CN104061009A - Multi-section expansion yielding prestressed grouting anchor cable and application method thereof - Google Patents
Multi-section expansion yielding prestressed grouting anchor cable and application method thereof Download PDFInfo
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- CN104061009A CN104061009A CN201410206331.0A CN201410206331A CN104061009A CN 104061009 A CN104061009 A CN 104061009A CN 201410206331 A CN201410206331 A CN 201410206331A CN 104061009 A CN104061009 A CN 104061009A
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- sleeve pipe
- anchor cable
- sleeve
- open slot
- locking device
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Abstract
The invention discloses a multi-section expansion yielding prestressed grouting anchor cable, belongs to the field of grouting anchor cables for mine engineering supporting, and solves the problem of poor supporting effect of anchor cables in the prior art. The grouting anchor cable provided by the invention comprises an anchor cable body, a tray, a sleeve and a locking device, wherein the tray and the locking device are arranged at the tail part of the anchor cable body in sequence in a sleeving way; the sleeve is formed by sequentially connecting a sleeve I, a sleeve II and a sleeve III; ring-shaped flanges are arranged in corresponding positions on the sleeve I and the sleeve II; an open slot II and an open slot III are formed in corresponding positions on the sleeve II and the sleeve III; the head part of the sleeve I is propped against the locking device; the tail part of the sleeve III is propped against a conical head. The locking device is in mutual contact with the tray and the sleeve to exert pulling force on an anchor cable rod body, the sleeve receives the action of axial pressure, the open slots are squeezed by the locking device, the flange or the conical head, the open slots expand to open and are pressed on a hole wall to increase the force of friction with the hole wall, so that the whole anchor cable achieves a higher anchoring effect.
Description
Technical field
The invention belongs to the grouting cable anchor field that in the underground constructions such as Hydraulic and Hydro-Power Engineering, construction of tunnel, mine engineering, supporting is used, be specifically related to a kind of multistage and expand to allow and press prestressing force grouting cable anchor.
Background technology
In the domain engineering processs of construction such as tunnel, water conservancy, mine working, anchor cable becomes most widely used support apparatus.Anchor cable can improve rock mass self mechanical property, give full play to rock mass self-supporting ability, ensure the monolithic stability of rock slope body and country rock and safety, can betterment works environment and workmanship, saving engineering material and cost, reduction of erection time.Cable bolting, not only for preliminary bracing, is also a part for permanent support.In mine timbering, substantially having replaced passive support or temporary support structures becomes basic temporary lining technology, and sometimes becomes permanent support structure after combining use with steel mesh reinforcement, sprayed mortar.But exist crack and rock loose in the situation that at country rock, depend merely on anchorage effect that anchor cable is single and also do not reach and effectively make country rock effectively be combined into one, improve the object of country rock self bearing pressure.
Various grouting cable anchors are there are on the market at present, formed by anchor cable body, pallet and locking device, anchor cable body is the hollow structure for carrying slip casting core pipe, adopt reverse grouting mode, anchor cable body opening bottom is with mixing resin explosive roll end anchor, slurries can be injected to unconsolidated rock by slip casting core pipe, thereby anchor cable body is combined into one with country rock effectively, improve the object of country rock carrying self pressure; But, above-mentioned this grouting cable anchor is without first anchor-hold, after only having slurries to be solidified to some strength, just produce anchorage effect, and anchoring effect is poor, patent CN102877868A discloses a kind of Novel expansion and has allowed and press prestressing force grouting cable anchor, this anchor cable can possess certain first anchor-hold, but this grouting cable anchor is to carry out slip casting from the open slot of expansion tube front end, in order to obtain better anchoring effect, increase the anchored force of anchor cable, be badly in need of a kind of multistage and expand to allow and press prestressing force grouting cable anchor.
Summary of the invention
For wall-rock crack and the loose situation of rock, in order to obtain better anchoring effect, the present invention proposes a kind of multistage and expand to allow and press prestressing force grouting cable anchor, this anchor cable can be realized multi-stage cementing, and possesses high just anchor-hold.
