EP2245232A1 - Vorrichtung und verfahren zum einbringen von bohrungen ins erdreich, deren querschnitte sich teilweise überschneiden - Google Patents
Vorrichtung und verfahren zum einbringen von bohrungen ins erdreich, deren querschnitte sich teilweise überschneidenInfo
- Publication number
- EP2245232A1 EP2245232A1 EP09713796A EP09713796A EP2245232A1 EP 2245232 A1 EP2245232 A1 EP 2245232A1 EP 09713796 A EP09713796 A EP 09713796A EP 09713796 A EP09713796 A EP 09713796A EP 2245232 A1 EP2245232 A1 EP 2245232A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bore
- guide
- wall
- guide element
- drilling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 10
- 238000005553 drilling Methods 0.000 claims description 23
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
-
- 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
- E21B7/04—Directional drilling
Definitions
- the invention relates to a device for introducing a second hole in the ground, whose cross section crosses the cross section of an already existing first bore partially, with a drilling device, and with an operatively connected to the drilling device guide means for guiding the drilling device relative to the already existing first bore, said the guide device comprises at least one first guide element, which interacts with the bore wall of the first bore on the side facing the second bore.
- the invention relates to a method for introducing approximately parallel holes in the ground, the cross sections of which partially overlap, with the aid of the device according to the invention.
- EP 1 770 219 A1 An apparatus mentioned above is known from EP 1 770 219 A1.
- this device has second guide elements, which bear against the side of the wall of the second bore facing the first bore.
- the invention is therefore based on the object to provide a device with which a second hole in the ground with respect to their course more precise to the position of an existing hole whose cross section is to be partially overlapped, can be introduced.
- the bore according to the invention comprises at least one second guide element which interacts with the side of the first bore facing away from the second bore, the guidance of the drilling device takes place exclusively by interaction with the walls of the first bore. Due to this measure, the lowering of the second bore is reliable, in particular a bleeding of the second bore to the first hole is prevented.
- the volume of the second bore above the drill bottom is at least almost completely available for the device components required for releasing and discharging the soil, known from the prior art, so that maximum advancing speeds and thus the best possible construction progress can be achieved.
- the first guide element is preferably configured in such a way that it is suitable for interacting with the first bore in the direction of advance of the second bore before the bore of the second bore. Due to this measure, the first guide element can rest against the wall of the first bore over a particularly large area and there is no danger that its guiding function will be lost as a result of breaking in of the connecting region between the adjacent holes.
- the first guide element is then preferably designed such that it rests against the wall of the first bore on both sides of the plane connecting the longitudinal axes of the first and the second bore.
- the two-sided system which may be provided in particular symmetrically to the plane, prevents that by supporting transverse to the plane extending forces arise, which could then exert transverse to the direction of advance moments directed to the drilling device. If such moments are to be feared due to other influences, then on the other hand, the system of the guide element can be selectively selected asymmetrically to the plane so as to generate reversely directed moments for at least partial compensation.
- the second bore can be introduced as deep as the first bore, it is particularly advantageous to design the first guide element such that it is designed to be displaceable in a directional component parallel to the longitudinal axis of the first bore.
- the first guide element particularly preferably - arranged on the leading end in the advancing direction of a length-variable holder. It can then be withdrawn as soon as it reaches the bottom of the first bore, whereupon the second bore can be further advanced until its sole lies approximately in the same plane as that of the first bore.
- the holder In order to give the holder the required properties, it may in particular be arranged such that its adjustment direction encloses an acute angle with the longitudinal axis of the first bore. In this case, retraction of the first guide element at the same time causes the first guide element to lift away from the bore wall and thus does not constitute an obstacle to the further advance of the second bore.
- the holder can comprise an electrically, pneumatically or hydraulically operated length adjuster, which can then be activated if, for example, correspondingly provided sensors detect an impact of the first guide element on the sole.
- the holder with a spring-loaded length adjuster, which presses the first guide element against the wall of the first bore.
- This variant is characterized in particular by its simple and therefore cost-effective manufacturability and its Störunan perennialkeit.
- the device according to the invention which comprises a measuring device for detecting the position of the guide device in the first bore. If displacements of the guide device are detected with this measuring device, then they can signal an unwanted running out of the second bore from the parallel position to the first bore. Such leakage can be caused for example by oblique impingement of the drilling device when lowering the second hole to harder ground.
- the measuring device thus enables the operator of the device to take appropriate countermeasures in the event of such a signal.
