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WO1988002057A1 - Ancrage rigide combine extensible et profile - Google Patents

Ancrage rigide combine extensible et profile Download PDF

Info

Publication number
WO1988002057A1
WO1988002057A1 PCT/EP1986/000559 EP8600559W WO8802057A1 WO 1988002057 A1 WO1988002057 A1 WO 1988002057A1 EP 8600559 W EP8600559 W EP 8600559W WO 8802057 A1 WO8802057 A1 WO 8802057A1
Authority
WO
WIPO (PCT)
Prior art keywords
sections
borehole
anchor
section
tension member
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.)
Ceased
Application number
PCT/EP1986/000559
Other languages
German (de)
English (en)
Inventor
Peter Stephan
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband 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
Priority to DE19853531393 priority Critical patent/DE3531393C1/de
Application filed by Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Priority to PCT/EP1986/000559 priority patent/WO1988002057A1/fr
Publication of WO1988002057A1 publication Critical patent/WO1988002057A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • E21D21/0026—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 invention relates to a rock anchor for securing routes and spaces in mining and tunneling
  • the tension member made of ductile steel can be fixed at least in the deepest borehole by means of an adhesive and whose end protruding from the borehole mouth he can be braced against the mountains by means of an anchor plate and a screw connection , wherein the tension member has at least a part of its length a so-called free play section, which shields by an adhesive material filling the tension member surface with respect to the borehole, e.g. B.
  • tubular separation layer is formed, and the tension member of the anchor, with the exception of its formed as a formula, known mixing tip, is surrounded over its entire length by a two-section cladding tube, the deepest in the borehole section with the anchor cable member and the other cladding tube section is non-positively connected (according to patent 34 17 252 ⁇ .
  • the rock anchor of the type mentioned at the outset is a combined rigid profile and expansion anchor, which initially acts as a rigid anchor with high tensile strength after the adhesive has hardened, and which only gives up the reinforcing effect and takes on the function of an expansion anchor after a predeterminable load-bearing capacity has been exceeded.
  • the invention has for its object when using a combined rigid profile and expansion anchor, in particular in the stratified carbon mountains, to avoid the above-mentioned drop in force and to ensure in a simple manner that the breakage or tearing of the cladding tube does not occur at the mountain opening, but takes place at the predetermined breaking point.
  • the cladding tube consists of at least three sections which are non-positively connected to each other via predetermined breaking points, only the sections arranged in the region of the borehole mouth and the deepest of the borehole being provided with a permanent adhesive profile.
  • the friction in such a section can be increased by providing this section with a separating layer of glued-on quartz sand that shields the adhesive material.
  • This coating is released when the cladding tube is elongated accordingly, this friction component again contributing to the compensation of the characteristic curve.
  • the jacket tube made of steel has a lower elongation at break than the tension member of the armature.
  • the technical progress of the invention can be seen in particular in the fact that the mode of action is better adapted to the stratified carbon mountains.
  • the anchor 1 made of a flexible material glued into a borehole 3 in the mountains 4 by means of an adhesive 8 is at the bottom of the borehole with a mixing tip 2 designed as a form-locking element or a comparable one serving as an abutment with respect to the Wegl tube 5 Element.
  • the armature 1 and also the sleeve tube 5 surrounding it over the entire length is braced via an anchor plate 11 and a spherical washer 13 by means of a nut 12, a spacer sleeve 14 being arranged between the nut 12 and the spherical washer 13.
  • the end of the armature 1 outside the borehole 3 is provided with a short thread 15 in order not to allow any notch stresses to occur in the area of the possible anchor plate bending. Furthermore, the armature 1 has a square 16 for assembly using the conventional setting devices.
  • the cladding tube 5 surrounding the armature 1 over the entire length in the exemplary embodiment shown consists of three sections 6, 7 and 17. Sections 6 and 7 or 7 and 17 are each non-positively connected, for example via welding points 10, which represent broken bricks, The section facing the deepest hole

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)
  • Dowels (AREA)

Abstract

Des ancrages de roche destinés à consolider des galeries et des espaces lors du creusement de tunnels et dans les mines sont réalisés en acier ductile et se fixent à l'aide d'une colle au plus profond du trou de forage. L'extrémité dépassant de l'embouchure du trou peut être bloquée par rapport à la roche au moyen d'une plaque d'ancrage et d'un assemblage à vis. Pour former un ancrage rigide combiné extensible et profilé, le tube de gainage (5) est constitué d'au moins trois tronçons (6, 7, 17) reliés les uns aux autres par liaison de force via des points de rupture. Seuls les tronçons (6, 17) disposés dans les régions de l'embouchure du trou et de la partie la plus profonde de celui-ci sont munis d'un profilage adhésif (18) permanent.
PCT/EP1986/000559 1985-09-03 1986-09-22 Ancrage rigide combine extensible et profile Ceased WO1988002057A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19853531393 DE3531393C1 (de) 1985-09-03 1985-09-03 Kombinierter starrer Profil- und Dehnanker
PCT/EP1986/000559 WO1988002057A1 (fr) 1986-09-22 1986-09-22 Ancrage rigide combine extensible et profile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1986/000559 WO1988002057A1 (fr) 1986-09-22 1986-09-22 Ancrage rigide combine extensible et profile

Publications (1)

Publication Number Publication Date
WO1988002057A1 true WO1988002057A1 (fr) 1988-03-24

Family

ID=8165141

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1986/000559 Ceased WO1988002057A1 (fr) 1985-09-03 1986-09-22 Ancrage rigide combine extensible et profile

Country Status (1)

Country Link
WO (1) WO1988002057A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995878A3 (fr) * 1998-10-20 2003-10-29 VORSPANN-TECHNIK Ges.m.b.H. & Co. KG Boulon d'ancrage et puits de forage avec ledit boulon posé
US11739368B2 (en) 2014-10-29 2023-08-29 10X Genomics, Inc. Methods and compositions for targeted nucleic acid sequencing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158538A (en) * 1984-05-10 1985-11-13 Bergwerksverband Gmbh Initially rigid then extensible rock anchor
DE3531393C1 (de) * 1985-09-03 1986-06-05 Bergwerksverband Gmbh, 4300 Essen Kombinierter starrer Profil- und Dehnanker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2158538A (en) * 1984-05-10 1985-11-13 Bergwerksverband Gmbh Initially rigid then extensible rock anchor
DE3531393C1 (de) * 1985-09-03 1986-06-05 Bergwerksverband Gmbh, 4300 Essen Kombinierter starrer Profil- und Dehnanker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995878A3 (fr) * 1998-10-20 2003-10-29 VORSPANN-TECHNIK Ges.m.b.H. & Co. KG Boulon d'ancrage et puits de forage avec ledit boulon posé
US11739368B2 (en) 2014-10-29 2023-08-29 10X Genomics, Inc. Methods and compositions for targeted nucleic acid sequencing

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