EP0903440A2 - Procédé et dispositif pour amélioration des sols avec un liant a poudre - Google Patents

Procédé et dispositif pour amélioration des sols avec un liant a poudre Download PDF

Info

Publication number
EP0903440A2
EP0903440A2 EP98117318A EP98117318A EP0903440A2 EP 0903440 A2 EP0903440 A2 EP 0903440A2 EP 98117318 A EP98117318 A EP 98117318A EP 98117318 A EP98117318 A EP 98117318A EP 0903440 A2 EP0903440 A2 EP 0903440A2
Authority
EP
European Patent Office
Prior art keywords
lock tube
feed container
soil
binder
feed
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
EP98117318A
Other languages
German (de)
English (en)
Other versions
EP0903440A3 (fr
EP0903440B1 (fr
Inventor
Joachim Dipl.-Ing. Berg
Johannes Dr. Ing. Köcher
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 EP0903440A2 publication Critical patent/EP0903440A2/fr
Publication of EP0903440A3 publication Critical patent/EP0903440A3/fr
Application granted granted Critical
Publication of EP0903440B1 publication Critical patent/EP0903440B1/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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
    • 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
    • E02D3/02—Improving by compacting
    • E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles

Definitions

  • the invention relates to a method and an apparatus for Introducing powdered binder into the soil, in particular in cohesive soil with a high water content, for the production of set consolidation columns in the ground to improve the Load capacity of the floor.
  • DE 43 04 816 A1 describes a device and a method for Stabilization of soft ground with dry mineral Powder known, in which a within a previously driven Protective tube driven into the underground Pipe is used which has a cone seat valve at the front end having. This is with the powder to be introduced filled pipe driven into the ground with the valve closed and the valve after reaching the lowest position of the pipe opened by means of a rod; after that the powder is during a pulling of the pipe while filling the resulting bottom opening pressed out of the pipe by means of compressed air. The compressed air emerges from the valve and is supposed to flow along the outside Drain the pipe. This can lead to disturbances in the drainage of air, so that there are imperfections in the solidification column can arise.
  • DE 44 17 887 A1 describes a method and an apparatus for Known to increase the strength of soft ground, in which the Appears a screw arrangement within a pipe for conveying out of soil material and for the introduction of powdery binder disposes.
  • Flaws in the consolidation column are not to be expected because the powder by means of the screw while pulling the tube on everyone Case can be squeezed.
  • the device is complicated and subject to wear with regard to the worm drive.
  • the inventive method is characterized in that the pulling of the lock tube when falling below a lower one Minimum level of binder interrupted in the lock tube becomes.
  • the vibrator tube can be completely filled with the same powdery binders are made.
  • This feed bin is usually constantly with a hose line a silo vehicle connected via a compressed air delivery device and from which the refill operations take place.
  • the lock tube is shaken into the ground using known technology. Even when pulling the lock tube to deploy the Binder can be used to solidify the improved soil be shaken.
  • the powdery binder can be beneficial to the cohesive soil Wise withdraw water so that the load capacity of the cohesive soil significantly improved. It also takes place a material displacement by introducing the powdery binder in the ground instead, which is used for solidification and thus for leads to further improvement of the load capacity. Ground consolidation and displacement simultaneously causes squeezing of the soil water, so that the binding agent with the soil water can set and forms a solidified column body.
  • the shaking of the lock tube and the introduction of the binder under the floor surface after shaking under Pulling the lock tube can create a consolidation column with a larger diameter than the lock tube can be repeated several times.
  • the process is repeated in a known manner at intervals, so that a grid of consolidation columns in the building ground, the Load capacity to be improved arises.
  • a device comprises a feed container for powdery binder with one feed opening and one Vent opening, a lock tube, which is located at the bottom Feed container connects, with an outlet opening at the bottom End, and a jogger near the bottom of the Lock tube, which is within the cross section of the lock tube lies, and at least one level sensor near the lower end of the lock tube.
  • the device comprises each have a further level sensor close to the upper one End of the lock pipe and in the feed container.
  • the device is preferably on a leader who is on a caterpillar is mounted, attached.
  • the powdery material is before Shake the lock tube filled into this. The weight of the material supports the shaking of the lock tube.
  • the level sensors according to the invention ensure that the pulling is stopped and the Closing device in the event of an uncontrolled complete Emptying the lock tube or in the event of defects in the fill level, which can arise from bridging. As soon as the level sensor at the lower end of the lock tube the deflated condition, d. H. Falling below the fill level under the sensor, indicates the pulling of the device interrupted by no incorrect fillings in the emerging To create a column of material in the ground.
