CN206545517U - It is easy to monitor the hollow grouting anchor of axle power - Google Patents
It is easy to monitor the hollow grouting anchor of axle power Download PDFInfo
- Publication number
- CN206545517U CN206545517U CN201720053515.7U CN201720053515U CN206545517U CN 206545517 U CN206545517 U CN 206545517U CN 201720053515 U CN201720053515 U CN 201720053515U CN 206545517 U CN206545517 U CN 206545517U
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- CN
- China
- Prior art keywords
- bar body
- anchor bar
- threaded anchor
- cannulated threaded
- hole
- 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.)
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Abstract
The utility model discloses a kind of hollow grouting anchor for being easy to monitor axle power, including cannulated threaded anchor bar body and distribution type fiber-optic, run through to be provided with axial slip casting central through hole, the axial slip casting central through hole of cannulated threaded anchor bar body inside cannulated threaded anchor bar body and be provided with distribution type fiber-optic；Cannulated threaded anchor bar body head end end is provided with drill bit, the aperture of the axial slip casting central through hole of drill bit closing；Cannulated threaded anchor bar body tail end is provided with stop grouting plug, and cannulated threaded anchor bar body threads suit is connected with nut, is fitted close between nut and stop grouting plug and is provided with backing plate；Distribution type fiber-optic one end is close to the head end of cannulated threaded anchor bar body, and axial slip casting central through hole is stretched out in other end end at hollow threaded anchor rod body tail end；Epoxide-resin glue is filled in the axial slip casting central through hole of cannulated threaded anchor bar body.The utility model is by monitoring distributive fiber optic strain value to accurately reflect anchor axial force situation of change, and it has the advantages that, and monitoring accuracy is high, easy to use, high financial profit.
Description
Technical field
The utility model is related to tunnels and underground engineering field, more particularly to a kind of hollow slip casting anchor for being easy to monitor axle power
Bar.
Background technology
At present, traditional anchor pole is typically made up of anchor bar body, stop grouting plug, drill bit, is commonly used in anchor axial force monitoring process
Type vibration wire reinforcing bar axle power meter and adhering resistance strain sheets two ways.Wherein, needed using the timing of type vibration wire reinforcing bar axle power by original
There is anchor pole to block, axle power meter is welded in the middle of original anchor pole, because axle power meter material therefor and steel used in anchor pole are difficult complete
Unanimously, therefore its axle power for being surveyed and the axle power of non-native anchor pole, its axle power value is very limited to the directive significance of engineering construction；
And when utilizing adhering resistance strain sheets mode, anchor pole creeps into Rock And Soil in work progress, anchor bar body surface occurs with Rock And Soil
Severe friction, causes resistance strain gage survival rate very low.It can be said that there is many disadvantages in existing anchor axial force monitoring means
End, equipment poor operability surveys that axle power value error is larger, and the further hair of tunnels and underground engineering technology has seriously been govern
Exhibition.Therefore, need badly and transformation is optimized to traditional anchor pole and its monitoring method.
Utility model content
For weak point present in conventional anchor monitoring axle power process, the purpose of this utility model is to provide a kind of
It is easy to monitor the hollow grouting anchor of axle power, using hollow grouting anchor, runs through inside hollow grouting anchor provided with axial slip casting
Distribution type fiber-optic, is bonded as one by central through hole using the epoxide-resin glue in axial slip casting central through hole with anchor bar body, is led to
Monitoring distributive fiber optic strain value is crossed to accurately reflect anchor axial force situation of change, it has, and monitoring accuracy is high, simple in construction, make
The advantages of with convenience, relatively low cost, high financial profit.
