CN105547364A - Splicing-type distributed optical fiber sensing system used for monitoring in internal portion of roadbed - Google Patents
Splicing-type distributed optical fiber sensing system used for monitoring in internal portion of roadbed Download PDFInfo
- Publication number
- CN105547364A CN105547364A CN201510979589.9A CN201510979589A CN105547364A CN 105547364 A CN105547364 A CN 105547364A CN 201510979589 A CN201510979589 A CN 201510979589A CN 105547364 A CN105547364 A CN 105547364A
- Authority
- CN
- China
- Prior art keywords
- roadbed
- optical fiber
- monitoring
- fiber
- type distributed
- 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
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention discloses a splicing-type distributed optical fiber sensing system used for monitoring in an internal portion of a roadbed. A splicing-type optical fiber sensor is transversely arranged along a road in the internal portion of the roadbed. An optical fiber settlement meter is arranged on an edge of one side of a widening road. During monitoring, optical fiber monitoring equipment is used to carry out data collection. Simultaneously, on a monitoring terminal, ABAQUS software is used to establish a two-dimensional roadbed plane model and then displacement data of a measured optical fiber position is introduced into the roadbed plane model so as to obtain a two-dimensional dynamic model of roadbed settlement. Through settlement change data of the roadbed to be measured and the two-dimensional dynamic model, roadbed deformation is monitored in real time on the monitoring terminal. The system can be used for newly-built roads and can be used for operation roads. The system possesses advantages of audio-visual image, safety and reliability, real-time alarm and the like.
Description
Technical field
The invention belongs to sensor fibre monitoring technical field, specifically refer to a kind of splice type distributed optical fiber sensing system of roadbed internal monitoring.
Background technology
The build situation of roadbed determines the integral level of road to a great extent.For improving road quality, ensure traffic safety, make engineering safety and the economy coordinating and unifying, roadbed testing is a necessary link before road comes into operation.Common roadbed testing includes the conventional projects such as elevation, horizontal wall inscription, width, flatness, flexure, compactness, although the detection method of these routines can react roadbed integrality preferably, but the 3 D deformation of roadbed inner. layers cannot be reacted, especially the non-uniform settling of roadbed, the key factors such as internal fissure development can not correctly characterize.Particularly for built operation road, the distortion of roadbed inner. layers is more difficult to monitoring.
Recent year road Traffic Volume increases fast, and original road passage capability is obviously not enough to some extent, and therefore corresponding enlarging and widening project have all been carried out in various places, and expressway extension still can continue within a very long time from now on predictably.People also encounter many problems in relevant engineering reality, especially the non-uniform settling of Soft Roadbed, new and old road and faying surface problem, these difficult problems only rely on theoretical analysis or engineering experience to be all difficult to satisfactorily resolve, and this is also the place, blind area of routine monitoring method, so the proposition of new technology, new method just seems very necessary.
Distributed fiberoptic sensor is a kind of sensing mode based on the principle measuring the scattered light produced when light wave is propagated in a fiber.Ultimate principle based on the optical fiber measurement of Brillouin scattering is when optical fiber exists axial strain along the line or temperature changes, the frequency of the Brillouin scattering dorsad in optical fiber will be drifted about relative to the pulsed light frequency injected, and the change of the drift value of Brillouin scattering light frequency and the axial strain suffered by optical fiber and temperature is good linear relationship.
Fibre Optical Sensor is corrosion-resistant, volume is little, lightweight, deflection, and geometric configuration has many-sided adaptability, is not only convenient to lay install, and very little on the material property and mechanics parameter impact burying position underground, can realize harmless burying underground.Fiber-optic monitoring is highly sensitive, good reliability, long service life, and especially Distributed Optical Fiber Sensing Techniques can realize the distributed monitoring of structure physical quantity, can overcome the shortcoming that conventional port sensor exists detection leakage phenomenon.By to the data acquisition of laying optical fiber between base course, situation between sign base course that just can be authentic and valid, particularly all intuitively can react problems such as roadbed differential settlement, faying surface situation, roadbed longitudinal joints.