Technical solution of the present invention comprises:
A kind of multistage expands to allow and presses prestressing force grouting cable anchor, comprise anchor cable body, pallet and locking device, described anchor cable body is the hollow structure that carries slip casting core pipe, described pallet and locking device are nested with the afterbody at anchor cable body in turn, the head of described anchor cable body is also connected with the hollow lever with conical head, on described conical head, be provided with open slot, described slip casting core pipe stretches in described hollow lever, on described anchor cable body, be equipped with sleeve pipe, described sleeve pipe is by sleeve pipe one, sleeve pipe two and sleeve pipe three are formed by connecting, described sleeve pipe one is near anchor cable body afterbody, described sleeve pipe three is near anchor cable body head, described sleeve pipe two is between sleeve pipe one and sleeve pipe two,
Described sleeve pipe one, sleeve pipe two, sleeve pipe three diameters are identical and be less than the diameter of described conical head, and the head of described sleeve pipe one withstands on described locking device, and afterbody is provided with annular shape flange one; The head of described sleeve pipe two is provided with open slot two, and afterbody is provided with annular shape flange two, and described sleeve pipe two is combined by open slot two and the trailer card of sleeve pipe one; Described sleeve pipe three heads and afterbody are provided with open slot three, and the open slot three at its head place is combined with the trailer card of sleeve pipe two, and the open slot three at afterbody place withstands on described conical head; On the anchor cable body of described open slot two, open slot three corresponding sections, be provided with injected hole.
As a preferred version of the present invention, above-mentioned pallet is made up of two overlapping disk bodies that interlock, and one of them disk body has been to allow the dish-shaped shape disk body of pressure effect, and another disk body is the loudspeaker head disk body for stopping up hell.
Above-mentioned multistage expands to allow and presses the using method of prestressing force grouting cable anchor, comprises the following steps:
Petrosal foramen is beaten in a punching on country rock, and described petrosal foramen is consistent with sleeve pipe external diameter;
B installs, and successively sleeve pipe three, sleeve pipe two, sleeve pipe one is enclosed within on anchor cable body, puts into described in step a in petrosal foramen, then fills pallet, locking device;
C is connected to special grouting equipment on anchor cable body exposed junction, and wall-rock crack is carried out to slip casting, and slurries are permeated to wall-rock crack.
The useful technique effect that the present invention brings:
The invention discloses a kind of multistage expands to allow and presses prestressing force grouting cable anchor and using method thereof, compared with prior art, the sleeve pipe being nested with on its body of rod comprises sleeve pipe one, sleeve pipe two and sleeve pipe three, and on sleeve pipe two and sleeve pipe three, be respectively equipped with open slot two and open slot three, locking device and pallet in the process of twisting locking device, sleeve pipe is in contact with one another, anchor cable body is applied to pulling force, sleeve pipe is subject to axial compression effect, open slot two, open slot three and locking device, flange or conical head push, open slot two and open slot three distendings arranged, be squeezed on hole wall, increase the frictional force with hole wall, make entirety there is higher anchorage effect, in addition, on the anchor cable body at open slot two, open slot three places, be provided with injected hole, can realize multi-stage cementing, increase the anchored force of anchor cable, pallet is subject to the effect of locking device axial compression simultaneously, and butterfly shape disk body is compressed, and overall cable bolting is played to the pressure effect that allows, and loudspeaker head disk body is clamp-oned in petrosal foramen, blocks petrosal foramen.
Grouting cable anchor of the present invention is easy for installation, possesses high just anchor-hold and allows pressure effect, has good supporting effect in the time that large deformation appears in country rock; The present invention's dish shape pallet not only plays the pressure effect that allows, but also can be used as the stifled slurry of grouting plug, saves operation.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is done to further clear, complete explanation:
Fig. 1 is the sectional drawing of grouting cable anchor of the present invention along anchor cable length direction;
Fig. 2 is the structural representation of sleeve pipe one of the present invention;
Fig. 3 is the structural representation of sleeve pipe two of the present invention;
Fig. 4 is the structural representation of sleeve pipe three of the present invention;
In figure, 1, locking device, 2, dish-shaped shape disk body, 3, loudspeaker head disk body, 4, anchor cable body, 5, sleeve pipe, 6, slip casting core pipe, 7, hollow lever, 8, open slot, 9, injected hole, 10, sleeve pipe one, 11, sleeve pipe two, 12, sleeve pipe three.
