WO2013079254A2 - Anker, insbesondere gesteinsanker - Google Patents
Anker, insbesondere gesteinsanker Download PDFInfo
- Publication number
- WO2013079254A2 WO2013079254A2 PCT/EP2012/070546 EP2012070546W WO2013079254A2 WO 2013079254 A2 WO2013079254 A2 WO 2013079254A2 EP 2012070546 W EP2012070546 W EP 2012070546W WO 2013079254 A2 WO2013079254 A2 WO 2013079254A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- anchor
- anchor rod
- head element
- thread
- rod
- Prior art date
Links
- 239000011435 rock Substances 0.000 title claims description 17
- 238000010079 rubber tapping Methods 0.000 claims abstract description 12
- 239000011343 solid material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011429 hydraulic mortar Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- E21D21/0046—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts formed by a plurality of elements arranged longitudinally
-
- 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
-
- 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
-
- 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
- E21D21/008—Anchoring or tensioning means
Definitions
- Anchors in particular rock anchors
- the invention relates to an anchor, in particular a rock bolt, according to the preamble of claim 1.
- an anchor is equipped with a self-tapping thread and an anchor rod, wherein in the anchor rod at least one axially extending feed channel is arranged for a curable composition.
- anchors with spreading heads are known, for example from US Pat. No. 7,896,580 B.
- the Sp Dreau be applied at the ground-side end as a sleeve on the anchor rod (typically a solid rod, rarely a hollow rod), in particular screwed, and after installation of the anchor by twisting or pulling with the mountain spreads.
- the borehole diameter required for the installation of a spreader bar anchor is often relatively large, e.g. B. 32 to 34 mm for a 16 mm anchor rod, which may be particularly on a relatively complex and space-demanding structure of the expansion head.
- the force introduction of a spreading head by its basic design possibly also by tolerance variations, often very punctually, so that under certain circumstances - especially in weak geology - the recordable compressive stresses of the surrounding mountains can be exceeded.
- spreader heads are in the not yet installed state of the anchor may not be very robust, since they are composed of several parts, which are often only loosely related. Only after activation of the spreading effect, the individual components are held together positively and positively. Under certain circumstances, this can cause the expansion sleeves to be damaged during transport of the anchors underground.
- a screw-injection anchor which has a threaded end at the bottom provided with an anchor tube, which is rotatably insertable into the soil, wherein a hydraulic mortar on the anchor tube and through openings in the tube wall into the surrounding soil is injectable.
- the object of the invention is to provide an anchor, in particular rock anchors, which is particularly easy to use, inexpensive and reliable.
- An anchor according to the invention is characterized in that a head element, on which the self-tapping thread is arranged, is fastened to a first, in particular earth-side, end of the anchor rod.
- the invention is based on a combination of a frictionally fixable screw anchor with a glued anchor and thus combines the advantages of a classic mining Sp DrSONankers that allows an immediate bond in the rock, a ringankersystems that allows small hole diameter and robust with few components, and one bonded composite system.
- a first basic idea of the invention can be seen therein to provide the essential elements of the glued composite anchor and the essential elements of the screw anchor respectively on separate elements: While the supply channel is located exclusively in the anchor rod, the self-tapping thread is exclusively at one of the anchor rod separate Element, namely the head element, arranged. Because of this separation, the anchor can be made particularly favorable with particularly high reliability.
- the outer diameter of the thread arranged on the head element is greater than the diameter of the anchor rod. This ensures a reliable setting process of the armature and a defined introduction of force before the introduction of the hardenable mass. It is particularly preferred that the core diameter of the thread arranged on the head element is greater than the diameter of the anchor rod.
- the head member may form an annular axial stop which abuts the hardened mass is applied, so that a particularly good tensile force is given.
- the feed channel and the thread are axially spaced.
- the production cost can be further reduced, since in this case anchor rod and head element can be geometrically very easily performed.
- the axial direction can be understood to mean the longitudinal direction of the armature, in particular its anchor rod.
- At least one, preferably radially extending, outlet bore is provided according to the invention in the anchor rod, which leads from the feed channel to the outer side of the anchor rod.
- the outlet bore is conveniently located just before the first end of the anchor rod, i. before the end, where the head element is located. This may in particular include that the distance between the outlet bore and the first end is less than 10 times, 5 times or 1 times the diameter of the anchor rod. This is fluidically particularly advantageous. It can also be provided additional outlet holes whose distance from the first end is greater.
