into an amount of said hardenable material previously introduced into the bag and still fluid. Thus, the injection of the hardenable material can be carried out without contact with water and one can add to the hardenable material a load of reinforcing metallic elements, without fear of a problem of corrosion of these metallic elements by water. . The presence of the metallic elements notably increases the mechanical resistance when the hardenable material has frozen and it becomes possible thanks to the invention, for equivalent mechanical resistance, to use a quantity of hardenable material clearly lower than in the art. prior. The saving in hardenable material which it is possible to achieve thanks to the invention makes it possible to reduce, or even avoid, the supplies of hardenable material from the accompanying ship, which is particularly advantageous when covering the cable or the pipe. takes place on the high seas. In a particular implementation of the method according to the invention, said metallic elements have a shape elongated and their length is between 2 and 3 cm and their
2 2 section transversale entre 0,4 mm et 0,8 mm2 2 cross section between 0.4 mm and 0.8 mm
Dans une mise en oeuvre particulière du procédé selon l'invention, lorsqu'un tronçon de sac est rempli, on déplace l'organe d'injection par rapport au sac pour le retirer du matériau durcissable contenu dans le sac et l'on ferme ensuite le sac selon une ligne de fermeture transversale, puis on sépare éventuellement la réserve de sac non rempli du tronçon de sac rempli et fermé.In a particular implementation of the method according to the invention, when a bag section is filled, the injection member is moved relative to the bag to remove it from the hardenable material contained in the bag and then closed the bag along a transverse closure line, then optionally separating the unfilled bag reserve from the filled and closed section of bag.
De préférence, le sac est fermé par agrafage après que l'organe d'injection ait été amené dans une position dans laquelle il ne gêne pas la fermeture du sac.Preferably, the bag is closed by stapling after the injection member has been brought into a position in which it does not hinder the closing of the bag.
Dans une mise en oeuvre particulière du procédé selon l'invention, le sac comporte deux parois principales opposées, reliées par des straps dont la longueur à l'état tendu détermine l'épaisseur du sac après remplissage. Avantageusement, chaque paroi principale du sac est constituée par une toile tissée et lesdits straps sont constitués par des fils venus de tissage avec cette toile par une technique de tissage du type velours double pièce face-à-face. Les inventeurs ont constaté de façon assez surprenante que, ' malgré l'emploi d'éléments de renfort de forme allongée et la présence des fils susceptibles de s'opposer, par une action de tamisage, à une bonne dispersion des éléments de renfort, les éléments de renfort pouvaient être dispersés lors du remplissage à l'intérieur du sac d'une façon relativement homogène.In a particular implementation of the method according to the invention, the bag has two opposite main walls, connected by straps whose length in the stretched state determines the thickness of the bag after filling. Advantageously, each main wall of the bag is made up of a woven fabric and said straps are made up of threads woven from this fabric using a weaving technique of the two-piece velor type facing each other. The inventors have found, surprisingly enough, that, despite the use of reinforcing elements of elongated shape and the presence of threads liable to oppose, by a screening action, a good dispersion of the reinforcing elements, the reinforcing elements could be dispersed during filling inside the bag in a relatively homogeneous manner.
Une tentative d'explication résiderait danβ le fait que l'on améliore la diffusion des éléments de renfort en injectant in situ le matériau durcissable, la direction de l'écoulement à l'intérieur du sac en dehors de l'organe d'injection présentant une composante transversale non négligeable.An attempt to explain this would lie in the fact that the diffusion of the reinforcing elements is improved by injecting the hardenable material in situ, the direction of flow inside the bag outside the injection member having a significant transverse component.
Par ailleurs, bien que l'on ait pu craindre a priori qu'il se forme des interstices entre les fils de trame des toiles tissées au niveau du raccordement d'un fil de liaison lorsque ce dernier est tendu, lesquels interstices auraient pu créer des fuites de matériau durcissable encore fluide, les inventeurs ont constaté que ce problème pouvait être surmonté grâce à une répartition sensiblement uniforme des straps, en nombre suffisant, et qu'une telle répartition des straps n'empêchait pas outre mesure une dispersion suffisante des éléments métalliques de renfort à l'intérieur du sac.Furthermore, although it was a priori fearable that interstices would form between the weft threads of the woven fabrics at the connection of a connecting thread when the latter is taut, which interstices could have created leaks of curable material which is still fluid, the inventors have found that this problem can be overcome thanks to a substantially uniform distribution of the straps, in sufficient number, and that such a distribution of the straps did not prevent sufficient dispersion of the metallic reinforcing elements inside the bag.
Dans une mise en oeuvre particulière de l'invention, on utilise l'organe d'injection pour éloigner les straps desdites bordures longitudinales.In a particular implementation of the invention, the injection member is used to move the straps away from said longitudinal edges.
L'organe d'injection est dans ce cas avantageusement conformé pour constituer à sa rentrée dans le sac un déflecteur apte à éloigner les straps desdites bordures longitudinales.The injection member is in this case advantageously shaped so as to constitute, when it enters the bag, a deflector capable of moving the straps away from said longitudinal edges.
Ainsi, on évite que les straps soient pris entre les bordures longitudinales du sac lorsque ces dernières sont ramenées l'une vers l'autre pour être réassemblées, ce qui aurait pour effet de gêner l'expansion du sac lors du remplissage et de diminuer la résistance de l'assemblage des bordures longitudinales.Thus, it is avoided that the straps are caught between the longitudinal edges of the bag when the latter are brought towards one another to be reassembled, which would have the effect of hampering the expansion of the bag during filling and of reducing the resistance of the assembly of the longitudinal edges.
L'organe d'injection est en outre avantageusement conformé pour déployer au moins partiellement les straps situés au voisinage de la zone dans laquelle le matériau durcissable est injecté.The injection member is also advantageously shaped to at least partially deploy the straps located in the vicinity of the zone into which the hardenable material is injected.
