CN111074955A - Basalt fiber intelligent anchor rod detection system - Google Patents
Basalt fiber intelligent anchor rod detection system Download PDFInfo
- Publication number
- CN111074955A CN111074955A CN202010032122.4A CN202010032122A CN111074955A CN 111074955 A CN111074955 A CN 111074955A CN 202010032122 A CN202010032122 A CN 202010032122A CN 111074955 A CN111074955 A CN 111074955A
- Authority
- CN
- China
- Prior art keywords
- anchor rod
- anchor
- ring
- grating
- contact ring
- 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.)
- Granted
Links
- 229920002748 Basalt fiber Polymers 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 26
- 238000012423 maintenance Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000004873 anchoring Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
Abstract
The invention discloses a basalt fiber intelligent anchor rod detection system which comprises an anchor rod, wherein an anchor rod contact ring is nested outside the anchor rod, metal cutting wires are arranged inside the anchor rod, one end of each metal cutting wire is connected with the anchor rod contact ring, and the other end of each metal cutting wire is connected with a instability early warning system; the anchor rod outside is equipped with the anchor ring, and the anchor ring inboard is equipped with anchor ring contact ring with the corresponding position of anchor rod contact ring, anchor ring contact ring be connected with unstability early warning system, the anchor rod inside be equipped with the grating, grating and grating detecting system be connected. The anchor rod detection method can reduce the maintenance difficulty of the anchor rod in the operation stage and improve the anchor rod detection efficiency in the operation stage; the Bragg grating is adopted to replace a strain gauge for detecting the stress state of the anchor rod system, compared with the strain gauge, the service life of the Bragg grating is longer, and long-term monitoring can be carried out through a reserved port in the anchor rod operation stage; the anchor rod and the anchor ring are both made of basalt fibers, can be well woven with gratings and metal carved wires, and have insulativity.
Description
Technical Field
The invention relates to an anchor rod detection system, in particular to an intelligent basalt fiber anchor rod detection system.
Background
The basalt fiber anchor rod system is used as a novel anchor rod system, has been approved in a roadway support system of mining engineering due to good durability, and is a common anchoring means. But the basalt fiber stock belongs to brittle material, and the ductility is less, and the stock engineering belongs to concealed engineering, and when the basalt fiber stock was used for slope engineering, tunnel engineering, when the stock system took place unexpected unstability, can't remind personnel to withdraw and intelligent feedback to road administration maintenance department so that in time consolidate the maintenance, and current stock anchor system detection cost is higher, can't satisfy the long-term monitoring demand.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the existing basalt fiber anchor rod, the invention aims to provide the basalt fiber intelligent anchor rod detection system, the detection system can perform instability early warning of an anchor rod system and long-term mechanical characteristic monitoring of the anchor rod system, the maintenance difficulty of the anchor rod in the operation stage is reduced, and the anchor rod detection efficiency in the operation stage is improved.
The technical scheme is as follows: the anti-instability early warning device comprises an anchor rod, wherein an anchor rod contact ring is nested outside the anchor rod, metal carving wires are arranged inside the anchor rod, one end of each metal carving wire is connected with the anchor rod contact ring, and the other end of each metal carving wire is connected with an instability early warning system; the anchor rod outside be equipped with the anchor ring, the anchor ring inboard is equipped with anchor ring contact ring with the corresponding position of anchor rod contact ring, anchor ring contact ring be connected with unstability early warning system.
The anchor rod is internally provided with a grating, and the grating is connected with a grating detection system and used for monitoring the stress state of the anchor rod.
The grating is a Bragg grating.
The end of the anchor rod is provided with an anchor rod leading-out wire, one end of the anchor rod leading-out wire is connected with the metal cutting wire, the other end of the anchor rod leading-out wire is connected with the instability early warning system, the instability early warning system is formed through the built-in metal cutting wire, a path is forecasted, and when the anchor rod is subjected to brittle fracture or the anchor ring is failed instantaneously, the early warning system can give an early warning in time.
The anchor ring contact ring is connected with the instability early warning system through the anchor ring leading-out wire, and the early warning system can give an early warning in time when the anchor ring is in failure.
The anchor rod contact ring and the anchor ring contact ring are metal rings.
The anchor rod and the anchor ring are both made of basalt fibers, can be well woven with gratings and metal carved wires, and have insulativity.
Has the advantages that: the invention has the following advantages:
(1) the anchor rod detection method can reduce the maintenance difficulty of the anchor rod in the operation stage and improve the anchor rod detection efficiency in the operation stage;
(2) the Bragg grating is adopted to replace a strain gauge for detecting the stress state of the anchor rod system, compared with the strain gauge, the service life of the Bragg grating is longer, and long-term monitoring can be carried out through a reserved port in the anchor rod operation stage;
(3) the anchor rod and the anchor ring are both made of basalt fibers, can be well woven with gratings and metal carved wires, and have insulativity.
Drawings
FIG. 1 is a schematic view of the bolt detection system of the present invention;
FIG. 2 is a schematic view of an anchor system of the present invention;
fig. 3 is a schematic view of the anchor rod and anchor system mounting head of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 to 3, the anti-instability early warning device comprises an anchor rod 7, an anchor rod contact ring 3 is nested at a position, close to the end of the anchor rod 7, on the outer side of the anchor rod 7, a metal notch wire 6 is arranged inside the anchor rod 7, the metal notch wire 6 penetrates through the whole anchor rod 7, one end of the metal notch wire is connected with the anchor rod contact ring 3, the other end of the metal notch wire is connected with an anchor rod outgoing line 9 at the end of the anchor rod 7, and the metal notch wire is connected with an external instability early. A prediction passage of the instability early warning system is formed through the metal cutting wires 6 arranged in the anchor rod 7, and when the anchor rod 7 is subjected to brittle fracture, the early warning system can give an early warning in time.
An anchor system is sleeved on the outer side of the anchor rod 7, as shown in fig. 2, the anchor system comprises an anchor ring 8, a clamp 11 is arranged between the anchor ring 8 and the anchor rod 7, an anchor ring contact ring 10 is arranged at a position, corresponding to the anchor rod contact ring 3, on the inner side of the anchor ring 8, and the anchor ring contact ring 10 is ensured to correspond to the anchor rod contact ring 3, so that the instability early warning system is ensured to normally operate, as shown in fig. 3. The anchor ring contact ring 10 is connected with the instability early warning system 2 through the anchor ring lead-out wire 4, a instability early warning system forecasting passage is formed through the metal cutting wire 6 arranged in the anchor rod 7, and when the anchor ring 8 fails, the early warning system can give an early warning in time.
As shown in fig. 1, a grating 5 is arranged inside the anchor rod 7 near the edge thereof, the grating 5 is a bragg grating, the grating 5 penetrates through the entire anchor rod 7, and the end portion thereof is connected with the grating detection system 1. And a built-in Bragg grating is adopted to replace a strain gauge for detecting the stress state of the anchor rod system. Compared with a strain gauge, the grating 5 has long service life and can be monitored for a long time through a reserved port in the anchor rod operation stage.
The anchor rod 7 and the anchor ring 8 are both made of basalt fibers, and the basalt fibers can be well woven with the grating 5 and the metal carved filaments 6 relative to other materials, and have insulating property. Based on the operation monitoring requirements of slope engineering and tunnel engineering, the application method of the basalt fiber intelligent anchor rod detection system is as follows:
the installation mode of the basalt fiber intelligent anchor rod is consistent with that of a common full-length bonding type basalt fiber anchor rod, and installation is carried out through positioning, drilling, hole cleaning, rod inserting, centering, grouting, anchoring, hole sealing, surface treatment and the like. The installation of the full-length binding type basalt fiber anchor rod is different from the installation of a common full-length binding type basalt fiber anchor rod by the following three points:
(1) before the material enters a field, conducting wires at the end part of the anchor rod, an anchor rod contact ring, metal cutting wires, an anchor ring contact ring and the like are respectively subjected to access inspection, so that disconnection is prevented, and whether the optical grating is blocked or not is detected;
(2) corresponding combined access verification is carried out on the anchor ring contact ring and the anchor rod contact ring in the anchoring stage, and the safety of the instability early warning system is ensured;
(3) and a grating detection port is reserved in the surface treatment stage, and the instability early warning system can work normally and stably.
Based on different service environments, the anchor rod design is designed in an earlier stage according to corresponding geological survey data and engineering requirements and is replaced by the corresponding basalt fiber intelligent anchor rod according to an equal strength principle, and the design data of the basalt fiber intelligent anchor rod system comprises detailed data such as anchor rod length, centering support number, anchoring slurry type/proportion and anchoring prestress value. In the operation stage of the anchor bolt support system, the instability early warning system is continuously and stably operated and used for detecting and early warning the sudden instability of the anchor bolt support system. In the operation stage, the grating detection port is regularly utilized to carry out health check on the anchor rod system in the routine maintenance so as to predict the operation life of the anchor rod system.
Claims (7)
1. The basalt fiber intelligent anchor rod detection system comprises an anchor rod (7), and is characterized in that an anchor rod contact ring (3) is nested outside the anchor rod (7), metal cutting wires (6) are arranged inside the anchor rod (7), one end of each metal cutting wire (6) is connected with the anchor rod contact ring (3), and the other end of each metal cutting wire is connected with a instability early warning system (2); stock (7) outside be equipped with anchor ring (8), anchor ring (8) inboard and the corresponding position of stock contact ring (3) are equipped with anchor ring contact ring (10), anchor ring contact ring (10) be connected with unstability early warning system (2).
2. The basalt fiber intelligent anchor rod detection system according to claim 1, wherein a grating (5) is arranged inside the anchor rod (7), and the grating (5) is connected with the grating detection system (1).
3. The basalt fiber intelligent anchor rod detecting system according to claim 2, wherein the grating (5) is a bragg grating.
4. The basalt fiber intelligent anchor rod detection system according to claim 1, wherein an anchor rod outgoing line (9) is arranged at the end of the anchor rod (7), one end of the anchor rod outgoing line (9) is connected with the metal notch wire (6), and the other end of the anchor rod outgoing line is connected with the instability early warning system (2).
5. The basalt fiber intelligent anchor rod detecting system according to claim 1, wherein the anchor ring contact ring (10) is connected with the instability early warning system (2) through an anchor ring outgoing line (4).
6. The basalt fiber intelligent anchor rod detecting system according to claim 1, wherein the anchor rod contact ring (3) and the anchor ring contact ring (10) are both metal rings.
7. The basalt fiber intelligent anchor rod detecting system according to claim 1, wherein the anchor rods (7) and the anchor rings (8) are both made of basalt fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010032122.4A CN111074955B (en) | 2020-01-13 | 2020-01-13 | Basalt fiber intelligent anchor rod detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010032122.4A CN111074955B (en) | 2020-01-13 | 2020-01-13 | Basalt fiber intelligent anchor rod detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111074955A true CN111074955A (en) | 2020-04-28 |
| CN111074955B CN111074955B (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010032122.4A Active CN111074955B (en) | 2020-01-13 | 2020-01-13 | Basalt fiber intelligent anchor rod detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111074955B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2177890A2 (en) * | 2008-10-17 | 2010-04-21 | Sächsisches Textilforschungsinstitut e.V. | Lamella for retrofitting on and monitoring structures and method for its manufacture and application |
| CN102140796A (en) * | 2010-12-24 | 2011-08-03 | 大连理工大学 | Intelligent fiber reinforced plastic (FRP) anchor rod |
| CN105442758A (en) * | 2015-12-29 | 2016-03-30 | 智性科技南通有限公司 | Wide-range FRP (fiber reinforced plastic) embedded steel wire composite optical fiber smart rebar and preparation method thereof |
| CN206570699U (en) * | 2017-03-05 | 2017-10-20 | 郑州大学 | A kind of suspension cable structure with warning function |
| CN206753658U (en) * | 2017-05-12 | 2017-12-15 | 中国矿业大学(北京) | A kind of back unstability grading forewarning system device |
| CN108661683A (en) * | 2018-06-08 | 2018-10-16 | 武汉市市政建设集团有限公司 | Wide range FRP embeds steel wire rope composite fiber intelligent anchor rod and preparation method thereof |
-
2020
- 2020-01-13 CN CN202010032122.4A patent/CN111074955B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2177890A2 (en) * | 2008-10-17 | 2010-04-21 | Sächsisches Textilforschungsinstitut e.V. | Lamella for retrofitting on and monitoring structures and method for its manufacture and application |
| CN102140796A (en) * | 2010-12-24 | 2011-08-03 | 大连理工大学 | Intelligent fiber reinforced plastic (FRP) anchor rod |
| CN105442758A (en) * | 2015-12-29 | 2016-03-30 | 智性科技南通有限公司 | Wide-range FRP (fiber reinforced plastic) embedded steel wire composite optical fiber smart rebar and preparation method thereof |
| CN206570699U (en) * | 2017-03-05 | 2017-10-20 | 郑州大学 | A kind of suspension cable structure with warning function |
| CN206753658U (en) * | 2017-05-12 | 2017-12-15 | 中国矿业大学(北京) | A kind of back unstability grading forewarning system device |
| CN108661683A (en) * | 2018-06-08 | 2018-10-16 | 武汉市市政建设集团有限公司 | Wide range FRP embeds steel wire rope composite fiber intelligent anchor rod and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111074955B (en) | 2022-03-08 |
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