EP0513461A1 - Method and apparatus for creating thin walls in the ground - Google Patents

Method and apparatus for creating thin walls in the ground Download PDF

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Publication number
EP0513461A1
EP0513461A1 EP91402175A EP91402175A EP0513461A1 EP 0513461 A1 EP0513461 A1 EP 0513461A1 EP 91402175 A EP91402175 A EP 91402175A EP 91402175 A EP91402175 A EP 91402175A EP 0513461 A1 EP0513461 A1 EP 0513461A1
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Prior art keywords
high pressure
wall
grout
liquid
jet
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EP91402175A
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German (de)
French (fr)
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EP0513461B1 (en
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Dieter Volk
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Compagnie du Sol SARL
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Compagnie du Sol SARL
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/24—Placing by using fluid jets
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ

Definitions

  • the present invention relates to a new method for producing thin walls in the ground and to a device for implementing this method.
  • Such walls can be less than ten centimeters thick and more than 10 meters high.
  • a beam or sheet pile having a generally H-shaped section which is driven into the ground using a vibrator along the path of the wall which it is desired to make.
  • a grout based on cement or another hardening product is injected into the lower part of the beam to make the thin wall in place of the beam and in the vicinity of the latter. The injection can also be carried out during the ascent of the beam.
  • the grout is injected at a low pressure, for example a few tens of kilos per cm2, which is sufficient to maintain the ground and constitute the thin wall.
  • This method has the disadvantage of being relatively long to implement because it is necessary to beat or vibrate the beam in many successive positions which overlap, so that each threshing produces a width wall that is less than the width of the beam.
  • the vibrations to which the beam is subjected can in certain cases disintegrate fine soils in the vicinity of the beam by creating pockets of debris in the wall which has just been produced and which therefore has a defective seal.
  • Another method for producing thin walls which consists in driving from place to place along the path which the thin wall must occupy, a train of rods which is provided at its lower part with nozzles by which a grout of cement at very high pressure, for example at pressures between 200 and 600 kilos per cm2, so as to cut in the ground by the technique called "jetting", a wall section which will be filled with a cement grout which, after hardening, will form the thin wall.
  • the jets of cement grout under high pressure are directed substantially in the plane of the wall to be produced, it being understood however that the jets sent from two neighboring boreholes must form a slight angle between them so as to overlap preferably substantially equidistant from the two piles.
  • This known method has the disadvantage that if a slight angular error occurs in the positioning of the piles, the continuity is lost, that is to say the tightness of the wall. In addition, it does not allow in practice to produce thin walls.
  • the subject of the present invention is a method which avoids the drawbacks of the methods mentioned above, and which makes it possible to produce thin walls in an efficient and economical manner.
  • the subject of the present invention is a new method for producing continuous thin walls in the ground of the type in which a vertical beam or sheet pile is pressed, successively into the ground, along the path of the wall to be produced. at its lower part a device for injecting into the soil a grout which, after solidification; constitutes the thin wall, a process characterized by the fact that at least one jet of liquid at very high pressure directed in the plane of the wall to be produced is sent to the lower part of the beam.
  • liquid sent at very high pressure is meant according to the invention, a liquid which is sprayed with a pressure for example of a few hundred kilos per cm2.
  • the liquid which, according to the invention, is injected at very high pressure into the lower part of the beam can advantageously consist of a cement grout or another product which contains sufficient aggregate to harden it, allowing the realization of the wall .
  • This injection of liquid at very high pressure can be accompanied by an injection of gas and / or another liquid at a relatively low pressure, for example a few tens of kilos per cm2.
  • the spraying of the liquid at very high pressure takes place below the beam, from a nozzle which is located at the rear of the beam, (that is to say in the vicinity of the part of the wall which has already been produced) and in the direction of the part of the wall to be produced.
  • a jet of grout is sent to the already formed wall under very high pressure, possibly accompanied by an air jet of a nature to form the wall by hardening. This causes kneading of the grout which constitutes the upstream wall already formed and one thus destroys the pockets of ground debris which it could contain.
  • this very high pressure jet avoids that under the action of the vibro-sanding of the beam, the ground which is below it does not flow back into the part of the thin wall which has already been performed, this due to the fact that the very high pressure jet tends to reject the ground downstream, in the direction of the thin wall which remains to be produced.
  • the action of the jet at very high pressure is exerted at a significant distance downstream of the beam, which makes it possible to increase the distance between the successive threshing positions of the beam.
  • the excavation of the thin wall can even be carried out between two threshing positions only by the jet at very high pressure, so that the distance which separates two successive hacks of the beam can be appreciably greater than the width of the beam, then that in the known technique, it is less than or equal to this width.
  • the present invention also relates to an apparatus for producing continuous thin walls in the ground of the type comprising a vertical beam or sheet pile preferably of H-section, which is provided at its lower part with a device for injecting grout, this device being characterized in that it comprises at its lower part at least one device for sending a liquid at very high pressure in the plane of the thin wall being produced.
  • this device is advantageously located below and behind the lower end of the beam, so that the jet of liquid under very high pressure is sent below the beam, towards the wall to be made.
  • the apparatus according to the invention further comprises a device for sending grout at very high pressure, which is placed at the lower part of the beam upstream, on the side of the part of the wall that is already made.
  • the device directs the grout jet under very high pressure only upstream, that is to say in the direction of the thin wall already produced.
  • the apparatus according to the invention may also include a device for sending a gas and / or a liquid under relatively low pressure, in parallel and in the vicinity of the jet of liquid at very high pressure.
  • FIG. 1 There is schematically shown in Figure 1 a vertical beam or sheet pile 1 used to achieve according to a traditional method a thin wall of grout of cement or other curable materials.
  • the beam 1 is driven into the ground using a vibro-sander 3 suspended from the end of the mast 4 of a lifting machine 5 and guided by a vertical mast 3 a .
  • an injection device 6 shown diagrammatically which sends grout under a relatively low pressure to the base of the beam which is being threshing.
  • the grout thus injected serves to facilitate the descent of the beam and, during the ascent, to fill the void left by the depression of the beam 1.
  • the beam can only be moved to the right for a new threshing by a distance less than its width so as to obtain an overlap of the footprints left by the beam in the ground.
  • the beam 1 has an H-shaped section having a core 7 joining two wings 8 and 9. A its lower part the beam 1 is reinforced by extra thicknesses 7 a , 8 a and 9 b making it possible to make an imprint in the ground with dimensions greater than those of the current section of the beam.
  • the lower end of the beam 1 also has on its left part a fin 10 located in the extension of the core 7. This fin is intended to engage in the part of the wall which has been produced. during the previous threshing of the beam.
  • a nozzle 11 has been placed at the lower part of the beam, making it possible to send a jet of grout 12 at very high pressure substantially horizontal in the plane of the thin wall, that is to say in the plane of the core 7 of the beam 1.
  • composition of this grout based on water, cement and aggregates is such that it can, after solidification, constitute the thin wall.
  • This grout projected under very high pressure at 12 causes a cutting of the ground below the beam 1 and on the right beyond this beam in the plane of the wall which must be produced.
  • the very high pressure grout is supplied by a tube 14 placed along the wing 9.
  • the implementation, in accordance with the invention, of sending the grout under very high pressure to the lower part of the beam 1 has the multiple advantage of pushing back the ground which is falling apart under the beam 1 by preventing it from engage to the left in the part of the wall that has already been made, to facilitate the insertion of the beam 1, which makes it easier to work and save energy, and to produce a flat cavity downstream of the beam 1, that is to say on the right as seen in FIG. 2, cavity which is used for the subsequent molding of the planar wall.
  • the imprints overlap.
  • the second embodiment of the invention which is shown in Figures 4 and 5 differs from the embodiment of Figures 2 and 3 in that the nozzle for sending liquid, for example water, to very high pressure is located on the right part 8 a of the lower end of the beam 1, so that the nozzle 11 a projects a jet 12 a at very high pressure only upstream of the beam 1, that is to say - say in the part of the ground which has not yet been worked by the driving in of beam 1.
  • liquid for example water
  • the nozzle 6 supplied by the pipe 15 supplies the base 1 of the beam 1 with the grout which, after solidification, will ensure the formation of the thin wall.
  • a nozzle 17 for sending grout at very high pressure which projects a jet 18 into the part of the thin wall which has already been produced during previous threshing, which has the advantage of eliminating any pocket of land which could remain in this part of the thin wall.
  • a very high pressure water jet 12 is also sent via the nozzle 11 and the pipe 14 which is directed downstream to the part of the wall which remains to be produced.
  • a compressed air jet 12 b which comes via line 14 b and which opens in the immediate vicinity of the water jet 12, which facilitates the penetration of the latter in the soil.
  • the nozzle 6 brings the grout under relatively low pressure to occupy the cavity formed in the ground by the high pressure water jet 12 and form the wall after hardening.
  • the fourth embodiment according to FIGS. 8 and 9 comprises a nozzle 11 for projecting water at very high pressure downstream, towards the part of the wall which is not yet produced, as well as a nozzle projection of grout at very high pressure 17 upstream, in the opposite direction.
  • the jet 12 of water at very high pressure cuts the ground where the wall is to be produced, while the jet 18 of grout 18 at very high pressure, mixes the grout in the wall which has just been carried out to eliminate pockets of ground which could remain in the grout.
  • the nozzle 11 a sends a grout jet 12 a , preferably at high pressure, to fill the cavity produced by the very high pressure water jet 12 with grout, and the nozzle 11 c sends in the vicinity of the grout jet 12 a , a jet of compressed air 12 c which arrives via the line 14 c .
  • the invention makes it possible, by simple means, to considerably improve the productivity of an apparatus for producing thin walls in the ground while increasing the quality of these walls.
  • the configuration of the lower part of the beam 1 or sheet pile can be modified according to the opportunities, insofar as the retention at the lower part of the vertical beam is kept the supply of a jet of liquid sent at very high pressure in the plane of the wall to cut a cavity and / or avoid that pockets of ground remain in the volume which the thin wall must occupy.
  • the liquid sent at very high pressure can for example be water and / or grout, and that a gas such as air, can be injected in the vicinity of or injection points for very high pressure liquids.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Coating With Molten Metal (AREA)
  • Load-Bearing And Curtain Walls (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Processing Of Solid Wastes (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

The invention relates to a method and apparatus for creating continuous thin walls in the ground, of the type in which a vertical beam or sheet pile, which comprises at its lower part a device for injecting a grout into the ground, which grout, after solidifying, forms the thin wall, is driven successively into the ground, along the route of the wall being built, using vibratory means. Method characterised in that at least one jet (12) of liquid at very high pressure, directed substantially in the plane of the wall to be built, is sent to the lower part of the beam (1). <IMAGE>

Description

La présente invention est relative à un nouveau procédé pour la réalisation de parois minces dans le sol et à un dispositif pour la mise en oeuvre de ce procédé.The present invention relates to a new method for producing thin walls in the ground and to a device for implementing this method.

On sait que l'on est amené à réaliser dans le sol des parois minces en coulis pour constituer notamment des barrières continues étanches à l'eau.We know that we have to make thin grout walls in the ground to constitute in particular continuous watertight barriers.

De telles parois peuvent avoir moins d'une dizaine de centimètres d'épaisseur et une hauteur de plus de 10 mètres.Such walls can be less than ten centimeters thick and more than 10 meters high.

Pour les réaliser, il est déjà connu d'utiliser une poutre ou palplanche ayant une section généralement en forme de H qui est enfoncée dans le sol à l'aide d'un vibreur le long du trajet de la paroi que l'on désire réaliser. En même temps on injecte à la partie inférieure de la poutre un coulis à base de ciment ou d'un autre produit durcissant pour réaliser la paroi mince à la place de la poutre et au voisinage de celle-ci. L'injection peut également être effectuée lors de la remontée de la poutre.To make them, it is already known to use a beam or sheet pile having a generally H-shaped section which is driven into the ground using a vibrator along the path of the wall which it is desired to make. . At the same time, a grout based on cement or another hardening product is injected into the lower part of the beam to make the thin wall in place of the beam and in the vicinity of the latter. The injection can also be carried out during the ascent of the beam.

Selon ce procédé connu, le coulis est injecté à une pression peu élevée, par exemple de quelques dizaines de kilos par cm², qui est suffisante pour maintenir le terrain et constituer la paroi mince.According to this known process, the grout is injected at a low pressure, for example a few tens of kilos per cm², which is sufficient to maintain the ground and constitute the thin wall.

