EP1407115A1 - Assemblage d'une tige d'ancrage et d'un outil de forage - Google Patents

Assemblage d'une tige d'ancrage et d'un outil de forage

Info

Publication number
EP1407115A1
EP1407115A1 EP01274371A EP01274371A EP1407115A1 EP 1407115 A1 EP1407115 A1 EP 1407115A1 EP 01274371 A EP01274371 A EP 01274371A EP 01274371 A EP01274371 A EP 01274371A EP 1407115 A1 EP1407115 A1 EP 1407115A1
Authority
EP
European Patent Office
Prior art keywords
anchor rod
section
anchor
transition sleeve
anchoring rod
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
Application number
EP01274371A
Other languages
German (de)
English (en)
Other versions
EP1407115B1 (fr
Inventor
Hannes Papousek
Herbert Papousek
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.)
Atlas Copco Mai GmbH
Original Assignee
Atlas Copco Mai 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
Application filed by Atlas Copco Mai GmbH filed Critical Atlas Copco Mai GmbH
Publication of EP1407115A1 publication Critical patent/EP1407115A1/fr
Application granted granted Critical
Publication of EP1407115B1 publication Critical patent/EP1407115B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
    • 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
    • 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
    • E21D21/0053—Anchoring-bolts in the form of lost drilling rods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler
    • Y10T403/5733—Plural opposed sockets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler
    • Y10T403/5741—Separate screw or pin-type connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler
    • Y10T403/5746—Continuous thread
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/57—Distinct end coupler
    • Y10T403/5761—Interrupted periphery, e.g., split or segmental, etc.
    • Y10T403/5786—Split

Definitions

  • the invention relates to a connection between an anchor rod and the drilling device of a device for setting self-drilling injection anchors.
  • the anchor rods that make up the anchor system are connected to the drill head of a drilling rig. This connection is made via a transition sleeve into which one end of the anchor rod is screwed and which is coupled to the insertion end of the drilling device, for example by screwing on. A drill bit is screwed onto the front end of the first anchor rod. As the depth of the borehole progresses, the anchor rod is extended by screwing on connecting couplings and additional anchor rods until the total anchor length is reached.
  • the release of the anchor rod from the transition sleeve on the drilling device has proven to be problematic in the prior art.
  • the anchor rod becomes jammed in the transition sleeve that connects it to the drilling device, which leads to malfunctions, since a lot of force and time is required to loosen the screw connection between the anchor rod and the transition sleeve is.
  • the reason for the frequently occurring jamming is that the non-heat-treated anchor rods have a lower hardness than boring rods that are always used in tempered quality.
  • the transition sleeve which is also always remunerated the drill, as it is designed for multiple use, much harder than the anchor rods.
  • anchor rods From US 4,332,502 A it is known for anchor rods to be connected to one another by connecting couplings to form thread-free sections at their ends.
  • the anchor rods are connected to one another by connecting couplings which, in the area in which the anchor rods screwed into the connecting coupling abut one another with their unthreaded sections, have an inwardly projecting ring in which the unthreaded ends of the screws screwed into the transition sleeve Engage anchor rods.
  • the invention is based on the object of designing the end of anchor rods received in the transition sleeve on the drill so that the described jamming does not occur.
  • At least one end is the anchor rod according to the invention provided with a tapered section.
  • This section which is provided on the anchor rod at least at its end received in the transition sleeve of the drilling device (screwed into it), can have a cylindrical outer surface and in turn have a chamfer on the end face.
  • the inventive design of at least one end of the anchor rods results in a trouble-free loosening (unscrewing) of anchor rods from the transition sleeve, because when drilling anchors under the effect of the loads occurring during drilling, deformations of the end of an anchor rod received in the transition sleeve occur due to the free space between the inner surface of the transition sleeve and the smaller-diameter section of the end of the anchor rod cannot lead to the anchor rods being clamped in the transition sleeve.
  • the screwing of the connection couplings onto the end of the last anchor rod protruding from the borehole is also problem-free, because there is play between the tapered end of the anchor rod and the inner surface of the connection coupling even when the end of the anchor rod has been deformed ,
  • the advantage for the user of the connection according to the invention between the anchor rod and the drilling device is first of all that longer work interruptions are avoided, since the anchor rod can be easily detached from the transition sleeve, so that trouble-free operation is ensured.
  • the solution to the problem according to the invention (avoiding jamming between the transition sleeve and anchor rod) is of considerable importance since the removal of a fault at a greater height is not a problem represents an insignificant security risk.
  • FIG. 1 schematically shows a hammer drill during drilling
  • FIG. 2 shows one end of a known anchor rod
  • FIG. 3 shows the end of an anchor rod with a tapered end
  • FIG. 4 shows in section an end of an anchor rod screwed into a transition sleeve.
  • the drill hammer shown in FIG. 1 consists of a drilling device 1 which is advanced on a guide of the drilling mount 3 supported on the rock 2 in accordance with the drilling progress.
  • the drive provided for this is not shown.
  • an anchor rod 6 is screwed in via a transition sleeve 5, to which an anchor rod carrying a drill bit directly or, depending on the drilling progress, further anchor rods 6 are connected via connecting couplings 7.
  • a flushing liquid can be introduced into the anchor rods 6 and, after completion of the bore for fixing the anchor, a (hydraulically) setting medium which, after hardening, fixes the anchor, which consists of the corresponding number of anchor rods ⁇ , in the borehole ,
  • FIG. 2 shows one end of a known anchor rod 6, which has an external thread 9 due to the corresponding shaping of its wall.
  • the end of the known anchor rod is provided with a 45 ° chamfer 11.
  • At least one end is designed as shown in FIG. 3 and has a section 12 which has a diameter Ra which is reduced compared to the outer diameter (Rd) of the anchor rod 6 and which does not have an external thread 9.
  • the free end of section 12 of anchor rod 6 with reduced diameter Ra can also be provided with a 45 ° chamfer 11.
  • a corresponding configuration is possible for at least the end of the boring bar 8 screwed into the transition sleeve 5, but not mandatory, in particular if the boring bar 8 consists of hardened steel (like the transition sleeve 5).
  • section 12 with a reduced diameter is arbitrary in itself, but will often be cylindrical in shape.
  • section 15 can also be designed to taper conically towards the free end, the outer contour being inclined by no more than 20 degrees to the longitudinal axis of the anchor rod 6.
  • the clear cross section of the ring rib 20 is essentially the same size as the clear cross section of the anchor rods 8.
  • This free space 23 allows the tapered section 12 provided at the end of the anchor rod 6 to be plastically deformed without the anchor rod 6
  • the end face 24 of the anchor rod 6 bears against the lateral annular surface 25 of the annular rib 20.
  • the end 4 of the insertion end 4 of the drilling device 1 lies against the other annular surface 27 of the annular rib 20.
  • An anchor rod 6 for rock anchors (self-drilling injection anchor) has an external thread 9 for connecting the anchor rod 6 to a drill 1 via a transition sleeve 5.
  • the end of the anchor rod 6 screwed into the transition sleeve 5 has a section 12 with a smaller diameter than the outside diameter of the anchor rod 6 Diameter on.
  • the section 12 of the anchor rod 6 with a tapered diameter has a chamfer 11 at its free end. As a result, lies between the inner surface 22 of the transition sleeve 5 and the end of the anchor rod

