EP2171210A1 - Procédé et dispositif pour percer un trou dans le sol ou dans un matériau rocheux et pour former un ancrage - Google Patents

Procédé et dispositif pour percer un trou dans le sol ou dans un matériau rocheux et pour former un ancrage

Info

Publication number
EP2171210A1
EP2171210A1 EP08756829A EP08756829A EP2171210A1 EP 2171210 A1 EP2171210 A1 EP 2171210A1 EP 08756829 A EP08756829 A EP 08756829A EP 08756829 A EP08756829 A EP 08756829A EP 2171210 A1 EP2171210 A1 EP 2171210A1
Authority
EP
European Patent Office
Prior art keywords
borehole
drill string
expansion
drilling
drill
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.)
Withdrawn
Application number
EP08756829A
Other languages
German (de)
English (en)
Inventor
Karl BÖHM
Walter Karpellus
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 Austria
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
Publication of EP2171210A1 publication Critical patent/EP2171210A1/fr
Withdrawn legal-status Critical Current

Links

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
    • E21B10/00—Drill bits
    • E21B10/36—Percussion drill bits
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube

Definitions

  • the present invention relates to a method for drilling, in particular percussion or rotary impact drilling, a hole in soil or rock material and forming an anchor in the hole, wherein a borehole is formed by a drill bit mounted on a drill string, as well as a device for Drilling, in particular percussion or rotary impact drilling, a hole in soil or rock material and forming an anchor in the hole, wherein a drill bit is mounted on a drill pipe for forming the borehole.
  • the drill pipe can be formed on its outer circumference with additional ribs and grooves, so that a fate of the drill string in the borehole and a subsequent backfilling a correspondingly good anchor effect can be achieved.
  • it is known to remove the drill with the drill string from the well followed by an anchor into the well for example US 4,305,687 A, US 4,380,407 A, CH 476 129 A , WO 94/05900 A, DE 916 286 C, US Pat. No. 4,516,883 A, EP 0 354 760 A, AT 339 239 B and WO 2005/040556 A.
  • Drilling device together with the drill pipe and a subsequent introduction of the anchoring device is only feasible in comparatively firm soil or rock, in which it must be ensured that, for example during the drilling process or after removing the drilling tool and before the final introduction of the anchoring device material breaks into the wellbore, so that the wellbore would be blocked, whereby an introduction of the anchor device is no longer possible.
  • packers on the outer circumference of a drill string of a drilling apparatus which allow expansion over a short portion after completion of the hole in engagement with the borehole wall and thus counteract removal or removal of the drill string from the borehole.
  • a reliable anchoring effect in particular when providing a plurality of side by side anchors, for stabilizing surrounding soil or rock material can not be achieved with such packers, so that optionally provide additional means for anchoring, such as the application of hardening material would.
  • the present invention aims to avoid the problems of the aforementioned prior art and to provide a method and a device of the type mentioned above, wherein immediately after completion of a well reliable anchoring with reduced time and simple construction is possible, wherein In particular, a removal of a drilling device and separate and subsequent introduction of an anchoring device can be dispensed with.
  • a method of the type mentioned is essentially characterized in that after completion of the borehole, anchoring is formed by at least one expansion element mounted on the circumference of the drill string, which is brought, in particular expanded, into a material penetrating or abutting the borehole.
  • an anchorage is formed by at least one mounted on the circumference of the drill string spreader after completion of the well, it is ensured that the addition of providing a separate anchoring according to the prior art additional and time-consuming process steps of removing the drilling device from the produced or completed wellbore and a subsequent introduction and anchoring or bracing a separate Ankervor- direction can be dispensed with, so that even if loose material surrounding the well immediate and reliable anchoring is possible without, for example, at least partial penetration of material to fear in the borehole during the removal of the drilling device and the subsequent introduction of the anchor device.
  • the at least one expansion element provision is made for the at least one expansion element to be widened into a position or position penetrating the borehole, so that during the drilling process no obstruction or impairment in the production of the borehole is provided by the provided, at least one expandable expansion element it is to be feared that, after completion of the borehole, the at least one expansion element can be brought into abutment against the surrounding material or into a penetrating position with correspondingly loose, surrounding material, in particular can be expanded.
  • Such an expandable expansion element may be arranged relatively close to the drill bit to directly behind the drill bit to achieve a correspondingly secure anchoring effect.
  • the at least one expansion element in an oriented opposite to a Bohrvortriebsraum layer is expanded into the material surrounding the wellbore.
  • the at least one expansion element by an action by a coupled to the drill string element during a rotational movement of the drill string against rotation for Training the borehole is placed in the expanded position.
  • the at least one expansion element is expanded by a relative movement along the longitudinal axis of the drill string relative to a non-displaceably mounted on the drill string in the axial direction stop element, as corresponds to a further preferred embodiment of the method according to the invention ,
  • a device of the type initially mentioned is substantially characterized in that at least one expansion element is mounted on the outer circumference of the drill string and, after completion of the drill hole, penetrates or abuts the material surrounding the bore hole Location or
  • the at least one expansion element can be expanded in a position which penetrates the material surrounding the borehole, counter to a drilling advancing direction after completion of the borehole.
  • this makes it possible, in particular, to provide an increasing anchoring effect against forces which act in the direction or in the sense of pulling out the anchor from the borehole.
  • the at least one expandable expansion element from the penetrated into the surrounding material layer or adjacent layer can be removed again, so that continued without hindrance by the at least one expansion element of the drilling and the Depth of the borehole can be increased.
  • the at least one expansion element by a rotational movement of the drill string against rotation for forming the borehole in which is expandable into the material surrounding the borehole penetrating layer.
  • the at least one spreading element formed on a cooperating with the drill string, sleeve-like element thread during a rotational movement of the drill string against the drilling direction in the material surrounding the hole material penetrating position is expandable, as corresponds to a further preferred embodiment of the device according to the invention.
  • the at least one expansion element starts from a position substantially adjacent to the outer circumference of the drill string during the drilling operation in the position surrounding the borehole Material penetrating movement is at least partially elastically deformed.
  • the at least one expandable expansion element at its end facing the stop element with a bevel or Profiling is formed, which cooperates with a particular complementary bevel or profiling on the stop element.
  • a uniform distribution of an anchoring effect over the circumference of the drill string is also inventively preferably proposed that a plurality of expandable expansion elements is arranged distributed substantially uniformly over the circumference of the drill string.
  • a plurality of expandable spreading elements be arranged at different distances from one another the drill bit is provided on the circumference of the drill string, as corresponds to a further preferred embodiment of the device according to the invention.
  • the at least one expansion element during the drilling process by an additional retaining element in the is secured substantially at the drill pipe adjacent position.
  • Drill rod mounted bushing is provided, which can be brought to expand the at least one expansion element in a disengaged from the toothing with the drill bit or with an element coupled to the drill bit position, as corresponds to a further preferred embodiment of the device according to the invention.
  • a socket or tooth socket can be adapted to the forces to be introduced during the drilling process as well as during the expansion process correspondingly solid and constructively simple.
  • linear guide is guided on the drill pipe and / or coupled to the drill bit element, as corresponds to a further preferred embodiment of the device according to the invention.
  • a drilling operation is carried out by making a rotational movement of the drill string in the original direction of rotation to form the borehole. If such a further drilling operation is to be reliably prevented and, if appropriate, a reliable anchoring of the at least one expansion element without possibility of loosening thereof is to be provided, it is proposed according to a preferred embodiment that at least for prevention of rotational movement in the direction of the rotational movement for formation the bore hole mounted on the drill pipe, socket or sleeve-like elements are provided, which are formed on mutually facing end faces with mutually complementary elevations or profiles.
  • FIG. 1 shows a partial longitudinal section through an apparatus according to the invention for carrying out the method according to the invention during the drilling operation, wherein at least one expansion element is essentially in contact with the drill pipe;
  • 2 shows, in a representation similar to FIG. 1, the device according to the invention for carrying out the method according to the invention, wherein the at least one spreading element is widened into the material surrounding the borehole;
  • FIG. 3 shows a partial longitudinal section through a modified embodiment of a device according to the invention for carrying out the method according to the invention in a representation similar to FIG. 1, in which case a barrier is provided in particular to carry out further rotational movements;
  • Fig. 4 in an exploded view of individual elements of the embodiment of FIG. 3, which are provided to achieve the turnstile and surround the drill string.
  • a drill string is generally designated by 1, which in particular has a corrugated or thread-like shape on its outer surface, in order subsequently to serve as an anchor rod after completion of the drilling operation.
  • a transmission of a rotary movement of the anchor rod or drill pipe 1 which is transmitted via a non-illustrated drive device outside of the designated hole 2, via a face 3 of a coupled with the drill string 1, sleeve-like Elements 4, wherein the end face 3 cooperates with a bushing or toothed bushing 5, which has an outer toothing 6 which is coupled to an element or driver 8 coupled to the drill bit 7, so that a rotational movement of the drill string 1 via the toothed bushing 5 on the driver
  • At least one expansion element 12 which can be widened subsequently, essentially bears against the outer contour of the drill pipe or anchor rod 1, so that no impairment or obstruction of the drilling process by the at least one expandable expansion element 12 takes place during the drilling process.
  • a central axis of the drill string 1 and thus the entire drilling apparatus is denoted by 13.
  • the drill head or the drill bit 7 is pressed against the borehole interior in accordance with the boring advancing direction and the arrow 14, whereupon the drill string 1 is subjected to a rotational movement counter to the drive direction for carrying out the drilling operation.
  • the sleeve-like element 4 which is coupled to the drill string or anchor rod 1, has a thread 16 on its outer surface which, after reversing the direction of rotation of the drill pipe 1, causes the complementary thread 17 to have at least one expandable element or expansion element 12 against the Bohrvortriebsraum, which coincides with the pressing direction 14 of the drill head 7 in Fig. 2, is moved along the outer surface of the drill string 1, as indicated by the arrow 18 tet.
  • a substantially linear movement of the at least one expandable expansion element 12 is also a linear guide 19, 20 on the outer surface of the expansion element 12 and in which the expansion element 12 provided in particular during the drilling operation covering portion 21 of the driver 8.
  • a stop 23 on the outer circumference of the drill string or anchor rod 1 is also provided at a distance from the mounting of the expansion element 12.
  • the expansion element 12 has a bevel or profiling 24, which with a substantially complementary bevel or Profiling 25 of the stop element 23 cooperates, so that by the linear movement of the spreader 12 corresponding to the arrow 18 by the rotational movement on the cooperating threads 16 and 17, a widening and penetration of the spreader 12 and in particular the tip 26 takes place in the surrounding material 22.
  • an elastically deformable region 28 of the expansion element 12 is furthermore provided.
  • the at least one expandable expansion element 12 against the Bohrvortriebsraum which is indicated by the arrow 14, penetrates into the surrounding material 22 and comes into contact with this, is ensures that at an action of forces in the direction of arrow 18, which indicates a pull-out of the drill string or anchor rod 1, the at least one expandable spreader 12 penetrates deeper into the surrounding material 22 or more firmly comes into contact with the borehole wall 2 so as to provide increased forces against undressing.
  • the drill pipe 1 is in turn coupled to the drill bit 7 and the driver 8 and the drilling process can be continued, at the same time by the orientation of the cooperating threads 16 and 17, the spreader 12 in the in FIG. 1 shown position is withdrawn and thus does not hinder or impede further drilling.
  • a plurality of spreading elements 12 can be distributed or provided substantially uniformly over the circumference of the drill string 1.
  • a securing ring 29 is also indicated in Fig. 1, which during the drilling process, for example, a plurality of evenly distributed over the circumference spreading elements 12 holds substantially in contact with the drill pipe 1.
  • a plurality of spreading elements 12 are distributed at different, axial distances from the drill bit 7 and, conveniently, substantially evenly distributed over the circumference of the drill string 1 . is provided.
  • an anchor rod formed by a drill pipe 1 which, as will be discussed below, is provided with an external thread, not shown, wherein the anchor rod or the drill pipe 1 a turn designated 7 drill bit for forming the borehole 2 is applied.
  • a socket 30 is provided which with a cooperates with the element 4 comparable bushing 31 to transmit a rotational movement to a driver 32, which subsequently drives the drill bit 7 to a rotary motion.
  • a driver 32 which subsequently drives the drill bit 7 to a rotary motion.
  • a further sleeve-like or sleeve-like element 33 cooperating with the drill bit 7 is provided, wherein both the drill bit 7 and the sleeve-like element 33 have elevations or profilings 34 and 35, respectively which, during the drilling process, slide over one another similar to a ratchet and thus allow a rotational movement or drilling advance movement, while a locking movement of the drill bit 7 against the drilling direction by the additionally provided contact pressure via a spring 36 causes a rotation of the anchor rod or drill pipe 1. is acting.
  • the bushes or sleeves 30 and 31 are provided with respective surveys or profilings 37 and 38 complementary to one another, which likewise effect a block when a rotational movement is reversed.
  • an additional sleeve-like element 39 coupled to the element 32 is provided which is coupled via a further sleeve-like element or sleeve 40 arranged inside it, wherein both the element 39 and the element 40 undergo a reverse rotational movement interact with the 41 designated spreading element.
  • the sleeve or sleeve-shaped expansion element 41 is formed with a plurality of longitudinally extending slots 42, which against a rotational movement to form the borehole over mutually complementary inclined surfaces upon application of the drill string 1 43 and 44 both of the expansion element 41 and a stop element 45 cooperate and allow expansion of the individual expansion elements 41 'in an expanded position against the Bohrvortriebsraum.
  • the sleeve or bush-like elements 39, 40 and the sleeve-like or sleeve-like element 41 also formed each with mutually complementary elevations or profiles 46, 47 and 48, which cause according to the intended orientation a turnstile.
  • the element 40 in the element 39 longitudinally displaceable, but rotatably mounted, so that taking into account the profiling or elevations or serrations 46, 47 and 48 in the event that during the expansion of the spreading 41 'the element 40 of the element 39 exits, the respective face serrations or profiling 47 and 48 cause a turnstile of the individual elements, so that by providing the respective serrations or profilings a lock on the achieved position of the spreading 41 'can be achieved.

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

Abstract

L'invention concerne un procédé et un dispositif utilisés pour percer un trou de forage (2), de préférence par perçage à percussion ou par perçage rotopercutant, dans le sol ou dans un matériau rocheux et pour former un ancrage dans ledit trou de forage (2). Selon l'invention, un trou de forage (2) est formé par une couronne à diamants (7) montée sur un train de tiges (1). Une fois le trou de forage (2) terminé, il est prévu de former un ancrage au moyen d'au moins un élément écarteur (12) monté sur la périphérie du train de tiges (1), ledit élément écarteur étant placé dans une position dans laquelle il pénètre dans le matériau (22) entourant le trou de forage (2) ou bien dans laquelle il repose sur ledit matériau, ledit élément étant notamment écarté, ce qui permet d'obtenir un ancrage fiable dès que le trou de forage (2) est terminé.
EP08756829A 2007-06-19 2008-06-17 Procédé et dispositif pour percer un trou dans le sol ou dans un matériau rocheux et pour former un ancrage Withdrawn EP2171210A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0038107U AT10289U1 (de) 2007-06-19 2007-06-19 Verfahren und vorrichtung zum bohren eines loches in boden- oder gesteinsmaterial und ausbilden einer verankerung
PCT/AT2008/000219 WO2008154669A1 (fr) 2007-06-19 2008-06-17 Procédé et dispositif pour percer un trou dans le sol ou dans un matériau rocheux et pour former un ancrage

Publications (1)

Publication Number Publication Date
EP2171210A1 true EP2171210A1 (fr) 2010-04-07

Family

ID=39830326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08756829A Withdrawn EP2171210A1 (fr) 2007-06-19 2008-06-17 Procédé et dispositif pour percer un trou dans le sol ou dans un matériau rocheux et pour former un ancrage

Country Status (5)

Country Link
US (1) US20100282513A1 (fr)
EP (1) EP2171210A1 (fr)
AT (1) AT10289U1 (fr)
CA (1) CA2691198A1 (fr)
WO (1) WO2008154669A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT13292U1 (de) * 2012-07-06 2013-10-15 Dywidag Systems Int Gmbh Verfahren und Vorrichtung zum Ausbilden von Bohrlöchern und Festlegen einer Verankerung in dem Bohrloch

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DE916286C (de) 1951-11-10 1954-08-09 Gutehoffnungshuette Sterkrade Mehrteiliger Gebirgsanker fuer den Untertagebetrieb im Bergbau
US3388029A (en) 1965-01-19 1968-06-11 Monsanto Co Dimensionally stabilized polyamide yarns and rubber products reinforced therewith
DE2431113A1 (de) 1974-06-28 1976-01-15 Takechi Komusho Kk Verfahren und vorrichtung zum einsetzen eines ankers
FR2277971A1 (fr) 1974-07-11 1976-02-06 Cocentall Ateliers Carspach Sa Boulon d'ancrage perfectionne
NL167869C (nl) * 1978-10-10 1982-02-16 Estel Hoogovens Bv Walskoppeling.
US4305687A (en) 1979-01-26 1981-12-15 Jack Parker Anchoring system for rock bolts
US4380407A (en) 1981-07-27 1983-04-19 Waiamea Company, Inc. Dual thrust anchor shell assembly
US4516883A (en) * 1983-04-01 1985-05-14 Die-Matic Corporation Mine roof bolt mounting assembly
US4592178A (en) * 1985-04-09 1986-06-03 Lu Hsi H Ground anchor
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NO176069C (no) 1992-09-09 1999-06-25 Irsta Stolindustri As Anordning for forankring og gysing av bergbolt
US5649789A (en) * 1993-03-16 1997-07-22 Cutincoal Pty Limited Integrated drilling and rock bolting apparatus
AU676034B2 (en) 1993-04-16 1997-02-27 Abtrov Pty Limited Integrated drilling and rock bolting apparatus
ATE217681T1 (de) 1996-11-12 2002-06-15 Techmo Entw & Vertriebs Gmbh Verfahren und einrichtung zum gleichzeitigen bohren und auskleiden von löchern
DE19721857A1 (de) 1997-05-26 1998-12-03 Fischer Artur Werke Gmbh Spreizanker
AT408248B (de) 1997-06-18 2001-09-25 Techmo Entw & Vertriebs Gmbh Verfahren und vorrichtung zum bohren von löchern
AT409785B (de) 1999-08-06 2002-11-25 Techmo Entw & Vertriebs Gmbh Verfahren zum festlegen eines spreizankers sowie spreizanker
CN1898456A (zh) 2003-10-27 2007-01-17 阿特拉斯·科普柯·马伊有限公司 具有弹性膨胀套管的锚定装置
AT501979B1 (de) 2005-05-27 2009-05-15 Karpellus Walter Dipl Ing Verfahren und vorrichtung zum bohren, insbesondere schlag- oder drehschlagbohren, eines loches in boden- oder gesteinsmaterial
AT501875B1 (de) 2005-06-07 2008-05-15 Alwag Tunnelausbau Gmbh Verfahren und vorrichtung zum bohren, insbesondere schlag- oder drehschlagbohren eines lochs in boden- oder gesteinsmaterial

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Title
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Also Published As

Publication number Publication date
AT10289U1 (de) 2008-12-15
WO2008154669A1 (fr) 2008-12-24
US20100282513A1 (en) 2010-11-11
CA2691198A1 (fr) 2008-12-24

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