The purpose of this utility model is achieved through the following technical solutions：
A kind of hollow grouting anchor for being easy to monitor axle power, including cannulated threaded anchor bar body, nut, backing plate, stop grouting plug, brill
Run through along its length provided with axial slip casting inside head, distribution type fiber-optic and epoxide-resin glue, the cannulated threaded anchor bar body
Being provided with heart through hole, the axial slip casting central through hole of the cannulated threaded anchor bar body is used to monitor hollow grouting anchor axle power size
Distribution type fiber-optic；The cannulated threaded anchor bar body head end end is provided with drill bit, and the axial slip casting center of drill bit closing leads to
The stomidium mouthful in hole；The cannulated threaded anchor bar body tail end is provided with stop grouting plug, and the cannulated threaded anchor bar body lateral wall is provided with
External screw thread, the cannulated threaded anchor bar body threads suit is connected with nut, is fitted close between the nut and stop grouting plug
Backing plate is installed；Described distribution type fiber-optic one end end is close to the head end end of cannulated threaded anchor bar body, the distribution type fiber-optic
Axial slip casting central through hole is stretched out in other end end at hollow threaded anchor rod body tail end；The axial direction of the cannulated threaded anchor bar body
It is closed in slip casting central through hole to fill epoxide-resin glue.
In order to which the utility model is better achieved, the drill bit internal has and cannulated threaded anchor bar body head end external screw thread phase
There is the apex point portion of conical by its shape at the top of the internal thread hole of matching thread connection, the drill bit.
Preferably, the nut is close to cannulated threaded anchor bar body tail end side, the stop grouting plug is close to cannulated threaded anchor
Body of rod head end side；The one side that the backing plate is in contact with stop grouting plug be big end surface, the backing plate be in contact with nut one
Face is small end surface, and the backing plate is from big end surface to small end surface arc transition.
The preferred distribution type fiber-optic structure technology scheme of the utility model is as follows：The distribution type fiber-optic includes straining and sensing
Optical cable and tight are in the sheath of straining and sensing optical cable, and the straining and sensing optical cable is used for the axle power for monitoring hollow grouting anchor
Size, polyurethane elastomeric materials protective layer is also packaged between the straining and sensing optical cable and sheath.
In order to prevent epoxide-resin glue from being flowed out at the aperture of the axial slip casting central through hole of hollow threaded anchor rod body tail end,
The cannulated threaded anchor bar body tail end is provided with miniature stop grouting plug, and the miniature axial slip casting central through hole of stop grouting plug closing is close
Stomidium mouthful of cannulated threaded anchor bar body tail end.
Preferably, a diameter of 2mm of the distribution type fiber-optic, weight is 2kg/km.
Preferably, the cannulated threaded anchor bar body is manufactured by Q235 Steel materials, the external diameter of cannulated threaded anchor bar body is
28mm, the axial a diameter of 18mm of slip casting central through hole of cannulated threaded anchor bar body, the stretching resistance of cannulated threaded anchor bar body is not less than
190KN。
Preferably, the epoxide-resin glue is epoxy resin and curing agent in mass ratio 5:1 is uniformly obtained by mixing,
The viscosity of epoxide-resin glue is 900~1300Pas, and the first solid time of epoxide-resin glue is 4~6 hours, and epoxy resin
Glue reached optimal adhesive effect in 24 hours.
The utility model compared with the prior art, with advantages below and beneficial effect：
(1) the utility model is used to run through inside hollow grouting anchor, hollow grouting anchor and led to provided with axial slip casting center
Distribution type fiber-optic, is bonded as one by hole using the epoxide-resin glue in axial slip casting central through hole with anchor bar body, passes through monitoring
Distributive fiber optic strain value is to accurately reflect anchor axial force situation of change, and it has, and monitoring accuracy is high, simple in construction, user
Just, cost is relatively low, high financial profit the advantages of.
(2) cannulated threaded anchor bar body of the present utility model is provided with stop grouting plug, is conducive to controlling the slip casting of epoxide-resin glue
Amount control, miniature stop grouting plug, Ke Yiqi are provided with axial slip casting central through hole at the aperture of cannulated threaded anchor bar body tail end
Overflowed to epoxide-resin glue is prevented at the aperture of the axial slip casting central through hole of hollow threaded anchor rod body tail end.