L'invention a encore pour objet un sac de forme allongée susceptible d'être utilisé comme enveloppe pour le coulage à l'intérieur du sac d'un matériau fluide en vue de réaliser un organe de protection de forme allongée, ledit sac présentant en section transversale une forme générale aplatie, comportant des parois principales opposées, constituées par des toiles tissées et reliées par des straps venus de tissage par une technique de tissage du type velours double pièce face-à-face avec lesdites parois principales, la longueur à l'état tendu deβdits straps déterminant l'épaisseur du sac à l'état rempli.The subject of the invention is also a bag of elongated shape capable of being used as an envelope for pouring inside the bag of a fluid material in order to produce a protective member of elongated shape, said bag having in section transverse a generally flattened shape, comprising opposite main walls, constituted by woven fabrics and connected by straps coming from weaving by a weaving technique of the velvet type double piece face-to-face with said main walls, the length to the stretched state of beta straps determining the thickness of the bag in the filled state.
L'invention a encore pour objet un organe de protection de forme allongée, constitué par un sac tel que précité rempli par un matériau durcissable, de préférence du ciment, et comportant avantageusement une charge de renfort constituée d'éléments métalliques.The subject of the invention is also a protective member of elongated shape, consisting of a bag as mentioned above filled with a hardenable material, preferably cement, and advantageously comprising a reinforcing filler made up of metallic elements.
D ' autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée qui va suivre, d'un exemple de réalisation non limitatif de l'invention, et à l'examen du dessin annexé sur lequel : la figure 1 est une vue schématique en perspective illustrant l'utilisation d'un dispositif selon l'invention,Other characteristics and advantages of the present invention will appear on reading the detailed description which follows, of a non-limiting embodiment of the invention, and on examining the appended drawing in which: FIG. 1 is a schematic perspective view illustrating the use of a device according to the invention,
- la figure 2 est une vue schématique en coupe d'un organe de forme allongée recouvert par un sac de protection conformément à l'invention, la figure 3 est une vue schématique en coupe d'un dispositif conforme à un exemple de réalisation de l'invention,- Figure 2 is a schematic sectional view of an elongated member covered by a protective bag according to the invention, Figure 3 is a schematic sectional view of a device according to an exemplary embodiment of the 'invention,
- la figure 4 est une vue schématique de côté de l'organe d'injection et de la navette, - la figure 5 est une vue schématique de dessus selon la flèche V de la figure 4,FIG. 4 is a diagrammatic side view of the injection member and of the shuttle, FIG. 5 is a diagrammatic view from above according to the arrow V in FIG. 4,
- la figure 6 est une vue schématique de côté représentant la navette,FIG. 6 is a schematic side view representing the shuttle,
- la figure 7 est une vue schématique de face selon la flèche VII de la figure 6, les figures 8 à 10 montrent différentes sections transversales du sac en cours de remplissage,FIG. 7 is a schematic front view according to arrow VII of FIG. 6, FIGS. 8 to 10 show different cross sections of the bag during filling,
- la figure 11 est une vue schématique analogue à la figure 3 montrant le dispositif à la fin du remplissage d'un tronçon de sac et avant la fermeture de ce dernier et sa découpe.- Figure 11 is a schematic view similar to Figure 3 showing the device at the end of filling a bag section and before the closure of the latter and its cutting.
On a représenté schématiquement sur la figure 1 et en perspective un câble 1 de transport d'énergie électrique posé sur le fond sous-marin et en cours de recouvrement par un sac 2 , déployé et rempli en continu par un véhicule à chenilles 3, relié à un navire accompagnateur 4 par une conduite 5 d'amenée d'un matériau durcissable à injecter dans le sac, par un câble de contrôle 6, et par un câble de levage 7.There is shown schematically in Figure 1 and in perspective a cable 1 for transporting electrical energy laid on the seabed and being covered by a bag 2, deployed and continuously filled by a tracked vehicle 3, connected to an accompanying ship 4 by a pipe 5 for supplying a hardenable material to be injected into the bag, by a control cable 6, and by a lifting cable 7.
Bien entendu, on ne sort pas du cadre de l'invention en utilisant le véhicule 3 pour recouvrir tout autre organe de forme allongée tel qu'une conduite de transport d'hydrocarbures par exemple ou pour remplir un sac de forme allongée.Of course, it is not going beyond the scope of the invention to use the vehicle 3 to cover any other elongated member such as a pipe for transporting hydrocarbons for example or to fill an elongated bag.
Dans l'exemple particulier qui est décrit, le sac est déployé sur l'organe à recouvrir par le véhicule à chenilles 3.In the particular example which is described, the bag is deployed on the member to be covered by the tracked vehicle 3.
On ne sort pas du cadre de l'invention en déposant d'abord partiellement ou entièrement le sac à l'état non rempli sur l'organe à recouvir, par exemple IOΓB de la pose de ce dernier, puis en déplaçant le long du sac ainsi déposé le véhicule à chenilles 3 pour remplir en continu le sac à mesure du déplacement du véhicule.We do not depart from the scope of the invention by first partially or entirely depositing the bag in the unfilled state on the member to be covered, for example IOΓB of the installation of the latter, then moving along the bag thus deposited the tracked vehicle 3 to continuously fill the bag as the vehicle moves.
Dans ce cas les moyens pour loger une réserve de sac non rempli sont remplacés par des moyens pour guider le sac non rempli et l'amener dans une position adaptée à son remplissage.In this case, the means for accommodating a reserve of unfilled bag are replaced by means for guiding the unfilled bag and bringing it into a position suitable for its filling.
Dans l'exemple particulier décrit, le matériau durcissable est un coulis de ciment dont la densité est comprise entre 1,6 etIn the particular example described, the curable material is a cement grout whose density is between 1.6 and
2,4, de préférence entre 1,8 et 2,1 comportant une charge d'éléments de renfort métalliques de forme allongée, en acier, de longueur comprise entre 2 et 3 cm et de section transversale comprise2.4, preferably between 1.8 and 2.1 comprising a load of metal reinforcing elements of elongated shape, of steel, of length between 2 and 3 cm and of cross section included
2 entre 0,4 et 0,8 mm , et dont la proportion dans le matériau2 between 0.4 and 0.8 mm, and the proportion of which in the material
3 durcissable est de l'ordre de 20 à 80 kg par m de matériau durcissable. Pour des valeurs de densité inférieure à 1,6, les éléments métalliques ont tendance à décanter dans le sac et pour des valeurs supérieures à 2,4 l'injection du coulis devient difficile.3 curable is of the order of 20 to 80 kg per m of curable material. For density values less than 1.6, the metallic elements tend to settle in the bag and for values greater than 2.4, grout injection becomes difficult.
