CN203717001U - Flexible prestressed grouting anchor rope - Google Patents

Flexible prestressed grouting anchor rope Download PDF

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Publication number
CN203717001U
CN203717001U CN201420099491.5U CN201420099491U CN203717001U CN 203717001 U CN203717001 U CN 203717001U CN 201420099491 U CN201420099491 U CN 201420099491U CN 203717001 U CN203717001 U CN 203717001U
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China
Prior art keywords
anchor
flexible
steel
cable
pipe
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CN201420099491.5U
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Chinese (zh)
Inventor
王新稳
王�琦
王明远
乔卫国
刘锋珍
李彬
吴新华
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Tai'an Sound Science And Technology Engineering Co Ltd Of Shaking
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Tai'an Sound Science And Technology Engineering Co Ltd Of Shaking
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Abstract

The utility model discloses a flexible prestressed grouting anchor rope which comprises an outer anchor head and a steel rope, wherein a tray and a lockset are mounted on the anchor head body of the outer anchor head; the orifice end of the steel rope is welded on the anchor head body; a hole bottom end forms an inner anchor end; a threaded hole is processed in the center of the head body; a grouting core pipe is arranged in the center of the steel rope; the grouting core pipe is a flexible high-pressure pipe inserted in a high-strength seamless steel pipe; a connecting part is welded on the high-strength seamless steel pipe; the connecting part and the high-strength seamless steel pipe are communicated; the pre-tightening force steel wires of the steel rope are distributed and welded on the periphery of the anchor head body; grouting holes are formed in a segment, near the hole bottom, of the flexible high-pressure pipe at intervals; the grouting holes of flexible high-pressure pipe are sleeved with steel stranded wire support parts; grouting clearances are reserved when the steel rope are propped to open by the steel stranded wire support parts. The flexible prestressed grouting anchor rope solves the technical problem of grouting deep drilling holes in weak surrounding rock laneways.

