CN206092038U - Slip casting anchor bar - Google Patents
Slip casting anchor bar Download PDFInfo
- Publication number
- CN206092038U CN206092038U CN201621112568.3U CN201621112568U CN206092038U CN 206092038 U CN206092038 U CN 206092038U CN 201621112568 U CN201621112568 U CN 201621112568U CN 206092038 U CN206092038 U CN 206092038U
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- CN
- China
- Prior art keywords
- rod body
- adapter sleeve
- anchor bar
- rod
- core rod
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- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a slip casting anchor bar, includes the stock body, is equipped with ground tackle and slip casting connecting piece on the stock body, and the stock body is personally experienced sth. Part of the body including the empty core rod body and real core rod, and the distal end of the real core rod body is resin anchor end, the distal end of the empty core rod body links into an integrated entity through the adapter sleeve with the near -end of the real core rod body, opens the grout outlet that has with the centre bore intercommunication of the empty core rod body on the adapter sleeve, processing is threaded on the near -end surface of the empty core rod body, and slip casting connecting piece threaded connection is at the near -end of the empty core rod body, the ground tackle includes tray and nut, the tray with thick liquid stopper till between the adapter sleeve ends the thick liquid stopper and has the crescent conical tooth of minimum diameter more than the at least two -stage. This stock has the advantage that grouting pressure is big, the site operation simple, convenience, low cost are processed in the operation.
Description
Technical field
The utility model is related to a kind of technical field of mine support, more particularly, to a kind of Assembled slip-casting roofbolt, the anchor
Bar may be used to roadway support or reinforcing under the complexity hard situation such as mine soft rock, crushed zone, deep-well, region of high stress, especially
It is roadway's sides, the supporting of base plate and reinforcing, it can also be used to the Geotechnical Engineering such as tunnel, side slope and foundation ditch.
Background technology
Surpass 4,000,000,000 tons, account for the coal big country of world's coal production more than 50% as a coal annual production, with exploitation rule
The expansion of mould, the mining depth of mine increases year by year, and geological conditions deteriorates, crustal stress is raised, and roadway support difficulty is day by day lifted,
Supporting and maintenance cost more and more higher.Roadway support especially in soft-rock tunnel, the region of high stress and crushed zone and safeguard more
Difficulty, and bolt-grouting support is one of effective ways of complex condition supporting and reinforcing.
At present, the body of rod of hollow grouting anchor is processed using seamless pipe or welded tube, uses anchor rod body during construction
The mode such as resin explosive roll or mechanical expanding shell carries out end anchor, and stop grouting plug sealing of hole puts pallet, and nut of screwing on applies prestressing force, with note
Slurry pipe is connected grouting pump with the grouted anchor bar body of rod, and cement injection or other organic slurries are carried out to roadway surrounding rock by hollow lever
Liquid such as Mary dissipate etc., slurries are diffused in roadway surrounding rock, after solidification to roadway surrounding rock play enhancing and reinforcement effect, realize
The combination that anchoring and wall rock grouting are reinforced.The grouted anchor bar of existing domestic production has two kinds, and one is hollow grouting anchor, and two is group
Box-like grouted anchor bar.Hollow grouting anchor is primarily present both sides problem：One is that lever strength is low, with welded tube process it is hollow
Typically in 50KN or so, the hollow grouting anchor Fracture Force processed with seamless pipe is usually no more than 150KN to grouted anchor bar Fracture Force,
Some hollow grouting anchors are only as grouting.Two is high cost, and due to processing the hollow grouting anchor body of rod seamless steel pipe is adopted
Or welded tube is processed, tubing price is higher than hot rolling wire price by 1/3rd, and hollow grouting anchor technique is processed in addition than tree
Fat anchor pole is complicated, wants high by more than 30% with the cost of the hollow grouting anchor of the same Fracture Force of resin anchor.Assembled slip-casting roofbolt
The front end of the body of rod is the solid body of rod, and rear end is hollow lever, and front and back end is connected with adapter sleeve.Such as railroad industry standard TB/
Hollow grouting anchor is combined in T3209-2008, but existing Assembled slip-casting roofbolt does not apply to broken, soft coal mine roadway
Surrounding rock supporting, the grouted anchor bar as disclosed in the utility model patent of Application No. 201520458605.5, the only slurry of the anchor pole
Fill in for cylindric Hose Jacket, stop grouting plug front end is withstood on the rear end face of adapter sleeve, and the front end of extruded tube withstands on the rear end of stop grouting plug
On face, pallet is withstood on the rear end face of hard extruded tube.This kind of structure realizes envelope in drilling by adapter sleeve, stop grouting plug and extruded tube
Hole, prevents grouting serous fluid from contacting with hollow rod body surface, to improve hole-sealing grouting pressure, but this kind by movable connection
The sealing of hole mode that stop grouting plug and extruded tube are realized jointly is difficult to Fast Installation positioning, and convenience is poor in use.
The content of the invention
The purpose of this utility model is to overcome shortcoming present in prior art, there is provided a kind of grouted anchor bar, the anchor pole
The seepage of slurries is prevented effectively from by the setting of multi-stage taper tooth, and is easy to job site to install, the technical scheme of employing is：One
Grouted anchor bar, including bolt body are planted, equipped with anchorage and slip casting connector in the bolt body, it is characterised in that：The anchor
Bar body includes hollow rod body and the solid body of rod, and the distal end of the solid body of rod is resin anchoring end；The hollow rod body it is remote
End links into an integrated entity with the solid body of rod proximally by adapter sleeve, and the centre bore with the hollow rod body is provided with the adapter sleeve
The grout outlet of connection；It is threaded on the near-end outer surface of the hollow rod body, slip casting connector is threaded in the sky
The near-end of core bar body；Anchorage includes pallet and nut, is stop grouting plug between the pallet and the adapter sleeve, the stop grouting plug tool
There is the conical tooth that at least two-stage above minimum diameter gradually increases.
Technical characteristic of the present utility model also has：It is provided with guarantee slurries in the hollow rod body to flow to hollow rod body distal end
Check valve.
Technical characteristic of the present utility model also has：The adapter sleeve and the tapered section that hollow rod body linkage section is adapter sleeve,
The bigger diameter end of the tapered section of the adapter sleeve is near the hollow rod body.
Technical characteristic of the present utility model also has：The solid body of rod is processed into by the vertical muscle anchor bar steel of left-handed nothing.
Technical characteristic of the present utility model also has：The stop grouting plug includes two stage conical tooth.
Technical characteristic of the present utility model also has：The stop grouting plug is flexible piece.
Technical characteristic of the present utility model also has：The distal end of the hollow rod body is with the solid body of rod proximally by adapter sleeve
Threaded connection is integral.
Technical characteristic of the present utility model also has：The slip casting connector is plug.
The beneficial effects of the utility model are：The utility model fully combines total bolt support mechanism and grouting and reinforcing machine
Reason, reaches the purpose of anchor note；Sealing of hole effect is improve using adapter sleeve and multi-stage taper tooth stop grouting plug, effectively prevents slurries to ooze
Leakage；The length of the solid body of rod determines that achievable extra long anchor bar supporting is low to be held using the solid body of rod according to construction condition
Anchor, using hollow lever and the solid body of rod slip casting is implemented in combination with,；This anchor pole has that grouting pressure is big, site operation simple, behaviour
Make advantage easy to process, with low cost.
Description of the drawings
Accompanying drawing 1 is the utility model structural representation, and 1 is resin anchoring agent end, and 2 is cement mortar, and 3 is the solid body of rod, and 4 are
Grout outlet, 5 is adapter sleeve, and 6 is stop grouting plug, and 7 is hollow rod body, and 8 is pallet, and 9 is nut.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is illustrated.The anchor pole is applied to soft rock, crushes
Band and high stress tunnel supporting and the combined type grouting operation reinforced, are particularly well-suited to the two deep hole supportings for helping with base plate.
The anchor pole includes bolt body, adapter sleeve 5, stop grouting plug 6, the and of pallet 8 that hollow rod body 7 and the solid body of rod 3 are constituted
Nut 9.Adapter sleeve 5 connects hollow rod body 7 and the solid body of rod 3, and at least one grout outlet 4 of mid portion.
There is screw thread outside hollow rod body 7, one end can screw on nut 9, and one end is connected with adapter sleeve 5.The solid body of rod 3 can be whole
The body of rod has screw thread, also can two ends have screw thread, in order to ensure the bulk strength of bolt body, the Fracture Force of hollow rod body 7 with it is solid
The body of rod 3 is consistent, and the length of hollow rod body 7 determines according to sealing of hole position and drilling depth.In order to prevent slip casting from terminating outside rear slurry
Stream, can arrange check valve in hollow rod body 7, and the setting of the check valve ensures that slurries can only be flowed to from the near-end of hollow rod body 7
Distal end.
Processed from the vertical muscle anchor bar steel of left-handed nothing when the resin of the solid body of rod 3 carries out end anchor, the surface of the solid body of rod 3 should have
Certain roughness, to improve the binding ability with injecting paste material, increases the anchor force of anchor pole.The solid body of rod 3 can with adapter sleeve 5
Using threaded connection, the connection of the other modes such as welding is may also be employed, as long as ensureing that bonding strength is not less than needed for bolt body
Intensity.
The profile of adapter sleeve 5 is the different cylinder of diameter, and one end is connected with hollow rod body 7, the other end and the phase of the solid body of rod 3
Even, mid portion is provided with grout outlet 4, and the shape of grout outlet 4 is preferably elongated hole, to reduce stress collection of the grout outlet to adapter sleeve 5
In, the area of grout outlet 4 should be not less than the endoporus area of hollow rod body 7, to be conducive to pulp.Connection can be made as decision design
Cover 5 one end bands tapered, it is therefore an objective to which stop grouting plug 6 is strutted into sealing of hole.
The internal diameter of stop grouting plug 6 is slightly larger than the external diameter of hollow rod body 7, and the outer surface of stop grouting plug 6 is provided with conical tooth, different tapers
Its minimum outer diameter of tooth is different, and stop grouting plug 6 is referred to for flexible piece and made of soft material, such as rubber, flexible plastic, by taper
The taper of tooth, prevents slurries from outflowing.
Hollow rod body 7 can adopt full thread structure, can also process the structure of TBE (threaded both ends).
The effect of plug is to prevent from blocking slip casting passage in transport, installation process, and slip casting is screwed in time after terminating, and prevents slurry
The outflow of liquid.Plug can be directly screwed on the internal thread of hollow rod body 7, also can be screwed on the external screw thread of hollow rod body 7.
The processing of grouted anchor bar：The vertical muscle high strength anchor bar steel 3000mm of left-handed nothing for choosing diameter 20mm is processed into solid hopkinson bar
Body 3, according to the principle of strength matching, the external diameter of hollow rod body 7 elects 25mm as, and the diameter of adapter sleeve 5 elects 32mm as, then by solid hopkinson bar
Body 3, hollow rod body 7 and adapter sleeve 5 fit together to form bolt body, and overall length is 3400mm, plug of screwing on, per 10 with bag
The annex such as the matched pallet 8 being fitted together and sealing material, is sent to job site.
Underground construction：
Bore bolthole.With drill bit construction drill hole depth 3300mm of diameter 28, then with the drill bit reaming of diameter 34mm
400mm depths；
Anchor pole is installed：By in resin explosive roll load hole, resin explosive roll is slowly pushed access hole bottom with the solid body of rod 3,
Powder stick must not be broken in the process, the port of exposing of combined anchor is connected with jumbolter with anchor rod stirring device, open
Dynamic jumbolter, while propulsion, while stir, mixing time is reached after the mixing time of the requirement of resin anchoring agent, stop stir etc.
Treat hardening of resin.After hardening of resin, unload agitator, install stop grouting plug 6, pallet 8 and nut 9, with pneumatic impact wrench or
Other instrument rotating nuts 9, pallet 8 progressively close scar and extrudes stop grouting plug 6, reaches the purpose of sealing of hole in drilling.Reach and set
Stop pretension after the pre-fastening moment of meter such as 150Nm, anchor pole has applied prestressing force.
Slip casting.Connect anchor pole afterbody and grouting pump with Grouting Pipe, open grouting pump, by by the proportioning of design requirement
In cement grout injection bolthole, slurries are from the pulp of grout outlet 4 of adapter sleeve, the annular between filling borehole and the solid body of rod 3
Space, and spread to the wall-rock crack in drilling, slip casting to reach and stop slip casting after the grouting pressure of design, unloads slurry casting machine and screws on
Plug completes slip casting.
The full length fastening of anchor pole is realized by slip casting, support action of the high-strength body of rod to roadway surrounding rock is given full play to, is solved
Domestic long anchor pole of having determined cannot realize a difficult problem for full length fastening, while by slip casting, slurries spread in crack in rock, consolidate
Knot, improves broken, soft rock mass intensity, reaches preferable supporting effect.
Certainly, described above is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
Change, remodeling, addition or replacement that the those of ordinary skill in art field is made in essential scope of the present utility model, also belong to
In protection domain of the present utility model.
Claims (8)
1. a kind of grouted anchor bar, including bolt body, equipped with anchorage and slip casting connector in the bolt body, its feature exists
In：The bolt body includes hollow rod body and the solid body of rod, and the distal end of the solid body of rod is resin anchoring end；It is described hollow
The distal end of the body of rod links into an integrated entity with the solid body of rod proximally by adapter sleeve, is provided with the adapter sleeve and the hollow rod body
Centre bore connection grout outlet；It is threaded on the near-end outer surface of the hollow rod body, the threaded connection of slip casting connector
In the near-end of the hollow rod body；Anchorage includes pallet and nut, is stop grouting plug between the pallet and the adapter sleeve, described
Stop grouting plug has the conical tooth that at least two-stage above minimum diameter gradually increases.
2. according to the grouted anchor bar described in claim 1, it is characterised in that：Guarantee slurries are provided with the hollow rod body to hollow
The check valve of body of rod distal end flowing.
3. according to the grouted anchor bar described in claim 1, it is characterised in that：The adapter sleeve is to be connected with hollow rod body linkage section
The tapered section of set, the bigger diameter end of the tapered section of the adapter sleeve is near the hollow rod body.
4. according to the grouted anchor bar described in claim 1, it is characterised in that：The solid body of rod is added by the vertical muscle anchor bar steel of left-handed nothing
Work is made.
5. according to the grouted anchor bar described in claim 1, it is characterised in that：The stop grouting plug includes two stage conical tooth.
6. according to the grouted anchor bar described in claim 5, it is characterised in that：The stop grouting plug is flexible piece.
7. according to the grouted anchor bar described in claim 1, it is characterised in that：The distal end of the hollow rod body is near with the solid body of rod
End is threadedly coupled integral by adapter sleeve.
8. according to the grouted anchor bar described in claim 1, it is characterised in that：The slip casting connector is plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621112568.3U CN206092038U (en) | 2016-10-11 | 2016-10-11 | Slip casting anchor bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621112568.3U CN206092038U (en) | 2016-10-11 | 2016-10-11 | Slip casting anchor bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206092038U true CN206092038U (en) | 2017-04-12 |
Family
ID=60413795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621112568.3U Expired - Fee Related CN206092038U (en) | 2016-10-11 | 2016-10-11 | Slip casting anchor bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206092038U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654249A (en) * | 2017-11-14 | 2018-02-02 | 淮南久辉工贸有限责任公司 | A kind of novel anchor rod, anchor cable combined type stop grouting plug |
| CN108049900A (en) * | 2017-12-07 | 2018-05-18 | 中国矿业大学 | A kind of colliery bulky powder coal body armature boring construction method |
| CN108397219A (en) * | 2018-02-27 | 2018-08-14 | 山东科技大学 | Mining slip casting prestressed anchor and its application method |
| CN108756973A (en) * | 2018-08-08 | 2018-11-06 | 中国矿业大学(北京) | Split type full length fastening flexible grout anchor pole and slip casting anchoring process |
| CN109594951A (en) * | 2019-01-23 | 2019-04-09 | 石家庄铁道大学 | A kind of grouting with small pipe port closing device and method for blocking |
| CN111502720A (en) * | 2020-05-28 | 2020-08-07 | 淮南矿业(集团)有限责任公司 | Solid anchor rod capable of grouting |
| CN112727517A (en) * | 2020-12-31 | 2021-04-30 | 辽宁工程技术大学 | Step-by-step buffering tensile anchor rod adapting to deformation of block-tied rock mass |
| CN112796808A (en) * | 2020-12-28 | 2021-05-14 | 中国科学院武汉岩土力学研究所 | Combined full-length anchoring pre-stressed anchor rod, stirrer and construction method |
| CN113027501A (en) * | 2021-05-07 | 2021-06-25 | 河南理工大学 | Self-drilling injection type anchor pipe anchoring device and method for coal mine |
-
2016
- 2016-10-11 CN CN201621112568.3U patent/CN206092038U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654249A (en) * | 2017-11-14 | 2018-02-02 | 淮南久辉工贸有限责任公司 | A kind of novel anchor rod, anchor cable combined type stop grouting plug |
| CN108049900A (en) * | 2017-12-07 | 2018-05-18 | 中国矿业大学 | A kind of colliery bulky powder coal body armature boring construction method |
| CN108397219A (en) * | 2018-02-27 | 2018-08-14 | 山东科技大学 | Mining slip casting prestressed anchor and its application method |
| CN108756973A (en) * | 2018-08-08 | 2018-11-06 | 中国矿业大学(北京) | Split type full length fastening flexible grout anchor pole and slip casting anchoring process |
| CN108756973B (en) * | 2018-08-08 | 2023-09-08 | 中国矿业大学(北京) | Split full-length anchoring flexible grouting anchor rod and grouting anchoring method |
| CN109594951A (en) * | 2019-01-23 | 2019-04-09 | 石家庄铁道大学 | A kind of grouting with small pipe port closing device and method for blocking |
| CN109594951B (en) * | 2019-01-23 | 2024-04-09 | 石家庄铁道大学 | Method for plugging small catheter grouting orifice |
| CN111502720A (en) * | 2020-05-28 | 2020-08-07 | 淮南矿业(集团)有限责任公司 | Solid anchor rod capable of grouting |
| CN112796808A (en) * | 2020-12-28 | 2021-05-14 | 中国科学院武汉岩土力学研究所 | Combined full-length anchoring pre-stressed anchor rod, stirrer and construction method |
| CN112727517A (en) * | 2020-12-31 | 2021-04-30 | 辽宁工程技术大学 | Step-by-step buffering tensile anchor rod adapting to deformation of block-tied rock mass |
| CN113027501A (en) * | 2021-05-07 | 2021-06-25 | 河南理工大学 | Self-drilling injection type anchor pipe anchoring device and method for coal mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20181011 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |