CN111074955B - Basalt fiber intelligent anchor rod detection system - Google Patents
Basalt fiber intelligent anchor rod detection system Download PDFInfo
- Publication number
- CN111074955B CN111074955B CN202010032122.4A CN202010032122A CN111074955B CN 111074955 B CN111074955 B CN 111074955B CN 202010032122 A CN202010032122 A CN 202010032122A CN 111074955 B CN111074955 B CN 111074955B
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- Prior art keywords
- anchor
- anchor rod
- ring
- grating
- contact ring
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- 229920002748 Basalt fiber Polymers 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 27
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 4
- 238000009941 weaving Methods 0.000 claims 1
- 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
- 238000009413 insulation Methods 0.000 abstract 1
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
- Piles And Underground Anchors (AREA)
Abstract
本发明公开了一种玄武岩纤维智能锚杆检测系统，包括锚杆，锚杆外部嵌套有锚杆接触环，锚杆内部设有金属刻丝，所述金属刻丝的一端与锚杆接触环连接，另一端与失稳预警系统连接；所述锚杆外部设有锚环，锚环内侧与锚杆接触环相对应的位置设有锚环接触环，所述的锚环接触环与失稳预警系统连接，所述的锚杆内部设有光栅，所述的光栅与光栅检测系统连接。本发明能够降低锚杆运营阶段维护难度，提高运营阶段锚杆检测效率；采用布拉格光栅替代应变片，用以检测锚杆系统的应力状态，相较于应变片，光栅寿命较长，可以在锚杆运营阶段通过预留端口，进行长期监测；本发明的锚杆和锚环均采用玄武岩纤维制成，能够很好地与光栅及金属刻丝编织，且具有绝缘性。
The invention discloses a basalt fiber intelligent bolt detection system, comprising a bolt, a bolt contact ring is nested outside the bolt, a metal engraving wire is arranged inside the bolt, and one end of the metal engraving wire is connected with the bolt contact ring, The other end is connected with the instability early warning system; an anchor ring is provided outside the anchor rod, and an anchor ring contact ring is provided on the inner side of the anchor ring at a position corresponding to the anchor rod contact ring, and the anchor ring contact ring is connected to the instability early warning system The anchor rod is internally provided with a grating, and the grating is connected with the grating detection system. The invention can reduce the maintenance difficulty in the operation stage of the anchor rod and improve the detection efficiency of the anchor rod in the operation stage; the Bragg grating is used to replace the strain gauge to detect the stress state of the anchor rod system. During the operation stage of the rod, long-term monitoring is carried out by reserving ports; the anchor rod and the anchor ring of the present invention are made of basalt fiber, which can be well woven with grating and metal engraving wire, and has insulation.
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 warning system 2 through the anchor rod outgoing line 9. 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 (4)
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 CN111074955A (en) | 2020-04-28 |
| CN111074955B true CN111074955B (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010032122.4A Active CN111074955B (en) | 2020-01-13 | 2020-01-13 | Basalt fiber intelligent anchor rod detection system |
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Citations (5)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206570699U (en) * | 2017-03-05 | 2017-10-20 | 郑州大学 | A kind of suspension cable structure with warning function |
-
2020
- 2020-01-13 CN CN202010032122.4A patent/CN111074955B/en active Active
Patent Citations (5)
| 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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN111074955A (en) | 2020-04-28 |
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