EP2543816A2 - Boulon d'ancrage de roche - Google Patents

Boulon d'ancrage de roche Download PDF

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Publication number
EP2543816A2
EP2543816A2 EP12170923A EP12170923A EP2543816A2 EP 2543816 A2 EP2543816 A2 EP 2543816A2 EP 12170923 A EP12170923 A EP 12170923A EP 12170923 A EP12170923 A EP 12170923A EP 2543816 A2 EP2543816 A2 EP 2543816A2
Authority
EP
European Patent Office
Prior art keywords
tube
rock
anchor
space
bore
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.)
Withdrawn
Application number
EP12170923A
Other languages
German (de)
English (en)
Inventor
Richard Podesser
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.)
Hilti AG
Original Assignee
Hilti 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 Hilti AG filed Critical Hilti AG
Publication of EP2543816A2 publication Critical patent/EP2543816A2/fr
Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to a system with a chemical rock bolt, in particular for use in mining, and a device for supplying a fixative according to the preamble of claim 1, a method for fixing a rock anchor in rock according to the preamble of claim 9 and a device for feeding a fixative in a space between an anchor tube and a bore according to the preamble of claim 15.
  • rock anchors In mining and tunneling rock anchors are used to prevent rock movements of the upcoming rock, to slow down or to secure larger flakes of pending rock and thus to allow safe operation. Two functional principles are known, some of which are combined.
  • anchoring of the anchor takes place by means of frictional engagement, wherein mechanical rock anchors or rock anchors generally also have an expansion sleeve.
  • anchor pipes In chemical rock anchors anchor pipes are connected with a hardening mortar or synthetic resin as a fixing material cohesively with the substrate or the upcoming rock.
  • the rock anchors are installed with or without bias in the upcoming rock.
  • Self-drilling rock bolts are provided with a drill head at a rear end of the rock bolt. Such self-drilling rock anchors can be drilled in one step in the rock and then anchored, without an additional drilling step is required with a separate drilling tool.
  • a first step with a drill pipe is to drill a hole in the rock, and then the rock bolt can be inserted into the hole without a drill head.
  • the fixative, z As a synthetic resin with a glue component and a hardness component, can be introduced in different ways in an annular space between the rock bolt or the anchor tube and the rock. After incorporating the hole in the rock two cartridges are inserted with the adhesive component and the hardness component in the hole. Subsequently, the anchor tube is inserted into the bore, thereby destroying the cartridges of the anchor tube and the resin of the adhesive and hardness component is distributed in the annular space between the anchor tube and the rock. In a further known method, the adhesive and hardness component is located in two cartridges or bags within an inner space enclosed by the anchor tube. After insertion of the anchor tube into the bore on the rock is destroyed with a piston, the cartridge of the adhesive component and the cartridge of the hardness component and then promoted by a movement of the piston of the resin in the space between the anchor tube and the rock.
  • the DE 10 2005 050 929 A1 shows a method for setting rock anchors in which an anchor rod with an inner channel is introduced into a borehole, pressed through the inner channel a flowable mass and the finished wellbore is filled with the mass and cures the mass in the borehole with the remaining anchor rod in the borehole.
  • the DE 10 2009 002 951 A1 shows a self-drilling fastener for chemical anchoring in a substrate with a hollow cylindrical receiving body known which has a drill head at one end.
  • a hollow cylindrical receiving body known which has a drill head at one end.
  • an inner tube is arranged and within the inner tube an expressible hardenable multicomponent mass is stored.
  • the object of the present invention is therefore a system with a chemical rock bolt, in particular for use in mining, and with a device for supplying a fixative, a method for fixing a rock anchor in rock and a device for supplying a fixative in a space between an anchor tube and a hole to provide, in which with a small technical effort in a controlled process, the fixative can be introduced into a space between the anchor tube and a hole in a rock.
  • the device and the rock bolt can thus be stored separately and for the introduction of fixer for several rock bolts only one device is required. As a result, costs can be saved, because with only a device in a variety of rock anchors, the fixative can be introduced into a space between the anchor tube and the rock.
  • the outer diameter of the tube substantially corresponds to the diameter of the inner space. Essentially, this means that the outer diameter of the tube with a deviation of less than 30%, 20%, 10%, 5% or 2% corresponds to the diameter of the interior.
  • the device comprises at least one means for conveying the fixative outside the tube into a space between the anchor tube and a hole in a rock at a tube inserted into the interior.
  • the fixing agent can be conveyed or introduced into the space between the anchor tube and the bore on the rock by means of the means for conveying the fixation substance.
  • the at least one receiving chamber is formed as at least one of walls of the tube limited chamber, at least one cartridge or at least one bag.
  • the receiving chamber may thus be formed either as a separate component within the tube, for. B. as a cartridge or bag or the at least one receiving chamber can, preferably in one piece, be formed on the pipe by the pipe additional walls are present.
  • the at least one receiving chamber can also be refillable.
  • the at least one receiving chamber is thus not or only partially destroyed during conveyance of the fixative in the space between the anchor tube and the rock or is designed such that such destruction is not required for discharging the fixative from the at least one receiving chamber.
  • this is the at least one receiving chamber in its volume accordion-like enlarged and reduced.
  • the at least one receiving chamber is not a disposable part.
  • the at least one means is designed as a piston or an extrusion rod.
  • the device comprises at least one device for mechanical, hydraulic or pneumatic movement of the piston or the Auspressstange, z. B. a high-pressure pump and a sealing plate for the pipe.
  • the fixing agent is a synthetic resin with a bonding component and a hardness component, and the bonding and hardening components are stored separately in two receiving chambers.
  • the system in particular the device, comprises a mixer for mixing the fixative and / or the device comprises a magazine with a plurality of tubes and / or the rock anchor comprises a drill head at a rear end of the Anchor tube.
  • the magazine is arranged, for example, on a drilling vehicle for the automated introduction of fixative.
  • fixative for example, several holes are incorporated into the rock, then introduced into these holes the rock bolts.
  • Different types of fixation substances are preferably arranged on the magazines, so that suitable different types of fixation substances for the upcoming rock can be introduced at the borehole.
  • the anchor tube is formed as a hollow tube.
  • Method according to the invention for fixing a rock anchor in rock in particular with a system described in this patent application, with the steps: incorporating a hole in the rock, inserting the rock bolt into the hole, storing a fixing substance in at least one receiving chamber, in particular by the at least one receiving chamber is integrated or disposed in a tube, preferably the tube is disposed within a space enclosed by the anchor tube interior, conveying a fixative in a space, in particular annular space, between an anchor tube and the rock, cohesively attaching the anchor tube with the fixative on the rock, hardening the fixative wherein after conveying the fixative into the space between the anchor tube and the rock, the tube and / or the at least one receiving chamber is withdrawn from the interior space enclosed by the anchor tube.
  • the tube and / or the at least one receiving chamber can thus be used for a plurality of anchor tubes and do not remain in the anchor tube after hardening of the fixative.
  • the fixative and / or the fixative stored first in at least one receiving chamber is inserted into a space enclosed by the anchor tube interior and then the fixative in the space between the Anchor tube and the rock is conveyed, in particular during the introduction of the fixative in the interior of the anchor tube is disposed in the bore and / or the anchor tube has been inserted into the bore.
  • the fixative is thus not pumped into the enclosed space of the anchor tube interior, so that the fixative does not pass through streams into the interior. Instead, the fixative is stored within the at least one receptacle and the receptacle is inserted into the interior.
  • the fixing material is introduced into the interior by the at least one receiving chamber, in particular integrated into a tube or arranged, is inserted into the interior, in particular the tube is inserted into the interior while the anchor tube is already arranged in the bore.
  • the fixative is conveyed with at least one means for conveying the fixative in a space between the anchor tube and a hole in a rock from the at least one receiving chamber in the room, in particular with a mechanically, hydraulically or pneumatically moved piston or extrusion bar.
  • the fixative is formed as a synthetic resin with an adhesive component and a hardness component and the adhesive and hardness components are stored separately in two separate receiving chambers introduced into the interior and during the delivery of the fixative in the space between the anchor tube and the bore in the rock, the adhesive and hardness component are mixed in a mixer.
  • the at least one receiving chamber in particular designed as a cartridge or bag, destroyed by the means for conveying the fixative, in particular after insertion into the interior, and / or the bore is from a separate drill string or from the rock bolt with a Drilling head incorporated.
  • Device for feeding a fixative into a space between an anchor tube and a bore, comprising at least one receiving chamber with the fixative, preferably at least one means for delivering the fixative into a space between the anchor tube and a bore in a rock, the at least one receiving chamber is formed within a tube, so that the tube is inserted into a space enclosed by the anchor tube interior after insertion of the anchor tube into the bore, in particular a plurality of tubes are arranged in a magazine and / or with the at least one means of fixing material is conveyed at a arranged in the interior tube.
  • the rock bolt is also designed as a sliding anchor.
  • the sliding anchor has a sliding function in that, starting from a predetermined tensile force absorbed by the rock bolt, that is to say the compressive force acting on the anchor plate or anchor nut caused by the rock, the rock bolt increases in length and thereby permits movement of the rock, reduce the tensile forces to be absorbed by the rock bolt (below the specified tension as a threshold so that no more gliding occurs), thereby ensuring a better securing of the rock.
  • a rear end of the anchor tube is closed by a cap, and the anchor tube and / or the cap have at least one opening for guiding the fixation substance from the interior enclosed by the anchor tube.
  • the cap can on the one hand be a separate component or be formed integrally with the anchor tube.
  • the fixative in particular a synthetic resin or mortar, comprises two components, eg. B. a glue component and a hardness component.
  • the components of the system for example the anchor tube, the tube, the piston, the anchor nut, the anchor plate, the cap, at least partially, in particular completely, of metal, for example steel or a steel alloy, or glass fiber reinforced plastic.
  • a designed as a sliding anchor rock anchor 2 is z. B. used in mining for temporary securing of rock 28 on studs.
  • the Rock anchor 2 comprises an anchor tube 4, which encloses an interior 15.
  • the rock anchor 2 is a chemical rock anchor 2, that is, with a fixing substance 16, the anchor tube 4 can be firmly bonded to the rock 28.
  • a bore 29 with a drill pipe (not shown) is incorporated into the rock 28 and then the rock bolt 2 can be inserted with the anchor pipe 4 in the bore 29 ( Fig. 1 ).
  • Fig. 4 is shown attached to the hardened fixative 16 rock anchor 2.
  • the anchor tube 4 has on the outside an external thread 12 and on the external thread 12 of the anchor tube 4, an anchor nut 13 is screwed with an internal thread.
  • the internal thread of the anchor nut 13 engages in the external thread 12 of the anchor tube 4 a.
  • the anchor nut 13 has on the outside a polygon (not shown). Due to this polygon radially on the outside of the armature nut 13, a torque can be transmitted to the armature nut 13 and the armature nut 9 into the in Fig. 4 shown position can be screwed onto the anchor tube 4.
  • the anchor nut 13 rests indirectly with an anchor plate 14 on the rock 28, so that the rock 28 can be secured with the rock bolt 2.
  • the pressure forces transmitted from the anchor nut 13 to the anchor tube 4 are transmitted from the anchor tube 4 with the fixative 16 to the rock 28.
  • a system 1 ( Fig. 2 and 3 ) comprises in addition to the rock bolt 2, a device 3 for supplying the fixing material 16 in a space 26, in particular annular space 27, between the anchor tube 4 and the rock 28 and the bore 29.
  • the device 3 comprises a tube 5 and inside the tube 5 are a mixer 9 and two receiving chambers 6, namely a first bag 7 and a second bag 8 are arranged.
  • Within the first bag 7 is a adhesive component 18 of a synthetic resin 17 and within the second bag 8 is a hardness component 19 of the synthetic resin 17 is disposed or stored ( Fig. 2 ).
  • a front end portion and a front end of the tube 5 is of a sealing plate 24th closed with an opening 25.
  • the anchor tube 4 has a rear end 11 and a front end 10. At the rear end 11 of the anchor tube 4 an enclosed by the anchor tube 4 interior 15 is closed by a cap 22 and the cap 22 has an opening 23. Through the opening 23, the fixative 16 can be introduced into the space 26.
  • the device 3 is provided with a means 21 for conveying the fixing substance 16 into the space 26.
  • the means 21 in this case comprises a piston 20 and the sealing plate 24.
  • the means 21 comprises a high-pressure pump, not shown, for introducing pressurized water under high pressure through the opening 23 on the sealing plate 24.
  • the anchor tube 4 of the rock bolt 2 can be inserted into the bore 29 ( Fig. 1 ).
  • the tube 5 of the device 3 is inserted into the space enclosed by the anchor tube 4 interior 15 ( Fig. 2 ).
  • the tube 5 may already be inserted into the interior 15 before the insertion of the anchor tube 4 into the bore 29.
  • high pressure pump press water is introduced under high pressure through the opening 25 in a space enclosed by the tube 5 space.
  • the mixer 9 is arranged inside the tube 5, so that the entire synthetic resin 17 has to flow through the mixer 9 before exiting through the opening 23. In this case, the mixer 9 with provided such mixing devices, for. B.
  • the device 3 and the rock bolt 2 are two separate components, so that with only one device 3 in a variety of rock anchors 2, the fixative 16 can be introduced into the space 26.
  • the receiving chambers 6 within the tube 5 can also be refillable, so that no expensive replacement of receiving chambers 6, z. B. as a disposable bag 7, 8, is necessary.
  • a multiplicity of devices 3 can also be stored in a magazine of a drill carriage, thereby allowing a very rapid transport of fixation substance 16 into the space 26 in the case of a multiplicity of rock anchors 2.
  • the tubes 5 of the device 3 can also have a substantially greater length than the anchor tube 4, so that thereby the tube 5 can be used at different anchors 4 with a different length.
  • different types of fixatives 16 are kept and thus adapted to the corresponding rock 28 on which the anchor tube 4 is located, which are each introduced the most suitable fixative 16 in the space 26.

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  • 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)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
EP12170923A 2011-07-07 2012-06-06 Boulon d'ancrage de roche Withdrawn EP2543816A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011078769A DE102011078769A1 (de) 2011-07-07 2011-07-07 Gesteinsanker

Publications (1)

Publication Number Publication Date
EP2543816A2 true EP2543816A2 (fr) 2013-01-09

Family

ID=46275711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12170923A Withdrawn EP2543816A2 (fr) 2011-07-07 2012-06-06 Boulon d'ancrage de roche

Country Status (5)

Country Link
US (1) US20130064609A1 (fr)
EP (1) EP2543816A2 (fr)
AU (1) AU2012204051A1 (fr)
DE (1) DE102011078769A1 (fr)
RU (1) RU2012128345A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104695990B (zh) * 2015-02-13 2017-03-29 中国矿业大学(北京) 一种用于巷道锚索锚固剂安装的整体推引式方法
CN108104852B (zh) * 2017-12-18 2019-05-14 中国矿业大学 一种降低预应力损失的低张拉锚索施工方法
US20240344457A1 (en) * 2021-08-20 2024-10-17 Mohlalefi (Pty) Ltd Anchor Arrangement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3100730A1 (de) 1980-02-12 1981-12-24 Rolf 7000 Stuttgart Deimold Verfahren zum stuetzen und/oder verfestigen von hohlraumwaenden im tief-, berg- und tunnelbau, vorrichtung zum durchfuehren des verfahrens und in einem bohrloch der hohlraumwand sitzender verfestigungsanker
DE102005050929A1 (de) 2004-10-21 2006-04-27 Minova Carbotech Gmbh Verfahren zum Setzen von Gesteinsankern
DE102009002951A1 (de) 2009-05-08 2010-11-11 Hilti Aktiengesellschaft Selbstbohrendes Befestigungselement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538145C2 (de) * 1985-10-26 1994-06-01 Hilti Ag Patrone für aushärtende Massen
DE10321175B3 (de) * 2003-05-12 2004-08-26 Carbotech Fosroc Gmbh Injektionsanker
DE102007005540B4 (de) * 2006-02-24 2015-04-23 Friedr. Ischebeck Gmbh Verfahren und Injektionsanker mit fixiertem Statikmischer
CA2607850C (fr) * 2006-07-20 2015-01-06 Jennmar Corporation Boulon d'ancrage
DE102007000277A1 (de) * 2007-05-16 2008-11-20 Hilti Aktiengesellschaft Selbstbohrender Gebirgsanker

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3100730A1 (de) 1980-02-12 1981-12-24 Rolf 7000 Stuttgart Deimold Verfahren zum stuetzen und/oder verfestigen von hohlraumwaenden im tief-, berg- und tunnelbau, vorrichtung zum durchfuehren des verfahrens und in einem bohrloch der hohlraumwand sitzender verfestigungsanker
DE102005050929A1 (de) 2004-10-21 2006-04-27 Minova Carbotech Gmbh Verfahren zum Setzen von Gesteinsankern
DE102009002951A1 (de) 2009-05-08 2010-11-11 Hilti Aktiengesellschaft Selbstbohrendes Befestigungselement

Also Published As

Publication number Publication date
AU2012204051A1 (en) 2013-01-24
US20130064609A1 (en) 2013-03-14
DE102011078769A1 (de) 2013-01-10
RU2012128345A (ru) 2014-01-20

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