Le véhicule 3 est autotracté et il est muni de façon connue en soi de détecteurs non représentés qui lui permettent de suivre l'organe à recouvrir sans l'intervention de plongeurs.The vehicle 3 is self-propelled and it is provided in a manner known per se with detectors not shown which allow it to follow the member to be covered without the intervention of divers.
De par l'absence de ces derniers, il est possible d'effectuer la dépose du sac de façon relativement aisée et peu coûteuse, même lorsque le fond sous-marin est à grande profondeur.By the absence of these, it is possible to carry out the removal of the bag relatively easily and inexpensively, even when the seabed is at great depth.
Le matériau durcissable est injecté sous pression à l'état encore fluide dans le sac de sorte que ce dernier peut se conformer au profil de l'organe à recouvrir, comme illustré sur la coupe transversale de la figure 2.The curable material is injected under pressure in the still fluid state into the bag so that the latter can conform to the profile of the member to be covered, as illustrated in the cross section of FIG. 2.
Le sac 2 est de forme allongée, présente en section transversale une forme générale aplatie et comporte deux parois principales 8 et 9 se réunissant aux extrémités latérales 10 du sac et reliées de place en place par des straps 11 dont la longueur à l'état tendu détermine l'épaisseur de matériau protégeant l'organe recouvert .The bag 2 is of elongated shape, has a generally flattened cross-section and has two main walls 8 and 9 meeting at the lateral ends 10 of the bag and connected from place to place by straps 11 whose length in the stretched state determines the thickness of material protecting the covered organ.
On entend par sac de forme allongée un sac dont la longueur est supérieure d'au moins dix fois à la largeur.By elongated bag is meant a bag whose length is at least ten times greater than the width.
A titre indicatif, la largeur du sac est par exemple de l'ordre de 2 m et son épaisseur comprise entre 10 et 50 cm, et de préférence entre 15 et 30 cm. La longueur d'un tronçon de sac peut atteindre par exemple 500 m, voire plusieurs kilomètres. Le sac constitue, lorsque le matériau qui le remplit a durci, une barrière de protection contre les agressions mécaniques externes, mais également vis-à-vis de la corrosion et peut en outre réduire la déperdition thermique dans le cas où l'organe recouvert est une conduite de transport d'hydrocarbures chauds.As an indication, the width of the bag is for example of the order of 2 m and its thickness between 10 and 50 cm, and preferably between 15 and 30 cm. The length of a bag section can reach for example 500 m, or even several kilometers. The bag constitutes, when the material which fills it has hardened, a protective barrier against external mechanical attack, but also against corrosion and can also reduce the heat loss in the case where the covered organ is a pipe for transporting hot hydrocarbons.
Lorsque le sac 2 est déployé sur le fond sous-marin, il repose par sa paroi inférieure 8 sur le fond et contre le câble 1. La paroi supérieure 9 comporte dans sa région médiane deux bordures longitudinales 12 et 13 se recouvrant et pouvant être assemblées de façon amovible à l'aide de moyens de fixation 14 et 15 s ' accrochant par contact, du type bande velcro.When the bag 2 is deployed on the seabed, it rests by its bottom wall 8 on the bottom and against the cable 1. The top wall 9 has in its central region two longitudinal edges 12 and 13 overlapping and which can be assembled removably by means of fastening means 14 and 15 hooking by contact, of the Velcro strip type.
Les bordures longitudinales 12 et 13 sont munies sur leurs bords libres de nervures de guidage respectives 16 et 17, de section transversale sensiblement circulaire dans l'exemple décrit. Les straps 11 sont venus de tissage avec les parois principales 8 et 9 par une technique dite du velours double pièce face-à-face, connue en elle-même et gui ne sera pas décrite plus en détail.The longitudinal edges 12 and 13 are provided on their free edges with respective guide ribs 16 and 17, of substantially circular cross section in the example described. The straps 11 came from weaving with the main walls 8 and 9 by a technique called velvet double piece face-to-face, known in itself and mistletoe will not be described in more detail.
L'implantation des straps 11 est choisie de manière à conférer au sac rempli une épaisseur prédéterminée sensiblement constante, fonction de la longueur desdits straps, sans néanmoins que la présence des straps à 1 ' intérieur du sac empêche la bonne répartition des éléments de renfort métalliques adjoints au coulis de ciment. Dans l'exemple particulier décrit, les straps 11 sont répartis sensiblement en quinconce avec un pas de 6 cm dans le sens longitudinal du sac et un écartement de 3 cm entre deux rangées de straps. Il n'y a pas de straps 11 entre les bordures longitudinales 12 et 13 et pour compenser cette absence, du point de vue de la résistance mécanique du sac à la pression du coulis de ciment, les straps adjacents aux bordures longitudinales 12 et 13 sont doublés.The implantation of the straps 11 is chosen so as to give the filled bag a predetermined thickness which is substantially constant, depending on the length of the said straps, without however the presence of the straps inside the bag preventing the good distribution of the metallic reinforcing elements. added to the cement grout. In the particular example described, the straps 11 are distributed in a staggered fashion with a pitch of 6 cm in the longitudinal direction of the bag and a spacing of 3 cm between two rows of straps. There are no straps 11 between the longitudinal edges 12 and 13 and to compensate for this absence, from the point of view of the mechanical resistance of the bag to the pressure of the cement grout, the straps adjacent to the longitudinal edges 12 and 13 are doubled.
On a illustré sur la figure 3, de façon schématique, le déploiement et le remplissage en continu du sac 2. Les termes "avant", "arrière", "amont", "aval", sont employés dans la présente description en se référant au sens de défilement du sac par rapport au véhicule à chenilles 3 ; les termes "avant" et "amont" concernent ainsi des éléments ou parties d'éléments tournés vers la portion de sac non rempli et les termes "arrière" et "aval" se rapportent à des éléments ou parties d'éléments situés du côté du sac qui est rempli.Is illustrated in Figure 3, schematically, the deployment and continuous filling of the bag 2. The terms "front", "rear", "upstream", "downstream", are used in this description with reference in the direction of travel of the bag relative to the tracked vehicle 3; the terms "before" and "upstream" thus relate to elements or parts of elements facing the unfilled bag portion and the terms "rear" and "downstream" refer to elements or parts of elements located on the side of the bag which is filled.
