US3699687A - Arrangements for anchoring supporting pins or bolts - Google Patents

Arrangements for anchoring supporting pins or bolts Download PDF

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Publication number
US3699687A
US3699687A US8914A US3699687DA US3699687A US 3699687 A US3699687 A US 3699687A US 8914 A US8914 A US 8914A US 3699687D A US3699687D A US 3699687DA US 3699687 A US3699687 A US 3699687A
Authority
US
United States
Prior art keywords
pin
resin
envelope
capsule
catalyst
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 - Lifetime
Application number
US8914A
Other languages
English (en)
Inventor
Andre Bourland
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.)
Celtite SA
Sa D'explosifs Ind-Celtite
Original Assignee
Celtite SA
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 claimed from FR6903015A external-priority patent/FR2034130A1/fr
Priority claimed from FR6940901A external-priority patent/FR2030706A5/fr
Application filed by Celtite SA filed Critical Celtite SA
Application granted granted Critical
Publication of US3699687A publication Critical patent/US3699687A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E21D20/025—Grouting with organic components, e.g. resin
    • E21D20/026—Cartridges; Grouting charges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/14—Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
    • F16B13/141—Fixing plugs in holes by the use of settable material
    • F16B13/143—Fixing plugs in holes by the use of settable material using frangible cartridges or capsules containing the setting components

Definitions

  • ABSTRACT [30] Foreign Application Priority Data
  • a device is provided for use in anchoring a support pin in a hole adapted to accommodate the same.
  • the 1969 France "6903015 device comprises a hollow elongated element of open 1969 France? "694.0901 work construction and made of a friable material. This element contains a charge which is adapted to (g1.
  • pins For many years supporting pins or bolts, hereinafter referred to as pins, have been used to brace rocky walls both in mines and public works, the pins being sealed in place by a cement or synthetic resin.
  • the resin added to the materials required for polymerization may be injected into the base of a hole pierced in the rock or in the wall to be braced. It may also be inserted into the hole, contained in a suitable holder having one or more compartments which are destroyed when the pin is inserted in the hole, the components, viz. the resin, filler and accelerator on the one hand, and hardener on the other hand, being mixed by rotation of the pin itself.
  • the invention consists more particularly in using, in order to contain the cement compound, a tubular cartridge, preferably round in section, of a suitable length, and formed by a perforated tube forming a net or wire netting of a friable material such that, when the pin is introduced, the cement components are intermixed and this net is reduced to fragments of small size also mixing with the cement during hardening in a homogenous manner, and contributing to its adhesion to the walls of the receiving bored hole.
  • the friable material can be a synthetic resin such as polystyrene or polyvinyl chloride.
  • this tube is used in combination with a charge within a plastic sheath such as described hereinbefore.
  • a sheath when it breaks, does not cause the introduction of barriers and destroying the adhesion'of the cement with the wall of the hole.
  • the resin itself is simultaneously introduced into the aforementioned tube, usually added to a small quantity of accelerator of the polyester type, having the necessary products for polymerization (hardening catalyst, usually benzoyl peroxide), and a filler considered as inert (dolomite, talc.) and to cause the suitable mixing of these products when the pin to be sealed, is introduced.
  • hardening catalyst usually benzoyl peroxide
  • a filler considered as inert dolomite, talc.
  • the charge elements instead of being grouped in concentric zones, namely in an axial rod formed from the catalyst itself, then an annular area formed by a mixture of the resin, the accelerator and the inert filler, the whole usually being held in a sheath made of a supple plastic material and lodged in the rigid elongated tube made of a friable material, are introduced into this latter but in the form of individual separate quantities, each into a section of the supple sheath and alternatively, lengthwise, an amount of pure resin (excluding the accelerator), then an amount of the mixture of the catalyst and the inert filler, then a quantity of the pure resin and so on.
  • the resin is introduced in a pure form (without accelerator) and not previously mixed with the inert filler which is mixed with the catalyst.
  • the products are separated from each other in th sealed supple sheaths.
  • the quantities of the different materials are placed end to end and not concentrically.
  • this arrangement improves the storage and sealing properties.
  • This double advantage results from the fact that the resin is in a pure state without the inert filler which accompanies it in the prior systems.
  • such an inert filler is not usually completely free of impurities so that when it is mixed may be stored in advance, instead of preparing them on site.
  • the sealing quality is improved in a manner corresponding to the best quality of the resin.
  • the alternate quantities may be of any size, the final mixture being all the better in proportion as the quantities are short and greater in number.
  • This advantage may be elaborated upon even further if the composition of the quantities is allowed to vary along the same charge, which was impossible with the former concentric charges. This becomes useful for example in the case where very long pins have to be sealed, e.g. of a length of 6 to 8 meters, which must be immediately fixed at their inner end, but on the contrary only progressively fixed over the remainder of their length, without the danger of undesirable tensions arising.
  • the invention therefore, relates by way of particular embodiment to the new industrial product which forms a sealing charge of the usual type defined hereinbefore and wherein, moreover, the distribution of the quantities of accelerator is such that the behavior of the charge is different along the various regions of its length.
  • FIG. 1 shows in perspective a perforated tube according to the invention
  • FIG. 2 shows in axial section the same tube containing a charge without a plastic sheath
  • FIG. 2a shows a modification of the arrangement of FIG. 2
  • FIG. 3 shows the charge in place in the hole for receiving the pin
  • FIGS. 4 and 5 show schematically and respectively the behavior of a conventional perforated tube and one according to the invention when the pin is inserted.
  • a tube according to the invention is cylindrical in shape and formed by coiling a net or piece of wire netting, whose sides 1 are very thin and define a mesh 2 which may be of any shape, for example, square, diamond-shaped or round.
  • the material of the net is friable and made of a synthetic resin material such as polystyrene or polyvinyl chloride.
  • a bendable flange 3 is inserted across this mesh and its clips may assume the position 3' (FIG. 2) to hold the tube in its hole 4 (FIG. 3) once it is introduced.
  • the sealing charge is lodged within the tube.
  • the charge is formed from one or more capsules 5 formed by a sealed envelope containing the synthetic resin putty and its hardener 6 and these may be either contiguous, mixed or not, or separated, as desired.
  • FIG. 2 shows one capsule and FIG. 2a shows capsules 5a in contiguous relation.
  • the sealed envelope may be made of any suitable material such as sheaths or sheets of plastic material, treated or non-treated papers, glass, bakelite,
  • the resin putty in the capsule 5 and the hardener 6 may be located in different holders made from different materials. Cement, resins, thermo-hardening resins or gums may also be used, the invention not being dependent upon the kind of adhesive used.
  • the capsule or capsules- may be held in place in the net tube by the star-shaped flanges 3 which also insure that the sealing charge is held in the hole when the arrangement is put into use.
  • the pin 7 to be sealed is inserted.
  • the end of the pin comes to rest against the base of the sealing 'car-' tridge and if the inner capsule is, as it is most frequently made of a supple material, the resin is compressed and the lateral envelope of the capsule bulges through the holes 2 of the tube.
  • the pin continues to progress towards the base of the hole, it forms a piston and even when the capsule 5 is split or shattered, the pressure of the resin makes the bulges aforementioned, burst, thus preventing the supple envelope or envelopes from tearing into strips of material which would impair the adhesion of the pin to the putty and wall, or create points of low resistance for the sealing.
  • FIGS. 4 and 5 allow the differences in behavior between the conventional perforated tube (FIG. 4) and the friable tube, according to the invention (FIG. 5), to be appreciated.
  • the pin 7 has been shown in its final position, having been pressed axially into the tube containing the sealing charge.
  • the insertion of the pin 7 into the charge not only makes the plastics capsule 5 burst but also the breakable tube, the small fragments of which form a filler for the putty, so that the pin is embedded in a homogenous mass which insures its holding and support in the hole 4.
  • the tube may be as long as the bored hole and even if a long divided sealing is required a single load may be used.
  • the capsule is not of necessity the same length as the net tube and several capsules of suitable sizes which may be separated by spaces, may be used within the same net tube.
  • the capsules or capsule may be simple or multiple and contain the putty and the hardener either in the same envelope, mixed or contiguous, or in distinct compartments of the same envelope.
  • the putty and the hardener may again be located in separate capsules of large or small size (small tubes, balls, beads, etc.) placed alternately or in mixture in the net tube.
  • a device for use in anchoring a support pin comprising a hollow elongated element of openwork construction, a capsule within said hollow elongated element and containing a charge of cement-forming material for anchoring the support pin, said capsule being so constituted that the capsule bursts through the open work construction when subjected to pressure upon insertion of the pin, said element of open work construction being made of a friable material to fragment during further insertion of the pin and to become homogeneously distributed into the cement-forming material to contribute to the anchoring of the pin in the hole.
  • a device as claimed in claim 2, wherein the synthetic resin is polystyrene or polyvinyl chloride.
  • the capsule comprises a rigid and friable envelope and includes a synthetic putty in the form of an accelerated but unhardened polyester resin, a hardening catalyst and an inert filler, these components being arranged to be mixed together on the insertion of the pin to be anchored, said accelerated resin and the said mixture of catalyst and filler being contained in separate supple sheaths located behind one another in the rigid envelope.