- the measuring device may include an electronic inclinometer, also called an "inclinometer” or also a laser gyro, also called “laser gyro".
- the drilling device comprises a rotary-driven drill head and a control or regulating device for influencing the rotary drive
- the measuring device is-particularly preferably-operatively connected to the control or regulating device.
- the rotary drive can be influenced by means of the control or regulating device so that a return-directed force is generated.
- the direction of rotation in which the drill head is driven can be reversed, since forces always directed transversely to the connection plane through the friction of the drill head in the borehole on the drill head Act.
- the device may comprise supporting elements acting on the drilling device, which may be brought into contact with the wall of the second bore, preferably above the drilling device, in directions transverse to the connecting plane by means of adjusting elements.
- the control elements are then in turn connected to a control or regulating device, which in turn is in turn connected to the measuring device.
- those of the adjusting elements can be automatically brought into contact with the wall of the second bore, which are required to achieve a return force.
- the device designed in this way therefore makes it possible to introduce boreholes adjacent to one another, which are partially intersecting in cross-section, into the ground in a degree of accuracy which has hitherto not been achieved.
- the invention also extends to a method for introducing approximately parallel bores into the ground, whose cross sections partially overlap, with the following steps:
- the longitudinal axis of the first bore is preferably changed in a pivoting of the guide means, the rotational drive direction for generating a moment acting in the return pivoting moment.
- a force acting in the backward pivoting direction can be generated by a supporting element acting on the drilling device, which is pressed against the wall of the second bore.
- Fig. 1 a - schematically - a first embodiment of a device according to the invention in a side view while driving a second bore which partially crosses the cross section of a first, adjacent bore (section A-B in Fig. 1 b)).
- FIG. 1 b the same device - again schematically - in a view from above;
- Fig. 2a shows a second embodiment of a device according to the invention in a Fig. 1a) corresponding view and Fig. 2b), the device of FIG. 2a) from above (view A in Fig. 2a)).
- the apparatus designated as a whole by 100 in FIG. 1 comprises a rotary drive 3, driven by a rotary drive, not shown in the drawing, about its longitudinal axis S2, which coincides with the longitudinal axis of the bore 2 to be introduced, hereinafter referred to as the "second bore” 1a), a drill head 4 is arranged on the drill string 3, which is rotated with the drill pipe 3. Inside the drill string 3 there is a channel 5 shown in dashed lines in FIG. As seen in the direction of insertion, the front end opens into the end face 6 of the drill head 4.
- the second bore 2 is introduced into the ground such that its cross section overlaps the cross section of a previously introduced first bore 1 shown in FIG. 1 to the right of the bore 2.
- the drill string 3 and the drill head 4 as a whole, denoted by 8 drilling device is operatively connected to a guide means designated as a whole with 9.
- a holder 12 On the carrier 10, a holder 12 is attached. It is designed in such a multi-part design that it is adjustable in length in the direction of the arrow P by means of a pneumatic cylinder, not shown in the drawing. As can be seen from FIG. 1 a), the adjustment direction includes an acute angle ⁇ with the longitudinal axis S 1.
- the front end of the holder 12 in the direction of insertion carries a first guide element 13 which, when the holder 12 is extended, extends below the bottom hole 7 at the bottom
- the further support of the guide means 9 on the wall of the first bore 1 serve second guide elements 14 which are fixed by means of rigid arms 15 on the carrier 10 of the guide means 9.
- the jib 15 and the second guide elements 14 are designed so that the guide elements in the area facing away from the second bore area on the bore wall of the first bore lie flat, as shown schematically in Fig. 1 b).
- a measuring device 16 is arranged on the guide device 9, by means of which changes in position of the guide device 9 can be detected and connected via signal lines 17 of a control or regulating device, not shown in the drawing, for influencing the rotary drive for the drill pipe, likewise not shown in the drawing.
- the measuring device 16 and the control or regulating device are matched to one another such that in the case of signals which indicate an undesired change in position, the control or regulating device influences the drive device such that counteracting forces are generated in the second bore 2 of the position change.
- FIG. 2 A second embodiment of the device 200 according to the invention is shown in FIG. In order to avoid repetition, only the differences from the device 100 discussed with reference to FIG. 1 will be described below.
- the measuring device 16 is fastened by means of a separate carrier 18, which is fixed above the carrier 10 on the drill pipe 3 and also fixed to the latter in the direction of the longitudinal axis S2.
- Within the second bore 2 perpendicular to the connecting plane E between the two bores 1, 2 acting radially outward opposing support members 19, 20 are provided. These are based on in the direction of the arrows Q variable length adjusting elements 21, 22 on the support 18 from.