Dans l'exemple particulier décrit, le sac 2 est stocké sur le véhicule 3 en étant enroulé sur une bobine 18 située à l'avant du véhicule avec les bordures longitudinales 12, 13 assemblées.In the particular example described, the bag 2 is stored on the vehicle 3 while being wound up on a reel 18 situated at the front of the vehicle with the longitudinal edges 12, 13 assembled.
La réserve de sac stockée sur la bobine 18 est déroulée en continu de façon coordonnée avec 1 ' avancement du véhicule 3 et passe au-dessus d'une table de guidage 19, inclinée vers le bas et vers l'arrière du véhicule jusqu'à une faible distance du fond sous-marin, de sorte que chaque portion de sac remplie est déposée en douceur sur l'organe à recouvrir et sur le fond sous-marin.The bag reserve stored on the reel 18 is continuously unwound in a coordinated fashion with the advancement of the vehicle 3 and passes over a guide table 19, inclined downwards and towards the rear of the vehicle until a short distance from the seabed, so that each portion of the filled bag is gently deposited on the organ to be covered and on the seabed.
Le véhicule 3 comporte également une agrafeuse découpeuse 20 pour fermer transversalement et détacher un tronçon de sac rempli.The vehicle 3 also includes a cutting stapler 20 for closing transversely and detaching a section of filled bag.
L'injection du matériau durcissable dans le sac s'effectue au moyen d'un tuyau d'injection 21, solidaire en partie haute d'un support 22 capable d'être déplacé sur une structure de guidage 23, cette dernière étant solidaire de la table de guidage 19 et disposée au-dessus et parallèlement à celle-ci.The injection of the hardenable material into the bag is carried out by means of an injection pipe 21, integral at the top with a support 22 capable of being moved on a guide structure 23, the latter being integral with the guide table 19 and disposed above and parallel to it.
Le tuyau d'injection 21 est relié à son extrémité supérieure a un flexible 24 lui-même relié à un embout 25 connecté à la conduite 5.The injection pipe 21 is connected at its upper end to a hose 24 itself connected to a nozzle 25 connected to the pipe 5.
Une navette 26 est prévue pour d'une part séparer les bordures longitudinales 12 et 13 afin de créer une ouverture permettant l'introduction du tuyau d'injection 21 dans le sac et d'autre part assembler ensuite les bordures longitudinales, comme cela sera précisé dans la suite.A shuttle 26 is provided on the one hand to separate the longitudinal edges 12 and 13 in order to create an opening allowing the introduction of the injection pipe 21 into the bag and on the other hand then to assemble the longitudinal edges, as will be specified in the following.
La navette 26 est solidaire du support 22 précité, et comme représenté plus particulièrement sur les figures 4 à 7, comporte un guide externe 27 et un guide interne 28 présentant des gorges conformées pour guider respectivement les nervures 16 et 17.The shuttle 26 is integral with the aforementioned support 22, and as shown more particularly in FIGS. 4 to 7, comprises an external guide 27 and an internal guide 28 having grooves shaped to guide the ribs 16 and 17 respectively.
Le guide externe 27 se prolonge, eu égard au sens de défilement du sac sur la table de guidage 19, en amont du guide interne 28. Comme on peut le constater plus particulièrement sur les figures 5 et 7, les guides interne 28 et externe 27 suivent chacun des trajets infléchis dans des plans respectifs verticaux, l'écartement correspondant sensiblement à l'écartement des nervures de guidage 16 et 17 lorsque les bordures longitudinales du sac sont assemblées de manière à refermer le sac.The external guide 27 is extended, having regard to the direction of travel of the bag on the guide table 19, upstream of the internal guide 28. As can be seen more particularly in FIGS. 5 and 7, the internal guides 28 and external 27 follow each of the inflected paths in respective vertical planes, the spacing corresponding substantially to the spacing of the guide ribs 16 and 17 when the longitudinal edges of the bag are assembled so as to close the bag.
La navette 26 comporte en outre un organe écarteur 29 situé en amont du guide interne 28 et présentant une extrémité avant 30 venant s ' insérer entre les bordures longitudinales 12 et 13 pour les séparer par effet de coin, et un organe presseur 31 situé en aval du guide externe 27 et en regard d'une semelle 32, pour réassembler les bordures longitudinales 12 et 13 avant qu'elles ne quittent la navette 26.The shuttle 26 further comprises a spacer member 29 located upstream of the internal guide 28 and having a front end 30 which is inserted between the longitudinal edges 12 and 13 to separate them by wedge effect, and a pressure member 31 located downstream of the external guide 27 and opposite a sole 32, to reassemble the longitudinal edges 12 and 13 before they leave the shuttle 26.
Le tuyau d'injection 21 présente une portion 33, s'étendant entre les guides externe 27 et interne 28, orientée selon un axe I contenu dans un plan sensiblement parallèle au plan de la table de guidage 19 et formant un angle de 45° environ avec la direction de défilement du sac. L'axe I est ainsi sensiblement parallèle au plan du sac qui défile sur la table de guidage 19.The injection pipe 21 has a portion 33, extending between the external guides 27 and internal guides 28, oriented along an axis I contained in a plane substantially parallel to the plane of the guide table 19 and forming an angle of approximately 45 °. with the direction of travel of the bag. The axis I is thus substantially parallel to the plane of the bag which runs on the guide table 19.
La portion 33 se raccorde sur une portion 34 rectiligne dont l'axe J s'étend parallèlement à la direction de déplacement du sac sur la table de guidage et parallèlement à cette dernière. La portion 34 se raccorde, par une portion infléchie 35, à une portion rectiligne de grande longueur, d'axe K parallèle à l'axe J précité et située sensiblement dans le plan médian du sac lorsque ce dernier défile sur la table de guidage 19. A titre indicatif, dans l'exemple décrit, la longueur des portions 35 et 36 réunies, mesurée parallèlement à la direction de défilement du Bac, atteint lm80.The portion 33 is connected to a rectilinear portion whose axis J extends parallel to the direction of movement of the bag on the guide table and parallel to the latter. The portion 34 is connected, by an inflected portion 35, to a rectilinear portion of great length, of axis K parallel to the above-mentioned axis J and situated substantially in the median plane of the bag when the latter scrolls on the guide table 19 As an indication, in the example described, the length of the combined portions 35 and 36, measured parallel to the running direction of the tray, reaches lm80.
