EP1400633B1 - Tête de forage - Google Patents

Tête de forage Download PDF

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Publication number
EP1400633B1
EP1400633B1 EP03450210A EP03450210A EP1400633B1 EP 1400633 B1 EP1400633 B1 EP 1400633B1 EP 03450210 A EP03450210 A EP 03450210A EP 03450210 A EP03450210 A EP 03450210A EP 1400633 B1 EP1400633 B1 EP 1400633B1
Authority
EP
European Patent Office
Prior art keywords
soil
drill head
mixing
head according
drilling tool
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
EP03450210A
Other languages
German (de)
English (en)
Other versions
EP1400633A3 (fr
EP1400633A2 (fr
Inventor
Heinz Aufricht
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.)
Sigma Consult GmbH
Original Assignee
Sigma Consult 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 Sigma Consult GmbH filed Critical Sigma Consult GmbH
Priority to AT03450210T priority Critical patent/ATE415523T1/de
Priority to EP08016408A priority patent/EP2003251B1/fr
Publication of EP1400633A2 publication Critical patent/EP1400633A2/fr
Publication of EP1400633A3 publication Critical patent/EP1400633A3/fr
Application granted granted Critical
Publication of EP1400633B1 publication Critical patent/EP1400633B1/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
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • 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
    • E02D3/126—Consolidating by placing solidifying or pore-filling substances in the soil and mixing by rotating blades

