CN112360527A - Anchoring agent compaction device, anchor rod and using method - Google Patents
Anchoring agent compaction device, anchor rod and using method Download PDFInfo
- Publication number
- CN112360527A CN112360527A CN202011250786.4A CN202011250786A CN112360527A CN 112360527 A CN112360527 A CN 112360527A CN 202011250786 A CN202011250786 A CN 202011250786A CN 112360527 A CN112360527 A CN 112360527A
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- China
- Prior art keywords
- anchor rod
- anchoring
- metal sleeve
- rod
- anchoring agent
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- 238000004873 anchoring Methods 0.000 title claims abstract description 93
- 238000005056 compaction Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 68
- 239000002184 metal Substances 0.000 claims abstract description 50
- 238000005553 drilling Methods 0.000 claims abstract description 19
- 239000011435 rock Substances 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 7
- 230000001050 lubricating effect Effects 0.000 claims description 25
- 239000011324 bead Substances 0.000 claims description 16
- 239000003245 coal Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 206010024796 Logorrhoea Diseases 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor 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
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
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
An anchoring agent compaction device, an anchor rod and a using method are suitable for being used in places where mine roof rock stratum structures develop and roof lithology is complex. The anchoring agent compaction device comprises a metal sleeve, wherein the inner diameter of the metal sleeve is matched with the size of an anchor rod, an outer ring sleeve head capable of rotating in the radial direction is arranged on the outer side of the metal sleeve, the metal sleeve and the outer ring sleeve head form a bearing sleeve structure, a plurality of fixing screws used for fastening the metal sleeve and the anchor rod are arranged at the position, which is not covered by the outer ring sleeve head, of the metal sleeve, and the metal sleeve is fixed on the anchor rod by screwing the fixing screws and fixing the metal sleeve between transverse ribs of the anchor rod; one or more anchoring agent compacting devices are arranged on the rod body of the anchor rod. The solid agent compacting device has the advantages of simple structure and convenience in use, the centering degree of the anchor rod in a drilling hole during installation can be guaranteed, the anchoring force of the anchor rod can be integrally improved, the deformation of surrounding rock can be better controlled, and the anchoring and supporting efficiency under the complex lithology condition can be effectively improved.
Description
Technical Field
The invention relates to an anchoring agent compacting device, an anchor rod and a using method, in particular to an anchoring agent compacting device, an anchor rod and a using method which are suitable for places with mine roof rock stratum structure development and roof lithology complexity, and belongs to the technical field of mine roadway support.
Background
The anchor rod anchoring technology is widely applied to supporting engineering of a coal mine tunnel as an effective reinforcing mode, and integrity and stability of surrounding rocks of the tunnel can be improved. However, in the construction process, due to the fact that an anchoring cavity or defect occurs in the anchoring section of the anchor rod caused by human or natural factors and the like, the anchoring force cannot meet the design requirement, certain hidden danger is caused to the safety of an anchoring system, even roof disasters occur in the construction and use processes of a roadway, and complex reinforcing and supporting measures need to be taken to ensure the safety of roadway construction and use. Therefore, in the process of anchoring and supporting the roadway, the anchoring agent is immediately compacted, the bonding performance of the anchoring agent is exerted to the maximum extent, and the method has very important significance for ensuring the stability and safety of the roadway top plate.
The existing coal mine roadway support has widely adopted anchoring support, most of anchoring media are anchoring agents, the anchoring agents have the anchoring defect due to the fact that packaging bags exist, the lithology of a coal mine roof is complex and changeable, composite roofs are commonly found on the roof of a roadway, holes are prone to occurring in drilled holes when a drilling machine passes through different rock stratums when drilling holes, the anchoring holes and the defects become hidden dangers of the anchoring support, a method for reducing anchoring quality caused by the anchoring agents and the lithology in the process of the anchoring support is not solved at present, therefore, a method which can be suitable for coal mine roadway anchoring support engineering is urgently needed to be provided, the compactness of an anchoring section of an anchoring rod is improved and the anchoring force is increased on the basis of the existing conditions, the anchoring quality of the coal mine support is improved, and the safety of the roadway is ensured.