- control elements 21, 22 are connected to a control or regulating device, not shown in the drawing, to which the measuring device 16 is connected via the signal lines 17. Signaled the measuring device 16 in operation an undesirable change in position of the guide device 9 and thus of the drill string 3, the support elements 19, 20 are displaced by means of the adjusting elements 21, 22 against the wall of the second bore, that forces in the sense of a back displacement of the guide device. 9 or the drill pipe 3 are effected.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Paleontology (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008010773A DE102008010773A1 (de) | 2008-02-25 | 2008-02-25 | Vorrichtung und Verfahren zum Einbringen von Bohrungen ins Erdreich, deren Querschnitte sich teilweise überschneiden |
PCT/EP2009/051780 WO2009106448A1 (de) | 2008-02-25 | 2009-02-16 | Vorrichtung und verfahren zum einbringen von bohrungen ins erdreich, deren querschnitte sich teilweise überschneiden |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2245232A1 true EP2245232A1 (de) | 2010-11-03 |
EP2245232B1 EP2245232B1 (de) | 2016-07-06 |
Family
ID=40592100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09713796.2A Not-in-force EP2245232B1 (de) | 2008-02-25 | 2009-02-16 | Vorrichtung und verfahren zum einbringen von bohrungen ins erdreich, deren querschnitte sich teilweise überschneiden |
Country Status (4)
Country | Link |
---|---|
US (1) | US8505650B2 (de) |
EP (1) | EP2245232B1 (de) |
DE (1) | DE102008010773A1 (de) |
WO (1) | WO2009106448A1 (de) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE22087C (de) | E. H. SlEBERT in Berlin, Moritz-Str. 22 | Neuerungen in der Betriebsführung eines mit zwei ohne Umkehrung arbeitenden Regeneratoren versehenen Hafenofens | ||
DE833335C (de) * | 1950-09-20 | 1952-03-06 | Deilmann Bergbau G M B H C | Einrichtung zur Bestimmung der Bohrrichtung von Gesteinsbohrloechern waehrend des Betriebes |
DE898724C (de) * | 1952-04-26 | 1953-12-03 | Holzmann Philipp Ag | Verfahren zum Herstellen von Bohrpfahlwaenden |
DE3103336C2 (de) * | 1981-01-31 | 1982-12-02 | Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz | Verfahren und Vorrichtung zum Niederbringen von Richtbohrungen |
US5056242A (en) | 1989-05-12 | 1991-10-15 | Finic, B.V. | Underground wall construction method and apparatus |
DE69331552T2 (de) * | 1993-10-22 | 2002-08-08 | Chemical Grout Co | Mehrwellenaushubsvorrichtung |
EP0649716A1 (de) | 1993-10-26 | 1995-04-26 | CASAGRANDE SpA | Fräser zur Formung von Schlitzfugen |
DE19950040A1 (de) * | 1999-10-16 | 2001-05-10 | Dmt Welldone Drilling Services | Vorrichtung zum Niederbringen verlaufkontrollierter Bohrungen |
FR2852352A1 (fr) | 2003-07-10 | 2004-09-17 | Cie Du Sol | Installation de forage equipee de moyens de correction de verticalite |
US7306056B2 (en) | 2003-11-05 | 2007-12-11 | Baker Hughes Incorporated | Directional cased hole side track method applying rotary closed loop system and casing mill |
ITTO20050682A1 (it) | 2005-09-30 | 2007-04-01 | Soilmec Spa | Metodo ed attrezzatura per realizzare un diaframma impermeabile di pali secanti. |
JP4573123B2 (ja) * | 2005-12-14 | 2010-11-04 | 清水建設株式会社 | 地盤改良装置および液状化防止工法 |
-
2008
- 2008-02-25 DE DE102008010773A patent/DE102008010773A1/de not_active Ceased
-
2009
- 2009-02-16 EP EP09713796.2A patent/EP2245232B1/de not_active Not-in-force
- 2009-02-16 US US12/919,013 patent/US8505650B2/en active Active
- 2009-02-16 WO PCT/EP2009/051780 patent/WO2009106448A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2009106448A1 * |
Also Published As
Publication number | Publication date |
---|---|
US8505650B2 (en) | 2013-08-13 |
US20110005833A1 (en) | 2011-01-13 |
WO2009106448A1 (de) | 2009-09-03 |
DE102008010773A1 (de) | 2009-08-27 |
EP2245232B1 (de) | 2016-07-06 |
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