WO2015022105A1 - Method and device for creating a foundation element in the ground - Google Patents
Method and device for creating a foundation element in the ground Download PDFInfo
- Publication number
- WO2015022105A1 WO2015022105A1 PCT/EP2014/063006 EP2014063006W WO2015022105A1 WO 2015022105 A1 WO2015022105 A1 WO 2015022105A1 EP 2014063006 W EP2014063006 W EP 2014063006W WO 2015022105 A1 WO2015022105 A1 WO 2015022105A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pile tube
- soil material
- borehole
- drilling tool
- pile
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
-
- 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
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
- E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives
Definitions
- the invention relates on the one hand to a method for creating a foundation element in the ground, in particular in a body of water, in which soil material is removed by means of a drilling tool and a borehole is created, into which a pile tube and a hardenable medium are introduced, according to the preamble of claim 1.
- the invention further relates to a device for creating a foundation element in the ground, comprising a drilling device with a drilling tool for removing soil material below the pile tube, which can be introduced as a part of the foundation element in the ground, according to the preamble of claim 10.
- a generic method and a generic device are evident from EP 23 22 724 A1.
- a pile-shaped foundation element is introduced into a body of water.
- a drilling device is mounted, which removes soil below the tubular foundation element and creates a borehole.
- the removed soil material can be pumped out of the tubular foundation element and a settable suspension can be introduced into the tube.
- WO 2010/015799 A2 discloses a method for underwater founding, in which initially a borehole is created. In this a smaller-diameter foundation pipe can be introduced, which is embedded on its inner and outer sides in a curable cement paste. This cement compound then hardens together with the pipe element to the foundation element.
- the excavated soil material is expelled from the borehole into the surrounding water. This can be an environmental impact.
- a large amount of cement paste is required to form the foundation element. The handling of large amounts of cement under water can also lead to an undesirable environmental impact.
- the invention is based on the invention, a method and an apparatus for creating a foundation element in the ground, in particular in a body of water to specify, with which a foundation element with high load capacity can be created efficiently and at the same time as environmentally friendly.
- the inventive method is characterized in that the borehole is created with a bore diameter which is greater than an outer diameter of the pile tube by a predetermined amount, wherein between a borehole wall and an outer side of the pile tube, an annular space is formed, that the removed soil material into an interior space the pile tube is conveyed while the annulus is kept substantially free of excavated soil material, and that the curable medium for anchoring the pile tube in the ground is introduced into the annulus.
- the invention is based on the finding that in order to achieve a high carrying capacity, the foundation element is anchored in the surrounding soil by means of a curable medium, in particular a cement compound.
- a curable medium in particular a cement compound.
- the curable medium is introduced substantially only in the outer annular space, which is formed between the outside of the pile tube and the bore wall of the defined larger borehole.
- a connecting jacket is formed, which anchors the pile tube in the surrounding soil with a high coefficient of friction.
- the consumption of hardenable medium can be significantly reduced, which is both economical and environmentally friendly.
- curable medium can be introduced into the foot region of the pile tube, so that a stable pile base is formed.
- An overlying center region preferably remains free of hardenable medium.
- the soil material removed by the drilling tool need not be completely removed from the borehole. Rather, there is the possibility that at least a portion of the removed soil material remains within the pile tube.
- Under drilling tool in the context of the invention is not only a rotary driven drilling tool, but basically a milling-like drilling tool to understand a high pressure injection-removing drilling tool, a combination of drilling tools or other soil-removing tool.
- a preferred embodiment of the method according to the invention consists in that the removed soil material is mixed with a fluid, in particular water, which is introduced into a lower region of the borehole.
- a fluid in particular water
- this can largely rise without additional conveyor, such as a conveyor coil within the pile tube upwards.
- the fluid may also comprise a curable medium.
- the removed and mixed soil material is at least partially conveyed out of the borehole through the pile tube.
- the soil material may, as far as permitted and environmentally sound, be discharged via a discharge pipe to the surrounding water.
- the removed soil material can also be conveyed ashore or to a hull. It is advantageous that the removed soil material is not contaminated with the curable medium. This allows easy disposal.
- the drilling tool is rotationally driven by means of a drill pipe, which is arranged within the pile tube, and that introduced via the drill pipe fluid in the lower region of the wellbore and / or removed soil material is discharged from the wellbore.
- a hollow drill string can be used, which has one or more outlet openings for supplying a fluid, in particular water, in its lower region.
- the fluid can also be supplied under pressure, so that it contributes to the soil removal and / or mixing of the removed soil material.
- the curable medium is introduced into a lower region of the annular space.
- one or more supply lines can be provided along the pile tube, in particular along the inside of the pile tube. These open into a lower region of the annular space, so that the created annulus can be filled from below with the curable medium, in particular a cement paste.
- the pile tube is formed overall with a lower annular shoulder such that the annular space is sealed from the interior of the pile tube, in which the removed soil material is absorbed. In this way, contamination of the inner removed soil material by the hardenable medium is avoided.
- the curable medium is used sparingly and efficiently to fill the annulus. It should be noted that soil material from the bore wall or to some extent from the bottom of the wellbore can penetrate into the annulus or at least such a penetration can never be completely ruled out. However, the curable medium is supplied in quantitative terms to such an extent that even with penetration of soil material sufficient curing of the anchoring jacket is achieved around the pile tube. The decisive factor is that the curable medium can not penetrate into the interior of the pile tube and thus leads to an undesirable contamination of the removed soil material in the interior of the pile tube.
- a particularly efficient method is inventively achieved in that the introduction of the pile tube, the removal of the soil material, the introduction of the fluid and / or the introduction of the curable medium simultaneously. Overall, such a rapid sinking of the well and a speedy erection of the foundation element can be achieved.
- a drilling device is fixed to the pile tube for removing soil material within the pile tube, which has a drive device for rotationally driving the drilling tool.
- the drill device which can be fixed to the pile tube can, for example, have a support frame which can be fixed to the pile tube by means of clamping or clamping devices, and in which a drive device or a rotary motor for driving a drill pipe is accommodated.
- the drilling device can be defined, for example, within an inner cross section of the pile tube, so that the drilling device and the pile tube can be scooped together. It is also possible to provide a telescoping drill string or to store the drill pipe axially adjustable relative to the support frame, so that an independent axial feed of the drilling tool and the pile tube can be done.
- a particularly economical method variant is achieved according to the invention in that after the anchoring of the pile tube in the soil removed soil material remains within the pile tube.
- the removed soil material is not or not completely removed from the pile tube. Rather, the removed soil material, which may be crushed and optionally mixed with liquid, remains within the pile tube.
- a solidification of this material filling is not necessary, since the carrying capacity of the foundation element depends significantly on the skin friction. It can thus be avoided the costs for the removal of the soil material and any associated environmental impact. Since the soil material does not interact with hardenable medium taminiert, this does not represent a long-term environmental impact, for example, underwater foundation elements.
- a special drilling tool with radially executable erosion teeth can be used to create the larger diameter borehole.
- Such a drilling tool can be folded radially after drilling the borehole and pulled back through the smaller diameter pile tube.
- an economical alternative is that after drilling down the well, the drill pipe is separated from the drilling tool at the lower end of the pile pipe, leaving the drilling tool as a lost drilling tool in the ground. It can be used as a simple rigid drilling tool, which remains as a lost drill bit on the underside of the foundation element in the ground.
- the above object is further achieved by a device which is characterized in that the drilling tool is designed to create a borehole with a bore diameter which is larger by a predetermined amount than an outer diameter of the pile tube, wherein between the borehole wall and an outer side of the Pile tube an annular space is formed, that the annulus is separated from the interior of the pile tube, and that the supply device is provided for a curable medium, wherein the feed device opens into the annulus.
- the annular space on the outside of the pile tube is procedurally separated from the interior of the pile tube. This ensures that no hardenable medium can pass from the outer annulus into the interior of the pile tube. Penetration of soil material into the annulus can also be avoided. But this is not annoying, provided that the strength of the mortar formed in the annulus is not appreciably affected. By a clean separation, an efficient use of the curable medium in the interior as well as a prevention of contamination of the removed soil material inside the Pile tube ensured.
- the feeder opens exclusively in the annulus, but not in the interior of the pile tube.
- the drilling tool can be operated in a conventional manner by a drilling device outside the borehole, for instance on a drilling ship.
- the drilling device has a rotary drive for rotationally driving the drilling tool and that the drilling drive is designed for insertion into the pile tube and for fixing in the pile tube.
- About a corresponding clamping device of the drill drive can be set within the pile tube.
- the drilling device may also be part of an underwater drilling rig that can be lowered into the water.
- the drilling tool is rotationally driven by the drill drive via a drill pipe and that a mixing device for crushing and / or mixing the soil material removed from the drilling tool with a supplied fluid, in particular water, between the drilling tool and the drill pipe.
- the drilling tool and the mixing device can be operated simultaneously and in particular driven in rotation.
- the feeding of the curable medium takes place simultaneously with the operation of the drilling tool.
- the mixing device may comprise mixing blades or mixing blades, which additionally comminute the removed soil material and mix with a supplied fluid, so that the removed soil material reaches a flowable state as a whole.
- the mixing device may in particular also have eccentrically arranged mixing elements, whereby the mixing and comminution effect can be enhanced.
- FIG. 2 shows a longitudinal section through the device of FIG. 1;
- FIG. 3 is an enlarged cross-sectional view taken along section A-A of FIG.
- FIG. 4 shows an enlarged detailed representation of the lower region according to FIG. 2.
- a device 1 according to the invention has, according to FIGS. 1 and 2, a pile tube 10 which is essentially formed from a cylindrical main body 12. At the lower end of the cylindrical base body 12, a larger diameter sleeve-shaped shoulder 16 is formed, which receives a mixing chamber 18.
- a drilling device 50 is arranged within an inner space 14 of the pile tube 10.
- the drilling device 50 can be tightened against the inside of the pile tube 10.
- the pile tube 10 may itself be arranged in a known manner on a drilling rig, in particular a subsea drilling rig.
- the pile tube 10 may be rotationally fixed or rotationally driven via the drilling rig, not shown.
- the pile tube 10 stands still and can then be nachgeschoben after creating a portion of the wellbore axially down into the wellbore.
- a drill string 26 extends axially down to the free end of the pile tube 10.
- a drilling tool 20 is arranged on the drill pipe 26.
- the drilling tool 20 has a delivery helix 24, at the lower end of which, starting from a central pilot 22, a plurality of radially arranged removal teeth 23 are arranged along cutting edges.
- the drill string 26 has an inner drive shaft 28 and an outer drive shaft 38 surrounding it concentrically.
- the inner drive shaft 28 is rotationally driven via a rotary drive 54 of a drive device 52, wherein the torque is transmitted to the drilling tool 20 in front of the inner drive shaft 28.
- the outer drive shaft 38 can be driven via a mixing drive 56 with different rotational direction and / or speed.
- a mixing device 40 is provided, through which removed soil material is mixed with supplied fluid.
- inner drive shaft 28 and the outer drive shaft 38 may be formed as hollow tubular elements, so that they can be used for introducing a fluid into the wellbore, as will be explained in more detail below.
- a borehole is created with a drill diameter, which corresponds to the outer diameter of the sleeve-shaped shoulder 16 at the lower end of the pile tube 10 approximately.
- the pile tube 10 can be tracked into the borehole without appreciable amounts of abraded soil material can flow past the outer circumference of the sleeve-shaped shoulder 16 upwards.
- the feeder 30 has a line 32 which extends from a pump, not shown, along an inner side of the cylindrical base body 12 of the pile tube 10. Via a manifold 34, the supply line 32 opens into the annular space 8, as in particular Fig. 4 can be seen.
- the sleeve-shaped shoulder 16 is fluid-tightly connected to the outer circumference of the cylindrical main body 12 of the pile tube 10 via a radial annular plate 17.
- the annular space 8 which between the borehole wall 5 and the outer circumference of the continuous zy- lindrischen main body 12 is formed, sealed from an inner space 14 of the pile tube 10.
- the drilling tool 20 with conveyor coils 24 and a pilot 22 is arranged with the same outer diameter.
- the drilling tool 20 is driven in rotation via the inner drive shaft 28. It is removed soil material and promoted by the conveyor coils 24 upwards in a mixing chamber 18, which is formed within the sleeve-shaped shoulder 16.
- a mixing device 40 is arranged in the mixing chamber 18.
- the mixing device 40 comprises three plate-shaped inner mixing elements 42 arranged at the same angular distance from one another and attached to the inner drive shaft 28 and rotating therewith.
- the mixing device 40 comprises three outer, also offset by 120 ° to each other arranged plate-shaped outer mixing elements 44 which are rotatably connected to the outer drive shaft 38.
- An outer mixing element 44 has an upper radial strut 46 and a lower radial strut 47, which are firmly connected to one another via an axial connecting element 45.
- the lower radial strut 47 is rotatably supported relative to the inner drive shaft 28.
- the abraded soil material conveyed by the conveying helices 24 is further comminuted and mixed with liquid, which is supplied via fluid lines 58 in the interior of the drill pipe 26.
- the fluid lines 58 are arranged in particular in the intermediate space between the inner drive shaft 28 and the outer drive shaft 38 and have radially lateral and downwardly directed outlet openings for injecting liquid. At the same time, liquid can be conveyed directly downwards via the remaining annular space between the two drive shafts.
- the mixing and liquefying of the removed soil material is additionally improved by a radially inwardly projecting annular projection 60, through which the removed soil material is moved radially inwards into the mixing space 18. will be forced.
- the thus crushed and wetted Bodenmatenal is displaced by the action of the conveyor coils 24 and the supply of liquid up into the interior 14 of the pile tube 10.
- the annular space 8 between the borehole wall 5 and the cylindrical basic body 12 is sealed off from the inner space 14.
- the separation of these two process chambers from each other can in principle be increased by controlling the pressure in the two process chambers by controlling the corresponding filling levels.
- a curable medium is introduced into the annular space via the supply line 32 and the manifold 34 at the lower end of the annular space 8.
- the hardenable medium in particular a cement compound, hardens after drilling the borehole and introducing the pile pipe 10 into the borehole, so that a solid connecting jacket between the borehole wall 5 and the pile pipe 10 is thereby created to form the foundation element.
- a pressure in the interior 14 can be controlled via a filling level of the removed and mixed soil material in the interior 14.
- the filling level can be adjusted in particular by means of a pump, not shown.
- the pressure in the interior 14 may be higher than in the annular space 18, so that leakage of the curable medium from the annular space 8 into the interior space 14 is avoided particularly reliably. This ensures that the removed soil material in the interior 14 is not contaminated with hardenable medium and thus must be disposed of expensively.
- the pressure in the annular space 8 is higher than in the interior 14, whereby penetration of soil material into the annular space 8 is counteracted.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2014308171A AU2014308171A1 (en) | 2013-08-14 | 2014-06-20 | Schweiger, ManfredMethod and device for creating a foundation element in the ground |
US14/911,749 US20160194848A1 (en) | 2013-08-14 | 2014-06-20 | Method and device for producing a foundation element in the ground |
BR112016002867A BR112016002867A2 (en) | 2013-08-14 | 2014-06-20 | method and device for producing a ground foundation element |
CN201480045265.1A CN105612290A (en) | 2013-08-14 | 2014-06-20 | Method and device for creating a foundation element in the ground |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13180333.0A EP2837743B1 (en) | 2013-08-14 | 2013-08-14 | Method and device for producing a foundation element in the ground |
EP13180333.0 | 2013-08-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015022105A1 true WO2015022105A1 (en) | 2015-02-19 |
Family
ID=48998447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/063006 WO2015022105A1 (en) | 2013-08-14 | 2014-06-20 | Method and device for creating a foundation element in the ground |
Country Status (7)
Country | Link |
---|---|
US (1) | US20160194848A1 (en) |
EP (1) | EP2837743B1 (en) |
CN (1) | CN105612290A (en) |
AU (1) | AU2014308171A1 (en) |
BR (1) | BR112016002867A2 (en) |
DK (1) | DK2837743T3 (en) |
WO (1) | WO2015022105A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6691928B2 (en) * | 2018-02-07 | 2020-05-13 | 株式会社ジンズホールディングス | Eyewear set and signal processing unit |
EP3564445B1 (en) * | 2018-05-04 | 2021-08-11 | BAUER Spezialtiefbau GmbH | Method and device for producing a foundation element in the ground |
EP3848512B1 (en) * | 2020-01-07 | 2023-08-16 | BAUER Spezialtiefbau GmbH | Method for creating a foundation element in the ground and foundation element |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010015799A2 (en) | 2008-08-06 | 2010-02-11 | Aws Ocean Energy Ltd | Pile system |
EP2322724A1 (en) | 2009-11-17 | 2011-05-18 | BAUER Maschinen GmbH | Submarine drilling assembly and method for inserting a tubular foundation element into the sea floor |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3864923A (en) * | 1973-09-18 | 1975-02-11 | Lee A Turzillo | Impacted casing method for installing anchor piles or tiebacks in situ |
US3938344A (en) * | 1974-04-29 | 1976-02-17 | Kabushiki Kaisha Takechi Koumusho | Earth auger and method for driving piles and the like by means of said earth auger |
US7226246B2 (en) * | 2000-06-15 | 2007-06-05 | Geotechnical Reinforcement, Inc. | Apparatus and method for building support piers from one or successive lifts formed in a soil matrix |
CN1202318C (en) * | 2003-01-15 | 2005-05-18 | 刘润郊 | Method and apparatus for pile making by boring and pumping mass concrete and rotation jetting slurry |
CN1265062C (en) * | 2003-06-21 | 2006-07-19 | 闫瑞明 | Construction for making piles and tools |
EP1895090B1 (en) * | 2006-08-23 | 2008-10-15 | BAUER Maschinen GmbH | Method and apparatus for creating a borehole in the ground |
CN101240540A (en) * | 2006-09-26 | 2008-08-13 | 王国奋 | Bottom-expanding pile-forming method for immersed tube club-footed pile |
EP2312060B1 (en) * | 2009-10-16 | 2012-09-26 | IHC Holland IE B.V. | System for and method of installing foundation elements in an underwater ground formation |
EP2562310B1 (en) * | 2011-08-23 | 2016-07-20 | BAUER Maschinen GmbH | Submarine drilling assembly and method for producing a borehole in a sea floor |
CN103061341B (en) * | 2013-01-15 | 2017-06-06 | 江苏汤辰机械装备制造有限公司 | Middle pick pile sinking construction method |
-
2013
- 2013-08-14 DK DK13180333.0T patent/DK2837743T3/en active
- 2013-08-14 EP EP13180333.0A patent/EP2837743B1/en not_active Not-in-force
-
2014
- 2014-06-20 AU AU2014308171A patent/AU2014308171A1/en not_active Abandoned
- 2014-06-20 BR BR112016002867A patent/BR112016002867A2/en not_active IP Right Cessation
- 2014-06-20 WO PCT/EP2014/063006 patent/WO2015022105A1/en active Application Filing
- 2014-06-20 CN CN201480045265.1A patent/CN105612290A/en active Pending
- 2014-06-20 US US14/911,749 patent/US20160194848A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010015799A2 (en) | 2008-08-06 | 2010-02-11 | Aws Ocean Energy Ltd | Pile system |
EP2322724A1 (en) | 2009-11-17 | 2011-05-18 | BAUER Maschinen GmbH | Submarine drilling assembly and method for inserting a tubular foundation element into the sea floor |
Also Published As
Publication number | Publication date |
---|---|
EP2837743A1 (en) | 2015-02-18 |
CN105612290A (en) | 2016-05-25 |
US20160194848A1 (en) | 2016-07-07 |
BR112016002867A2 (en) | 2017-08-01 |
AU2014308171A1 (en) | 2016-03-03 |
DK2837743T3 (en) | 2016-02-29 |
EP2837743B1 (en) | 2015-12-09 |
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