CN207420609U - A kind of detachable hollow grouting anchor of constant resistance and large deformation - Google Patents
A kind of detachable hollow grouting anchor of constant resistance and large deformation Download PDFInfo
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- CN207420609U CN207420609U CN201721448751.5U CN201721448751U CN207420609U CN 207420609 U CN207420609 U CN 207420609U CN 201721448751 U CN201721448751 U CN 201721448751U CN 207420609 U CN207420609 U CN 207420609U
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- Prior art keywords
- section
- detachable
- permanent anchorage
- anchorage section
- permanent
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Abstract
The utility model provides a kind of detachable hollow grouting anchor of constant resistance and large deformation, including detachable section, permanent anchorage section, square backing plate, nut and stop grouting plug, one end of detachable section is sequentially arranged stop grouting plug, square backing plate and nut, the detachable other end of section is threadedly coupled with one end of permanent anchorage section by first, external screw thread processing is done in detachable section, internal thread processing is done in permanent anchorage section, the connection of detachable section and permanent anchorage section is realized by internal and external threads, permanent anchorage section is threadedly coupled with circular shim by second, external screw thread processing is done in permanent anchorage section and circular shim junction, a hole passed through for permanent anchorage section is opened among circular shim, and internal thread processing is done in described hole, the connection of permanent anchorage section and circular shim is realized by internal and external threads.The utility model can be realized according to pressure from surrounding rock allow compressive strain, when deformation becomes it is steady when, and can be easy to operate by the detachable section of disassembly ＆ recycling, it is easy for construction.
Description
Technical field
The utility model belongs to geotechnical engineering supporting construction field, and in particular to a kind of constant resistance and large deformation is detachable hollow
Grouted anchor bar.
Background technology
In the geotechnical engineering process of construction of the fields such as tunnel, water conservancy, mine working, anchor pole becomes the branch being most widely used
Protect equipment.Hollow grouting anchor is common supporting tool, bury in the earth formation, by the tensile capacity of itself high intensity with
And with the mode of closely knit combination gets up stratum consolidation between injecting cement paste and stratum around anchor pole, to improve the globality on stratum,
Stratum deformation is controlled, makes up to stable safe condition.
However, in deep rock mass, at tunnel excavation initial stage, surrouding rock deformation is strong, speed is fast, energy release is violent, deformation
With unconquerable property, therefore, it is desirable that anchor bar body can both have constant supporting intensity, while also have certain deformation energy
Power.Such as Chinese patent (application number：201210020742.1 denomination of invention：Increase resistance pressure-relieving achor bar) pressure is allowed by the increasing that is equipped with resistance
Mechanism can occur large deformation in country rock and be stretched elongation, and roadway surrounding rock offer is incrementally increased with the growth of anchor pole
Working resistance.In addition, with the needs of large-scale geotechnical engineering construction, requirement of engineering the more stage by stage or implements ability step by step
It completes, it is only necessary to which a part of anchor pole plays long term, remaining is then recycled as far as possible, such as Chinese patent (application number：
201010617230.4 utility model title：A kind of detachable anchor), will be arranged backing plate anchor bar body detachable section with
Injecting cement paste is isolated, and after the completion of anchoring, can be removed all components on the outside of this section of anchor bar body, retains permanent anchorage section.
The utility model combines at above-mentioned 2 points, provides a kind of constant resistance and large deformation detachable hollow grouting anchor, both can be with
Certain increasing resistance yielding property energy is provided, can also realize the part disassembly ＆ recycling of anchor pole, it is easy to operate, it is easy for construction.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of detachable hollow grouting anchor of constant resistance and large deformation,
Both the increasing resistance for having realized anchor pole allows pressure, also can part disassembly ＆ recycling.
In order to achieve the above object, the utility model is achieved by the following technical programs：
A kind of detachable hollow grouting anchor of constant resistance and large deformation, including detachable section, permanent anchorage section, circular shim,
Square backing plate, nut and stop grouting plug, one end of the detachable section are sequentially arranged the stop grouting plug, square backing plate and nut, institute
It states the other end of detachable section to be threadedly coupled by first with one end of permanent anchorage section, external screw thread processing is done in detachable section,
Internal thread processing is done in permanent anchorage section, realizes the connection of detachable section and permanent anchorage section by internal and external threads, described first
The connection length of screw thread is 200-500mm, and the permanent anchorage section is threadedly coupled with circular shim by second, described permanent
Anchoring section does external screw thread processing with circular shim junction, and a hole passed through for permanent anchorage section is opened among circular shim
Hole, and internal thread processing is done in described hole, the connection of permanent anchorage section and circular shim is realized by internal and external threads, it is described
The effect during slip casting that act as of circular shim isolates the detachable section and permanent anchorage section, makes slurries only described permanent
Anchoring section is unlikely to flow into the detachable section with being filled in country rock, the note when effect of the stop grouting plug is to control construction
Slurry process.
