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EP0014426A1 - Ancre de roche - Google Patents

Ancre de roche Download PDF

Info

Publication number
EP0014426A1
EP0014426A1 EP80100454A EP80100454A EP0014426A1 EP 0014426 A1 EP0014426 A1 EP 0014426A1 EP 80100454 A EP80100454 A EP 80100454A EP 80100454 A EP80100454 A EP 80100454A EP 0014426 A1 EP0014426 A1 EP 0014426A1
Authority
EP
European Patent Office
Prior art keywords
tension
wedge
tension element
rock anchor
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.)
Granted
Application number
EP80100454A
Other languages
German (de)
English (en)
Other versions
EP0014426B1 (fr
Inventor
Friedrich Peter Dr. Brandstetter
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.)
Gebirgssicherung Gesmbh
Gebirgssicherung GmbH
Original Assignee
Gebirgssicherung Gesmbh
Gebirgssicherung 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 Gebirgssicherung Gesmbh, Gebirgssicherung GmbH filed Critical Gebirgssicherung Gesmbh
Priority to AT80100454T priority Critical patent/ATE8809T1/de
Publication of EP0014426A1 publication Critical patent/EP0014426A1/fr
Application granted granted Critical
Publication of EP0014426B1 publication Critical patent/EP0014426B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00—Setting anchoring-bolts
    • E21D20/02—Setting anchoring-bolts with provisions for grouting
    • 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
    • E21D21/008—Anchoring or tensioning means

Definitions

  • the invention relates to a rock anchor, comprising a tension element that can be inserted into a borehole and can be clamped therein, the outer end of which protrudes from the borehole can be tensioned against the mountains by means of a tension nut via an anchor plate.
  • the tension element consists of a steel tube, on the outer end of which a thread is cut for screwing on a tension nut. Glass fiber synthetic resin rods are used as reinforcement elements in the steel tube.
  • This rock bolt is fastened in a borehole using liquid synthetic resin; After the pressed-in synthetic resin has hardened, the entire anchor is stretched over the anchor plate by means of the tension nut against the mountains.
  • rock anchors have already proven themselves in practice because they can be relatively easily fixed in a borehole by means of the hardenable synthetic resin and can also be placed under tensile stress by means of the nut and the anchor plate, so that the mountains above are held securely.
  • the invention has for its object to provide a rock anchor, which consists of a few, prefabricated parts that can be assembled according to the requirements on site, without the injection of resin is essential to anchor in the mountains.
  • This object is achieved in that on the inner end of the pulling element inserted into the borehole is placed an expanding sleeve which is clawing in the borehole and which can be clamped to the inner end of the pulling element when the pulling nut rotates via a spreading wedge, and in that the tightening nut is screwed onto a threaded pulling sleeve which can be clamped to the outer end of the pulling element when the pulling nut rotates via pulling means.
  • Such a rock anchor has the great advantage that, depending on the respective conditions at the place of use, a smooth, tubular feed element, which does not have to have a thread for screwing on the lock nut, is cut to length, after which the spreading device consisting of expansion sleeve and expansion wedge is placed on the inner end and on the outside End the pulling device composed of the pulling sleeve, the pulling means, for example a pulling wedge, as well as pulling nut and anchor plate, are pushed on.
  • the rock anchor which can be assembled extremely quickly and economically, it has an excellent hold in the mountains because the expansion sleeve, which has barbs or the like on its outer circumference, firmly grips in the borehole.
  • the tension element is tubular and both ends of the tension element are conical extensible and each take on a cross wedge provided with an axially extending injection hole for filling material.
  • a hardenable synthetic resin can be injected through the cross wedge attached to the outer end, which can further improve the anchoring in the borehole.
  • the conically expandable ends of the tension element are incorporated in crosswise slots, the cross wedges being star-shaped and engaging in the slots with their arms.
  • This design of the cross wedges has the advantage that the material of the tension element cannot escape into the slots when there is a strong tensile load, as a result of which the safe functioning of the rock anchor would be impaired.
  • the traction means can consist of the conically widened end of the traction element and a paired conical bore of the traction sleeve which is at least part of its length.
  • This alternative has the advantage that the outside is cylindrical over its entire length and can therefore accommodate a very long thread.
  • the injection hole of the cross wedge arranged directly at the head of the rock anchor is exposed, so that easier operation is possible.
  • the tension element is a smooth GRP tube (glass fiber synthetic resin). That has the intent part that a very light and easy to transport material is available for the Zunelement, which can be easily cut to the required length at the place of use, without thereby reducing the tensile strength of the entire rock bolt.
  • a roughened GRP pipe can also be used.
  • the tension element is designed as a rod.
  • This embodiment of the invention is particularly useful when the rock bolt is to be subjected to particularly heavy loads.
  • the tension element has the shape of a rod, wedge shells are expediently placed on both ends of the tension element.
  • the rock bolt shown in Finures 1 to 3 consists of a tubular pulling element 10 made of GRP, on the outer end 12 of which a pulling device, generally designated 14, is placed, while the inner end 1 of which carries a soreizing device, designated 18.
  • a pulling device generally designated 14
  • the rock bolt With the help of the expanding device 18, the rock bolt is anchored in a drill hole, while the outer end 12 with the pulling device 14 partially protrudes out of the borehole
  • the expansion device 18 consists of an expansion sleeve 20 with a conical inner bore and an expansion wedge 22 with a conical outer surface.
  • the expansion wedge 22, which is preferably made of GRP, has a radially outwardly projecting flange 24 at its smaller diameter end, against which the expansion sleeve 20 can be supported axially.
  • the expansion sleeve 20 is provided on its outside with barbs 26 which can wedge in a borehole.
  • the pulling device 14 has a pulling sleeve 28 made of metal or GRP, the end 30 of which projects into the borehole and tapers conically. In the conical end 30, an existing wedge 32 made of GRP is inserted. A thread for receiving a tension nut 34 is rolled onto the cylindrical part of the tension sleeve 32, with the aid of which an anchor plate 36 can be pressed against the mountains.
  • Both the inner end 16 and the outer end 12 of the tension element 10 are cross-slotted (slots 38), so that an S p stimulus wedge 40 made of GRP can be pressed into each end, which has an axially extending injection bore 42.
  • the tubular tension element 10 is first cut to the required length, the slots 38 being subsequently made at both ends 12 and 16.
  • a wedge 40 is inserted into each of the ends 12 and 16 thus prepared, after the expansion device 18 has been placed on the inner end 16 and the pulling device 14 has been placed on the outer end 12.
  • the tie rod is inserted into a borehole and then braced.
  • the tension nut 34 is rotated so that the anchor plate 36 is pressed against the mountain.
  • the expansion sleeve 20 shifts, the resistance; Hook 26 find a hold in the borehole, relative to the expanding wedge 22 in the axial direction and widens - for this purpose, the inner end of the expanding sleeve 20 is slotted (slots 44) - until it has completely clawed into the borehole and no relative movement can take place.
  • the anchor plate 36 is now firmly pressed against the mountain, the tension sleeve 28 being seated firmly and immovably on the tubular tension element 10 by the tension wedge 32.
  • hardenable synthetic resin can then be injected through the injection bore 42 of the outer expansion wedge 40 up to a sealing ring 46; After hardening, the plastic additionally secures the rock bolt in the borehole.
  • the two expansion wedges 40 are star-shaped, the arms 48 formed thereby engaging in the slots 38 of the conically widened ends 12 to 16 of the tension element 10 and closing them.
  • the glass fiber of the tension element cannot escape into the slots 38 even in the case of larger stresses.
  • the pulling sleeve 28 made of GRP has a cylindrical outer shape, while its bore is flared outwards; the conically widened slotted end of the tension element 10 is printed against the conical inner wall of the bore with the aid of the cross wedge 40.
  • the cross wedge 40 with its injection hole 42 is easily accessible at the head of the rock anchor and is therefore more convenient to use.
  • an injection groove 50 is incorporated into the outside of the tension sleeve 28 and into the inside of the tension nut 34, which, when paired with one another, form a longitudinal bore.
  • This longitudinal hole if that is because of bad mountains properties should be necessary, hardenable synthetic resin is injected to fill the borehole.
  • This injection hole is particularly favorable when the mountains are anchored to the top because the synthetic resin can also easily get under the tension nut 34.
  • a rod-shaped tension element 10 is shown in a shortened form in FIG.
  • two wedge shells 52 and '54 are placed, the outer diameter of which tapers somewhat from top to bottom in the drawing.
  • FIG. 7 also shows corresponding cross sections through this embodiment of the invention at the respective upper and lower ends of the wedge shells that are attached.
  • FIG. 8 shows a cross wedge 40 which is provided for insertion into a tension element 10 in the form of a solid rod with corresponding slots arranged in a crosswise manner.
  • FIG. 9 partially shows a tension element 10 in the form of a solid rod with slots arranged in a cross shape, into which a cross wedge according to the embodiment of FIG. 8 is inserted.
  • the rock anchor designed according to the invention has the advantage that it can be set directly during propulsion and can be mechanically tensioned, and a backfilling with synthetic resin can be carried out later if required.
  • this rock bolt can be inserted into a so-called adhesive cartridge with the end of the tension element widened by the cross wedge, even without a mechanical expansion device, which cartridge was inserted beforehand into the borehole.
  • the anchor can be prestressed in this way and subsequently filled with synthetic resin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Piles And Underground Anchors (AREA)
  • Rock Bolts (AREA)
  • Dowels (AREA)
EP80100454A 1979-01-31 1980-01-29 Ancre de roche Expired EP0014426B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80100454T ATE8809T1 (de) 1979-01-31 1980-01-29 Gebirgsanker.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2903694 1979-01-31
DE19792903694 DE2903694A1 (de) 1979-01-31 1979-01-31 Gebirgsanker