(3) close installation has backing plate between nut and stop grouting plug of the present utility model, and backing plate causes stop grouting plug airtight performance
More preferably.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein, it is entitled corresponding to the reference in accompanying drawing：
The hollow full-thread bolt bodies of 1-, 2- nuts, 3- backing plates, 4- stop grouting plugs, 5- drill bits, 6- distribution type fiber-optics,
7- epoxide-resin glues, the miniature stop grouting plugs of 8-.
Embodiment
The utility model is described in further detail with reference to embodiment：
Embodiment
As shown in figure 1, a kind of hollow grouting anchor for being easy to monitor axle power, including cannulated threaded anchor bar body 1, nut 2, pad
Run through along its length inside plate 3, stop grouting plug 4, drill bit 5, distribution type fiber-optic 6 and epoxide-resin glue 7, cannulated threaded anchor bar body 1
Provided with axial slip casting central through hole, axial slip casting central through hole is arranged along the axis of cannulated threaded anchor bar body 1, its axial slip casting
Both equal lengths of central through hole and cannulated threaded anchor bar body 1.It is provided with the axial slip casting central through hole of cannulated threaded anchor bar body 1
Distribution type fiber-optic 6 for monitoring hollow grouting anchor axle power size；The preferred distribution type fiber-optic 6 of the utility model includes strain
Optical cable for sensing and tight are in the sheath of straining and sensing optical cable, and straining and sensing optical cable is used for the axle power for monitoring hollow grouting anchor
Size, is also packaged with polyurethane elastomeric materials protective layer between straining and sensing optical cable and sheath.The distribution that the present embodiment is selected
A diameter of 2mm of optical fiber 6, weight is 2kg/km.
As shown in figure 1, the right-hand member of cannulated threaded anchor bar body 1 is the head end of cannulated threaded anchor bar body 1, cannulated threaded anchor bar body 1
Left end be cannulated threaded anchor bar body 1 tail end.The head end end of cannulated threaded anchor bar body 1 is provided with drill bit 5, the closing axle of drill bit 5
To stomidium mouthful of slip casting central through hole, i.e., drill bit 5 closes axial slip casting central through hole right-hand member aperture.Cannulated threaded anchor bar body 1
Tail end is provided with stop grouting plug 4, and the overall lateral wall of cannulated threaded anchor bar body 1 is provided with external screw thread, the threads of cannulated threaded anchor bar body 1
Suit is connected with nut 2, is fitted close between nut 2 and stop grouting plug 4 and is provided with backing plate 3, and backing plate 3 allows the airtight performance of stop grouting plug 4
More preferably.One end end of distribution type fiber-optic 6 close to the head end end of cannulated threaded anchor bar body 1, the other end end of distribution type fiber-optic 6 from
Axial slip casting central through hole, the other end end connection monitoring display of distribution type fiber-optic 6 are stretched out at the tail end of cannulated threaded anchor bar body 1
Device, the anchor axial force size that distribution type fiber-optic 6 is monitored is timely fed back to be shown on monitor display.Cannulated threaded
It is closed in the axial slip casting central through hole of anchor bar body 1 to fill epoxide-resin glue 7, epoxide-resin glue 7 by distribution type fiber-optic 6 with it is hollow
The axial slip casting central through hole madial wall of the threaded anchor body of rod 1 is closely bonded together.
It is engaged as shown in figure 1, the inside of drill bit 5 has with the head end external screw thread of cannulated threaded anchor bar body 1 in threaded connection
Screwed hole, the internal thread hole of drill bit 5 is connected with the head end end thread of cannulated threaded anchor bar body 1, and drill bit 5, which is played, is easy to cannulated threaded
Anchor bar body 1 inserts relevant range, and drill bit 5 also acts as the effect of the axial slip casting central through hole head end aperture of closing.The top of drill bit 5 has
Have the apex point portion of conical by its shape, by apex point portion can smoothly, be quickly inserted relevant range.
Nut 2 is close to the tail end side of cannulated threaded anchor bar body 1, and stop grouting plug 4 is close to the head end side of cannulated threaded anchor bar body 1；
As shown in figure 1, the one side that is in contact with stop grouting plug 4 of backing plate 3 is big end surface, big end surface can preferably with the end of stop grouting plug 4
Face contact, the one side that backing plate 3 is in contact with nut 2 be small end surface, small end surface can preferably with the end contact of nut 2,
Backing plate 3 is from big end surface to small end surface arc transition.
As shown in figure 1, the tail end of cannulated threaded anchor bar body 1 is provided with miniature stop grouting plug 8, miniature stop grouting plug 8 closes axial note
The stomidium mouthful of central through hole close to the tail end of cannulated threaded anchor bar body 1 is starched, miniature stop grouting plug 8, which can be played, prevents epoxide-resin glue
7 flow out at the aperture of the axial slip casting central through hole of the hollow tail end of threaded anchor rod body 1.
The cannulated threaded anchor bar body 1 that the present embodiment is used is manufactured by Q235 Steel materials, the external diameter of cannulated threaded anchor bar body 1
For 28mm, the axial a diameter of 18mm of slip casting central through hole of cannulated threaded anchor bar body 1, the stretching resistance of cannulated threaded anchor bar body 1 is not
Less than 190KN.
The epoxide-resin glue 7 that the present embodiment is used is epoxy resin and curing agent in mass ratio 5:1 is uniformly mixed
And obtain, the viscosity of epoxide-resin glue 7 is 900~1300Pas, and the first solid time of epoxide-resin glue 7 is 4~6 hours, and ring
Oxygen resin glue 7 reached optimal adhesive effect in 24 hours.
In the utility model, hollow full-thread bolt body 1 uses Q235 steel, and its axial slip casting central through hole is a diameter of
18mm, for conventional anchor, it greatly reduces rolled steel dosage on the basis of rigidity is kept, and expands axial slip casting center
The diameter of through hole, is easy to slip casting and lays distribution type fiber-optic 6；Secondly, by the axial slip casting of hollow full-thread bolt body 1
Heart through hole injects epoxide-resin glue 7, not only increases the rigidity of hollow full-thread bolt body 1, and by distribution type fiber-optic 6 with
Empty full-thread bolt body 1 is bonded as one, and realizes by monitoring distribution type fiber-optic 6 to reflect anchor axial force situation；Finally, by
It is that the principle that the linear relationship between Brillouin scattering frequency drift amount is strained using its axle power is carried out in distribution type fiber-optic 7
Monitoring, it has, and monitoring accuracy is high, the advantage of strong applicability, greatly improves the monitoring accuracy of anchor axial force and operable
Property.
Above-mentioned embodiment is a preferred embodiment of the present utility model, is not of the present utility model for limiting
Implement with interest field, equivalence changes that all contents according to described in present utility model application scope of patent protection are made and near
Like replacing, it all should fall in protection domain of the present utility model.
Claims (8)
1. a kind of hollow grouting anchor for being easy to monitor axle power, it is characterised in that：Including cannulated threaded anchor bar body（1）, nut
（2）, backing plate（3）, stop grouting plug（4）, drill bit（5）, distribution type fiber-optic（6）And epoxide-resin glue（7）, the cannulated threaded anchor bar body
（1）It is internal to run through along its length provided with axial slip casting central through hole, the cannulated threaded anchor bar body（1）Axial slip casting center
The distribution type fiber-optic for being used for monitoring hollow grouting anchor axle power size is provided with through hole（6）；The cannulated threaded anchor bar body（1）Head
End end is provided with drill bit（5）, the drill bit（5）Stomidium mouthful of the axial slip casting central through hole of closing；The cannulated threaded anchor
The body of rod（1）Tail end is provided with stop grouting plug（4）, the cannulated threaded anchor bar body（1）Lateral wall is provided with external screw thread, the cannulated threaded
Anchor bar body（1）Threads suit is connected with nut（2）, the nut（2）With stop grouting plug（4）Between be fitted close pad is installed
Plate（3）；The distribution type fiber-optic（6）One end end is close to cannulated threaded anchor bar body（1）Head end end, the distribution type fiber-optic
（6）Other end end is from hollow threaded anchor rod body（1）Axial slip casting central through hole is stretched out at tail end；The cannulated threaded anchor bar body
（1）Axial slip casting central through hole in closed fill epoxide-resin glue（7）.