Summary of the invention
Be directed to above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of splice type distributed optical fiber sensing system of roadbed internal monitoring, to solve the problem such as settlement of subgrade, internal fissure development in prior art, the present invention can be used for the tracking and monitoring of newly-built road, also can be used for the study on monitoring of road after old road widening.
For achieving the above object, the splice type distributed optical fiber sensing system of a kind of roadbed internal monitoring of the present invention, it comprises: splice type distributed fiberoptic sensor, optical fiber sedimentometer, fiber Bragg grating (FBG) demodulator, distribution type fiber-optic measuring instrument and roadbed two-dimensional model; Wherein, splice type distributed fiberoptic sensor is arranged between base course, optical fiber sedimentometer is laid in widening road side curb, the displacement data of fiber position fiber Bragg grating (FBG) demodulator, distribution type fiber-optic measuring instrument measured imports in roadbed two-dimensional model, obtains the two-dimentional dynamic model of subgrade settlement; By sedimentation delta data and the two-dimentional dynamic model of tested roadbed, at monitor terminal, Real-Time Monitoring is carried out to subgrade deformation.
Preferably, described splice type distributed fiberoptic sensor diameter is 1cm, in horizontally disposed, comprises sensor fibre and temperature sensing optical fiber, and the type of the two is diameter 1mm standard single-mode fiber, and the connection between optical fiber adopts FC/APC joint.
Preferably, it is three-dimensional that described splice type distributed fiberoptic sensor is laid, for the monitoring section of a certain pile No., Fibre Optical Sensor layering is laid in the interlayer of roadbed, roadbed and bed course, bed course and subbase, subbase and basic unit, splice type distributed fiberoptic sensor on every layer along road lateral arrangement, termination lump monitoring box outside kerbstone; Each layer fiber deployment is in the same section of road, and horizontal level is identical, and optical fiber sedimentometer is laid in identical section widening road side curb; On each monitoring xsect, optic fibre end comes together in same position and is numbered and is protected.
Preferably, described tunneling boring subgrade deformation uses distribution type fiber-optic measuring instrument to carry out data monitoring collection, and optical fiber sedimentometer Monitoring Data is gathered by fiber Bragg grating (FBG) demodulator.
Preferably, when detecting the sedimentation of built operation road foundation inside, put into splice type distributed fiberoptic sensor by drilling subsection and monitor.
Preferably, in conjunction with temperature sensing optical fiber, temperature compensation is carried out to the fiber-optic monitoring information that distribution type fiber-optic measuring instrument is collected.
Preferably, at monitor terminal, by ABAQUS software, two-dimensional model is set up to construction subgrade; The displacement data of the fiber position of measurement is imported in the two-dimensional model of roadbed to be measured, obtain the sedimentation dynamic model of roadbed to be measured, by the settling data of roadbed and the two-dimentional dynamic model of roadbed, at monitor terminal, Real-Time Monitoring is carried out to roadbed.
Beneficial effect of the present invention:
The present invention can supplement the deficiency of conventional monitoring methods, obtain the interlayer effect of each layer of roadbed, it is all helpful that this studies the problem such as subgrade deformation, cracking to us, especially in the application of old road widening, the sedimentation and deformation of road width each point can be reacted comparatively intuitively, can more step to a new level to the research of road widening extension project; There is the advantages such as visual pattern, safe and reliable, Realtime Alerts.
Accompanying drawing explanation
Fig. 1 illustrates splice type distributed fiberoptic sensor first schematic diagram in the present invention;
Fig. 2 illustrates splice type distributed fiberoptic sensor second schematic diagram in the present invention;
Fig. 3 illustrates fiber deployment cross sectional representation in the present invention;
Fig. 4 illustrates fiber deployment floor map in the present invention;
Accompanying drawing illustrate: 10 be monitor terminal, 11 for optical fiber sedimentometer, 12 for splice type distributed fiberoptic sensor, 13 for fiber Bragg grating (FBG) demodulator, 14 for distribution type fiber-optic measuring instrument, 15 for roadbed two-dimensional model, 21 for roadbed, 22 for curb, 23 for basic unit, 24 for central interlayer band, 25 for bed course, 26 for subbase, 121 for temperature sensing optical fiber, 122 for sensor fibre, 123 be FC/APC joint.