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)
  • Joining Of Building Structures In Genera (AREA)
  • Piles And Underground Anchors (AREA)
  • Sealing Material Composition (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Dowels (AREA)
US8914A 1969-02-10 1970-02-05 Arrangements for anchoring supporting pins or bolts Expired - Lifetime US3699687A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR6903015A FR2034130A1 (en) 1969-02-10 1969-02-10 Method for anchoring support bolts in rocks - etc
FR6940901A FR2030706A5 (en) 1969-11-27 1969-11-27 Method for anchoring support bolts in rocks - etc

Publications (1)

Publication Number Publication Date
US3699687A true US3699687A (en) 1972-10-24

Family

ID=26214831

Family Applications (1)

Application Number Title Priority Date Filing Date
US8914A Expired - Lifetime US3699687A (en) 1969-02-10 1970-02-05 Arrangements for anchoring supporting pins or bolts

Country Status (5)

Country Link
US (1) US3699687A (da)
AU (1) AU1109870A (da)
CA (1) CA943780A (da)
DE (1) DE2005161B2 (da)
GB (1) GB1303723A (da)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805533A (en) * 1971-08-19 1974-04-23 Explosives & Chem Prod Fixing elements
US3901039A (en) * 1973-03-09 1975-08-26 Lundkvist Alfred Apertured sleeve-shaped members for use in carrying out roof-bolting by means of bolts fastened in bore holes
US3925996A (en) * 1974-09-27 1975-12-16 Du Pont Rock bolt/anchoring resin cartridge system
US4007831A (en) * 1973-06-19 1977-02-15 Frederick William Bernhardt Cartridges containing self-setting mixes
US4153156A (en) * 1977-08-08 1979-05-08 Minnesota Mining And Manufacturing Company Method for reinforcing or sealing solid structures or for anchoring bolts therein and cartridges for use in such method
US4253566A (en) * 1979-08-16 1981-03-03 Minnesota Mining And Manufacturing Company Resin-containing cartridges and process for sealing solid structures or for anchoring bolts and rods therein
WO1981002605A1 (en) * 1980-03-07 1981-09-17 A Ciavatta Oblate friction rock stabilizer and installation lubricating cement utilized therewith
EP0063442A2 (en) * 1981-04-13 1982-10-27 Celtite Inc. Improved anchoring cartridge and method
US4820095A (en) * 1988-02-26 1989-04-11 Engineered Instruments, Inc. Anchor device for securing rock bolts
US5544980A (en) * 1994-04-11 1996-08-13 Seegmiller; Ben L. Anchor structure
US5730557A (en) * 1995-03-21 1998-03-24 Hilti Aktiengesellschaft Mortar mixture unit for chemical attachment of anchoring means in boreholes
US20040165958A1 (en) * 2001-04-20 2004-08-26 Mclaren Matthew David Inserter and cap
US20040250497A1 (en) * 2003-06-10 2004-12-16 Simpson Strong-Tie Company, Inc. Connection and method for setting a composite anchor with an apertured screen in a substrate
US20050152768A1 (en) * 2001-02-20 2005-07-14 Turner Intellectual Property Limited Fixing plug
DE102006058182A1 (de) * 2006-11-30 2008-06-05 Adolf Würth GmbH & Co. KG Siebhülse
WO2018223156A1 (en) * 2017-05-30 2018-12-06 Ncm Innovations (Pty) Ltd Resin cartridge positioner
US20220099127A1 (en) * 2020-09-25 2022-03-31 Steven S. Baik Encapsulated adhesive

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528792A (en) * 1978-05-30 1985-07-16 Cross Robert C Anchoring cartridges
EP0041801B1 (en) * 1980-06-09 1984-12-05 Imperial Chemical Industries Plc A capsule of grouting material and methods for the preparation and use thereof
DE3909428A1 (de) * 1989-03-22 1990-09-27 Hilti Ag Zerstoerbare ankerpatrone
GB2263958B (en) * 1992-02-05 1995-06-07 Exchem Plc Anchoring of fixing elements in bores

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570003A (en) * 1950-04-06 1951-10-02 Palmer Welloct Tool Corp Expansible sleeve anchoring device
US2849866A (en) * 1952-10-18 1958-09-02 Flygare Adolf Fredrik Roof-bolting
US2930199A (en) * 1955-03-24 1960-03-29 Jarund Harry Sigurd Valdemar Method of anchoring bolts
US3108443A (en) * 1959-07-07 1963-10-29 Schucrmann Fritz Method of fixing anchor bolts in the drill holes
US3298144A (en) * 1963-03-20 1967-01-17 Fischer Arthur Method and device for adhesively fastening an expansion bolt in a bore of a wall
US3324662A (en) * 1963-10-21 1967-06-13 American Cyanamid Co Valved rock bolt
US3385427A (en) * 1965-12-02 1968-05-28 Explosifs Titanite Soc D Cartridge for anchoring rocks with a mortar including plastic material
US3430449A (en) * 1965-11-27 1969-03-04 Rudolf Novotny Anchor bolts and method for fixing same in drill holes especially in friable rock
US3474898A (en) * 1967-05-15 1969-10-28 American Cyanamid Co Package of reactable components

