AU5934099A - Resin injection system - Google Patents
Resin injection system Download PDFInfo
- Publication number
- AU5934099A AU5934099A AU59340/99A AU5934099A AU5934099A AU 5934099 A AU5934099 A AU 5934099A AU 59340/99 A AU59340/99 A AU 59340/99A AU 5934099 A AU5934099 A AU 5934099A AU 5934099 A AU5934099 A AU 5934099A
- Authority
- AU
- Australia
- Prior art keywords
- rock bolt
- anchoring
- formulation
- drilled hole
- nozzle
- 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.)
- Abandoned
Links
- 238000002347 injection Methods 0.000 title claims description 44
- 239000007924 injection Substances 0.000 title claims description 44
- 239000011347 resin Substances 0.000 title claims description 21
- 229920005989 resin Polymers 0.000 title claims description 21
- 239000011435 rock Substances 0.000 claims description 130
- 239000000203 mixture Substances 0.000 claims description 62
- 238000009472 formulation Methods 0.000 claims description 61
- 238000004873 anchoring Methods 0.000 claims description 60
- 238000000034 method Methods 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 8
- 230000000717 retained effect Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- VOXZDWNPVJITMN-ZBRFXRBCSA-N 17β-estradiol Chemical compound OC1=CC=C2[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CCC2=C1 VOXZDWNPVJITMN-ZBRFXRBCSA-N 0.000 claims description 3
- 238000005755 formation reaction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
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
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
-
- 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
- E21D21/0053—Anchoring-bolts in the form of lost drilling rods
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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Description
e'*
AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT Applicant(s): THE BROKEN HILL PROPRIETARY COMPANY LIMITED Invention Title: RESIN INJECTION SYSTEM
I
The following statement is a full description of this invention, including the best method of performing it known to me/us: -1-
I.
2 RESIN INJECTION SYSTEM The present invention relates to anchoring rock bolts in drilled holes in rock formations by means of chemical resin systems or chemical or cement grouts or other suitable formulations (hereinafter collectively referred to as "anchoring formulation(s)").
Rock bolt systems that are based on the use of rock bolts are used to stabilise rock formations in a wide range of situations, such as underground and surface mines, tunnels and cuttings, and rock bolt systems have achieved a high acceptance in both the mining and civil engineering industries.
In any given application, the purpose of a rock bolt system that is anchored in a rock formation is to apply a clamping or confining action to a rock mass to control deformation of the rock mass and to enhance the strength of the rock mass. In other words, the purpose of a rock bolt system is to allow load to be transferred from a rock mass, "through the anchoring formulation, to the rock bolt.
A conventional procedure for installing a rock bolt go. system includes the following steps: Drill a hole in a rock formation to a required depth.
Push a cartridge of an anchoring formulation into the drilled hole with a rock bolt until the cartridge reaches the end of the hole and the rock bolt penetrates the cartridge and releases the anchoring formulation.
H:\Maria\Keep\BHP PP7063 RESIN INJECTION SYSTE24.doc 11/11/99 3 Rotate the rock bolt to mix the anchoring formulation.
After the anchoring formulation sets, typically within a minute, rotate a tensioning nut on the rock bolt until the nut is tight up against a bearing plate against the rock formation and a tension is generated in the rock bolt.
The present invention relates particularly, although by no means exclusively, to: a seal member that facilitates injection of an anchoring formulation into a drilled hole to anchor a rock bolt in the hole; a method of injecting an anchoring formulation into a drilled hole to anchor a rock bolt in the hole which is based on the use of the seal member; a rock bolt system which includes the seal "member; and a rock bolt system which includes a resin mixing system.
According to the present invention there is provided a seal member for use in a method of injecting an anchoring formulation into a drilled hole to anchor a rock bolt in the hole, which rock bolt has a passageway that extends at least partially along the length of the rock bolt, which seal member includes: a first chamber that has a side wall and a forward facing opening which can receive a rearward end of the rock bolt to thereby H:\Maria\Keep\BHp PP7063 RESIN INJECTION SYSImEN.doc 11/11/99 4 locate the seal member on the rock bolt; a second chamber that has a side wall and a rearward facing opening which can receive a nozzle for injecting the anchoring formulation; and a base wall which separates the chambers and has one or more than one opening which can allow the anchoring formulation to flow from the second chamber into the passageway of the rock bolt.
Preferably the side wall of the second chamber includes an inwardly facing surface at the rearward facing opening which forms a seal against the nozzle when the nozzle is located in the second chamber.
Preferably the second chamber defines a mixing chamber for the anchoring formulation. This is an important feature in situations where the anchoring formulation is a two or more component mixture and the components are supplied separately and require mixing together.
In a situation where the nozzle includes one ormore than one radial injection outlet it is preferred that the diameter of the second chamber be greater than that of the injection nozzle in the region of the outlet or outlets so that in use there is a clearance between the nozzle and the side wall of the second chamber in this region or regions of the injection nozzle. The radial injection outlet or outlets contribute to mixing the anchoring formulation in the second chamber.
According to the present invention there is also provided a method of injecting an anchoring formulation H:\Maria\Keep\BHP PP7063 RESIN INJECTION SYSTEM.doc 11/11/99 _I \I into a drilled hole in a rock formation to anchor in the hole a rock bolt that has a passageway that extends at least partially along the length of the rock bolt, which method includes: positioning in the drilled hole a rock bolt that has the seal member that is described in the preceding paragraphs located on the rearward end of the rock bolt; positioning a drive head of a drill rig in relation to the rock bolt so that the drive head engages the rock bolt and so that an injection nozzle which forms part of or is retained by the drill rig extends into the second chamber of the seal member; and injecting the anchoring formulation into the drilled hole via the injection nozzle and the passageway in the rock bolt so that the anchoring formulation fills a section of an annular space between the rock bolt and a wall that defines the drilled hole.
25 Preferably the method includes operating the drill rig to rotate the rock bolt about its longitudinal axis at least while injecting the anchoring formulation in step to promote mixing of the anchoring formulation in the annular space.
In an alternative arrangement it is preferred that the rock bolt includes a static mixer which mixes the anchoring formulation as it is injected in step According to the present invention there is provided a method of injecting an anchoring formulation into a drilled hole formed by a self-drilling rock bolt in H:\Maria\Keep\BHp PP7063 RESIN INJECTION SYSTEM.doc 11/11/99 6 a rock formation, which rock bolt has a passageway that extends at least partially along the length of the rock bolt, which method includes the steps of: positioning a drive head of a drill rig in relation to the rock bolt so that the drive head engages the rock bolt and so that an injection nozzle which forms part of or is retained by the drill rig extends into the second chamber of the seal member that is described in the preceding paragraphs and is located on the rearward end of the rock bolt; operating the drill rig to rotate the rock bolt about its longitudinal axis and form a drilled hole and, whilst drilling, injecting water into the drill hole via the injection nozzle and the passageway in the rock bolt to flush cuttings from the drilled hole as it is being formed; and after forming the drilled hole, injecting the anchoring formulation into the drilled 25 hole via the injection nozzle and the passageway in the rock bolt so that the anchoring formulation fills a section of an annular space between the rock bolt and the wall of the drilled hole.
Preferably the method includes operating the drill rig to rotate the rock bolt about its longitudinal axis at least while injecting the anchoring formulation in step to promote mixing of the anchoring formulation in the annular space.
As noted above, alternatively the anchoring H:\Maria\Keep\BHP PP7063 RESIN INJECTION SYSTEM.doc 11/11/99 7 formulation may be mixed by a static mixer located in the passageway in the rock bolt as the anchoring formulation is injected in step Preferably the nozzle includes a central passageway with an outlet at a forward end.
Preferably the nozzle further includes one or more than one additional passageway that is parallel to the central passageway.
Preferably the or at least one additional passageway is closed at the forward end of the nozzle and includes a radial outlet.
With the above described arrangement water and the anchoring formulation may be injected through different passageways. Moreover, in situations where the anchoring formulation is a two or more than two component product the components may be injected through difficult passageways.
According to the present invention there is also provided a rock bolt system which includes, in combination, a rock bolt having a passageway extending at least 25 partially along the length of the rock bolt, the abovedescribed seal member, a drill rig, and an injection nozzle which forms part of or is retained by the drill rig.
Preferably the injection nozzle has the plurality 30 of passageways as described above.
Preferably the nozzle is stationary relative to the drive head of the drill rig.
Preferably the rock bolt includes a static mixer located in the passageway in the rock bolt.
H:\Mria\Keep\BHP PP7063 RESIN INJECTION SYSTEM.doc 11/11/99 8 The present invention is described further with reference to the accompanying drawings, of which: Figure 1 is a cross section which illustrates a preferred embodiment of a seal member in accordance with the present invention fitted onto a rear end of a rock bolt and with an injection nozzle extending into the seal member; Figure 2 is a cross section similar to Figure 1 and further illustrating the location of a drive head of a drill rig; Figure 3 is a cross section along the line A-A of Figure 1; Figure 4 is a cross section along the line B-B of Figure 1; Figure 5 is a cross section along the line C-C of Figure 1; Figure 6 is a detailed view of the circled region identified by the letter A in Figure 1; and Figure 7 is a cross-section which illustrates the seal member shown in Figures 1-6 located on a rock bolt that has a static mixer in the central passageway of the rock bolt.
The figures illustrate a preferred embodiment of a seal member 3 in accordance with the present invention located on the end of a self-drilling rock bolt As shown in Figure 1, the rock bolt 5 is a selfdrilling, self-tapping rock bolt of the type described in Australian complete application 78947/98 in the name of the H:\Maria\Keep\BHP PP7063 RESIN INJECTION SYSTE4.doc 11/11/99 9 applicant, and the disclosure in that complete application is incorporated herein by cross-reference. The rock bolt 3 may be of any other suitable configuration.
The rock bolt 3 is manufactured in accordance with the disclosure in International application PCT/AU93/00486 in the name of the applicant and the disclosure in that International application is incorporated herein by cross-reference. The rock bolt 3 may be manufactured by any other suitable method.
The rock bolt 5 shown in Figure 1 includes: a central passageway 7 that extends along the length of the rock bolt 5 from a rearward end 11 to a forward end (not shown); an external thread 13 formed on a rearward section of the rock bolt an external rib profile formed on the remainder of the length of the rock bolt 25 a barrier member in the form of a washer 17 welded to the rock bolt 5 a short distancefrom the rearward end 11; and a tensioning nut 21 threaded on the thread 13.
The rock bolt 5 shown in Figure 7 includes the above components and further includes a static mixer 61 located in the passageway 7.
The seal member 3 is formed from a plastic material or any other suitable material and includes a H:\Maria\Keep\BHP PP7063 RESIN INJECTION SYSTEN.doc 11/11/99 10 forward opening chamber 23 and a rearward opening chamber separated by a transverse base wall 27 that has a central opening 29.
The chambers 23, 25 are defined by the base wall 27 and the cylindrical walls 31. As can be seen in Figure 1: the forward opening chamber 23 is dimensioned to receive the rearward end 11 of the rock bolt 5 so that in use the seal member 3 fits snugly on the rock bolt 5; and the rearward opening chamber 25 is dimensioned to receive a forward part of a nozzle 35 for injecting an anchoring formulation.
The nozzle 35 includes a central passageway 37 that has an opening at a forward end of the nozzle 35 and an array of outer parallel passageways 39 that are closed at the forward end of the nozzle 35 and have a series of radial openings 41. The arrangement of multiple passageways 37, 39 enables a number of components of a two or more than two component anchoring formulation to be delivered separately.
The diameter of the rearward opening chamber is selected to be larger than that of the outer diameter of 30 the forward part of the nozzle 35 so that there is a clearance between the nozzle 35 and the side wall 31 of the second chamber 25. As a consequence, the unoccupied space of the second chamber 25 defines a mixing chamber.
This is a particularly useful feature where two or more than two component anchoring formulations are used and there is a need to supply the components separately and H:\Maria\Keep\SHP PP706) RESIN INJECTION SYSTEM.doc 11/11/99 11 to mix the components together immediately before delivering the mixed formulations to the drilled hole.
The seal member 3 further includes a sealing ring 43 which has an inwardly facing sealing surface 43 which contacts and forms a tight seal against the nozzle The dimensions of the seal member 3 and the nozzle 35 are selected so that the assembly can be located in a central socket 45 of a drill head 47 of a drill rig.
In use, in order to anchor the rock bolt 5 shown in Figure 1 in a pre-drilled hole (not shown), the rock bolt 5, with the seal member 3 fitted on the rearward end 11 as shown in Figure 1, is positioned in the drilled hole and supported by the drill rig as shown in Figure 2. In this position the drive head 47 engages the nut 21 and the nozzle 35 extends into the second chamber 25. At this point, anchoring formulation is injected through the nozzle 35 into the second chamber 25 and is mixed therein and flows through the opening 29 in the base wall 27 and along the passageway 7 in the rock bolt 5 and into the drilled :0 hole. The injected anchoring formulation fills the gap between the rock bolt 5 and the drilled hole. Actuation of 25 the drill rig causes the rock bolt 5 to rotate about its longitudinal axis in the drilled hole during and after injection of the anchoring formulation promotes thorough mixing of the anchoring formulation. After a short time period (depending on the anchoring formulation) the 30 anchoring formulation sets sufficiently to support the rock bolt 5 in the drilled hole and the drill rig may be actuated to tension the rock bolt 000000 In use, in order to self-drill a hole and thereafter anchor the rock bolt 5 shown in Figure 1 in the hole, the rock bolt 5, with the seal member fitted on the rearward end 11 as shown in Figure i, is supported by the H:\Maria\Keep\BHP PP7063 RESIN INJECTION SYSTEM.doc 11/11/99 12 drill rig as shown in Figure 2. In this position the drive head 47 engages the nut 21 and the nozzle 35 extends into the second chamber 25. The forward end of the rock bolt is located in a pilot hole (not shown) and the drill rig is actuated to rotate the rock bolt 5 and progressively form a drilled hole. As the hole is being drilled water is injected through the nozzle 35 and along the passageway 7 in the rock bolt 5 and flushes cuttings from the drilled hole. After the hole has been drilled, anchoring formulation is injected through the nozzle 35 into the second chamber 25 and is mixed therein and flows through the opening 29 in the base wall 27 and along the passageway 7 in the rock bolt 5 and into the drilled hole. The injected anchoring formulation fills the gap between the rock bolt 5 and the drilled hole. Actuation of the drill rig causes the rock bolt 5 to rotate about its longitudinal axis in the drilled hole during and after injection of the anchoring formulation promotes thorough mixing of the anchoring formulation. After a short time period (depending on the anchoring formulation) the anchoring formulation sets sufficiently to support the rock bolt 5 in the drilled hole and the drill rig may be actuated to o tension the rock bolt 25 Many modifications may be made to the preferred embodiment of the present invention described above without departing from the spirit and scope of the present invention.
30 By way of example, whilst the rock bolt 5 shown :in the drawings has a central passageway 7, it is noted that the present invention is not so limited and extends to rock bolts having any suitable construction and location of passageway or passageways.
H:\Maria\Keep\BHP PP7063 RESIN INJECTION SYSTEM.doc 11/11/99
Claims (13)
- 2. The seal member defined in claim 1 wherein the side wall of the second chamber includes an inwardly facing surface at the rearward facing opening which forms a seal against the nozzle when the nozzle is located in the second chamber.
