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 PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
sleeve pipe
anchor cable
sleeve
open slot
anchor
Prior art date
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.)
Pending
Application number
CN201410206331.0A
Other languages
Chinese (zh)
Inventor
曲广龙
文志杰
韩作振
贾传洋
文金浩
蒋耀东
高浩政
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University of Science and Technology
Original Assignee
Shandong University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong University of Science and Technology filed Critical Shandong University of Science and Technology
Priority to CN201410206331.0A priority Critical patent/CN104061009A/en
Publication of CN104061009A publication Critical patent/CN104061009A/en
Pending legal-status Critical Current

Links

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

A kind of multistage expands to allow and presses prestressing force grouting cable anchor and using method thereof
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.
CN201410206331.0A 2014-05-16 2014-05-16 Multi-section expansion yielding prestressed grouting anchor cable and application method thereof Pending CN104061009A (en)

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

Publications (1)

Publication Number Publication Date
CN104061009A true CN104061009A (en) 2014-09-24

Family

ID=51548917

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410206331.0A Pending CN104061009A (en) 2014-05-16 2014-05-16 Multi-section expansion yielding prestressed grouting anchor cable and application method thereof

Country Status (1)

Country Link
CN (1) CN104061009A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
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
CN112554183A (en) * 2020-12-11 2021-03-26 中铁二十局集团有限公司 Expandable anchoring device and method

Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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 (3)

* Cited by examiner, † Cited by third party
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
CN112554183A (en) * 2020-12-11 2021-03-26 中铁二十局集团有限公司 Expandable anchoring device and method

Similar Documents

Publication Publication Date Title
EP3147410B1 (en) Construction method and structure of pressure dispersing expansion head anchor rod
CN102877868B (en) Novel expansion-type yielding prestress grouting anchor rope and using method thereof
SU651717A3 (en) Ground anchor and method of fitting same
CN103410543A (en) Pressure yielding internally-grouted anchor cable
CN202596756U (en) Shell-expanding high-strength grouting bolt
CN201236718Y (en) Inner slip-casting anchor cable
CN107829767A (en) A kind of block assembly formula, which allows, presses hollow grouting anchor and its construction method
CN104061009A (en) Multi-section expansion yielding prestressed grouting anchor cable and application method thereof
CN105201514A (en) Water-bearing rock stratum borehole wall structure and construction method
CN203742612U (en) Rapid construction supporting system for deep coal mine roadway with weak and broken surrounding rock
CN202810881U (en) Novel expandable type yielding prestress grouting anchor cable
CN103993891A (en) Rapid roadway construction method for soft and broken surrounding rocks of deep coal mine and support system
CN103899341A (en) Pressure-bearing type end-anchoring high-pretightening-force anchor rod support method
CN204457826U (en) A kind of expansion antiskid anchor pole
CN103103989A (en) End-expansive recoverable anchor rod
CN104018863A (en) Multi-section-expansion yielding prestress grouting anchor rod and using method thereof
CN103590845A (en) Impact-resistant interval grouting anchor cable and use method thereof
CN102877867B (en) Novel inflatable yielding pre-stress grouting anchor rod and usage method thereof
CN204327134U (en) A kind of prestressing force balance anchor cable
CN203584447U (en) Anti-impact interval grouting anchor cable
CN203925548U (en) A kind of multistage expands to allow and presses prestressing force grouting cable anchor
CN109083668A (en) A kind of grouting and reinforcing anchor pole suitable for high stress breaking surrounding rock supporting
CN203925549U (en) A kind of multistage expands to allow and presses prestressing force grouted anchor bar
CN103696792A (en) Multi-stage conical synchronous expansion anchor rod
CN108343458A (en) Overall length bonds large deformation pressure-relieving achor bar and its construction method

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20140924