CN204827501U - High precision fiber optic grating cavity of excelling in dynamometry stock - Google Patents
High precision fiber optic grating cavity of excelling in dynamometry stock Download PDFInfo
- Publication number
- CN204827501U CN204827501U CN201520324990.4U CN201520324990U CN204827501U CN 204827501 U CN204827501 U CN 204827501U CN 201520324990 U CN201520324990 U CN 201520324990U CN 204827501 U CN204827501 U CN 204827501U
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- fiber grating
- stock
- optical fiber
- rod body
- slip casting
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Abstract
The utility model provides a high precision fiber optic grating cavity of excelling in dynamometry stock, fields such as mainly used tunnel, tunnel, foundation ditch, side slope and underground works anchor and monitoring. Including the stock body of rod, slip casting pipe, fiber grating array, fiber grating protection tube, reinforcement nut, gasket, the stock body of rod has along axial circular through -hole, arranges a slip casting pipe and a fiber grating protection tube in the circular through -hole, buries the fiber grating array in the fiber grating protection tube underground, and the fiber grating array is concatenated by a plurality of fiber grating and forms. The utility model discloses simple structure, simple to operate enables the slip casting thick liquid and therefrom gets rid of the bubble totally the stock body of rod and the closely knit combination of pore wall after the assurance slip casting, its anchoring effect of increase that can be obvious to drill way get pulp in the inside warp drilling bottom of the spare anchor pole body of rod, utilize fiber grating to carry out the dynamometry to the slip casting stock, the precision is high, the reliability is high, the interference killing feature is strong, is particularly suitable for the stock engineering and monitors for a long time.
Description
Technical field
The utility model relates to a kind of high-strength high precision optical fiber grating hollow force-measuring anchor stock, especially a kind of for colliery surrounding rock consolidation and monitoring anchor pole, is applicable to tunnel, tunnel, foundation ditch, side slope and underground construction and strengthens the engineering field such as anchoring and monitoring.
Background technology
For a long time, in tunnel, tunnel, foundation ditch, side slope and underground construction strengthen the engineering field such as anchoring and monitoring, and the bolt support generally adopted, the quantity of all kinds of anchor pole is also in proportional increase.The simplest in crowd's eurypalynous hollow bolt number seamless steel pipe processing technology.
Under existing technical condition, general anchor pole adopts the technological measure of inserted link or first inserted link grouting behind shaft or drift lining after first slip casting, and these two kinds of techniques are good to geological conditions, and supporting is less demanding is feasible.But in roof cracking, supporting length length, supporting intensity high situation, its workmanship is difficult to ensure, does not reach the anchoring effect of expection, leaves potential safety hazard to engineering.
The accident casualty number caused in many engineering fields, particularly coal mine roof plate, country rock disaster remains high, and becomes the key factor affecting Safety of Coal Mine Production, serious threat mine operation safety.As the pressure from surrounding rock monitoring of one of the important leverage means of mine safety production more and more by the attention of people, also more and more higher to the accuracy requirement of monitoring mining.
Fiber grating, as a kind of novel research field, has been widely used on sensing technology now.Fiber grating sensing technology is compared traditional sensing technology, and fiber-optic grating sensor has electromagnetism interference, anticorrosive, the advantage such as electric insulation, high sensitivity.Therefore the fields such as oil, ground, colliery that are applied to by fiber grating sensing technology become trend.
Summary of the invention
The purpose of this utility model is, overcome the defect of existing anchor pole not easily fully slip casting, and a kind of hollow bolt of high strength of new structure is provided, provide simultaneously a kind of structure simple, be sensing media with anchor pole, accurately measure rockbolt stress situation in conjunction with fiber grating.