Ce procédé présente l'inconvénient d'être relativement long à mettre en oeuvre du fait qu'il est nécessaire de battre ou de vibrer la poutre en de nombreuses positions successives qui se recoupent, de telle sorte qu'à chaque battage on réalise une largeur de paroi qui est inférieure à la largeur de la poutre. De surcroît, les vibrations auxquelles la poutre est soumise peuvent dans certains cas désagréger les terrains fins au voisinage de la poutre en créant des poches de débris dans la paroi qui vient d'être réalisée et qui de ce fait présente une étanchéité défectueuse.This method has the disadvantage of being relatively long to implement because it is necessary to beat or vibrate the beam in many successive positions which overlap, so that each threshing produces a width wall that is less than the width of the beam. In addition, the vibrations to which the beam is subjected can in certain cases disintegrate fine soils in the vicinity of the beam by creating pockets of debris in the wall which has just been produced and which therefore has a defective seal.

On connaît également un autre procédé pour réaliser des parois minces qui consiste à enfoncer de place en place le long du trajet que doit occuper la paroi mince, un train de tiges qui est muni à sa partie inférieure de buses par lesquelles on projette un coulis de ciment à très haute pression, par exemple à des pressions comprises entre 200 et 600 kilos par cm², de manière à découper dans le terrain par la technique dite de "jetting", une section de paroi qui sera remplie par un coulis de ciment qui, après durcissement, formera la paroi mince.Another method is also known for producing thin walls which consists in driving from place to place along the path which the thin wall must occupy, a train of rods which is provided at its lower part with nozzles by which a grout of cement at very high pressure, for example at pressures between 200 and 600 kilos per cm², so as to cut in the ground by the technique called "jetting", a wall section which will be filled with a cement grout which, after hardening, will form the thin wall.

Dans cette technique les jets de coulis de ciment sous haute pression sont dirigés sensiblement dans le plan de la paroi à réaliser, étant entendu toutefois que les jets envoyés à partir de deux forages voisins doivent faire entre-eux un léger angle de manière à se recouper de préférence sensiblement à égale distance des deux pieux.In this technique the jets of cement grout under high pressure are directed substantially in the plane of the wall to be produced, it being understood however that the jets sent from two neighboring boreholes must form a slight angle between them so as to overlap preferably substantially equidistant from the two piles.

Ce procédé connu présente l'inconvénient que si une légère erreur angulaire se produit dans le positionnement des pieux on perd la continuité, c'est-à-dire l'étanchéité de la paroi. De plus, il ne permet pas dans la pratique de réaliser des parois minces.This known method has the disadvantage that if a slight angular error occurs in the positioning of the piles, the continuity is lost, that is to say the tightness of the wall. In addition, it does not allow in practice to produce thin walls.

La présente invention a pour objet un procédé qui évite les inconvénients des procédés rappelés ci-dessus, et qui permet de réaliser des parois minces d'une manière efficace et économique.The subject of the present invention is a method which avoids the drawbacks of the methods mentioned above, and which makes it possible to produce thin walls in an efficient and economical manner.

La présente invention a pour objet un nouveau procédé pour réaliser des parois minces continues dans le sol du type dans lequel l'on enfonce par vibrations successivement dans le sol, le long du parcours de la paroi à réaliser, une poutre verticale ou palplanche qui comporte à sa partie inférieure un dispositif pour injecter dans le sol un coulis qui, après solidification; constitue la paroi mince, procédé caractérisé par le fait que l'on envoie à la partie inférieure de la poutre au moins un jet de liquide à très haute pression dirigé dans le plan de la paroi à réaliser.The subject of the present invention is a new method for producing continuous thin walls in the ground of the type in which a vertical beam or sheet pile is pressed, successively into the ground, along the path of the wall to be produced. at its lower part a device for injecting into the soil a grout which, after solidification; constitutes the thin wall, a process characterized by the fact that at least one jet of liquid at very high pressure directed in the plane of the wall to be produced is sent to the lower part of the beam.

Par liquide envoyé à très haute pression, on entend selon l'invention, un liquide qui est projeté avec une pression par exemple de quelques centaines de kilos par cm².By liquid sent at very high pressure is meant according to the invention, a liquid which is sprayed with a pressure for example of a few hundred kilos per cm².

Le liquide qui, selon l'invention, est injecté à très haute pression à la partie inférieure de la poutre peut être avantageusement constitué par un coulis de ciment ou un autre produit qui contient suffisamment de granulat pour en durcissant, permettre la réalisation de la paroi. Cette injection de liquide à très haute pression peut être accompagnée d'une injection de gaz et/ou d'un autre liquide à une pression relativement faible, par exemple de quelques dizaines de kilos par cm².The liquid which, according to the invention, is injected at very high pressure into the lower part of the beam can advantageously consist of a cement grout or another product which contains sufficient aggregate to harden it, allowing the realization of the wall . This injection of liquid at very high pressure can be accompanied by an injection of gas and / or another liquid at a relatively low pressure, for example a few tens of kilos per cm².

Selon un mode de mise en oeuvre préféré du procédé selon l'invention, la projection du liquide à très haute pression s'effectue en-dessous de la poutre, à partir d'une buse qui est située à l'arrière de la poutre, (c'est-à-dire au voisinage de la partie de la paroi qui a déjà été réalisée) et en direction de la partie de la paroi à réaliser. On évite ainsi que le terrain désagrégé par les vibrations du battage vienne constituer des poches dans la paroi mince déjà réalisée et que cette dernière perde ainsi sa continuité.According to a preferred embodiment of the method according to the invention, the spraying of the liquid at very high pressure takes place below the beam, from a nozzle which is located at the rear of the beam, (that is to say in the vicinity of the part of the wall which has already been produced) and in the direction of the part of the wall to be produced. We avoid as well as the terrain disintegrated by the vibrations of the threshing comes to form pockets in the thin wall already produced and that the latter thus loses its continuity.

Dans un autre mode de réalisation de l'invention, on envoie vers la paroi déjà formée un jet de coulis sous très haute pression, éventuellement accompagné d'un jet d'air de nature à constituer la paroi par durcissement On provoque ainsi un malaxage du coulis qui constitue la paroi amont déjà formée et l'on détruit ainsi les poches de débris de terrain qu'elle pourrait contenir.In another embodiment of the invention, a jet of grout is sent to the already formed wall under very high pressure, possibly accompanied by an air jet of a nature to form the wall by hardening. This causes kneading of the grout which constitutes the upstream wall already formed and one thus destroys the pockets of ground debris which it could contain.

Selon une variante, on peut également envoyer vers l'aval, en direction opposée, un jet d'eau sous très haute pression, éventuellement accompagné d'un jet de coulis et/ou d'un jet d'air sous des pressions relativement faibles.Alternatively, it is also possible to send downstream, in the opposite direction, a water jet under very high pressure, possibly accompanied by a grout jet and / or an air jet under relatively low pressures. .