Disclosure of Invention
The technical problem is as follows: aiming at the technical purpose, the anchoring agent compacting device, the anchor rod and the use method are simple in structure and convenient to use, the centering degree of the anchor rod in a drilled hole during installation can be guaranteed, the anchoring force of the anchor rod can be integrally improved, the deformation of surrounding rock can be better controlled, and the anchoring and supporting efficiency under the complex lithology condition can be effectively improved.
In order to achieve the technical purpose, the anchoring agent compacting device comprises a metal sleeve, the inner diameter of the metal sleeve is matched with the size of the anchor rod, an outer ring sleeve head capable of rotating in the radial direction is arranged on the outer side of the metal sleeve, the metal sleeve and the outer ring sleeve head form a bearing sleeve structure, a plurality of fixing screws used for fastening the metal sleeve and the anchor rod are arranged at the position, which is not covered by the outer ring sleeve head, of the metal sleeve, and the metal sleeve is fixed on the anchor rod by screwing the fixing screws and fixing the metal sleeve between transverse ribs of the anchor rod.
A sealed rotary cavity is arranged between the outer ring sleeve head and the metal sleeve pipe head, multiple layers of lubricating beads are arranged in the rotary cavity to realize rotation, and a retainer is arranged between the lubricating beads to prevent the lubricating beads on different layers from interfering when the multiple layers of lubricating beads are arranged.
The retainer is arranged between the outer ring sleeve head and the metal sleeve, 2 rows of 24 round holes for accommodating the lubricating balls are uniformly distributed in the retainer, the diameter of each round hole is larger than the diameter of each lubricating ball by 0.3mm, and the rotation of the lubricating balls is not influenced.
The fixing screws arranged on the metal sleeve are divided into two rows, 4 fixing screws are arranged in each row, and the row distance of the fixing screws is larger than the transverse rib distance by 11 mm; the lubricating balls are arranged in two rows, and the diameter of each lubricating ball is 1 mm.
A baffle and a rubber sealing ring are arranged above the sealed rotary cavity of the outer ring sleeve head, so that foreign objects are prevented from entering the rotary cavity, and the inner structure of the rotary cavity is prevented from being damaged in construction.
The inner diameter of the metal sleeve is 1.5mm larger than the diameter of the anchor rod, and the diameter of the sleeve head of the outer ring is the same as the diameter of the drilled hole.
The utility model provides an use stock of anchoring agent compaction device, including the stock, be equipped with one or more anchoring agent compaction device on the body of rod of stock, the stock afterbody is equipped with the structure of being connected with hydraulic jumbolter, the outer loop pullover of anchoring agent compaction device is hugged closely the drilling wall and is fixed during the use, metal casing follows the stock and rotates and rotate, multilayer lubrication pearl through between outer loop pullover and the metal casing realizes relative motion, the baffle at metal casing top and rubber seal effectively prevent to stir the excessive drilling of anchoring agent in the garrulous anchoring agent package or get into rotatory cavity simultaneously.
When the anchor rod body is short, only an anchoring agent compacting device needs to be arranged on the rod body, and the anchoring agent compacting device is arranged at the rear section of the anchor rod body; when the stock body of rod is longer, need set up a plurality of anchor agent compaction devices on the body of rod, install the anchor agent compaction device at the back end of the stock body of rod and still set up anchor agent compaction device at body of rod middle section interval according to the length of stock.
A use method of the anchor rod comprises the following steps:
a. determining the anchoring length according to the design requirement of coal mine anchor rod support, determining the required anchoring dosage, and manufacturing the required anchoring agent bag according to the preset drilling size;
b. installing an anchoring agent compacting device at a corresponding position of the anchor rod, screwing down fixing screws, fixing two rows of fixing screws between transverse ribs of the anchor rod, and determining that the length of the front end of the anchor rod is 1-3 cm larger than a designed anchoring length value by using the anchoring agent lifting compacting device;
c. the anchor agent bag and the anchor rod are sequentially placed into the drilled hole, the technical requirement that the anchor rod is placed in the middle is not required to be implemented when the anchor rod is installed, the hydraulic anchor rod drilling machine is directly used for drilling the anchor rod, the tray and the screws are installed, and the installation of the anchor rod is completed.