For achieving the above object, the utility model provides a kind of high-strength high-precision hollow force-measuring anchor stock, comprises anchor rod body, Grouting Pipe, optical fiber optical grating array, optical fiber grating protecting pipe, reinforces nut, pad.It is characterized in that: described anchor rod body has manhole vertically; a Grouting Pipe and an optical fiber grating protecting pipe is arranged in described manhole; bury optical fiber optical grating array underground in optical fiber grating protecting pipe, optical fiber optical grating array is connected in series by multiple fiber grating and forms.Described anchor rod body diameter is at 20-28mm, and length is at 1800-2400mm; Described manhole diameter is 14mm-22mm; The length of described Grouting Pipe is longer than anchor rod body, and the top of Grouting Pipe is higher than the top of anchor rod body, and the afterbody of Grouting Pipe exposes to anchor rod body; The length of described optical fiber grating protecting pipe is longer than anchor rod body, and the top of optical fiber grating protecting pipe flushes with the top of anchor rod body, and the afterbody of optical fiber grating protecting pipe exposes to anchor rod body.
beneficial effect
The utility model has the following advantages compared with conventional anchor:
1, slip casting returns slurry from foot of hole toward aperture through hollow bolt, and air is got rid of clean, is with pressure grouting can ensure slurries weak geologic body diffusion around drill hole wall simultaneously, thus plays the effect of reinforcing.After slip casting, anchor rod body calculus is closely knit, and the body of rod fully contacts with hole wall.At identical conditions, the utility model is adopted to have better anchoring effect;
2, structure is simple, simple installation, and the fiber grating in hollow bolt can be implemented accurately, dynamically, continuously monitor rockbolt stress situation; In the specific implementation, utilize optical fiber grating protecting pipe box on fiber grating, protect fiber grating in anchor pole cylinder and be not subject to construction infection;
3, fiber-optic grating sensor adopts non-active operation, and adopt optical fiber to carry out optical signal transmission, reliability is high, long distance of signal transmission, and using optical signal as information carrier, not by the impact of job site adverse circumstances, antijamming capability is strong.
Accompanying drawing explanation
Fig. 1 is the utility model high strength optical fiber grating hollow bolt structural representation;
Fig. 2 is the utility model high strength optical fiber grating hollow bolt sectional view;
Fig. 3 is the utility model high strength optical fiber grating hollow bolt scheme of installation;
Number in the figure: 1-hollow bolt, 2-Grouting Pipe, 3-fiber grating, 4-optical fiber grating protecting pipe, 5-reinforces nut, 6-pad.
Detailed description of the invention
For further setting forth the utility model for the technological means that reaches predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and better enforcement example, be described as follows according to high strength optical fiber grating dynamometry its detailed description of the invention of hollow bolt that the utility model proposes and effect thereof.
Refer to shown in Fig. 1, the hollow bolt body of rod that the utility model provides, the circular hole in the middle of anchor pole sets up a Grouting Pipe and a fiber grating.Higher than the end of anchor rod body on the end position wherein inserting the Grouting Pipe of hollow bolt circular hole, one end that Grouting Pipe is exposed at outside anchor pole circular hole will exceed anchor rod body, to access grouting pump.
Refer to shown in Fig. 1, the hollow bolt body of rod that the utility model provides, the circular hole in the middle of anchor pole sets up a Grouting Pipe and a fiber grating.The end position wherein inserting the fiber grating of hollow bolt circular hole is concordant with the end of anchor rod body, and one end that fiber grating is exposed at outside anchor pole circular hole will exceed anchor rod body, to access (FBG) demodulator;
During use, as shown in Figure 3, a boring is pierced in roadway surrounding rock 9, device is inserted in boring, inject cement mortar from Grouting Pipe, make it be fixed in roadway surrounding rock, fibre-optical splice is drawn from hollow bolt round mouth, then put into pallet at the exposed junction of anchor pole successively, pad, finally use nut screwing clamping.
Claims (5)
1. a high-strength high precision optical fiber grating hollow force-measuring anchor stock, comprise anchor rod body (1), Grouting Pipe (2), optical fiber optical grating array (3), optical fiber grating protecting pipe (4), reinforce nut (5), pad (6), it is characterized in that: described anchor rod body (1) has manhole (7) vertically, a Grouting Pipe (2) and an optical fiber grating protecting pipe (4) is arranged in described manhole (7), optical fiber optical grating array (3) is buried underground in optical fiber grating protecting pipe (4), optical fiber optical grating array (3) is connected in series by multiple fiber grating (8) and forms.
2. one according to claim 1 high-strength high precision optical fiber grating hollow force-measuring anchor stock, is characterized in that: described anchor rod body (1) diameter is at 20-28mm, and length is at 1800-2400mm.
3. one according to claim 1 high-strength high precision optical fiber grating hollow force-measuring anchor stock, is characterized in that: described manhole (7) diameter is 14mm-22mm.
4. one according to claim 1 high-strength high precision optical fiber grating hollow force-measuring anchor stock, it is characterized in that: the length of described Grouting Pipe (2) is longer than anchor rod body (1), the top of Grouting Pipe (2) is higher than the top of anchor rod body (1), and the afterbody of Grouting Pipe (2) exposes to anchor rod body (1).
5. one according to claim 1 high-strength high precision optical fiber grating hollow force-measuring anchor stock; it is characterized in that: the length of described optical fiber grating protecting pipe (4) is longer than anchor rod body (1); the top of optical fiber grating protecting pipe (4) flushes with the top of anchor rod body (1), and the afterbody of optical fiber grating protecting pipe (4) exposes to anchor rod body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520324990.4U CN204827501U (en) | 2015-05-20 | 2015-05-20 | High precision fiber optic grating cavity of excelling in dynamometry stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520324990.4U CN204827501U (en) | 2015-05-20 | 2015-05-20 | High precision fiber optic grating cavity of excelling in dynamometry stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204827501U true CN204827501U (en) | 2015-12-02 |
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ID=54685112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520324990.4U Expired - Fee Related CN204827501U (en) | 2015-05-20 | 2015-05-20 | High precision fiber optic grating cavity of excelling in dynamometry stock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204827501U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141265A (en) * | 2018-07-12 | 2019-01-04 | 中国水利水电科学研究院 | A kind of advanced monitoring device of tunnel excavation country rock overall process deformation curve and its implementation method |
| CN109253691A (en) * | 2018-10-22 | 2019-01-22 | 长沙理工大学 | A kind of Monitoring of Slope Deformation and prior-warning device |
| CN109763850A (en) * | 2019-01-15 | 2019-05-17 | 泰安铭源节能科技有限公司 | A kind of intelligent grouting cable anchor and its detection method |
| CN113622420A (en) * | 2021-07-26 | 2021-11-09 | 中国地质调查局武汉地质调查中心 | Bank side slope basalt fiber rib integrated anchoring structure and monitoring system thereof |
| CN114606938A (en) * | 2022-02-27 | 2022-06-10 | 桂林电子科技大学 | Optical fiber intelligent anchor rod capable of detecting three-dimensional shape change |
-
2015
- 2015-05-20 CN CN201520324990.4U patent/CN204827501U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141265A (en) * | 2018-07-12 | 2019-01-04 | 中国水利水电科学研究院 | A kind of advanced monitoring device of tunnel excavation country rock overall process deformation curve and its implementation method |
| CN109141265B (en) * | 2018-07-12 | 2019-09-06 | 中国水利水电科学研究院 | A kind of advanced monitoring device of tunnel excavation country rock overall process deformation curve and its implementation method |
| CN109253691A (en) * | 2018-10-22 | 2019-01-22 | 长沙理工大学 | A kind of Monitoring of Slope Deformation and prior-warning device |
| CN109763850A (en) * | 2019-01-15 | 2019-05-17 | 泰安铭源节能科技有限公司 | A kind of intelligent grouting cable anchor and its detection method |
| CN113622420A (en) * | 2021-07-26 | 2021-11-09 | 中国地质调查局武汉地质调查中心 | Bank side slope basalt fiber rib integrated anchoring structure and monitoring system thereof |
| CN114606938A (en) * | 2022-02-27 | 2022-06-10 | 桂林电子科技大学 | Optical fiber intelligent anchor rod capable of detecting three-dimensional shape change |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20151202 Termination date: 20160520 |