Detailed description of the invention
The invention discloses a kind of multistage and expand to allow and press prestressing force grouting cable anchor and using method thereof, in order to make advantage of the present invention, technical scheme clearer, clear and definite, below in conjunction with specific embodiment, the present invention is done to further clear, complete explanation.
Shown in Fig. 1, the present invention, a kind of multistage expands to allow and presses prestressing force grouting cable anchor, it comprises locking device 1, pallet, anchor cable body 4 and conical head, conical head is positioned at the front portion of anchor cable body 4, the diameter of conical head is greater than the diameter of the anchor cable body of rod, and be less than the diameter of boring or petrosal foramen, locking device 1 and pallet are positioned at afterbody, locking device 1 is leaning on a caudal side, the structure of locking device is general knowledge known in this field, do not elaborate at this, anchor cable body 4 is for carrying the hollow structure of slip casting core pipe 6, on conical head, be provided with open slot 8, slip casting core pipe 6 stretches in hollow lever 7,
Sleeve pipe 5 is nested with on anchor cable body 4, different from prior art middle sleeve: sleeve pipe of the present invention is not only only in the open slot 8 places slip casting of its head, sleeve pipe of the present invention is divided into multistage, from the afterbody end of anchor cable body, be followed successively by sleeve pipe 1, sleeve pipe 2 11 and sleeve pipe 3 12, the head of sleeve pipe 1 withstands on locking device 1, sleeve pipe 2 11 and sleeve pipe 1, sleeve pipe 3 12 and sleeve pipe 2 11 are fastened togather respectively, the afterbody of sleeve pipe 3 12 withstands on conical head, its concrete structure is in conjunction with Fig. 2, Fig. 3, shown in Fig. 4, as we can see from the figure: the afterbody of sleeve pipe 1 is provided with annular shape flange one, the head of sleeve pipe 2 11 is provided with open slot two, afterbody is provided with annular shape flange two, sleeve pipe 2 11 is combined by open slot two and the trailer card of sleeve pipe 1, sleeve pipe 3 12 heads and afterbody are provided with open slot three, the open slot three at its head place is combined with the trailer card of sleeve pipe 2 11, and the open slot three at afterbody place withstands on conical head, on the body of rod of open slot one, open slot two, open slot three corresponding sections, be provided with injected hole (this injected hole is not shown, only shows the injected hole 9 on conical head), as the injected hole 9 on conical head has been shown in Fig. 1,
The number of above-mentioned sleeve pipe two is come quantitatively according to the length of anchor cable body, by the number that increases sleeve pipe two, the head of sleeve pipe one is withstood on locking device, the afterbody of sleeve pipe three withstands on conical head, so, the number of sleeve pipe two of the present invention is not limited only to shown in figure, can also have multiple;
Above-mentioned pallet is made up of two overlapping disk bodies that interlock, and one of them disk body has been to allow the dish-shaped shape disk body 2 of pressure effect, and another disk body is the loudspeaker head disk body 3 for stopping up hell;
Above-mentioned multistage expands to allow and presses the using method of prestressing force grouting cable anchor, and it comprises the following steps:
First, punch out step is beaten petrosal foramen on country rock, and petrosal foramen and sleeve pipe external diameter are consistent;
Secondly, installation steps, are enclosed within sleeve pipe three, sleeve pipe two, sleeve pipe one on anchor cable body successively, put into described in step a in petrosal foramen, then fill pallet, locking device;
Finally, slip casting step, is connected to special grouting equipment on anchor cable body exposed junction, and wall-rock crack is carried out to slip casting, and slurries are permeated to wall-rock crack, and its concrete slip casting step is general knowledge known in this field, at this, does not do superfluous stating in detail.
Multistage of the present invention expands to allow and presses the operating principle of prestressing force grouting cable anchor to be:
In the process of stubborn locking device 1, locking device 1 is in contact with one another with pallet, sleeve pipe 1, the anchor cable body of rod is applied to pulling force, sleeve pipe 1 produces axial compression effect, sleeve pipe one 10 squeezing bushings 2 11, and sleeve pipe 3 12 is subject to the impact of anchor cable body of rod conical head, open slot two on sleeve pipe 2 11 and sleeve pipe 3 12, open slot three distendings, be squeezed on hole wall, increase the frictional force with hole wall, make entirety have certain anchorage effect, open slot two, the anchor cable body of rod corresponding to open slot three places are provided with injected hole in addition, can realize again multi-stage cementing; Pallet is subject to locking device 1 axial compression effect simultaneously, and butterfly shape disk body 2 is compressed, and overall cable bolting is played to the pressure effect that allows, and loudspeaker head disk body 3 is clamp-oned in petrosal foramen, can block petrosal foramen.