Definitions

  • the invention relates to a drill head for forming a support or solidification area in the ground with at least one drilling tool, and at least one element for introducing Bodenverfest Trentssubstanz in the soil, wherein the drill head comprises a device for mixing the introduced soil hardening substance with the boring tool during the drilling process and
  • the invention relates to a device for conveying the removed and / or dissolved soil material and the introduced soil compaction substance in the axial direction of the drill head to the mixing device, and wherein the device for conveying through at least one along a peripheral portion of the drill head extending sub-screw is arranged, which is arranged between the drilling tool and the device for mixing
  • the resulting soil conditioner substance is relatively high, while the resulting excavated material, which is partially mixed with cement suspension, set aside and must be disposed of according to the chemical composition of the binder in special waste landfills.
  • Bohrkopf has become known for forming a support and solidification area in the ground, are attached to the cutting and Brecharme, while the drill shank itself hollow and attached at its lower end an opening for the discharge of cement, which upon rotation of the drilling device with the broken soil is mixed.
  • Non-rotatably connected to the drill shank shear blades are arranged in the longitudinal direction of the drill shaft between cutting blades and crushing teeth. In this way, the shear blades are decoupled from the rotary motion of the drill shaft, but are dragged during the drilling process due to the friction between them and the soil and mix it in this way with the cement.
  • the soil is displaced during the drilling process and filled the resulting cavity with cement suspension. Soil consolidation by mixing with soil material does not come about.
  • the drill head has a frusto-conical shaft, along which a helical blade assembly is mounted, with which the drill head is screwed into the ground.
  • hydraulically pivotable arms are provided, which form by displacement a cavity in the bottom, which is filled with cement, which is introduced via nozzles in the body of the drill head.
  • From the GB 2 198 765 A shows a drilling tool with a longitudinal, continuous screw surface, which has interruptions.
  • the soil stabilization mixture entering at the free end is mixed with the soil material via the screw surface, wherein the direction of rotation of the drilling tool is alternately reversed in order to obtain a thorough mixing.
  • Rotary mixing elements without conveying effect are not provided in this drilling tool.
  • the object of the invention is therefore to provide a drill head of the type mentioned, which allows solidification of the soil in only one operation, the resulting excavation amount should be kept as low as possible or even avoided. Another object of the invention is to achieve the most homogeneous possible mixing of broken soil and soil compaction substance introduced in order to guarantee a desired load capacity of the solidified soil can. Another object of the invention is also to provide a drill head with which solidification can be carried out even in difficult ground conditions.
  • the at least one partial screw has at least one opening through which parts of the soil material without being conveyed longitudinally can slide through and a mixing action is exercised.
  • a rotation of the drill head thus has a longitudinal promotion and thus also necessarily an intensive mixing of the soil material with the solidification substance result.
  • the broken up by the drilling tool soil material is mixed on the one hand in situ with the soil hardening substance, whereby the soil material does not have to be managed from the drilling hole and a collapse of the hole can not come about, on the other hand, it comes during the drilling process to a compelling movement of the soil material in the axial direction, whereby it is driven together with the soil hardening substance to the device for mixing, which is provided on the drill head.
  • the result of this combination of longitudinal conveying and radial mixing is a homogeneously consolidated soil that ensures high compressibility.
  • a further embodiment of the invention can consist in that the device for mixing the soil hardening substance with the removed soil material is formed by at least one soil mixing extension. With rotating operation of the drill head is thus for a constant mixing of Soil hardening substance and soil material taken care of.
  • An embodiment of the invention in which both a rotation and a simple supply of soil compaction substance is given may consist in that the drill head has a hollow cylindrical base body whose central axis forms an axis of rotation, and the drilling tool at one end of the base body and arranged around the Rotation axis is rotatable.
  • the supply of soil compaction substance can be done via the interior of the hollow cylindrical body.
  • a rotary drilling operation allows a gentle soil consolidation, which is especially in the inner city area and in the vicinity of vibration sensitive structures of advantage.
  • an embodiment of the invention may consist in that the at least one bottom mixing extension is connected to the hollow cylindrical basic body and projects radially outward from the same. A rotation of the body thus automatically results in a thorough mixing of the broken up material around this.
  • the respective two bottom mixing extensions can be spaced in the longitudinal direction of the main body, whereby a mixing process promoting the division of the soil mixing processes over the main body length can be achieved.
  • connection- and - cutting devices may be provided which allow expansion of a diameter caused by the drill core diameter to a nominal diameter.
  • the ground breaking and cutting devices may be formed by a plurality of peripherally distributed cutting edges.
  • a variant of the invention may consist in that the cutting edges are arranged on a conical end region of the base body, which adjoins the drilling tool, whereby a significant widening of the borehole is possible.
  • a further embodiment of the invention may consist in that the at least one partial screw at its one, the drilling tool facing end has at least two parallel arranged obliquely to the central axis of the body employed chisel elements, with the aid of the expansion of the well can be performed more quickly.
  • a structurally simple variant of the invention may consist in that the at least one element for introducing Bodenverfest Trentssubstanz by a provided in the lateral surface of the body, variable in the opening cross-section injection nozzle for ejecting cement suspension is formed, and that the interior of the body about a high pressure pump is connected to a suspension reservoir.
  • cement suspension no additional substances such as air and / or water and / or bentonite are introduced into the soil to be improved, which helps to prevent a soil-worsening reaction.
  • a plurality of injection nozzles can be provided with variable opening cross-section, which are arranged in the region of Bodenbrech- and cutting devices on the base body, so that a sufficient Amount of cement slurry for mixing with the soil material can be provided.
  • Fig.1 shows a drill head 10 for forming a support or solidification area in the ground, which is connected via a drill pipe connector 20 with a drill string, not shown, via which a drive torque can be transmitted.
  • the drill head 10 has a hollow cylindrical base body 19, the central axis of which forms a rotation axis 11 around which it is rotatable.
  • a drilling tool 1 is mounted, for example, in the in Fig. 3 may be formed, wherein at the end of a shaft of this projecting cutting edges are fixed, via which the bottom can be broken in a Kernloch malmesser.
  • the invention is not limited to a particular shape of the drilling tool, as well as mounted on the drill head 10 Bodenbrech- and cutting devices 5, 15 in one of Fig.1 and 3 deviating way can be executed.
  • the Bodenbrech- and cutting devices have a plurality of circumferentially distributed cutting 5, which are arranged on a cone-shaped end portion of the base body 19 which is adjacent to the drilling tool 1. These cutting edges 5 continue to widen the opening broken open by the drilling tool 1.
  • the drill head further comprises a device 6, 7, 8 for mixing the pressurized soil hardening substance with the soil material removed and / or dissolved by the drilling tool 1 during the drilling process.
  • a device 6, 7, 8 for mixing the pressurized soil hardening substance with the soil material removed and / or dissolved by the drilling tool 1 during the drilling process. This will be the bottom in the broken soil opening in situ mixed with the cement slurry, which results in a hardening of the soil after curing of the mixture.
  • the ground area thus solidified can perform a supporting function. All broken soil material remains in the drill hole.
  • a device for conveying the removed and / or dissolved soil material and the introduced soil compaction substance in the axial direction of the drill head to the device for mixing 6, 7, 8 is provided on the drill head 10, wherein the device for conveying in the embodiment shown by two along a peripheral portion of the main body 19 extending part screws 17 is formed, each having at its one, the drilling tool 1 near end three parallel, obliquely to the central axis of the body 19 employed chisel elements 15, which make the expansion of the drill head 10 to the nominal diameter, so that during the drilling process between the lateral surface of the hollow cylindrical base body 19 and the borehole wall, an annular space with broken soil material is formed.
  • the number and positioning of the chisel elements 15 used is of no importance to the invention and can be varied as desired.
  • the length of the peripheral portion, along which the partial screws 17 extend is not greater than half of the Bohrkopf practices. Since an upward movement of the broken soil material to take place, but the material should not be displaced from the well, the two sub-screws 17 are each provided with an opening 12 through which the soil material can slide.
  • the apertures 12 may vary in size but may also be omitted.
  • soil hardening substance To form support or solidification areas in the soil this is broken and then introduced into the broken soil opening soil hardening substance.
  • soil material formed in the broken bottom opening with soil compaction substance in the axial direction of the bore and mixed, and allowed to cure the forming mixture.
  • soil hardening substance a cement suspension is usually introduced into the broken bottom opening, any other suitable substance can also be used for it.
  • elements for ejecting the cement suspension injection nozzles 2, 3, 4 are formed with a variable opening cross section in the lateral surface of the base body 19, wherein the interior of the body 19 is connected via a high-pressure pump, not shown, with a suspension reservoir.
