CN204059120U - A kind of railway bed subsides real-time monitoring device - Google Patents
A kind of railway bed subsides real-time monitoring device Download PDFInfo
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- CN204059120U CN204059120U CN201420366687.6U CN201420366687U CN204059120U CN 204059120 U CN204059120 U CN 204059120U CN 201420366687 U CN201420366687 U CN 201420366687U CN 204059120 U CN204059120 U CN 204059120U
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- optical fiber
- fiber brillouin
- railway bed
- time monitoring
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 239000013307 optical fiber Substances 0.000 claims abstract description 42
- 239000000835 fiber Substances 0.000 claims abstract description 11
- 230000008054 signal transmission Effects 0.000 claims abstract description 7
- 210000003205 muscle Anatomy 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 10
- 239000003245 coal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Arrangements For Transmission Of Measured Signals (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
A kind of railway bed subsides real-time monitoring device, carries out Real-Time Monitoring to realize subsiding to railway bed within the scope of extra long distance.It comprises the long-distance optical fiber Brillouin sensing device group be embedded in along circuit bearing of trend interval in railway bed, adjacent two long-distance optical fiber Brillouin sensing device groups are connected by remote repeater (5), monitor signal is sent to optical fiber Brillouin sensing demodulator (2) by signal transmission fiber (3), and the signal of demodulation sends computer and data processor (1) to.
Description
Technical field
The utility model relates to geotechnical engineering monitoring, and particularly a kind of railway bed subsides real-time monitoring device.
Background technology
Disaster of subsiding mainly betides karst and coal mine gob, China's karst region area reaches 3,630,000 square kilometres, account for more than 1/3rd of area, its southwest and center area is the maximum strong development area of karst in flakes of China, as Guizhou, Yunnan, Guangxi, Hunan, Sichuan, Chongqing etc.Along with expanding economy, the engineering such as high-speed railway, speedway, petroleum pipeline, urban construction is difficult to pass round karst and coal mine gob completely, southwest railway is as expensive wide, Cheng Gui, Yun Gui, Sichuan-Tibet etc., along the line all through karst region, although take corresponding prophylactico-therapeutic measures in the design, but due to the complexity of the Forming Mechanism that subsides and the limitation of existing geological prospecting and construction technology, be difficult to ensure that Along Railway no longer subsides disaster; In addition, karst and coal mine gob burst disaster of subsiding has greatly disguise and sudden because of it, and its scene has very large randomness and contingency, and monitoring and prediction difficulty is very large.At present, it is the important disaster form of railway operation that karst and coal mine gob railway bed subside, serious threat railway operation.Therefore, scientifically holding and to subside disaster, Development of Railway Subgrade Subsidence disaster monitoring technology, is that prevention railway bed subsides the important channel of disaster.
At present, done some researchs both at home and abroad to karst monitoring, wherein the main geological radar that adopts of karst soil cave monitoring scans along the line along railway bed, and the method testing cost is high, sense cycle is long, can not realize Subgrade Subsidence real time monitoring function.Displacement transducer and soil pressure sensor can carry out point type deformation monitoring to roadbed, and the reconnaissance of this method sensor, with certain randomness, easily omits the most dangerous region.Distributed sensing technology can realize distributed measurement, and at home and abroad civil engineering, aerospace field obtain and pay attention to and be successfully applied in some important infrastructures (bridge, tunnel etc.).
Utility model content
Technical problem to be solved in the utility model is to provide a kind of railway bed and subsides real-time monitoring device, carries out Real-Time Monitoring to realize subsiding to railway bed within the scope of extra long distance.
It is as follows that the utility model solves the technical scheme that its technical problem adopts:
A kind of railway bed of the present utility model subsides real-time monitoring device, it is characterized in that: it comprises the long-distance optical fiber Brillouin sensing device group be embedded in along circuit bearing of trend interval in railway bed, adjacent two long-distance optical fiber Brillouin sensing device groups are connected by remote repeater, monitor signal is sent to optical fiber Brillouin sensing demodulator by signal transmission fiber, and the signal of demodulation sends computer and data processor to.
The beneficial effects of the utility model are, can realize subsiding to railway bed within the scope of extra long distance carrying out Real-Time Monitoring, can 100km be reached to the distance of roadbed Collapse monitor, with roadbed cooperative transformation and severe Service Environment can be resisted through strengthened optical fiber Brillouin sensing device group.
Accompanying drawing explanation
This manual comprises following four width accompanying drawings:
Fig. 1 is that a kind of railway bed of the utility model subsides the structural representation of real-time monitoring device;
Fig. 2 is that a kind of railway bed of the utility model subsides the laying mode schematic diagram of optical fiber Brillouin sensing device in roadbed in real-time monitoring device;
Fig. 3 is that a kind of railway bed of the utility model subsides the embedding manner schematic diagram of optical fiber Brillouin sensing device in roadbed in real-time monitoring device;
Fig. 4 is that subside optical fiber Brillouin sensing device and thread fiber in real-time monitoring device of a kind of railway bed of the utility model strengthens the combination schematic diagram of muscle;
Component name shown in figure and corresponding mark: computer and data processor 1, optical fiber Brillouin sensing demodulator 2, signal transmission fiber 3, optical fiber Brillouin strain transducer 4, remote repeater 5, optical fiber Brillouin temperature pick up 6, thread fiber strengthens muscle 7.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further illustrated.