  • the lock tube below the closing device with a plug made of gravel or the like to provide by the device first in a gravel fill is lowered on the ground surface. This is dispensable if the closing device is immediate is provided at the end of the lock tube.
  • the vibrator is advantageously located on lower end of the lock tube within its cross section; the free flow cross section of the lock tube for powdery Material is reduced in this area.
  • the lock tube can be attached elastically to the feed container be so that the feed container from the vibrations of the Lock tube is decoupled when shaking. An unwanted one Compression in the material feed container can thus be ruled out become.
  • the locking device at the lower end of the lock tube is preferably directly at a distance from the outlet opening above the vibrator.
  • the locking device of the lock tube can be in the form of a Slider, a flap or a pneumatic pinch valve device be trained.
  • a Slider a flap or a pneumatic pinch valve device be trained.
  • the multiple refills of the lock tube from the feed container then allows if there is no permanent connection to the silo vehicle can stay.
  • the entire device is preferably via a guide carriage Can be moved on a leader that is directly on the feed container attacks.
  • FIG. 1 A tracked vehicle is shown in FIG. 1 with thin lines 11 with a vertically erected leader device attached to it 12 recognizable.
  • the caterpillar 11 is on the Floor surface 13 on.
  • On the leader device 12 hangs in substantially vertically aligned a device 21 for insertion of powdery material under the floor surface for Manufacture of essentially vertical columns.
  • On the device 21 are a feed container 22, a lock tube 23 and a vibrator device 24 recognizable as essential components.
  • the feed container 22 is in two parts Carriage 25 performed on leader 12. At the bottom of the sled 25 the lock tube 23 is also suspended elastically.
  • the Feed container 22 has a feed nozzle 26 which runs tangentially into the feed container 22 and at the one Hose connection from a silo vehicle is connectable.
  • the feed container 22 On the feed container 22 is a sheet metal hood with a dust filter 27 put on.
  • the feed container 22 ends in one at the bottom Funnel 28 which ends in a straight nozzle 29. This is via an elastic connector 30 with an expanded Inlet area 31 of the lock tube 23 connected.
  • At the bottom At the end of the lock tube its internal cross section is reduced by installing the vibrator 24.
  • a sealing plug 32 At the entrance to the A region with a reduced cross section is a sealing plug 32 in the closed position and shown in thin lines in the open Position shown.
  • the lock tube 23 runs in one Cone section 33 with an outlet opening 34. In cross section is the round cross section of the feed container on the side 22 and the oval cross section of the lock tube 23 shown.
  • a first level sensor 39 in the feed container 22 which is "completely filled” for the feed container can indicate a second level sensor 40 at the top of the lock tube 23, which is the condition “completely filled” for the lock tube 23 or “completely emptied “for the feed container 22 can display, and a third fill level sensor 41 at the lower end of the lock tube, which has the "completely emptied” state for the lock tube 23 should display.
  • FIG 2 is a portion of the lock tube 23 with the shown the upper end of the vibrating device 24. Installation in Lock tube forms a transition funnel 35.
  • the plug 32 with conical seat is here in the closed position solid lines and in open position in dashed lines Lines as seen in Figure 1.
  • An actuation mechanism is not shown in detail. For this is a vertical operating rod with a corresponding outside or inside of the lock cylinder lying suitable.
  • FIG. 3 again shows a section of the lock tube 23 the upper part of the vibrating device 24 can be seen.
  • Above the vibrating device has a swivel flap mechanism 36, that in solid lines in the open position and in dashed lines Lines are shown in the closed position.
  • As an actuator can be done in the same way as previously described a vertical operating rod and one outside or inside of the lock cylinder lying serving serve.
  • FIG. 4 also shows a section of the lock tube 22 and the upper part of the vibrating device 24 can still be seen a sheet metal installation that forms a support surface 37.
  • On the Support surface builds an elastic airbag 38 which with the Wall parts forms a pneumatically actuated pinch valve. There is a compressed air line along the lock tube for actuation to provide.
  • Closing devices of those shown in Figures 2 to 4 and the type described here can also in the transition cone 28th of the feed container 22 may be installed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Paleontology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Agronomy & Crop Science (AREA)
  • Soil Sciences (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fertilizing (AREA)
EP98117318A 1997-09-17 1998-09-12 Procédé et dispositif pour amélioration des sols avec un liant a poudre Expired - Lifetime EP0903440B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29716673U 1997-09-17
DE29716673U DE29716673U1 (de) 1997-09-17 1997-09-17 Vorrichtung zur Bodenverbesserung mittels pulvrigem Bindemittel

Publications (3)

Publication Number Publication Date
EP0903440A2 true EP0903440A2 (fr) 1999-03-24
EP0903440A3 EP0903440A3 (fr) 1999-11-17
EP0903440B1 EP0903440B1 (fr) 2002-05-22

Family

ID=8046100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98117318A Expired - Lifetime EP0903440B1 (fr) 1997-09-17 1998-09-12 Procédé et dispositif pour amélioration des sols avec un liant a poudre

Country Status (3)

Country Link
EP (1) EP0903440B1 (fr)
AT (1) ATE217930T1 (fr)
DE (2) DE29716673U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1069245A1 (fr) * 1999-07-16 2001-01-17 KELLER GRUNDBAU GmbH Procédé d'amélioration de sols au moyen de colonnes de chaux
EP4603641A1 (fr) * 2024-02-14 2025-08-20 BAUER Maschinen GmbH Dispositif pour la fabrication d'une colonne de matériau dans le sol et procédé pour charger le dispositif

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10310727B4 (de) * 2003-03-12 2007-09-13 Bauer Spezialtiefbau Gmbh Füllrohr
FI123541B (fi) * 2011-06-28 2013-06-28 Allu Group Oy Menetelmä sideaineen siirtoilman poistamiseksi paineilman ja sideaineen seoksesta stabiloitaessa maamassoja sideainelisäyksen avulla

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4304816A1 (de) 1993-02-17 1994-08-18 Gerd Prof Dr Ing Gudehus Gerät und Verfahren zur Stabilisierung und Erkundung weichen Untergrundes
DE4417887A1 (de) 1994-05-21 1995-11-23 Gerd Prof Dr Ing Gudehus Schonende Stabilisierung weichen Untergrunds mit Schnecke, Rohr und Pulver

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2633509A (en) * 1951-11-10 1953-03-31 Ernest E Fields Material level control means for feed hoppers
DE1039441B (de) * 1957-04-08 1958-09-18 Eirich Gustav Dosiergeraet zur volumetrischen Abmessung von koernigem Schuettgut
JPS4949055B2 (fr) * 1971-09-18 1974-12-25
DE7517180U (de) * 1975-05-30 1976-07-29 Stade, Heinrich, 2240 Heide Vorrichtung zur herstellung von kalkpfaehlen in zu stabilisierenden schluff- und tonboeden o.dgl.
US4229122A (en) * 1978-10-10 1980-10-21 Toole Energy Company, Inc. Hole filling and sealing method and apparatus
DE4137003A1 (de) * 1991-08-02 1993-05-13 Boesinger Eugen Vorrichtung zum einpressen von pulver in boden oder schlamm
DE4125576A1 (de) * 1991-08-02 1993-02-04 Gerd Prof Dr Ing Gudehus Verfahren zum einpressen von pulver in weichem boden
DE19509054C2 (de) * 1995-03-14 1998-01-29 Coplan Ing Gmbh Vorrichtung zur Herstellung von Stabilisierungspfählen in bindigen Böden mit ungenügender Tragfähigkeit
DE19509053A1 (de) * 1995-03-14 1996-09-26 Coplan Ing Gmbh Verfahren zur Stabilisierung von bindigen Böden mit ungenügender Tragfähigkeit
JP2882770B2 (ja) * 1996-03-04 1999-04-12 中富 栗本 軟弱地盤の改良工法
DE29611427U1 (de) * 1996-07-01 1996-09-05 Josef Möbius Bau-Gesellschaft (GmbH & Co.), 22549 Hamburg Rohrförmiger Verdrängungskörper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4304816A1 (de) 1993-02-17 1994-08-18 Gerd Prof Dr Ing Gudehus Gerät und Verfahren zur Stabilisierung und Erkundung weichen Untergrundes
DE4417887A1 (de) 1994-05-21 1995-11-23 Gerd Prof Dr Ing Gudehus Schonende Stabilisierung weichen Untergrunds mit Schnecke, Rohr und Pulver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1069245A1 (fr) * 1999-07-16 2001-01-17 KELLER GRUNDBAU GmbH Procédé d'amélioration de sols au moyen de colonnes de chaux
FR2796405A1 (fr) * 1999-07-16 2001-01-19 Keller Grundbau Gmbh Procede d'amelioration de sols au moyen de colonnes de chaux
EP4603641A1 (fr) * 2024-02-14 2025-08-20 BAUER Maschinen GmbH Dispositif pour la fabrication d'une colonne de matériau dans le sol et procédé pour charger le dispositif

Also Published As

Publication number Publication date
DE59804183D1 (de) 2002-06-27
DE29716673U1 (de) 1998-01-02
EP0903440A3 (fr) 1999-11-17
EP0903440B1 (fr) 2002-05-22
ATE217930T1 (de) 2002-06-15

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