  • the injection nozzles 2, 3, 4 are preferably arranged in the region of the ground breaking and cutting devices 5, 15, 17 in the base body 19 and their number or their diameter is dimensioned so that a sufficient amount of cement suspension in during the drilling process for Available time is supplied to the excavated soil material.
  • the device for mixing the cement suspension is formed by bottom mixing extensions 6, 7, 8, which are arranged along the longitudinal axis of the base body 19 and make a rotation of the base body 19 about its longitudinal axis, a mixing of cement suspension and the broken soil material.
  • the two sub-screws 17 exert in addition to their conveying effect on their openings 12 and a mixing action. Number and shape of the sub-worms may vary.
  • two of the ground mixing extensions 6, 7, 8 connected to the base body 19 project radially outwardly in opposite directions at opposite circumferential points of the base body 19, the two bottom mixing extensions 6, 7, 8 being spaced apart from one another in the longitudinal direction of the base body 19.
  • the connecting lines of the two bottom mixing extensions 6, 7 are opposite the base circumference by an angle, preferably by 90 °, opposite the two soil mixes 8 added.
  • the number and the longitudinal and circumferential displacement of the soil mixing processes can be adapted according to the properties of the soil material to be mixed.
  • At the free end of the soil mixing extensions attached transverse end pieces 18 to the bottom mixing extensions 7, 8 serve the improved leadership of the drill head 10 within the bore.
  • the drilling head mounted on a drill string according to the invention is brought into the drill start position by means of a suitable drill.
  • the interior of the hollow cylindrical body 19 is applied via the drill pipe, which is connected to the high-pressure pump, with the cement suspension in the composition corresponding to the respective soil either immediately before, simultaneously with or immediately after the start of drilling.
  • the propulsion of the drill head must not be done by rotation. It is also the hole opening can be created by a high-pressure cement slurry jet, the same time by appropriate arrangement of the cement injection nozzles mixing the case thereby dissolved from the ground Material causes the cement suspension and thus the solidification of the substrate.
  • Fig.2 shows a section of a support structure for excavation protection with two embedded in the ground, adjacent beams 40, 41, which are representative of any extension of the carrier structure and which are connected to each other via a infill, which acts on the Victoriaverbau, lateral ground pressure to the carrier 40, 41 forwards.
  • the supports 40, 41 are received in first, preferably columnar, bottom mounting bodies 30, 31 and the infill is formed by two second unobstructed, preferably columnar, bottom mounting bodies 35 respectively placed between the two adjacent first floor mounting bodies 30, 31 into which the beams 40, 41 are included.
  • the number of first bottom fastening bodies 35 set between the two first floor fastening bodies 30, 31 may vary within the scope of the invention.
  • the cross sections of the first floor fixing bodies 30, 31 and the second floor fixing bodies 35 immediately adjacent thereto and the cross sections of adjacent second floor fixing bodies 35 are each partially overlapping, and the cross sectional centers 38 of the second floor fixing bodies 35 opposite to the connecting line 36 between the cross sectional centers of the first floor fixing bodies 30, 31 so arranged staggered that each set between the two first floor mounting body 30, 31 second floor mounting body 35 form a horizontal vault to accommodate the lateral bottom pressure can.
  • the first and second floor fastening bodies 30, 31, 35 are each formed by a floor fastening body produced by the method according to the invention.
  • a vault is created, which resists the side-acting pressure of the soil.
  • supports 40, 41 are placed in the ground and it is between them formed a infill by along the course of the trainees carrier assembly, preferably columnar, mounting body 30, 31, 35 along the longitudinal abutting be set in the ground, wherein the cross sections of each adjacent attachment body are formed overlapping each other. This is preferably done by the fastening body 30, 31, 35 are placed against each other in the uncured state so that overlapping cross sections of each adjacent attachment body 30, 31, 35 form.
  • each subsequent in the series mounting body can be formed so that it partially overlaps with the cross section of the previous mounting body in which the drill head used for it is lowered so that it in the already completed cross-section of the preceding Locking body engages. After curing, the cross sections are overlapping.
  • the carriers 40, 41 are spaced from each other in a predetermined pitch in the mounting body 30, 31 is introduced, wherein the pitch corresponds to a multiple of the distance between the cross-sectional centers of the fastening body 30, 31, 35, in Fig.2 the pitch is, for example, three times the center distance, and wherein those fastening body 35, between each two fastening bodies 30, 31 are placed, in which the carrier 40, 41 are introduced, are set in an arcuate course, so that they form a horizontal vault to accommodate the lateral bottom pressure can.

