CN107014349A - The fine data measuring system of one hole multi-segment target surface subsidence change - Google Patents
The fine data measuring system of one hole multi-segment target surface subsidence change Download PDFInfo
- Publication number
- CN107014349A CN107014349A CN201710267477.XA CN201710267477A CN107014349A CN 107014349 A CN107014349 A CN 107014349A CN 201710267477 A CN201710267477 A CN 201710267477A CN 107014349 A CN107014349 A CN 107014349A
- Authority
- CN
- China
- Prior art keywords
- coupler
- magnetic field
- field sensors
- optical
- measuring system
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of fine data measuring system of hole multi-segment target surface subsidence change, single longitudinal mode laser is connected with left side one end of the 1st coupler, and the left side one end of the right side two ends of the 1st coupler respectively with the 2nd and the 3rd coupler is connected；Right side one end of 2nd coupler is connected by single-mode fiber with the 1st F P magnetic field sensors；One end is connected by single-mode fiber with the 2nd F P magnetic field sensors on the right side of 3rd coupler；The other end and the 1st optical-electrical converter are connected on the left of 2nd coupler, and the other end and the 2nd optical-electrical converter are connected on the left of the 3rd coupler, and the 1st and the 2nd optical-electrical converter is connected with data acquisition unit respectively；1st hollow gathering magnet, the 2nd F P magnetic field sensors, solid poly- bar magnet, the 1st F P magnetic field sensors and the 1st hollow gathering magnet are successively set in sealed PVC sleeve pipes.The system finely can change in each layer sedimentation of measurement stratum in a wellhole, can be widely applied to Geological Engineering and engineering geologic investigation field.
Description
Technical field
The invention belongs to geological instrument and photoelectric sense technology field, and in particular to mark the ground of layering mark more in a kind of the hole
Settle the fine data measuring system of change.
Background technology
The mankind open in groundwater withdrawal, exploitation petroleum gas, excavation Solid Mineral, high-speed railway, subterranean railway, highway
When digging the engineering soil body, often cause compression, the displacement of earth's crust exterior portion unconsolidated sediment, cause ground elevation to reduce, this phenomenon claims
For surface subsidence.The northeast Song Liao Plains, the North China Plain, Lower Changjiang River region, Weinan Plain of China are that surface subsidence is the tightest
Important place area, therefore in the urgent need to setting up the dynamic monitoring network of national surface subsidence, meanwhile, city underground, high-speed railway, highway are handed over
Logical engineering construction and runtime will also set up the dynamic monitoring network of surface subsidence.
The content of the invention
Be widely used in Geological Engineering and engineering geologic investigation field it is an object of the invention to provide one kind, can be to area
Domain safety, traffic safety provide the fine data measuring system of a hole multi-segment target surface subsidence change of data in time, i.e.,
Being capable of finely each layer sedimentation change of measurement stratum in a wellhole.
Therefore, technical scheme is as follows：
A kind of fine data measuring system of hole multi-segment target surface subsidence change, including single longitudinal mode laser, the
The optical-electrical converter of the couplers of 1- the 3rd, the 1st and the 2nd, the hollow gathering magnet of signal condition and data acquisition unit, the 1st and the 2nd, the 1st and
Left side one end of 2F-P magnetic field sensors, solid gathering magnet and PVC sleeve pipes, the single longitudinal mode laser and the 1st coupler
It is connected, the left side one end of the right side two ends of the 1st coupler respectively with the 2nd and the 3rd coupler is connected；The right side one of 2nd coupler
End is connected by single-mode fiber with 1F-P magnetic field sensors；One end passes through single-mode fiber and 2F-P magnetic on the right side of 3rd coupler
Field sensor is connected；The other end and the 1st optical-electrical converter are connected on the left of 2nd coupler, the other end and the 2nd on the left of the 3rd coupler
Optical-electrical converter is connected, and the 1st and the 2nd optical-electrical converter is connected with data acquisition unit respectively；1st hollow gathering magnet, 2F-P magnetic
Field sensor, solid poly- bar magnet, 1F-P magnetic field sensors and the 1st hollow gathering magnet are successively set in sealed PVC sleeve pipes.
The F-P magnetic field sensors are Fabry-Perot fiber optic interference-type magnetic field sensor, including hollow pipe, single-mode optics
Fine and glassy metal silk, single-mode fiber and the glassy metal silk from two ends be fitted into the hollow pipe in blend compounds fix, single mode
Fabry-Perot (F-P) chamber is constituted between fiber end face and glassy metal silk end face.
Preferably, the glassy metal silk is nickel glassy metal silk.The couplers of 1- the 3rd are 2 × 2 optical fiber couplings
Clutch.
Beneficial effects of the present invention are as follows：
The measuring system of the present invention is taken up an area few, and construction is simple, and measurement is quick, economical, reliable, being capable of essence in a wellhole
Thin each layer sedimentation change of measurement stratum, can be widely applied to Geological Engineering and engineering geologic investigation field.State is set up in the year two thousand twenty
The dynamic monitoring network of family's level surface subsidence is to the big depth such as city underground, high-speed railway, highway communication line of project, subterranean tunnel
In the settlement monitoring of underground engineering, the monitoring system region security, traffic safety can provide data in time over the ground, in Geological Engineering
It is with a wide range of applications with engineering geologic investigation field.
Brief description of the drawings
Fig. 1 is the composition schematic diagram of the fine data measuring system of one embodiment of the invention；
Fig. 2 is the structural representation of F-P magnetic field sensors in Fig. 1；
Fig. 3 is the schematic diagram calculation of the fine data measuring system of the present invention.
Embodiment
Layering mark is that the elevation on different buried depth stratum is led into a kind of special system that ground is observed, by with basement rock
(fixed point) elevation translocation is marked, the sedimentation change numerical value of all kinds of soil layers is can obtain.The present invention can finely be measured in a wellhole
The drop change on each stratum.
Fine data is changed to the hole multi-segment target surface subsidence of the present invention with specific embodiment below in conjunction with the accompanying drawings
The composition of measuring system is described in detail.
Layering in view of use is designated as magnetic header, and is embedded into by hydraulic system in each layer on stratum, most as deep as to
500 meters, at least hydraulic pressure is wanted to be embedded in 50-70 header in a wellhole, if the power supply as sensor and letter using copper conductor
Number transmission, particularly use it for sensor traction maintenance, can because its deadweight caused by length change bring the very big of settling amount
Error, therefore signal transmission and the traction maintenance of sensor are used for using single-mode fiber.The magnetic field sensing used in the present invention
Device is F-P optical fiber interference type magnetic field sensors.
As shown in figure 1, single longitudinal mode laser 1, the 1st~the 3rd coupler the 2~4, the 1st and the 2nd optical-electrical converter 5a and 5b,
Signal condition and data acquisition unit 6 constitute the part A of fine data measuring system.1st and the 2nd hollow gathering magnet the 7 and 12, the 1st
Fine data measuring system is constituted with 2F-P magnetic field sensors 8 and 11, solid gathering magnet 9 (its length is L) and PVC sleeve pipes 10
Part B.In the present invention, the 1st~the 3rd coupler 2,3,4 is 2 × 2 fiber couplers.
Single longitudinal mode laser 1 is connected with left side one end of the 1st coupler 2, and the right side two ends of the 1st coupler 2 are respectively with the 2nd
It is connected with left side one end of the 3rd coupler 3,4.Right side one end of 2nd coupler 3 passes through single-mode fiber and 1F-P magnetic field sensings
Device 8 is connected.Right side one end of 3rd coupler 4 is connected by single-mode fiber with 2F-P magnetic field sensors 11.
The left side other end of 2nd coupler 3 and the 1st optical-electrical converter 5a are connected；The left side other end of 3rd coupler 4 and the 2nd light
Electric transducer 5b is connected；1st and the 2nd optical-electrical converter 5a, 5b is connected with data acquisition unit 6 respectively.
Solid poly- bar magnet 9,1F-P magnetic fields by the 1st hollow gathering magnet 12,2F-P magnetic field sensors 11, length for L
Sensor 8, the 1st hollow gathering magnet 7 are sequentially placed into PVC sleeve pipes 10, two single-mode fibers are drawn, to whole PVC sleeve pipes 10
Make encapsulation process.
Referring to Fig. 2, the 1st and 2F-P magnetic field sensors be Fabry-Perot fiber optic interference-type magnetic field sensor.The biography
Sensor includes hollow pipe, single-mode fiber and glassy metal silk, in the present embodiment, and glassy metal silk is using nickel glassy metal silk.
The single-mode fiber of the light end face after cleaning and nickel glassy metal silk are loaded into blend compounds from hollow pipe two ends to fix.Fiber end face and
Fabry-Perot (F-P) chamber is constituted between glassy metal silk end face.The light transmitted by single-mode fiber is in fiber end face reflecting part
Interference, when external magnetic field changes, nickel metal are produced with the light that single-mode fiber is entered back into after nickel glassy metal silk end face reflection
Small change can occur for glass fiber end face, and the change of light phase is produced immediately.In field of sensing technologies, phase-detection is most clever
Quick detection, such structure can detect the change of 1/10000Gauss magnetic field intensities.
The measuring principle of the fine data measuring system of the present invention is as follows：
F-P cavity, the narrow linewidth that single longitudinal mode laser 1 is sent are constituted between single-mode fiber end face and nickel glassy metal silk end face
1550nm infrared lights passed to respectively in the 1st and 2F-P magnetic field sensors 8 and 11 by the 1st, the 2nd, the 3rd coupler 2~4
On fiber end face, its reflecting part and the light generation interference that optical fiber is entered back into after nickel glassy metal silk end face reflection, two F-P
The interference light of magnetic field sensor 8 and 11 passes through the 2nd coupler 3 and the 1st optical-electrical converter 5a and the He of the 3rd coupler 4 again respectively
2nd optical-electrical converter 5b reaches signal condition and data acquisition unit 6 carries out the processing of the two interference signals.
When external magnetic field changes, small change can occur for nickel glassy metal silk end face, and the change of light phase is produced immediately
Change, signal detection uses orthogonal phase shift mode, that is, have the signal combination of two phase difference pi/2s, drawn and phase by processing of circuit
The signal that position change is directly proportional, this signal is exactly measured field strength values, and such structure can detect 1/
The change of 10000Gauss magnetic field intensities.Two field strength values B1 and B2 are drawn by said process.
Referring to Fig. 3, because the distance of two F-P magnetic field sensors 8 and 11 is known as the L (length of i.e. solid gathering magnet 9
L).The distance that the line between header and two F-P magnetic field sensors 8,11 is settled in view of magnetic is respectively a, b, it is contemplated that
Square being inversely proportional for magnetic field intensity and distance, can calculate current header position：
As stated above, after a period of time, obtaining d1 values again, then settling amount is：
Δ d=f [(d1)n]-f[(d1)n+1],
Experiment shows that sedimentation location value and the difference of two measured magnetic fields are linear.
Claims (4)
1. a kind of fine data measuring system of hole multi-segment target surface subsidence change, it is characterised in that：Including single longitudinal mode
Laser (1), the couplers of 1- the 3rd (2,3,4), the 1st and the 2nd optical-electrical converter (5a, 5b), signal condition and data acquisition unit
(6), the 1st and the 2nd hollow gathering magnet (7,12), the 1st and 2F-P magnetic field sensors (8,11), solid gathering magnet (9) and PVC
Sleeve pipe (10),
The single longitudinal mode laser (1) is connected with left side one end of the 1st coupler (2), the right side two ends point of the 1st coupler (2)
Left side one end not with the 2nd and the 3rd coupler (3,4) is connected；Right side one end of 2nd coupler (3) passes through single-mode fiber and
1F-P magnetic field sensors (8) are connected；One end passes through single-mode fiber and 2F-P magnetic field sensors (11) on the right side of 3rd coupler (4)
It is connected；
The other end and the 1st optical-electrical converter (5a) are connected on the left of 2nd coupler (3), the other end and the 2nd on the left of the 3rd coupler (4)
Optical-electrical converter (5b) is connected, and the 1st and the 2nd optical-electrical converter (5a, 5b) is connected with data acquisition unit (6) respectively；
The 1st hollow gathering magnet (12), 2F-P magnetic field sensors (11), solid poly- bar magnet (9), 1F-P magnetic field sensors
(8) it is successively set on the 1st hollow gathering magnet (7) in the sealed PVC sleeve pipes (10).
2. fine data measuring system according to claim 1, it is characterised in that：The F-P magnetic field sensors are method cloth
In-Perot fiber optic interference-type magnetic field sensor, including hollow pipe, single-mode fiber and glassy metal silk, the single-mode fiber and gold
Category glass fiber from two ends is fitted into the hollow pipe in blend compounds fix, single-mode fiber end face and glassy metal silk end face between composition
Fabry-Perot (F-P) chamber.
3. fine data measuring system according to claim 2, it is characterised in that：The glassy metal silk is nickel metal glass
Glass silk.
4. fine data measuring system according to claim 1, it is characterised in that：The couplers (2-4) of 1- the 3rd are
For 2 × 2 couplers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267477.XA CN107014349B (en) | 2017-04-21 | 2017-04-21 | Fine data measurement system for ground subsidence change of one-hole multi-layered target |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710267477.XA CN107014349B (en) | 2017-04-21 | 2017-04-21 | Fine data measurement system for ground subsidence change of one-hole multi-layered target |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107014349A true CN107014349A (en) | 2017-08-04 |
| CN107014349B CN107014349B (en) | 2023-06-06 |
Family
ID=59447123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710267477.XA Active CN107014349B (en) | 2017-04-21 | 2017-04-21 | Fine data measurement system for ground subsidence change of one-hole multi-layered target |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107014349B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051762A (en) * | 2017-12-27 | 2018-05-18 | 北京信息科技大学 | A kind of magnetic field strength transducer and its performance test methods based on FP |
| CN108169696A (en) * | 2017-12-27 | 2018-06-15 | 北京信息科技大学 | A kind of magnetic field strength transducer and its performance test methods based on FBG |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5301001A (en) * | 1992-02-12 | 1994-04-05 | Center For Innovative Technology | Extrinsic fiber optic displacement sensors and displacement sensing systems |
| US6433543B1 (en) * | 2002-01-04 | 2002-08-13 | Mohsen Shahinpoor | Smart fiber optic magnetometer |
| CN101592487A (en) * | 2009-06-22 | 2009-12-02 | 铁道第三勘察设计院集团有限公司 | Magnet ring type settlement layered horizontal test system |
| CN102221679A (en) * | 2011-04-25 | 2011-10-19 | 东北大学 | Magnetofluid filling photonic crystal optical fiber F-P magnetic field sensor |
| CN102518110A (en) * | 2011-12-23 | 2012-06-27 | 基康仪器(北京)有限公司 | Device and method for measuring soil body displacement |
| CN202466554U (en) * | 2011-12-23 | 2012-10-03 | 基康仪器(北京)有限公司 | Soil displacement measuring device |
| CN204421889U (en) * | 2015-02-12 | 2015-06-24 | 长江岩土工程总公司（武汉） | Ground layering perpendicular displacement monitoring device |
| CN105044628A (en) * | 2015-07-13 | 2015-11-11 | 电子科技大学 | Fiber F-P cavity magnetic sensor and magnetic localization logging device |
-
2017
- 2017-04-21 CN CN201710267477.XA patent/CN107014349B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5301001A (en) * | 1992-02-12 | 1994-04-05 | Center For Innovative Technology | Extrinsic fiber optic displacement sensors and displacement sensing systems |
| US6433543B1 (en) * | 2002-01-04 | 2002-08-13 | Mohsen Shahinpoor | Smart fiber optic magnetometer |
| CN101592487A (en) * | 2009-06-22 | 2009-12-02 | 铁道第三勘察设计院集团有限公司 | Magnet ring type settlement layered horizontal test system |
| CN102221679A (en) * | 2011-04-25 | 2011-10-19 | 东北大学 | Magnetofluid filling photonic crystal optical fiber F-P magnetic field sensor |
| CN102518110A (en) * | 2011-12-23 | 2012-06-27 | 基康仪器(北京)有限公司 | Device and method for measuring soil body displacement |
| CN202466554U (en) * | 2011-12-23 | 2012-10-03 | 基康仪器(北京)有限公司 | Soil displacement measuring device |
| CN204421889U (en) * | 2015-02-12 | 2015-06-24 | 长江岩土工程总公司（武汉） | Ground layering perpendicular displacement monitoring device |
| CN105044628A (en) * | 2015-07-13 | 2015-11-11 | 电子科技大学 | Fiber F-P cavity magnetic sensor and magnetic localization logging device |
Non-Patent Citations (1)
| Title |
|---|
| 袁纵横 等: "光纤F-P微弱磁场传感器", 《传感器技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108051762A (en) * | 2017-12-27 | 2018-05-18 | 北京信息科技大学 | A kind of magnetic field strength transducer and its performance test methods based on FP |
| CN108169696A (en) * | 2017-12-27 | 2018-06-15 | 北京信息科技大学 | A kind of magnetic field strength transducer and its performance test methods based on FBG |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107014349B (en) | 2023-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107907065B (en) | Slip surface sensing anchor rod and monitoring method thereof | |
| CN102221332A (en) | Fiber grating multi-point sensing device for unconsolidated strata as well as monitoring system and method | |
| CN101667324B (en) | Pipeline landslide monitoring and early warning method and system and construction method of system | |
| CN106524936B (en) | Tunnel pipe shed deformation monitoring method | |
| CN201278201Y (en) | Pipeline landslide monitoring and early warning system based on fiber bragg grating | |
| CN102829728A (en) | Comprehensive monitoring system for side slope and landslip | |
| CN103438820A (en) | Borehole profile rock and soil mass layered deformation optical fiber measuring method | |
| CN210598961U (en) | Underground fluid distribution monitoring system based on distributed optical fiber sensing | |
| CN103821507A (en) | Method for detecting deformation of shaft wall of vertical shaft through distributed optical fibers | |
| CN112504336A (en) | Landslide area pipeline deformation monitoring system | |
| CN102879081A (en) | Data processing method in distributed optical fiber vibration system | |
| CN203642880U (en) | Fiber bragg grating distributed displacement sensor monitoring inner deformation of side slope | |
| CN105115624B (en) | A kind of floor undulation gushing water thermo parameters method formula method of testing | |
| CN110608678A (en) | Deep horizontal displacement monitoring device based on Brillouin scattering optical fiber | |
| CN107014349A (en) | The fine data measuring system of one hole multi-segment target surface subsidence change | |
| CN106959302A (en) | A kind of pile body integrity detection system and method based on low coherence interference technology | |
| CN105044628A (en) | Fiber F-P cavity magnetic sensor and magnetic localization logging device | |
| Liu et al. | Application of distributed optical fiber sensing technique in monitoring the ground deformation | |
| CN112031743A (en) | Underground fluid identification device and measurement method based on distributed optical fiber sensing technology | |
| Ren et al. | Study on the clay weakening characteristics in deep unconsolidated layer using the multi-point monitoring system of FBG sensor arrays | |
| Zhou et al. | Casing pipe damage detection with optical fiber sensors: a case study in oil well constructions | |
| CN206787543U (en) | The fine data measurement apparatus of one hole multi-segment target surface subsidence change | |
| Peng et al. | Application of FBG sensing technology to internal deformation monitoring of landslide | |
| CN103114561A (en) | Method of embedding fiber optic sensor (FOS) inside clay core wall | |
| CN201561828U (en) | Fiber grating geological disaster monitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |