EP0196451B1 - Zugglied für einen Felsbolzen oder dergleichen - Google Patents

Zugglied für einen Felsbolzen oder dergleichen Download PDF

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Publication number
EP0196451B1
EP0196451B1 EP86102426A EP86102426A EP0196451B1 EP 0196451 B1 EP0196451 B1 EP 0196451B1 EP 86102426 A EP86102426 A EP 86102426A EP 86102426 A EP86102426 A EP 86102426A EP 0196451 B1 EP0196451 B1 EP 0196451B1
Authority
EP
European Patent Office
Prior art keywords
tension member
member according
steel wires
central cavity
synthetic resin
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.)
Expired
Application number
EP86102426A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0196451A1 (de
Inventor
& Widmann Aktiengesellschaft Dyckerhoff
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.)
Walter Bau AG
Original Assignee
Dyckerhoff and Widmann AG
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 Dyckerhoff and Widmann AG filed Critical Dyckerhoff and Widmann AG
Priority to AT86102426T priority Critical patent/ATE36893T1/de
Publication of EP0196451A1 publication Critical patent/EP0196451A1/de
Application granted granted Critical
Publication of EP0196451B1 publication Critical patent/EP0196451B1/de
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
    • 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
    • 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
    • E21D21/006—Anchoring-bolts made of cables or wires

Definitions

  • the invention relates to a tension member consisting of a bundle of steel wires for a rock bolt or the like, and to a method for its production.
  • Rock bolts essentially have the task of securing rock packs against displacements as early as possible when opening cavities in a naturally occurring mountain range with fissures.
  • a typical type of stress of such rock bolts is a combined tensile and shear stress with large shear paths.
  • Tension members that are used as rock bolts must therefore have a high work capacity in order to be able to take part in the large bends.
  • the stiffness of a solid cross-section, as z. B. has a steel rod is an obstacle.
  • tubular tension members made of steel with a thin wall, the z. B. be pressed by hydraulic pressure against the borehole wall and transmit the force by friction.
  • Tubular tension members of this type have an even lower shear resistance than rod-shaped anchors; however, they allow a greater shear path since the cavity of the borehole remains essentially free.
  • Tubular tension members have no corrosion protection and cannot be produced in any length. Anchoring bodies cannot be attached to their smooth outer surface.
  • a rock anchor is also known, the tension member of which has a defined flexibility zone in the middle part, in which the tension member made of stainless, austenitic steel has a smaller cross section than in the end parts (DE-C-3 320 460).
  • the tension member can also consist of a bundle of steel wires. In order to prevent the tension member from bonding with the adhesive filling the borehole in this compliance zone, it is surrounded by a coating there.
  • a thread is provided at the air-side end of the tension member for anchoring by means of a nut.
  • the invention has for its object to provide a tension member for a rock bolt, which can be produced economically in any length, has a high work capacity to be able to take strong bends and also gives the possibility of anchoring body, for. B. in the form of nuts or the like.
  • this object is achieved in a tension member consisting of a bundle of steel wires in that the steel wires while leaving a central cavity in a tubular body made of a hardening, plastic material, for. B. synthetic resin, are embedded and the tubular body has a profile on its outer surface.
  • the steel wires are expediently arranged radially symmetrically in the tubular body, which itself advantageously has a circular cross section.
  • the central cavity also expediently has a circular cross section.
  • the profiling of the tension member on its outer surface which also on an envelope of the tubular body, for. B. can be formed from a thermoplastic resin, is used, in particular if it is designed as a screw thread, for fixing the tension member on the head by means of an appropriately designed anchoring body.
  • a bracing in relation to the surface of the underground cavity is generally sufficient, since only a force-fit connection to this surface is usually required for the rock bolt to be effective.
  • the central cavity of the tension member if it is still open after it has been installed in the borehole, allows control of possible shear movements or the insertion of measuring probes. It can also be used to inject a hardening material into the borehole or to vent if hardening material is injected in another way. It is expedient if at least in partial areas of the length of the tension member along at least one surface line from the central cavity outward openings are provided, which can be valve-shaped.
  • the profiling of the outer surface of the tension member can also only extend over partial regions of its length, while regions with a smooth outer surface are provided between the regions provided with a profiling.
  • the areas provided with the profiling are only as long as required for anchoring the occurring forces and a smooth area is arranged between each of the profiled areas in which no bond can form between the tension member and the hardening material filling the remaining part of the borehole, moreover allows a greater steel length to be activated when the tension member is bent as a result of shear stress. This corresponds in a special way to the requirements for rock bolts, which are supposed to hold smaller layers of layers together, for which purpose intermediate anchors separated from each other by bondless areas are particularly favorable.
  • a tension member according to the invention also provides excellent protection against corrosion, since the steel wires are completely embedded in synthetic resin; this is especially true when it is surrounded by a covering. Tension members of this type can therefore also be used as permanent anchors and thus promote the path to a single-shell expansion of the underground cavity.
  • the invention relates to a method for producing such a tension member.
  • an inner tube made of thermoplastic synthetic resin, e.g. B. PE.
  • the steel wires are then fed along its outer surface and pressed into its surface. These steel wires are then through a plastic, hardening mass, for. B. encased a polyester resin.
  • B. from a thermoplastic material, such as PVC, existing covering applied.
  • the particular advantage of the method is that it is possible in this way to produce a tension member for a rock bolt in a continuous process, which can be cut to any length and, if the profile is formed on its outer surface as a screw thread, also screwing one Anchoring body allowed at any point.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Pens And Brushes (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Dowels (AREA)
EP86102426A 1985-03-05 1986-02-25 Zugglied für einen Felsbolzen oder dergleichen Expired EP0196451B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86102426T ATE36893T1 (de) 1985-03-05 1986-02-25 Zugglied fuer einen felsbolzen oder dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853507732 DE3507732A1 (de) 1985-03-05 1985-03-05 Zugglied fuer einen felsbolzen oder dergleichen
DE3507732 1985-03-05

