EP3361040B1 - Outil de traitement de sol et procédé de production d'un trou dans le sol - Google Patents

Outil de traitement de sol et procédé de production d'un trou dans le sol Download PDF

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Publication number
EP3361040B1
EP3361040B1 EP17155833.1A EP17155833A EP3361040B1 EP 3361040 B1 EP3361040 B1 EP 3361040B1 EP 17155833 A EP17155833 A EP 17155833A EP 3361040 B1 EP3361040 B1 EP 3361040B1
Authority
EP
European Patent Office
Prior art keywords
mixing
processing tool
central shaft
ground
ground processing
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.)
Active
Application number
EP17155833.1A
Other languages
German (de)
English (en)
Other versions
EP3361040A1 (fr
Inventor
Stefan Michael Finkenzeller
Jürgen Klippenstein
Manfred Schweiger
Thomas Bauer
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.)
Bauer Maschinen GmbH
Original Assignee
Bauer Maschinen 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 Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP17155833.1A priority Critical patent/EP3361040B1/fr
Priority to CA2993084A priority patent/CA2993084C/fr
Priority to US15/885,425 priority patent/US10458184B2/en
Priority to CN201810149406.4A priority patent/CN108425629B/zh
Publication of EP3361040A1 publication Critical patent/EP3361040A1/fr
Application granted granted Critical
Publication of EP3361040B1 publication Critical patent/EP3361040B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling

Definitions

  • the invention relates to a soil working tool, in particular a drilling tool, having a center shaft in which a duct is formed, and at least one mixing blade, which is attached to the center shaft and extends approximately radially outward, according to the preamble of claim 1.
  • the invention further relates to a method for producing a hole in the ground with a soil working tool, wherein soil material is removed with the soil working tool and mixed in the created bore with a liquid to form a suspension, which via at least one opening on the at least one mixing blade via the conduit in the soil working tool is sucked, according to the preamble of claim 10.
  • a generic prior art for example, from the EP 1 045 073 A1 out.
  • a bore is created by means of a cutting device which removes soil material.
  • the processed soil material is conveyed to an upper mixing area, in which the processed soil material is comminuted by mixing blades and mixed with a supplied rinsing liquid.
  • Another drilling tool is out of the EP 2 703 596 A1 known. Through an opening on the central drill stem, a mixed suspension can be sucked off and transported upwards out of the drill hole.
  • the US 2010/1026206 A1 teaches a drill bit which is formed with openings for cooling liquid.
  • the WO 00/50358 teaches a device and a method for creating piles in a ground, wherein a displacement drill is provided with an opening arranged on a bottom for injecting concrete. Furthermore, an apparatus and method for creating annular foundations is disclosed.
  • a double head drilling apparatus and method are known.
  • a support tube and a second rotary drive an internal endless screw is driven.
  • the invention has for its object to provide a tillage tool and a method for creating a hole, with which a particularly good crushing and mixing of the removed soil material are made possible.
  • At least one mixing blade is formed with an inner cavity, that the cavity communicates with the conduit in the center shaft and that at least one opening of the cavity is formed on the mixing blade to an outer side.
  • a basic idea of the invention can be seen in a mixing region, in which the processed soil material is further comminuted by the rotating mixing blades and mixed with a supplied liquid, via at least one opening on at least one mixing blade.
  • the suction does not take place directly at the center shaft but further away from it in the mixing space.
  • This leads to an overall improved comminution and mixing of the removed soil material.
  • the mixing space is better utilized, with a relatively uniform consistency of the suspension produced over large areas of the mixing space is generated.
  • annular peripheral wall which is mounted on the central shaft and annularly surrounds a mixing region, in which the at least one mixing blade is arranged.
  • the annular peripheral wall corresponds approximately to the bore diameter, which is usually slightly smaller.
  • the peripheral wall has an upper deck area, wherein a hood-like mixing bell is formed. This results in a delimitation of the mixing area upwards, so that in the mixing area substantially only the removed soil material and liquid, in particular rinsing liquid, are supplied.
  • the rinsing liquid may be the supporting liquid in the borehole or a special liquid which is introduced via a supply line directly into the mixing area.
  • the annular peripheral wall and the deck area can be fixedly attached to the central shaft his. It is advantageous according to a development of the invention that the annular peripheral wall is rotatably mounted relative to the central shaft. This results in additional shear forces within the mixing area, which leads to an improvement of the mixing and crushing.
  • a further preferred embodiment according to the invention is that a plurality of mixing blades are arranged in the middle shaft.
  • several mixing blades can be provided with the cavity and the openings for sucking off the suspension.
  • in addition to these hollow mixing blades and normal mixing blades are provided without a cavity.
  • the normal mixing blades and the mixing blades provided with the suction holes are distributed around the center shaft.
  • the mixing blades may have a front cutting edge, which is reinforced with closure or cutting plates.
  • a further increase of shear forces in the suspension to be mixed results according to a development of the invention in that at least one mixing element is arranged on an inner side of the annular peripheral wall.
  • a plurality of mixing elements are arranged, which are preferably formed as radially projecting sheets.
  • a connection device for a line connection of a suction device is provided at an upper region of the central shaft.
  • one or more drill pipes can be connected, which preferably extend into a region outside the borehole. From there, the discharged suspension can be further removed via a rotary connection via a hose device. It is such a particularly environmentally friendly removal of removed soil material possible, especially in cohesive soils.
  • the tillage tool can be used as a pure mixing or comminution component.
  • a preferred embodiment of the invention consists in that a removal device for removing soil material is arranged on a lower side.
  • the removal device has erosion teeth for removing the soil material.
  • the teeth are basically detachably mounted in corresponding tooth mounts.
  • a conveying device for conveying the removed soil material is arranged between the removal device and the at least one mixing element.
  • the conveyor may have a single or more conveyor coils.
  • the removed from the ablation and still relatively coarse soil material is conveyed upwards in the mixing and crushing area.
  • the rotating mixing elements which are preferably provided with a front cutting edge, the soil material is crushed in a desired manner.
  • a rinsing or supporting liquid is introduced directly or indirectly into the mixing chamber, wherein the liquid is mixed by the rotating mixing blades with the crushed soil material to form a suspension. This can then preferably be sucked off continuously via the openings in the at least one mixing blade.
  • the invention relates to a drill for soil and rock drilling, which is characterized in that a tillage tool is provided, as described above.
  • the drill may be arranged with an undercarriage for drilling on land or on a watercraft, such as a pontoon or a drillship.
  • a suction device is provided with which removed soil material can be sucked into the center shaft via the at least one opening in the mixing blade through the conduit into the central shaft.
  • the suction device may be a pump, which is arranged on the drill outside the borehole.
  • the invention relates to a method for producing a hole in the soil with the soil working tool described above, wherein soil material is removed with the soil working tool and mixed in the created bore with a liquid to form a suspension, which via at least one opening on the at least one mixing blade on the Cable channel in the center is sucked off.
  • a preferred process variant of the invention is that the suspension is discharged from the bore.
  • hard rock material or boulders can be processed within a drill pipe or foundation pipe, crushed and discharged from the borehole as a suspension. This is particularly advantageous in offshore applications, such as the introduction of foundation pipes for wind turbines or turbines.
  • An inventive tillage tool 10 has a tubular center shaft 12, at the lower end of a centering tip 76 is arranged. From the centering tip 76 helically extends a removal device 70 along the center shaft 12 upwards. Flat teeth 72 with cutting edges are arranged on an outer edge of a drill spiral, which merges into a conveyor 80 for the removal of the removed soil material upwards. By the conveyor 80, the removed soil material is conveyed into a mixing area in a central area of the central shaft 12. In this mixing area, radially projecting flat mixing blades 20 and a single box-shaped mixing blade 30 are disposed on the center shaft 12.
  • the box-shaped mixing blade 30 has an approximately cuboid hollow suction box 32. On its upper side five circular openings 34 are arranged for sucking suspension from the mixing area. At a forward in the direction of rotation front of the box-shaped mixing blade 30, a swept front portion 36 with attached wear plates 38 is arranged.
  • the inner cavity of the suction box 32 of the box-shaped mixing blade 30 is connected via an unillustrated aperture in the central shaft 12 to a central duct 14 formed in the tubular central shaft 12.
  • a connection device 60 is arranged, with which the center shaft 12 can be connected to further drill pipes with line connection.
  • axially directed keyway 62 is attached to the outside of the top of the center shaft. This engages positively in a corresponding keyway on an inner side of the attached drill pipe. In this way, a torque from a rotary drive of a drilling apparatus, not shown, can be transmitted to the soil working tool 10.
  • the soil material removed by the removal device 70 is mixed in the middle mixing region of the soil cultivation tool 10 with liquid supplied to form a suspension.
  • the radially projecting mixing blades 20, 30 serve not only for mixing, but also for further comminution of the removed soil material, so that this reliable with the liquid through the openings 34 by means of a, generated by a pump, not shown, negative pressure can be sucked off.
  • cutting plates 22 made of hard metal are welded to the sword-shaped flat mixing blades 20 on the narrow front sides.
  • a recess 24 and a support plate 26 are arranged on each sword-shaped mixing blade 20, thereby an improved Verwirbelungs- and thus mixing effect is generated.
  • the mixing hood 40 has a cylindrical, drum-shaped peripheral wall 42, which is open at the bottom and closed with an upper plate-shaped cover portion 44 upwards.
  • an axially directed bearing sleeve 46 connects, which is connected via stiffening plates 48 fixed to the deck area 44.
  • the mixing hood 40 is mounted relatively rotatably via a sliding sleeve 49 on the central shaft 12.
  • web-shaped mixing elements 50 are arranged, which lead to an increase of the shear forces in the mixing area.
  • the edges of the mixing surfaces can be provided with punctiform wear elements.
  • FIGS. 4 and 5 Another inventive tillage tool 10, which is also designed as a drilling tool is in the FIGS. 4 and 5 shown.
  • the bell-shaped mixing hood 40 is omitted, which is formed as in the previous embodiment.
  • This second embodiment of a soil cultivation tool 10 according to the invention is similar to the previously described soil cultivation tool according to FIGS FIGS. 1 to 3 formed, but as a removal device 70 instead of the flat teeth 72 drill bit 74 are arranged with punctiform Abtragsbeat.
  • the drill bits 74 are disposed in corresponding drill bit mounts along the free edge of the helical conveyor 80, the diameter of which gradually widens upwardly from the centering tip 76 to the maximum outside diameter.
  • the centering tip 76 is in this embodiment according to the FIGS.
  • FIG. 4 and 5 also formed with drill bits 74. Especially vivid is in the presentation according to Fig. 5 the box-shaped mixing element 30 with the cuboid suction box 32 shown. At the top are the openings 34 arranged for sucking the suspension formed from the liquid and the comminuted soil material.
  • a particularly compact inventive soil cultivation tool 10 is in the FIGS. 6 and 7 shown, wherein also the bell-like mixing hood 40 is omitted for reasons of clarity.
  • the soil working tool 10 according to the FIGS. 6 and 7 differs from the previous tillage tools in that the removal device 70 is formed for removing the soil material substantially as a radially extending cutting edge.
  • the cutting edge is formed by a plurality of circumferentially projecting flat teeth 72.
  • the adjoining surface is designed as a short spiral segment for forming a conveyor 80.
  • For centering is a centering tip 76 according to the first embodiment of the FIGS. 1 to 3 arranged.
  • All variants of the soil working tool 10 according to the invention can be used on a conventional drilling rig with an undercarriage, an uppercarriage and a mast with a drill drive arranged thereon, and in particular with flydrill systems and onshore and offshore drilling rigs.
  • the soil working tool is connected to the lower end of a drill pipe, which can be rotationally driven by the drive and axially moved up and down.
  • the removed soil material is mixed via a feed opening, not shown here, with a liquid in the mixing area below the mixing hood 40 through the rotating mixing blades 20, 30.
  • the removed soil material is further comminuted, so that the suspension thus produced can be suctioned off via the openings 34 in the box-shaped mixing blade 30 and discharged upwards from the borehole via the conduit 14.
  • the outer diameter of the mixing hood 40 substantially corresponds to the bore diameter of the bore, which is produced by the removal device 70.
  • the annular cover region 44 of the mixing hood 40 separates the mixing region from the overlying bore region.
  • the bore can be filled with a support liquid or a support suspension.
  • the drilling tool After drilling the borehole and discharging the so-removed soil material, the drilling tool can be withdrawn from the borehole.
  • the support liquid can be recovered and at the same time the wellbore be filled with a curable suspension. This can harden to a bored pile in the ground.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Earth Drilling (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (11)

  1. Outil de traitement de sol avec une tige médiane (12), dans laquelle un canal de conduite est réalisé, et au moins une lame de mélange (20, 30) qui est montée au niveau de la tige médiane (12) et s'étend à peu près radialement vers l'extérieur, dans lequel au moins une lame de mélange (30) est réalisée avec une cavité intérieure, dans lequel la cavité est en liaison avec le canal de conduite (14) dans la tige médiane (12),
    dans lequel au moins une ouverture (34) de la cavité vers un côté extérieur est réalisée au niveau de la lame de mélange (30), et
    un dispositif d'enlèvement (70) pour l'enlèvement d'un matériau de sol est disposé au niveau d'un côté inférieur,
    caractérisé en ce que
    une paroi périphérique annulaire (42) est logée au niveau de la tige médiane (12), laquelle entoure de manière annulaire une zone de mélange dans laquelle l'au moins une lame de mélange (20, 30) est disposée, et
    en ce qu'un dispositif de transport (80) pour le transport du matériau de sol enlevé dans la zone de mélange formée par la paroi périphérique annulaire (42) est disposé entre le dispositif d'enlèvement (70) et l'au moins une lame de mélange (20, 30).
  2. Outil de traitement de sol selon la revendication 1,
    caractérisé en ce que
    la paroi périphérique (42) présente une zone de couverture supérieure (44), dans lequel une cloche de mélange de type capot (40) est formée.
  3. Outil de traitement de sol selon la revendication 1 ou 2,
    caractérisé en ce que
    la paroi périphérique annulaire (42) est logée de manière à pouvoir tourner par rapport à la tige médiane (12).
  4. Outil de traitement de sol selon l'une des revendications 1 à 3,
    caractérisé en ce que
    plusieurs lames de mélange (20, 30) sont disposées au niveau de la tige médiane (12).
  5. Outil de traitement de sol selon l'une des revendications 1 à 4,
    caractérisé en ce que
    au moins un élément de mélange (30) est monté au niveau d'un côté intérieur de la paroi périphérique annulaire (42).
  6. Outil de traitement de sol selon l'une des revendications 1 à 5,
    caractérisé en ce que
    un dispositif de raccordement (60) pour un raccord de conduite d'un dispositif d'aspiration est prévu au niveau d'une zone supérieure de la tige médiane (12).
  7. Outil de traitement de sol selon la revendication 1,
    caractérisé en ce que
    des éléments de mélange en forme de traverse (50) sont disposés au niveau de la paroi périphérique annulaire (42).
  8. Appareil de forage pour le forage de terre et de roche,
    caractérisé en ce que
    un outil de traitement de sol (10) selon l'une quelconque des revendications 1 à 7 est prévu.
  9. Appareil de forage selon la revendication 8,
    caractérisé en ce que
    un dispositif d'aspiration est prévu, avec lequel un matériau de sol enlevé peut être aspiré par le biais de l'au moins une ouverture (34) dans la lame de mélange (30) par le canal de conduite (14) dans la tige médiane (12).
  10. Procédé de fabrication d'un forage dans le sol avec un outil de traitement de sol (10) selon l'une des revendications 1 à 7,
    selon lequel un matériau de sol est enlevé avec l'outil de traitement de sol (10) et est mélangé dans le forage établi avec un liquide pour former une suspension qui est aspirée par le biais d'au moins une ouverture (34) au niveau de l'au moins une lame de mélange (30) par le biais du canal de conduite (14) dans la tige médiane (12).
  11. Procédé selon la revendication 10,
    caractérisé en ce que
    la suspension est évacuée du forage.
EP17155833.1A 2017-02-13 2017-02-13 Outil de traitement de sol et procédé de production d'un trou dans le sol Active EP3361040B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP17155833.1A EP3361040B1 (fr) 2017-02-13 2017-02-13 Outil de traitement de sol et procédé de production d'un trou dans le sol
CA2993084A CA2993084C (fr) 2017-02-13 2018-01-26 Outil de travail du sol et procede pour creer un puits de forage dans le sol
US15/885,425 US10458184B2 (en) 2017-02-13 2018-01-31 Ground processing tool and a method for creating a borehole in the ground
CN201810149406.4A CN108425629B (zh) 2017-02-13 2018-02-13 地面处理工具和用于在地面中形成钻孔的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17155833.1A EP3361040B1 (fr) 2017-02-13 2017-02-13 Outil de traitement de sol et procédé de production d'un trou dans le sol

Publications (2)

Publication Number Publication Date
EP3361040A1 EP3361040A1 (fr) 2018-08-15
EP3361040B1 true EP3361040B1 (fr) 2019-11-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17155833.1A Active EP3361040B1 (fr) 2017-02-13 2017-02-13 Outil de traitement de sol et procédé de production d'un trou dans le sol

Country Status (4)

Country Link
US (1) US10458184B2 (fr)
EP (1) EP3361040B1 (fr)
CN (1) CN108425629B (fr)
CA (1) CA2993084C (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019120019A1 (de) * 2019-07-24 2021-01-28 Herrenknecht Ag Bohrkopf für das Erstellen einer Bohrung im Boden

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1045073A1 (fr) * 1999-04-15 2000-10-18 TREVI S.p.A. Outil d'excavation et procédé de fabrication d'une colonne en sol consolidée
EP1600560A1 (fr) * 2004-05-28 2005-11-30 Smet F & C Procede et disposotif pour réaliser un pieu de fondation

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US3508622A (en) * 1968-05-13 1970-04-28 Pengo Corp Adjustable boring head for earth augers
JPS60164509A (ja) * 1984-02-02 1985-08-27 Kobe Steel Ltd 粉体噴射撹拌地盤改良方法及び装置
CN85101802A (zh) * 1985-04-01 1987-01-10 株式会社神户制钢所 土壤稳定化的方法与器械
US5135058A (en) * 1990-04-26 1992-08-04 Millgard Environmental Corporation Crane-mounted drill and method for in-situ treatment of contaminated soil
JP2002537216A (ja) * 1999-02-25 2002-11-05 メナール・ソルトレイトマン 弾性物質を含むコンクリートとそのコンクリートで作られたパイル
US8869919B2 (en) * 2007-09-06 2014-10-28 Smith International, Inc. Drag bit with utility blades
US20100276206A1 (en) * 2008-07-25 2010-11-04 Anatoli Borissov Rotary Drill Bit
EP2487320B1 (fr) * 2011-02-11 2013-10-09 BAUER Maschinen GmbH Tarière
EP2703596B1 (fr) 2012-08-31 2015-02-18 BAUER Maschinen GmbH Dispositif de forage et procédé d'établissement d'un forage
EP2876246B1 (fr) * 2013-11-21 2019-05-01 BAUER Maschinen GmbH Tarière pour le forage terrestre
CN105041216B (zh) * 2015-08-19 2017-05-03 上海中联重科桩工机械有限公司 可安装护筒的旋挖钻机

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1045073A1 (fr) * 1999-04-15 2000-10-18 TREVI S.p.A. Outil d'excavation et procédé de fabrication d'une colonne en sol consolidée
EP1600560A1 (fr) * 2004-05-28 2005-11-30 Smet F & C Procede et disposotif pour réaliser un pieu de fondation

Also Published As

Publication number Publication date
CN108425629A (zh) 2018-08-21
CA2993084C (fr) 2020-03-31
CN108425629B (zh) 2021-02-09
CA2993084A1 (fr) 2018-08-13
US20180230748A1 (en) 2018-08-16
EP3361040A1 (fr) 2018-08-15
US10458184B2 (en) 2019-10-29

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