Advantageous effects
When the device is used for anchoring and supporting operation, the anchoring quality is improved by compacting the anchoring agent, the risk of cavities and defects at the anchoring section is reduced, and the anchoring quality is improved, so that the design requirement of anchor rod supporting is met, and the roadway supporting is ensured to meet the requirements of safety and production; the invention effectively ensures the centering degree of the anchor rod in the drilled hole during the installation, reduces the technical difficulty during the installation of the anchor rod, and simultaneously can ensure the centering of the anchor rod when the anchor rod is rotated during the installation process, and the head of the anchor rod can not sway; the anchor rod can provide certain friction force when exerting efficiency, integrally improves the anchoring force of the anchor rod, can better control the deformation of surrounding rocks, effectively improves the anchoring and supporting efficiency under the condition of complex lithology, and provides guarantee for mine safety production.
Drawings
FIG. 1 is a schematic view of the arrangement of the rock bolt of the present invention using an anchoring agent compaction device;
FIG. 2 is a schematic elevational view of the anchoring agent compaction device of the present invention;
fig. 3 is a schematic top view of the anchor compacting apparatus of the present invention.
In the figure: 1-an anchoring agent compaction device; 2-an anchoring agent package; 3-anchor rod; 4-hydraulic jumbolter; 5-metal sleeve; 6-outer ring sleeve head; 7-a cage; 8-lubricating beads; 9-fixing screws; 10-a baffle plate;
Detailed Description
An embodiment of the invention is further described below with reference to the accompanying drawings:
as shown in fig. 1, the anchoring agent compacting device of the invention comprises a metal sleeve 5, the inner diameter of the metal sleeve 5 is matched with the size of the anchor rod, an outer ring sleeve head 6 capable of rotating radially is arranged on the outer side of the metal sleeve 5, the metal sleeve 5 and the outer ring sleeve head 6 form a bearing sleeve structure, as shown in fig. 2 and fig. 3, a sealed rotating cavity is arranged between the outer ring sleeve head 6 and the head of the metal sleeve 5, a plurality of layers of lubricating beads 9 are arranged in the rotating cavity to realize rotation, a retainer 7 is arranged between the lubricating beads 9 to prevent interference between the lubricating beads 9 of different layers when the lubricating beads 9 are arranged, the retainer 7 is arranged between the outer ring sleeve head 6 and the metal sleeve 5, 2 rows of 24 round holes for arranging the lubricating beads 8 are uniformly distributed in the retainer 7, the diameter of the round holes is larger than the diameter of the lubricating beads 8 by 0.3mm, no influence is caused on the rotation of the lubricating beads 8, a plurality of fixing screws 9 for fastening the metal sleeve 5 with the anchor rod by itself without, the metal sleeve 5 is fixed on the anchor rod 3 by screwing the fixing screws 9 between the transverse ribs of the anchor rod 3, the fixing screws 9 arranged on the metal sleeve 5 are divided into two rows, each row is provided with 4 fixing screws, and the row distance of the fixing screws 9 is larger than the distance of the transverse ribs by 11 mm; lubricated pearl 8 set up two rows, and lubricated pearl 8 diameter is 1mm, metal casing 5's internal diameter is 1.5mm bigger than 3 diameters of stock, outer loop pullover 6 diameter matches the same with the drilling, outer loop pullover 6 sealed rotatory cavity top is equipped with baffle 10 and rubber seal for prevent that the foreign object from getting into rotatory chamber, prevent to damage rotatory intracavity structure in the construction simultaneously.
The utility model provides an stock with anchoring agent compaction device, including stock 3, be equipped with one or more anchoring agent compaction device 1 on the body of rod of stock 3, 3 afterbody of stock are equipped with the structure of being connected with hydraulic jumbolter 4, the outer loop pullover 6 of anchoring agent compaction device 1 is hugged closely the drilling wall and is fixed during the use, metal casing 5 follows stock 3 and rotates and rotate, realize relative motion through the multilayer lubrication pearl 8 between outer loop pullover 6 and the metal casing 5, baffle 10 and the rubber seal at metal casing 5 top effectively prevent to stir the excessive drilling of anchoring agent in the garrulous anchoring agent package 2 or get into rotatory cavity simultaneously. When the rod body of the anchor rod 3 is short, only one anchoring agent compacting device 1 needs to be arranged on the rod body, and the anchoring agent compacting device 1 is arranged at the rear section of the rod body of the anchor rod 3; when 3 bodies of rod of stock are longer, need set up a plurality of anchor agent compaction device 1 on the body of rod, install the anchor agent compaction device 1 of the back end at 3 bodies of rod of stock and still set up anchor agent compaction device 1 at body of rod middle section interval according to the length of stock 3 outward.
The use method of the anchor rod provided with the anchoring agent compaction device comprises the following steps:
a. determining the anchoring length according to the design requirement of coal mine anchor rod support, determining the required anchoring dosage, and manufacturing the required anchoring agent bag 2 according to the preset drilling size;
b. installing the anchoring agent compacting device 1 at the corresponding position of the anchor rod 3, screwing the fixing screws 9, fixing the two rows of fixing screws 9 between the transverse ribs of the anchor rod, and determining that the length of the front end of the anchor rod is 1-3 cm larger than the designed anchoring length value by the anchoring agent lifting compacting device 1;
c. the anchor agent bag 2 and the anchor rod 3 are sequentially placed into the drilled hole, the technical requirement that the anchor rod is placed in the middle is not required to be implemented when the anchor rod is installed, the hydraulic anchor rod drilling machine 4 is directly used for drilling the anchor rod, and the tray and the screws are installed to complete installation of the anchor rod.
Claims (9)
1. An anchoring agent compaction device characterized by: it includes metal sleeve (5), the internal diameter and the stock size matching of metal sleeve (5), metal sleeve (5) outside is equipped with outer loop pullover (6) that can radially rotate, metal sleeve (5) and outer loop pullover (6) form the bearing housing structure, metal sleeve (5) are not equipped with a plurality of fixed screws (9) that are used for its self and stock fastening by outer loop pullover (6) cover department, thereby fix metal sleeve (5) on stock (3) between the horizontal rib of stock (3) through screwing fixed screw (9).
2. The anchoring agent compacting device of claim 1, wherein: a sealed rotating cavity is arranged between the outer ring sleeve head (6) and the head of the metal sleeve (5), a plurality of layers of lubricating beads (9) are arranged in the rotating cavity to realize rotation, and a retainer (7) is arranged between the lubricating beads (9) to prevent the lubricating beads (9) on different layers from interfering when the plurality of layers of lubricating beads (9) are arranged.
3. The anchor compacting apparatus of claim 2, wherein: the retainer (7) is arranged between the outer ring sleeve head (6) and the metal sleeve (5), 2 rows of 24 round holes for arranging the lubricating balls (8) are uniformly distributed in the retainer (7), the diameter of each round hole is larger than the diameter of each lubricating ball (8) by 0.3mm, and the rotation of each lubricating ball (8) is not influenced.
4. The anchoring agent compacting device of claim 3, wherein: the fixing screws (9) arranged on the metal sleeve (5) are divided into two rows, 4 fixing screws are arranged in each row, and the row distance of the fixing screws (9) is larger than the transverse rib distance by 11 mm; the lubricating balls (8) are arranged in two rows, and the diameter of each lubricating ball (8) is 1 mm.
5. The anchoring agent compacting device of claim 1, wherein: a baffle (10) and a rubber sealing ring are arranged above the sealed rotary cavity of the outer ring sleeve head (6) to prevent foreign objects from entering the rotary cavity and simultaneously prevent the inner structure of the rotary cavity from being damaged in construction.
6. The anchoring agent compacting device of claim 1, wherein: the inner diameter of the metal sleeve (5) is 1.5mm larger than the diameter of the anchor rod (3), and the diameter of the outer ring sleeve head (6) is matched with the diameter of a drilled hole.
7. A rock bolt using the anchoring agent compaction device of claim 1, wherein: including stock (3), be equipped with one or more anchoring agent compaction device (1) on the body of rod of stock (3), stock (3) afterbody is equipped with the structure of being connected with hydraulic jumbolter (4), the outer loop pullover (6) of anchoring agent compaction device (1) are hugged closely the drilling wall and are fixed during the use, metal casing (5) are followed stock (3) and are rotated and rotate, realize relative motion through multilayer lubrication pearl (8) between outer loop pullover (6) and metal casing (5), baffle (10) and the rubber seal at metal casing (5) top effectively prevent to stir the anchoring agent in the garrulous anchoring agent package (2) and spill out the drilling or get into rotatory cavity simultaneously.
8. A rock bolt according to claim 7, wherein: when the rod body of the anchor rod (3) is short, only one anchoring agent compacting device (1) needs to be arranged on the rod body, and the anchoring agent compacting device (1) is arranged at the rear section of the rod body of the anchor rod (3); when the anchor rod (3) body of rod is longer, need set up a plurality of anchor agent compaction device (1) on the body of rod, install anchor agent compaction device (1) at the back end of the anchor rod (3) body of rod and still set up anchor agent compaction device (1) at body of rod middle section interval according to the length of anchor rod (3) outward.
9. A method of using the anchor of claim 7, characterized by the steps of:
a. determining the anchoring length according to the design requirement of coal mine anchor rod support, determining the required anchoring dosage, and manufacturing the required anchoring agent bag (2) according to the preset drilling size;
b. installing the anchoring agent compacting device (1) at the corresponding position of the anchor rod (3), screwing the fixing screws (9), fixing the two rows of fixing screws (9) between the transverse ribs of the anchor rod, and determining that the length of the front end of the anchor rod is 1-3 cm larger than the designed anchoring length value by lifting the anchoring agent compacting device (1);
c. the anchor agent bag (2) and the anchor rod (3) are sequentially placed into the drilled hole, the technical requirement that the anchor rod is placed in the middle is not required to be implemented when the anchor rod is installed, the hydraulic anchor rod drilling machine (4) is directly used for drilling the anchor rod, a tray and screws are installed, and the installation of the anchor rod is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011250786.4A CN112360527A (en) | 2020-11-11 | 2020-11-11 | Anchoring agent compaction device, anchor rod and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011250786.4A CN112360527A (en) | 2020-11-11 | 2020-11-11 | Anchoring agent compaction device, anchor rod and using method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112360527A true CN112360527A (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011250786.4A Pending CN112360527A (en) | 2020-11-11 | 2020-11-11 | Anchoring agent compaction device, anchor rod and using method |
Country Status (1)
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| CN (1) | CN112360527A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175340A (en) * | 2021-04-30 | 2021-07-27 | 中煤科工开采研究院有限公司 | Anchoring agent anchoring system |
| CN114934795A (en) * | 2022-06-17 | 2022-08-23 | 中国矿业大学 | Similar model test anchor rod capable of self-injecting anchoring agent and applying pretightening force |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175340A (en) * | 2021-04-30 | 2021-07-27 | 中煤科工开采研究院有限公司 | Anchoring agent anchoring system |
| CN113175340B (en) * | 2021-04-30 | 2023-06-20 | 中煤科工开采研究院有限公司 | Anchoring agent anchoring system |
| CN114934795A (en) * | 2022-06-17 | 2022-08-23 | 中国矿业大学 | Similar model test anchor rod capable of self-injecting anchoring agent and applying pretightening force |
| CN114934795B (en) * | 2022-06-17 | 2023-12-12 | 中国矿业大学 | Similar model test anchor rod capable of self-injecting anchoring agent and applying pretightening force |
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Application publication date: 20210212 |