Embodiment
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
Shown in Fig. 4, the splice type distributed optical fiber sensing system of a kind of roadbed internal monitoring of the present invention, it comprises: optical fiber sedimentometer 11, splice type distributed fiberoptic sensor 12, fiber Bragg grating (FBG) demodulator 13, distribution type fiber-optic measuring instrument 14 and roadbed two-dimensional model 15; Optical fiber sedimentometer 11 is laid in widening road side curb 22, and the displacement data of fiber position fiber Bragg grating (FBG) demodulator 13, distribution type fiber-optic measuring instrument 14 measured imports in roadbed two-dimensional model 15, obtains the two-dimentional dynamic model of subgrade settlement; By sedimentation delta data and the two-dimentional dynamic model of tested roadbed, carry out Real-Time Monitoring at monitor terminal 10 pairs of subgrade deformations.
Splice type distributed fiberoptic sensor 12 diameter is 1cm, in horizontally disposed, comprise sensor fibre 122 and temperature sensing optical fiber 121, overcome the shortcoming that conventional port sensor exists detection leakage phenomenon, can monitor each point data of road full width, can react to some extent diverse location sedimentation, faying surface situation.
For newly-built road, optical fiber is successively buried underground along with work progress, successively buries underground from lower to upper.Fiber type is diameter 1mm standard single-mode fiber, and the connection between optical fiber adopts FC/APC joint 123; When subgrade construction buries height underground to sensor fibre 122, after the compacting of roadbed making, lay splice type distributed fiberoptic sensor in Design stake number position, laterally lay along road, be fixed every 3 meters, termination is all at curb 22 outward flange.The laying of one deck road structure above carrying out again after Fibre Optical Sensor has been laid.When roadbed 21 fills top sensor fibre installation position, repeat above-mentioned Fibre Optical Sensor and bury step underground; So, in monitor layer positions such as roadbed 21, roadbed 21 and bed course 25, bed course 25 and subbase 26, subbase 26 and basic units 23, three-dimensional fiber-optic monitoring network can be formed, gather the situation studying each layer of roadbed, when laying at other sections, construct according to same method.
For built operation road, because roadbed builds up, cannot lay according to method above, can adopt favourable turn boring, segmentation puts into boring splice type distributed fiberoptic sensor 12, then slip casting; When laying at other sections, construct according to same method.
Section is laid, at widening road one lateral edges laying optical fiber sedimentometer 11, for the sedimentation of each layer distributed optical fiber sensing roadbed tunneling boring provides benchmark at distribution type fiber-optic.
Adopt distribution type fiber-optic measuring instrument 14(BOTDA) gather the strain data that sensor fibre measures.Suggestion fiber-optic monitoring frequency be constructed one day after once, one week latter two days are once, after January weekly, bimester after biweekly, its monitoring periods should at least more than 1 year.
Fiber Bragg grating (FBG) demodulator 13 is adopted to gather the Monitoring Data of optical fiber sedimentometer 11, suggestion and distribution type fiber-optic measuring instrument image data time and Frequency Synchronization.
Distribution type fiber-optic, to strain and temperature all comparatively sensitivity, needs the impact eliminating temperature effect when processing Monitoring Data.The present invention adopts the method for indirect compensation, temperature sensing optical fiber 121 is all provided with in splice type distributed fiberoptic sensor, in order to detect the interlayer temperature of each layer of roadbed, when carrying out fiber-optic monitoring, all should collect corresponding Temperature Datum, in order to eliminating temperature effect at every turn.