On va maintenant décrire plus particulièrement la façon dont la navette 26 agit sur les bordures longitudinales 12 et 13, en référence aux figures 8 à 10, qui montrent différentes sections transversales du sac, respectivement au niveau des traits de coupe VIII, IX et X de la figure 3.We will now describe more particularly the way in which the shuttle 26 acts on the longitudinal edges 12 and 13, with reference to FIGS. 8 to 10, which show different cross sections of the bag, respectively at the cut lines VIII, IX and X of Figure 3.
Le sac 2 arrive au contact de la navette 26 avec les parois 8 et 9 sensiblement l'une contre l'autre et les bordures longitudinales 12 et 13 assemblées comme représenté sur la figure 8. Les moyens de fixation 14 et 15 sont protégés de l'extérieur grâce au fait qu'ils sont assemblés. On évite ainsi que les bandes velcro ne perdent leur efficacité en cas de salissures. La portion de la nervure 17 gui s'engage à l'intérieur du guide externe 27 est déviée vers l'extérieur tandis que l'organe écarteur 29 sépare, par une traction dirigée dans un plan vertical, les bordures longitudinales 12 et 13 en amont du guide interne 28. Une ouverture latérale est ainsi formée dans le sac, par laquelle le tuyau d'injection 21 pénètre, par le côté, à l'intérieur du sac, comme représenté sur la figure 9. L'axe I est sensiblement parallèle au plan des bordures longitudinales disposées face-à-face de part et d'autre de la portion 33 du tuyau d'injection. Comme on pourra le remarquer à l'examen de la figure 9, la portion 33 du tuyau d'injection 21 constitue avantageusement un déflecteur qui éloigne les straps 11 de l'ouverture formée entre les bordures longitudinales 12 et 13. On évite ainsi que, lors du réassemblage des bordures longitudinales 12 et 13, les straps 11 ne soient pris en sandwich entre les bordures longitudinales 12 et 13 et entravent par la suite l'expansion du sac lors du remplissage par le matériau durcissable.The bag 2 comes into contact with the shuttle 26 with the walls 8 and 9 substantially one against the other and the longitudinal edges 12 and 13 assembled as shown in FIG. 8. The fixing means 14 and 15 are protected from the exterior thanks to the fact that they are assembled. This prevents the velcro strips from losing their effectiveness in the event of soiling. The portion of the rib 17 which engages inside the external guide 27 is deflected towards the outside while the spacer member 29 separates, by a traction directed in a vertical plane, the longitudinal edges 12 and 13 upstream of the internal guide 28. A lateral opening is thus formed in the bag, through which the injection pipe 21 penetrates, from the side, inside the bag, as shown in FIG. 9. The axis I is substantially parallel in the plane of the longitudinal edges arranged face-to-face on either side of the portion 33 of the injection pipe. As will be seen on examining FIG. 9, the portion 33 of the injection pipe 21 advantageously constitutes a deflector which moves the straps 11 away from the opening formed between the longitudinal edges 12 and 13. This prevents, during the reassembly of the longitudinal edges 12 and 13, the straps 11 are not sandwiched between the longitudinal edges 12 and 13 and subsequently impede the expansion of the bag during filling with the hardenable material.
Le guide interne 28 et la semelle 32 dévient la bordure longitudinale 13 vers l'extérieur, en aval de la portion 33 du tuyau d'injection, et la rapproche de la bordure longitudinale 12 pour l'assemblage des deux bordures longitudinales par pressage entre l'organe presseur 31 et la semelle 32.The internal guide 28 and the sole 32 deflect the longitudinal edge 13 towards the outside, downstream of the portion 33 of the injection pipe, and bring it closer to the longitudinal edge 12 for assembling the two longitudinal edges by pressing between the pressure member 31 and sole 32.
On a représenté sur la figure 10 le sac en cours de remplissage. On remarquera sur cette figure que les straps 11 sont pratiquement tendus, leur longueur déterminant l'épaisseur maximale de matériau remplissant le sac 2.There is shown in Figure 10 the bag being filled. It will be noted in this figure that the straps 11 are practically stretched, their length determining the maximum thickness of material filling the bag 2.
La vitesse de déroulement du sac est choisie en fonction du débit de matériau durcissable injecté et de la taille du sac de manière à garder durant le remplissage l'organe d'injection plongé dans le matériau durcissable.The unwinding speed of the bag is chosen as a function of the flow rate of curable material injected and of the size of the bag so as to keep the injection member immersed in the curable material during filling.
On évite ainsi que les éléments de renfort métalliques viennent au contact de l'eau de mer, ce qui aurait pour résultat de provoquer à long terme une corrosion et une diminution de leur efficacité.This avoids the metal reinforcing elements coming into contact with seawater, which would have the result of causing long-term corrosion and a reduction in their effectiveness.
On a représenté sur la figure 11 le véhicule 3 à la fin de l'opération de remplissage d'un tronçon de sac 2, qui doit être fermé transversalement et détaché de la réserve de sac non déployé, enroulée sur la bobine 18.FIG. 11 shows the vehicle 3 at the end of the operation of filling a section of bag 2, which must be closed transversely and detached from the undeployed bag reserve, wound on the reel 18.
Le support 22 est déplacé vers le haut depuis la position inférieure qu'il a conservée pendant le processus de remplissage, de manière à entraîner le tuyau d'injection 21 hors du matériau durcissable contenu dans le sac et au dessus de l'agrafeuse découpeuse 20. Ainsi, le tuyau d'injection 21 ne gêne pas l'agrafage du sac sur toute sa largeur ainsi que sa découpe.The support 22 is moved upwards from the lower position it kept during the filling process, so as to drive the injection pipe 21 out of the hardenable material contained in the bag and above the stapler cutter 20 Thus, the injection pipe 21 does not interfere with the stapling of the bag over its entire width as well as its cutting.
Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation qui vient d'être décrit.Of course, the invention is not limited to the embodiment which has just been described.
On peut notamment utiliser le véhicule 3 non pas en mer mais sur terre pour remplir en continu un sac tel que précité par un matériau injecté dans celui-ci à l'état fluide.One can in particular use the vehicle 3 not at sea but on land to continuously fill a bag as mentioned above with a material injected therein in the fluid state.
Bien que le dispositif selon 1 ' invention convienne tout particulièrement au remplissage d'un sac par un matériau durcissable comportant une charge d'éléments métalliques de renfort, on peut, sans sortir du cadre de l'invention, utiliser des matériaux de remplissage divers, auxquels sont adjoints ou non des charges d'éléments de renfort, métalliques ou non. En outre, bien que la navette 26 de l'exemple de réalisation qui vient d'être décrit convienne tout particulièrement à la séparation puis au réassemblage des bordures longitudinales du sac lorsque celles-ci sont munies de moyens de fixation du type bande velcro, on ne sort pas du cadre de l'invention en assemblant les bordures longitudinales à l'aide d'autres moyens de fixation, par exemple par couture, soudage, ou agrafage, le mode d'ouverture et d'assemblage du sac par écartement puis rapprochement des bordures longitudinales dans une direction comprise dans un plan généralement perpendiculaire au plan du sac permettant un positionnement précis et fiable des bordures longitudinales ainsi qu'une possibilité d'introduire l'organe d'injection par le côté dans le sac et non par le dessus, donc d'utiliser d'une manière aisée l'organe d'injection comme déflecteur pour écarter les straps, comme expliqué plus haut.Although the device according to the invention is particularly suitable for filling a bag with a curable material comprising a load of metallic reinforcing elements, it is possible, without departing from the scope of the invention, to use various filling materials, to which are added or not loads of reinforcing elements, metallic or not. In addition, although the shuttle 26 of the embodiment which has just been described is particularly suitable for separating and then reassembling the longitudinal edges of the bag when these are provided with fastening means of the velcro strip type, does not depart from the scope of the invention by assembling the longitudinal edges using other fixing means, for example by sewing, welding, or stapling, the method of opening and assembling the bag by spacing then reconciliation longitudinal edges in a direction lying in a plane generally perpendicular to the bag plane allowing precise and reliable positioning of the longitudinal edges as well as a possibility of introducing the injection member from the side into the bag and not from above , so to easily use the injection member as a deflector to spread the straps, as explained above.
La réserve de sac non déployée peut être stockée sur le véhicule 3, non pas enroulée sur une bobine comme décrit plus haut, mais repliée en accordéon. Le sac à l'état rempli peut présenter une épaisseur constante selon sa longueur ou variable, la variation d'épaisseur étant facilement obtenue en jouant sur la longueur des straps.The undeployed bag reserve can be stored on the vehicle 3, not wound on a reel as described above, but folded in accordion. The bag in the filled state can have a constant thickness depending on its length or variable, the thickness variation being easily obtained by varying the length of the straps.
On peut ainsi, au moyen d'un seul sac, recouvrir avec des épaisseurs de matériau variables un organe de forme allongée en adaptant par exemple l'épaisseur de recouvrement à une variation de la taille ou de la nature de l'organe à recouvrir ou à un environnement devenant plus ou moins sévère. It is thus possible, by means of a single bag, to cover with variable thicknesses of material an organ of elongated shape by adapting for example the thickness of covering to a variation of the size or of the nature of the member to be covered or to an environment becoming more or less severe.

Claims

REVENDICATIONS
1. Dispositif pour le remplissage en continu par un matériau durcissable d'un sac (2) de forme allongée et présentant en section transversale une forme aplatie, ce sac présentant en outre sur sa face supérieure deux bordures longitudinales séparables et se recouvrant initialement, le dispositif comportant un organe d'injection (21) permettant d'injecter dans le sac un matériau durcissable et une navette (26) destinée à être déplacée le long du sac, cette navette étant conformée à l'avant pour écarter en continu lesdites bordures longitudinales l'une de l'autre au moins dans une direction perpendiculaire au plan du sac et définir une ouverture latérale s'étendant sur une longueur donnée pour permettre l'introduction de l'organe d'injection dans le sac, la navette étant en outre conformée à 1 ' rrière pour rapprocher en continu lesdites bordures longitudinales afin de les faire se recouvrir et réaliser leur assemblage.1. Device for the continuous filling with a hardenable material of a bag (2) of elongated shape and having in cross section a flattened shape, this bag also having on its upper face two separable longitudinal edges and initially overlapping, the device comprising an injection member (21) making it possible to inject a hardenable material into the bag and a shuttle (26) intended to be moved along the bag, this shuttle being shaped at the front to continuously spread said longitudinal edges from each other at least in a direction perpendicular to the plane of the bag and define a lateral opening extending over a given length to allow the introduction of the injection member into the bag, the shuttle being further shaped at the back to continuously bring said longitudinal edges together so that they overlap and assemble.
2. Dispositif selon la revendication 1, caractérisé par le fait qu'il comporte des moyens de fermeture (20) permettant de fermer un tronçon de sac rempli, et par le fait que ledit organe d'injection est solidaire d'un support mobile (22) de manière à pouvoir être déplacé par rapport auxdits moyens de fermeture.2. Device according to claim 1, characterized in that it comprises closing means (20) making it possible to close a section of filled bag, and in that said injection member is secured to a movable support ( 22) so that it can be moved relative to said closure means.
3. Dispositif selon la revendication 2, caractérisé par le fait que ladite navette (26) est solidaire dudit support mobile (22).3. Device according to claim 2, characterized in that said shuttle (26) is integral with said movable support (22).
4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que ledit sac (2) comporte deux parois principales opposées (8,9) reliées par des straps (11), constitués de préférence par des fils dont la longueur à l'état tendu détermine l'épaisseur du sac rempli.4. Device according to any one of claims 1 to 3, characterized in that said bag (2) has two opposite main walls (8,9) connected by straps (11), preferably constituted by son whose length in the stretched state determines the thickness of the filled bag.
5. Dispositif selon la revendication 4, caractérisé par le fait que ledit organe d'injection (21) est conformé pour constituer à sa rentrée dans ledit sac un déflecteur apte à éloigner leε straps (11) desdites bordures longitudinales.5. Device according to claim 4, characterized in that said injection member (21) is shaped to constitute, upon reentry into said bag, a deflector capable of distancing the straps (11) from said longitudinal edges.
6. Dispositif selon la revendication 4 ou 5, caractérisé par le fait que ledit organe d'injection est conformé pour déployer au moins partiellement les straps (11) situés au voisinage de la zone dans laquelle le matériau durcissable est injecté. 6. Device according to claim 4 or 5, characterized in that said injection member is shaped to deploy at least partially the straps (11) located in the vicinity of the area in which the hardenable material is injected.
7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé par le fait que ledit sac (2) présente à l'extrémité latérale de chaque bordure longitudinale (12,13) une nervure de guidage (16,17) et par le fait que la navette (26) comporte un guide externe (27) et un guide interne (28) présentant des gorges conformées pour guider lesdites nervures (16,17), le guide externe (27) se prolongeant en amont du guide interne (28), les deux guides (27,28) s'étendant dans des plans respectifs parallèles dont l'écartement correspond sensiblement à la distance entre lesdites nervures (16,17) lorsque les bordures longitudinales (12,13) du sac se recouvrent de manière à refermer le sac, ladite navette (26) comportant en outre à l'avant un organe écarteur (29) s'étendant latéralement entre lesdits plans et placé en amont du guide interne pour écarter les bordures longitudinales dudit sac lorsque ce dernier défile au travers de la navette, et à l'arrière un organe presseur (31), situé en aval du guide externe pour réassembler lesdites bordures longitudinales.7. Device according to any one of claims 1 to 6, characterized in that said bag (2) has at the lateral end of each longitudinal edge (12,13) a guide rib (16,17) and by the fact that the shuttle (26) comprises an external guide (27) and an internal guide (28) having grooves shaped to guide said ribs (16,17), the external guide (27) extending upstream of the internal guide ( 28), the two guides (27,28) extending in respective parallel planes whose spacing corresponds substantially to the distance between said ribs (16,17) when the longitudinal edges (12,13) of the bag overlap so as to close the bag, said shuttle (26) further comprising at the front a spacer member (29) extending laterally between said planes and placed upstream of the internal guide to spread the longitudinal edges of said bag when the latter scrolls at across the shuttle, and at the back an organ presser (31), located downstream of the external guide to reassemble said longitudinal edges.
8. Procédé de recouvrement d'un organe (1) de forme allongée, tel qu'un câble ou une conduite déposé sur le fond sous-marin, du type dans lequel on déploie sur l'organe à recouvrir un sac (2) de forme allongée, et du type dans lequel on déplace le long du sac un dispositif de remplissage pour effectuer le remplissage du sac par un matériau durcissable à mesure du déplacement relatif du sac et dudit dispositif de remplissage, caractérisé par le fait qu'il comprend l'étape consistant à injecter, au moyen d'un organe d'injection (21), ledit matériau durcissable au sein d'une quantité dudit matériau durcissable préalablement introduite dans le sac et encore fluide.8. Method for covering an organ (1) of elongated shape, such as a cable or a pipe deposited on the seabed, of the type in which a bag (2) is deployed on the organ to be covered elongated shape, and of the type in which a filling device is moved along the bag to fill the bag with a hardenable material as the bag and said filling device move relative, characterized in that it comprises the step consisting in injecting, by means of an injection member (21), said hardenable material into an amount of said hardenable material previously introduced into the bag and still fluid.
9. Procédé selon la revendication 8, caractérisé par le fait que l'on injecte, conjointement avec ledit matériau durcissable, une charge d'éléments métalliques de renfort.9. Method according to claim 8, characterized in that one injects, together with said curable material, a load of metallic reinforcing elements.
10. Procédé selon la revendication 9, caractérisé par le fait que lesdits éléments métalliques présentent une forme allongée.10. Method according to claim 9, characterized in that said metal elements have an elongated shape.
11. Procédé selon la revendication 10, caractérisé par le fait que la longueur desdits éléments métalliques est comprise entre 2 et 3 cm et leur section transversale est comprise entre 0,411. Method according to claim 10, characterized in that the length of said metal elements is between 2 and 3 cm and their cross section is between 0.4
2 et 0 , 8 mm . 2 and 0.8 mm.
12. Procédé selon l'une quelconque des revendications 9 à 11, caractérisé par le fait que la proportion de ladite charge au sein12. Method according to any one of claims 9 to 11, characterized in that the proportion of said charge within
3 du matériau durcissable est de l'ordre de 20 à 80 kg par m de matériau durcissable.3 of the hardenable material is of the order of 20 to 80 kg per m of hardenable material.
13. Procédé selon l'une quelconque des revendications 8 à 12 , caractérisé par le fait que ledit matériau durcissable est un coulis de ciment de densité comprise entre 1,6 et 2,4.13. Method according to any one of claims 8 to 12, characterized in that said curable material is a cement grout of density between 1.6 and 2.4.
14. Procédé selon l'une quelconque des revendications 8 à 13, caractérisé par le fait que l'introduction de l'organe d'injection dans le sac se fait par une ouverture latérale de ce dernier.14. Method according to any one of claims 8 to 13, characterized in that the introduction of the injection member into the bag is through a lateral opening of the latter.
15. Procédé selon l'une quelconque des revendications 8 à 14, caractérisé par le fait que ledit sac comporte deux bordures longitudinales (12,13) munies de moyens de fixation amovible (14,15) de l'une sur l'autre, de préférence du type bande velcro, l'organe d'injection étant introduit par une ouverture formée entre lesdites bordures longitudinales se faisant face, ces dernières étant séparées par traction en amont de ladite ouverture puis réassemblées par pression en aval.15. Method according to any one of claims 8 to 14, characterized in that said bag comprises two longitudinal edges (12,13) provided with removable fixing means (14,15) from one to the other, preferably of the Velcro strip type, the injection member being introduced by an opening formed between said longitudinal edges facing each other, the latter being separated by traction upstream of said opening and then reassembled by pressure downstream.