Claims (3)
1. a multistage expands to allow and presses prestressing force grouting cable anchor, comprise anchor cable body, pallet and locking device, described anchor cable body is the hollow structure that carries slip casting core pipe, described pallet and locking device are nested with the afterbody at anchor cable body in turn, the head of described anchor cable body is also connected with the hollow lever with conical head, on described conical head, be provided with open slot, described slip casting core pipe stretches in described hollow lever, it is characterized in that:
On described anchor cable body, be equipped with sleeve pipe, described sleeve pipe is to be formed by connecting by sleeve pipe one, sleeve pipe two and sleeve pipe three, and described sleeve pipe one is near anchor cable body afterbody, and described sleeve pipe three is near anchor cable body head, and described sleeve pipe two is between sleeve pipe one and sleeve pipe two;
Described sleeve pipe one, sleeve pipe two, sleeve pipe three diameters are identical and be less than the diameter of described conical head, and the head of described sleeve pipe one withstands on described locking device, and afterbody is provided with annular shape flange one; The head of described sleeve pipe two is provided with open slot two, and afterbody is provided with annular shape flange two, and described sleeve pipe two is combined by open slot two and the trailer card of sleeve pipe one; Described sleeve pipe three heads and afterbody are provided with open slot three, and the open slot three at its head place is combined with the trailer card of sleeve pipe two, and the open slot three at afterbody place withstands on described conical head; On the anchor cable body of described open slot two, open slot three corresponding sections, be provided with injected hole.
2. multistage according to claim 1 expands to allow and presses prestressing force grouting cable anchor, it is characterized in that: described pallet is made up of two overlapping disk bodies that interlock, one of them disk body has been to allow the dish-shaped shape disk body of pressure effect, and another disk body is the loudspeaker head disk body for stopping up hell.
3. multistage according to claim 2 expands to allow and presses the using method of prestressing force grouting cable anchor, it is characterized in that: comprise the following steps:
Petrosal foramen is beaten in a punching on country rock, and described petrosal foramen is consistent with sleeve pipe external diameter;
B installs, and successively sleeve pipe three, sleeve pipe two, sleeve pipe one is enclosed within on anchor cable body, puts into described in step a in petrosal foramen, then fills pallet, locking device;
C is connected to special grouting equipment on anchor cable body exposed junction, and wall-rock crack is carried out to slip casting, and slurries are permeated to wall-rock crack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410206331.0A CN104061009A (en) | 2014-05-16 | 2014-05-16 | Multi-section expansion yielding prestressed grouting anchor cable and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410206331.0A CN104061009A (en) | 2014-05-16 | 2014-05-16 | Multi-section expansion yielding prestressed grouting anchor cable and application method thereof |
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| CN104061009A true CN104061009A (en) | 2014-09-24 |
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| CN201410206331.0A Pending CN104061009A (en) | 2014-05-16 | 2014-05-16 | Multi-section expansion yielding prestressed grouting anchor cable and application method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653209A (en) * | 2015-01-23 | 2015-05-27 | 山东大学 | Multistage resistance-increasing anchor rod and construction method |
| CN106759326A (en) * | 2016-12-14 | 2017-05-31 | 重庆大学 | A kind of Stress Control multistage opening type anchor pole and anchoring construction method |
| CN107740702A (en) * | 2017-11-14 | 2018-02-27 | 缪协兴 | A kind of pressure-release anchor cable |
| CN110469353A (en) * | 2019-08-14 | 2019-11-19 | 四川大学 | Mechanical prestressed anchor and its installation and recovery method can be recycled in one kind |
| CN111828068A (en) * | 2020-08-21 | 2020-10-27 | 福州大学 | Multi-section sequential full-recovery type tunnel face advanced anchor rod and application method thereof |
| CN112065480A (en) * | 2020-08-21 | 2020-12-11 | 福州大学 | Tunnel face recyclable advanced grouting anchor cable and application method thereof |
| CN112554183A (en) * | 2020-12-11 | 2021-03-26 | 中铁二十局集团有限公司 | Expandable anchoring device and method |
| CN113374514A (en) * | 2021-07-07 | 2021-09-10 | 太原理工大学 | Method for controlling staggered-layer internal-staggered gob-side entry driving surrounding rock by anchor grouting technology |
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| DE4443131A1 (en) * | 1994-07-01 | 1996-01-04 | Willich F Berg Bautechnik | Rock strata consolidating anchor, with solid or hollow core, and plastic outer casing |
| CN2238911Y (en) * | 1995-12-12 | 1996-10-30 | 李永和 | Whole-long anchor fixed wedge expansion plastic-steel whole-long archor pin |
| DE102010016484A1 (en) * | 2009-08-20 | 2011-02-24 | Friedr. Ischebeck Gmbh | Coupling for connecting anchor rods |
| CN102877868A (en) * | 2012-09-26 | 2013-01-16 | 山东科技大学 | Novel expansion-type yielding prestress grouting anchor rope and using method thereof |
| CN202882965U (en) * | 2012-10-24 | 2013-04-17 | 西安科技大学 | Non-resin multi-anchor rock bolt capable of stopping rotation reversely |
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2014
- 2014-05-16 CN CN201410206331.0A patent/CN104061009A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4443131A1 (en) * | 1994-07-01 | 1996-01-04 | Willich F Berg Bautechnik | Rock strata consolidating anchor, with solid or hollow core, and plastic outer casing |
| CN2238911Y (en) * | 1995-12-12 | 1996-10-30 | 李永和 | Whole-long anchor fixed wedge expansion plastic-steel whole-long archor pin |
| DE102010016484A1 (en) * | 2009-08-20 | 2011-02-24 | Friedr. Ischebeck Gmbh | Coupling for connecting anchor rods |
| CN102877868A (en) * | 2012-09-26 | 2013-01-16 | 山东科技大学 | Novel expansion-type yielding prestress grouting anchor rope and using method thereof |
| CN202882965U (en) * | 2012-10-24 | 2013-04-17 | 西安科技大学 | Non-resin multi-anchor rock bolt capable of stopping rotation reversely |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653209A (en) * | 2015-01-23 | 2015-05-27 | 山东大学 | Multistage resistance-increasing anchor rod and construction method |
| CN106759326A (en) * | 2016-12-14 | 2017-05-31 | 重庆大学 | A kind of Stress Control multistage opening type anchor pole and anchoring construction method |
| CN107740702A (en) * | 2017-11-14 | 2018-02-27 | 缪协兴 | A kind of pressure-release anchor cable |
| CN110469353A (en) * | 2019-08-14 | 2019-11-19 | 四川大学 | Mechanical prestressed anchor and its installation and recovery method can be recycled in one kind |
| CN110469353B (en) * | 2019-08-14 | 2024-05-28 | 四川大学 | Recyclable mechanical prestress anchor rod and mounting and recycling method thereof |
| CN111828068A (en) * | 2020-08-21 | 2020-10-27 | 福州大学 | Multi-section sequential full-recovery type tunnel face advanced anchor rod and application method thereof |
| CN112065480A (en) * | 2020-08-21 | 2020-12-11 | 福州大学 | Tunnel face recyclable advanced grouting anchor cable and application method thereof |
| CN112065480B (en) * | 2020-08-21 | 2024-06-14 | 福州大学 | Recyclable advanced grouting anchor cable for tunnel face and application method thereof |
| CN112554183A (en) * | 2020-12-11 | 2021-03-26 | 中铁二十局集团有限公司 | Expandable anchoring device and method |
| CN113374514A (en) * | 2021-07-07 | 2021-09-10 | 太原理工大学 | Method for controlling staggered-layer internal-staggered gob-side entry driving surrounding rock by anchor grouting technology |
| CN113374514B (en) * | 2021-07-07 | 2022-11-25 | 太原理工大学 | Method for controlling staggered-layer internal-staggered gob-side entry driving surrounding rock by anchor grouting technology |
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Application publication date: 20140924 |
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