Claims (13)

  1. Tête de forage pour la formation d'une zone de support et de solidification dans le sol, avec au moins un outil de forage (1) et au moins un élément (2, 3, 4) pour introduire une substance pour la solidification du sol dans le sol, ladite tête de forage (10) comportant un dispositif pour mélanger (6, 7, 8) la substance introduite pour la solidification du sol avec la matière du sol ablatée et/ou enlevée par ledit outil de forage (1) au cours du processus de forage, un dispositif pour le transport (17) de la matière du sol ablatée et/ou enlevée et de la substance introduite pour la solidification du sol dans une direction axiale vers ledit dispositif de mélange (6, 7, 8) étant prévu à ladite tête de forage (10), et ledit dispositif de transport étant formé par au moins une vis partielle (17) s'étendant le long d'un tronçon circonférentiel de ladite tête de forage (10) et étant disposée entre ledit outil de forage (1) et ledit dispositif de mélange (6, 7, 8), caractérisée en ce que ladite au moins une vis partielle (17) a au moins un orifice a travers (12) duquel des fragments de la matière du sol peuvent glisser sans être transportés dans un sens longitudinal et un effet de mélange peut être obtenu, et que la longueur du tronçon circonférentiel, au long duquel la vis partielle s'étend, n'est pas plus large qu'une moitié de la circonférence de la tête de forage.
  2. Tête de forage selon la revendication 1, caractérisée en ce que la longueur du tronçon circonférentiel, au long duquel la vis partielle (17) s'étend, n'est pas plus large qu'une moitié de la circonférence de la tête de forage.
  3. Tête de forage selon la revendication 1 ou 2, caractérisée en ce que ledit dispositif pour mélanger la substance pour la solidification du sol avec la matière ablatée est formé par une extension de mélange du sol (6, 7, 8).
  4. Tête de forage selon la revendication 1 ou 2, caractérisée en ce que ladite tête de forage (10) a un corps (19) en forme d'un cylindre creux dont l'axe central représente un axe de révolution, que ledit outil de forage (1) est disposé à un bout du corps et peut être tourné autour dudit axe de révolution, et que ladite au moins une extension de mélange du sol (6, 7, 8) est reliée audit corps cylindrique creux (19) et saillit de ceci d'une manière radiale vers l'extérieur.
  5. Tête de forage selon la revendication 4, caractérisée en ce que deux extensions de mélange du sol (6, 7, 8) respectives, disposées à deux points circonférentiels opposés du corps (19), saillissent d'une manière radiale vers l'extérieur dans des directions opposées.
  6. Tête de forage selon la revendication 5, caractérisée en ce que lesdites deux extensions de mélange du sol (6, 7, 8) respectives sont écartées l'une de l'autre dans le sens longitudinal du corps (19).
  7. Tête de forage selon la revendication 6, caractérisée en ce que les lignes de jonction des deux extensions de mélange du sol (6, 7, 8) respectives sont décalées l'une de l'autre d'un certain angle, de préférence d'un angle de 90°, le long de la circonférence du corps.
  8. Tête de forage selon l'une des revendications précédentes, caractérisée en ce que, en plus, des dispositifs de cassure et de coupage du sol (5, 15) sont prévus.
  9. Tête de forage selon la revendication 8, caractérisée en ce que lesdits dispositifs de cassure et de coupage du sol sont formés par plusieurs tranchants (5) répartis autour de la circonférence.
  10. Tête de forage selon la revendication 9, caractérisée en ce que lesdits tranchants (5) sont disposés à une section finale conique du corps (19) avoisinante l'outil de forage (1).
  11. Tête de forage selon l'une des revendications précédentes, caractérisée en ce que ladite au moins une vis partielle (17) comporte au moins deux éléments de trépan (15) à son bout adjacent à l'outil de forage (1) qui sont disposés d'une façon parallèle et mises en place d'une façon inclinée vers l'axe central du corps (19).
  12. Tête de forage selon l'une des revendications précédentes, caractérisée en ce que ledit au moins un élément pour l'introduction de la substance pour la solidification du sol est formé par une buse d'injection prévue dans la surface du corps (19), la section transversale de l'ouverture de celle-ci étant modifiable, pour l'éjection d'une suspension de ciment (2, 3, 4), et que l'intérieur du corps (19) est relié à un réservoir pour la suspension via une pompe haute pression.
  13. Tête de forage selon la revendication 12, caractérisée en ce que plusieurs buses d'injection (2, 3, 4) dont la section transversale de l'ouverture est modifiable sont prévues et disposées près des dispositifs de cassure et de coupage du sol (5, 15).
EP03450210A 2002-09-19 2003-09-18 Tête de forage Expired - Lifetime EP1400633B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT03450210T ATE415523T1 (de) 2002-09-19 2003-09-18 Bohrkopf
EP08016408A EP2003251B1 (fr) 2002-09-19 2003-09-18 Avant-corps de support

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0141302A AT414258B (de) 2002-09-19 2002-09-19 Bohrkopf
AT14132002 2002-09-19

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP08016408A Division EP2003251B1 (fr) 2002-09-19 2003-09-18 Avant-corps de support

Publications (3)

Publication Number Publication Date
EP1400633A2 EP1400633A2 (fr) 2004-03-24
EP1400633A3 EP1400633A3 (fr) 2006-05-03
EP1400633B1 true EP1400633B1 (fr) 2008-11-26

Family

ID=31892567

Family Applications (2)

Application Number Title Priority Date Filing Date
EP03450210A Expired - Lifetime EP1400633B1 (fr) 2002-09-19 2003-09-18 Tête de forage
EP08016408A Expired - Lifetime EP2003251B1 (fr) 2002-09-19 2003-09-18 Avant-corps de support

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP08016408A Expired - Lifetime EP2003251B1 (fr) 2002-09-19 2003-09-18 Avant-corps de support

Country Status (3)

Country Link
EP (2) EP1400633B1 (fr)
AT (4) AT414258B (fr)
DE (2) DE50312275D1 (fr)

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NL1032167C2 (nl) * 2006-07-14 2008-01-15 Decombi B V Samenstel voor het in een bodem vervaardigen van een langwerpig constructie-element alsmede een verdringingselement ter gebruike daarbij.
ATE541991T1 (de) * 2007-05-10 2012-02-15 Luc Maria Hugo Corneel Smet Verbesserte bohrvorrichtung
ITTO20080503A1 (it) * 2008-06-27 2009-12-28 Soilmec Spa Dispositivo di consolidamento di terreni mediante miscelazione meccanica ed iniezione di fluidi di consolidamento
EP2278075A1 (fr) * 2009-06-26 2011-01-26 Lime Column Method AB Colonne de stabilisation de sol, dispositif rotatif et procédé de fabrication de cette colonne
EP2743403B1 (fr) * 2012-12-12 2015-03-25 BAUER Maschinen GmbH Dispositif et procédé destinés à l'établissement d'un élément de fondation
ES2563214B1 (es) * 2014-02-28 2016-12-27 Universidad De Granada Pilote con perfil de sección monosimétrica para contención de tierras
DE102017104879A1 (de) 2017-03-08 2018-09-13 Hans Böck Gmbh & Co. Verfahren, Vorrichtung und Verwendung der Vorrichtung zum Verankern eines vertikalen Bauteils in einem Bohrloch
CN112921959B (zh) * 2021-01-29 2023-05-16 中建协和建设有限公司 双轴双向水泥搅拌桩施工设备及水泥搅拌桩施工方法

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US3969902A (en) * 1973-07-23 1976-07-20 Yoshino Ichise Contruction method for continuous row of piles and earth drill for use therefor
JPS6039812B2 (ja) * 1981-09-18 1985-09-07 清水建設株式会社 鋼矢板の施工法
JPS5988532A (ja) * 1982-11-13 1984-05-22 Tomoyoshi Shinohara 地中構造物の構築工法及びその工法に用いる切削軸
JPS59177428A (ja) * 1983-03-29 1984-10-08 Takenaka Komuten Co Ltd 地下躯体作製用型枠施工法
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GB2198765B (en) * 1986-11-18 1990-07-18 Cementation Piling & Found A tool for in-situ subsurface stablisation of soil
JPH02125017A (ja) * 1988-11-02 1990-05-14 Ishizue Kensetsu:Kk 基礎杭の杭打ち工法
EP0436954B1 (fr) * 1990-01-11 1994-10-05 Seiko Kogyo Kabushiki Kaisha Machine de forage et de malaxage à double tube et méthode d'amélioration d'un sol de fondation utilisant ladite machine de forage et de malaxage à double tube
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US5645376A (en) * 1993-09-01 1997-07-08 Taki; Osamu Soil solidification apparatus with a shear blade of adjustable length and rotation speed for creating a ribbed soil-cement pile
US20020071725A1 (en) * 2000-12-07 2002-06-13 Jakiel Robert L. Earth support and permanent structural foundation wall
BE1015173A5 (nl) * 2002-11-06 2004-10-05 Chiaverotti Bvba Werkwijze voor het bouwen van een beschoeiing.

Also Published As

Publication number Publication date
DE50310824D1 (de) 2009-01-08
ATE453019T1 (de) 2010-01-15
EP2003251A1 (fr) 2008-12-17
AT414136B (de) 2006-09-15
AT414258B (de) 2006-10-15
EP2003251B1 (fr) 2009-12-23
ATA14132002A (de) 2006-01-15
ATA4142004A (de) 2005-12-15
DE50312275D1 (de) 2010-02-04
ATE415523T1 (de) 2008-12-15
EP1400633A3 (fr) 2006-05-03
EP1400633A2 (fr) 2004-03-24

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