Publications (2)

Publication Number Publication Date
EP0196451A1 EP0196451A1 (de) 1986-10-08
EP0196451B1 true EP0196451B1 (de) 1988-08-31

Family

ID=6264238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102426A Expired EP0196451B1 (de) 1985-03-05 1986-02-25 Zugglied für einen Felsbolzen oder dergleichen

Country Status (9)

Country Link
US (1) US4664555A (enrdf_load_stackoverflow)
EP (1) EP0196451B1 (enrdf_load_stackoverflow)
JP (1) JPS61207800A (enrdf_load_stackoverflow)
AT (1) ATE36893T1 (enrdf_load_stackoverflow)
AU (1) AU565512B2 (enrdf_load_stackoverflow)
CA (1) CA1270129A (enrdf_load_stackoverflow)
DE (1) DE3507732A1 (enrdf_load_stackoverflow)
NO (1) NO860728L (enrdf_load_stackoverflow)
ZA (1) ZA861450B (enrdf_load_stackoverflow)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620972A1 (de) * 1986-06-23 1988-01-14 Hilti Ag Mittels einer aushaertenden masse verankerbare ankerstange
GB2194828A (en) * 1986-08-22 1988-03-16 Australian Coal Ind Res Anchoring dowel
DE3629365A1 (de) * 1986-08-29 1988-03-03 Hausherr & Soehne Rudolf Flexibler gebirgsanker
DE3713291A1 (de) * 1987-04-18 1988-11-03 Dyckerhoff & Widmann Ag Gebirgsanker zur sicherung von strecken und raeumen im berg- und tunnelbau
DE3905128C2 (de) * 1988-07-06 1998-07-09 Willich F Gmbh & Co Vollverklebbarer Seilanker
AU4867890A (en) * 1989-01-23 1990-07-26 Inco Limited Hollow cable bolt
DE3919103A1 (de) * 1989-06-10 1990-12-13 Ruhrkohle Ag Seilankerschonende ankerplatte
DE4032682C2 (de) * 1990-10-15 1994-03-17 Gd Anker Gmbh & Co Kg Gebirgsanker
JP2501780B2 (ja) * 1991-05-22 1996-05-29 建設基礎エンジニアリング株式会社 アンカ―
JPH0733664B2 (ja) * 1991-06-10 1995-04-12 建設基礎エンジニアリング株式会社 アンカー
DE4203740C2 (de) * 1992-02-09 1996-07-11 Dyckerhoff & Widmann Ag Verfahren zum Herstellen eines Ankerelementes aus einer Litze aus verdrillten Stahldrähten
US5387060A (en) * 1993-03-26 1995-02-07 F. M. Locotos Equipment & Design Co. Tubular mining bolt
DE9317336U1 (de) * 1993-11-12 1994-01-27 Buddenberg, Heinrich, 47447 Moers Injektionsseilanker
IT1275231B (it) * 1995-02-09 1997-07-31 Sireg S P A Soc It Di Ricerca Dispositivo per l'armatura il consolidamento e la stabilizzazione del terreno particolarmente atto ad impedire frane o deformazioni del fronte di scavo in gallerie o scavi in trincea
EP0762445B1 (en) 1995-08-25 2000-07-26 Denso Corporation Slant winding electromagnetic coil and ignition coil for internal combustion engine using same
FR2752328B1 (fr) * 1996-08-07 1998-10-09 Sagem Bobinage, notamment pour circuit haute tension de bobine d'allumage
EP0827164A3 (en) * 1996-08-31 1998-11-18 Toyo Denso Kabushiki Kaisha Engine igniting coil device and method of winding an ignition coil
AUPO220596A0 (en) * 1996-09-09 1996-10-03 Geosystems Cable bolt
FR2775011B1 (fr) * 1998-02-16 2000-03-31 Spie Batignolles Construction Procede d'ancrage direct ou indirect d'equipements sur un radier existant et dispositifs pour sa mise en oeuvre
AT408473B (de) 1998-10-20 2001-12-27 Vorspann Technik Gmbh Anker sowie bohrloch mit gesetztem anker
DE10100715A1 (de) * 2001-01-10 2002-07-11 Wolfgang Habe Zuganker zum Stabilisieren eines Wandkörpers
CA2549683C (en) 2003-12-17 2014-05-27 Terrasimco Inc. Coated mining bolt
CA2622806C (en) * 2007-02-28 2016-05-03 Jennmar Corporation Improved cable bolt