According to the optical fiber Brillouin frequency data that distribution type fiber-optic measuring instrument 14 gathers, make difference by frequency and can obtain its Brillouin shift; Then utilize temperature coefficient and the coefficient of strain of sensor fibre, and the impact of temperature effect can be eliminated with reference to the temperature information collected during monitoring, obtain the subgrade deformation information that sensor fibre detects.In general the position of Brillouin shift crest, trough just represents the generation of distortion, and according to the coefficient of strain and relevant modulus, we just can obtain roadbed internal stress strain effect, and can this calculating subgrade deformation.
According to the physical dimension of actual road structure, at monitor terminal, by ABAQUS software (ABAQUS software is the finite element software of a set of powerful engineering simulation, and its scope of dealing with problems is from relatively simple linear analysis to the nonlinear problem of many complexity), two-dimensional model is set up to construction subgrade; In material module and load, boundary condition, according to density, the initial boundary conditions of on-the-spot roadbed material, generate the two dimensional model of on-the-spot roadbed displacement field.
According to the particular location of the splice type distributed fiberoptic sensor 12 in roadbed, mark out in two dimensional model; And according to the strain effect of mark splice type distributed fiberoptic sensor 12 position out, tested roadbed 21 sedimentation delta data is added on the correspondence position of roadbed model as load; The delta data of the sedimentation of the tested roadbed of real-time update, obtains the dynamic model of tested subgrade settlement.
Embody rule approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (7)
1. a splice type distributed optical fiber sensing system for roadbed internal monitoring, is characterized in that, comprising: splice type distributed fiberoptic sensor, optical fiber sedimentometer, fiber Bragg grating (FBG) demodulator, distribution type fiber-optic measuring instrument and roadbed two-dimensional model; Wherein, splice type distributed fiberoptic sensor is arranged between base course, optical fiber sedimentometer is laid in widening road side curb, the displacement data of fiber position fiber Bragg grating (FBG) demodulator, distribution type fiber-optic measuring instrument measured imports in roadbed two-dimensional model, obtains the two-dimentional dynamic model of subgrade settlement; At monitor terminal, Real-Time Monitoring is carried out to subgrade deformation by the sedimentation delta data of tested roadbed and two-dimentional dynamic model.
2. the splice type distributed optical fiber sensing system of roadbed internal monitoring according to claim 1, it is characterized in that, described splice type distributed fiberoptic sensor diameter is 1cm, in horizontally disposed, comprise sensor fibre and temperature sensing optical fiber, the type of the two is diameter 1mm standard single-mode fiber, and the connection between optical fiber adopts FC/APC joint.
3. the splice type distributed optical fiber sensing system of roadbed internal monitoring according to claim 2, is characterized in that, carries out temperature compensation in conjunction with temperature sensing optical fiber to the fiber-optic monitoring information that distribution type fiber-optic measuring instrument is collected.
4. the splice type distributed optical fiber sensing system of roadbed internal monitoring according to claim 1, it is characterized in that, it is three-dimensional that described splice type distributed fiberoptic sensor is laid, for the monitoring section of a certain pile No., optical fiber layering is laid in the interlayer of roadbed, roadbed and bed course, bed course and subbase, subbase and basic unit, splice type distributed fiberoptic sensor on every layer along road lateral arrangement, termination lump monitoring box outside kerbstone; Each layer fiber deployment is in the same section of road, and horizontal level is identical, and optical fiber sedimentometer is laid in identical section widening road side curb; On each monitoring xsect, optic fibre end comes together in same position and is numbered and is protected.
5. the splice type distributed optical fiber sensing system of roadbed internal monitoring according to claim 1, it is characterized in that, described tunneling boring subgrade deformation uses distribution type fiber-optic measuring instrument to carry out data monitoring collection, and optical fiber sedimentometer Monitoring Data is gathered by fiber Bragg grating (FBG) demodulator.
6. the splice type distributed optical fiber sensing system of roadbed internal monitoring according to claim 1, is characterized in that, when detecting the sedimentation of existing operation road foundation inside, puts into splice type distributed fiberoptic sensor monitor by drilling subsection.
7. the splice type distributed optical fiber sensing system of roadbed internal monitoring according to claim 1, is characterized in that, at monitor terminal, sets up two-dimensional model by ABAQUS software to construction subgrade; The displacement data of the fiber position of measurement is imported in the two-dimensional model of roadbed to be measured, obtain the sedimentation dynamic model of roadbed to be measured, by the settling data of roadbed and the two-dimentional dynamic model of roadbed, Real-Time Monitoring is carried out to roadbed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510979589.9A CN105547364B (en) | 2015-12-23 | 2015-12-23 | The splice type distributed optical fiber sensing system of roadbed internal monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510979589.9A CN105547364B (en) | 2015-12-23 | 2015-12-23 | The splice type distributed optical fiber sensing system of roadbed internal monitoring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105547364A true CN105547364A (en) | 2016-05-04 |
| CN105547364B CN105547364B (en) | 2017-11-24 |
Family
ID=55826717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510979589.9A Expired - Fee Related CN105547364B (en) | 2015-12-23 | 2015-12-23 | The splice type distributed optical fiber sensing system of roadbed internal monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105547364B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168509A (en) * | 2016-07-29 | 2016-11-30 | 上海市政工程设计研究总院（集团）有限公司 | Bituminous paving temperature based on Distributed Optical Fiber Sensing Techniques monitoring system |
| CN106918323A (en) * | 2017-03-29 | 2017-07-04 | 中铁十四局集团有限公司 | Soil body settlement sensor and soil body sedimentation monitoring system |
| CN107091615A (en) * | 2017-06-14 | 2017-08-25 | 四川睿铁科技有限责任公司 | A kind of intelligent geotextiles monitored suitable for high ferro subgrade deformation with controlling |
| CN107314748A (en) * | 2017-05-26 | 2017-11-03 | 中铁二院工程集团有限责任公司 | A kind of long range roadbed continuous modification monitoring device and monitoring method |
| CN107621255A (en) * | 2017-10-11 | 2018-01-23 | 王广 | A kind of flush type sedimentation monitoring system and monitoring method |
| CN107702689A (en) * | 2017-10-11 | 2018-02-16 | 北京国华恒源科技开发有限公司 | The monitoring system and monitoring method of a kind of surface subsidence monitoring |
| CN108592996A (en) * | 2018-04-24 | 2018-09-28 | 长沙理工大学 | A kind of setting method of Intelligent road surface functional layer embedded-type sensor |
| CN109000613A (en) * | 2018-08-22 | 2018-12-14 | 太原理工大学 | A kind of three-dimensional rapid detection system of goaf geology sedimentation |
| CN109520471A (en) * | 2018-12-12 | 2019-03-26 | 石家庄铁道大学 | Optical fiber single hole deep soil settlement survey device and its monitoring method |
| CN110132228A (en) * | 2019-05-07 | 2019-08-16 | 哈尔滨工业大学 | A kind of subgrade settlement disease positioning based on flush type distribution optical cable and sedimentation degree characterizing method |
| CN111854682A (en) * | 2020-06-18 | 2020-10-30 | 中交第一公路勘察设计研究院有限公司 | Method and equipment for monitoring uneven settlement of roadbed based on optical fiber implanted threaded beam |
| CN113280863A (en) * | 2021-06-07 | 2021-08-20 | 兰州大学 | Comprehensive observation method for temperature and strain of roadbed water stabilization layer based on embedded optical fiber |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080144366A1 (en) * | 2006-12-18 | 2008-06-19 | Wei Zheng | Dual-bit memory device having trench isolation material disposed near bit line contact areas |
| CN102012225A (en) * | 2010-09-28 | 2011-04-13 | 黎剑华 | Optical fiber monitoring system of highway soft foundation |
| EP2008934A3 (en) * | 2007-06-26 | 2011-05-18 | Honeywell International Inc. | Closed-loop cabin pressure control system test method with actual pressure feedback |
| CN102944219A (en) * | 2012-11-21 | 2013-02-27 | 北京佳讯飞鸿电气股份有限公司 | Subgrade settlement monitoring system |
| CN103175508A (en) * | 2011-12-23 | 2013-06-26 | 同方威视技术股份有限公司 | Monitoring for settlement of railroad bed |
| CN204059120U (en) * | 2014-07-03 | 2014-12-31 | 中铁二院工程集团有限责任公司 | A kind of railway bed subsides real-time monitoring device |
| CN204630570U (en) * | 2015-04-22 | 2015-09-09 | 昆明地铁运营有限公司 | A kind of track traffic Foundation Settlement Monitor device |
-
2015
- 2015-12-23 CN CN201510979589.9A patent/CN105547364B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080144366A1 (en) * | 2006-12-18 | 2008-06-19 | Wei Zheng | Dual-bit memory device having trench isolation material disposed near bit line contact areas |
| EP2008934A3 (en) * | 2007-06-26 | 2011-05-18 | Honeywell International Inc. | Closed-loop cabin pressure control system test method with actual pressure feedback |
| CN102012225A (en) * | 2010-09-28 | 2011-04-13 | 黎剑华 | Optical fiber monitoring system of highway soft foundation |
| CN103175508A (en) * | 2011-12-23 | 2013-06-26 | 同方威视技术股份有限公司 | Monitoring for settlement of railroad bed |
| CN102944219A (en) * | 2012-11-21 | 2013-02-27 | 北京佳讯飞鸿电气股份有限公司 | Subgrade settlement monitoring system |
| CN204059120U (en) * | 2014-07-03 | 2014-12-31 | 中铁二院工程集团有限责任公司 | A kind of railway bed subsides real-time monitoring device |
| CN204630570U (en) * | 2015-04-22 | 2015-09-09 | 昆明地铁运营有限公司 | A kind of track traffic Foundation Settlement Monitor device |
Non-Patent Citations (2)
| Title |
|---|
| 刘玉涛: "基于分布式光纤传感技术的新旧路基沉降变形监测研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 宋志强 等: "光纤光栅传感器在路基沉降监测中的应用研究", 《山东科学》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168509A (en) * | 2016-07-29 | 2016-11-30 | 上海市政工程设计研究总院（集团）有限公司 | Bituminous paving temperature based on Distributed Optical Fiber Sensing Techniques monitoring system |
| CN106918323A (en) * | 2017-03-29 | 2017-07-04 | 中铁十四局集团有限公司 | Soil body settlement sensor and soil body sedimentation monitoring system |
| CN107314748A (en) * | 2017-05-26 | 2017-11-03 | 中铁二院工程集团有限责任公司 | A kind of long range roadbed continuous modification monitoring device and monitoring method |
| CN107091615A (en) * | 2017-06-14 | 2017-08-25 | 四川睿铁科技有限责任公司 | A kind of intelligent geotextiles monitored suitable for high ferro subgrade deformation with controlling |
| CN107621255A (en) * | 2017-10-11 | 2018-01-23 | 王广 | A kind of flush type sedimentation monitoring system and monitoring method |
| CN107702689A (en) * | 2017-10-11 | 2018-02-16 | 北京国华恒源科技开发有限公司 | The monitoring system and monitoring method of a kind of surface subsidence monitoring |
| CN108592996A (en) * | 2018-04-24 | 2018-09-28 | 长沙理工大学 | A kind of setting method of Intelligent road surface functional layer embedded-type sensor |
| CN109000613A (en) * | 2018-08-22 | 2018-12-14 | 太原理工大学 | A kind of three-dimensional rapid detection system of goaf geology sedimentation |
| CN109520471A (en) * | 2018-12-12 | 2019-03-26 | 石家庄铁道大学 | Optical fiber single hole deep soil settlement survey device and its monitoring method |
| CN109520471B (en) * | 2018-12-12 | 2023-09-19 | 石家庄铁道大学 | Optical fiber single-hole layered settlement monitoring device and monitoring method thereof |
| CN110132228A (en) * | 2019-05-07 | 2019-08-16 | 哈尔滨工业大学 | A kind of subgrade settlement disease positioning based on flush type distribution optical cable and sedimentation degree characterizing method |
| CN110132228B (en) * | 2019-05-07 | 2021-02-19 | 哈尔滨工业大学 | Roadbed settlement disease positioning and settlement degree characterization method based on embedded distributed optical cable |
| CN111854682A (en) * | 2020-06-18 | 2020-10-30 | 中交第一公路勘察设计研究院有限公司 | Method and equipment for monitoring uneven settlement of roadbed based on optical fiber implanted threaded beam |
