EP1942247B1 - Verfahren und Vorrichtung zum Erstellen einer Bohrung im Boden durch Verdrängerbohren - Google Patents

Verfahren und Vorrichtung zum Erstellen einer Bohrung im Boden durch Verdrängerbohren Download PDF

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Publication number
EP1942247B1
EP1942247B1 EP07000129A EP07000129A EP1942247B1 EP 1942247 B1 EP1942247 B1 EP 1942247B1 EP 07000129 A EP07000129 A EP 07000129A EP 07000129 A EP07000129 A EP 07000129A EP 1942247 B1 EP1942247 B1 EP 1942247B1
Authority
EP
European Patent Office
Prior art keywords
drill string
carrying capacity
load
operating parameters
soil
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
EP07000129A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1942247A1 (de
Inventor
Erwin Emil Stötzer
Robert Wenger
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
Priority to ES07000129T priority Critical patent/ES2323023T3/es
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP07000129A priority patent/EP1942247B1/de
Priority to DK07000129T priority patent/DK1942247T3/da
Priority to AT07000129T priority patent/ATE428043T1/de
Priority to PT07000129T priority patent/PT1942247E/pt
Priority to PL07000129T priority patent/PL1942247T3/pl
Priority to DE502007000585T priority patent/DE502007000585D1/de
Publication of EP1942247A1 publication Critical patent/EP1942247A1/de
Priority to HK09100095.5A priority patent/HK1123079A1/xx
Application granted granted Critical
Publication of EP1942247B1 publication Critical patent/EP1942247B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/003—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by analysing drilling variables or conditions
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/26—Drilling without earth removal, e.g. with self-propelled burrowing devices

Definitions

  • the invention relates to a method for creating a bore in the ground by positive displacement drilling in which a drill string, which has at least a cross-section enlarged displacement in a lower region, is rotationally retracted into the ground, operating parameters of the drill string during retraction of the drill string are detected in the ground and the operating parameters are used to determine the carrying capacity of the bore, according to the preamble of claim 1.
  • the invention further relates to a device for making a hole in the ground by positive displacement drilling according to the preamble of claim 8.
  • a device for making a hole in the ground by positive displacement drilling is formed with a drill string having in a lower region at least a cross-section enlarged displacement, and a drive means for rotational driving and axial displacement the drill string, wherein means are provided for detecting operating parameters of the drill string during axial retraction of the drill string in the ground, and wherein a computing device is provided, which sets the operating parameters for determining the carrying capacity of the bore in a mathematical relationship.
  • a generic method and a generic device are for example from the EP 1 277 887 A2 known.
  • Verdrängerbohrclar In a known Verdrängerbohrclar a drill string, which has a displacement area in the region of its bottom end, introduced into the soil. In this displacement region of the drill string is formed larger diameter compared with arranged below drill string areas. In the displacer area, pending drilling material is displaced radially with respect to the drill string while forming a cavity and compressing adjacent floor areas. In the resulting Cavity can be introduced a filler to form a foundation element. Verdrängerbohren go for example from the DE 103 44 353 A1 and the DE 42 20 976 C1 out.
  • ramming probing for example the "Standard Penetration Test" (SPT).
  • SPT Standard Penetration Test
  • the Standard Penetration Test introduces a standardized reaming probe into the ground and measures the number of ramming strokes required to insert the probe a certain distance. By calculating the determined number of impacts with empirical factors based on the soil type, the limit load capacity of piles can be estimated.
  • a positive displacement drilling method however, such a procedure can be comparatively complicated because, in addition to the drilling device, a piling device must also be provided. In addition, the accuracy for certain applications can not be sufficiently high.
  • the EP 0 842 329 B1 discloses a drilling method in which pending soil material is conveyed by means of a drilling auger along a drill pipe, without being given a radial displacement. It is intended to determine the rotational speed, the penetration rate and / or the torque on the auger and to control such that the screw flights are loaded with soil material derived from the screw tip.
  • the penetration rate should be adapted to the conveying speed of the auger, that neither too much material is promoted and threatens clogging of the screw flights, still too little material is promoted and threatens collapse of the well.
  • the EP 1 229 172 A1 describes a drilling process in which a drilling machine is equipped with sensors to determine the dynamic properties of the drilling tool. The readings of these sensors are stored for consecutive depths. For each depth, at least one variable representing the quality of the soil is calculated from the stored measurements.
  • the EP 0 401 119 A1 discloses another drilling method in which parameters are recorded.
  • the object of the invention is to provide a Verdrängerbohrbacter and Verdrängerbohrvoriques, which allow in a particularly simple and economical way, the creation of wells with known carrying capacity.
  • the invention is based on the finding that there is a relationship between the operating parameters prevailing when introducing a positive displacement drilling tool into the ground and the carrying capacity of the resulting bore. Among other things, this relationship may be due to the fact that during positive displacement drilling a targeted radial displacement and thus compression of the surrounding soil material takes place, wherein the compression properties in turn are related to the load capacity.
  • the load-carrying capacity is determined on the basis of measurements taken directly during the production of the displacement bore on the positive displacement drilling tool.
  • the elaborate sinking special exploratory drilling by means of independent probing devices can thus be omitted, so that according to the invention a particularly low cost and a particularly high efficiency are given.
  • the load capacity data can be determined directly on the actual bore itself and need not be determined at probing sites spaced from the bore, a particularly accurate load capacity determination is possible according to the invention, which reflects the soil conditions of the actual well particularly well.
  • a cavity formed in the bottom when retracting the drill string is filled with a particularly hardenable filling material, whereby a foundation element can be obtained.
  • a particularly hardenable filling material such as a cement, cement, or any other suitable filling material.
  • the filling can take place during and / or after retraction of the drill string.
  • At least the torque on the drill string, the penetration depth of the drill string per revolution and in particular the penetration force of the drill string are used as operating parameters.
  • This allows a particularly accurate characterization of the soil Wegterten and thus a particularly accurate determination of the carrying capacity.
  • further measured quantities which are related to at least one of the mentioned measured quantities for the purpose of determining the aforementioned measured variables.
  • the hydraulic pressure can be determined on a hydraulic rotary drive for the drill string and from this the torque can be determined on the drill string.
  • the capacity index ⁇ can be a function f of the quotient of the torque M on the drill string to the penetration depth of the drill string per revolution ⁇ ⁇ d n be:
  • n ⁇ f M ⁇ ⁇ d n
  • the code ⁇ can, for example, characterize the soil type of the soil layer that has been passed through.
  • the determined operating parameters and / or the determined load capacity index for determining the carrying capacity are compared with a value table.
  • the value table can be determined empirically, for example.
  • a particularly simple and economic load-bearing capacity determination according to the invention is further given by the fact that to determine a mapping rule between the operating parameters and the load capacity and / or a mapping rule between the load capacity index and the carrying capacity in advance test wells are carried out in soil layers with known properties.
  • the carrying capacity of the unknown soil layer can be equated with the carrying capacity of a known soil layer, if there is at least approximately agreement between the operating parameters and / or the capacity index.
  • the test bores thus serve to calibrate the method according to the invention and / or the device according to the invention.
  • the properties of the soil layers in which the test bores are made, in particular their carrying capacity, are preferably determined by measurement. For this purpose, any known method, such as a Rammsonond istsclar be used.
  • the operating parameters is detected in the soil as a function of the penetration depth of the drill string.
  • all operating parameters used to determine the carrying capacity are recorded as a function of depth.
  • Depth-dependent detection makes it possible to determine the position and / or the thickness of viable layers.
  • the penetration depth-dependent operating parameter can be used to determine a depth profile of the load capacity. For example, the load index over the penetration depth of the drill string can be determined, whereby the depth profile of the load capacity can be characterized.
  • At least one of the operating parameters for previously determined Eindschreibtiefe Coloure of the drill string is determined in the soil.
  • the Eindschreibtiefe Coloure can be for example about 3 meters.
  • a regional determination of the operating parameters also brings about a certain averaging, so that short-term fluctuations in the operating parameters, which result from local inhomogeneities in the soil, are not excessive in importance.
  • a computing device in particular a computer, is suitably provided, which is in signal connection with receivers for the operating parameters and / or for measured variables which are related to the operating parameters.
  • an end depth of the bore is set as a function of the determined operating parameters, in particular of the determined load-bearing capacity index. For example, it may be provided to drill automatically until a bottom layer with a previously determined limit load capacity has been reached.
  • the drill string has at least one delivery spiral in the region of the displacement.
  • the conveyor coil is provided between the drill string tip and the displacer section and may serve to excavate soil material impinging on the drill string and to convey it to the displacer section.
  • means are provided for detecting operating parameters of the drill string during axial retraction of the drill string in the ground and a computing device which sets the operating parameters for determining the carrying capacity of the bore in a mathematical relationship.
  • a device according to the invention can be set up in particular for carrying out the method according to the invention, whereby the advantages explained in this connection can be achieved.
  • FIG. 1 An embodiment of a Verdrängerbohrvoroplasty invention is in Fig. 1 shown.
  • the device has a drill string 10, which can be rotated in the direction of the arrow by means of a drive device 41 and can be moved axially in the direction of the arrow.
  • the drill string 10 Near its tip, the drill string 10 has a displacer portion 20 in which the drill string 10 is made larger in diameter as compared to the portions above and below.
  • a first conveyor coil 11 is arranged on the drill string 10.
  • a second conveying spiral 12 is provided on the drill string 10.
  • the first conveyor spiral 11 arranged in opposite directions upper conveyor coil 12 is used for supplying soil material, which breaks from upper bore areas in the bore 1, to the displacement area 20, where it is also pressed radially into adjacent floor areas.
  • a pick-up device 51 is provided, with which the penetration depth of the drill string 10 per rotation of the drill string 10 can be determined.
  • a further pick-up device 52 is provided on the drive device 41 and serves to determine the torque with which the drill string 10 is acted upon by the drive device 41.
  • the axially directed penetration force on the drill string 10 can be determined.
  • Both receiver devices 51 and 52 are in signal connection with a computing device 53, in particular in line connection. This computing device 53 is used to determine the carrying capacity of the bore 1 from the recorded torque, the recorded penetration depth per revolution and the recorded penetration force.
  • the computing device 53 can be used to determine a load capacity index ⁇ from the stated values.
  • the bottom 3 intersected by the bore 1 has three superimposed bottom layers 4, 4 ', 4 "with different load capacities Accordingly, the computing device 53 determines a different load capacity index ⁇ when stepping through the bottom layers 4, 4', 4" , ⁇ ', ⁇ ".

Landscapes

  • Mining & Mineral Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Earth Drilling (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Drilling And Boring (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Soil Working Implements (AREA)
EP07000129A 2007-01-04 2007-01-04 Verfahren und Vorrichtung zum Erstellen einer Bohrung im Boden durch Verdrängerbohren Active EP1942247B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP07000129A EP1942247B1 (de) 2007-01-04 2007-01-04 Verfahren und Vorrichtung zum Erstellen einer Bohrung im Boden durch Verdrängerbohren
DK07000129T DK1942247T3 (da) 2007-01-04 2007-01-04 Fremgangsmåde og indretning til tilvejebringelse af en boring i jorden ved hjælp af fortrængningsboring
AT07000129T ATE428043T1 (de) 2007-01-04 2007-01-04 Verfahren und vorrichtung zum erstellen einer bohrung im boden durch verdrangerbohren
PT07000129T PT1942247E (pt) 2007-01-04 2007-01-04 Processo e dispositivo para fazer um furo no solo através de perfuração deslocada
ES07000129T ES2323023T3 (es) 2007-01-04 2007-01-04 Procedimiento y dispositivo para la realizacion de una perforacion en el suelo mediante perforacion por desplazamiento.
DE502007000585T DE502007000585D1 (de) 2007-01-04 2007-01-04 Verfahren und Vorrichtung zum Erstellen einer Bohrung im Boden durch Verdrängerbohren
PL07000129T PL1942247T3 (pl) 2007-01-04 2007-01-04 Metoda i urządzenie do wykonania odwiertu w podłożu przez wiercenie wyporowe
HK09100095.5A HK1123079A1 (en) 2007-01-04 2009-01-06 Method and apparatus to drill in the soil by displacement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07000129A EP1942247B1 (de) 2007-01-04 2007-01-04 Verfahren und Vorrichtung zum Erstellen einer Bohrung im Boden durch Verdrängerbohren

Publications (2)

Publication Number Publication Date
EP1942247A1 EP1942247A1 (de) 2008-07-09
EP1942247B1 true EP1942247B1 (de) 2009-04-08

Family

ID=38066416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07000129A Active EP1942247B1 (de) 2007-01-04 2007-01-04 Verfahren und Vorrichtung zum Erstellen einer Bohrung im Boden durch Verdrängerbohren

Country Status (8)

Country Link
EP (1) EP1942247B1 (xx)
AT (1) ATE428043T1 (xx)
DE (1) DE502007000585D1 (xx)
DK (1) DK1942247T3 (xx)
ES (1) ES2323023T3 (xx)
HK (1) HK1123079A1 (xx)
PL (1) PL1942247T3 (xx)
PT (1) PT1942247E (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3533932A1 (de) 2018-03-01 2019-09-04 BAUER Spezialtiefbau GmbH Verfahren und system zum erstellen eines gründungselementes im boden

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1403419B1 (it) 2010-12-23 2013-10-17 Soilmec Spa Metodo ed apparato per la perforazione del terreno.
DE102015008015A1 (de) 2015-06-22 2016-12-22 Liebherr-Werk Nenzing Gmbh Verfahren zum Steuern einer Vibrationsramme
DE102016014685A1 (de) * 2016-12-12 2018-06-14 Tracto-Technik Gmbh & Co. Kg Verfahren und System zum Ermitteln einer Bodenklasse sowie Verwendung beim Ermitteln einer Bodenklasse

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020090271A1 (en) * 1998-03-10 2002-07-11 Nippon Steel Corporation Screwed steel pile and method of construction management therefor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2647849B1 (fr) * 1989-05-31 1995-12-29 Soletanche Procede de caracterisation d'une couche de terrain
JPH06299531A (ja) * 1993-04-13 1994-10-25 Kokudo Kiso:Kk 支持地盤性状の測定方法及び装置
FR2820155B1 (fr) * 2001-02-01 2003-04-25 Cie Du Sol Procede et machine pour la realisation de pieux fores en terrain dur
GB2377235A (en) * 2001-07-17 2003-01-08 Cie Du Sol Drilling tool
US20050100415A1 (en) * 2003-11-06 2005-05-12 Larovere Tom A. Profiler for installation of foundation screw anchors

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020090271A1 (en) * 1998-03-10 2002-07-11 Nippon Steel Corporation Screwed steel pile and method of construction management therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3533932A1 (de) 2018-03-01 2019-09-04 BAUER Spezialtiefbau GmbH Verfahren und system zum erstellen eines gründungselementes im boden
WO2019166153A1 (de) 2018-03-01 2019-09-06 Bauer Spezialtiefbau Gmbh Verfahren und system zum erstellen eines gründungselementes im boden

Also Published As

Publication number Publication date
PL1942247T3 (pl) 2009-10-30
HK1123079A1 (en) 2009-06-05
DE502007000585D1 (de) 2009-05-20
ATE428043T1 (de) 2009-04-15
DK1942247T3 (da) 2009-06-02
PT1942247E (pt) 2009-05-28
EP1942247A1 (de) 2008-07-09
ES2323023T3 (es) 2009-07-03

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