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EP0006515B1 - Procédé d'ancrage de tiges de renfort - Google Patents

Procédé d'ancrage de tiges de renfort Download PDF

Info

Publication number
EP0006515B1
EP0006515B1 EP79101865A EP79101865A EP0006515B1 EP 0006515 B1 EP0006515 B1 EP 0006515B1 EP 79101865 A EP79101865 A EP 79101865A EP 79101865 A EP79101865 A EP 79101865A EP 0006515 B1 EP0006515 B1 EP 0006515B1
Authority
EP
European Patent Office
Prior art keywords
borehole
tension member
packer
process according
anchor
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
EP79101865A
Other languages
German (de)
English (en)
Other versions
EP0006515A1 (fr
Inventor
Lothar Dr. Preis
Rudolf Dipl.-Ing. Schmidt
Eberhard Born
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.)
STRABAG BAU - AG
Bayer AG
Original Assignee
STRABAG BAU - AG
Bayer 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 STRABAG BAU - AG, Bayer AG filed Critical STRABAG BAU - AG
Priority to AT79101865T priority Critical patent/ATE154T1/de
Publication of EP0006515A1 publication Critical patent/EP0006515A1/fr
Application granted granted Critical
Publication of EP0006515B1 publication Critical patent/EP0006515B1/fr
Expired legal-status Critical Current

Links

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
    • E21D21/0093—Accessories
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • 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
    • E21D20/025—Grouting with organic components, e.g. resin

Definitions

  • the invention relates to a method for anchoring a prestressable and re-tensionable anchor, the tension member of which is glued in a borehole by reaction resin.
  • the object of the invention is a simple method for anchoring tension members in rock.
  • the tension members should consist of high-tensile materials, and the anchors must therefore be able to withstand high loads.
  • a rational fastening of the tension members in the borehole above all a clear, secure fastening should also be possible overhead.
  • the object is achieved in that the tension member is pushed into the borehole with a packer which is as far from the end of the tension member located in the borehole as the bond length is intended, and the reaction resin is injected deep into the borehole behind the packer .
  • the packer on the tension member ensures that the predetermined bond length can be adhered to exactly. Regardless of the borehole conditions, the cavity in the area of the bond is completely filled. Since the injected reaction mixture is generated outside the borehole under controllable conditions, any desired composition can be produced with sufficient homogeneity.
  • a wide range is available as a reaction resin, especially epoxy, polyester and polyurethane resins.
  • the packer in the anchoring area of the tension member can be designed differently; possible embodiments are cuff and bellows.
  • a bellows can be fixed on the tension member by means of a clamp or clamp connection. When the tension member is inserted into the borehole, the bellows can be pressed onto the anchor profile with a stocking-like film or a stocking-like coarse-mesh fabric in such a way that insertion is not hindered by the packer.
  • These foils or fabrics can be removed at predetermined breaking points with a rip cord or rendered ineffective. The bellows then relaxes again and tries to return to its original shape.
  • the bellows can also be set up more easily by briefly pulling back the tension member.
  • the bellows fixes the tension member in the center of the borehole; the anchor is thus largely secured in the hanging against falling out and moving.
  • the bellows is already capable of absorbing high compression pressures.
  • the material of the bellows should be so elastic that the bellows stand up automatically within the ring gap after relief; it preferably consists of thermoplastics, elastomers or polyurethanes, which can also be foamed.
  • the inner bellows rings or the bellows spiral can be constructed on a stocking-like, coarse-mesh, elastic fabric that has a high elasticity.
  • the packer can also be slipped onto the anchor in the form of a sleeve.
  • the cuff can be made of cellulose, e.g. B. in the form of corrugated cardboard or fleece.
  • the foaming of montmorrillonite soaked in isocyanate or a hydrophilic fast-setting gypsum can result in a significant increase in volume.
  • the annular gap between the anchor and the borehole wall is thereby completely filled for a short time, so that the anchor is fixed again and sliding or slipping in the hanging area is excluded.
  • the moisture-packed sleeve - the packer - is pushed onto the anchor and fixed.
  • the packaging is loosened, the cuff soaked with water and the anchor set. This reaction can be controlled within wide limits according to the start time and expiry.
  • Both steel and fiber-reinforced plastics are possible as the material of the tension members. Since the anchor rods do not have to be screwed into the drill holes, thin, low-torsion tension members made of unidirectionally reinforced glass fiber plastics can also be used.
  • the packers can be coated with a stabilizer, so that the hardening of the injected resins that touch the packer immediately takes place very quickly, thus creating a wall for the further resin injected deepest in the borehole.
  • epoxy resins that are cured with aliphatic polyamines can be strongly activated with tertiary amines, acids, acid chlorides.
  • the rapid curing of polyurethane resins can be greatly accelerated, for example, with tertiary amines, silaamines, alkali hydroxides or organic metal compounds.
  • Polyester resin systems can also be activated with amine and metal salt accelerators.
  • Anchors with tension members are then preferably produced which, in a known manner (cf. FR-A-2 096 653), consist of glass fiber reinforced plastics. These anchors are characterized by simple handling and high resistance to corrosion and can easily be destroyed again in the course of subsequent construction work. Because of the comparatively low modulus of elasticity, larger expansion paths are required for the pretension, but the loss of clamping force is correspondingly less than with steel. Because of the lower modulus of elasticity, it is possible to install long-length anchors without coupling joints even in confined spaces. Preferred areas of application for the anchoring according to the invention are temporary and permanent anchors for securing mountains and for securing expansion in coal and ore mining.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Paleontology (AREA)
  • Piles And Underground Anchors (AREA)
  • Rock Bolts (AREA)
  • Joining Of Building Structures In Genera (AREA)

Claims (7)

1. Procédé d'ancrage d'une ancre pouvant être mise sous tension avant et après, dont l'organe de traction est collé dans un trou de forage par une résine réactive, caractérisé en ce que l'organe de traction est inséré dans le trou de forage avec un emballage distant de l'extrémité de l'organe de traction se trouvant dans le trou de forage de la longueur de collage prévue, et en ce que la résine réactive est injectée de l'arrière de l'emballage dans la partie la plus profonde du trou de forage
2. Procédé selon la revendication 1, caractérisé en ce que par un raccordement à pince ou à agrafe on fixe sur l'organe de traction en tant qu'emballage un soufflet qui, lors de l'introduction de l'organe de traction dans le trou de forage, est pressé avec une feuille en forme de bas ou un tissu à grandes mailles en forme de bas sur le profil de l'ancre, puis, une fois à l'état inséré, en ce que la feuille ou le tissu est rendu inopérant.
3. Procédé selon la revendication 1, caractérisé en ce qu'en tant qu'emballage est glissé et fixé sur l'organe de traction une manchette préparée, emballée de manière étanche à l'humidité, en ce que par imprégnation avec de l'eau un moussage débordant de la préparation est déclenché et en ce que l'organe de traction est directement introduit dans le trou de forage où la fente annulaire entre l'ancre et la paroi du trou de forage est complètement remplie par l'accroissement du volume.
4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'on insère des emballages enduits d'un stabilisateur et en ce que les résines injectées qui entrent directement en contact avec l'emballage durcissent à fond à cet endroit d'une manière particulièrement rapide.
5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'on utilise en tant qu'organe de traction une matière plastique renforcée par des fibres de verre.
6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que par l'intermédiaire d'un boyau introduit supplémentairement avec l'organe de traction dans le trou de forage, qui s'étend jusqu'à l'arrière de l'emballage, on injecte la résine réactive.
7. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'on injecte la résine réactive par l'intérieur des organes de traction.
EP79101865A 1978-06-22 1979-06-11 Procédé d'ancrage de tiges de renfort Expired EP0006515B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79101865T ATE154T1 (de) 1978-06-22 1979-06-11 Verfahren zur verankerung von zuggliedern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2827327 1978-06-22
DE19782827327 DE2827327A1 (de) 1978-06-22 1978-06-22 Verankerung von zuggliedern

Publications (2)

Publication Number Publication Date
EP0006515A1 EP0006515A1 (fr) 1980-01-09
EP0006515B1 true EP0006515B1 (fr) 1981-08-12

Family

ID=6042408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101865A Expired EP0006515B1 (fr) 1978-06-22 1979-06-11 Procédé d'ancrage de tiges de renfort

Country Status (5)

Country Link
US (2) US4443132A (fr)
EP (1) EP0006515B1 (fr)
JP (1) JPS557395A (fr)
AT (1) ATE154T1 (fr)
DE (2) DE2827327A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211822A1 (de) * 1982-03-31 1983-10-13 Glötzl, Gesellschaft für Baumeßtechnik mbH, 7512 Rheinstetten Extensometer
US5082399A (en) * 1988-08-08 1992-01-21 Jennmar Corporation Mine roof anchor having adjustable resin retaining washer and expansion shell assembly with friction reducing means
US4865489A (en) * 1988-08-08 1989-09-12 Jennmar Corporation Mine roof anchor having adjustable resin retaining washer
US5076733A (en) * 1990-05-04 1991-12-31 Jennmar Corporation Mine roof anchor assembly having an expansion shell assembly with a friction reducing means
NO170994C (no) * 1990-09-19 1993-01-13 Sinvent As Forankringsbolt
US5718292A (en) * 1996-07-15 1998-02-17 Halliburton Company Inflation packer method and apparatus
US6896063B2 (en) * 2003-04-07 2005-05-24 Shell Oil Company Methods of using downhole polymer plug
NO325898B1 (no) * 2005-09-15 2008-08-11 M I Swaco Norge As Skilleanordning
CN102367736A (zh) * 2011-07-19 2012-03-07 辽宁兰特科技发展有限公司 使用聚氨酯发泡袋全长封堵锚杆与锚索钻孔自由段
KR101175521B1 (ko) 2012-02-06 2012-08-21 김윤호 가압식 쏘일 네일링장치 및 공법
US9284795B2 (en) * 2012-08-28 2016-03-15 Halliburton Energy Services, Inc. Riser displacement and cleaning systems and methods of use
US11933062B2 (en) 2019-10-29 2024-03-19 Philip John Elpers Vibration damping anchoring system
FR3141485B1 (fr) * 2022-10-27 2025-01-31 Sncf Reseau Bouchon d’obturation d’un forage d’un tirant ou clou d’ancrage, kit d’obturation comprenant un tel bouchon d’obturation et procédé d’obturation d’un forage a l’aide d’un tel kit

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921463A (en) * 1952-08-20 1960-01-19 Goldfein Solomon Concrete structural element reinforced with glass fibers
BE544161A (fr) * 1955-03-24
US3108443A (en) * 1959-07-07 1963-10-29 Schucrmann Fritz Method of fixing anchor bolts in the drill holes
CH406081A (de) * 1962-07-30 1966-01-15 Swissboring Schweizerische Tie Verfahren zum Festhalten von Ankern in Bohrlöchern von Locker- und Festerdreich
US3252514A (en) * 1963-03-19 1966-05-24 Joy Robert Method for producing subterranean watertight seals
US3316797A (en) * 1964-01-29 1967-05-02 Chester I Williams Rock bolt with conduit
US3306051A (en) * 1964-02-10 1967-02-28 Howlett Machine Works Rock bolt
NL6509176A (fr) * 1964-10-12 1966-04-13
GB1137851A (en) * 1966-01-04 1968-12-27 Bauer Karlheinz Improvements in and relating to tie anchors in the earth
FR1539176A (fr) * 1967-08-03 1968-09-13 Soletanche Dispositif de tirant destiné à être ancré dans le sol
GB1266152A (fr) * 1968-05-24 1972-03-08
US3698196A (en) * 1970-03-04 1972-10-17 Bergwerksverband Gmbh Method for reinforcing loose rock and coal
BE795928A (fr) * 1970-04-27 1973-06-18 Celtite Sa Perfectionnements aux tiges de scellement
GB1384177A (en) * 1972-06-05 1975-02-19 Exchem Holdings Method of and reinforcing elements for stabilisation of rock
DE2236457A1 (de) * 1972-07-25 1974-02-07 Hinteregger Ohg R U A Verfahren zur herstellung eines verbundverbaus als gebirgssicherung im unteroder uebertagebau
US3861155A (en) * 1972-12-05 1975-01-21 Atomic Energy Commission Pumpable rockbolt method
GB1435126A (en) * 1973-06-05 1976-05-12 Coal Industry Patents Ltd Strata reinforcing dowel members
US4069677A (en) * 1975-06-20 1978-01-24 Kabushiki Kaisha Nitto Tekuno Group Anchor and method for constructing same
US4051681A (en) * 1975-10-06 1977-10-04 Lee William Yaros Unitary roof bolt assembly
GB1506897A (en) * 1975-11-05 1978-04-12 Ici Ltd Method of securing fixing elements in rock
AT344117B (de) * 1976-01-29 1978-07-10 Gd Anker Gmbh & Co Kg Verfahren zum setzen eines gebirgsankers sowie schlauch und verankerungselement zur durchfuehrung des verfahrens
DE2624559C2 (de) * 1976-06-01 1985-09-05 Gebirgssicherung GmbH, Salzburg Gebirgsanker
US4137970A (en) * 1977-04-20 1979-02-06 The Dow Chemical Company Packer with chemically activated sealing member and method of use thereof
JPS5457059A (en) * 1977-09-30 1979-05-08 Kubota Ltd Rock bolt
US4140428A (en) * 1978-03-06 1979-02-20 Shakespeare Company Tie rod support for mine

Also Published As

Publication number Publication date
JPS641640B2 (fr) 1989-01-12
JPS557395A (en) 1980-01-19
ATE154T1 (de) 1981-09-15
DE2827327A1 (de) 1980-01-10
DE2960626D1 (en) 1981-11-12
US4443132A (en) 1984-04-17
US4501516A (en) 1985-02-26
EP0006515A1 (fr) 1980-01-09

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