EP1527235B1 - Nozzle jet device - Google Patents

Nozzle jet device Download PDF

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Publication number
EP1527235B1
EP1527235B1 EP03790693A EP03790693A EP1527235B1 EP 1527235 B1 EP1527235 B1 EP 1527235B1 EP 03790693 A EP03790693 A EP 03790693A EP 03790693 A EP03790693 A EP 03790693A EP 1527235 B1 EP1527235 B1 EP 1527235B1
Authority
EP
European Patent Office
Prior art keywords
suspension
pipe
jet
mouth
grouting apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03790693A
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German (de)
French (fr)
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EP1527235A1 (en
Inventor
Klaus Dietz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stump Spezialtiefbau GmbH
Original Assignee
Stump Spezialtiefbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stump Spezialtiefbau GmbH filed Critical Stump Spezialtiefbau GmbH
Publication of EP1527235A1 publication Critical patent/EP1527235A1/en
Application granted granted Critical
Publication of EP1527235B1 publication Critical patent/EP1527235B1/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/26—Compacting soil locally before forming foundations; Construction of foundation structures by forcing binding substances into gravel fillings

Definitions

  • the invention relates to a nozzle jet device for producing a nozzle jet element in the earth region, with a linkage, which has a centric suspension tube and an air feed according to the preamble of claim 1.
  • the suspension tube has a plurality of deflections, resulting in a total of a fluidically unfavorable course of the dispensed medium.
  • nozzle jet devices such as those used in the so-called HDI process (high-pressure injection method) application.
  • a threaded actuator is used, which is connected to a drill string (DE 197 31 223 C2). At the lower end of this drill pipe outlet nozzles, from each of which a jet of jet is discharged.
  • the present invention has for its object to provide a device of the type mentioned by which is optimized in terms of aerodynamics in a simple manner in the manufacture of a nozzle jet element in the earth region of the suspension jet.
  • This object is achieved in that at a steady curve between the vertical centric suspension tube and the air supply on the one hand and the mouth areas for the suspension and air of the nozzle carrier on the other hand in the transition region between the vertical part of the suspension tube and in the mouth region for the suspension of Nozzle carrier ending angled part of the suspension tube is arranged to the mouth opening valve.
  • a continuous curve is advantageously created between the vertical suspension tube or the air feed and the angularly, preferably horizontally arranged, mouth regions of the nozzle carrier, whereby a flow-technically optimal delivery of the suspension jet is ensured.
  • valve may be formed as a spring-loaded, adjustable ball seat valve.
  • the nozzle carrier may according to another feature of the invention as a pear-shaped in outline for a part of the vertical centric suspension tube, the air supply surrounding the tube, the angled parts of the suspension tube, the air supply and the mouth areas for the suspension or the air be educated.
  • the linkage may be formed as a drill pipe.
  • a nozzle jet device 1 for producing a nozzle jet element 2 in the soil 8 is shown. It can find a frontal reamer 3 with drill bit 4 and an adjoining, vertical drill pipe 5 application.
  • This vertical drill string 5 has a centric suspension tube 10 and an air feed 12, which surrounds the suspension tube 10.
  • a separate water channel can be used.
  • a nozzle carrier 20 is disposed between an end portion 14 of the vertical drill pipe 5 and the reamer 3.
  • this nozzle carrier 20 are z.
  • Fig. 1 it is also recognizable that between the vertical suspension tube 10 and a terminating in the mouth region 22 of the nozzle carrier 20 horizontal part 26 of the suspension tube 10 to the mouth opening valve 30 is arranged.
  • This valve 30 is formed for example as a ball seat valve, with a ball 34 and a spring 32 and an adjusting element 36.
  • this adjusting element 36 which, for example, stored in a threaded opening, the pressing force of the spring 32 against the ball 34 can be regulated.
  • the nozzle carrier 20 is formed as a pear-shaped housing in outline, and has a portion 10 'of the vertical centric suspension tube 10, the tube 10' surrounding air supply 12 'and the horizontal portion 26 of the suspension tube 10, the corresponding air supply and the mouth areas 22 and 24 for the suspension or for the air.
  • the nozzle carrier 20 may, for. B. also have a biconical shape.
  • interchangeable nozzles 40 (or according to FIG. 2) 40 'can be inserted into the mouth region 22 for the suspension.
  • These nozzles are designed according to the soil to be processed 8, can be easily replaced in the nozzle carrier 20 and have different sections with preferably constant slope.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Soil Sciences (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Surgical Instruments (AREA)
  • Earth Drilling (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Soil Working Implements (AREA)