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)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Earth Drilling (AREA)
  • Piles And Underground Anchors (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Dowels (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

Selon l'invention, une tige d'ancrage (6) pour des systèmes d'ancrage dans des roches (systèmes d'ancrage autoforeurs à injection) présente un filetage extérieur (9) servant à assembler la tige d'ancrage (6) avec un outil de forage (1) par l'intermédiaire d'un manchon-raccord (5). L'extrémité de la tige d'ancrage (6), vissée dans le manchon-raccord (5) présente une partie (12) présentant un diamètre inférieur au diamètre extérieur de la tige d'ancrage (6). Cette partie (12) de la tige d'ancrage (6) à diamètre réduit présente un biseau (11) à son extrémité libre. Un espace libre (23) est ainsi formé entre la surface intérieure du manchon-raccord (5) et l'extrémité de la tige d'ancrage (6) à diamètre réduit, ledit espace libre empêchant que la tige d'ancrage (6), même lorsque son extrémité est déformée plastiquement pendant le forage, soit coincée dans le manchon-raccord (5) de sorte que la tige d'ancrage (6) peut être dévissée du manchon-raccord (5) sans application d'une force importante.
EP01274371A 2001-07-19 2001-07-19 Assemblage d'une tige d'ancrage et d'un outil de forage Expired - Lifetime EP1407115B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AT2001/000247 WO2003008763A1 (fr) 2001-07-19 2001-07-19 Assemblage d'une tige d'ancrage et d'un outil de forage

Publications (2)

Publication Number Publication Date
EP1407115A1 true EP1407115A1 (fr) 2004-04-14
EP1407115B1 EP1407115B1 (fr) 2006-03-15

Family

ID=3619083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01274371A Expired - Lifetime EP1407115B1 (fr) 2001-07-19 2001-07-19 Assemblage d'une tige d'ancrage et d'un outil de forage

Country Status (17)

Country Link
US (1) US7044678B2 (fr)
EP (1) EP1407115B1 (fr)
JP (1) JP4570871B2 (fr)
CN (1) CN100378294C (fr)
AT (2) ATE320546T1 (fr)
CA (1) CA2454067C (fr)
CZ (1) CZ302129B6 (fr)
DE (1) DE50109210D1 (fr)
DK (1) DK1407115T3 (fr)
ES (1) ES2258061T3 (fr)
HK (1) HK1067401A1 (fr)
NO (1) NO333038B1 (fr)
PL (1) PL198229B1 (fr)
PT (1) PT1407115E (fr)
SI (1) SI1407115T1 (fr)
SK (1) SK287944B6 (fr)
WO (1) WO2003008763A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50006322D1 (de) 2000-03-16 2004-06-09 Naimer H L Schalter
DE10336040B4 (de) * 2003-08-01 2006-12-28 Hilti Ag Adapter für einen selbstbohrenden Gebirgsanker
AT9590U1 (de) * 2006-08-17 2007-12-15 Atlas Copco Mai Gmbh Reibrohranker und inflationsadapter für diesen
AT505072B1 (de) 2007-04-13 2009-02-15 Alwag Tunnelausbau Gmbh Verfahren und vorrichtung zum sichern eines mit einem aussengewinde versehenen gegenstands
WO2010085829A2 (fr) 2009-01-27 2010-08-05 Dywidag-Systems International Gmbh Dispositif pour coupler deux éléments tubulaires
ES2643739T3 (es) 2013-07-12 2017-11-24 Minova International Limited Anclaje para rocas deformable
DE102013012714A1 (de) * 2013-08-01 2015-02-05 Deilmann-Haniel Mining Systems Gmbh Einsteckende für ein Bohr- und Ankersetzgerät
AU2020222506A1 (en) * 2019-02-13 2021-10-07 Fci Holdings Delaware, Inc. Resin injection dolly

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537738A (en) * 1968-04-15 1970-11-03 Sandvikens Jernverks Ab Drill rod for long hole drilling in the ground
NL155335C (fr) * 1971-07-09 1900-01-01
NL7510249A (en) * 1975-08-29 1977-03-02 Nova Hut Klementa Gottwalda Na Gastight screwed pipe union - has mating cone faces of different angles in inner and outer members
US4332502A (en) * 1977-01-11 1982-06-01 Padley & Venables Limited Apparatus for use in drilling
JPS616488A (ja) * 1984-06-20 1986-01-13 日本鋼管株式会社 油井管用ネジ継手
SE8605408D0 (sv) * 1986-12-16 1986-12-16 Atlas Copco Ab Method of stabilizing a rock structure and stabilizer therefor
US5169183A (en) * 1987-05-12 1992-12-08 Diamant Boart Stratabit S.A. Threaded joint for drill rod elements
DE3910627A1 (de) 1989-04-01 1990-10-04 Ischebeck Friedrich Gmbh Verbindungselement
EP0552424A1 (fr) * 1992-01-24 1993-07-28 Erico International Corporation Jonction pour barres d'armature à résistance dynamique élevée et procédé de sa fabrication
CN2174566Y (zh) * 1993-08-30 1994-08-17 徐州矿务局第二机械厂 钢丝绳结构锚杆
ATE197488T1 (de) * 1994-11-25 2000-11-11 Mai Pump Austria Gmbh Kupplung für ankerstangen
US6073332A (en) * 1998-03-09 2000-06-13 Turner; William C. Corrosion resistant tubular system and method of manufacture thereof
JP2000008760A (ja) * 1998-06-26 2000-01-11 Boart Longyear Inc 直線穴あけシステム
US7108063B2 (en) * 2000-09-25 2006-09-19 Carstensen Kenneth J Connectable rod system for driving downhole pumps for oil field installations

Non-Patent Citations (1)

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Title
See references of WO03008763A1 *

Also Published As

Publication number Publication date
PT1407115E (pt) 2006-05-31
SI1407115T1 (sl) 2006-08-31
ES2258061T3 (es) 2006-08-16
DE50109210D1 (de) 2006-05-11
SK287944B6 (sk) 2012-06-04
US20040184872A1 (en) 2004-09-23
AT8246U2 (de) 2006-04-15
SK352004A3 (sk) 2005-08-04
PL367345A1 (en) 2005-02-21
CA2454067A1 (fr) 2003-01-30
DK1407115T3 (da) 2006-04-10
EP1407115B1 (fr) 2006-03-15
CA2454067C (fr) 2009-10-27
CN1535348A (zh) 2004-10-06
NO20040209L (no) 2004-03-15
CZ302129B6 (cs) 2010-11-03
PL198229B1 (pl) 2008-06-30
HK1067401A1 (en) 2005-04-08
AT8246U3 (de) 2010-02-15
ATE320546T1 (de) 2006-04-15
NO333038B1 (no) 2013-02-18
US7044678B2 (en) 2006-05-16
JP4570871B2 (ja) 2010-10-27
WO2003008763A1 (fr) 2003-01-30
CN100378294C (zh) 2008-04-02
JP2004522030A (ja) 2004-07-22
CZ200459A3 (cs) 2004-06-16

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