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2570003A (en) * 1950-04-06 1951-10-02 Palmer Welloct Tool Corp Expansible sleeve anchoring device
US2849866A (en) * 1952-10-18 1958-09-02 Flygare Adolf Fredrik Roof-bolting
US2930199A (en) * 1955-03-24 1960-03-29 Jarund Harry Sigurd Valdemar Method of anchoring bolts
US3108443A (en) * 1959-07-07 1963-10-29 Schucrmann Fritz Method of fixing anchor bolts in the drill holes
US3298144A (en) * 1963-03-20 1967-01-17 Fischer Arthur Method and device for adhesively fastening an expansion bolt in a bore of a wall
US3324662A (en) * 1963-10-21 1967-06-13 American Cyanamid Co Valved rock bolt
US3430449A (en) * 1965-11-27 1969-03-04 Rudolf Novotny Anchor bolts and method for fixing same in drill holes especially in friable rock
US3385427A (en) * 1965-12-02 1968-05-28 Explosifs Titanite Soc D Cartridge for anchoring rocks with a mortar including plastic material
US3474898A (en) * 1967-05-15 1969-10-28 American Cyanamid Co Package of reactable components

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805533A (en) * 1971-08-19 1974-04-23 Explosives & Chem Prod Fixing elements
US3901039A (en) * 1973-03-09 1975-08-26 Lundkvist Alfred Apertured sleeve-shaped members for use in carrying out roof-bolting by means of bolts fastened in bore holes
US4007831A (en) * 1973-06-19 1977-02-15 Frederick William Bernhardt Cartridges containing self-setting mixes
US3925996A (en) * 1974-09-27 1975-12-16 Du Pont Rock bolt/anchoring resin cartridge system
US4153156A (en) * 1977-08-08 1979-05-08 Minnesota Mining And Manufacturing Company Method for reinforcing or sealing solid structures or for anchoring bolts therein and cartridges for use in such method
US4253566A (en) * 1979-08-16 1981-03-03 Minnesota Mining And Manufacturing Company Resin-containing cartridges and process for sealing solid structures or for anchoring bolts and rods therein
EP0034620A1 (en) * 1979-08-16 1981-09-02 Minnesota Mining & Mfg CARTRIDGES WITH RESIN.
EP0034620A4 (en) * 1979-08-16 1982-01-08 Minnesota Mining & Mfg CARTRIDGE CONTAINING RESIN.
WO1981002605A1 (en) * 1980-03-07 1981-09-17 A Ciavatta Oblate friction rock stabilizer and installation lubricating cement utilized therewith
EP0063442A3 (en) * 1981-04-13 1983-10-12 Celtite Inc. Improved anchoring cartridge and method
EP0063442A2 (en) * 1981-04-13 1982-10-27 Celtite Inc. Improved anchoring cartridge and method
US4820095A (en) * 1988-02-26 1989-04-11 Engineered Instruments, Inc. Anchor device for securing rock bolts
US5544980A (en) * 1994-04-11 1996-08-13 Seegmiller; Ben L. Anchor structure
US5730557A (en) * 1995-03-21 1998-03-24 Hilti Aktiengesellschaft Mortar mixture unit for chemical attachment of anchoring means in boreholes
US20050152768A1 (en) * 2001-02-20 2005-07-14 Turner Intellectual Property Limited Fixing plug
US20040165958A1 (en) * 2001-04-20 2004-08-26 Mclaren Matthew David Inserter and cap
US20040250497A1 (en) * 2003-06-10 2004-12-16 Simpson Strong-Tie Company, Inc. Connection and method for setting a composite anchor with an apertured screen in a substrate
US6837018B1 (en) 2003-06-10 2005-01-04 Simpson Strong-Tie Company, Inc. Connection and method for setting a composite anchor with an apertured screen in a substrate
DE102006058182A1 (de) * 2006-11-30 2008-06-05 Adolf Würth GmbH & Co. KG Siebhülse
WO2018223156A1 (en) * 2017-05-30 2018-12-06 Ncm Innovations (Pty) Ltd Resin cartridge positioner
US20220099127A1 (en) * 2020-09-25 2022-03-31 Steven S. Baik Encapsulated adhesive

Also Published As

Publication number Publication date
DE2005161B2 (de) 1973-10-11
DE2005161A1 (de) 1970-10-15
GB1303723A (da) 1973-01-17
CA943780A (en) 1974-03-19
AU1109870A (en) 1971-08-12

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