- the design effort can be further reduced that the supply channel is completed by the head element. Accordingly, the head member not only serves as a carrier of the thread, but also has fluid mechanical function by sealing the feed channel at the end face of the anchor rod.
- the head element consists of solid material. This implies that the head element is solid.
- the anchor rod and / or the head element are preferably made of metal, in particular steel.
- the anchor rod which may also be referred to as an anchor tube due to the internal feed channel, is suitably butt-connected to the head element.
- the anchor rod and the head element are connected via a welded connection, in particular via a friction-welded connection. Due to the inventive geometry of individual parts such a connection in a particularly simple manner can be realized. Instead of a welded connection and a screw connection is possible.
- an anchor nut is arranged at an end region of the anchor rod facing away from the first end.
- the invention also relates to the intended use of the anchor, in which the anchor is received in a rock hole, wherein the thread of the head element is screwed into the rock hole surrounding rock and the anchor rod is surrounded by a hardened mass.
- the rock hole can be cylindrical or formed as a stepped bore.
- hardenable mass e.g., cement mortar
- the mass rises to the area of the first end of the anchor rod, then exits via the at least one radial outlet bore, and steadily fills the annulus in the borehole down until it emerges again at the borehole mouth.
- the self-tapping thread is provided exclusively on the head element and it does not extend to the anchor rod.
- the anchor rod may be formed on its outer lateral surface smooth or profiled in view of a particularly good introduction of force into the cured mass. If the anchor rod is profiled on its outer lateral surface, this profiling can also be formed thread-like. According to the invention, however, the thread-like profiling is formed with other thread parameters than the self-tapping thread on the head element, is formed discontinuously to the self-tapping thread and / or is in particular not self-tapping.
- Figure 1 A side view of an inventive anchor in a rock well, the rock surrounding the rock well is shown cut.
- FIG. 1 An embodiment of an inventive armature is shown in Figure 1.
- the anchor is disposed in a rock hole 91 formed in rock 90.
- the armature has an approximately cylindrical anchor rod 10, at the first, borehole side End 31, a head element 20 is attached.
- the anchor rod 10 and the head element 20 are thereby butt connected via a Reibschweissjur 26.
- the thread 21 On the outside of the cylindrical head element 20, a self-tapping external thread 21 is provided.
- the thread 21 has an outer diameter d a , which is greater than the inner diameter d h of the borehole 91, that is, that thread 21 is in the rock 90, which surrounds the borehole 91, cut.
- the anchor rod 10 in the borehole 91 is surrounded by an annular space 96.
- This annular space 96 can be filled with a hardenable mass for additional securing of the armature, with the hardenable mass in particular being able to be introduced after the armature has been prestressed in the borehole 91.
- the anchor rod 10 designed as an anchor tube in its interior an axially, ie in the longitudinal direction of the anchor rod 10 extending feed channel 15, which is shown in the figure with dashed lines.
- this feed channel 15 opens at least one radially extending outlet bore 16, which is provided in the region of the first end 31 of the anchor rod 10, and which leads to the outside of the anchor rod 10.
- the anchor rod 10 is provided with an external thread on which an anchor nut 40 is arranged.
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)
- Piles And Underground Anchors (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12772961.4A EP2785975B1 (de) | 2011-11-28 | 2012-10-17 | Anker, insbesondere gesteinsanker |
US14/360,755 US9664042B2 (en) | 2011-11-28 | 2012-10-17 | Anchor, especially a rock anchor |
KR1020147017690A KR20140094027A (ko) | 2011-11-28 | 2012-10-17 | 앵커, 특히 록 앵커 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011087178.0 | 2011-11-28 | ||
DE102011087178A DE102011087178A1 (de) | 2011-11-28 | 2011-11-28 | Anker, insbesondere Gesteinsanker |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2013079254A2 true WO2013079254A2 (de) | 2013-06-06 |
WO2013079254A3 WO2013079254A3 (de) | 2013-12-05 |
Family
ID=47022697
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2012/070546 WO2013079254A2 (de) | 2011-11-28 | 2012-10-17 | Anker, insbesondere gesteinsanker |
Country Status (5)
Country | Link |
---|---|
US (1) | US9664042B2 (de) |
EP (1) | EP2785975B1 (de) |
KR (1) | KR20140094027A (de) |
DE (1) | DE102011087178A1 (de) |
WO (1) | WO2013079254A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190358335A1 (en) | 2017-01-12 | 2019-11-28 | Alan J. Russell | Stomach acid-stable and mucin-binding protein-polymer conjugates |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2063843A1 (de) | 1970-12-24 | 1972-06-29 | Kali Und Salz Gmbh, 3500 Kassel | Verfahren zum Anbringen von Schrauben als Zuganker in anorganische, natürliche Feststoffe |
DE29707502U1 (de) | 1997-04-25 | 1997-06-19 | Gebr. Van Leeuwen Harmelen B.V., Harmelen | Schraub-Injektionsanker |
DE102007000829A1 (de) | 2007-10-08 | 2009-04-09 | Hilti Aktiengesellschaft | Befestigungselement |
US7896580B2 (en) | 2005-11-09 | 2011-03-01 | Sandvik Intellectual Property Ab | Self drilling rock bolt |
DE102010002214A1 (de) | 2010-02-23 | 2011-08-25 | Hilti Aktiengesellschaft | Bewehrungs- und/oder Ankerschraube |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2993950A (en) * | 1959-06-17 | 1961-07-25 | Formar Ind Inc | Self-tapping non-conductive fastener |
US4553279A (en) * | 1983-10-17 | 1985-11-19 | Gassew Garry L | Multi-purpose paint stick |
DE3840158A1 (de) * | 1988-11-29 | 1990-05-31 | Gd Anker Gmbh & Co Kg | Verfahren zum setzen eines ankers und vorrichtung zur durchfuehrung des verfahrens |
CA2095230A1 (en) * | 1990-10-29 | 1992-04-30 | Peter Andrew Gray | Self-tapping, and self-tapping and self-drilling, rock bolts |
DE19608859A1 (de) * | 1996-03-07 | 1997-09-11 | Hilti Ag | Ankerstange für Verbundanker |
US6457909B1 (en) * | 2000-12-22 | 2002-10-01 | Shulin Xu | Multi-purpose anchor bolt assembly |
US7866930B2 (en) | 2005-06-13 | 2011-01-11 | Aoyama Seisakusho Co., Ltd. | Bolt |
DE102006000412A1 (de) * | 2006-08-23 | 2008-02-28 | Hilti Ag | Befestigungselement für harte Untergründe |
AU2008341002A1 (en) * | 2007-12-21 | 2009-07-02 | Alminco Pty Ltd | Self drilling rock bolting |
FR2940807B1 (fr) * | 2009-01-06 | 2011-02-04 | Ancrest Sa | Dispositif d'ancrage dans un sol |
CN102317573B (zh) * | 2009-09-01 | 2014-02-12 | Fci特拉华控股有限公司 | 屈服式锚杆及组件 |
-
2011
- 2011-11-28 DE DE102011087178A patent/DE102011087178A1/de not_active Withdrawn
-
2012
- 2012-10-17 EP EP12772961.4A patent/EP2785975B1/de not_active Not-in-force
- 2012-10-17 US US14/360,755 patent/US9664042B2/en active Active
- 2012-10-17 KR KR1020147017690A patent/KR20140094027A/ko not_active Application Discontinuation
- 2012-10-17 WO PCT/EP2012/070546 patent/WO2013079254A2/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2063843A1 (de) | 1970-12-24 | 1972-06-29 | Kali Und Salz Gmbh, 3500 Kassel | Verfahren zum Anbringen von Schrauben als Zuganker in anorganische, natürliche Feststoffe |
DE29707502U1 (de) | 1997-04-25 | 1997-06-19 | Gebr. Van Leeuwen Harmelen B.V., Harmelen | Schraub-Injektionsanker |
US7896580B2 (en) | 2005-11-09 | 2011-03-01 | Sandvik Intellectual Property Ab | Self drilling rock bolt |
DE102007000829A1 (de) | 2007-10-08 | 2009-04-09 | Hilti Aktiengesellschaft | Befestigungselement |
DE102010002214A1 (de) | 2010-02-23 | 2011-08-25 | Hilti Aktiengesellschaft | Bewehrungs- und/oder Ankerschraube |
Also Published As
Publication number | Publication date |
---|---|
US20140334885A1 (en) | 2014-11-13 |
KR20140094027A (ko) | 2014-07-29 |
WO2013079254A3 (de) | 2013-12-05 |
US9664042B2 (en) | 2017-05-30 |
DE102011087178A1 (de) | 2013-05-29 |
EP2785975B1 (de) | 2017-07-12 |
EP2785975A2 (de) | 2014-10-08 |
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