Abstract

A nozzle support (20) at the end of the drillrod (5) contains the air feed (12) and suspension pipe (10) outlets (22,24) at an angle to the drillrod. The suspension pipe and air feed steadily curve round to the mouth outlets (22,24) and a ball valve (30) between suspension pipe (10) and in-mouth pipe part comprises a ball (3) opening opening up towards the outlets against its loadspring (32) when the suspension is fed down the pipe (10). The nozzle support presents a pear-shaped housing or a double cone to take part of the suspension pipe (10) and air feed (12). The mouth outlets (22,24) can be fitted with exchangeable nozzles, differing in section but equal in pitch.

Description

Die Erfindung bezieht sich auf eine Düsenstrahlvorrichtung zum Herstellen eines Düsenstrahlelements im Erdbereich, mit einem Gestänge, welches ein zentrisches Suspensionsrohr und eine Luftzuführung aufweist nach dem Oberbegriff des Anspruchs 1.The invention relates to a nozzle jet device for producing a nozzle jet element in the earth region, with a linkage, which has a centric suspension tube and an air feed according to the preamble of claim 1.

Als Stand der Technik ist bereits eine derartige Düsenstrahlvorrichtung bekannt (US-A-5,228,809), dessen Suspensionsrohr mehrere Umlenkungen aufweist, woraus insgesamt ein strömungstechnisch ungünstiger Verlauf des abzugebenden Mediums resultiert.As the prior art, such a nozzle jet device is already known (US-A-5,228,809), the suspension tube has a plurality of deflections, resulting in a total of a fluidically unfavorable course of the dispensed medium.

Zum allgemeinen Stand der Technik zählen Düsenstrahlvorrichtungen, wie sie beispielsweise beim sogenannten HDI-Verfahren (Hochdruckinjektionsverfahren) Anwendung finden. Beispielsweise wird eine Gewindebetätigungsvorrichtung eingesetzt, welche mit einem Bohrgestänge verbunden ist (DE 197 31 223 C2). Am unteren Ende dieses Bohrgestänges sind Austrittsdüsen, aus welchen jeweils ein Düsstrahl abgegeben wird.The general state of the art includes nozzle jet devices, such as those used in the so-called HDI process (high-pressure injection method) application. For example, a threaded actuator is used, which is connected to a drill string (DE 197 31 223 C2). At the lower end of this drill pipe outlet nozzles, from each of which a jet of jet is discharged.

Nachteilig ist bei diesem bekannten Verfahren bzw. der Vorrichtung wiederum der Energieverlust bei der Abgabe der Suspension infolge des strömungstechnisch ungünstigen Verlaufs der die Suspension führenden Rohre.A disadvantage of this known method and the device in turn, the loss of energy in the delivery of the suspension due to the flow unfavorable course of the suspension leading tubes.

Entsprechend liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, durch welche auf einfache Weise beim Herstellen eines Düsenstrahlelements im Erdbereich der Suspensionsstrahl strömungstechnisch optimiert wird.Accordingly, the present invention has for its object to provide a device of the type mentioned by which is optimized in terms of aerodynamics in a simple manner in the manufacture of a nozzle jet element in the earth region of the suspension jet.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass bei einem stetigen Kurvenverlauf zwischen dem vertikalen zentrischen Suspensionsrohr und der Luftzuführung einerseits und den Mündungsbereichen für die Suspension und Luft des Düsenträgers andererseits in dem Übergangsbereich zwischen dem vertikalen Teil des Suspensionsrohres und einem in den Mündungsbereich für die Suspension des Düsenträgers endenden abgewinkelten Teil des Suspensionsrohres ein zum Mündungsbereich sich öffnendes Ventil angeordnet ist. Hierdurch wird vorteilhafterweise ein stetiger Kurvenverlauf zwischen dem vertikalen Suspensionsrohr bzw. der Luftzuführung und den winkelig, vorzugsweise waagerecht angeordneten Mündungsbereichen des Düsenträgers geschaffen, wodurch eine strömungstechnisch optimale Abgabe des Suspensionsstrahls gewährleistet ist.This object is achieved in that at a steady curve between the vertical centric suspension tube and the air supply on the one hand and the mouth areas for the suspension and air of the nozzle carrier on the other hand in the transition region between the vertical part of the suspension tube and in the mouth region for the suspension of Nozzle carrier ending angled part of the suspension tube is arranged to the mouth opening valve. As a result, a continuous curve is advantageously created between the vertical suspension tube or the air feed and the angularly, preferably horizontally arranged, mouth regions of the nozzle carrier, whereby a flow-technically optimal delivery of the suspension jet is ensured.

In weiterer Ausgestaltung der Erfindung kann das Ventil als federbeaufschlagtes, einstellbares Kugelsitzventil ausgebildet sein.In a further embodiment of the invention, the valve may be formed as a spring-loaded, adjustable ball seat valve.

Der Düsenträger kann nach einem anderen Merkmal der Erfindung als ein im Umriss birnenförmiges bzw. doppelkonisches Gehäuse für einen Teil des vertikalen zentrischen Suspensionsrohres, die das Rohr umgebende Luftzuführung, den abgewinkelten Teilen des Suspensionsrohres, die Luftzuführung sowie die Mündungsbereiche für die Suspension bzw. die Luft ausgebildet sein.The nozzle carrier may according to another feature of the invention as a pear-shaped in outline for a part of the vertical centric suspension tube, the air supply surrounding the tube, the angled parts of the suspension tube, the air supply and the mouth areas for the suspension or the air be educated.

Vorteilhafte Weiterbildungen ergeben sich aus den weiteren Unteransprüchen, wobei insbesondere das Gestänge als Bohrgestänge ausgebildet sein kann.Advantageous developments will become apparent from the other dependent claims, in particular, the linkage may be formed as a drill pipe.

Die Erfindung wird nachfolgend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher beschrieben. In der Zeichnung zeigen:

Fig. 1
einen schematischen Schnitt durch einen Düsenträger bei einem Einsatz in einer Bohrung eines Erdreichs,
Fig. 2
eine vergrößerte Darstellung einer anderen Düse im Bereich des Ausschnittes A nach Fig. 1, im Mittelschnitt.
The invention will be described in more detail with reference to embodiments shown in the drawing. In the drawing show:
Fig. 1
a schematic section through a nozzle carrier when used in a hole in a soil,
Fig. 2
an enlarged view of another nozzle in the region of the cutout A of FIG. 1, in the middle section.

In Fig. 1 ist eine Düsenstrahlvorrichtung 1 zum Herstellen eines Düsenstrahlelements 2 im Erdreich 8 dargestellt. Es kann ein stirnseitiger Räumer 3 mit Bohrkrone 4 und ein daran anschließendes, vertikales Bohrgestänge 5 Anwendung finden. Dieses vertikale Bohrgestänge 5 weist ein zentrisches Suspensionsrohr 10 und eine Luftzuführung 12 auf, welche das Suspensionsrohr 10 umgibt. Zusätzlich kann ein separater Wasserkanal eingesetzt werden.In Fig. 1, a nozzle jet device 1 for producing a nozzle jet element 2 in the soil 8 is shown. It can find a frontal reamer 3 with drill bit 4 and an adjoining, vertical drill pipe 5 application. This vertical drill string 5 has a centric suspension tube 10 and an air feed 12, which surrounds the suspension tube 10. In addition, a separate water channel can be used.

Alternativ besteht auch die Möglichkeit, eine Bohrung vorab im Erdreich 8 einzubringen und von dem Einsatz des Räumers 3 und der Bohrkrone 4 abzusehen.Alternatively, it is also possible to introduce a hole in advance in the soil 8 and to refrain from the use of the reamer 3 and the drill bit 4.

Wie ersichtlich, ist zwischen einem Endabschnitt 14 des vertikalen Bohrgestänges 5 und dem Räumer 3 ein Düsenträger 20 angeordnet. In diesem Düsenträger 20 liegen z. B. waagrecht zum Bohrgestänge 5 Mündungsbereiche 22 bzw. 24 des Suspensionsrohres 10 bzw. der Luftzuführung 12. Wie ersichtlich, ist ein stetiger Kurvenverlauf zwischen dem vertikalen zentrischen Suspensionsrohr 10 bzw. der Luftzuführung 12 und der waagrecht angeordneten Mündungsbereiche 22 bzw. 24 des Düsenträgers 20 gegeben.As can be seen, a nozzle carrier 20 is disposed between an end portion 14 of the vertical drill pipe 5 and the reamer 3. In this nozzle carrier 20 are z. As can be seen, is a continuous curve between the vertical centric suspension tube 10 and the air supply 12 and the horizontally arranged mouth regions 22 and 24 of the nozzle carrier 20th given.

Aus Fig. 1 ist darüber hinaus erkennbar, dass zwischen dem vertikalen Suspensionsrohr 10 und einem im Mündungsbereich 22 des Düsenträgers 20 endenden waagrechten Teil 26 des Suspensionsrohres 10 ein zur Mündung sich öffnendes Ventil 30 angeordnet ist. Dieses Ventil 30 ist beispielsweise als Kugelsitzventil ausgebildet, mit einer Kugel 34 sowie einer Feder 32 und einem Verstellelement 36. Durch dieses Verstellelement 36, welches beispielsweise in einer Gewindeöffnung lagert, kann die Andrückkraft der Feder 32 gegen die Kugel 34 reguliert werden.From Fig. 1 it is also recognizable that between the vertical suspension tube 10 and a terminating in the mouth region 22 of the nozzle carrier 20 horizontal part 26 of the suspension tube 10 to the mouth opening valve 30 is arranged. This valve 30 is formed for example as a ball seat valve, with a ball 34 and a spring 32 and an adjusting element 36. By this adjusting element 36, which, for example, stored in a threaded opening, the pressing force of the spring 32 against the ball 34 can be regulated.

Wird nun Suspension durch das Rohr 10 in Pfeilrichtung I gedrückt, so hebt sich die Kugel 34 von ihrem Sitz gegen Wirkung der Feder 32, wodurch die Suspension über das waagrechte Rohrteil 26 und den Mündungsbereich 22 an die Außenwand der Bohrung 2 abgegeben wird, wobei sich der gesamte Düsenträger 20 um seine zentrische Achse dreht. Der Düsenträger 20 ist als im Umriss birnenförmiges Gehäuse ausgebildet, und weist einen Teil 10' des vertikalen zentrischen Suspensionsrohres 10, die dieses Rohr 10' umgebende Luftzuführung 12' sowie dem waagrechten Teil 26 des Suspensionsrohres 10, die entsprechende Luftzuführung und die Mündungsbereiche 22 bzw. 24 für die Suspension bzw. für die Luft auf.Now, if suspension is pressed through the tube 10 in the direction of arrow I, so the ball 34 lifts from its seat against the action of the spring 32, whereby the suspension is discharged through the horizontal tube portion 26 and the mouth portion 22 to the outer wall of the bore 2, wherein the entire nozzle carrier 20 rotates about its central axis. The nozzle carrier 20 is formed as a pear-shaped housing in outline, and has a portion 10 'of the vertical centric suspension tube 10, the tube 10' surrounding air supply 12 'and the horizontal portion 26 of the suspension tube 10, the corresponding air supply and the mouth areas 22 and 24 for the suspension or for the air.

Der Düsenträger 20 kann z. B. auch eine doppelkonische Form aufweisen.The nozzle carrier 20 may, for. B. also have a biconical shape.

Aus der Einzelheit A ist erkennbar, dass in den Mündungsbereich 22 für die Suspension auswechselbare Düsen 40 (bzw. nach Fig. 2) 40' einsetzbar sind. Diese Düsen sind entsprechend des zu bearbeitenden Erdreiches 8 gestaltet, können auf einfache Weise in dem Düsenträger 20 ausgewechselt werden und unterschiedliche Abschnitte mit vorzugsweise konstanter Steigung aufweisen.It can be seen from the detail A that interchangeable nozzles 40 (or according to FIG. 2) 40 'can be inserted into the mouth region 22 for the suspension. These nozzles are designed according to the soil to be processed 8, can be easily replaced in the nozzle carrier 20 and have different sections with preferably constant slope.

Durch den stetigen Kurvenverlauf der Rohre 10 bzw. 10' sowie 26 und den speziell gestalteten Mündungsbereich 22 und der Düsen 40 bzw. 40' ergibt sich eine strömungstechnisch optimierte Abgabe der Suspension, wodurch auf einfache Weise eine wesentlich erhöhte Effektivität der erfindungsgemäßen Düsenstrahlvorrichtung zum Herstellen eines Düsenstrahlelements im Erdreich 8 erzielt wird.Due to the continuous curve of the tubes 10 and 10 'and 26 and the specially designed mouth region 22 and the nozzle 40 and 40' results in a fluidically optimized delivery of the suspension, which in a simple manner a significantly increased efficiency of the nozzle jet device according to the invention for producing a Jet element in the soil 8 is achieved.

Claims (8)

  1. Jet-grouting apparatus (1) for producing a jet-grouted element in the ground, with a rod assembly (5) which has a central suspension pipe (10) and an air inlet pipe (12),
    a nozzle carrier (20) being arranged in an end section (14) of the rod assembly (5), in which nozzle carrier mouth regions (22, 24) of the suspension pipe (10) and of the air inlet pipe (12) lie at an angle to the rod assembly (5),
    characterised
    in that, with a continuous curved course between the vertical central suspension pipe (10) and the air inlet pipe on the one hand and the mouth regions for the suspension and air (22, 24) of the nozzle carrier (20) on the other hand, a valve (30) is arranged in the transition region between the vertical region of the suspension pipe (10) and an angled-off part (26) of the suspension pipe (10) ending in the mouth region for the suspension (22) of the nozzle carrier (20), which valve opens towards the mouth region (22).
  2. Jet-grouting apparatus according to Claim 1, characterized in that the valve is designed as a spring-loaded adjustable ball seat valve (30).
  3. Jet-grouting apparatus according to Claim 1 or 2, characterised in that the nozzle carrier (20) is designed as a housing, with a pear-shaped or biconical outline, for a part (10') of the vertical central suspension pipe (10), the air inlet pipe (12) surrounding the pipe (10), the angled-off part (26) of the suspension pipe, the air inlet pipe and the mouth regions (22, 24) for the suspension and the air, respectively.
  4. Jet-grouting apparatus according to one or more of the preceding claims, characterised in that exchangeable nozzles (40, 40') can be inserted in the mouth region (22) for the suspension in accordance with the ground (8) to be worked.
  5. Jet-grouting apparatus according to Claim 4, characterised in that the nozzles (40, 40') have different sections preferably with a constant slope.
  6. Jet-grouting apparatus according to one or more of the preceding claims, characterised in that the rod assembly (5) is designed as a drill-rod assembly.
  7. Jet-grouting apparatus according to Claim 6, characterised in that the drill-rod assembly has a frontal reamer (3) with a drill bit (4).
  8. Jet-grouting apparatus according to one or more of the preceding claims, characterized in that the mouth regions (22, 24) are arranged at right angles to the vertical central suspension pipe (10) and to the air inlet pipe (12), respectively.
EP03790693A 2002-08-09 2003-08-07 Nozzle jet device Expired - Lifetime EP1527235B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10236257A DE10236257A1 (en) 2002-08-09 2002-08-09 Ground jet system of suspension and air feed fits suspension outlets in end of nozzle support at angle to drillrod so suspension feeds via ball valve to outlets as nozzle support rotates.
DE10236257 2002-08-09
PCT/DE2003/002655 WO2004020742A1 (en) 2002-08-09 2003-08-07 Nozzle jet device

Publications (2)

Publication Number Publication Date
EP1527235A1 EP1527235A1 (en) 2005-05-04
EP1527235B1 true EP1527235B1 (en) 2006-11-02

Family

ID=30775076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03790693A Expired - Lifetime EP1527235B1 (en) 2002-08-09 2003-08-07 Nozzle jet device

Country Status (5)

Country Link
EP (1) EP1527235B1 (en)
AT (1) ATE344351T1 (en)
AU (1) AU2003266112A1 (en)
DE (2) DE10236257A1 (en)
WO (1) WO2004020742A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2933380A1 (en) 2014-04-17 2015-10-21 Bauer Spezialtiefbau GmbH Injection head for a high pressure injection of suspension into a base

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007046721A1 (en) * 2007-09-28 2009-04-09 Universale Grund- Und Sonderbau Gmbh Injection spray monitor i.e. nozzle carrier, for injecting e.g. hardening cement suspension, has injection nozzles setting injection directions having angle, which is less than specific degree, with longitudinal axis in negative z-direction

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DE305235C (en) *
JPS5862212A (en) * 1982-04-05 1983-04-13 Nippon Sogo Bosui Kk Grout injector
DE3407727A1 (en) * 1984-03-02 1985-09-05 Schmidt, Kranz & Co GmbH Zweigniederlassung Zorge, 3421 Zorge DEVICE FOR CLOSING A HOLE
JPS61207712A (en) * 1985-03-12 1986-09-16 N I T:Kk Method and device of improving ground
DE3821768C1 (en) * 1986-12-30 1989-10-05 Gkn Keller Gmbh, 6050 Offenbach, De Method of producing statically defined bearing or supporting bodies in otherwise non-load-bearing soils
DE3806407C2 (en) * 1988-02-29 1995-08-31 Keller Grundbau Gmbh Device for producing floor sections compacted by the addition of binding or sealing agents
JPH079088B2 (en) * 1989-01-27 1995-02-01 鹿島建設株式会社 Large diameter ground improvement method
US5228809A (en) * 1989-01-27 1993-07-20 Kajima Corporation Consolidating agent injecting apparatus and injecting apparatus for improving ground
DE8906126U1 (en) * 1989-05-18 1990-04-19 Bergwerksverband Gmbh, 4300 Essen, De
JPH07111053B2 (en) * 1991-03-20 1995-11-29 栄興産業株式会社 Injection stirring method and injection stirring device
JP2968407B2 (en) * 1992-09-24 1999-10-25 株式会社エヌ、アイ、テイ Ground improvement body construction method and equipment
DE19731223C2 (en) 1997-07-21 2001-04-26 Keller Grundbau Gmbh Method for determining the range of a high-speed erosion method in a subsoil
FR2820780B1 (en) * 2001-02-12 2003-05-02 Cie Du Sol LIQUID PRESSURE INJECTION HEAD FOR DRILLING AN EXCAVATION IN THE SOIL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2933380A1 (en) 2014-04-17 2015-10-21 Bauer Spezialtiefbau GmbH Injection head for a high pressure injection of suspension into a base

Also Published As

Publication number Publication date
ATE344351T1 (en) 2006-11-15
DE50305594D1 (en) 2006-12-14
WO2004020742A1 (en) 2004-03-11
EP1527235A1 (en) 2005-05-04
DE10236257A1 (en) 2004-02-26
AU2003266112A1 (en) 2004-03-19

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