Dans une autre variante, on peut envoyer en direction de la paroi à réaliser un jet de coulis sous très forte pression, de composition telle que ce coulis peut après durcissement constituer la paroi mince, accompagné d'un jet d'air et éventuellement d'un jet d'eau sous des pressions relativement faibles.In another variant, it is possible to send in the direction of the wall to produce a jet of grout under very high pressure, of a composition such that this grout can, after hardening, constitute the thin wall, accompanied by an air jet and optionally a jet of water under relatively low pressures.

L'utilisation du jet de liquide à très haute pression en direction de la paroi à réaliser, présente des avantages importants par rapport à la technique déjà connue de battage de la poutre par vibro-ponçage.The use of the jet of liquid at very high pressure in the direction of the wall to be produced has significant advantages over the already known technique of threshing the beam by vibro-sanding.

Tout d'abord, ce jet à très haute pression évite que sous l'action du vibro-ponçage de la poutre, le terrain qui se trouve en-dessous de celle-ci ne reflue dans la partie de la paroi mince qui a déjà été réalisée, ceci en raison du fait que le jet à très haute pression a tendance à rejeter le terrain vers l'aval, dans la direction de la paroi mince qui reste à réaliser.First of all, this very high pressure jet avoids that under the action of the vibro-sanding of the beam, the ground which is below it does not flow back into the part of the thin wall which has already been performed, this due to the fact that the very high pressure jet tends to reject the ground downstream, in the direction of the thin wall which remains to be produced.

De plus, l'action du jet à très haute pression s'exerce à une distance non négligeable en aval de la poutre, ce qui permet d'augmenter la distance entre les positions successives de battage de la poutre. L'excavation de la paroi mince peut même être réalisée entre deux positions de battage uniquement par le jet à très haute pression, de sorte que la distance qui sépare deux hattages successifs de la poutre peut être sensiblement supérieure à la largeur de la poutre, alors que dans la technique connue, elle est inférieure ou égale à cette largeur.In addition, the action of the jet at very high pressure is exerted at a significant distance downstream of the beam, which makes it possible to increase the distance between the successive threshing positions of the beam. The excavation of the thin wall can even be carried out between two threshing positions only by the jet at very high pressure, so that the distance which separates two successive hacks of the beam can be appreciably greater than the width of the beam, then that in the known technique, it is less than or equal to this width.

Enfin, l'utilisation conformément à l'invention du jet de liquide à très haute pression qui désagrège le terrain à la partie inférieure de la poutre facilite largement le vibro-poncage de cette dernière qui est plus rapide et qui consomme sensiblement moins d'énergie.Finally, the use according to the invention of the very high pressure liquid jet which disintegrates the ground at the bottom of the beam greatly facilitates the vibro-sanding of the latter which is faster and consumes significantly less energy.

Conformément à l'invention, il est possible d'utiliser simultanément plusieurs jets à très haute pression qui sont envoyés dans le plan de la paroi qui reste à réaliser.According to the invention, it is possible to simultaneously use several jets at very high pressure which are sent in the plane of the wall which remains to be produced.

C'est ainsi qu'il peut être avantageux d'utiliser en même temps qu'un jet de coulis à très haute pression dirigé vers l'amont, un second jet à très haute pression vers l'aval, c'est-à-dire en direction de la paroi qui doit être réalisée.Thus it can be advantageous to use at the same time as a jet of grout at very high pressure directed upstream, a second jet at very high pressure downstream, that is to say say towards the wall that needs to be done.

La présente invention a également pour objet un appareil pour la réalisation de parois minces continues dans le sol du type comportant une poutre ou palplanche verticale de préférence à section en H, qui est munie à sa partie inférieure d'un dispositif pour injecter du coulis, cet appareil étant caractérisé par le fait qu'il comporte à sa partie inférieure au moins un dispositif pour envoyer un liquide à très haute pression dans le plan de la paroi mince en cours de réalisation.The present invention also relates to an apparatus for producing continuous thin walls in the ground of the type comprising a vertical beam or sheet pile preferably of H-section, which is provided at its lower part with a device for injecting grout, this device being characterized in that it comprises at its lower part at least one device for sending a liquid at very high pressure in the plane of the thin wall being produced.

Selon un mode de réalisation de l'invention, ce dispositif est avantageusement situé en-dessous et en arrière de l'extrémité inférieure de la poutre, de manière à ce que le jet de liquide sous très haute pression soit envoyé en-dessous de la poutre, en direction de la paroi à réaliser.According to one embodiment of the invention, this device is advantageously located below and behind the lower end of the beam, so that the jet of liquid under very high pressure is sent below the beam, towards the wall to be made.

Dans une variante de ce mode de réalisation, l'appareil selon l'invention comporte en outre un dispositif d'envoi de coulis à très haute pression, qui est placé à la partie inférieure de la poutre vers l'amont, du côté de la partie de la paroi qui est déjà réalisée.In a variant of this embodiment, the apparatus according to the invention further comprises a device for sending grout at very high pressure, which is placed at the lower part of the beam upstream, on the side of the part of the wall that is already made.

Selon un autre mode de réalisation, le dispositif dirige le jet de coulis sous très haute pression uniquement vers l'amont, c'est-à-dire en direction de la paroi mince déjà réalisée.According to another embodiment, the device directs the grout jet under very high pressure only upstream, that is to say in the direction of the thin wall already produced.

L'appareil selon l'invention peut comporter également un dispositif pour envoyer un gaz et/ou un liquide sous pression relativement faible, parallèlement et au voisinage du jet de liquide à très haute pression.The apparatus according to the invention may also include a device for sending a gas and / or a liquid under relatively low pressure, in parallel and in the vicinity of the jet of liquid at very high pressure.

Dans le but de mieux faire comprendre l'invention on va en décrire maintenant à titre d'illustration et sans aucun caractère limitatif plusieurs modes de réalisation pris comme exemples et représentés sur le dessin annexé dans lequel :

  • la figure 1 représente une vue schématique de la mise en oeuvre d'un procédé conventionnel de réalisation de parois minces dans le sol,
  • la figure 2 est une vue à plus grande échelle de la partie inférieure d'un premier mode de réalisation de la poutre verticale selon l'invention,
  • la figure 3 est une vue en coupe selon III-III de la figure 2,
  • la figure 4 est une vue en coupe de la partie inférieure d'un deuxième mode de réalisation de la poutre verticale de l'invention,
  • la figure 5 est une vue en coupe selon V-V de la figure 4,
  • la figure 6 est une vue en coupe de la partie inférieure d'un troisième mode de réalisation de la poutre selon l'invention,
  • la figure 7 est une vue en coupe selon VII-VII de la figure 6,
  • la figure 8 est une vue de la partie inférieure d'un quatrième mode de réalisation de la poutre verticale de l'invention, et
  • la figure 9 est une vue en coupe selon IX-IX de la figure 1.
In order to better understand the invention, we will now describe, by way of illustration and without any limiting character, several embodiments taken as examples and represented in the appended drawing in which:
  • FIG. 1 represents a schematic view of the implementation of a conventional method for producing thin walls in the ground,
  • FIG. 2 is a view on a larger scale of the lower part of a first embodiment of the vertical beam according to the invention,
  • FIG. 3 is a sectional view along III-III of FIG. 2,
  • FIG. 4 is a sectional view of the lower part of a second embodiment of the vertical beam of the invention,
  • FIG. 5 is a sectional view along VV of FIG. 4,
  • FIG. 6 is a sectional view of the lower part of a third embodiment of the beam according to the invention,
  • FIG. 7 is a sectional view along VII-VII of FIG. 6,
  • FIG. 8 is a view of the lower part of a fourth embodiment of the vertical beam of the invention, and
  • Figure 9 is a sectional view along IX-IX of Figure 1.

On a schématiquement représenté sur la figure 1 une poutre verticale ou palplanche 1 utilisée pour réaliser selon un procédé traditionnel une paroi mince en coulis de ciment ou d'autres matériaux durcissables.There is schematically shown in Figure 1 a vertical beam or sheet pile 1 used to achieve according to a traditional method a thin wall of grout of cement or other curable materials.

Pour mettre en oeuvre ce procédé connu, la poutre 1 est enfoncée dans le sol à l'aide d'un vibro-ponceur 3 suspendu à l'extrémité du mât 4 d'un engin de levage 5 et guidé par un mât vertical 3a.To implement this known method, the beam 1 is driven into the ground using a vibro-sander 3 suspended from the end of the mast 4 of a lifting machine 5 and guided by a vertical mast 3 a .

A la partie inférieure de la poutre 1 se trouve un dispositif d'injection 6 schmétiquement représenté qui envoie du coulis sous une pression relativement faible à la base de la poutre qui est en cours de battage.At the lower part of the beam 1 is an injection device 6 shown diagrammatically which sends grout under a relatively low pressure to the base of the beam which is being threshing.

Le coulis ainsi injecté sert à faciliter la descente de la poutre et, lors de la remontée, à remplir le vide laissé par l'enfoncement de la poutre 1.The grout thus injected serves to facilitate the descent of the beam and, during the ascent, to fill the void left by the depression of the beam 1.

Pour réaliser la paroi, on procède à des ponçages successifs de la poutre 1 en la déplacant vers la droite au plus d'une distance correspondant à sa largeur. Dans la pratique, on ne peut déplacer la poutre vers la droite pour un nouveau battage que d'une distance inférieure à sa largeur de manière à obtenir un recouvrement des empreintes laissées par la poutre dans le sol.To make the wall, we proceed to successive sanding of the beam 1 by moving it to the right by more than a distance corresponding to its width. In practice, the beam can only be moved to the right for a new threshing by a distance less than its width so as to obtain an overlap of the footprints left by the beam in the ground.

On a représenté sur les figures 2 et 3 un premier mode de réalisation de la partie inférieure de la poutre selon l'invention.There is shown in Figures 2 and 3 a first embodiment of the lower part of the beam according to the invention.

Comme on peut le voir sur la figure 3, la poutre 1 présente une section en forme de H comportant une âme 7 réunissant deux ailes 8 et 9. A sa partie inférieure la poutre 1 est renforcée par des surépaisseurs 7a, 8a et 9b permettant de réaliser dans le terrain une empreinte aux dimensions supérieures à celles de la section courante de la poutre.As can be seen in Figure 3, the beam 1 has an H-shaped section having a core 7 joining two wings 8 and 9. A its lower part the beam 1 is reinforced by extra thicknesses 7 a , 8 a and 9 b making it possible to make an imprint in the ground with dimensions greater than those of the current section of the beam.

Dans le cas présent, l'extrémité inférieure de la poutre 1 comporte également sur sa partie gauche un aileron 10 situé dans le prolongement de l'âme 7. Cet aileron est destiné à s'engager dans la partie de la paroi qui a été réalisée lors du battage précédent de la poutre.In the present case, the lower end of the beam 1 also has on its left part a fin 10 located in the extension of the core 7. This fin is intended to engage in the part of the wall which has been produced. during the previous threshing of the beam.

Conformément à l'invention, on a disposé à la partie basse de la poutre, une buse 11 permettant d'envoyer un jet de coulis 12 à très haute pression sensiblement horizontal dans le plan de la paroi mince, c'est-à-dire dans le plan de l'âme 7 de la poutre 1.In accordance with the invention, a nozzle 11 has been placed at the lower part of the beam, making it possible to send a jet of grout 12 at very high pressure substantially horizontal in the plane of the thin wall, that is to say in the plane of the core 7 of the beam 1.

La composition de ce coulis à base d'eau, de ciment et de granulats (sable, gravier, poudre de calcaire etc) est telle qu'il peut, après solidification, constituer la paroi mince.The composition of this grout based on water, cement and aggregates (sand, gravel, limestone powder etc.) is such that it can, after solidification, constitute the thin wall.

Ce coulis projeté sous très forte pression en 12 provoque un découpage du terrain en-dessous de la poutre 1 et sur la droite au-delà de cette poutre dans le plan de la paroi qui doit être réalisée.This grout projected under very high pressure at 12 causes a cutting of the ground below the beam 1 and on the right beyond this beam in the plane of the wall which must be produced.

Le coulis à très haute pression est amené par une tubulure 14 disposée le long de l'aile 9.The very high pressure grout is supplied by a tube 14 placed along the wing 9.

La mise en oeuvre, conformément à l'invention, de l'envoi du coulis sous très haute pression à la partie inférieure de la poutre 1 présente l'avantage multiple de repousser le terrain qui se désagrège sous la poutre 1 en l'empêchant de s'engager vers la gauche dans la partie de la paroi qui a déjà été réalisée, de faciliter l'enfoncement de la poutre 1, ce qui permet de travailler plus facilement et d'économiser de l'énergie, et de réaliser une cavité plane en aval de la poutre 1, c'est-à-dire sur la droite comme vu sur la figure 2, cavité qui sert au moulage ultérieur de la paroi plane.The implementation, in accordance with the invention, of sending the grout under very high pressure to the lower part of the beam 1 has the multiple advantage of pushing back the ground which is falling apart under the beam 1 by preventing it from engage to the left in the part of the wall that has already been made, to facilitate the insertion of the beam 1, which makes it easier to work and save energy, and to produce a flat cavity downstream of the beam 1, that is to say on the right as seen in FIG. 2, cavity which is used for the subsequent molding of the planar wall.

C'est ainsi que, grâce à l'invention, il n'est pas nécessaire que, lors de deux ponçages successifs de la poutre 1, les empreintes se superposent. Au contraire, il est possible d'effectuer des battages successifs de la poutre 1 en les espacant d'une distance qui est supérieure à la largeur de la poutre 1, la cavité destinée à recevoir la paroi mince entre deux empreintes successives de la poutre 1 étant réalisée par le jet 12a à haute pression.Thus, thanks to the invention, it is not necessary that, during two successive sandings of the beam 1, the imprints overlap. On the contrary, it is possible to carry out successive threshing of the beam 1 by spacing them by a distance which is greater than the width of the beam 1, the cavity intended to receive the thin wall between two successive impressions of the beam 1 being produced by the jet 12 a at high pressure.

Dans une variante non représentée sur les figures 2 et 3, on peut envoyer un jet d'air au voisinage du jet de coulis à très haute pression, ce qui facilite la pénétration du coulis dans le terrain.In a variant not shown in Figures 2 and 3, one can send an air jet in the vicinity of the grout jet at very high pressure, which facilitates the penetration of the grout into the ground.

Le deuxième mode de réalisation de l'invention qui est représenté sur les figures 4 et 5 se distingue du mode de réalisation des figures 2 et 3 par le fait que la buse d'envoi de liquide , par exemple de l'eau, à très haute pression est située sur la partie droite 8a de l'extrémité inférieure de la poutre 1, de telle sorte que la buse 11a projette un jet 12a à très haute pression uniquement en amont de la poutre 1, c'est-à-dire dans la partie du terrain qui n'a pas encore été travaillée par l'enfoncement de la poutre 1.The second embodiment of the invention which is shown in Figures 4 and 5 differs from the embodiment of Figures 2 and 3 in that the nozzle for sending liquid, for example water, to very high pressure is located on the right part 8 a of the lower end of the beam 1, so that the nozzle 11 a projects a jet 12 a at very high pressure only upstream of the beam 1, that is to say - say in the part of the ground which has not yet been worked by the driving in of beam 1.

La buse 6 alimentée par la canalisation 15 assure l'amenée à la base de la poutre 1 du coulis qui, après solidification, assurera la formation de la paroi mince.The nozzle 6 supplied by the pipe 15 supplies the base 1 of the beam 1 with the grout which, after solidification, will ensure the formation of the thin wall.

On conçoit dans ces conditions que, tandis que l'on procède au vibro-battage de la poutre 1 en injectant du coulis en-dessous de la poutre, comme cela est connu de manière traditionnelle, on procède également par projection de liquide à très haute pression selon le jet 12a à un découpage vertical du terrain qui se trouve en amont de la poutre 1. On peut ainsi réaliser la paroi mince dans cette fente, soit avec le liquide projeté par la buse 11a lorsque ce liquide est du coulis durcissable, soit, en remplissant cette fente avec le coulis envoyé en 6 avec un volume et une pression suffisante pour occuper l'espace réalisé par le jet d'eau 12a sous très haute pression. On peut encore remplir cet espace lors du battage ultérieur de la poutre 1 qui, comme cela est expliqué précédemment, peut être réalisé à une certaine distance de l'empreinte précédente de cette même poutre.It is conceivable under these conditions that, while one proceeds to the vibro-threshing of the beam 1 by injecting grout below the beam, as is conventionally known, one also proceeds by spraying liquid at very high pressure according to the jet 12 a to a vertical cutting of the ground which is upstream of the beam 1. It is thus possible to produce the thin wall in this slot, either with the liquid projected by the nozzle 11a when this liquid is curable grout, or by filling this slot with the grout sent at 6 with a volume and a pressure sufficient to occupy the space produced by the water jet 12 a under very high pressure. This space can still be filled during the subsequent beating of the beam 1 which, as explained above, can be carried out at a certain distance from the previous footprint of this same beam.

Dans le mode de réalisation représenté sur les figures 6 et 7, on a disposé sur le côté gauche de la partie inférieure de la poutre, une buse 17 d'envoi de coulis à très haute pression qui projette un jet 18 dans la partie de la paroi mince qui a déjà été réalisée lors de battage précédent, ce qui a l'avantage de supprimer toute poche de terrain qui pourrait subsister dans cette partie de la paroi mince.In the embodiment shown in FIGS. 6 and 7, there is arranged on the left side of the lower part of the beam, a nozzle 17 for sending grout at very high pressure which projects a jet 18 into the part of the thin wall which has already been produced during previous threshing, which has the advantage of eliminating any pocket of land which could remain in this part of the thin wall.

Le coulis ainsi injecté arrive par la canalisation 19.The grout thus injected arrives via line 19.

Dans ce mode de réalisation, on envoie également par la buse 11 et la canalisation 14 un jet d'eau 12 à très haute pression qui est dirigé en aval vers la partie de la paroi qui reste à réaliser. On envoie également par la buse 11b, un jet d'air comprimé 12b qui arrive par la canalisation 14b et qui débouche au voisinage immédiat du jet d'eau 12, ce qui facilite la pénétration de ce dernier dans le terrain.In this embodiment, a very high pressure water jet 12 is also sent via the nozzle 11 and the pipe 14 which is directed downstream to the part of the wall which remains to be produced. We also send through the nozzle 11b, a compressed air jet 12 b which comes via line 14 b and which opens in the immediate vicinity of the water jet 12, which facilitates the penetration of the latter in the soil.

Enfin, comme dans le mode de réalisation des figures 4 et 5, la buse 6 amène du coulis sous pression relativement faible pour occuper la cavité formée dans le sol par le jet d'eau à haute pression 12 et constituer la paroi après durcissement.Finally, as in the embodiment of Figures 4 and 5, the nozzle 6 brings the grout under relatively low pressure to occupy the cavity formed in the ground by the high pressure water jet 12 and form the wall after hardening.

Le quatrième mode de réalisation selon les figures 8 et 9 comporte une buse de projection 11 d'eau à très haute pression vers l'aval, en direction de la partie de la paroi qui n'est pas encore réalisée, ainsi qu'une buse de projection de coulis à très haute pression 17 vers l'amont, dans la direction opposée.The fourth embodiment according to FIGS. 8 and 9 comprises a nozzle 11 for projecting water at very high pressure downstream, towards the part of the wall which is not yet produced, as well as a nozzle projection of grout at very high pressure 17 upstream, in the opposite direction.

Comme précédemment exposé, le jet 12 d'eau à très haute pression découpe le terrain où l'on doit réaliser la paroi, tandis que le jet 18 de coulis 18 à très haute pression, brasse le coulis dans la paroi qui vient d'être réalisée pour éliminer les poches de terrain qui pourraient subsister dans le coulis.As previously explained, the jet 12 of water at very high pressure cuts the ground where the wall is to be produced, while the jet 18 of grout 18 at very high pressure, mixes the grout in the wall which has just been carried out to eliminate pockets of ground which could remain in the grout.

La buse 11a envoie un jet de coulis 12a, de préférence à haute pression, pour garnir de coulis la cavité réalisée par le jet d'eau à très haute pression 12, et la buse 11c envoie au voisinage du jet de coulis 12a, un jet d'air comprimé 12c qui arrive par la canalisation 14c.The nozzle 11 a sends a grout jet 12 a , preferably at high pressure, to fill the cavity produced by the very high pressure water jet 12 with grout, and the nozzle 11 c sends in the vicinity of the grout jet 12 a , a jet of compressed air 12 c which arrives via the line 14 c .

Le mélange de l'air au jet de coulis 12a permet une meilleure répartition du coulis et une meilleure pénétration du jet 12a.Mixing the air with the grout jet 12 a allows better distribution of the grout and better penetration of the jet 12 a .

Comme on le voit, l'invention permet par des moyens simples d'améliorer considérablement la productivité d'un appareil pour la réalisation de parois minces dans le sol tout en augmentant la qualité de ces parois.As can be seen, the invention makes it possible, by simple means, to considerably improve the productivity of an apparatus for producing thin walls in the ground while increasing the quality of these walls.

Il est bien entendu que les modes de réalisation qui ont été décrits ci-dessus ne présentent aucun caractère limitatif et qu'ils pourront recevoir toutes modifications désirables sans sortir pour cela du cadre de l'invention.It is understood that the embodiments which have been described above are in no way limiting and that they can receive any desirable modification without departing from the scope of the invention.

En particulier, il est clair que la configuration de la partie inférieure de la poutre 1 ou palplanche peut être modifiée en fonction des opportunités, dans la mesure où l'on conserve le maintien à la partie inférieure de la poutre verticale l'amenée d'un jet de liquide envoyé à très haute pression dans le plan de la paroi pour découper une cavité et/ou éviter que des poches de terrain ne subsistent dans le volume que doit occuper la paroi mince.In particular, it is clear that the configuration of the lower part of the beam 1 or sheet pile can be modified according to the opportunities, insofar as the retention at the lower part of the vertical beam is kept the supply of a jet of liquid sent at very high pressure in the plane of the wall to cut a cavity and / or avoid that pockets of ground remain in the volume which the thin wall must occupy.

Enfin, on comprend que selon l'invention, le liquide envoyé à très haute pression peut être par exemple de l'eau et/ou du coulis, et qu'un gaz tel que de l'air, peut être injecté au voisinage du ou des points d'injection des liquides à très haute pression.Finally, it is understood that according to the invention, the liquid sent at very high pressure can for example be water and / or grout, and that a gas such as air, can be injected in the vicinity of or injection points for very high pressure liquids.

Claims (15)

Procédé pour réaliser des parois minces continues dans le sol du type dans lequel on enfonce par vibrations, successivement dans le sol, le long du parcours de la paroi réalisée, une poutre verticale ou palplanche qui comporte à sa partie inférieure un dispositif pour injecter dans le sol un coulis qui, après solidification, constitue la paroi mince, procédé caractérisé par le fait que l'on envoie à la partie inférieure de la poutre (1) au moins un jet (12,12a,18) de liquide à très haute pression dirigé sensiblement dans le plan de la paroi à réaliser.Process for producing continuous thin walls in the ground of the type in which a vertical beam or sheet pile is pressed successively into the ground, along the path of the wall produced, which has at its lower part a device for injecting into the ground a grout which, after solidification, constitutes the thin wall, process characterized in that one sends to the lower part of the beam (1) at least one jet (12,12 a , 18) of very high liquid pressure directed substantially in the plane of the wall to be produced. Procédé selon la revendication 1, caractérisé par le fait que le coulis est injecté avec une pression relativement faible de quelques dizaines de kilos par cm².Method according to claim 1, characterized in that the grout is injected with a relatively low pressure of a few tens of kilos per cm². Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que le liquide est projeté à une très haute pression d'environ quelques centaines de kilos par cm².Method according to any one of the preceding claims, characterized in that the liquid is sprayed at a very high pressure of around a few hundred kilos per cm². Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que le liquide à très haute pression est constitué par un coulis contenant du ciment ou un autre produit durcissant, ainsi que des agrégats, ledit coulis constituant la paroi mince après solidification.Process according to any one of the preceding claims, characterized in that the very high pressure liquid consists of a grout containing cement or another hardening product, as well as aggregates, said grout constituting the thin wall after solidification. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que le liquide à très haute pression est de l'eau.Process according to any one of Claims 1 to 3, characterized in that the very high pressure liquid is water. Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que l'on injecte un gaz sous pression, tel que de l'air, au voisinage du point d'injection du liquide à très haute pression.Method according to any one of the preceding claims, characterized in that a gas under pressure, such as air, is injected in the vicinity of the point of injection of the liquid at very high pressure. Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que le jet de liquide à très haute pression est dirigé vers l'aval, en direction de la partie de la paroi qui reste à réaliser.Method according to any one of the preceding claims, characterized in that the jet of liquid at very high pressure is directed downstream, in the direction of the part of the wall which remains to be produced. Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que le jet (12) de liquide à très haute pression est situé en-dessous de la poutre (1).Method according to any one of the preceding claims, characterized in that the jet (12) of very high pressure liquid is located below the beam (1). Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que l'on projette un jet de coulis à très haute pression à la partie inférieure de la poutre vers l'amont, en direction de la paroi qui a déjà été réalisée.Method according to any one of the preceding claims, characterized in that a jet of grout at very high pressure is projected at the lower part of the beam upstream, in the direction of the wall which has already been produced. Procédé selon l'une quelconque des revendications précédentes, caractérisé par le fait que le jet à très haute pression est projeté sensiblement horizontalement.Method according to any one of the preceding claims, characterized in that the very high pressure jet is projected substantially horizontally. Appareil pour réaliser des parois minces dans le sol par le procédé selon l'une quelconque des revendications 1 à 10, du type comportant une poutre verticale de préférence à section en H actionnée par un vibro-batteur, qui est munie à sa partie inférieure d'un dispositif pour injecter du coulis, cet appareil étant caractérisé par le fait qu'il comporte, à sa partie inférieure, au moins un dispositif (11,11a) pour projeter un liquide à très haute pression dans le plan de la paroi mince en cours de réalisation.Apparatus for producing thin walls in the ground by the method according to any one of claims 1 to 10, of the type comprising a vertical beam preferably of H-section actuated by a vibratory mixer, which is provided at its lower part with '' a device for injecting grout, this device being characterized in that it comprises, at its lower part, at least one device (11,11 a ) for projecting a liquid at very high pressure in the plane of the thin wall in progress. Appareil selon la revendication 11, caractérisé par le fait que le dispositif (11) pour projeter un liquide à très haute pression dans le plan de la paroi est disposé en-dessous et en arrière de l'extrémité inférieure de la poutre (1), de manière à ce que le jet de fluide à très haute pression (12) soit envoyé vers l'aval, en-dessous de la poutre.Apparatus according to claim 11, characterized in that the device (11) for projecting a liquid at very high pressure into the plane of the wall is arranged below and behind the lower end of the beam (1), so that the very high pressure fluid jet (12) is sent downstream, below the beam. Appareil selon l'une quelconque des revendications 11 et 12, caractérisé par le fait qu'il comporte un dispositif de projection (11a) de liquide à très haute pression disposé à la partie inférieure de la poutre (1) du côté de la partie de la paroi qui n'est pas encore réalise.Apparatus according to any one of claims 11 and 12, characterized in that it comprises a device for spraying (11 a ) of very high pressure liquid disposed at the lower part of the beam (1) on the side of the part of the wall which is not yet realized. Appareil selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'il comporte un dispositif de projection (7) de coulis à très haute pression qui est dirigé vers la partie de la paroi déjà réalisée.Apparatus according to any one of the preceding claims, characterized in that it comprises a device for projecting (7) grout at very high pressure which is directed towards the part of the wall already made. Appareil selon l'une quelconque des revendications 11 à 14, caractérisé par le fait qu'il comporte un dispositif pour injecter de l'air au voisinage du jet de liquide à très haute pression.Apparatus according to any one of claims 11 to 14, characterized in that it comprises a device for injecting air in the vicinity of the jet of liquid at very high pressure.
EP91402175A 1991-05-14 1991-08-02 Method and apparatus for creating thin walls in the ground Expired - Lifetime EP0513461B1 (en)

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FR9105798A FR2676479A1 (en) 1991-05-14 1991-05-14 METHOD FOR PRODUCING THIN WALLS IN SOIL AND DEVICE FOR IMPLEMENTING SAME.

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EP0513461B1 EP0513461B1 (en) 1995-05-10

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Publication number Priority date Publication date Assignee Title
US3802203A (en) * 1970-11-12 1974-04-09 Yoshio Ichise High pressure jet-grouting method
FR2316383A1 (en) * 1975-07-03 1977-01-28 Soletanche METHOD AND DEVICE FOR THE REALIZATION OF SEALING SCREENS IN THE GROUND BY LAUNCHING
FR2421993A1 (en) * 1978-04-06 1979-11-02 Toa Harbor Works Co Ltd PILE DRIVING PROCESS
GB1558694A (en) * 1977-08-10 1980-01-09 Kajima Corp Consolidation of underground masses
DE2844794A1 (en) * 1978-10-13 1980-04-24 Brechtel Johannes Narrow pile driven retaining wall injection rammer - has nozzle at pipe end in downward protruding foot piece

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55105021A (en) * 1979-02-07 1980-08-12 Shigeo Takamura High pressure chemichal liquid grouting method utilizing high frequency vibration pressure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802203A (en) * 1970-11-12 1974-04-09 Yoshio Ichise High pressure jet-grouting method
FR2316383A1 (en) * 1975-07-03 1977-01-28 Soletanche METHOD AND DEVICE FOR THE REALIZATION OF SEALING SCREENS IN THE GROUND BY LAUNCHING
GB1558694A (en) * 1977-08-10 1980-01-09 Kajima Corp Consolidation of underground masses
FR2421993A1 (en) * 1978-04-06 1979-11-02 Toa Harbor Works Co Ltd PILE DRIVING PROCESS
DE2844794A1 (en) * 1978-10-13 1980-04-24 Brechtel Johannes Narrow pile driven retaining wall injection rammer - has nozzle at pipe end in downward protruding foot piece

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 4, no. 154 (M-38)28 Octobre 1980 & JP-A-55 105 021 ( SHIGEO ) 12 Août 1980 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0653518A1 (en) * 1993-11-12 1995-05-17 Compagnie Du Sol Method for creating thin walls in the ground
FR2712317A1 (en) * 1993-11-12 1995-05-19 Sol Cie Process for producing thin walls in the soil

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SK283977B6 (en) 2004-06-08
DE69109663D1 (en) 1995-06-14
ES2036508T3 (en) 1995-07-16
DE513461T1 (en) 1993-05-19
WO1992020873A1 (en) 1992-11-26
DE69109663T2 (en) 1995-09-07
CZ283668B6 (en) 1998-05-13
GR930300017T1 (en) 1993-04-28
HUT63894A (en) 1993-10-28
EP0513461B1 (en) 1995-05-10
CZ390492A3 (en) 1993-07-14
ATE122426T1 (en) 1995-05-15
HU9300018D0 (en) 1993-06-28
DK0513461T3 (en) 1995-07-17
ES2036508T1 (en) 1993-06-01
SK9193A3 (en) 1993-07-07
FR2676479B1 (en) 1995-06-02
HU216962B (en) 1999-10-28
FR2676479A1 (en) 1992-11-20

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