| CN113280863A (en) * | 2021-06-07 | 2021-08-20 | 兰州大学 | Comprehensive observation method for temperature and strain of roadbed water stabilization layer based on embedded optical fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105547364B (en) | 2017-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105547364A (en) | Splicing-type distributed optical fiber sensing system used for monitoring in internal portion of roadbed | |
| CN102434209B (en) | Monitoring method for influence on adjacent existing structures from tunnel excavation | |
| CN107747936B (en) | Method for monitoring surface settlement deformation of underground independent space on line | |
| CN202947731U (en) | Settlement information acquisition system | |
| CN103175508A (en) | Monitoring for settlement of railroad bed | |
| CN106959302A (en) | A kind of pile body integrity detection system and method based on low coherence interference technology | |
| Liu et al. | Damage detection of tunnel based on the high-density cross-sectional curvature obtained using strain data from BOTDA sensors | |
| CN105865365A (en) | Distributed optical fiber monitoring calibration and test method and device for soil deformation | |
| CN103353280B (en) | For in-ground sensor network and the dispositions method thereof of the monitoring of highway life-span | |
| CN106949877A (en) | The monitoring method of ground settlement above a kind of various dimensions shield tunnel | |
| CN108195346B (en) | Method for monitoring underground multi-level space surface settlement deformation in real time | |
| Liu et al. | A state-of-the-practice review of three-dimensional laser scanning technology for tunnel distress monitoring | |
| CN112066945A (en) | Airport roadbed settlement monitoring structure and method based on distributed optical fiber embedding | |
| CN202330214U (en) | Displacement-sensor-based real-time detection system for compaction degree of foundation | |
| CN108548522A (en) | Rail settlement monitoring device and rail Monitoring method of the subsidence | |
| CN105157999B (en) | Appraisal procedure based on Distributed Optical Fiber Sensing Techniques pile integrality and lateral displacement | |
| CN108050988B (en) | Underground intelligent real-time whole-process monitoring method for underground multi-level space surface | |
| CN115988445A (en) | Slope staged combined monitoring method based on wireless transmission | |
| CN103591930A (en) | Apparatus for monitoring settlement of tunnel through distributed fiber, and method thereof | |
| CN203587095U (en) | Device for monitoring sedimentation of tunnel by using distributed optical fibers | |
| Gao et al. | Performance evaluation of distributed strain sensing nerves for monitoring ground collapse: A laboratory study | |
| Lienhart et al. | Distributed Fiber Optic Sensing on a Large Tunnel Construction Site: Increased Safety, More Efficient Construction and Basis for Condition-Based Maintenance | |
| CN210603283U (en) | Roadbed settlement monitoring device based on fiber grating technology | |
| Yi et al. | Intelligent settlement monitoring system of high-speed railway bridge | |
| CN104502951A (en) | Rayleigh wave railway substructure monitoring cavity three-dimensional positioning method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20171009 Address after: Yudaojie Qinhuai District of Nanjing City, Jiangsu Province, No. 29 210016 Applicant after: Nanjing University of Aeronautics and Astronautics Applicant after: Municipal Works Design Institute, Qingdao City Co., Ltd Address before: Yudaojie Qinhuai District of Nanjing City, Jiangsu Province, No. 29 210016 Applicant before: Nanjing University of Aeronautics and Astronautics |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20171124 Termination date: 20181223 |