Further, the circular shim is equipped with 2-4 gas vent.
Further, the detachable section and permanent anchorage section are internal after being threadedly coupled by first forms a cylinder
Hollow channel, for reperfusion reinforcement slurries, the length of the detachable section is 500-1500mm, the length of the permanent anchorage section
It spends for 1000-2500mm.
The beneficial effects of the utility model are：
A kind of detachable hollow grouting anchor of constant resistance and large deformation of the utility model realizes detachable section by internal and external threads
With the connection of permanent anchorage section, and be threadedly coupled have certain length, if in actual supporting, surrouding rock deformation is gradually big, feels
Pressure is critical, and can increase and be threadedly coupled length by rotating detachable section, increases bolt deformation amount, and realization allows compressive strain；If it encloses
Rock deformation gradually becomes steady, it is only necessary to which permanent anchorage section plays long-term reinforcement effect, can also rotate out of detachable section, and recycling is detachable
The metals resources such as section, square backing plate, nut meet current green, the call of sustainable development.
Description of the drawings
To be illustrated more clearly that the utility model embodiment or technical solution of the prior art, below will to embodiment or
Attached drawing in description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments, for those of ordinary skill in the art, without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of detachable hollow grouting anchor structure diagram of constant resistance and large deformation of the utility model；
Fig. 2 is threadedly coupled sectional view for the detachable section of the utility model with permanent anchorage section；
Fig. 3 is the utility model circular shim cross-sectional view of the structure；
Fig. 4 is threadedly coupled sectional view for the utility model permanent anchorage section with circular shim；
Fig. 5 is a kind of detachable hollow grouting anchor embodiment 1 of constant resistance and large deformation of the utility model adding in country rock
Gu schematic diagram；
Fig. 6 is a kind of detachable hollow grouting anchor embodiment 2 of constant resistance and large deformation of the utility model adding in country rock
Gu schematic diagram；
Wherein：1st, detachable section；2nd, permanent anchorage section；3rd, circular shim；4th, square backing plate；5th, nut；6th, stop grouting plug；7、
First screw thread；8th, the second screw thread；9th, gas vent；10th, external screw thread；11st, internal thread；12nd, slurries reinforcing body；13rd, country rock
Specific embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Example is applied, all other embodiment that those of ordinary skill in the art are obtained under the premise of not making the creative labor belongs to
The scope of the utility model protection.
With reference to attached drawing 1 to Fig. 6, the utility model is described in further detail.
Embodiment 1：
As shown in Figure 1, a kind of detachable hollow grouting anchor of constant resistance and large deformation, including detachable section 1, permanent anchorage section
2nd, circular shim 3, square backing plate 4, nut 5 and stop grouting plug 6, detachable section 1 and permanent anchorage section 2 using it is common it is with ribbing in
Empty grouted anchor bar, the length of detachable section 1 are 1000mm, and the length of permanent anchorage section 2 is 1500mm, one end of detachable section 1
It is sequentially arranged stop grouting plug 6, square backing plate 4 and nut 5.
As depicted in figs. 1 and 2, the other end of detachable section 1 is connected with one end of permanent anchorage section 2 by the first screw thread 7,
External screw thread 10 is done in detachable section 1 to handle, doing internal thread 11 in permanent anchorage section 2 is handled, and is realized by internal and external threads detachable
The connection of section 1 and permanent anchorage section 2, the connection length of the first screw thread 7 is 500mm.
Shown as shown in Figure 1, Figure 3 and Figure 4, permanent anchorage section 2 is connected with circular shim 3 by the second screw thread 8, in permanent anchorage
Section 2 is done external screw thread 10 with 1 junction of circular shim and is handled, and a hole passed through for permanent anchorage section 2 is opened among circular shim 3
Hole, and do internal thread 11 in described hole and handle, the connection of permanent anchorage section 2 and circular shim 3 is realized by internal and external threads,
Circular shim 3 is equipped with 4 gas vents 9.
Circular shim 3 act as being effectively isolated detachable section 1 and permanent anchorage section 2 during slip casting, makes slurries only
It is filled in permanent anchorage section 2 and country rock 13 and is unlikely to flow at detachable section 1, and the effect of stop grouting plug 6 is that control is applied
The slip casting process in man-hour.