Publications (2)

Publication Number Publication Date
EP0014426A1 true EP0014426A1 (fr) 1980-08-20
EP0014426B1 EP0014426B1 (fr) 1984-08-01

Family

ID=6061832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100454A Expired EP0014426B1 (fr) 1979-01-31 1980-01-29 Ancre de roche

Country Status (9)

Country Link
US (1) US4369003A (fr)
EP (1) EP0014426B1 (fr)
JP (1) JPS55105098A (fr)
AR (1) AR222520A1 (fr)
AT (1) ATE8809T1 (fr)
BR (1) BR8000563A (fr)
DE (2) DE2903694A1 (fr)
ES (1) ES488377A1 (fr)
ZA (1) ZA80209B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064652A3 (en) * 1981-05-09 1985-12-27 Bayer Ag Anchoring element for fibre-compound materials
WO1995019491A1 (fr) * 1994-01-12 1995-07-20 F. Willich Berg- Und Bautechnik Gmbh & Co. Dispositif d'ancrage dans la roche, en plastique arme fibres de verre, pouvant etre tendu
EP2186995A2 (fr) 2008-11-13 2010-05-19 HILTI Aktiengesellschaft Elément de fixation pour l'utilisation dans la construction minière ou de tunnels
AT511240B1 (de) * 2008-11-28 2016-03-15 Desimir Kitic Verfahren zum erstellen eines bauwerkes und mauerwerk-verankerungssystem
DE102020132950A1 (de) 2020-12-10 2022-06-15 Geobrugg Ag Korrosionsschutzvorrichtung, Korrosionsschutzsystem, korrosionsgeschütztes Böschungsstabilisierungssystem und Verfahren zur korrosionsgeschützten Verankerung eines geotechnischen Ankerelements

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI64224C (fi) * 1981-04-22 1983-10-10 Neste Oy Bergbult
JPS59130077A (ja) * 1983-01-14 1984-07-26 国土防災技術株式会社 アンカ−
DE3322346C1 (de) * 1983-06-22 1984-09-13 Klöckner-Becorit GmbH, 4620 Castrop-Rauxel Gebirgsanker
US4592178A (en) * 1985-04-09 1986-06-03 Lu Hsi H Ground anchor
CA1286129C (fr) * 1986-06-24 1991-07-16 Inco Limited Boulon d'ancrage dans le roc pris dans un materiau durci, et dispositif servant a son implantation
JPS6312563U (fr) * 1986-07-11 1988-01-27
EP0255392B1 (fr) * 1986-07-30 1991-05-22 Du Pont (Australia) Ltd.. Méthode et moyen de renforcement
DE3629365A1 (de) * 1986-08-29 1988-03-03 Hausherr & Soehne Rudolf Flexibler gebirgsanker
DE3902727A1 (de) * 1989-01-31 1990-08-02 Willich F Gmbh & Co Gfk-gebirgsklebeanker
NO900391L (no) * 1989-02-06 1990-08-07 Weidmann H Ag Fremgangsmaate, forankringselement og spennanordning til oppspenning av en stang.
JPH032099U (fr) * 1989-05-24 1991-01-10
US5253960A (en) * 1992-08-10 1993-10-19 Scott James J Cable attachable device to monitor roof loads or provide a yieldable support or a rigid roof support fixture
US5314268A (en) * 1993-01-13 1994-05-24 Jennmar Corporation Non-metallic reinforcing rod and method of use in supporting a rock formation
GB2278902B (en) * 1993-06-08 1996-01-03 Millfield Enterprises Limited End fixing apparatus
US5417521A (en) * 1993-08-16 1995-05-23 Scott Investment Partners Multiple cable rock anchor system
EP0659976A3 (fr) * 1993-12-23 1995-09-27 Rsc Mining Proprietary Limited Boulon d'ancrage.
AUPO220596A0 (en) * 1996-09-09 1996-10-03 Geosystems Cable bolt
KR100479358B1 (ko) * 2002-07-18 2005-04-06 주식회사 건정종합건축사사무소 지반 안정화용 장치 및 그를 이용한 지반 안정화공법
CN100365245C (zh) * 2003-11-11 2008-01-30 吴德兴 一种涨壳式锚杆
CN102206404B (zh) * 2003-12-17 2013-12-04 泰拉西米科股份有限公司 涂敷的采矿锚杆
US7648524B2 (en) * 2005-12-23 2010-01-19 Howmedica Osteonics Corp. Porous tendon anchor
CA2660562A1 (fr) * 2006-08-14 2008-02-21 Wmc Nominees Pty Limited Dispositif tensionneur
AU2007214343B2 (en) * 2007-08-31 2009-08-13 Sandvik Intellectual Property Ab Rock bolt with mechanical anchor
WO2010019971A1 (fr) * 2008-08-11 2010-02-18 Sandvik Mining And Construction Rsa (Pty) Ltd Câble d'ancre pour la roche
PE20120598A1 (es) * 2008-12-23 2012-06-17 Hani Sabri Mitri Perno de cable con manga
US10132343B2 (en) 2012-06-19 2018-11-20 Megalex Joint, Llc High tensile strength joint for connecting rods and fittings
US10895116B2 (en) 2012-06-19 2021-01-19 Megalex Joint, Llc Method for creating a high tensile strength joint for connecting rods and fittings
US11391312B2 (en) * 2012-06-19 2022-07-19 Megalex Joint, Llc Method for creating a high tensile strength joint for connecting rods and fittings
FI125339B (fi) * 2012-12-10 2015-08-31 Suomen Metallityö Oy Kallioankkuripultti
SE539285C2 (sv) * 2013-02-07 2017-06-20 Rock Solutions North AB Bergbult
CN105386446B (zh) * 2015-10-16 2017-05-10 山东科技大学 用于岩孔中的钢丝绳锚固器及其锚固方法
US10060809B1 (en) * 2016-10-27 2018-08-28 Larry C. Hoffman Friction stabilizer pull tester and method
CA2957748C (fr) 2017-02-13 2018-05-01 Lyle Kenneth Adams Joint de boulon a roche
CN113605951B (zh) * 2021-07-28 2023-09-08 中国铁路设计集团有限公司 一种浅埋隧道支护结构及其施工方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338128A (en) * 1965-08-30 1967-08-29 Raymond H Taylor Wedge-type eye bolt
US3493046A (en) * 1967-12-05 1970-02-03 Western Geophysical Co Securing device
US3505824A (en) * 1969-02-05 1970-04-14 Claude C White Roof support of underground mines and openings
FR2360748A1 (fr) * 1976-08-06 1978-03-03 Ici Ltd Renforcement de roches
US4160615A (en) * 1978-03-23 1979-07-10 The International Nickel Company, Inc. Cable rock anchor