US7566189B2 (en) * 2007-04-19 2009-07-28 Jennmar Corporation Mine roof bolt with resin control surface
DE102008014700A1 (de) * 2008-03-18 2009-09-24 Dywidag-Systems International Gmbh Korrosionsgeschützter Selbstbohranker sowie Verfahren zu dessen Herstellung
MX346834B (es) 2010-06-24 2017-04-03 Nucor Corp Un perno de anclaje roscado de ajuste tensor.
US9010165B2 (en) 2011-01-18 2015-04-21 Nucor Corporation Threaded rebar manufacturing process and system
CN102400699A (zh) * 2011-11-18 2012-04-04 山东科技大学 竹节式高强锚杆
CN102587943B (zh) * 2012-03-19 2014-03-05 河南理工大学 一种顶板离层区树脂锚固剂快速安装方法
US10941657B2 (en) * 2016-07-12 2021-03-09 Fci Holdings Delaware, Inc. Corrosion resistant yieldable bolt
CN108746466B (zh) * 2018-06-27 2020-04-14 芜湖金宇紧固件有限公司 一种提高螺钉整体韧性的加工工艺
CN109098742B (zh) * 2018-08-20 2019-11-08 中国矿业大学 一种单锚集注式全长锚固的钢丝束及其支护方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184567B (de) * 1961-02-24 1964-12-31 Jerome Bernard Clifford Dumont Wellschlauch aus flexiblem Werkstoff
US3477474A (en) * 1967-03-22 1969-11-11 American Chain & Cable Co Wire reinforced conduit
FR1539176A (fr) * 1967-08-03 1968-09-13 Soletanche Dispositif de tirant destiné à être ancré dans le sol
US3653217A (en) * 1970-08-03 1972-04-04 Chester I Williams Rock bolt rod configuration
DE2041526C3 (de) * 1970-08-21 1980-06-04 Dyckerhoff & Widmann Ag, 8000 Muenchen Zugglied für einen Verpreßanker
US3842608A (en) * 1972-11-28 1974-10-22 L Turzillo Method and means for installing load bearing piles in situ
SE387700B (sv) * 1973-03-09 1976-09-13 A I Lundkvist Perforerat hylsformigt organ for anvendande vid s.k. bergfestning medelst i borrhal ingjuten bult
US4196755A (en) * 1977-09-19 1980-04-08 Automation Industries, Inc. Reinforced flexible duct with integral molded liner
DE2749068A1 (de) * 1977-11-02 1979-05-03 Gebirgssicherung Gmbh Gebirgsanker
DE2856735A1 (de) * 1978-12-29 1980-07-10 Hilti Ag Zweikomponenten-klebepatrone
AT364921B (de) * 1979-03-05 1981-11-25 Edarco Europ Dev & Res Zuganker zur verankerung von bauteilen in einem grundkoerper
US4302131A (en) * 1979-06-18 1981-11-24 Fosroc International Limited Anchor elements
US4410476A (en) * 1980-10-20 1983-10-18 The United States Of America As Represented By The Secretary Of The Navy Method for making radially compliant line array hose
DE3115062C2 (de) * 1981-04-14 1986-07-10 Stump Bohr Gmbh, 8045 Ismaning Daueranker
JPS599643Y2 (ja) * 1981-07-15 1984-03-27 川澄化学工業株式会社 輸液バツグ
DE3146587C2 (de) * 1981-11-25 1984-11-08 Bergwerksverband Gmbh, 4300 Essen Gebirksanker
DE3320460C1 (de) * 1983-06-07 1984-10-18 Thyssen Industrie Ag, 4300 Essen Nachgiebiger Gebirgsanker
DE3322346C1 (de) * 1983-06-22 1984-09-13 Klöckner-Becorit GmbH, 4620 Castrop-Rauxel Gebirgsanker
US4564315A (en) * 1983-07-05 1986-01-14 Rozanc Richard C Method for anchoring a bolt in a rock-like structure

Also Published As

Publication number Publication date
CA1270129A (en) 1990-06-12
EP0196451A1 (de) 1986-10-08
ATE36893T1 (de) 1988-09-15
US4664555A (en) 1987-05-12
AU5424986A (en) 1986-09-11
NO860728L (no) 1986-09-08
DE3507732A1 (de) 1986-09-18
DE3507732C2 (enrdf_load_stackoverflow) 1987-12-10
AU565512B2 (en) 1987-09-17
JPH0519640B2 (enrdf_load_stackoverflow) 1993-03-17
ZA861450B (en) 1986-10-29
JPS61207800A (ja) 1986-09-16

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