- 3. The seal member defined in claim 1 or claim 2 wherein the second chamber defines a mixing chamber for the anchoring formulation. oeoo•
- 4. The seal member defined in any one of the preceding claims wherein, in a situation where the nozzle includes one or more than one radial injection outlet, the H:\Maria\Keep\BP PP706) RESIN INJECTION SYSTEM.doc 11/11/99 14 diameter of the second chamber is greater than that of the injection nozzle in the region of the outlet or outlets so that in use there is a clearance between the nozzle and the side wall of the second chamber in this region or regions of the injection nozzle. A method of injecting an anchoring formulation into a drilled hole in a rock formation to anchor in the hole a rock bolt that has a passageway that extends at least partially along the length of the rock bolt, which method includes: positioning in the drilled hole a rock bolt that has the seal member defined in any one of the preceding claims located on the rearward end of the rock bolt; positioning a drive head of a drill rig in relation to the rock bolt so that the drive head engages the rock bolt and so that an injection nozzle which forms part of or is retained by the drill rig extends into the o second chamber of the seal member; and injecting the anchoring formulation into the drilled hole via the injection nozzle and ***the passageway in the rock bolt so that the .e anchoring formulation fills a section of an annular space between the rock bolt and a wall that defines the drilled hole.
- 6. The method defined in claim 5 includes operating the drill rig to rotate the rock bolt about its longitudinal axis at least while injecting the anchoring formulation in step to promote mixing of the anchoring formulation in the annular space. H:\Maria\Keep\BHp PP7063 RESIN INJECTION SYSTEN.doc 11/11/99 15
- 7. The method defined in claim 5 wherein the rock bolt includes a static mixer which mixes the anchoring formulation as it is injected in step
- 8. A method of injecting an anchoring formulation into a drilled hole formed by a self-drilling rock bolt in a rock formation, which rock bolt has a passageway that extends at least partially along the length of the rock bolt, which method includes the steps of: positioning the drive head of the drill rig in relation to the rock bolt so that the drive head engages the rock bolt and so that the injection nozzle which forms part of or is retained by the drill rig extends into the second chamber of the seal member defined in any one of claims 1 to 4 and is located on the rearward end of the rock bolt; operating the drill rig to rotate the rock bolt about its longitudinal axis and form a drilled hole and, whilst drilling, injecting water into the drill hole via the injection nozzle and the passageway in the rock bolt to flush cuttings from the drilled hole as- *it is being formed; and a. after forming the drilled hole, injecting the anchoring formulation into the drilled hole via the injection nozzle and the passageway in the rock bolt so that the anchoring formulation fills a section of an annular space between the rock bolt and the wall of the drilled hole.
- 9. The method defined in claim 8 includes H:\Maria\Keep\BHP PP7063 RESIN INJECTION SYSTEN.doc 11/11/99 16 operating the drill rig to rotate the rock bolt about its longitudinal axis at least while injecting the anchoring formulation in step to promote mixing of the anchoring formulation in the annular space. The method defined in claim 8 includes mixing the anchoring formulation by a static mixer located in the passageway in the rock bolt as the anchoring formulation is injected in step
- 11. A rock bolt system which includes, in combination, a rock bolt having a passageway extending at least partially along the length of the rock bolt, the seal member defined in any one of claims 1 to 4, a drill rig, and an injection nozzle which forms part of or is retained by the drill rig.
- 12. The rock bolt system defined in claim 11 wherein the injection nozzle has a plurality of passageways. m
- 13. The rock bolt system defined in claim 11 or claim 12 wherein the nozzle is stationary relative to the drive head of the drill rig.
- 14. The rock bolt system defined in any one of. claims 11 to 13 wherein the rock bolt includes a static mixer located in the passageway in the rock bolt. 30 15. A seal member substantially as hereinbefore described with reference to the accompanying drawings.
- 16. A method of injecting an anchoring formulation into a drilled hole substantially as hereinbefore described with reference to the accompanying drawings. H:\Maria\Keep\BHP PP7063 RESIN INJECTION SYSTEm.doc 11/11/99 17
- 17. A rock bolt system substantially as hereinbefore described with reference to the accompanying drawings. Dated this llth day of November 1999 THE BROKEN HILL PROPRIETARY COMPANY LIMITED By Its Patent Attorneys GRIFFITH HACK Fellows Institute of Patent and Trade Mark Attorneys of Australia *s 0S se 0* H:\Maria\Keep\BHP PP7063 RESIN INJECTION SYSTEMdoc 11/11/99
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU59340/99A AU5934099A (en) | 1998-11-11 | 1999-11-11 | Resin injection system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPP7063 | 1998-11-11 | ||
| AUPP7063A AUPP706398A0 (en) | 1998-11-11 | 1998-11-11 | Resin injection system |
| AU59340/99A AU5934099A (en) | 1998-11-11 | 1999-11-11 | Resin injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU5934099A true AU5934099A (en) | 2000-05-18 |
Family
ID=25632327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU59340/99A Abandoned AU5934099A (en) | 1998-11-11 | 1999-11-11 | Resin injection system |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU5934099A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003231588B2 (en) * | 2002-08-02 | 2004-09-30 | DSI Underground Australia Pty Limited | Rock Bolt Post Grouting Apparatus |
| WO2007059580A1 (en) * | 2005-11-24 | 2007-05-31 | Peter Andrew Gray | Self drilling rock bolt |
| US8753041B2 (en) | 2008-09-18 | 2014-06-17 | Peter Andrew Gray | Injection, sealing valving and passageway system |
| WO2018096508A1 (en) * | 2016-11-28 | 2018-05-31 | Orica Mining Services South Africa (Pty) Ltd | Self-drilling rock bolt with internal mixer |
| CN110030022A (en) * | 2019-03-28 | 2019-07-19 | 华北科技学院 | A kind of hole sealing device and method |
| CN111577359A (en) * | 2020-04-07 | 2020-08-25 | 山西海洁机电科技有限公司 | Energy storage anchor rod and anchoring and grouting method |
| CN112727515A (en) * | 2021-01-14 | 2021-04-30 | 陕西陕煤曹家滩矿业有限公司 | Rapid mounting, stirring and filling integrated device for anchoring agent and use method thereof |
| CN113090313A (en) * | 2021-04-30 | 2021-07-09 | 中煤科工开采研究院有限公司 | Multifunctional anchor rod |
-
1999
- 1999-11-11 AU AU59340/99A patent/AU5934099A/en not_active Abandoned
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003231588B2 (en) * | 2002-08-02 | 2004-09-30 | DSI Underground Australia Pty Limited | Rock Bolt Post Grouting Apparatus |
| WO2007059580A1 (en) * | 2005-11-24 | 2007-05-31 | Peter Andrew Gray | Self drilling rock bolt |
| AU2006317519B2 (en) * | 2005-11-24 | 2012-11-29 | Peter Andrew Gray | Self drilling rock bolt |
| US8753041B2 (en) | 2008-09-18 | 2014-06-17 | Peter Andrew Gray | Injection, sealing valving and passageway system |
| WO2018096508A1 (en) * | 2016-11-28 | 2018-05-31 | Orica Mining Services South Africa (Pty) Ltd | Self-drilling rock bolt with internal mixer |
| CN110030022A (en) * | 2019-03-28 | 2019-07-19 | 华北科技学院 | A kind of hole sealing device and method |
| CN111577359A (en) * | 2020-04-07 | 2020-08-25 | 山西海洁机电科技有限公司 | Energy storage anchor rod and anchoring and grouting method |
| CN112727515A (en) * | 2021-01-14 | 2021-04-30 | 陕西陕煤曹家滩矿业有限公司 | Rapid mounting, stirring and filling integrated device for anchoring agent and use method thereof |
| CN113090313A (en) * | 2021-04-30 | 2021-07-09 | 中煤科工开采研究院有限公司 | Multifunctional anchor rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK5 | Application lapsed section 142(2)(e) - patent request and compl. specification not accepted |