16. Procédé selon l'une quelconque des revendications 8 à 15, caractérisé par le fait qu'il comporte l'étape consistant, lorsqu'un' tronçon de sac est rempli, à déplacer l'organe d'injection par rapport au sac pour le sortir complètement du matériau durcissable contenu dans le sac, à fermer ensuite le sac selon une ligne de fermeture transversale, puis à séparer éventuellement la réserve de sac non rempli du tronçon de sac rempli et fermé.16. Method according to any one of claims 8 to 15, characterized in that it comprises the step consisting, when a 'bag section is filled, in moving the injection member relative to the bag to remove it completely from the curable material contained in the bag, then close the bag along a transverse closure line, then optionally separate the reserve of unfilled bag from the filled and closed section of bag.
17. Procédé selon la revendication 16, caractérisé par le fait que ledit sac est fermé par agrafage.17. The method of claim 16, characterized in that said bag is closed by stapling.
18. Procédé selon l'une quelconque des revendications 8 à 17, caractérisé par le fait que ledit sac présente deux parois principales opposées (8,9) reliées par des straps (11) dont la longueur à l'état tendu détermine l'épaisseur du sac après remplissage.18. Method according to any one of claims 8 to 17, characterized in that said bag has two opposite main walls (8,9) connected by straps (11) whose length in the stretched state determines the thickness of the bag after filling.
19. Procédé selon la revendication 18, caractérisé par le fait que chaque paroi principale (8;9) dudit sac est constituée par une toile tissée et par le fait que lesdits straps (11) sont constitués par des fils venus du tissage avec cette toile par une technique de tissage du type velours double pièce face-à-face. 19. The method of claim 18, characterized in that each main wall (8; 9) of said bag is constituted by a woven fabric and by the fact that said straps (11) are formed by son from weaving with this fabric by a weaving technique of the double-piece face-to-face velvet type.
20. Procédé selon l'une des revendications 18 et 19, caractérisé par le fait que l'on utilise l'organe d'injection (21) pour déployer localement les straps (11) à l'endroit d'injection du matériau durcissable dans le sac. 20. Method according to one of claims 18 and 19, characterized in that one uses the injection member (21) to locally deploy the straps (11) at the injection site of the curable material in the bag.
21. Procédé selon l'une guelconque des revendications 18 à21. Method according to one of claims 18 to
20, caractérisé par le fait que l'on utilise l'organe d'injection (21) pour éloigner les straps (11) desdites bordures longitudinales (12,13).20, characterized in that the injection member (21) is used to move the straps (11) away from said longitudinal edges (12,13).
22. Sac (2) de forme allongée susceptible d'être utilisé comme enveloppe pour le coulage à l'intérieur du sac d'un matériau de remplissage et la réalisation d'un organe de protection de forme allongée, ledit sac présentant en section transversale une forme générale aplatie, comportant des parois principales (8,9) opposées constituées par des toiles tissées et reliées par des straps (11) venus de tissage, par une technique de tissage du type velours double pièce face-à-face, avec lesdites parois principales, la longueur à l'état tendu desdits straps (11) déterminant l'épaisseur du sac à l'état rempli.22. Bag (2) of elongated shape capable of being used as an envelope for pouring inside the bag of a filling material and the production of a protective member of elongated shape, said bag having in cross section a generally flattened shape, comprising opposite main walls (8, 9) constituted by woven fabrics and connected by straps (11) coming from weaving, by a weaving technique of the double-piece velor type face-to-face, with said main walls, the length in the stretched state of said straps (11) determining the thickness of the bag in the filled state.
23. Sac selon la revendication 22, caractérisé par le fait que les straps (11) adjacents auxditeε bordures longitudinales sont doublés.23. Bag according to claim 22, characterized in that the straps (11) adjacent to the said longitudinal edges are doubled.
24. Organe de protection de forme allongée, caractérisé par le fait qu'il est constitué par un sac (2) tel que défini dans la revendication 22 ou 23, rempli par un matériau durcissable tel que du ciment .24. Elongated protective member, characterized in that it consists of a bag (2) as defined in claim 22 or 23, filled with a hardenable material such as cement.
25. Organe de protection selon la revendication 24, caractérisé par le fait que ledit matériau durcissable comporte une charge de renfort constituée d'éléments métalliques. 25. Protective member according to claim 24, characterized in that said curable material comprises a reinforcing filler made up of metallic elements.
EP97940186A 1996-09-06 1997-09-05 Device and method for filling a bag with a fluid material and bag suited for this purpose Withdrawn EP0923692A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9610909A FR2753255B1 (en) 1996-09-06 1996-09-06 DEVICE AND METHOD FOR FILLING A BAG WITH A FLUID MATERIAL AND BAG SUITABLE FOR THIS PURPOSE
FR9610909 1996-09-06
PCT/FR1997/001570 WO1998010210A1 (en) 1996-09-06 1997-09-05 Device and method for filling a bag with a fluid material and bag suited for this purpose

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EP0923692A1 true EP0923692A1 (en) 1999-06-23

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AU (1) AU4211497A (en)
CA (1) CA2264891A1 (en)
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GB2486014B (en) * 2010-12-02 2014-04-09 Underwater Cutting Solutions Ltd A method and apparatus for removing a subsea concrete protection mattress from the sea floor

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US3793845A (en) * 1972-07-20 1974-02-26 Marcona Corp Apparatus and method for anchoring submerged conduit
DE3144092A1 (en) * 1981-11-06 1983-05-26 Bernhard Prof. Dr.-Ing. 4630 Bochum Maidl Method for the protection or scour protection of natural soils, artificial fillings and systems as well as underwater structures on the basis of Colcrete mats or filled fabric mats
DE3268628D1 (en) * 1982-04-08 1986-03-06 Losinger Ag Method and apparatus for placing a cover on an underwater structure or on an underwater land strip

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NO991020D0 (en) 1999-03-02
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AU4211497A (en) 1998-03-26
NO991020L (en) 1999-04-30
WO1998010210A1 (en) 1998-03-12
FR2753255B1 (en) 1998-10-09

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