CN104713490B - A kind of apparatus and method based on the measurement big strain of country rock of Optical Fiber Grating Displacement Meter string - Google Patents
A kind of apparatus and method based on the measurement big strain of country rock of Optical Fiber Grating Displacement Meter string Download PDFInfo
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- CN104713490B CN104713490B CN201510056789.7A CN201510056789A CN104713490B CN 104713490 B CN104713490 B CN 104713490B CN 201510056789 A CN201510056789 A CN 201510056789A CN 104713490 B CN104713490 B CN 104713490B
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- Prior art keywords
- flange
- displacement meter
- country rock
- optical fiber
- fiber grating
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- Expired - Fee Related
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 126
- 239000011435 rock Substances 0.000 title claims abstract description 64
- 239000013307 optical fiber Substances 0.000 title claims abstract description 56
- 238000005259 measurement Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000006698 induction Effects 0.000 claims abstract description 15
- 230000008054 signal transmission Effects 0.000 claims abstract description 14
- 239000002002 slurry Substances 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 239000004568 cement Substances 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 description 7
- 239000011440 grout Substances 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000010348 incorporation Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
Description
Claims (4)
- A kind of 1. device based on the measurement big strain of country rock of Optical Fiber Grating Displacement Meter string, it is characterised in thatIncluding the displacement meter being sequentially connected with;The displacement meter includes displacement induction mechanism and the signal switching mechanism connected by signal transmission mechanism;The displacement of the country rock of its installation site is changed into what can be conveyed by signal transmission mechanism by the displacement induction mechanism Signal;The signal switching mechanism includes display screen, and the signal from signal transmission mechanism is changed into by the signal switching mechanism Readable information;The displacement is calculated as Optical Fiber Grating Displacement Meter, and the signal transmission mechanism is optical cable, and the optical cable is based on light along described Fine grating displacement meter string measures the axially arranged of the device of the big strain of country rock;The displacement induction mechanism include be sequentially connected first flange, head rod, displacement transducer, bourdon tube, second Connecting rod and second flange;The first flange is connected with the second flange, and the optical cable is sequentially connected the displacement sensing Device;Connected between the bourdon tube and second connecting rod by stainless steel measuring staff;Positioned at same Optical Fiber Grating Displacement Meter two Protecting tube is arranged between the first flange and second flange at end, the slurries for pouring into mounting hole are isolated in into the optical fiber light The outside of grid displacement meter;The protecting tube includes the first protecting tube and the second protecting tube, and the quantity of first protecting tube is two, and described second The quantity of protecting tube is one, and the first flange and the second flange are cylinder boss, and one of them is described first anti- One end of pillar is airtightly fixed on the less face of cylinder of radius of the first flange, one end gas of another protecting tube Thickly it is fixed on the less face of cylinder of second flange radius, the other end of two first protecting tubes is airtightly fixed On the inwall of the second protecting tube;Also include steel wire;The steel wire that passes through for the steel wire is equipped with the first flange and the second flange by hole, the steel wire is along institute The axial direction for stating the measurement big strain of country rock sequentially passes through the steel wire and passes through hole;If the bird caging includes first flange node, second flange node and intermediate node, institute into passive node, the node It is two to state the quantity of first flange node and the quantity of the second flange node;Two first flange nodes are arranged on the device based on the measurement big strain of country rock of Optical Fiber Grating Displacement Meter string The both sides of the first flange of one end, and by the first flange for being arranged on the end be fixed on two first flange nodes it Between;Two second flange nodes are arranged on the device based on the measurement big strain of country rock of Optical Fiber Grating Displacement Meter string The both sides of the second flange of the other end, and by the second flange for being arranged on the end be fixed on two second flange nodes it Between;The intermediate node is arranged on the first flange of mating connection and the both sides of second flange, and by the first of mating connection Flange and second flange are stuck between two adjacent intermediate nodes;Optical cable positioned at mounting hole bottom curves annular shape, and is provided with flexible pipe in the optical cable outer cover in annular shape.
- 2. the device according to claim 1 based on the measurement big strain of country rock of Optical Fiber Grating Displacement Meter string, it is characterised in that The Optical Fiber Grating Displacement Meter is the Optical Fiber Grating Displacement Meter with temperature-compensating, and the signal switching mechanism is modulation /demodulation instrument.
- 3. it is a kind of measure the big strain of country rock method, it is characterised in that usage right require 1-2 any one of based on light The device of the fine grating displacement meter string measurement big strain of country rock, methods described comprise the following steps:S1, the measurement direction strained along country rock open up mounting hole on country rock;S2, formed according to the displacement meter of the length assembling respective numbers on detection direction and enclosed based on Optical Fiber Grating Displacement Meter string measurement The device of the big strain of rock;S3, the device that the big strain of country rock is measured based on Optical Fiber Grating Displacement Meter string for finishing assembling load mounting hole;S4, slurries are poured into mounting hole, the displacement induction mechanism is combined into one with country rock after slurries hardening.
- 4. the method for the measurement big strain of country rock according to claim 3, it is characterised in that the slurries in step S4 are cement Slurries.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510056789.7A CN104713490B (en) | 2015-02-03 | 2015-02-03 | A kind of apparatus and method based on the measurement big strain of country rock of Optical Fiber Grating Displacement Meter string |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510056789.7A CN104713490B (en) | 2015-02-03 | 2015-02-03 | A kind of apparatus and method based on the measurement big strain of country rock of Optical Fiber Grating Displacement Meter string |
Publications (2)
Publication Number | Publication Date |
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CN104713490A CN104713490A (en) | 2015-06-17 |
CN104713490B true CN104713490B (en) | 2017-12-01 |
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CN201510056789.7A Expired - Fee Related CN104713490B (en) | 2015-02-03 | 2015-02-03 | A kind of apparatus and method based on the measurement big strain of country rock of Optical Fiber Grating Displacement Meter string |
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CN (1) | CN104713490B (en) |
Cited By (1)
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 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108519072B (en) * | 2018-05-11 | 2019-10-18 | 中国科学院武汉岩土力学研究所 | Rock deformation measuring device and rock measuring equipment |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4133612A (en) * | 1977-07-06 | 1979-01-09 | The United States Of America As Represented By The Secretary Of The Army | Endless fiber interferometer rotary motion sensor |
US4138196A (en) * | 1977-07-06 | 1979-02-06 | The United States Of America As Represented By The Secretary Of The Army | Fiber interferometer rotary motion sensor |
CN103454021A (en) * | 2013-08-15 | 2013-12-18 | 中国矿业大学 | Tunnel surrounding rock stress monitoring device based on fiber grating sensing |
CN104006744A (en) * | 2014-04-29 | 2014-08-27 | 昆明理工大学 | Side slop optical fiber Bragg optical grating multi-point displacement sensor and using method thereof |
CN204007519U (en) * | 2014-08-20 | 2014-12-10 | 武汉光驰科技有限公司 | Optical fiber optical grating sensing experiment instrument |
-
2015
- 2015-02-03 CN CN201510056789.7A patent/CN104713490B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4133612A (en) * | 1977-07-06 | 1979-01-09 | The United States Of America As Represented By The Secretary Of The Army | Endless fiber interferometer rotary motion sensor |
US4138196A (en) * | 1977-07-06 | 1979-02-06 | The United States Of America As Represented By The Secretary Of The Army | Fiber interferometer rotary motion sensor |
CN103454021A (en) * | 2013-08-15 | 2013-12-18 | 中国矿业大学 | Tunnel surrounding rock stress monitoring device based on fiber grating sensing |
CN104006744A (en) * | 2014-04-29 | 2014-08-27 | 昆明理工大学 | Side slop optical fiber Bragg optical grating multi-point displacement sensor and using method thereof |
CN204007519U (en) * | 2014-08-20 | 2014-12-10 | 武汉光驰科技有限公司 | Optical fiber optical grating sensing experiment instrument |
Cited By (2)
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 | An advanced monitoring device and implementation method for the deformation curve of the surrounding rock in the whole process of tunnel excavation |
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CN104713490A (en) | 2015-06-17 |
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CB03 | Change of inventor or designer information |
Inventor after: Ren Dachun Inventor after: Hu Xuyang Inventor after: Huang Heping Inventor after: Mao Yanping Inventor after: Sun Jianhui Inventor after: Jiang Long Inventor after: Zhu Zhaohui Inventor after: Xu Yuan Inventor after: Fan Yilin Inventor after: Wang Wanshun Inventor after: Li Xiuwen Inventor after: Tang Guoqiang Inventor after: Duan Hang Inventor after: Shang Guanjin Inventor after: Yu Shengli Inventor after: Ke Chuanfang Inventor before: Ren Dachun Inventor before: Sun Jianhui Inventor before: Jiang Long Inventor before: Xu Yuan Inventor before: Fan Yilin Inventor before: Wang Wanshun Inventor before: Li Xiuwen Inventor before: Tang Guoqiang Inventor before: Duan Hang Inventor before: Shang Guanjin Inventor before: Yu Shengli Inventor before: Ke Chuanfang |
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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: 20171201 Termination date: 20190203 |