CN103016034A - Mining hollow grouting anchor cable - Google Patents
Mining hollow grouting anchor cable Download PDFInfo
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- CN103016034A CN103016034A CN2012104326970A CN201210432697A CN103016034A CN 103016034 A CN103016034 A CN 103016034A CN 2012104326970 A CN2012104326970 A CN 2012104326970A CN 201210432697 A CN201210432697 A CN 201210432697A CN 103016034 A CN103016034 A CN 103016034A
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Abstract
The invention relates to a mining hollow grouting anchor cable which comprises a hollow spiral rod body (8) formed by winding a steel strand (81), wherein a rigid grouting pipe (5) and a flexible grouting pipe (7) are arranged in the rod body (8); a set of supporting sleeves (9) on the flexible grouting pipe (7) are arranged between the rod body (8) and the flexible grouting pipe (7); a set of jetting holes (10) are arranged in the flexible grouting pipe (7); a thread locking sleeve (1) is arranged at one end of the rod body (8) corresponding to the rigid grouting pipe (5); a tray (3) is arranged on the thread locking sleeve (1); and a centering nut (2) matched with the tray (3) is arranged on the thread locking sleeve (1). The mining hollow grouting anchor cable can realize the deep hole grouting; the steel pipe supporting sleeves are added in the positions drilled with the jetting holes, so that the steel strand at the positions is opened; the grouting effect is ensured; a bonding area of a cable body and a cement body and the yielding action are increased; and the anchoring effect is increased.
Description
Technical field
The present invention relates to the mining supports device, relate in particular to a kind of mining hollow grouting cable anchor.
Background technology
Along with the coal mining degree of depth is constantly deepened, rock crusher ground, down-hole is pressed large, the aggravation of rock stratum, deep absciss layer, and underworkings, the increasing of chamber section and pressure are also increasing, and this is so that the Deep Soft Rock tunnel is regarded as the difficult problem of coal mine support always.
At present, various types of bolt supports are tested in many mining areas in soft-rock tunnel, yet, the Deep Soft Rock roadway surrounding rock is broken, intensity is low, the relaxation zone scope is larger, can't provide stable origin of force for anchor pole, therefore uses merely common bolt to be difficult to supporting and lives pressure soft rock tunnel, highland; In addition, common grouted anchor bar adopts steel pipe to make, steel pipe can not be crooked, be subjected to the restriction of narrow workplace, down-hole, it is very long that the grouted anchor bar of steel pipe type can not be processed, generally all below 4 meters, therefore, can not carry out grouting and reinforcing to deep, tunnel absciss layer country rock, and then also can't provide stable origin of force for anchor pole.
Summary of the invention
The present invention gets purpose and is to provide a kind of mining hollow grouting cable anchor, and solving existing anchor pole can not carry out grouting and reinforcing to deep, tunnel absciss layer country rock, and then the defective of stable origin of force also can't be provided for anchor pole.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of mining hollow grouting cable anchor, it is characterized in that comprising: a hollow screw body of rod that adopts steel strand to be entwined, be provided with continuous rigidity Grouting Pipe and flexible grout pipe in the body of rod, between the body of rod and flexible grout pipe, be provided with one group of support set that is enclosed within on the flexible grout pipe, be provided with one group at the flexible grout pipe and penetrate the slurry hole, the body of rod one end corresponding in the rigidity Grouting Pipe is provided with the screw-threaded coupling cover, screw-threaded coupling puts and is provided with a pallet, and the screw-threaded coupling cover also is provided with an aligning nut and cooperates with pallet.
The body of rod adopts high strength helical rib prestress wire to be entwined, because spiral ribs prestress wire surface area is greater than same specification light face prestress wire, so the spiral ribs prestress wire is more firm than the adhesion stress between light face prestress wire and the Anchor Agent;
Because steel strand and flexible grout pipe are flexible, so the length of this anchor cable is not limited by the height-width in tunnel, even in narrower tunnel the anchor pole than the stock body can be installed also, can realize deep hole grouting;
Whenever being spaced a distance on the flexible grout pipe is drilled with a plurality of slurry holes of penetrating, and is drilled with to penetrate slurry hole site place and add the steel pipe support cover these place steel strand are strutted, and has both guaranteed slip casting effect, also can increase the Bonding area of cable body and adhesive bond and allow the pressure effect, the raising anchoring effect.
On the basis of above-mentioned main technical schemes, can increase following further perfect technical scheme:
Described rigidity Grouting Pipe two ends are provided with external screw thread, and an end is exposed at the body of rod outside outward, and the other end is connected with flexible grout Guan Yiduan; The rigid metal Grouting Pipe surface of exposing is shaped with screw thread, conveniently is connected with slurry casting machine, adopts the rigid metal Grouting Pipe can prevent that also the contraction of stopping bar tail causes the screw-threaded coupling cover to lose efficacy;
Be provided with a solid metal in the body of rod corresponding to the described flexible grout pipe other end; The body of rod center of resin anchoring section substitutes Grouting Pipe with the solid metal body of rod, and the body of rod that can prevent the resin anchoring section shrinks and causes anchorage cable anchoring to lose efficacy.
The described body of rod and screw-threaded coupling inner room are provided with Extruding spring.
Also be provided with stop grouting plug on the described body of rod.
The described body of rod is at the terminal steel strand that expose about long 30 mm of screw-threaded coupling cover.
Described pallet is provided with the arch pallet of a protrusion, and the arch pallet is provided with a taper concave surface of axially placing, and the spherical crown that described aligning nut is provided with a protrusion of axially placing cooperates with the taper surface of pallet; The screw-threaded coupling cover cooperates the screw thread locking mechanism that consists of the resin anchor cable with spherical crown aligning nut, can carry out pretension and locking to anchor cable by this retaining mechanism; And spherical crown aligning nut cooperates the arch pallet to use, thereby the angle that can regulate between the anchor cable body of rod and the pallet is improved the anchor cable force-bearing situation with suitable for surrounding rock air spots or anchor cable installing hole and country rock surface out of plumb, improve the cable bolting effect, compare with common anchor cable, adopt screw thread locking mechanism exposed junction reliable lock, non-slip, spark does not appear and protruded length is little, do not affect the tunnel effective height.
The present invention is further described below in conjunction with drawings and Examples.
Description of drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1 of the present invention.
The specific embodiment
As depicted in figs. 1 and 2, a kind of mining hollow grouting cable anchor of the present invention comprises the prestressed body of rod 8 of high strength helical rib of a hollow of being twined by steel strand 81 centered by Grouting Pipe, be provided with continuous rigidity Grouting Pipe 5 and flexible grout pipe 7 in the body of rod 8, and rigidity Grouting Pipe 5 two ends are shaped with screw thread, one end exposes than anchor cable tail end and forms the slip casting end about long 10mm, the other end is connected with flexible grout pipe 7, flexible grout pipe 7 is spaced a distance to be drilled with and penetrates slurry hole 10, and penetrate slurry 10 places, hole at each and add steel pipe support cover 9, this place's body of rod 8 is strutted, being convenient to slurries can inject in the body of rod rock cranny all around, also can play simultaneously anchor cable allows pressure improve the anchoring effect effect, the body of rod 8 centers of cable body anchoring section substitute Grouting Pipe with the solid metal body of rod 11, and the body of rod that can prevent resin end anchor part shrinks and causes anchoring to be lost efficacy; After the body of rod 8 became by anchor cable strand making mechanism, the top was welded into integral body, in case cable body is loose; The body of rod one end in rigidity Grouting Pipe 5 correspondences is provided with screw-threaded coupling cover 1, screw-threaded coupling cover 1 and built-in Extruding spring 4 are contained in the anchor cable tail end, and the anchor cable tail end exposes than screw-threaded coupling cover 1 and forms installation end about 30mm, then by extruder screw-threaded coupling cover 1 firmly is fixed on the anchor cable tail end, and be shaped with screw thread at screw-threaded coupling cover 1, screw-threaded coupling cover 1 is provided with a pallet 3, screw-threaded coupling cover 1 also is provided with an aligning nut 2 and cooperates with pallet 3, described pallet 3 is provided with the arch pallet of a protrusion, arch pallet 3 is provided with a taper concave surface of axially placing, and the spherical crown that described aligning nut 2 is provided with a protrusion of axially placing cooperates with the taper surface of pallet 3; Also be provided with stop grouting plug 6 on the described body of rod 8.
Operating principle
When install the down-hole, accomplish fluently first boring, because steel strand and flexible grout pipe are flexible, so the length of this anchor cable is not limited by the height-width in tunnel, even the anchor pole than the stock body also can be installed in narrower tunnel, in advance load onto cone rubber stop grouting plug 6, arch pallet 53, spherical crown aligning nut 42 cone rubber stop grouting plugs 6 at the anchor cable afterbody and be mainly used in sealing hell, mortar leakage prevention.In boring, put into first the resin anchoring agent powder stick, the anchor cable overall length is sent in the boring, rotate anchor cable with special tool and make head be twisted broken the resin anchoring agent powder stick, after solidifying anchor cable head is anchored at the bottom of the hole, then tighten spherical crown aligning nut 4, make anchor cable produce prestressing force, install.
During slip casting, screw thread is directly tightened to be connected and is got final product on slurry casting machine and the slip casting end, start grouting pump, slurries are by penetrating the slit between slurry hole 10 and steel strand on the flexible grout pipe, be injected in the crack of rock mass, and be full of boring, form full anchor structure, steel strand by steel pipe support cover spreading both had been conducive to the slurries diffusion and also can have increased the Bonding area of anchor cable and adhesive bond and allow the pressure effect, the raising anchoring effect; Because this grouting cable anchor cable body length is longer, so that the scope of slurries diffusion is larger in the country rock, make deep-level country rock be frozen into an integral body, for anchor pole, cable bolting provide reliable origin of force, reduce the tunnel and destroy, reduced support cost, can effectively guarantee the stability of soft rock roadway support.
Claims (7)
1. mining hollow grouting cable anchor, it is characterized in that comprising: a hollow screw body of rod (8) that adopts steel strand (81) to be entwined, be provided with continuous rigidity Grouting Pipe (5) and flexible grout pipe (7) in the body of rod (8), between the body of rod (8) and flexible grout pipe (7), be provided with one group of support set (9) that is enclosed within on the flexible grout pipe (7), be provided with one group at flexible grout pipe (7) and penetrate slurry hole (10), the body of rod (8) one ends corresponding in rigidity Grouting Pipe (5) are provided with screw-threaded coupling cover (1), screw-threaded coupling cover (1) is provided with a pallet (3), and screw-threaded coupling cover (1) also is provided with an aligning nut (2) and cooperates with pallet (3).
2. a kind of mining hollow grouting cable anchor according to claim 1, it is characterized in that: described rigidity Grouting Pipe (5) two ends are provided with external screw thread, and an end is exposed at the body of rod (8) outside outward, and the other end is connected with flexible grout pipe (7) one ends.
3. a kind of mining hollow grouting cable anchor according to claim 2 is characterized in that: be provided with a solid metal (11) in the body of rod (8) corresponding to described flexible grout pipe (7) other end.
4. a kind of mining hollow grouting cable anchor according to claim 3 is characterized in that: be provided with Extruding spring (4) between the described body of rod (8) and screw-threaded coupling cover (1).
5. a kind of mining hollow grouting cable anchor according to claim 4 is characterized in that: also be provided with stop grouting plug (6) on the described body of rod (8).
6. a kind of mining hollow grouting cable anchor according to claim 5 is characterized in that: the described body of rod (8) exposes steel strand (81) about long 30 mm at screw-threaded coupling cover (1) end.
7. according to claim 1 or 6 described a kind of mining hollow grouting cable anchors, it is characterized in that: described pallet (3) is provided with the arch pallet of a protrusion, the arch pallet is provided with a taper concave surface of axially placing, and the spherical crown that described aligning nut (2) is provided with a protrusion of axially placing cooperates with the taper surface of pallet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104326970A CN103016034A (en) | 2012-11-03 | 2012-11-03 | Mining hollow grouting anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104326970A CN103016034A (en) | 2012-11-03 | 2012-11-03 | Mining hollow grouting anchor cable |
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| CN103016034A true CN103016034A (en) | 2013-04-03 |
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| CN2012104326970A Pending CN103016034A (en) | 2012-11-03 | 2012-11-03 | Mining hollow grouting anchor cable |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410543A (en) * | 2013-08-13 | 2013-11-27 | 中国矿业大学 | Pressure yielding internally-grouted anchor cable |
| CN103590845A (en) * | 2013-11-28 | 2014-02-19 | 河南理工大学 | Impact-resistant interval grouting anchor cable and use method thereof |
| CN103850694A (en) * | 2014-03-19 | 2014-06-11 | 山东科技大学 | Grouting anchor cable and grouting method capable of realizing one-side grouting and two-side tightening |
| CN109083669A (en) * | 2018-09-07 | 2018-12-25 | 天地科技股份有限公司 | Roadway floor prestressed grouting birdcage anchor cable construction method |
| CN109458202A (en) * | 2018-12-28 | 2019-03-12 | 常州工学院 | A kind of pressure-release anchor cable |
| CN109578034A (en) * | 2019-01-25 | 2019-04-05 | 山东焱鑫矿用材料加工有限公司 | A kind of high strength grouting anchor cable with from degassing function |
| CN109578036A (en) * | 2018-11-12 | 2019-04-05 | 山东科技大学 | A kind of grouting cable anchor and placement method all filled for loose media |
| CN109838258A (en) * | 2017-11-28 | 2019-06-04 | 平安煤炭开采工程技术研究院有限责任公司 | Anchorage |
| CN109854287A (en) * | 2019-03-08 | 2019-06-07 | 山东焱鑫矿用材料加工有限公司 | A kind of Novel hollow grouting cable anchor and preparation method thereof |
| CN110344602A (en) * | 2019-06-14 | 2019-10-18 | 河海大学 | Grouting device and grouting method suitable for slip casting armored concrete pull-out test |
| CN110421319A (en) * | 2019-07-27 | 2019-11-08 | 山东焱鑫矿用材料加工有限公司 | A kind of overall length cementation anchor cable production method |
| CN110486064A (en) * | 2019-07-27 | 2019-11-22 | 山东焱鑫矿用材料加工有限公司 | A kind of overall length cementation anchor cable |
| CN112392524A (en) * | 2020-11-16 | 2021-02-23 | 山东科技大学 | Geotechnical engineering sectional type cavity slip casting anchor rope device |
| CN114294034A (en) * | 2021-12-29 | 2022-04-08 | 国家能源集团宁夏煤业有限责任公司 | Roadway support system and roadway support method |
| CN114808695A (en) * | 2022-04-19 | 2022-07-29 | 国能神东煤炭集团有限责任公司 | Support anchor rope and fixed knot construct |
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| CN201507317U (en) * | 2009-09-15 | 2010-06-16 | 济南澳科矿山工程技术有限公司 | Anchoring-grouting anchor rope |
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| US20120255272A1 (en) * | 2011-04-07 | 2012-10-11 | Soletanche Freyssinet | Method and device for protecting the end of an anchored cable |
| CN202926355U (en) * | 2012-10-31 | 2013-05-08 | 于守东 | Hollow grouting anchor cable for mine |
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Patent Citations (5)
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| CN201507317U (en) * | 2009-09-15 | 2010-06-16 | 济南澳科矿山工程技术有限公司 | Anchoring-grouting anchor rope |
| CN201507318U (en) * | 2009-09-15 | 2010-06-16 | 济南澳科矿山工程技术有限公司 | Anchored and grouted anchor cable |
| US20120255272A1 (en) * | 2011-04-07 | 2012-10-11 | Soletanche Freyssinet | Method and device for protecting the end of an anchored cable |
| CN102704971A (en) * | 2012-01-11 | 2012-10-03 | 济南澳科矿山工程技术有限公司 | Grouting and Grouting-stopping anchor cable inside hole |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410543A (en) * | 2013-08-13 | 2013-11-27 | 中国矿业大学 | Pressure yielding internally-grouted anchor cable |
| CN103590845A (en) * | 2013-11-28 | 2014-02-19 | 河南理工大学 | Impact-resistant interval grouting anchor cable and use method thereof |
| CN103590845B (en) * | 2013-11-28 | 2015-09-16 | 河南理工大学 | A kind of Impact-resistant interval grouting cable anchor and using method thereof |
| CN103850694A (en) * | 2014-03-19 | 2014-06-11 | 山东科技大学 | Grouting anchor cable and grouting method capable of realizing one-side grouting and two-side tightening |
| CN103850694B (en) * | 2014-03-19 | 2016-04-06 | 山东科技大学 | The grouting cable anchor that slip casting both sides, a kind of one side are fastening and grouting method |
| CN109838258A (en) * | 2017-11-28 | 2019-06-04 | 平安煤炭开采工程技术研究院有限责任公司 | Anchorage |
| CN109083669A (en) * | 2018-09-07 | 2018-12-25 | 天地科技股份有限公司 | Roadway floor prestressed grouting birdcage anchor cable construction method |
| CN109578036A (en) * | 2018-11-12 | 2019-04-05 | 山东科技大学 | A kind of grouting cable anchor and placement method all filled for loose media |
| CN109578036B (en) * | 2018-11-12 | 2020-05-26 | 山东科技大学 | Grouting anchor cable for completely filling loose bodies and filling method |
| CN109458202A (en) * | 2018-12-28 | 2019-03-12 | 常州工学院 | A kind of pressure-release anchor cable |
| CN109578034A (en) * | 2019-01-25 | 2019-04-05 | 山东焱鑫矿用材料加工有限公司 | A kind of high strength grouting anchor cable with from degassing function |
| CN109854287A (en) * | 2019-03-08 | 2019-06-07 | 山东焱鑫矿用材料加工有限公司 | A kind of Novel hollow grouting cable anchor and preparation method thereof |
| CN110344602A (en) * | 2019-06-14 | 2019-10-18 | 河海大学 | Grouting device and grouting method suitable for slip casting armored concrete pull-out test |
| CN110421319A (en) * | 2019-07-27 | 2019-11-08 | 山东焱鑫矿用材料加工有限公司 | A kind of overall length cementation anchor cable production method |
| CN110486064A (en) * | 2019-07-27 | 2019-11-22 | 山东焱鑫矿用材料加工有限公司 | A kind of overall length cementation anchor cable |
| CN112392524A (en) * | 2020-11-16 | 2021-02-23 | 山东科技大学 | Geotechnical engineering sectional type cavity slip casting anchor rope device |
| CN114294034A (en) * | 2021-12-29 | 2022-04-08 | 国家能源集团宁夏煤业有限责任公司 | Roadway support system and roadway support method |
| CN114808695A (en) * | 2022-04-19 | 2022-07-29 | 国能神东煤炭集团有限责任公司 | Support anchor rope and fixed knot construct |
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Application publication date: 20130403 |