CN101151437A - Improved resin groutable expansion anchor and method of installing same - Google Patents
Improved resin groutable expansion anchor and method of installing same Download PDFInfo
- Publication number
- CN101151437A CN101151437A CNA2006800101114A CN200680010111A CN101151437A CN 101151437 A CN101151437 A CN 101151437A CN A2006800101114 A CNA2006800101114 A CN A2006800101114A CN 200680010111 A CN200680010111 A CN 200680010111A CN 101151437 A CN101151437 A CN 101151437A
- Authority
- CN
- China
- Prior art keywords
- anchor pole
- boring
- rock bolt
- rotation
- chuck
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 229920005989 resin Polymers 0.000 title description 25
- 239000011347 resin Substances 0.000 title description 25
- 239000011435 rock Substances 0.000 claims abstract description 40
- 239000002775 capsule Substances 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000004873 anchoring Methods 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- 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
- E21D21/0066—Anchoring-bolts formed by a bundle of radially arranged rigid elements
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)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A rock bolt and a method of installing a rock bolt in a borehole (3) of a rock formation. The rock bolt including an elongate shank (1) and an expansion assemby (2) located at the distal end of the shank. The expansion assembly being expandable to lock the rock bolt in a borehole upon relative forward rotation of the rock bolt. The rock bolt further including stop means (4) to lock the expansion assembly with respect to the rock bolt for conjoined rotation upon a reverse rotation of the rock bolt.
Description
Technical field
The present invention relates to the method for anchor pole and skyhook, specifically, relate to the anchor pole that combines use with binding material.The present invention has been developed to and has been mainly used in the anchor pole that uses in the mining purposes, and describes with reference to this purposes hereinafter.Yet, should be appreciated that the present invention is not limited only to the purposes of digging up mine.
Background technology
Any discussion about prior art in whole manual never should be considered to admit: this prior art is well-known or forms the part of this area general knowledge.
Known three kinds of main types be used for anchor pole in hole, ore deposit stationary support.First kind is resin anchoring formula anchor pole, and by anchor pole being inserted boring and this anchor pole being installed in the boring, this anchor pole comprises the quick hardening resin compound.In case hardening of resin, anchor pole is with regard to securable supporting construction thus.
Second kind is mechanical anchor formula anchor pole, and this anchor pole utilization is positioned at the expansion assembly of anchor pole end.In case this expansion assembly forward rotation will expand with anchor rod anchored in boring.
The third is the anchoring type anchor pole that machinery and resin combine.This anchor pole utilizes resin compound in conjunction with the mechanical swelling assembly, has the anchoring piece of above-mentioned two types advantage with formation.
Common this anchor pole inserts in the boring by the breakable capsule that at first will comprise resin compound and is installed.Then anchor pole is inserted in the boring so that resin capsule is broken.In case resin discharges, just anchor pole is further inserted in the boring till the position that arrival is wanted.The rotation that applies forward then to be activating expansion assembly, thereby locks the rock bolt in the in the boring, simultaneously hardening of resin.
The shortcoming of such anchor pole is, during insertion, the user usually must make the anchor pole axially reciprocating with abundant mixing and distribution resin compound, thereby in case hardening of resin, anchor pole just forms firm combination.Like this, needing to implement this reciprocating time can remarkable increase installation cost.
In addition, have been found that required axial insertion force is excessive, because the fine clearance between boring and the expansion assembly only is formed for the very little path of resin flows.
Should be appreciated that, in this insertion process and before anchor pole arrives its position of wanting, as long as apply minimum rotation.That is to say that the rotation of forward causes expansion assembly irreversibly to lock anchor pole immediately before it arrives the final position, and reverse rotation can cause expansion assembly to throw off with rock bolt shank portion.
The objective of the invention is to overcome or improve at least one shortcoming of prior art or provide the alternative of usefulness.
Summary of the invention
According to a first aspect of the invention, provide a kind of anchor pole, this anchor pole has:
Elongated shaft;
Be in the expansion assembly of the end of shaft, this expansion assembly is inflatable, thereby in case anchor pole has relative forward rotation, expansion assembly just locks the rock bolt in the in the boring; And
Stop device, stop device make expansion assembly lock with respect to anchor pole, thereby in case anchor pole has backward rotation with regard to co-rotation.
Preferably, expansion assembly comprises expanding shell, and this expanding shell has the elongated expansion blade of two or more longitudinal extensions to be used for locking the rock bolt in the boring.
Preferably, expanding shell cooperates slidably with shaft, and is bearing on the shaft by adjoining members.More preferably, adjoining members is the nut with the shaft screw-threaded engagement.
Preferably, the diameter of expanding shell equals the diameter of rock bolt shank substantially, thereby binding material more freely flow to the zone of the rock bolt shank of expanding shell below.
Preferably, expansion assembly comprises the chuck with the shaft screw-threaded engagement, thereby anchor pole causes moving axially of chuck with respect to the rotation of chuck, chuck has the surface that cooperates with complementary surface slide key on the expansion blade, in case thereby anchor pole has relative to the rotating of forward, and will cause the outside diffusion deformation of blade.Chuck and expanding shell preferably are suitable for co-rotation.
Preferably, stop device is arranged on the chocking construction of the end of rock bolt shank.More preferably, chocking construction is the flange member that is fixedly connected to rock bolt shank.As an alternative, chocking construction is that the part by rock bolt shank forms, and the end of anchor pole is driven plain to form chocking construction.
Preferably, each blade all comprises the clamping structure on a plurality of and boring external surface clamping engagement, that be arranged on blade.
Preferably, chuck surface is a tapering.
Preferably, chuck comprises one or more fluid flowing passages.
According to a second aspect of the invention, provide the method in the boring that a kind of anchor pole with first aspect is installed in the rock stratum, may further comprise the steps:
(i) breakable capsule that will comprise binding material inserts in the boring;
Till capsules break, apply insertion force simultaneously with in the further insertion boring in (ii) the anchor pole insertion being holed along backward rotation; And
(iii) along the forward rotation anchor pole so that expansion assembly expand, thereby lock the rock bolt in the in the boring.
Preferably, step (ii) after, the bonded material of the major part of rock bolt shank is sealed.
Preferably, backward rotation can be mixed binding material.
Preferably, breakable capsule is by backward rotation and cracked substantially.
Preferably, step (ii) after, the surface that the head of anchor pole leaves the rock stratum is 50mm basically.
Preferably, binding material is a two-part epoxy resin compound.
Description of drawings
Now will be by example, with reference to the accompanying drawings to describe the present invention preferred embodiment, in these accompanying drawings:
Fig. 1 is the lateral view according to anchor pole of the present invention;
Fig. 2 is the enlarged drawing of expansion assembly of the anchor pole of Fig. 1, and this expansion assembly is shown as the shaft that is locked to anchor pole releasedly; And
Fig. 2 is the sectional view of another embodiment of the anchor pole of Fig. 1, and this anchor pole is shown as and is installed in the boring.
The specific embodiment
Referring to accompanying drawing, anchor pole comprises elongated shaft 1 and is positioned at the expansion assembly 2 of the end of shaft.Arrange so, thereby in case anchor pole has relative forward rotation, expansion assembly just expands to lock the rock bolt in the in the boring 3 in the rock stratum.Combining two-part epoxy resin compound as common in the art, shown anchor pole uses so that anchor pole is fixed in the boring.
The chocking construction that exists with the form of pressed flat 4 is positioned at the end of rock bolt shank 1, in case and anchor pole have relative to reverse rotating, just be used for respect to anchor pole locking expansion assembly so that co-rotation, as Fig. 2 institute best image.In another embodiment (not shown), chocking construction takes to be fixedly connected to the form of the flange member of anchor pole end.
Expanding shell 5 comprises mesopore 8, is used for being slidingly matched with the threaded portion 9 of rock bolt shank 1.Threaded nut 10 is bearing in expanding shell on the shaft, thereby expansion assembly 2 can be fixed on the end of shaft.
Expansion assembly also comprises chuck 11, and this chuck 11 has the screwed hole 12 that is used for shaft 1 screw-threaded engagement, thereby anchor pole can cause moving axially of chuck with respect to the rotation of chuck.Chuck comprises the inclined-plane 13 that becomes slide key to cooperate with complementary surface on the blade 6, thereby in case anchor pole has relative to the rotating of forward, moving axially of chuck will cause the outside diffusion deformation of blade.And the cooperation between blade and the inclined-plane allows the co-rotation between expanding shell and the chuck.Chuck 11 comprises that also fluid flowing passage 14 is to allow resin flows and pass chuck and to flow on the shaft 1.
In the embodiment shown in Figure 2, expanding shell 5 has the diameter of the diameter that equals rock bolt shank 1 substantially.Because the external surface of the external surface of expanding shell and rock bolt shank is substantially aligned, so resin will more freely flow to the zone below the expanding shell in installation process.
It is desirable to, bore diameter is approximately equal to or slightly less than the diameter of expanding shell, thereby can rotate resistance between the periphery of expanding shell and boring.
As Fig. 3 institute best image,, at first frangible resin capsule (not shown) is inserted in the boring for anchor pole being fit into boring 3.Then, insert in the boring inserting the anchor pole that passes ore structure 15 to be supported, so that the resin capsule fragmentation, and resin can outwards be flow on the assembly.The backward rotation anchor pole causes chuck 11 to move with adjacency pressed flat 4 at first then, locks expansion assembly so that co-rotation with respect to anchor pole thus.
Axial force by continuing backward rotation and making progress is further inserted anchor pole in the boring then.Resin will pass passage 14 from the zone of expansion assembly 2 tops and flow on the shaft 1 around the periphery of expanding shell.Should be appreciated that because expansion assembly locks with respect to anchor pole, expansion assembly just can not be thrown off with anchor pole in the backward rotation process.
Continue the backward rotation insertion process to implement three major functions.At first, thus force resin to seal the major part of shaft 1 downwards along anchor pole.Secondly, the expansion assembly with locking effectively mixes with two-part epoxy resin compound effectively.At last, the rotation of expansion assembly 2 makes frangible resin capsule cracked basically.
In case rock bolt head 16 is left the about 50mm of rock layer surface, it just in a conventional manner forward rotation make chuck axially move away from pressed flat, thereby expansion assembly 2 is expanded to lock the rock bolt in the in the boring.
Reverse rotation should be appreciated that shown anchor pole has reduced the set-up time, because can more easily overcome the resistance when expansion assembly is slotting to pass resin.In addition, resin compound effectively mix and resin capsule cracked substantially during insertion, this has also significantly saved the set-up time.
Although described the present invention with reference to concrete example, those of ordinary skill in the art will appreciate that the present invention also is embodied as many other forms.For example, should be appreciated that, can use many other suitable chocking constructions to implement identical functions and do not break away from scope of the present invention.
Claims (22)
1. anchor pole has:
Elongated shaft;
Be in the expansion assembly of the end of described shaft, in case described anchor pole has relative forward rotation, described expansion assembly can expand and described anchor pole is locked in the boring; And
Stop device, in case described anchor pole has backward rotation, described stop device makes described expansion assembly lock and co-rotation with respect to described anchor pole.
2. anchor pole as claimed in claim 1 is characterized in that described expansion assembly comprises expanding shell, and described expanding shell has the elongated expansion blade of two or more longitudinal extensions to be used for that described anchor pole is locked in described boring.
3. anchor pole as claimed in claim 2 is characterized in that, described expanding shell cooperates slidably with described shaft, and is bearing on the described shaft by adjoining members.
4. anchor pole as claimed in claim 3 is characterized in that, described adjoining members is the nut with described shaft screw-threaded engagement.
5. as each described anchor pole in the claim 2 to 4, it is characterized in that the diameter of described expanding shell equals the diameter of described rock bolt shank substantially, thereby described binding material more freely flow to the zone of the described rock bolt shank of described expanding shell below.
6. as each described anchor pole in the claim 2 to 5, it is characterized in that, described expansion assembly comprises the chuck with described shaft screw-threaded engagement, thereby described anchor pole causes moving axially of described chuck with respect to the rotation of described chuck, described chuck has the surface that cooperates with complementary surface slide key on the described expansion blade, thereby, will cause the outside diffusion deformation of described blade in case described anchor pole has the rotation of relative forward.
7. anchor pole as claimed in claim 6 is characterized in that described chuck and expanding shell are suitable for co-rotation.
8. each described anchor pole in the claim as described above is characterized in that described stop device is arranged on the chocking construction of the described end of described rock bolt shank.
9. anchor pole as claimed in claim 8 is characterized in that, described chocking construction is the flange member that is fixedly connected to described rock bolt shank.
10. anchor pole as claimed in claim 8 is characterized in that, described chocking construction is that the part by described rock bolt shank forms.
11. anchor pole as claimed in claim 10 is characterized in that, the described end of described anchor pole is driven plain to form described chocking construction.
12., it is characterized in that each blade all comprises the clamping structure on a plurality of external surfaces that are arranged on described blade as each described anchor pole in the claim 2 to 11, described clamping structure is used for and described boring clamping engagement.
13., it is characterized in that described chuck surface is a tapering as each described anchor pole in the claim 6 to 12.
14., it is characterized in that described chuck comprises one or more fluid flowing passages as each described anchor pole in the claim 6 to 13.
15. one kind basic with reference to any one the described anchor pole in the of the present invention all embodiment shown in accompanying drawing and/or the example.
16. one kind will be installed in method in the boring of rock stratum as each described anchor pole in the claim 1 to 15, may further comprise the steps:
(i) breakable capsule that will comprise binding material inserts in the described boring;
(ii) anchor pole is inserted in the described boring till described capsules break, apply insertion force simultaneously with in the described boring of further insertion along backward rotation; And
(iii) along the described anchor pole of forward rotation so that expansion assembly expand, thereby described anchor pole is locked in the described boring.
17. method as claimed in claim 16 is characterized in that, step (ii) after, the major part of described rock bolt shank is sealed by described binding material.
18., it is characterized in that described backward rotation is mixed described binding material as claim 16 or 17 described methods.
19., it is characterized in that described breakable capsule is cracked substantially by described backward rotation as each described method in the claim 16 to 18.
20. as each described method in the claim 16 to 19, it is characterized in that, step (ii) after, the surface that the head of described anchor pole leaves described rock stratum is 50mm basically.
21., it is characterized in that described binding material is a two-part epoxy resin compound as each described method in the claim 16 to 20.
22. basic method with reference to any one the described skyhook in the of the present invention all embodiment shown in accompanying drawing and/or the example.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005200804A AU2005200804B2 (en) | 2005-02-23 | 2005-02-23 | Improved resin groutable expansion anchor and method of installing same |
| AU2005200804 | 2005-02-23 | ||
| PCT/US2006/006393 WO2006091724A2 (en) | 2005-02-23 | 2006-02-23 | Resin groutable expansion anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101151437A true CN101151437A (en) | 2008-03-26 |
| CN101151437B CN101151437B (en) | 2011-05-18 |
Family
ID=36928003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800101114A Expired - Fee Related CN101151437B (en) | 2005-02-23 | 2006-02-23 | Improved resin groutable expansion anchor and method of installing same |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080260472A1 (en) |
| CN (1) | CN101151437B (en) |
| AU (1) | AU2005200804B2 (en) |
| CA (1) | CA2599522A1 (en) |
| WO (1) | WO2006091724A2 (en) |
| ZA (1) | ZA200707108B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787893A (en) * | 2010-03-24 | 2010-07-28 | 东北大学 | Novel resin bolt installer |
| CN101672191B (en) * | 2009-10-12 | 2011-07-20 | 北京科技大学 | Mechanized method for installing resin anchor rod |
| CN102678146A (en) * | 2012-04-20 | 2012-09-19 | 中南大学 | Quickly mounted efficient energy-absorbing mining anchor rod |
| CN103291337A (en) * | 2013-05-29 | 2013-09-11 | 成都现代万通锚固技术有限公司 | Anchor rod with external expanding devices |
| CN109297462A (en) * | 2018-11-09 | 2019-02-01 | 山东科技大学 | The observation device and method of base object model rock stratum dynamic settling amount are covered on goaf |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT501875B1 (en) * | 2005-06-07 | 2008-05-15 | Alwag Tunnelausbau Gmbh | METHOD AND DEVICE FOR DRILLING, IN PARTICULAR FITTING OR TURNING OF A HOLE IN GROUND OR ROCK MATERIAL |
| CN101305161B (en) * | 2005-11-09 | 2011-06-15 | 山特维克知识产权股份有限公司 | Self drilling rock bolt |
| AT13162U1 (en) * | 2012-04-12 | 2013-07-15 | Dywidag Systems Int Gmbh | A method of drilling holes in soil and for securing an anchor in a well and apparatus therefor |
| CA2790694C (en) * | 2012-09-20 | 2015-07-21 | Robert Cousineau | Self-undercut expansion anchor insertion system |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3394527A (en) * | 1967-07-24 | 1968-07-30 | American Cyanamid Co | Reinforcing anisotropic non-homogeneous engineering structures |
| US4162133A (en) * | 1977-09-21 | 1979-07-24 | The Eastern Company | Resin reinforced expansion anchor and method of installation |
| US4194858A (en) * | 1978-09-25 | 1980-03-25 | The Eastern Company | Mine roof bolt anchor installation |
| US4299515A (en) * | 1980-01-16 | 1981-11-10 | The Eastern Company | Rock reinforcement system |
| US4413930A (en) * | 1980-11-21 | 1983-11-08 | Jennmar Corporation | Method and apparatus for combining resin bonding and mechanical anchoring of a bolt in a rock formation |
| US4437795A (en) * | 1981-11-02 | 1984-03-20 | Birmingham Bolt Company | Mine roof anchor assembly |
| US4516886A (en) * | 1984-05-14 | 1985-05-14 | The Eastern Company | Combined resin-mechanical mine roof support anchor |
| US4611954A (en) * | 1984-09-25 | 1986-09-16 | Republic Corporation | Apparatus and method for mine installations |
| US4861197A (en) * | 1987-06-15 | 1989-08-29 | Jennmar Corporation | Roof bolt system |
| US4865489A (en) * | 1988-08-08 | 1989-09-12 | Jennmar Corporation | Mine roof anchor having adjustable resin retaining washer |
| US4861198A (en) * | 1988-11-22 | 1989-08-29 | Jennmar Corporation | Expansion assembly for mine roof bolts |
| US5078547A (en) * | 1989-06-19 | 1992-01-07 | Jennmar Corporation | Expansion assembly for mine roof bolts |
| US5244314A (en) * | 1991-06-27 | 1993-09-14 | Jennmar Corporation | Expansion assembly |
| EP0694113A4 (en) * | 1993-04-16 | 1999-04-28 | Cutincoal Pty Ltd | Integrated drilling and rock bolting apparatus |
| US5501551A (en) * | 1995-03-24 | 1996-03-26 | The Eastern Company | Mine roof expansion anchor, expansible shell element used therein and method of installation |
| US5762451A (en) * | 1997-02-26 | 1998-06-09 | Jennmar Corporation | Multi-piece, split bail expansion anchor |
| US6742966B2 (en) * | 2001-01-12 | 2004-06-01 | James D. Cook | Expansion shell assembly |
| CN2608857Y (en) * | 2002-02-28 | 2004-03-31 | 杜兴军 | Time control gas range and timing valve thereof |
| CN2554353Y (en) * | 2002-06-19 | 2003-06-04 | 西山煤电集团公司西铭矿 | Expansion anchor rod with telescopic rod |
-
2005
- 2005-02-23 AU AU2005200804A patent/AU2005200804B2/en not_active Ceased
-
2006
- 2006-02-23 US US11/816,860 patent/US20080260472A1/en not_active Abandoned
- 2006-02-23 CA CA002599522A patent/CA2599522A1/en not_active Abandoned
- 2006-02-23 CN CN2006800101114A patent/CN101151437B/en not_active Expired - Fee Related
- 2006-02-23 WO PCT/US2006/006393 patent/WO2006091724A2/en active Application Filing
-
2007
- 2007-08-22 ZA ZA200707108A patent/ZA200707108B/en unknown
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672191B (en) * | 2009-10-12 | 2011-07-20 | 北京科技大学 | Mechanized method for installing resin anchor rod |
| CN101787893A (en) * | 2010-03-24 | 2010-07-28 | 东北大学 | Novel resin bolt installer |
| CN102678146A (en) * | 2012-04-20 | 2012-09-19 | 中南大学 | Quickly mounted efficient energy-absorbing mining anchor rod |
| CN103291337A (en) * | 2013-05-29 | 2013-09-11 | 成都现代万通锚固技术有限公司 | Anchor rod with external expanding devices |
| CN109297462A (en) * | 2018-11-09 | 2019-02-01 | 山东科技大学 | The observation device and method of base object model rock stratum dynamic settling amount are covered on goaf |
| CN109297462B (en) * | 2018-11-09 | 2019-10-08 | 山东科技大学 | The observation device and method of base object model rock stratum dynamic settling amount are covered on goaf |
| WO2020093576A1 (en) * | 2018-11-09 | 2020-05-14 | 山东科技大学 | Device and method for observing dynamic settlement amount of basic roof stratum overlying goaf |
Also Published As
| Publication number | Publication date |
|---|---|
| US20080260472A1 (en) | 2008-10-23 |
| WO2006091724A3 (en) | 2007-06-21 |
| AU2005200804B2 (en) | 2012-10-11 |
| WO2006091724A2 (en) | 2006-08-31 |
| CN101151437B (en) | 2011-05-18 |
| AU2005200804A1 (en) | 2006-09-07 |
| CA2599522A1 (en) | 2006-08-31 |
| ZA200707108B (en) | 2008-10-29 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20140223 |