EP1888878B8 - Procede et dispositif pour le forage, notamment pour le forage par percussion ou par roto-percussion, d'un trou dans le sol ou la roche - Google Patents

Procede et dispositif pour le forage, notamment pour le forage par percussion ou par roto-percussion, d'un trou dans le sol ou la roche

Info

Publication number
EP1888878B8
EP1888878B8 EP06741019A EP06741019A EP1888878B8 EP 1888878 B8 EP1888878 B8 EP 1888878B8 EP 06741019 A EP06741019 A EP 06741019A EP 06741019 A EP06741019 A EP 06741019A EP 1888878 B8 EP1888878 B8 EP 1888878B8
Authority
EP
European Patent Office
Prior art keywords
anchoring element
drill bit
drill
drilling
borehole
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
EP06741019A
Other languages
German (de)
English (en)
Other versions
EP1888878A1 (fr
EP1888878B1 (fr
Inventor
Josef Mocivnik
Alfred Wagner
Karl BÖHM
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.)
DYWIDAG-Systems International GmbH
Original Assignee
Dywidag Systems International GmbH Austria
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 Dywidag Systems International GmbH Austria filed Critical Dywidag Systems International GmbH Austria
Priority to SI200631122T priority Critical patent/SI1888878T1/sl
Priority to PL06741019T priority patent/PL1888878T3/pl
Publication of EP1888878A1 publication Critical patent/EP1888878A1/fr
Publication of EP1888878B1 publication Critical patent/EP1888878B1/fr
Application granted granted Critical
Publication of EP1888878B8 publication Critical patent/EP1888878B8/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/20Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0053Anchoring-bolts in the form of lost drilling rods
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0073Anchoring-bolts having an inflatable sleeve, e.g. hollow sleeve expanded by a fluid

Definitions

  • the present invention relates to a method for drilling, in particular percussion or rotary impact drilling of a hole in soil or rock material and fixing an anchor in the hole, wherein a drill hole is formed by a drill bit mounted on a drill string, as well as to a device for drilling in particular impact or rotary impact drilling of a hole in soil or rock material and fixing an anchor in the hole, wherein a borehole is formed by a drill bit mounted on a drill string.
  • the drill pipe can be formed on its outer circumference with additional ribs and grooves, so that when the drill pipe remains in the borehole and a subsequent backfilling a correspondingly good anchor effect can be achieved.
  • an armature or an anchoring device is introduced into the borehole, for example from EP-B 0 241 451, US Pat.
  • a 4,490,074, DE-AS 21 05 888, US-A 4,310,266, EP-A 0 875 663 and other references embodiments are known in which the subsequently introduced, for example, tubular anchoring by corresponding holding elements on a reduced compared to the final diameter which, after complete insertion into the wellbore, abuts or presses against the borehole wall to achieve a desired anchoring effect.
  • a disadvantage of this known prior art on the one hand, the fact that the borehole must be prepared in a first step, and then after removing the drilling tool together with the drill string in a further process step, the anchor device is introduced into the optionally long hole having a borehole, then subsequently An investment in the borehole wall succeeds.
  • the present invention therefore aims to provide a method and a device of the type mentioned, with a structurally simple means a provisional backup already during the drilling process and a reliable anchoring immediately after completion of the drilling process can be achieved.
  • a method of the type mentioned is essentially characterized in that an anchoring element surrounding the drill string is frictionally introduced into the borehole, in particular at a distance from the drill bit, and that after completion of the borehole, the anchoring element is widened.
  • the anchoring element after completion of the well, is additionally expanded in abutment against the borehole wall, a correspondingly secure and reliable anchoring effect immediately after completion of the borehole and in particular without additional steps in contrast to the prior art, where after completion of the drilling Hole removal of the drill string and the drill bit and a subsequent introduction of an anchor element provided with anchoring element provided on the circumference.
  • the drill string is withdrawn after completion of the borehole in the direction of the anchoring element and the anchoring element by a drill rod on the side remote from the excavation side of the drill bit Expander element is widened.
  • the anchoring element according to the invention frictionally engaged and thus introduced in its position introduced into the interior of the borehole, the drill pipe together with the drill bit can be withdrawn over a the section between the drill bit and the anchoring element corresponding length from the borehole, whereupon the anchoring element is widened by a mounted on the drill string expander in contact with the well and additionally pressed.
  • the strength or resistance of the anchoring after widening of the anchoring element be determined, in particular by setting a checking device on the drill string at the end projecting from the borehole.
  • the anchoring element is taken directly at a distance from the drill bit in continuation of the drilling process, it allows for a such increase in the length of the borehole through the anchoring element, which in turn is frictionally engaged or placed in contact with the borehole inner wall, a provisional backup and subsequently achieve a simple determination of the anchoring element by widening.
  • the anchoring element is widened to an outer circumference which is larger than the first expansion process.
  • a device of the abovementioned type is essentially characterized in that the drill string is surrounded by an anchoring element at the rear side facing away from the surface of the drill bit, in particular at a distance from the drill bit, whose outer dimension at least partially exceeds the circumference of the wellbore produced by the drill bit.
  • the anchoring element due to the fact that the anchoring element, the outer dimension of which at least partially exceeds the circumference of the wellbore produced by the drill bit, is essentially frictionally inserted into the interior of the wellbore during the drilling operation, a simple provisional securing in the wellbore succeeds to provide.
  • a slotted tube or tube which subregions of a reduced outer circumference has fangs or reduced external dimensions, can be partially vary slightly in adaptation to different geological conditions, it is always ensured that a frictional engagement is present at least in some areas and thus a provisional securing the anchoring element during the production of the well can be achieved ,
  • the anchoring element is formed with a bevel at its end facing the drill bit.
  • a chamfer or taper on the end facing the drill bit end of the anchoring element in particular prevents seizure or wedging on the inner wall of the borehole during insertion of the anchoring element during the drilling operation.
  • the expander element which conically tapers in the direction of the anchoring element, can be correspondingly easily deployed from the anchoring element when the drill rod is subjected to force, and the drilling process can then be carried out or continued via the upstream drill bit.
  • the drill string festergbarer stop which can be fixed to the drill string, can be formed, for example, in the manner of a nut or a threaded annular element which can be fixed in a threaded drill pipe in adaptation to the intended positioning of the anchoring element on the drill pipe.
  • the anchoring element is formed at least in its end region facing the drill bit from a material with a memory effect biased in the direction of a reduction of the outer dimension. After removal of the expander element from the anchoring element, the anchoring element returns at least partially or in the section facing the drill bit substantially to its original external dimensions, so that reliable insertion of the anchoring element is also possible during the continued drilling operation.
  • the outer dimension of the anchoring element during the drilling process exceeds the outer circumference of the drill bit by a maximum of 10 percent, preferably about 3 to 5 percent.
  • FIG. 1 shows a schematic partial section through a first embodiment of a device according to the invention for carrying out the method according to the invention during the drilling process.
  • Fig. 2 is a side view of the embodiment of FIG. 2;
  • Fig. 3 is a front view of the drill bit according to the arrow III in Fig. 1;
  • Fig. 4 is a section along the line IV-IV of Fig. 2;
  • 5 shows a side view of the embodiment according to FIGS. 1 and 2, wherein the drill string is retracted for at least partial widening of the anchoring element;
  • Fig. 6 is a sectional view through the embodiment of FIG. 5; and
  • FIG. 7 shows a side view corresponding to FIG. 2 of a modified embodiment of a device according to the invention for carrying out the method according to the invention; and
  • FIG. 8 shows a section along the line VIII-VIII of FIG. 7.
  • a device for producing a well not shown, generally designated 1, wherein on a particular hollow drill string 2, a drill bit 3 is mounted, which by a drive device, not shown in detail, which projecting from the borehole End of the drill string 2 engages, is driven to a rotating and / or beating movement for producing the well not shown in detail.
  • an anchoring element 4 is provided, the outer circumference or outer diameter of den- 3 and 4, wherein it is shown that the diameter D (I) of the drill bit 3 is smaller than the diameter D (2) of the anchoring element 4.
  • a widening element 6 is additionally mounted on the drill pipe 2 between the drill bit 3 and the anchoring element 4, which has a cross section tapering or reduced in the direction of the anchoring element 4.
  • a stop for example in the form of a ring 7 is provided, on which the anchoring element 4 comes into abutment.
  • the anchoring element 4 at its end facing the drill bit 3 a chamfer or taper 8, which allows easy insertion during the frictional engagement on the inner wall of the well.
  • cylindrical or tubular anchoring element 4 has a longitudinally extending slot 9, which according to the dimensions of the borehole inner wall prevents introduction of an excessive frictional force.
  • the outer dimension of the anchoring element 4 during the drilling process exceeds the outer circumference of the drill bit 3, as shown in FIGS. 3 and 4, by a maximum of 10 percent, for example about 5 percent.
  • Fig. 5 and 6 it is shown how after completion of a drilling operation, the drill string 2 and the drill bit 3 are withdrawn together with the expander 6 according to the arrow 10 against the drilling direction toward the anchoring element 4, wherein by entering the in the direction of Drill bit 3 conically widening expansion element 6, the anchoring element 4 is correspondingly expanded at the end facing the drill bit 3 and placed in an additionally secured position on the borehole wall.
  • the expansion element 6 is withdrawn with the drill bit 3 in the anchoring element 4, wherein, for example, the Increasing the securing or anchoring effect the expansion element 6 can be introduced beyond the shown in Fig. 5 and 6 state deeper into the anchoring element 4 or withdrawn, so that a correspondingly larger expansion of the outer periphery of the anchoring element 4 to achieve an increased anchoring effect is possible ,
  • an anchoring element denoted by 11 which, in contrast to the embodiment according to FIGS. 1 to 6, is not provided with a longitudinal slot, but at its outer circumference partial areas of reduced diameter or reduced dimensions 12, which in turn prevent excessive frictional force during the drilling operation.
  • the partial regions of the anchoring element 11 which are different from the partial regions 12 are formed with an enlarged diameter or enlarged external dimensions relative to the drill bit 3.
  • the length of the anchoring elements 4 and 11 and their distance from the drill bit 3 and the expansion element 6 can be selected by the stop 7 according to the circumstances. Furthermore, it can be seen from the above representations that degraded material can be discharged through the formed between the anchoring element 4 and 11 and the outer periphery of the drill pipe 2 cavity or annulus 13 readily in a region behind the anchoring element 4 and 11, for which corresponding Passage opening are also provided in the region of the stopper 7.
  • a cooling or rinsing fluid can be discharged into the area of the drill bit 3.
  • a central channel 14 of the drill string 2 can also, in particular after a final completion of the well also a curable material, if necessary borrowed, in particular in the area of the drill bit 3 and the anchoring element 4 and 11 applied to further increase the anchoring effect become.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Earth Drilling (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour le forage, notamment pour le forage par percussion ou par roto-percussion, d'un trou dans le sol ou la roche, ainsi que pour la fixation d'un ancrage dans le trou, un trou de forage étant formé par une couronne de forage (3) montée sur un train de tiges de forage (2). Selon l'invention, le train de tiges de forage (2) est entouré, au niveau de la face arrière opposée à la surface de taille (5) de la couronne de forage (3), notamment à distance de la couronne de forage (3), d'un élément d'ancrage (4) dont la dimension extérieure dépasse au moins partiellement la circonférence du trou de forage produit par la couronne de forage (3). Cela permet d'assurer, de manière simple et fiable, un blocage de l'ancrage dans un trou de forage.
EP06741019A 2005-06-07 2006-05-30 Procede et dispositif pour le forage, notamment pour le forage par percussion ou par roto-percussion, d'un trou dans le sol ou la roche Active EP1888878B8 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200631122T SI1888878T1 (sl) 2005-06-07 2006-05-30 Postopek in naprava za vrtanje še zlasti udarnovrtanje ali vrtljivo udarno vrtanje luknje v tla ali kamnit material
PL06741019T PL1888878T3 (pl) 2005-06-07 2006-05-30 Sposób i urządzenie do wiercenia, zwłaszcza do udarowego i obrotowo-udarowego wiercenia otworu w gruncie lub materiale skalnym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0096305A AT501875B1 (de) 2005-06-07 2005-06-07 Verfahren und vorrichtung zum bohren, insbesondere schlag- oder drehschlagbohren eines lochs in boden- oder gesteinsmaterial
PCT/AT2006/000220 WO2006130889A1 (fr) 2005-06-07 2006-05-30 Procede et dispositif pour le forage, notamment pour le forage par percussion ou par roto-percussion, d'un trou dans le sol ou la roche

Publications (3)

Publication Number Publication Date
EP1888878A1 EP1888878A1 (fr) 2008-02-20
EP1888878B1 EP1888878B1 (fr) 2011-06-29
EP1888878B8 true EP1888878B8 (fr) 2012-02-22

Family

ID=36754094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06741019A Active EP1888878B8 (fr) 2005-06-07 2006-05-30 Procede et dispositif pour le forage, notamment pour le forage par percussion ou par roto-percussion, d'un trou dans le sol ou la roche

Country Status (15)

Country Link
US (1) US7874380B2 (fr)
EP (1) EP1888878B8 (fr)
JP (1) JP2008542594A (fr)
KR (1) KR20080021616A (fr)
CN (1) CN101189410A (fr)
AT (2) AT501875B1 (fr)
AU (1) AU2006255521B2 (fr)
CA (1) CA2609737C (fr)
DK (1) DK1888878T3 (fr)
ES (1) ES2369485T3 (fr)
PL (1) PL1888878T3 (fr)
PT (1) PT1888878E (fr)
SI (1) SI1888878T1 (fr)
WO (1) WO2006130889A1 (fr)
ZA (1) ZA200709811B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT505189B1 (de) * 2007-04-19 2009-01-15 Techmo Entw & Vertriebs Gmbh Vorrichtung zum herstellen eines bohrlochs in gesteinsmaterial
AT10289U1 (de) 2007-06-19 2008-12-15 Alwag Tunnelausbau Gmbh Verfahren und vorrichtung zum bohren eines loches in boden- oder gesteinsmaterial und ausbilden einer verankerung
AU2008288696B2 (en) * 2007-08-22 2015-07-16 DSI Underground Australia Pty Limited Friction bolt assembly
AT13162U1 (de) * 2012-04-12 2013-07-15 Dywidag Systems Int Gmbh Verfahren zum Bohren von Löchern in Boden- bzw. Gesteinsmaterial und zum Festlegen eines Ankers in einem Bohrloch sowie Vorrichtung hierfür
DE102012113053A1 (de) * 2012-12-21 2014-06-26 Thyssenkrupp Steel Europe Ag Verbindungsmittel mit Formgedächtnis
GB201513485D0 (en) * 2015-07-30 2015-09-16 Ihc Engineering Business Ltd Anchoring device and method
CA3098153A1 (fr) * 2018-05-03 2019-11-07 Epiroc Drilling Tools Ab Ancre pour roche hybride a auto-forage
CN108726400B (zh) * 2018-08-13 2024-09-24 山河智能特种装备有限公司 一种工程车用锚固机构

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US3837258A (en) * 1970-02-03 1974-09-24 C Williams Rock bolts
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EP0948701B1 (fr) 1996-11-12 2002-05-15 Techmo Entwicklungs- und Vertriebs GmbH Procede et dispositif pour forer et revetir en meme temps des trous
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Also Published As

Publication number Publication date
CA2609737A1 (fr) 2006-12-14
AU2006255521B2 (en) 2011-05-19
US7874380B2 (en) 2011-01-25
WO2006130889A1 (fr) 2006-12-14
SI1888878T1 (sl) 2011-11-30
EP1888878A1 (fr) 2008-02-20
DK1888878T3 (da) 2011-09-19
ZA200709811B (en) 2008-11-26
PL1888878T3 (pl) 2011-11-30
JP2008542594A (ja) 2008-11-27
CA2609737C (fr) 2012-09-25
ES2369485T3 (es) 2011-12-01
PT1888878E (pt) 2011-09-06
AT501875A1 (de) 2006-12-15
EP1888878B1 (fr) 2011-06-29
ATE514836T1 (de) 2011-07-15
AU2006255521A1 (en) 2006-12-14
KR20080021616A (ko) 2008-03-07
AT501875B1 (de) 2008-05-15
US20090114402A1 (en) 2009-05-07
CN101189410A (zh) 2008-05-28

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