Description

Flexible prestressing anchor note anchor cable
Technical field
The utility model relates to the anchor cable that engineering support is used.
Background technology
Anchor pole or anchor cable can be used for shaft and drift supporting in mine engineering and other underground constructions, dam reinforcement, landslide control, tunnel reinforcement, the fields such as Soft Soil Foundation Pit reinforcing.Large at some weak surrounding rocks and distortion, generally use grouted anchor bar in destroying serious well lane engineering.The structure of grouted anchor bar is to be mainly provided with outer anchor head in one end of seamless steel pipe, and seamless steel pipe is provided with injected hole.During use, grouted anchor bar is inserted after boring, with grouting pump by steel pipe to slip casting in the crack of boring and boring, by slurries, the full section of anchor cable is anchored in boring, and carrys out reinforce adjoining rock with the diffusion of slurries, slurries solidify the globality of rear raising country rock, and play full length fastening anchorage effect.
But weak surrounding rock distortion is large, features as poor geologic condition, anchor pole also bears radial shear power except bearing axial tension, and anchor rod body is stiffening member, though sometimes anchor rod body not yet reaches the disrumpent feelings limit, shear failure easily occurs, and causes supporting and protection structure unstability.In addition, the slip casting degree of depth is sometimes far longer than the width in tunnel, and the length of the grouted anchor bar needing is very long, and steel tube body can not be crooked, cannot in gun drilling, install.
The structure of anchor cable is mainly to be connected to form by outer anchor head and steel strand cable; Described outer anchor head is thread steel type anchor head body, tray and lockset on anchor head body, described steel strand cable twists into cord-like by the pretightning force steel wire of 6 millimeters of 8 strands of diameters, steel strand cable one end is welded on outer anchor head, other end welding is agglomerating, anchor end in forming after pushing 2 volume resin anchoring agents at the bottom of hole and solidifying.Because anchor cable is flexible, so can install in gun drilling.But anchor cable can not slip casting, cannot be large at weak surrounding rock and distortion, use in destroying serious well lane engineering.
Summary of the invention
In order to address the above problem, the utility model designs a kind of flexible prestressing anchor note anchor cable.
A flexible prestressing anchor note anchor cable, it is comprised of outer anchor head and steel strand cable; Tray and lockset on the anchor head body of outer anchor head, described steel strand cable twists into cord-like by the pretightning force steel wire of 6 millimeters of 6-10 thigh diameters, and the orifice end of steel strand cable is welded on anchor head body, and bottom, hole forms interior anchor end; It is characterized in that, described anchor head body center is processed with screwed hole, and the center of described steel strand cable is provided with slip casting core pipe; Described slip casting core pipe is on high-strength seamless steel pipe, to be plugged with flexible high pressure pipe, and connector is welded on high-strength seamless steel pipe and is interconnected, and the pretightning force steel wire of steel strand cable distributes and is welded on anchor head body around; A spacer segment at the bottom of the close hole of flexible high pressure pipe is provided with injected hole; Injected hole place cover has steel strand support member, and steel strand support member struts steel strand cable to form slip casting gap.
In above-mentioned steel strand cable anchor end be configured with two kinds: the one,, the welding of steel noose hole bottom is agglomerating, adopts resin anchoring agent to form interior anchor end; The 2nd,, steel noose hole bottom is welded with threaded rod.
The length of above-mentioned high-strength seamless steel pipe should be less than the width in tunnel, preferred length 0.8-1.2m.
The preferred 10mm of external diameter of above-mentioned high-strength seamless steel pipe and flexible high pressure pipe, internal diameter 8mm.
In order to protect the screwed hole of outer anchor head, on the screw of outer anchor head, plug is installed.
The utility model mounting method is:
1, bore grouting cable anchor hole
With jumbolter or power supporting leg type accessory anchor bolt drilling machine, at roadway surrounding rock, by design bore position, hole; Drilling depth is less than grouting cable anchor length 25cm.
2, anchor note anchor cable and sealing of hole are installed
When the anchor that anchor end is resin anchoring agent in using is noted anchor cable, in boring, put into 2 volume resin anchoring agents, push in boring together with anchor note anchor cable, then at the bottom of propelling limit in limit is stirred to hole, outer anchor head is exposed at outside hole, and mixing time is no less than 10 seconds, until resin anchoring agent solidifies.
During anchor end is threaded rod in using anchor note anchor cable, anchor is noted to anchor cable and by the rotation direction rotation of threaded rod, push in boring at the bottom of hole, lean on " screw " function of threaded rod to be anchored in boring.
Then at place, aperture, stop grouting plug is installed, is used cotton yarn jam-pack, more successively pallet, spherical washer, lockset are arranged on outer anchor head, anchor cable pallet is close to scar.
Stretch-draw jack is installed and is carried out stretch-draw, stretching force is not less than 100kN, after stretch-draw, with lockset locking, makes anchor note anchor cable produce pretightning force.
3, slip casting
Water/binder ratio in accordance with regulations prepares slurries, stirs, and makes to get final product slip casting after hydrated cementitious.
The plug that unloads the outer anchor head of note anchor cable that casts anchor, is connected to slurry casting machine on outer anchor head screw and tightens up, and slurry casting machine is connected with the Grouting Pipe of grouting pump.Start grouting pump, grouting pump rotating speed is by accelerating gradually slowly, and slip casting while stirring, when the crack around pulp or anchor cable around pallet, bolthole pulp, shows to fill with, and stops slip casting.Unload slurry casting machine, tighten anchor cable afterbody plug, slip casting is complete.
The utlity model has following technical characterstic:
1, the cable body of flexible prestressing anchor note anchor cable is hollow structure, carries slip casting core pipe, has realized slip casting function, and the combination of anchor note, had both solved the shearing resistance problem of grouted anchor bar in weak surrounding rock, had solved again the slip casting problem of anchor cable in weak surrounding rock.
2, the front portion due to flexible prestressing anchor note anchor cable is provided with injected hole at interval of certain distance, belongs to reverse grouting mode, is beneficial to boring exhaust, guarantees that anchoring slurries are full of boring, the stack while having saved common slip casting.
3, the cable body of flexible prestressing anchor note anchor cable adopts resin explosive roll to carry out end anchorage at the bottom of hole, and aperture adopts lockset locking, after installation, can apply prestressing force, and support action is played in carrying immediately, has guaranteed supporting effect.
4, the agent structure due to flexible prestressing anchor note anchor cable is flexible body, can be crooked, be convenient to construction and installation in deep hole.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model embodiment mono-;
Fig. 2 is the A-A section zoomed-in view of Fig. 1;
Fig. 3 is the schematic diagram of the utility model embodiment bis-.
Marginal data: 1-plug, 2-lockset, 3-pallet, 4-grouting plug, 5-anchor head body, 6-high-strength seamless steel pipe, 7-flexible high pressure pipe, 8-steel strand support member, 9-injected hole, 10-pretightning force steel wire, 11-plumb joint, 12-threaded rod.
The specific embodiment
Embodiment mono-: as depicted in figs. 1 and 2, a kind of flexible prestressing grouted anchor bar, it is comprised of outer anchor head and steel strand cable; Pallet 3, grouting plug 4 and lockset 2 are installed on the anchor head body 5 of described outer anchor head, described steel strand cable twists into cord-like by the pretightning force steel wire 10 of 6 millimeters of 6-10 thigh diameters, steel strand cable one end is welded on the anchor head body 5 of outer anchor head, other end welding is agglomerating, by resin anchoring agent, forms plumb joint 11; Described anchor head body 5 centers are processed with screwed hole, and the center of described steel strand cable is provided with slip casting core pipe; Described slip casting core pipe is on high-strength seamless steel pipe 6, to be plugged with flexible high pressure pipe 7, and anchor head body 5 is welded on high-strength seamless steel pipe 6 and is communicated with, and the pretightning force steel wire 10 of steel strand cable distributes and is welded on anchor head body 5 around; One section at the bottom of the close hole of flexible high pressure pipe 7 is provided with injected hole 9 at interval of certain distance; Injected hole 8 place's covers of flexible high pressure pipe 7 have steel strand support member 8, and steel strand support member 8 struts certain slip casting gap by steel strand cable, discharges slurries when slip casting is convenient in this gap.
The length of above-mentioned high-strength seamless steel 6 pipes should be less than the width in tunnel, preferred length 0.8-1.2m.
The preferred 10mm-12 of external diameter of above-mentioned high-strength seamless steel pipe 6 and flexible high pressure pipe 7, internal diameter 8-10mm.
In order to protect the screwed hole of anchor head body 5, plug 1 is installed on the screwed hole of outer anchor head.
Embodiment bis-: as shown in Figure 3, the structure of it and embodiment mono-is basic identical, and wherein the structure of the interior anchor end of steel strand cable is, steel noose hole bottom is welded with threaded rod 12.

Claims (6)

1. a flexible prestressing anchor note anchor cable, is characterized in that, it is comprised of outer anchor head and steel strand cable; Tray and lockset on the anchor head body of outer anchor head, described steel strand cable twists into cord-like by the pretightning force steel wire of 6 millimeters of 6-10 thigh diameters, and the orifice end of steel strand cable is welded on anchor head body, and bottom, hole forms interior anchor end; It is characterized in that, described anchor head body center is processed with screwed hole, and the center of described steel strand cable is provided with slip casting core pipe; Described slip casting core pipe is on high-strength seamless steel pipe, to be plugged with flexible high pressure pipe, and connector is welded on high-strength seamless steel pipe and is interconnected, and the pretightning force steel wire of steel strand cable distributes and is welded on anchor head body around; A spacer segment at the bottom of the close hole of flexible high pressure pipe is provided with injected hole; The injected hole place cover of flexible high pressure pipe has steel strand support member, and steel strand support member struts steel strand cable to form slip casting gap.
2. flexible prestressing anchor note anchor cable as claimed in claim 1, is characterized in that, the welding of steel noose hole bottom is agglomerating, adopts resin anchoring agent to form interior anchor end.
3. flexible prestressing anchor note anchor cable as claimed in claim 1, is characterized in that, steel noose hole bottom is welded with threaded rod and forms interior anchor end.
4. the note of the flexible prestressing anchor as described in claim 1 or 2 or 3 anchor cable, is characterized in that, the length of above-mentioned high-strength seamless steel pipe is 0.8-1.2m.
5. the note of the flexible prestressing anchor as described in claim 1 or 2 or 3 anchor cable, is characterized in that, above-mentioned high-strength seamless steel pipe and the external diameter of flexible high pressure pipe are 10mm, and internal diameter is 8mm.
6. the note of the flexible prestressing anchor as described in claim 1 or 2 or 3 anchor cable, is characterized in that, on the screw of outer anchor head, plug is installed.
CN201420099491.5U 2014-03-05 2014-03-05 Flexible prestressed grouting anchor rope Active CN203717001U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420099491.5U CN203717001U (en) 2014-03-05 2014-03-05 Flexible prestressed grouting anchor rope

Publications (1)

Publication Number Publication Date
CN203717001U true CN203717001U (en) 2014-07-16

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104405423A (en) * 2014-10-23 2015-03-11 山西晋城无烟煤矿业集团有限责任公司 Mining grouting anchor rope
CN104674807A (en) * 2015-02-10 2015-06-03 成都绿迪科技有限公司 Bearing head for anchor rod
CN104727837A (en) * 2014-11-27 2015-06-24 山东海天能源有限公司 High-prestress large-ductility constant-resistance deformation yielding scour prevention anchor cable for mine reinforcing and working process thereof
CN110146358A (en) * 2019-05-31 2019-08-20 中国神华能源股份有限公司 Resin anchor Anchor Agent test sample sample-preparing system and method for making sample

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104405423A (en) * 2014-10-23 2015-03-11 山西晋城无烟煤矿业集团有限责任公司 Mining grouting anchor rope
CN104727837A (en) * 2014-11-27 2015-06-24 山东海天能源有限公司 High-prestress large-ductility constant-resistance deformation yielding scour prevention anchor cable for mine reinforcing and working process thereof
CN104674807A (en) * 2015-02-10 2015-06-03 成都绿迪科技有限公司 Bearing head for anchor rod
CN110146358A (en) * 2019-05-31 2019-08-20 中国神华能源股份有限公司 Resin anchor Anchor Agent test sample sample-preparing system and method for making sample

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