CN201753600U - Optical fiber monitoring device for mine shaft deformation - Google Patents
Optical fiber monitoring device for mine shaft deformation Download PDFInfo
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- CN201753600U CN201753600U CN2010202314975U CN201020231497U CN201753600U CN 201753600 U CN201753600 U CN 201753600U CN 2010202314975 U CN2010202314975 U CN 2010202314975U CN 201020231497 U CN201020231497 U CN 201020231497U CN 201753600 U CN201753600 U CN 201753600U
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- optical fiber
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- deformation
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- shaft
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Abstract
An optical fiber monitoring device for mine shaft deformation belongs to the technical field of detection equipment and is used for automatic real-time high-precision remote monitoring of deformation of mine shafts. The technical scheme includes that the optical fiber monitoring device consists of a sensor portion, transmission optical fibers and a fiber bragg grating demodulator, the sensor portion is mounted in a plurality of drilled holes of a mine shaft when in ground drilling, grouting and reinforcing, and two ends of the transmission optical fibers are respectively connected with the sensor portion and the fiber bragg grating demodulator. The optical fiber monitoring device has the advantages that when in projection of deformed shafts, deformation and failure mechanisms and stress environments of different shafts are different greatly; and when the best opportunity for mounting sensors on shaft walls is missed particularly after shaft construction is finished and hanging scaffolds are removed already, BOTDR distributed optical fiber sensors can be embedded in drilled holes by aid of anchor cable drilling engineering, so that the optical fiber monitoring device can monitor deformation of shaft wall rocks and realize safety monitoring and risk predication.
Description
Technical field
The utility model relates to a kind of device of monitoring the vertical shaft for mine distortion, belongs to the detecting instrument equipment technical field.
Background technology
Work shaft is the vertical mine structure from the downward deepening in the face of land, carries out tunneling construction and surrounding rock supporting in construction period by hanging scaffold.In case vertical shaft comes into operation, personnel are difficult to direct close contact and implement deformation monitoring.Monitoring technology such as not only traditional convergent deformation monitoring, laser range finder are difficult to carry out measurement, and the shaft structure environment is abominable, and traditional sensor also is difficult to adapt to condition of work.In case destroyed being difficult to of sensor recovers.This shows.The work shaft deformation monitoring is a very difficult and arduous research work.
Summary of the invention
Problem to be solved in the utility model provides a kind of can the distortion vertical shaft for mine carry out vertical shaft for mine distortion fiber-optic monitoring device real-time, remote, the automatic, high precision monitoring.
The technical scheme that solves the problems of the technologies described above is:
A kind of vertical shaft for mine distortion fiber-optic monitoring device, it is made up of transducing part, Transmission Fibers and fiber Bragg grating (FBG) demodulator, in a plurality of borings when transducing part is installed in vertical shaft for mine from ground punching consolidation by grouting, the Transmission Fibers two ends are connected with fiber Bragg grating (FBG) demodulator with transducing part respectively.
Above-mentioned vertical shaft for mine distortion fiber-optic monitoring device, transducing part is to arrange two single mode strain optical fiber and a triumphant pull-type optical fiber respectively in each boring.
Usefulness of the present utility model is: in the work shaft of disaster that deforms, not only monitoring of environmental is abominable, execution conditions difficulty, the deformation failure mechanism of each vertical shaft and be subjected to force environment to have very big-difference.Particularly working as vertical shaft completes, hanging scaffold is removed, when having lost the best opportunity of borehole wall sensor installation, the utility model can be by means of the anchor cable borehole engineering, in boring, bury the BOTDR distributed fiberoptic sensor underground, monitor the distortion of vertical shaft country rock thus, realize safety monitoring and risk profile vertical shaft.
Description of drawings
Fig. 1 is a block diagram of the present utility model.
Mark is as follows among the figure: fiber Bragg grating (FBG) demodulator 1, Transmission Fibers 2, transducing part 3.
The specific embodiment
The utility model is applicable to that under the situation that being out of shape has appearred in vertical shaft when pit shaft being reinforced maintenance, the optical fiber that can take well country rock anchor cable to reinforce boring is buried underground and deformation monitoring, to improve the stability of vertical shaft.At this moment general employing is laid from the face of land to boring slip casting and anchor cable at the vertical shaft country rock and is carried out the surrounding rock consolidation processing, by means of the anchor cable borehole engineering, in boring, buried the BOTDR distributed fiberoptic sensor underground, monitored the distortion of ventilating shaft country rock thus, realized safety monitoring and risk profile vertical shaft.
Distribution type fiber-optic and point type grating technology are advanced light sensing technology, and main difference is the end-probing device.Distributed employing continous way optical fiber, and Fiber Bragg Grating technology adopts point sensor.Detection optical fiber and grating sensor are installed tested structure surface, just can make monitoring system perception and process information, and execution result, automated response is made in stimulation to environment, make off-line, static state, passive detection become online, dynamic, real-time, early warning, active monitoring and control, realize strengthening structural safety, alleviate quality, cut down the consumption of energy, improve target such as structural performance.Because the optical fiber footpath is thin, pliable and tough, light weight, has good compliance, superhigh precision and sensitivity in conjunction with grating sensor, can integrate information transmission and sensing, be convenient to realize the repeated use of distributed sensing or multi-point sensing device, broadband and high data transmission rate, even at high wind, deep-etching, high-intensity magnetic field, have under the adverse circumstances such as damp, also can carry out pinpoint accuracy, high-speed and safe good characteristics such as remote detection, become the information transmission and sensing carrier---optical fiber intelligent structure of intelligence structure first-selection.
Adopt optical fiber sensing technology to carry out the malformation monitoring and have following advantage:
(1) be not subjected to the interference of electromagnetic field, electrical insulating property is good, adverse circumstances such as humidity resistance to chemical attack;
(2) light weight, volume is little, and is little to structure influence, is easy to arrange;
(3) realize distributed measurement, monitoring surface is comprehensive;
(4) Jian Ce amount is a wavelength information, therefore is not subjected to the influence of splicing loss, optical path loss factor, and is insensitive to environmental disturbances;
(5) signal attenuation is little on the unit length, can realize long apart from Centralized Monitoring;
(6) highly sensitive, the precision height;
(7) long service life.
According to the situation of stabilization works, the distribution type fiber-optic monitoring scheme is as follows:
1, according to the drilled grout hole design, in boring distribution type fiber-optic has been installed respectively, hole inner fiber length is decided according to the slip casting hole depth, arranges two single mode strain optical fiber and a triumphant pull-type optical fiber in each hole respectively.
2, because the job site circumstance complication has been installed optical fiber respectively in each boring.Install to finish in boring, in surface deployment main cable Transmission Fibers 2 has been introduced the control room, be connected with fiber Bragg grating (FBG) demodulator 1, finally formed the vertical shaft surrouding rock deformation monitoring system of being out of shape.
3, test after monitoring network forms, the result shows the duty of the longest and monitoring system of the effective length of the inner fiber of holing.
4, from the distortion situation of test data display analysis vertical shaft.
The built-in superradiance wideband light source of fiber Bragg grating (FBG) demodulator is coupled to the field optical fibers grating sensor by bare engine module with light source.Each centre wavelength that the field optical fibers grating sensor is reflected is reflected back ray machine module once more, bare engine module is sent reflected signal into the wavelength detecting unit, by the centre wavelength value of each sensor reflection of FP scanning technique perception, relatively each center sensor wavelength change amount is calculated measurand in the wavelength detecting unit.Fiber Bragg grating (FBG) demodulator is at last with output of measurand numerical value and demonstration.
What an embodiment of the present utility model adopted is fiber grating FBG sensor and AQ8603 fibre strain analyzer.
Claims (2)
1. a vertical shaft for mine is out of shape the fiber-optic monitoring device, it is characterized in that: it is made up of transducing part [3], Transmission Fibers [] and fiber Bragg grating (FBG) demodulator [1], in a plurality of borings when transducing part [3] is installed in vertical shaft for mine from ground punching consolidation by grouting, Transmission Fibers [2] two ends are connected with fiber Bragg grating (FBG) demodulator [1] with transducing part [3] respectively.
2. vertical shaft for mine distortion fiber-optic monitoring device according to claim 1, it is characterized in that: described transducing part [3] is to arrange two single mode strain optical fiber and a triumphant pull-type optical fiber respectively in each boring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202314975U CN201753600U (en) | 2010-06-22 | 2010-06-22 | Optical fiber monitoring device for mine shaft deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202314975U CN201753600U (en) | 2010-06-22 | 2010-06-22 | Optical fiber monitoring device for mine shaft deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201753600U true CN201753600U (en) | 2011-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2010202314975U Expired - Fee Related CN201753600U (en) | 2010-06-22 | 2010-06-22 | Optical fiber monitoring device for mine shaft deformation |
Country Status (1)
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438820A (en) * | 2013-09-05 | 2013-12-11 | 南京大学 | Borehole profile rock and soil mass layered deformation optical fiber measuring method |
| CN103670386A (en) * | 2013-12-11 | 2014-03-26 | 同济大学 | Rock stratum multi-point displacement laser measuring method and device |
| CN103696977A (en) * | 2013-12-26 | 2014-04-02 | 中国矿业大学 | Mining axial fan vibration test system based on optical fiber sensor |
| CN103821507A (en) * | 2014-03-18 | 2014-05-28 | 中国矿业大学 | Method for detecting deformation of shaft wall of vertical shaft through distributed optical fibers |
| CN104020179A (en) * | 2014-06-05 | 2014-09-03 | 河海大学常州校区 | Corrugated pipe grouting compactness detecting device and method based on fiber bragg grating sensing technology |
| CN106017541A (en) * | 2016-07-29 | 2016-10-12 | 中铁第四勘察设计院集团有限公司 | Online monitoring device and method of subway contact net support looseness |
| CN106595837A (en) * | 2015-10-20 | 2017-04-26 | 中兴通讯股份有限公司 | Method and device for processing coherent phase sensitive optical time domain reflectometer |
| CN110455645A (en) * | 2019-08-23 | 2019-11-15 | 上海应用技术大学 | A kind of railway Stone Filled Embankment shear test device and test method |
-
2010
- 2010-06-22 CN CN2010202314975U patent/CN201753600U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438820A (en) * | 2013-09-05 | 2013-12-11 | 南京大学 | Borehole profile rock and soil mass layered deformation optical fiber measuring method |
| CN103670386A (en) * | 2013-12-11 | 2014-03-26 | 同济大学 | Rock stratum multi-point displacement laser measuring method and device |
| CN103696977A (en) * | 2013-12-26 | 2014-04-02 | 中国矿业大学 | Mining axial fan vibration test system based on optical fiber sensor |
| CN103821507A (en) * | 2014-03-18 | 2014-05-28 | 中国矿业大学 | Method for detecting deformation of shaft wall of vertical shaft through distributed optical fibers |
| CN103821507B (en) * | 2014-03-18 | 2016-04-13 | 中国矿业大学 | Shaft wall distortion distribution type fiber-optic detection method |
| CN104020179A (en) * | 2014-06-05 | 2014-09-03 | 河海大学常州校区 | Corrugated pipe grouting compactness detecting device and method based on fiber bragg grating sensing technology |
| CN106595837A (en) * | 2015-10-20 | 2017-04-26 | 中兴通讯股份有限公司 | Method and device for processing coherent phase sensitive optical time domain reflectometer |
| CN106017541A (en) * | 2016-07-29 | 2016-10-12 | 中铁第四勘察设计院集团有限公司 | Online monitoring device and method of subway contact net support looseness |
| CN110455645A (en) * | 2019-08-23 | 2019-11-15 | 上海应用技术大学 | A kind of railway Stone Filled Embankment shear test device and test method |
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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 |
Granted publication date: 20110302 Termination date: 20150622 |
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| EXPY | Termination of patent right or utility model |