EP0612889B1 - Lock for soil treating apparatus with rotating jet(s) - Google Patents
Lock for soil treating apparatus with rotating jet(s) Download PDFInfo
- Publication number
- EP0612889B1 EP0612889B1 EP94400368A EP94400368A EP0612889B1 EP 0612889 B1 EP0612889 B1 EP 0612889B1 EP 94400368 A EP94400368 A EP 94400368A EP 94400368 A EP94400368 A EP 94400368A EP 0612889 B1 EP0612889 B1 EP 0612889B1
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- European Patent Office
- Prior art keywords
- borehole
- tubes
- string
- valve
- jet
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- 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.)
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Definitions
- the invention relates to an airlock installation for a soil treatment device using a rotary jet (s).
- an exogenous material or grout is introduced into the terrain considered from a borehole in the form of at least one jet suitably oriented at high speed which, on its path, destructs the terrain in place, and, according to the nature of the said ground, either mixes with the constituent elements of the latter and leads, after setting, to the formation of a mortar or concrete of soil (case, for example, gravelly or sandy grounds), or replaces purely and simply the ground and leads, after setting, to the formation of a hardened grout (case, for example, clayey grounds).
- the jet depending on the flow rate, the driving pressure and the characteristics of the terrain, have a certain radius of action.
- sealing screens by the juxtaposition of a plurality of cylindrical elements (or columns) of ground thus treated over a certain height, made from a mesh of parallel boreholes of density such that the elements or columns overlap so as to constitute a continuous solid mass.
- cylindrical elements or columns of this type can be used as load-bearing elements.
- the jets used can be of various types, that is to say consist of a simple grout jet, or a grout jet surrounded by an annular air jet to increase the radius of action , or a combination of a jet of water surrounded by an annular air jet ensuring the destructuring of the ground and a separate grout jet, usually provided at a level lower than that of the water jet.
- a device comprising a central for producing a cement grout supplying in grout one or more pumps connected, by means of a rotary joint, to a train of tubes introduced in the drilling where the jet treatment must be done.
- the tube train can be driven in translation and rotation by means of a hydraulic rotary head enclosing the upper end of the tube train, which is itself mounted on a drilling slide.
- the pump or pumps deliver the destructuring fluid (grout or water) at pressures of the order of 200 to 700 bars or more.
- the tube train is formed of connectable unitary tubular sections provided with suitable seals and each section can be formed of a single tube (single jet) or of several coaxial tubes (double or triple jet). Liquids (grout, water) are ejected through one or more nozzles with a diameter of 2 to 4 mm approximately.
- the tube train sections can have a diameter of approximately 50 to 200 mm.
- a drilling tool can also be provided, below the nozzles, at the lower end of the tube train to carry out the drilling in which the treatment will be carried out.
- This tool can be full or be the seat of a circulation of a drilling fluid supplied by the train of tubes. In the latter case, this tool can be equipped with a non-return device to prevent sediments from clogging the interior of the train of tubes during the maneuver of adding or removing a tubular section.
- drilling can be performed beforehand by a separate device.
- the jet treatment is started by positioning the jet device at the bottom of the borehole, driving the tube train in a rotational and translational movement towards the head of the borehole until a column of land is obtained. treated of the desired height.
- the object of the invention is precisely to propose an installation making it possible to maintain a pressure in the annular space of the drilling existing between the wall of the drilling and the train of tubes, and to control the flow of material which must inevitably be evacuated from the drilling.
- control of the adjustable valve of the discharge pipe can be controlled by the pressure prevailing in the borehole and carried out automatically by an appropriate device.
- a socket making it possible to connect the enclosure to a source of pressurized fluid in order to maintain a pressure in the borehole in the event that it comes to drop in- below a predetermined threshold.
- the enclosure is removable in at least two parts, namely a lower part equipped with the shut-off valve and an upper part provided with the orifice (s).
- Figure 1 which is mounted in the continuity of a borehole 1 receiving a soil treatment device by rotary jet (s) of the type described in the aforementioned French patent application, of which there is no illustrated that the tube train 2 and the pipes flexible, such as 3a and 3b, for supplying the nozzles comprises an enclosure 4 forming an airlock, mounted in the extension of the borehole 1, a seal 5 ensuring the seal between the base of the enclosure and the wall of the borehole.
- the enclosure 4 for example made of steel, consists of a lower part 4a and an upper part 4b secured, for example, by bolting.
- the upper part 4b is provided with orifices 6, 7 and 8 for the passage of the train of tubes 2 and the pipes 3a and 3b, respectively, annular seals 9, 10 and 11 being provided to ensure sealing while allowing the movement or sliding of organs 2, 3a and 3b.
- the lower part 4a is equipped, in the vicinity of its junction with the part 4b, with a shut-off valve 12 of the full-passage type and with a discharge pipe 13 for the materials leaving the borehole on which a valve is installed. 14, the adjustment of which is carried out automatically as a function of the pressure prevailing in the borehole by means of a device 15 connected to a pressure probe 16 mounted in the enclosure.
- the role of the valve 14 is to maintain the pressure prevailing in the drilling within a range of predetermined values and to prevent excessive potentially dangerous pressure from developing in the drilling.
- the installation comprises a tube 17 connected to the enclosure and provided with a valve 18, which can be connected, if necessary, to a source of pressurized fluid in the event that the pressure in the borehole drops, to any reason, below a desired value.
- Figures 2 and 3 illustrate the mounting of the soil treatment device by rotary jet (s) in the installation of Figure 1.
- the stop valve 12 After positioning the lower part 4a in the borehole 1 and sealing it Ci by the seal 5 as illustrated in Figure 2, we close the stop valve 12.
- the nozzle head 20 of the treatment device by rotary jet (s) we then position on the valve 12, the nozzle head 20 of the treatment device by rotary jet (s), then the tube train 2 and the flexible hoses 3a, 3b are connected to this head after passing them through the orifices 6, 7 and 8 of the upper part 4b of the enclosure, as illustrated in Figure 3. After that, it only remains to bolt together parts 4a and 4b to complete the installation.
- the valve 12 Before lowering the head 20 into the borehole, the valve 12 is obviously opened. When it is desired to remove the head 20 from the borehole, the operation is carried out in reverse from that which has just been described.
- the enclosure should be adapted by providing only the single orifice 6 and omitting the orifices 7 and 8.
- the installation thus makes it possible to implement a device for treating the soil by rotary jet (s) under site conditions requiring working with a borehole maintained under pressure, while making it possible to control the flow of materials leaving the drilling.
Abstract
Description
L'invention concerne une installation à sas pour dispositif de traitement des sols par jet(s) rotatif(s).The invention relates to an airlock installation for a soil treatment device using a rotary jet (s).
Le procédé de traitement des sols par jet(s) rotatif(s) est bien connu et est utilisé pour la réalisation d'écrans d'étanchéité dans la masse d'un terrain perméable.The process of soil treatment by rotary jet (s) is well known and is used for the production of waterproofing screens in the mass of permeable ground.
Selon ce procédé, un matériau exogène ou coulis est introduit dans le terrain considéré à partir d'un forage sous la forme d'au moins un jet convenablement orienté à grande vitesse qui, sur sa trajectoire, déstructure le terrain en place, et, selon la nature dudit terrain, soit se mélange avec les éléments constitutifs de ce dernier et conduit, après prise, à la formation d'un mortier ou béton de sol (cas, par exemple, des terrains graveleux ou sableux), soit remplace purement et simplement le terrain et conduit, après prise, à la formation d'un coulis durci (cas, par exemple, des terrains argileux). Le ou les jet(s), en fonction du débit, de la pression motrice et des caractéristiques du terrain, ont un certain rayon d'action. Si l'outil assurant la formation du jet est mis en rotation-translation lente à l'intérieur du forage, on obtient un volume plus ou moins cylindrique de terrain traité ayant pour rayon le rayon d'action du ou des jets dans les conditions considérées, et une hauteur correspondant à l'amplitude du mouvement de translation.According to this method, an exogenous material or grout is introduced into the terrain considered from a borehole in the form of at least one jet suitably oriented at high speed which, on its path, destructs the terrain in place, and, according to the nature of the said ground, either mixes with the constituent elements of the latter and leads, after setting, to the formation of a mortar or concrete of soil (case, for example, gravelly or sandy grounds), or replaces purely and simply the ground and leads, after setting, to the formation of a hardened grout (case, for example, clayey grounds). The jet (s), depending on the flow rate, the driving pressure and the characteristics of the terrain, have a certain radius of action. If the tool ensuring the formation of the jet is set in slow rotation-translation inside the borehole, a more or less cylindrical volume of treated ground is obtained having as a radius the radius of action of the jet (s) under the conditions considered. , and a height corresponding to the amplitude of the translational movement.
On comprend aisément qu'il est ainsi possible de réaliser, par cette technique de jet, des écrans d'étanchéité par la juxtaposition d'une pluralité d'éléments cylindriques (ou colonnes) de terrain ainsi traité sur une certaine hauteur, réalisés à partir d'un maillage de forages parallèles de densité telle que les éléments ou colonnes se recoupent de façon à constituer un massif continu. Egalement, on peut utiliser des éléments cylindriques ou colonnes de ce type en tant qu'éléments porteurs.It is easily understood that it is thus possible to produce, by this jet technique, sealing screens by the juxtaposition of a plurality of cylindrical elements (or columns) of ground thus treated over a certain height, made from a mesh of parallel boreholes of density such that the elements or columns overlap so as to constitute a continuous solid mass. Also, cylindrical elements or columns of this type can be used as load-bearing elements.
Les jets utilisés peuvent être de divers types, c'est-à-dire être constitués d'un simple jet de coulis, ou d'un jet de coulis entouré d'un jet d' air annulaire pour en accroître le rayon d'action, ou d'une association d'un jet d'eau entouré d'un jet d'air annulaire assurant la déstructuration du terrain et d'un jet de coulis distinct, habituellement prévu à un niveau inférieur à celui du jet d'eau.The jets used can be of various types, that is to say consist of a simple grout jet, or a grout jet surrounded by an annular air jet to increase the radius of action , or a combination of a jet of water surrounded by an annular air jet ensuring the destructuring of the ground and a separate grout jet, usually provided at a level lower than that of the water jet.
Pour la mise en oeuvre de ce procédé, on utilise habituellement un dispositif comprenant une centrale de production d'un coulis de ciment alimentant en coulis une ou plusieurs pompes reliées, par l'intermédiaire d'un joint tournant, à un train de tubes introduit dans le forage où doit se faire le traitement par jet. Le train de tubes peut être entraîné en translation et rotation grâce à une tête rotative hydraulique enserrant l'extrémité supérieure du train de tubes, qui est elle-même montée sur une glissière de forage. La ou les pompes délivrent le fluide déstructurant (coulis ou eau) à des pressions de l'ordre de 200 à 700 bars ou plus.For the implementation of this method, a device is usually used comprising a central for producing a cement grout supplying in grout one or more pumps connected, by means of a rotary joint, to a train of tubes introduced in the drilling where the jet treatment must be done. The tube train can be driven in translation and rotation by means of a hydraulic rotary head enclosing the upper end of the tube train, which is itself mounted on a drilling slide. The pump or pumps deliver the destructuring fluid (grout or water) at pressures of the order of 200 to 700 bars or more.
Le train de tubes est formé de tronçons tubulaires unitaires raccordables munis de joints d'étanchéité appropriés et chaque tronçon peut être formé d'un simple tube (jet simple) ou de plusieurs tubes coaxiaux (jet double ou triple). Les liquides (coulis, eau) sont éjectés par une ou des buse(s) d'un diamètre de 2 à 4 mm environ. Les tronçons de train de tubes peuvent avoir un diamètre de 50 à 200 mm environ.The tube train is formed of connectable unitary tubular sections provided with suitable seals and each section can be formed of a single tube (single jet) or of several coaxial tubes (double or triple jet). Liquids (grout, water) are ejected through one or more nozzles with a diameter of 2 to 4 mm approximately. The tube train sections can have a diameter of approximately 50 to 200 mm.
Tout récemment, un perfectionnement a été proposé , dans la demande de brevet français No. 92 13154 déposée le 3 Novembre 1992 (correspondant au document EP-A-0596792 formant l'état de la technique selon l'Article 54(3) CBE), ce perfectionnement consistant à utiliser des tuyaux flexibles, extérieurs au train de tubes, pour alimenter les buses, le train de tubes ne jouant plus qu'un rôle d'entraînement mécanique et étant animé d'un mouvement rotatif non plus continu, mais alternatif.Very recently, an improvement was proposed, in the French patent application No. 92 13154 filed on November 3, 1992 (corresponding to the document EP-A-0596792 forming the state of the art according to Article 54 (3) EPC) , this improvement consisting in using flexible pipes, external to the train of tubes, to supply the nozzles, the train of tubes playing no more than a mechanical drive role and being driven by a rotary movement no longer continuous, but alternating .
Un outil de forage peut être prévu, en outre, au-dessous des buses, à l'extrémité inférieure du train de tubes pour réaliser le forage dans lequel s'effectuera le traitement. Cet outil peut être plein ou être le siège d'une circulation d'un fluide de forage alimenté par le train de tubes. Dans ce dernier cas, cet outil peut être équipé d'un dispositif anti-retour pour éviter que des sédiments obturent l'intérieur de train de tubes lors de la manoeuvre d'ajout ou de retrait d'un tronçon tubulaire. En variante, le forage peut être exécuté préalablement par un dispositif distinct.A drilling tool can also be provided, below the nozzles, at the lower end of the tube train to carry out the drilling in which the treatment will be carried out. This tool can be full or be the seat of a circulation of a drilling fluid supplied by the train of tubes. In the latter case, this tool can be equipped with a non-return device to prevent sediments from clogging the interior of the train of tubes during the maneuver of adding or removing a tubular section. Alternatively, drilling can be performed beforehand by a separate device.
En pratique le traitement par jet est commencé en positionnant le dispositif à jet au fond du forage, en entraînant le train de tubes selon un mouvement de rotation et de translation vers la tête du forage jusqu'à ce qu'on obtienne une colonne de terrain traité de la hauteur voulue.In practice, the jet treatment is started by positioning the jet device at the bottom of the borehole, driving the tube train in a rotational and translational movement towards the head of the borehole until a column of land is obtained. treated of the desired height.
Dans certaines conditions de travail, par exemple dans le cas de forages remontants où les matériaux éjectés par le dispositif à jet ont tendance à s'échapper par gravité du forage, ou dans le cas de forages dont la tête se trouve à un niveau inférieur à celui d'une nappe d'eau souterraine, il est apparu des difficultés dans la mise en oeuvre des dispositifs à jet(s), liées au fait qu'on ne sait pas maîtriser le débit de matériau qui sort du forage.Under certain working conditions, for example in the case of upwelling boreholes where the materials ejected by the jet device tend to escape by gravity from the borehole, or in the case of boreholes whose head is at a level below that of a groundwater table, it appeared difficulties in the implementation of jet devices, related to the fact that we do not know how to control the flow of material that comes out of the borehole.
Il existe donc un besoin pour un matériel qui permettrait de combler cette lacune.There is therefore a need for equipment which would fill this gap.
L'invention a justement pour but de proposer une installation permettant de maintenir une pression dans l'espace annulaire du forage existant entre la paroi du forage et le train de tubes, et de maîtriser le débit de matériau qui doit être inévitablement évacué du forage.The object of the invention is precisely to propose an installation making it possible to maintain a pressure in the annular space of the drilling existing between the wall of the drilling and the train of tubes, and to control the flow of material which must inevitably be evacuated from the drilling.
Plus particulièrement, l'invention concerne une installation destinée à être utilisée conjointement avec un dispositif de traitement des sols par jet(s) rotatif(s) comprenant un train de tubes à la base duquel est montée au moins une buse d'éjection, cette buse étant alimentée en matériau à éjecter par le moyen du train de tubes ou de tuyaux flexibles extérieurs au train de tubes, ladite installation étant caractérisée en ce qu'elle comprend :
- une enceinte disposée en surface dans la continuité du forage et en relation étanche avec celui-ci, cette enceinte étant pourvue d'au moins un orifice muni d'un joint d'étanchéité pour le passage du train de tubes et des tuyaux flexibles éventuellement présents,
- une vanne d'arrêt permettant d'obturer complètement le forage, et
- un conduit d'évacuation des matériaux sortant du forage, raccordé à ladite enceinte et pourvu d'une vanne réglable permettant d'ajuster le débit desdits matériaux afin d'éviter l'établissement dans le forage d'une pression excessive.
- an enclosure arranged on the surface in the continuity of the borehole and in leaktight relation thereto, this enclosure being provided with at least one orifice provided with a seal for the passage of the train of tubes and the flexible hoses which may be present,
- a stop valve making it possible to completely shut off the borehole, and
- a material evacuation pipe leaving the borehole, connected to said enclosure and provided with an adjustable valve making it possible to adjust the flow rate of said materials in order to avoid the establishment of excessive pressure in the borehole.
Facultativement, la commande de la vanne réglable du conduit d'évacuation peut être asservie à la pression régnant dans le forage et effectuée automatiquement par un dispositif approprié.Optionally, the control of the adjustable valve of the discharge pipe can be controlled by the pressure prevailing in the borehole and carried out automatically by an appropriate device.
Egalement, si désiré, il peut être prévu sur l'enceinte, une prise permettant de relier l'enceinte à une source de fluide sous pression dans le but de maintenir une pression dans le forage au cas où celle-ci viendrait à chuter en-dessous d'un seuil prédéterminé.Also, if desired, there can be provided on the enclosure, a socket making it possible to connect the enclosure to a source of pressurized fluid in order to maintain a pressure in the borehole in the event that it comes to drop in- below a predetermined threshold.
De préférence, l'enceinte est démontable en au moins deux parties, à savoir une partie inférieure équipée de la vanne d'arrêt et une partie supérieure pourvue du ou des orifice(s).Preferably, the enclosure is removable in at least two parts, namely a lower part equipped with the shut-off valve and an upper part provided with the orifice (s).
La description qui va suivre, faite en se référant aux dessins annexés, fera bien comprendre la structure et le fonctionnement de l'installation de l'invention.The description which follows, made with reference to the accompanying drawings, will make it possible to understand the structure and the operation of the installation of the invention.
Sur les dessins :
- la figure 1 est une vue schématique d'une installation selon l'invention ; et
- les figures 2 et 3 sont des vues schématiques illustrant le montage du dispositif de traitement par jet(s) rotatif(s) dans l'installation de la figure 1.
- Figure 1 is a schematic view of an installation according to the invention; and
- Figures 2 and 3 are schematic views illustrating the mounting of the rotary jet treatment device (s) in the installation of Figure 1.
L'installation de la figure 1, qui est montée dans la continuité d'un forage 1 recevant un dispositif de traitement des sols par jet(s) rotatif(s) du type décrit dans la demande de brevet français précitée, dont on n'a illustré que le train de tubes 2 et les tuyaux flexibles, tels que 3a et 3b, d'alimentation des buses comprend une enceinte 4 formant sas, montée dans le prolongement du forage 1, un joint 5 assurant l'étanchéité entre la base de l'enceinte et la paroi du forage. L'enceinte 4, par exemple en acier, est constituée d'une partie inférieure 4a et d'une partie supérieure 4b solidarisées, par exemple, par boulonnage. La partie supérieure 4b est pourvue d'orifices 6, 7 et 8 pour le passage du train de tubes 2 et des tuyaux 3a et 3b, respectivement, des joints annulaires 9,10 et 11 étant prévus pour assurer l'étanchéité tout en permettant le mouvement ou le coulissement des organes 2, 3a et 3b. La partie inférieure 4a est équipée, au voisinage de sa jonction avec la partie 4b, d'une vanne d'arrêt 12 du type à passage intégral et d'un conduit d'évacuation 13 des matériaux sortant du forage sur lequel est installée une vanne 14 dont le réglage s'effectue automatiquement en fonction de la pression régnant dans le forage par l'intermédiaire d'un dispositif 15 reliée à une sonde de pression 16 montée dans l'enceinte. Le rôle de la vanne 14 est de maintenir la pression régnant dans le forage dans une gamme de valeurs prédéterminées et d'éviter qu'une pression excessive potentiellement dangereuse ne se développe dans le forage.The installation of Figure 1, which is mounted in the continuity of a
Enfin, l'installation comprend une tubulure 17 raccordée à l'enceinte et pourvue d'une vanne 18, pouvant être raccordée, si nécessaire, à une source de fluide sous pression dans le cas où la pression dans le forage viendrait à chuter, pour une raison quelconque, en-dessous d'une valeur désirée.Finally, the installation comprises a
Les figures 2 et 3 illustrent le montage du dispositif de traitement des sols par jet(s) rotatif(s) dans l'installation de la figure 1. Après mise en place de la partie inférieure 4a dans le forage 1 et scellement de celle-ci par le joint 5 comme l'illustre la figure 2, on ferme la vanne d'arrêt 12. On vient alors positionner sur la vanne 12, la tête à buses 20 du dispositif de traitement par jet(s) rotatif(s), puis on raccorde à cette tête le train de tubes 2 et les tuyaux flexibles 3a, 3b après les avoir passés dans les orifices 6, 7 et 8 de la partie supérieure 4b de l'enceinte, comme l'illustre la figure 3. Après cela, il ne reste plus qu'à boulonner ensemble les parties 4a et 4b pour compléter l'installation. Avant de descendre la tête 20 dans le forage, on ouvre, bien évidemment, la vanne 12. Lorsqu'on désire enlever la tête 20 du forage, on procède à la manoeuvre inverse de celle qui vient d'être décrite.Figures 2 and 3 illustrate the mounting of the soil treatment device by rotary jet (s) in the installation of Figure 1. After positioning the
Il va de soi, bien entendu, que si le dispositif à jet(s) rotatif(s) utilisé comportait un train de tubes assurant simultanément l'alimentation des buses, c'est-à-dire était un dispositif à jet(s) rotatif(f) classique, dépourvu de tuyaux d'alimentation flexibles, il conviendrait d'adapter l'enceinte en ne prévoyant que le seul orifice 6 et en omettant les orifices 7 et 8.It goes without saying, of course, that if the rotary jet device (s) used included a train of tubes simultaneously supplying the nozzles, that is to say was a jet device (s) rotary (f) conventional, devoid of flexible supply hoses, the enclosure should be adapted by providing only the
L'installation permet ainsi de mettre en oeuvre un dispositif de traitement de sols par jet(s) rotatif(s) dans des conditions de chantier nécessitant de travailler avec un forage maintenu sous pression, tout en permettant de maîtriser le débit des matériaux sortant du forage.The installation thus makes it possible to implement a device for treating the soil by rotary jet (s) under site conditions requiring working with a borehole maintained under pressure, while making it possible to control the flow of materials leaving the drilling.
Il va de soi que le mode de réalisation décrit n'est qu'un exemple et que l'on pourrait le modifier, notamment par substitution d'équivalents techniques, sans sortir pour cela du cadre de l'invention comme définie dans les revendications.It goes without saying that the embodiment described is only an example and that it could be modified, in particular by substitution of technical equivalents, without departing from the scope of the invention as defined in the claims.
Claims (4)
- Installation intended to be used in conjunction with a device for treating soils with at least one rotary jet, comprising a string of tubes (2) at the base of which at least one ejection nozzle is mounted, this nozzle being supplied with material to be ejected by means of the string of tubes (2) or flexible pipes (3a, 3b) external to the string of tubes, said installation being characterized in that it comprises:- a chamber (4) arranged at the surface in continuation of the borehole and in leaktight connection therewith, this chamber being provided with at least one orifice (6, 7, 8) fitted with a sealing gasket (9, 10, 11) for the passage of the string of tubes and of the flexible pipes, if present,- a shut-off valve (12) making it possible to close the borehole completely, and- a conduit (13) for removing the materials leaving the borehole, connected to the said chamber and provided with an adjustable valve (14) for adjusting the flow rate of said materials in order to avoid the establishment in the borehole of an excessive pressure.
- Installation according to Claim 1, characterized in that the control of the adjustable removal valve is slaved to the pressure prevailing in the borehole.
- Installation according to Claim 1, characterized in that it further comprises a tap (17, 18) for connecting the chamber to a pressurized fluid source.
- Installation according to Claim 1, characterized in that said chamber (4) can be dismantled into at least two parts, namely a lower part (4a) equipped with said shut-off valve (12) and an upper part (4b) provided with said orifices (6, 7, 8).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9301992A FR2701973B1 (en) | 1993-02-22 | 1993-02-22 | Airlock installation for soil treatment device by rotary jet (s). |
| FR9301992 | 1993-02-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0612889A1 EP0612889A1 (en) | 1994-08-31 |
| EP0612889B1 true EP0612889B1 (en) | 1997-12-03 |
Family
ID=9444295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94400368A Revoked EP0612889B1 (en) | 1993-02-22 | 1994-02-21 | Lock for soil treating apparatus with rotating jet(s) |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0612889B1 (en) |
| JP (1) | JPH06240658A (en) |
| AT (1) | ATE160831T1 (en) |
| AU (1) | AU668264B2 (en) |
| DE (1) | DE69407072T2 (en) |
| DK (1) | DK0612889T3 (en) |
| FR (1) | FR2701973B1 (en) |
| GR (1) | GR3025919T3 (en) |
| HK (1) | HK1002436A1 (en) |
| MY (1) | MY110541A (en) |
| SG (1) | SG44392A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2697551B1 (en) * | 1992-11-03 | 1994-12-09 | Sif Entreprise Bachy | Improved device for the treatment of soils by rotary jet (s). |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL38682C (en) * | 1927-11-17 | 1900-01-01 | ||
| DE1634565B2 (en) * | 1964-05-22 | 1973-02-08 | Schdruzeni kamenouhelnych dolu, Kladno (Tschechoslowakei) | INJECTION DEVICE FOR INJECTING TWO REACTING LIQUIDS TO SEAL THE BUILDING GROUND |
| NO167051C (en) * | 1989-02-02 | 1991-09-25 | L Oe Hoksrud | PROCEDURE FOR THE ESTABLISHMENT OF CONCRETE CONSTRUCTIONS IN LOANS, FROM THE TERRACE LEVEL, AND EQUIPMENT FOR EXERCISING THE PROCEDURE |
-
1993
- 1993-02-22 FR FR9301992A patent/FR2701973B1/en not_active Expired - Fee Related
-
1994
- 1994-02-16 AU AU55189/94A patent/AU668264B2/en not_active Ceased
- 1994-02-18 MY MYPI94000382A patent/MY110541A/en unknown
- 1994-02-21 SG SG1996000095A patent/SG44392A1/en unknown
- 1994-02-21 EP EP94400368A patent/EP0612889B1/en not_active Revoked
- 1994-02-21 DK DK94400368.0T patent/DK0612889T3/en active
- 1994-02-21 DE DE69407072T patent/DE69407072T2/en not_active Revoked
- 1994-02-21 AT AT94400368T patent/ATE160831T1/en not_active IP Right Cessation
- 1994-02-22 JP JP6024439A patent/JPH06240658A/en active Pending
-
1998
- 1998-01-15 GR GR980400089T patent/GR3025919T3/en unknown
- 1998-02-24 HK HK98101421A patent/HK1002436A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2701973B1 (en) | 1995-04-07 |
| DE69407072T2 (en) | 1998-07-09 |
| MY110541A (en) | 1998-07-31 |
| FR2701973A1 (en) | 1994-09-02 |
| DK0612889T3 (en) | 1998-04-14 |
| ATE160831T1 (en) | 1997-12-15 |
| HK1002436A1 (en) | 1998-08-21 |
| GR3025919T3 (en) | 1998-04-30 |
| DE69407072D1 (en) | 1998-01-15 |
| JPH06240658A (en) | 1994-08-30 |
| AU5518994A (en) | 1994-08-25 |
| AU668264B2 (en) | 1996-04-26 |
| EP0612889A1 (en) | 1994-08-31 |
| SG44392A1 (en) | 1997-12-19 |
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