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of railway bed of the present utility model real-time monitoring device that subsides comprises the long-distance optical fiber Brillouin sensing device group be embedded in along circuit bearing of trend interval in railway bed, adjacent two long-distance optical fiber Brillouin sensing device groups are connected by remote repeater 5, monitor signal is sent to optical fiber Brillouin sensing demodulator 2 by signal transmission fiber 3, the signal of demodulation sends computer and data processor 1 to, processed by computer and data processor 1 pair of Subgrade Subsidence signal, early warning and carry out long-term forecasting based on autoregression and moving average model (ARMA).
With reference to Fig. 2, the optical fiber Brillouin strain transducer 4 that described long-distance optical fiber Brillouin sensing device group comprises lateral separation, vertical interval is laid, and the optical fiber Brillouin temperature pick up 6 that vertical interval is laid.Each optical fiber Brillouin strain transducer 4 included in last group leader's distance optical fiber Brillouin sensing device group, the front end of optical fiber Brillouin temperature pick up 6 access a segment signal Transmission Fibers, access remote repeater 5 again, then access each optical fiber Brillouin strain transducer 4 corresponding in rear group leader's distance optical fiber Brillouin sensing device group, the front end of optical fiber Brillouin temperature pick up 6 by another segment signal Transmission Fibers.Before laying optical fiber Brillouin strain transducer 4 and optical fiber Brillouin temperature pick up 6; in advance at the soil box (groove width 2cm, groove depth 2cm) that foundation excavation longitudinally distributes; then along soil box laying optical fiber Brillouin strain transducer 4 and optical fiber Brillouin temperature pick up 6, cover earthing bed course at optical fiber Brillouin strain transducer 4 and optical fiber Brillouin temperature pick up 6 afterwards and sensor is protected.The last basis of normal laying again.
With reference to Fig. 3 and Fig. 4, for making Brillouin's strain transducer 4 and optical fiber Brillouin temperature pick up 6 with roadbed cooperative transformation and can resist severe Service Environment, described optical fiber Brillouin strain transducer 4 and optical fiber Brillouin temperature pick up 6 encapsulation are fixed on thread fiber and are strengthened in muscle 7.
The above a kind of railway bed of the utility model that just explains through diagrams subsides some principles of real-time monitoring device, be not the utility model to be confined to shown in and in described concrete structure and the scope of application, therefore every corresponding modify of being likely utilized and equivalent, all belong to the scope of the claims that the utility model is applied for.
Claims (3)
1. a railway bed subsides real-time monitoring device, it is characterized in that: it comprises the long-distance optical fiber Brillouin sensing device group be embedded in along circuit bearing of trend interval in railway bed, adjacent two long-distance optical fiber Brillouin sensing device groups are connected by remote repeater (5), monitor signal is sent to optical fiber Brillouin sensing demodulator (2) by signal transmission fiber (3), and the signal of demodulation sends computer and data processor (1) to.
2. a kind of railway bed as claimed in claim 1 subsides real-time monitoring device, it is characterized in that: the optical fiber Brillouin strain transducer (4) that described long-distance optical fiber Brillouin sensing device group comprises lateral separation, vertical interval is laid, and the optical fiber Brillouin temperature pick up (6) that vertical interval is laid.
3. a kind of railway bed as claimed in claim 1 subsides real-time monitoring device, it is characterized in that: described optical fiber Brillouin strain transducer (4) and optical fiber Brillouin temperature pick up (6) encapsulation are fixed on thread fiber and are strengthened in muscle (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420366687.6U CN204059120U (en) | 2014-07-03 | 2014-07-03 | A kind of railway bed subsides real-time monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420366687.6U CN204059120U (en) | 2014-07-03 | 2014-07-03 | A kind of railway bed subsides real-time monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204059120U true CN204059120U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420366687.6U Expired - Fee Related CN204059120U (en) | 2014-07-03 | 2014-07-03 | A kind of railway bed subsides real-time monitoring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066896A (en) * | 2015-07-18 | 2015-11-18 | 深圳市勘察研究院有限公司 | Karst collapse real-time fiber early warning forecasting system |
| CN105203626A (en) * | 2015-10-27 | 2015-12-30 | 西南大学 | Railway roadbed collapse full-process evolution dynamic monitoring system and monitoring method |
| CN105547364A (en) * | 2015-12-23 | 2016-05-04 | 南京航空航天大学 | Splicing-type distributed optical fiber sensing system used for monitoring in internal portion of roadbed |
| 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 |
-
2014
- 2014-07-03 CN CN201420366687.6U patent/CN204059120U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066896A (en) * | 2015-07-18 | 2015-11-18 | 深圳市勘察研究院有限公司 | Karst collapse real-time fiber early warning forecasting system |
| CN105203626A (en) * | 2015-10-27 | 2015-12-30 | 西南大学 | Railway roadbed collapse full-process evolution dynamic monitoring system and monitoring method |
| CN105203626B (en) * | 2015-10-27 | 2018-06-29 | 西南大学 | Railway bed collapses overall process Evolution dynamics monitoring system and monitoring method |
| CN105547364A (en) * | 2015-12-23 | 2016-05-04 | 南京航空航天大学 | Splicing-type distributed optical fiber sensing system used for monitoring in internal portion of roadbed |
| CN105547364B (en) * | 2015-12-23 | 2017-11-24 | 南京航空航天大学 | The splice type distributed optical fiber sensing system of roadbed internal monitoring |
| 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 |
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| 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: 20141231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |