CN202926355U - Hollow grouting anchor cable for mine - Google Patents
Hollow grouting anchor cable for mine Download PDFInfo
- Publication number
- CN202926355U CN202926355U CN 201220563174 CN201220563174U CN202926355U CN 202926355 U CN202926355 U CN 202926355U CN 201220563174 CN201220563174 CN 201220563174 CN 201220563174 U CN201220563174 U CN 201220563174U CN 202926355 U CN202926355 U CN 202926355U
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- grouting
- rod
- screw
- pipe
- pallet
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Abstract
The utility model relates to a hollow grouting anchor cable for a mine. The hollow grouting anchor cable for the mine is characterized by comprising a hollow spiral rod body which is formed by steel strands in a twining mode. A solid grouting tube and a soft grouting tube are arranged in the rod body, the solid grouting tube is connected with the soft grouting tube, outer threads are arranged at two ends of the solid grouting tube, a group of strutting sleeves which are sleeved on the soft grouting tube are arranged between the rod body and the soft grouting tube, and the soft grouting tube is provided with a group of injection holes. One end, corresponding to the solid grouting tube, of the rod body is provided with a threaded locking sleeve, a tray is arranged on the threaded locking sleeve, and a spherical crown self-aligning nut which is matched with the tray is further arranged on the threaded locking sleeve. The length of the anchor cable is not bound by the height of a tunnel, even in a narrow tunnel, the anchor cable of the rod body can also be arranged, and deep hole grouting can be achieved. A plurality of injection holes are arranged in the soft grouting tube at intervals, portions of the injection holes are strutted by the strutting sleeves, and thereby the steel strands are strutted. Not only is the grouting effect guaranteed, but also the bonding area of a cable body and a cementation body is increased, and the yielding function is improved, and the anchoring effect is improved.
Description
Technical field
The utility model relates to the mining supports device, relates 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, underworkings, chamber section strengthen and pressure also increasing, this makes the Deep Soft Rock tunnel be 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.
The utility model content
The utility model 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 also can't provide for anchor pole the defective of stable origin of force.
The technical scheme that its technical problem that solves the utility model adopts is:
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 connected rigidity Grouting Pipe and flexible grout pipe in the body of rod, be provided with one group of support set that is enclosed within on the flexible grout pipe between the body of rod and flexible grout pipe, be provided with on the flexible grout pipe one group 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 a spherical crown aligning nut and coordinates with the arch pallet.
The body of rod adopts high strength helical rib prestress wire to be entwined, 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 Anchor Agent due to spiral ribs prestress wire surface area;
Due to steel strand and the flexible grout pipe 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, can realize deep hole grouting;
Be drilled with a plurality of penetrating at interval of a segment distance on the flexible grout pipe and starch the hole; be drilled with and penetrate slurry hole site place and add support set these place's steel strand are strutted; both guaranteed slip casting effect; also can increase the Bonding area of cable body and adhesive bond and allow the pressure effect; improve anchoring effect; in addition, also can protect the flexible grout pipe not squeezed wound by steel strand.
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 outward outside the body of rod, and the other end is connected with flexible grout Guan Yiduan; The rigidity Grouting Pipe surface of exposing is shaped with screw thread, is connected with slurry casting machine with convenient, adopts the rigidity Grouting Pipe can prevent also that the stopping bar tail shrinks and causes screw-threaded coupling to overlap inefficacy.
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 and increase the resistance spring.
Also be provided with stop grouting plug on the described body of rod.
The described body of rod exposes at screw-threaded coupling cover end the steel strand of growing about 30 mm.
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 coordinates with the taper surface of pallet; The screw-threaded coupling cover coordinates 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 coordinates the arch pallet to use, thereby the angle that can regulate between the anchor cable body of rod and 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.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Description of drawings:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional view of the utility model Fig. 1.
The specific embodiment
as depicted in figs. 1 and 2, the prestressed body of rod 8 of high strength helical rib of the hollow grouting cable anchor a comprises hollow that is wound around centered by Grouting Pipe by steel strand 81 that the utility model is mining, be provided with connected 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 long 10mm left and right formation filling adaptor than anchor cable tail end, the other end is connected with flexible grout pipe 7, flexible grout pipe 7 is spaced a distance to be drilled with to penetrate and starches hole 10, and each penetrate the slurry 10 places, hole add support set 9, this place's body of rod 8 is strutted, be convenient in rock cranny that slurries can inject body of rod surrounding, also can play simultaneously anchor cable allows pressure improve the anchoring effect effect, in addition, also can protect the flexible grout pipe not squeezed wound by steel strand, 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 the resin anchoring end shrinks and causes anchoring to be lost efficacy, after the body of rod 8 twisted making mechanism one-tenth by anchor cable, 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 the built-in resistance spring 4 that increases are contained in the anchor cable tail end, and the anchor cable tail end exposes long 30mm left and right formation than screw-threaded coupling cover 1 installs the termination, then by extruder, screw-threaded coupling cover 1 firmly is fixed on the anchor cable tail end, and be shaped with screw thread on 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 a spherical crown aligning nut 2 and coordinates 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, the spherical crown that described spherical crown aligning nut 2 is provided with a protrusion of axially placing coordinates 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, first accomplish fluently boring, invar twisted wire 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 3, spherical crown aligning nut 2 at the anchor cable afterbody, cone rubber stop grouting plug 6 is mainly used in sealing hell, mortar leakage prevention.First put into the resin anchoring agent powder stick in boring, after sending into anchor cable in boring, rotate anchor cable with special tool and make head be twisted broken the resin anchoring agent powder stick, at the bottom of after resin anchoring agent solidifies, anchor cable head being anchored at the hole, then tighten spherical crown aligning nut 2, make anchor cable produce prestressing force, install.
During slip casting, slurry casting machine is directly tightened to be connected with the screw thread on filling adaptor and is got final product, start grouting pump, slurries are injected in the crack of rock mass by penetrating the gap between slurry hole 10 and steel strand on the flexible grout pipe, and be full of boring, form full anchor structure, the steel strand by support set 9 spreadings 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, in addition, also can protect the flexible grout pipe not squeezed wound by steel strand; Because this grouting cable anchor cable body length is longer, make the scope of slurries diffusion in country rock larger, make deep layer absciss layer country rock be frozen into an integral body, for anchor pole, cable bolting provide reliable origin of force, prevent tunnel destruction, 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 connected rigidity Grouting Pipe (5) and flexible grout pipe (7) in the body of rod (8), be provided with one group of support set (9) that is enclosed within on flexible grout pipe (7) between the body of rod (8) and flexible grout pipe (7), be provided with on flexible grout pipe (7) one group penetrate the 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 an arch pallet (3), screw-threaded coupling cover (1) also is provided with a spherical crown aligning nut (2) and coordinates with arch pallet (3).
2. 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, one end is exposed at long 10mm left and right, the body of rod (8) outside outward and forms filling adaptor, and the other end is connected with flexible grout pipe (7) one ends.
3. 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. mining hollow grouting cable anchor according to claim 3, is characterized in that: be provided with between the described body of rod (8) and screw-threaded coupling cover (1) to increase and hinder spring (4).
5. 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. mining hollow grouting cable anchor according to claim 5 is characterized in that: the described body of rod (8) exposes the steel strand (81) of long 30 mm left and right at screw-threaded coupling cover (1) end.
7. according to claim 1 or 6 described 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 spherical crown aligning nut (2) is provided with a protrusion of axially placing coordinates with the taper surface of pallet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220563174 CN202926355U (en) | 2012-10-31 | 2012-10-31 | Hollow grouting anchor cable for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220563174 CN202926355U (en) | 2012-10-31 | 2012-10-31 | Hollow grouting anchor cable for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926355U true CN202926355U (en) | 2013-05-08 |
Family
ID=48216329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220563174 Expired - Lifetime CN202926355U (en) | 2012-10-31 | 2012-10-31 | Hollow grouting anchor cable for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926355U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016034A (en) * | 2012-11-03 | 2013-04-03 | 孟钧 | Mining hollow grouting anchor cable |
| CN103498691A (en) * | 2013-09-04 | 2014-01-08 | 中国矿业大学 | Mine multiple-steel-strand combination supporting device and method |
| CN103590845A (en) * | 2013-11-28 | 2014-02-19 | 河南理工大学 | Impact-resistant interval grouting anchor cable and use method thereof |
| CN103670467A (en) * | 2013-10-29 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Grouting anchor cable |
| CN109538266A (en) * | 2019-01-25 | 2019-03-29 | 中国矿业大学 | A kind of flexible roof bolt |
| 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 |
| CN110411643A (en) * | 2019-08-21 | 2019-11-05 | 中国矿业大学 | A kind of monitoring device and method of hollow grouting cable anchor slurry pressure |
| CN112392524A (en) * | 2020-11-16 | 2021-02-23 | 山东科技大学 | Geotechnical engineering sectional type cavity slip casting anchor rope device |
| CN114320409A (en) * | 2021-11-25 | 2022-04-12 | 淮北矿业股份有限公司 | Controllable pressure and let slip casting anchor rope of pressure function |
-
2012
- 2012-10-31 CN CN 201220563174 patent/CN202926355U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016034A (en) * | 2012-11-03 | 2013-04-03 | 孟钧 | Mining hollow grouting anchor cable |
| CN103498691A (en) * | 2013-09-04 | 2014-01-08 | 中国矿业大学 | Mine multiple-steel-strand combination supporting device and method |
| CN103498691B (en) * | 2013-09-04 | 2016-03-02 | 中国矿业大学 | A kind of mining many steel strand combination supporting device and method |
| CN103670467A (en) * | 2013-10-29 | 2014-03-26 | 淮南矿业(集团)有限责任公司 | Grouting anchor cable |
| CN103670467B (en) * | 2013-10-29 | 2015-12-30 | 淮南矿业(集团)有限责任公司 | Grouting cable anchor |
| 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 |
| CN103590845A (en) * | 2013-11-28 | 2014-02-19 | 河南理工大学 | Impact-resistant interval grouting anchor cable and use method thereof |
| 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 |
| CN109538266A (en) * | 2019-01-25 | 2019-03-29 | 中国矿业大学 | A kind of flexible roof bolt |
| CN109538266B (en) * | 2019-01-25 | 2023-10-03 | 中国矿业大学 | Flexible anchor rod |
| CN110411643A (en) * | 2019-08-21 | 2019-11-05 | 中国矿业大学 | A kind of monitoring device and method of hollow grouting cable anchor slurry pressure |
| CN112392524A (en) * | 2020-11-16 | 2021-02-23 | 山东科技大学 | Geotechnical engineering sectional type cavity slip casting anchor rope device |
| CN114320409A (en) * | 2021-11-25 | 2022-04-12 | 淮北矿业股份有限公司 | Controllable pressure and let slip casting anchor rope of pressure function |
| CN114320409B (en) * | 2021-11-25 | 2024-02-06 | 淮北矿业股份有限公司 | Grouting anchor cable with pressure-controllable and pressure-yielding functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |
|
| CX01 | Expiry of patent term |