EP1069245A1 - Procédé d'amélioration de sols au moyen de colonnes de chaux - Google Patents

Procédé d'amélioration de sols au moyen de colonnes de chaux Download PDF

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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
Authority
EP
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.)
Granted
Application number
EP00114684A
Other languages
German (de)
English (en)
Other versions
EP1069245B1 (fr
Inventor
Winfried Dipl.-Ing. Seher
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.)
Keller Grundbau GmbH
Original Assignee
Keller Grundbau 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 Keller Grundbau GmbH filed Critical Keller Grundbau GmbH
Publication of EP1069245A1 publication Critical patent/EP1069245A1/fr
Application granted granted Critical
Publication of EP1069245B1 publication Critical patent/EP1069245B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

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.

Landscapes

  • 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)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
EP00114684A 1999-07-16 2000-07-08 Procédé d'amélioration de sols au moyen de colonnes de chaux Expired - Lifetime EP1069245B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9909376 1999-07-16
FR9909376A FR2796405B1 (fr) 1999-07-16 1999-07-16 Procede d'amelioration de sols au moyen de colonnes de chaux

Publications (2)

Publication Number Publication Date
EP1069245A1 true EP1069245A1 (fr) 2001-01-17
EP1069245B1 EP1069245B1 (fr) 2003-12-17

Family

ID=9548289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00114684A Expired - Lifetime EP1069245B1 (fr) 1999-07-16 2000-07-08 Procédé d'amélioration de sols au moyen de colonnes de chaux

Country Status (5)

Country Link
EP (1) EP1069245B1 (fr)
AT (1) ATE256791T1 (fr)
DE (1) DE50004768D1 (fr)
ES (1) ES2213524T3 (fr)
FR (1) FR2796405B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1457188A1 (fr) * 2003-03-12 2004-09-15 KELLER GRUNDBAU GmbH Procédé pour accélérer la décomposition des cadavres
DE10310727A1 (de) * 2003-03-12 2004-10-07 Bauer Spezialtiefbau Gmbh Füllrohr
DE102005001227A1 (de) * 2005-01-10 2006-07-20 Keller Grundbau Gmbh Baugrundverbesserung durch Hybrid- Säulen
WO2013001160A1 (fr) * 2011-06-28 2013-01-03 Allu Group Oy Procédé pour évacuer de l'air de transfert à partir d'un mélange d'air sous pression et d'agent liant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63284308A (ja) * 1987-05-18 1988-11-21 Hazama Gumi Ltd 砕石杭およびその施工方法
DE4125576A1 (de) * 1991-08-02 1993-02-04 Gerd Prof Dr Ing Gudehus Verfahren zum einpressen von pulver in weichem boden
JPH07279153A (ja) * 1994-04-05 1995-10-24 Nakatomi Kurimoto 地盤改良杭造成装置
JPH08311857A (ja) * 1995-05-12 1996-11-26 Hatsuyou Kensetsu Kk 既存建物内外部基礎補強工法
EP0903440A2 (fr) * 1997-09-17 1999-03-24 KELLER GRUNDBAU GmbH Procédé et dispositif pour amélioration des sols avec un liant a poudre

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4137541C2 (de) 1991-11-14 1999-09-16 Keller Grundbau Gmbh Arbeitsgerät zur Herstellung von Ortbetonpfählen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63284308A (ja) * 1987-05-18 1988-11-21 Hazama Gumi Ltd 砕石杭およびその施工方法
DE4125576A1 (de) * 1991-08-02 1993-02-04 Gerd Prof Dr Ing Gudehus Verfahren zum einpressen von pulver in weichem boden
JPH07279153A (ja) * 1994-04-05 1995-10-24 Nakatomi Kurimoto 地盤改良杭造成装置
JPH08311857A (ja) * 1995-05-12 1996-11-26 Hatsuyou Kensetsu Kk 既存建物内外部基礎補強工法
EP0903440A2 (fr) * 1997-09-17 1999-03-24 KELLER GRUNDBAU GmbH Procédé et dispositif pour amélioration des sols avec un liant a poudre

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1457188A1 (fr) * 2003-03-12 2004-09-15 KELLER GRUNDBAU GmbH Procédé pour accélérer la décomposition des cadavres
DE10310727A1 (de) * 2003-03-12 2004-10-07 Bauer Spezialtiefbau Gmbh Füllrohr
DE10310727B4 (de) * 2003-03-12 2007-09-13 Bauer Spezialtiefbau Gmbh Füllrohr
DE102005001227A1 (de) * 2005-01-10 2006-07-20 Keller Grundbau Gmbh Baugrundverbesserung durch Hybrid- Säulen
WO2013001160A1 (fr) * 2011-06-28 2013-01-03 Allu Group Oy Procédé pour évacuer de l'air de transfert à partir d'un mélange d'air sous pression et d'agent liant
EP2726677A4 (fr) * 2011-06-28 2015-07-22 Allu Group Oy Procédé pour évacuer de l'air de transfert à partir d'un mélange d'air sous pression et d'agent liant
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 (ru) * 2011-06-28 2016-08-20 Аллу Груп Ои Способ откачивания воздуха-носителя из смеси сжатого воздуха и связующего агента

Also Published As

Publication number Publication date
DE50004768D1 (de) 2004-01-29
ES2213524T3 (es) 2004-09-01
FR2796405B1 (fr) 2001-09-07
FR2796405A1 (fr) 2001-01-19
EP1069245B1 (fr) 2003-12-17
ATE256791T1 (de) 2004-01-15

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