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2180866A (en) * 1938-07-20 1939-11-21 John A Cryer Connector
US2442113A (en) * 1945-05-25 1948-05-25 Beijl Zako Sytse Tunnelling and like subterranean operations
US2525198A (en) * 1947-02-28 1950-10-10 Beijl Zako Sytse Bolt anchor
US2667037A (en) * 1949-08-24 1954-01-26 Edward M Thomas Suspension roof support
US2682152A (en) * 1950-04-15 1954-06-29 Bierer Joseph Method of and apparatus for reinforcing and supporting mine roofs and the like
US2879686A (en) * 1952-10-31 1959-03-31 Ohio Brass Co Anchor bolt having test rod to indicate tension changes
US2934935A (en) * 1956-01-20 1960-05-03 Holzmann Philipp Ag Cast tensioning head for anchoring tensioning members, preferably for prestressed concrete
US3226934A (en) * 1961-05-16 1966-01-04 C I M Consultants Ltd Rock bolts
US3306051A (en) * 1964-02-10 1967-02-28 Howlett Machine Works Rock bolt
US3311012A (en) * 1965-03-11 1967-03-28 Chester I Williams Pressure-actuated expanding anchor
FR1461377A (fr) * 1965-03-27 1966-02-25 Dispositif d'ancre pour rocher
US3837258A (en) * 1970-02-03 1974-09-24 C Williams Rock bolts
CH590983A5 (fr) * 1974-12-19 1977-08-31 Battelle Memorial Institute
DE2624559C2 (de) * 1976-06-01 1985-09-05 Gebirgssicherung GmbH, Salzburg Gebirgsanker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338128A (en) * 1965-08-30 1967-08-29 Raymond H Taylor Wedge-type eye bolt
US3493046A (en) * 1967-12-05 1970-02-03 Western Geophysical Co Securing device
US3505824A (en) * 1969-02-05 1970-04-14 Claude C White Roof support of underground mines and openings
FR2360748A1 (fr) * 1976-08-06 1978-03-03 Ici Ltd Renforcement de roches
US4160615A (en) * 1978-03-23 1979-07-10 The International Nickel Company, Inc. Cable rock anchor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064652A3 (en) * 1981-05-09 1985-12-27 Bayer Ag Anchoring element for fibre-compound materials
WO1995019491A1 (fr) * 1994-01-12 1995-07-20 F. Willich Berg- Und Bautechnik Gmbh & Co. Dispositif d'ancrage dans la roche, en plastique arme fibres de verre, pouvant etre tendu
EP2186995A2 (fr) 2008-11-13 2010-05-19 HILTI Aktiengesellschaft Elément de fixation pour l'utilisation dans la construction minière ou de tunnels
DE102008043702A1 (de) 2008-11-13 2010-05-20 Hilti Aktiengesellschaft Befestigungselement für den Einsatz im Berg- und Tunnelbau
AT511240B1 (de) * 2008-11-28 2016-03-15 Desimir Kitic Verfahren zum erstellen eines bauwerkes und mauerwerk-verankerungssystem
AT511240B8 (de) * 2008-11-28 2016-05-15 Desimir Kitic Verfahren zum erstellen eines bauwerkes und mauerwerk-verankerungssystem
DE102020132950A1 (de) 2020-12-10 2022-06-15 Geobrugg Ag Korrosionsschutzvorrichtung, Korrosionsschutzsystem, korrosionsgeschütztes Böschungsstabilisierungssystem und Verfahren zur korrosionsgeschützten Verankerung eines geotechnischen Ankerelements

Also Published As

Publication number Publication date
ZA80209B (en) 1980-12-31
ES488377A1 (es) 1980-10-01
DE2903694A1 (de) 1980-08-14
JPS55105098A (en) 1980-08-12
ATE8809T1 (de) 1984-08-15
AR222520A1 (es) 1981-05-29
EP0014426B1 (fr) 1984-08-01
BR8000563A (pt) 1980-10-14
DE3068758D1 (en) 1984-09-06
US4369003A (en) 1983-01-18

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