As shown in figure 5, a kind of embodiment party of the detachable hollow grouting anchor embodiment 1 of constant resistance and large deformation of the utility model
Formula is that detachable section 1 and permanent anchorage section 2 are integral by the connection of the first screw thread 7, and circular shim 3 is passed through second
Screw thread 8 is connected in permanent anchorage section 2, and when construction drills first and borehole cleaning, and bore diameter should be suitable with 3 diameter of circular shim,
The hollow grouting anchor that connection finishes is squeezed into drilling, passes through the cylindrical, hollow that detachable section 1 and permanent anchorage section 2 are formed
Passage injection reinforcing slurries, while by the outflow of 6 reed time controll slurries of stop grouting plug, it is simultaneously real with country rock 13 to form slurries reinforcing body 12
Connection is now reinforced, voidage of the grouting amount between permanent anchorage section 2 and country rock 13 is advisable, installs square backing plate 4 and tighten spiral shell
Mother 5, so as to complete the installation of anchor pole.With the increase of suspension roof support time, by the deformation of field monitoring country rock, if surrouding rock deformation
It is gradually big, it feels the stress and is critical, can first unscrew nut 5, by rotating detachable section 1, suitably increase detachable section 1 and permanent anchorage
The length that first screw thread 7 connects in section 2 increases rock-bolt length, plays allowing compressive strain effect；If surrouding rock deformation flattens out slow, it is only necessary to
Permanent anchorage section 2 plays a role, after slurries reinforcing body 12 reaches consolidation age, permanent anchorage section 2 and 13 secure bond of country rock,
Nut 5 can be unscrewed, removes square backing plate 4, rotates out of detachable section 1, completes returning for detachable section 1, square backing plate 4 and nut 5
It receives.
Embodiment 2：
As shown in fig. 6, reinforcement criteria relatively low project situation weaker for pressure from surrounding rock, detachable section 1 and permanent reinforcement
Section 2 can use general hollow round steel, remaining condition and form of construction work are same as Example 1.
Above example is only to illustrate the technical solution of the utility model, rather than its limitations；Although with reference to foregoing reality
It applies example the utility model is described in detail, those of ordinary skill in the art should be understood：It still can be to foregoing
Technical solution recorded in embodiment modifies or carries out equivalent substitution to some technical characteristics therein, and these are repaiied
Change or replace, the essence of appropriate technical solution is not made to depart from the spirit and scope of the utility model embodiment technical solution.
Claims (3)
1. a kind of detachable hollow grouting anchor of constant resistance and large deformation, including detachable section (1), permanent anchorage section (2), circular pad
Plate (3), square backing plate (4), nut (5) and stop grouting plug (6), one end of the detachable section (1) are sequentially arranged the stop grouting plug
(6), square backing plate (4) and nut (5), the other end of the detachable section (1) pass through first with one end of permanent anchorage section (2)
Screw thread (7) connects, and external screw thread (10) processing is done in detachable section (1), does internal thread (11) processing in permanent anchorage section (2), leads to
The connection that internal and external threads realize detachable section (1) and permanent anchorage section (2) is crossed, the connection length of the first screw thread (7) is 200-
500mm, the permanent anchorage section (2) are connected with circular shim (3) by the second screw thread (8), the permanent anchorage section (2) with
External screw thread (10) processing is done in circular shim (3) junction, and open one among circular shim (3) passes through for permanent anchorage section (2)
Hole, and do in described hole internal thread (11) processing, pass through internal and external threads and realize permanent anchorage section (2) and circular shim
(3) connection.
A kind of 2. detachable hollow grouting anchor of constant resistance and large deformation as described in claim 1, which is characterized in that the circle
Backing plate (3) is equipped with 2-4 gas vent (9).
3. a kind of detachable hollow grouting anchor of constant resistance and large deformation as described in claim 1, which is characterized in that described removable
One cylindrical hollow channel of internal formation after section (1) and permanent anchorage section (2) are connected by the first screw thread (7) is unloaded, it is described
The length of detachable section (1) is 500-1500mm, and the length of the permanent anchorage section (2) is 1000-2500mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721448751.5U CN207420609U (en) | 2017-11-02 | 2017-11-02 | A kind of detachable hollow grouting anchor of constant resistance and large deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721448751.5U CN207420609U (en) | 2017-11-02 | 2017-11-02 | A kind of detachable hollow grouting anchor of constant resistance and large deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207420609U true CN207420609U (en) | 2018-05-29 |
Family
ID=62306938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721448751.5U Expired - Fee Related CN207420609U (en) | 2017-11-02 | 2017-11-02 | A kind of detachable hollow grouting anchor of constant resistance and large deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207420609U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989776A (en) * | 2019-03-12 | 2019-07-09 | 杭州钜力锚杆科技有限公司 | A kind of connector for recoverable anchor pole |
-
2017
- 2017-11-02 CN CN201721448751.5U patent/CN207420609U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989776A (en) * | 2019-03-12 | 2019-07-09 | 杭州钜力锚杆科技有限公司 | A kind of connector for recoverable anchor pole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20181102 |