EP1069245A1 - Process of improving ground by means of lime columns - Google Patents
Process of improving ground by means of lime columns Download PDFInfo
- Publication number
- EP1069245A1 EP1069245A1 EP00114684A EP00114684A EP1069245A1 EP 1069245 A1 EP1069245 A1 EP 1069245A1 EP 00114684 A EP00114684 A EP 00114684A EP 00114684 A EP00114684 A EP 00114684A EP 1069245 A1 EP1069245 A1 EP 1069245A1
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- European Patent Office
- Prior art keywords
- tube
- pipe
- casing
- ground
- dry
- 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.)
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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 a method for soil improvement by means of Introducing a dry binder over a previously in the lowering tube, which is a cylindrical jacket tube, one in this longitudinal inner tube and one on has flap located at the lower end of the casing tube.
- a device for performing this procedure is a device for performing this procedure.
- the present invention is based on the object To provide methods of soil improvement with which both Fills as well as grown soil formations sustainable can be improved.
- the solution is a process in the following sequence of steps: the lowering tube is with closed flap vertically to a predetermined depth driven into the ground, this becomes the inside of the casing tube dry binders supplied, while air from the emerges from the lower end of the casing tube via the inner tube filling the casing pipe to a partial height with dry
- the lowering tube becomes a binder when the flap opens further tracking of dry binder from the soil drawn, with a column of dry binder in the ground arises.
- the casing tube is filled in particular up to half its height before it is pulled. The air can are sucked out of the jacket tube via the inner tube, as long as the binder is in a fluidized, strong air-enriched state.
- the device according to the invention comprises a countersunk pipe from a cylindrical jacket tube, one in this longitudinal Inner tube and one at the lower end of the jacket tube arranged flap, in which the casing tube at its upper End with a device for conveying the dry binder and the inner tube with its lower end freely in the jacket tube ends and with its upper end out of the casing tube emerges and is connected to the environment.
- the inner tube can especially with a suction fan for extracting air be connected to the casing tube.
- a compressed air generator can also be used or a blower to promote the dry binder provided with compressed air as a carrier medium in the jacket tube his.
- the outer diameter of the casing tube corresponds to essential the final diameter of the individual column of in particular 100 to 200 mm.
- the bringing in The dry binder can be used with a suitable pump or with a blower, in which compressed air is then used as the carrier medium acts, take place.
- the compressed air can also be pulsed here become.
- the compressed air is to be released via the inner tube or, where appropriate, to compress the dry binder be sucked off, the sucking in of binders themselves should be avoided to a significant extent.
- the casing tube at least up to a partial height, for example half filled, it is slowly pulled up out of the ground, whereby the flap opens automatically or is opened under positive control and the dry binder as a column is relatively low Diameter remains in the ground. After that, the device opens move another grid point of the grid and the Process repeated. It is particularly advantageous if as dry binder lime and / or cement is used.
- the effect of the lowering tube has several aspects, namely that Displacing the floor to form a cavity when pressed in of the sink pipe, then the entry of lime or cement into the cavity with simultaneous provisional piping of the cavity in the floor and finally the formation of the column made of binder in the ground when pulling the counterbore.
- the lowering tube can be pulled continuously or in steps done at a predetermined speed, the Speed of pulling the speed of the if applicable adapted continued tracking of binder must become.
- the lowering tube is usually on the leader of a caterpillar attached, the guide carriage provided with driving agents are.
- the machine operator of the crawler vehicle can adjust the inclination of the Leader, the depth of driving and the volume flow of added Monitor and control lime or cement.
- a counterbore 11 according to the invention is shown in a vertical, user-friendly position.
- This comprises a cylindrical jacket tube 12 and an inner tube 13 of smaller diameter running longitudinally therein, which is open at the bottom and ends freely at a smaller distance from the end of the jacket tube 12.
- Means for holding the inner tube 13 in the casing tube 12 are not shown here for simplicity.
- the lowering tube 11 has a head piece 14 at the upper end, which serves to engage a driving device. Below the head piece 14, the casing tube 12 has a first lateral connection 15, through which dry binder is blown into the casing tube.
- the inner tube 13 has at the upper end below the head piece 14 a bend 16 which passes through the wall of the jacket tube and from which displaced air can escape from the jacket tube 12, or air can be sucked out of the inner tube 13 and thus from the jacket tube 12, as indicated by symbols.
- the casing tube has a flap 17, which can close the casing tube when it is driven into the ground, while it can open automatically when the sink pipe is pulled out of the ground, so that a flow of the dry binder, which is indicated by an arrow 18 , can emerge from the casing tube.
- the outer diameter of the casing tube is marked with d m .
- FIG. 2 a perspective view of a portion of a floor surface is symbolized, on which a lattice grid 21 is shown, the crossing points of which are spaced apart from one another in two directions perpendicular to one another by the same unit distance a.
- Completed columns 22 are visible on part of the grid points, two of which are shown in vertical section; these have column diameters d s .
- FIG 3 is a vertical section through an upper layer of soil shown.
- a caterpillar vehicle stands on the ground surface 31 32 on. This has a vertically positioned leader 33 with a slide 34.
- a lowering tube 11 is on the slide 34 attached, which has already been described previously.
- To the caterpillar leads a hose line 35 that to the upper End of the counterbore 11 leads.
- Another arrow indicates the general direction of work progress of the crawler vehicle indicated.
- FIG 3c is the next phase of column manufacture shown shortly before graduation.
- the lowering tube 11 is as through indicated an arrow, largely pulled out of the ground.
- At open flap at the lower end of the plunger is due to flowing out of the dry binder another column 22 almost completed.
- Figure 4 are the device units for supplying the line 35 shown. Specifically, there is a silo 41 for dry binder shown, from which via a screw conveyor 42 Drive motor 43 binder in a hopper 44 one Dosing pump 45 is abandoned. At the metering pump 45 is a Compressed air compressor 46 connected, the compressed air as a carrier medium generated for the binder, which is then via the line 35 is promoted to the lowering tube.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Agronomy & Crop Science (AREA)
- Civil Engineering (AREA)
- Soil Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Fertilizers (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Bodenverbesserung mittels Einbringens eines trockenen Bindemittels über ein zuvor in den Boden abgesenktes Senkrohr, das ein zylindrisches Mantelrohr, ein in diesem längsverlaufendes Innenrohr und eine am unteren Ende des Mantelrohres liegende Klappe aufweist. Weiterhin betrifft die Erfindung eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for soil improvement by means of Introducing a dry binder over a previously in the lowering tube, which is a cylindrical jacket tube, one in this longitudinal inner tube and one on has flap located at the lower end of the casing tube. Farther The invention relates to a device for performing this procedure.
Es sind verschiedene Verfahren zur Bodenverbesserung bekannt, bei denen die Bindemittel aus in den Boden eingetriebenen Injizierrohren in verschiedenen Tiefen in den Boden injiziert werden. Es sind weiterhin Verfahren zur Herstellung von Ortbetonpfählen bekannt, bei denen ein mit einer geschlossenen untenliegenden Klappe leer in den Boden eingetriebenes Senkrohr mit Beton verfüllt und anschließend unter Erzeugen des Ortbetonpfahles mit geöffneter Klappe gezogen wird. Hierzu kann auf die CH-PS 538 573 und auf die DE 41 37 541 A1 verwiesen werden.Various methods of soil improvement are known where the binders are made from injection pipes driven into the ground be injected into the soil at different depths. There are also processes for the production of In-situ concrete piles known in which one with a closed the lower flap, the lowering tube is driven into the ground filled with concrete and then creating the in-situ concrete pile is pulled with the flap open. You can do this on the CH-PS 538 573 and refer to DE 41 37 541 A1.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, ein Verfahren zur Bodenverbesserung bereitzustellen, mit denen sowohl Anschüttungen als auch gewachsene Bodenformationen nachhaltig verbessert werden können. Die Lösung besteht in einem Verfahren in der folgenden Schrittfolge: das Senkrohr wird mit geschlossener Klappe bis auf eine vorbestimmte Tiefe senkrecht in den Boden eingetrieben, dem Inneren des Mantelrohres wird das trockene Bindemittel zugeführt, während gleichzeitig Luft vom unteren Ende des Mantelrohres über das Innenrohr austritt, nach dem Füllen des Mantelrohres bis zu einer Teilhöhe mit trockenem Bindemittel wird das Senkrohr bei sich öffnender Klappe unter weiterem Nachführen von trockenem Bindemittel aus dem Boden gezogen, wobei eine Säule aus trockenem Bindemittel im Boden entsteht. Das Füllen des Mantelrohrs erfolgt insbesondere bis zu seiner halben Höhe, bevor es gezogen wird. Die Luft kann währenddessen über das Innenrohr aus dem Mantelrohr abgesaugt werden, solange sich das Bindemittel in einem fluidisierten, stark mit Luft angereicherten Zustand befindet.The present invention is based on the object To provide methods of soil improvement with which both Fills as well as grown soil formations sustainable can be improved. The solution is a process in the following sequence of steps: the lowering tube is with closed flap vertically to a predetermined depth driven into the ground, this becomes the inside of the casing tube dry binders supplied, while air from the emerges from the lower end of the casing tube via the inner tube filling the casing pipe to a partial height with dry The lowering tube becomes a binder when the flap opens further tracking of dry binder from the soil drawn, with a column of dry binder in the ground arises. The casing tube is filled in particular up to half its height before it is pulled. The air can are sucked out of the jacket tube via the inner tube, as long as the binder is in a fluidized, strong air-enriched state.
Die erfindungsgemäße Vorrichtung umfaßt ein Senkrohr, bestehend aus einem zylindrischen Mantelrohr, einem in diesem längsverlaufenden Innenrohr und einer am unteren Ende des Mantelrohres angeordneten Klappe, bei dem das Mantelrohr an seinem oberen Ende mit einer Vorrichtung zur Förderung des trockenen Bindemittels und das Innenrohr mit seinem unteren Ende frei im Mantelrohr endet und mit seinem oberen Ende aus dem Mantelrohr austritt und mit der Umgebung verbunden ist. Das Innenrohr kann insbesondere mit einem Sauggebläse zur Absaugung von Luft aus dem Mantelrohr verbunden sein. Ebenfalls kann ein Drucklufterzeuger oder ein Gebläse zur Förderung des trockenen Bindemittels mit Druckluft als Trägermedium in das Mantelrohr vorgesehen sein.The device according to the invention comprises a countersunk pipe from a cylindrical jacket tube, one in this longitudinal Inner tube and one at the lower end of the jacket tube arranged flap, in which the casing tube at its upper End with a device for conveying the dry binder and the inner tube with its lower end freely in the jacket tube ends and with its upper end out of the casing tube emerges and is connected to the environment. The inner tube can especially with a suction fan for extracting air be connected to the casing tube. A compressed air generator can also be used or a blower to promote the dry binder provided with compressed air as a carrier medium in the jacket tube his.
Bei der Anwendung des erfindungsgemäßen Verfahrens ist insbesondere vorgesehen, daß vorab ein Gitterraster mit einem Rastermaß von insbesondere 15 bis 100 cm auf der Bodenoberfläche markiert wird, in dem jeder Rasterpunkt die Position einer Säule bestimmt. Der äußere Durchmesser des Mantelrohres entspricht im wesentlichen dem Enddurchmesser der einzelnen Säule von insbesondere 100 bis 200 mm. Nachdem vorab ein Gitterraster auf die Bodenoberfläche aufgetragen worden ist, werden an jedem Rasterpunkt die folgenden Verfahrungshandlungen vorgenommen. Das Senkrohr mit der geschlossenen Klappe wird mittels bekannter Handhabungsgeräte in den Boden eingedrückt, eingerüttelt oder eingeschlagen, bis sein unteres Ende die erforderliche Tiefe erreicht hat, wobei das obere Ende noch über die Bodenoberfläche hinausragt. Nach Erreichen der Endtiefe wird trockenes Bindemittel in das Mantelrohr eingeleitet, wobei über das Innenrohr gleichzeitig Luft entweichen kann bzw. abgesaugt wird. Das Einbringen des trockenen Bindemittels kann mit einer geeigneten Pumpe oder mit einem Gebläse, in dem Druckluft dann als Trägermedium wirkt, erfolgen. Die Druckluft kann hier dabei auch gepulst werden. Über das Innenrohr soll die Druckluft entspannt werden bzw. gegebenenfalls zur Verdichtung des trockenen Bindemittels abgesaugt werden, wobei das Mitansaugen von Bindemitteln selber in nennenswertem Umfang vermieden werden soll. Ist das Mantelrohr zumindest bis zu einer Teilhöhe, beispielsweise zur Hälfte gefüllt, wird es langsam nach oben aus dem Boden gezogen, wobei sich die Klappe selbstätig öffnet oder zwangsgesteuert geöffnet wird und das trockene Bindemittel als Säule relativ geringen Durchmessers im Boden verbleibt. Danach wird die Vorrichtung auf einen anderen Rasterpunkt des Gitternetzes verfahren und der Vorgang wiederholt. Dabei ist es besonders vorteilhaft, wenn als trockenes Bindemittel Kalk und/oder Zement verwendet wird.When using the method according to the invention is particularly provided that in advance a grid with a grid dimension marked in particular from 15 to 100 cm on the floor surface where each grid point determines the position of a column. The outer diameter of the casing tube corresponds to essential the final diameter of the individual column of in particular 100 to 200 mm. After a grid on the Soil surface has been applied to each grid point the following procedural acts. The sinker with the closed flap using known handling devices pressed into the ground, shaken or hammered in, until its lower end reaches the required depth has, with the upper end still protruding from the floor surface. After reaching the final depth, dry binder is in the jacket tube is introduced, with the inner tube simultaneously Air can escape or is extracted. The bringing in The dry binder can be used with a suitable pump or with a blower, in which compressed air is then used as the carrier medium acts, take place. The compressed air can also be pulsed here become. The compressed air is to be released via the inner tube or, where appropriate, to compress the dry binder be sucked off, the sucking in of binders themselves should be avoided to a significant extent. Is the casing tube at least up to a partial height, for example half filled, it is slowly pulled up out of the ground, whereby the flap opens automatically or is opened under positive control and the dry binder as a column is relatively low Diameter remains in the ground. After that, the device opens move another grid point of the grid and the Process repeated. It is particularly advantageous if as dry binder lime and / or cement is used.
Die Wirkungsweise der Säulen aus Kalk und/oder Zement, d.h. von Säulen aus trockenen hydraulischen Bindemitteln, besteht im Falle des ungelöschten Kalkes CaO
- auf einer Reaktion der Hydratation (Bildung von Ca (HO2)), die sehr exotherm sein kann und sich in einer Verminderung des Wassergehaltes des Bodens auswirkt;
- einer Veränderung der geotechnischen Eigenschaften des Bodens durch Anlagerung von Ca-Ionen und Ausflockung von Tonpartikeln, die sich in einer Erhöhung des Scherwiderstandes und einer Verminderung der Kompressibilität auswirken;
- einer Veränderung der Struktur des Tons durch die Bildung von Aluminaten und Silikaten von Kalciumhydraten.
- a reaction of hydration (formation of Ca (HO2)), which can be very exothermic and results in a reduction in the water content of the soil;
- a change in the geotechnical properties of the soil due to the accumulation of Ca ions and flocculation of clay particles, which result in an increase in shear resistance and a decrease in compressibility;
- a change in the structure of the clay due to the formation of aluminates and silicates of calcium hydrates.
Im Falle der Verwendung von Zement sind die Wirkungen geringer ausgeprägt, dagegen ist hier die Reaktion bei Anwesenheit von Wasser sehr viel schneller. Zur Vereinigung beider Wirkungen kann mit Mischungen aus Kalk und Zement gearbeitet werden.If cement is used, the effects are less pronounced, but here is the reaction in the presence of Water much faster. To combine both effects can be worked with mixtures of lime and cement.
Die Wirkung des Senkrohres hat mehrere Aspekte, nämlich das Verdrängen des Bodens zur Bildung eines Hohlraums beim Eindrücken des Senkrohres, dann den Eintrag des Kalkes oder Zementes in den Hohlraum bei gleichzeitiger provisorischer Verrohrung des Hohlraumes im Boden und schließlich die Formung der Säule aus Bindemittel im Boden beim Ziehen des Senkrohres.The effect of the lowering tube has several aspects, namely that Displacing the floor to form a cavity when pressed in of the sink pipe, then the entry of lime or cement into the cavity with simultaneous provisional piping of the cavity in the floor and finally the formation of the column made of binder in the ground when pulling the counterbore.
Das Ziehen des Senkrohres kann kontinuierlich oder in Schritten mit einer vorbestimmten Geschwindigkeit erfolgen, wobei die Geschwindigkeit des Ziehens der Geschwindigkeit des gegebenenfalls noch fortdauernden Nachführens von Bindemittel angepaßt werden muß.The lowering tube can be pulled continuously or in steps done at a predetermined speed, the Speed of pulling the speed of the if applicable adapted continued tracking of binder must become.
Das Senkrohr wird üblicherweise am Mäkler eines Raupenfahrzeugs angehängt, dessen Führungsschlitten mit Eintreibmitteln versehen sind.The lowering tube is usually on the leader of a caterpillar attached, the guide carriage provided with driving agents are.
Der Maschinenführer des Raupenfahrzeuges kann die Neigung des Mäklers, die Tiefe des Eintreibens und den Mengenstrom an zugegebenem Kalk bzw. Zement überwachen und steuern.The machine operator of the crawler vehicle can adjust the inclination of the Leader, the depth of driving and the volume flow of added Monitor and control lime or cement.
Die Erfindung wird nachstehend anhand der beigefügten Zeichnungen näher erläutert.
- Fig. 1
- zeigt ein erfindungsgemäßes Senkrohr im Vertikalschnitt;
- Fig. 2
- zeigt eine erste Phase des erfindungsgemäßen Verfahrens;
- Fig. 3
- zeigt
- a) eine zweite Phase,
- b) eine dritte Phase,
- c) eine vierte Phase
des erfindungsgemäßen Verfahrens jeweils mit einem Raupenfahrzeug mit Mäkler; - Fig. 4
- zeigt Anlagenteile der erfindungsgemäßen Vorrichtung.
- Fig. 1
- shows a countersunk pipe according to the invention in vertical section;
- Fig. 2
- shows a first phase of the method according to the invention;
- Fig. 3
- shows
- a) a second phase,
- b) a third phase,
- c) a fourth phase
of the method according to the invention each with a caterpillar with leader; - Fig. 4
- shows plant parts of the device according to the invention.
In Figur 1 ist ein erfindungsgemäßes Senkrohr 11 in vertikaler,
benutzungsgerechter Lage gezeigt. Dieses umfaßt ein zylindrisches
Mantelrohr 12 und ein darin längsverlaufendes Innenrohr 13
von geringerem Durchmesser, das unten offen ist und in geringerem
Abstand von dem Ende des Mantelrohres 12 frei endet. Mittel
zur Halterung des Innenrohres 13 im Mantelrohr 12 sind hier
zur Vereinfachung nicht dargestellt. Das Senkrohr 11 hat am
oberen Ende ein Kopfstück 14, das zum Angriff einer Eintreibvorrichtung
dient. Unterhalb des Kopfstückes 14 hat das Mantelrohr
12 einen ersten seitlichen Stutzen 15, durch den trockenes Bindemittel
in das Mantelrohr eingeblasen wird. Das Innenrohr 13
hat am oberen Ende unterhalb des Kopfstückes 14 einen Krümmer
16, der durch die Wandung des Mantelrohres hindurchtritt und aus
dem verdrängte Luft aus dem Mantelrohr 12 entweichen kann, oder
Luft aus dem Innenrohr 13 und damit aus dem Mantelrohr 12 abgesaugt
werden kann, wie durch Symbole angedeutet. Am unteren Ende
hat das Mantelrohr eine Klappe 17, die das Mantelrohr beim Eintreiben
in den Boden verschließen kann, während sie beim Ziehen
des Senkrohres aus dem Boden sich selbstständig öffnen kann, so
daß ein Strom vom trockenem Bindemittel, der durch einen Pfeil
18 angedeutet ist, aus dem Mantelrohr austreten kann. Der Außendurchmesser
des Mantelrohres ist mit dm gekennzeichnet. In Figure 1, a counterbore 11 according to the invention is shown in a vertical, user-friendly position. This comprises a
In Figur 2 ist in perspektivischer Ansicht eine Bodenoberfläche
ausschnittsweise symbolisiert, auf der ein Gitterraster 21 gezeigt
ist, dessen Kreuzungspunkte in zwei zueinander senkrechten
Richtungen um den gleichen Einheitsabstand a voneinander entfernt
sind. Auf einem Teil der Rasterpunkte sind bereits fertiggestellte
Säulen 22 sichtbar, von denen zwei in Vertikalschnitt
dargestellt sind; diese haben Säulendurchmesser ds.In FIG. 2, a perspective view of a portion of a floor surface is symbolized, on which a lattice grid 21 is shown, the crossing points of which are spaced apart from one another in two directions perpendicular to one another by the same unit distance a. Completed
In Figur 3 ist ein Vertikalschnitt durch eine obere Bodenschicht
dargestellt. Auf der Bodenoberfläche 31 steht ein Raupenfahrzeug
32 auf. Dieses besitzt einen vertikal aufgestellten Mäkler 33
mit einem Schlitten 34. Am Schlitten 34 ist ein Senkrohr 11
befestigt, das bereits vorher beschrieben worden ist. Zum Raupenfahrzeug
führt eine Schlauchleitung 35, die bis zum oberen
Ende des Senkrohres 11 führt.In Figure 3 is a vertical section through an upper layer of soil
shown. A caterpillar vehicle stands on the
In Figur 3a sind fünf fertig ausgeführte Säulen 22 erkennbar.
Zur Bildung einer weiteren Säule wird das Senkrohr gerade im
Rasterabstand eingedrückt bzw. eingerammt, wie durch einen Vertikalpfeil
dargestellt ist.In Figure 3a, five completed
Mit einem weiteren Pfeil ist die allgemeine Arbeitsfortschrittsrichtung des Raupenfahrzeugs angedeutet.Another arrow indicates the general direction of work progress of the crawler vehicle indicated.
In Figur 3b ist das Senkrohr 11 bis auf die Tiefe eingedrückt
oder eingeschlagen, in der die fertigen Säulen 22 enden. In
dieser Position beginnt die nächste Arbeitsphase,indem über die
Leitung 35 nunmehr trockenes Bindemittel in das Senkrohr eingeblasen
wird, während Luft gleichzeitig am oberen Ende austreten
kann.In Figure 3b, the countersunk tube 11 is pressed to the bottom
or struck, in which the
In Figur 3c ist die nächste Phase der Herstellung einer Säule
kurz vor ihrem Abschluß gezeigt. Das Senkrohr 11 ist wie durch
einen Pfeil angedeutet, weitgehend aus dem Boden gezogen. Bei
geöffneter Klappe am unteren Ende des Senkrobres ist durch Ausfließen
des trockenen Bindemittels eine weitere Säule 22 nahezu
fertiggestellt.In Figure 3c is the next phase of column manufacture
shown shortly before graduation. The lowering tube 11 is as through
indicated an arrow, largely pulled out of the ground. At
open flap at the lower end of the plunger is due to flowing out
of the dry binder another
In Figur 4 sind die Geräteeinheiten zur Versorgung der Leitung
35 dargestellt. Im einzelnen ist ein Silo 41 für trockenes Bindemittel
gezeigt, aus dem über einen Schneckenförderer 42 mit
Antriebsmotor 43 Bindemittel in einen Aufgabetrichter 44 einer
Dosierpumpe 45 aufgegeben wird. An die Dosierpumpe 45 ist ein
Druckluftkompressor 46 angeschlossen, der Druckluft als Trägermedium
für das Bindemittel erzeugt, das dann über die Leitung
35 zum Senkrohr gefördert wird.In Figure 4 are the device units for supplying the
Claims (12)
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9909376 | 1999-07-16 | ||
FR9909376A FR2796405B1 (en) | 1999-07-16 | 1999-07-16 | PROCESS FOR IMPROVING SOILS USING LIME COLUMNS |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1069245A1 true EP1069245A1 (en) | 2001-01-17 |
EP1069245B1 EP1069245B1 (en) | 2003-12-17 |
Family
ID=9548289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00114684A Expired - Lifetime EP1069245B1 (en) | 1999-07-16 | 2000-07-08 | Process of improving ground by means of lime columns |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1069245B1 (en) |
AT (1) | ATE256791T1 (en) |
DE (1) | DE50004768D1 (en) |
ES (1) | ES2213524T3 (en) |
FR (1) | FR2796405B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1457188A1 (en) * | 2003-03-12 | 2004-09-15 | KELLER GRUNDBAU GmbH | Method for accelerating the decomposition of corpses |
DE10310727A1 (en) * | 2003-03-12 | 2004-10-07 | Bauer Spezialtiefbau Gmbh | Feeder tube to supply material for construction of vertical columns has vibrator acting in vertical direction, and curved two-part closure connected to lower tube end via joints |
DE102005001227A1 (en) * | 2005-01-10 | 2006-07-20 | Keller Grundbau Gmbh | Method for improving a foundation in the ground comprises inserting columns having a lower bound section made from mortar or cement and an upper bound section made from ballast |
WO2013001160A1 (en) * | 2011-06-28 | 2013-01-03 | Allu Group Oy | Method for evacuating transfer air from a mixture of pressurized air and binding agent |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63284308A (en) * | 1987-05-18 | 1988-11-21 | Hazama Gumi Ltd | Crushed stone pile and its construction |
DE4125576A1 (en) * | 1991-08-02 | 1993-02-04 | Gerd Prof Dr Ing Gudehus | Pumping dry powder into soil for strengthening - using rigid or flexible hose to introduce chalk-based powder into soil as hose is withdrawn to both stiffen and dewater soil |
JPH07279153A (en) * | 1994-04-05 | 1995-10-24 | Nakatomi Kurimoto | Ground improving pile forming device |
JPH08311857A (en) * | 1995-05-12 | 1996-11-26 | Hatsuyou Kensetsu Kk | Internal and external foundation reinforcing method for existing building |
EP0903440A2 (en) * | 1997-09-17 | 1999-03-24 | KELLER GRUNDBAU GmbH | Method and device for ground improvement with a powder binder |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4137541C2 (en) | 1991-11-14 | 1999-09-16 | Keller Grundbau Gmbh | Tool for the production of in-situ concrete piles |
-
1999
- 1999-07-16 FR FR9909376A patent/FR2796405B1/en not_active Expired - Fee Related
-
2000
- 2000-07-08 DE DE50004768T patent/DE50004768D1/en not_active Expired - Fee Related
- 2000-07-08 ES ES00114684T patent/ES2213524T3/en not_active Expired - Lifetime
- 2000-07-08 EP EP00114684A patent/EP1069245B1/en not_active Expired - Lifetime
- 2000-07-08 AT AT00114684T patent/ATE256791T1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63284308A (en) * | 1987-05-18 | 1988-11-21 | Hazama Gumi Ltd | Crushed stone pile and its construction |
DE4125576A1 (en) * | 1991-08-02 | 1993-02-04 | Gerd Prof Dr Ing Gudehus | Pumping dry powder into soil for strengthening - using rigid or flexible hose to introduce chalk-based powder into soil as hose is withdrawn to both stiffen and dewater soil |
JPH07279153A (en) * | 1994-04-05 | 1995-10-24 | Nakatomi Kurimoto | Ground improving pile forming device |
JPH08311857A (en) * | 1995-05-12 | 1996-11-26 | Hatsuyou Kensetsu Kk | Internal and external foundation reinforcing method for existing building |
EP0903440A2 (en) * | 1997-09-17 | 1999-03-24 | KELLER GRUNDBAU GmbH | Method and device for ground improvement with a powder binder |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 013, no. 090 (M - 803) 2 March 1989 (1989-03-02) * |
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29) * |
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 03 31 March 1997 (1997-03-31) * |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1457188A1 (en) * | 2003-03-12 | 2004-09-15 | KELLER GRUNDBAU GmbH | Method for accelerating the decomposition of corpses |
DE10310727A1 (en) * | 2003-03-12 | 2004-10-07 | Bauer Spezialtiefbau Gmbh | Feeder tube to supply material for construction of vertical columns has vibrator acting in vertical direction, and curved two-part closure connected to lower tube end via joints |
DE10310727B4 (en) * | 2003-03-12 | 2007-09-13 | Bauer Spezialtiefbau Gmbh | filling pipe |
DE102005001227A1 (en) * | 2005-01-10 | 2006-07-20 | Keller Grundbau Gmbh | Method for improving a foundation in the ground comprises inserting columns having a lower bound section made from mortar or cement and an upper bound section made from ballast |
WO2013001160A1 (en) * | 2011-06-28 | 2013-01-03 | Allu Group Oy | Method for evacuating transfer air from a mixture of pressurized air and binding agent |
EP2726677A4 (en) * | 2011-06-28 | 2015-07-22 | Allu Group Oy | Method for evacuating transfer air from a mixture of pressurized air and binding agent |
US9315964B2 (en) | 2011-06-28 | 2016-04-19 | Allu Group Oy | Method for evacuating transfer air from a mixture of pressurized air and binding agent |
RU2595034C2 (en) * | 2011-06-28 | 2016-08-20 | Аллу Груп Ои | Method of pumping out carrier air from mixture of compressed air and binding agent |
Also Published As
Publication number | Publication date |
---|---|
FR2796405B1 (en) | 2001-09-07 |
EP1069245B1 (en) | 2003-12-17 |
FR2796405A1 (en) | 2001-01-19 |
DE50004768D1 (en) | 2004-01-29 |
ATE256791T1 (en) | 2004-01-15 |
ES2213524T3 (en) | 2004-09-01 |
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