2. the hollow grouting anchor of axle power is monitored according to being easy to described in claim 1, it is characterised in that：The drill bit（5）It is interior
Portion has and cannulated threaded anchor bar body（1）Head end external screw thread is engaged the internal thread hole of threaded connection, the drill bit（5）Top has
There is the apex point portion of conical by its shape.
3. the hollow grouting anchor of axle power is monitored according to being easy to described in claim 1, it is characterised in that：The nut（2）Lean on
Nearly cannulated threaded anchor bar body（1）Tail end side, the stop grouting plug（4）Close to cannulated threaded anchor bar body（1）Head end side；The pad
Plate（3）With stop grouting plug（4）The one side being in contact is big end surface, the backing plate（3）With nut（2）The one side being in contact is microcephaly
End face, the backing plate（3）From big end surface to small end surface arc transition.
4. the hollow grouting anchor of axle power is monitored according to being easy to described in claim 1, it is characterised in that：The distribution type fiber-optic
（6）Including straining and sensing optical cable and tight in the sheath of straining and sensing optical cable, the straining and sensing optical cable is used in monitoring
The axle power size of empty grouted anchor bar, polyurethane elastomeric materials protective layer is also packaged between the straining and sensing optical cable and sheath.
5. the hollow grouting anchor of axle power is monitored according to being easy to described in claim 1 or 2 or 3, it is characterised in that：It is described hollow
The threaded anchor body of rod（1）Tail end is provided with miniature stop grouting plug（8）, the miniature stop grouting plug（8）The axial slip casting central through hole of closing is leaned on
Nearly cannulated threaded anchor bar body（1）Stomidium mouthful of tail end.
6. the hollow grouting anchor of axle power is monitored according to being easy to described in claim 1 or 4, it is characterised in that：The distribution
Optical fiber（6）A diameter of 2mm, weight is 2kg/km.
7. the hollow grouting anchor of axle power is monitored according to being easy to described in claim 1, it is characterised in that：The cannulated threaded anchor
The body of rod（1）Manufactured by Q235 Steel materials, cannulated threaded anchor bar body（1）External diameter be 28mm, cannulated threaded anchor bar body（1）Axial direction
The a diameter of 18mm of slip casting central through hole, cannulated threaded anchor bar body（1）Stretching resistance be not less than 190KN.
8. the hollow grouting anchor of axle power is monitored according to being easy to described in claim 1, it is characterised in that：The epoxide-resin glue
（7）For epoxy resin and curing agent in mass ratio 5:1 is uniformly obtained by mixing, epoxide-resin glue（7）Viscosity for 900~
1300Pa s, epoxide-resin glue（7）The first solid time be 4~6 hours, and epoxide-resin glue（7）Reached most in 24 hours
Good adhesive effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720053515.7U CN206545517U (en) | 2017-01-17 | 2017-01-17 | It is easy to monitor the hollow grouting anchor of axle power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720053515.7U CN206545517U (en) | 2017-01-17 | 2017-01-17 | It is easy to monitor the hollow grouting anchor of axle power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206545517U true CN206545517U (en) | 2017-10-10 |
Family
ID=59993593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720053515.7U Expired - Fee Related CN206545517U (en) | 2017-01-17 | 2017-01-17 | It is easy to monitor the hollow grouting anchor of axle power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206545517U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111236995A (en) * | 2020-01-14 | 2020-06-05 | 东南大学 | Hollow basalt fiber anchor rod system based on FBG technology and construction method |
-
2017
- 2017-01-17 CN CN201720053515.7U patent/CN206545517U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111236995A (en) * | 2020-01-14 | 2020-06-05 | 东南大学 | Hollow basalt fiber anchor rod system based on FBG technology and construction method |
| CN111236995B (en) * | 2020-01-14 | 2021-08-24 | 东南大学 | Hollow basalt fiber anchor rod system based on FBG technology and construction method |
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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 |
Granted publication date: 20171010 Termination date: 20190117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |