CN106840363A - The defeated buried pipeline load identification of one kind length and safety monitoring system - Google Patents
The defeated buried pipeline load identification of one kind length and safety monitoring system Download PDFInfo
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- CN106840363A CN106840363A CN201710171798.XA CN201710171798A CN106840363A CN 106840363 A CN106840363 A CN 106840363A CN 201710171798 A CN201710171798 A CN 201710171798A CN 106840363 A CN106840363 A CN 106840363A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
- G01H9/004—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors
- G01H9/006—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means using fibre optic sensors the vibrations causing a variation in the relative position of the end of a fibre and another element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geophysics And Detection Of Objects (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The defeated buried pipeline load identification of one kind length and safety monitoring system, the vibration signal on distributed optical fiber vibration sensor that distributed optical fiber vibration test system Real-time Collection and the defeated buried pipeline of length are laid with ditch, vibration signal discriminance analysis system is by contrasting the load sample space of itself, identify the load type acted on buried pipeline ground, load and the load frequency, the load information transfer for identifying is analyzed to the safe evaluation center of buried pipeline, physical property based on Pipeline Ground, analyze pipeline stress and deformation behaviour under the load action, pipe safety is evaluated.The present invention realizes the distributed on line monitoring identification of the defeated buried pipeline ground imposed load of length, and the Mechanical Characters of Composite Ground of pipeline under imposed load is determined based on buried pipeline foundation parameter, pipe safety is evaluated, kilometer defeated buried pipeline structure damage monitorings long up to a hundred are capable of achieving, the long-term safety operation of buried pipeline is improved.
Description
Technical field
The invention belongs to important energy source installation security monitoring field, and in particular to a kind of length based on distributed vibration optical fiber
Defeated buried pipeline load identification and safety monitoring system.
Background technology
With growing fast and steadily for China's economy and flourishing for petroleum industry, the pipe-line construction engineering of China is obtained
Significant progress.By in August, 2015, Chinese Land petroleum pipeline total kilometrage has reached 120,000 kilometers, wherein crude oil pipeline
About 2.3 ten thousand kilometers, about 2.1 ten thousand kilometers of processed oil pipeline, about 7.6 ten thousand kilometers of natural gas line.These important energy conduit shapes
Into China across thing, stretch from the north to the south, overseas Oil/Gas Pipe grid office connected, as the important life for promoting China's economic development
Life line.Because buried pipeline has line length, wide characteristic distributions, the geological environment of various complexity is inevitably passed through, made
With the various complexity of load type on Pipeline Ground, such as traffic fatigue load, landslide, account for pressure, illegal excavation, earthquake
Deng.Buried pipeline Mechanical Characters of Composite Ground is closely related with institute bearing load type, and such as to be easily caused ground (particularly soft for traffic fatigue load
Soil base) sedimentation, once exceeding allowable strain value, can cause and pass through buried pipeline large deformation or even bursting accident occurs；Massif
Landslide can cause the Pipeline Ground soil body to produce irreversible deformation because of failure by shear and volumetric expansion, and buried pipeline can corresponding real estate
The uneven skew of life, and then destroy.Therefore, by recognize pipeline load (including load type, load and
Effect frequency etc.), its Mechanical Characters of Composite Ground is analyzed, safety evaluation is carried out to pipeline and is particularly important.
It is the shadow by theory analysis determination load to mechanics of piping proterties to grow defeated buried pipeline safety monitoring one at present
Ring, and then evaluate its safe condition.For example traffic loading is easily caused ground (particularly soft soil foundation) sedimentation, once exceed allow
Deformation values, can cause the buried pipeline for passing through to deform even bursting accident.Some scholars are to soft soil foundation buried pipeline traffic lotus
Mechanical Characters of Composite Ground under carrying has carried out theoretical research, it is proposed that long-term evenly load, three kinds of lotuses of traveling load and steady-state harmonic load
Carry model and the Mises stress of pipeline and vertical displacement have been carried out to calculate analysis, propose in engineering design and apply based on this
The measure of pipeline protection and based process in work.The load type randomness acted in Practical Project on pipeline is strong, and pipeline
Pass through geographical environment very severe, be difficult directly to determine imposed load type to field observation, can only be in a limited number of pipeline
Carry out the monitoring pipeline safety of such method；Two is to lay strain transducer, direct access pipeline configuration stress in pipe surface
Strain, safe evaluation is carried out to pipeline, but will be distributed, it is necessary to excavate Pipeline Ground for in-service pipeline, particularly buried pipeline
Formula strain transducer is laid on pipeline, and to ensure sensor and pipeline cooperative transformation, such as needs pipeline total length to monitor, then people
Power, financial resources high cost, sensor are laid and require height.Distributed vibration optical fiber sensor transmits phase in a fiber using light wave
Position, polarization etc. continuously can in real time monitor the vibration that various loads cause to the characteristic of vibration sensing, be widely used in prison
The circumference monitoring in the places such as prison, bank, airport, military area.Current distributed optical fiber vibration sensing technology is in the defeated buried pipeline of length
There is relevant report (Chinese invention patent in anti-excavation, stolen early warning and monitoring：A kind of Fibre Optical Sensor natural gas line leakage system
The leak point positioning method and system of system, patent No. CN201110272440.9), but the technology is used to the defeated buried pipeline of length
Imposed load carries out load identification and the corresponding Safety Assessment Methods of development yet there are no relevant report.In pipe safety evaluation side
Face, the pipe stress analysis being related under action of traffic loading in current part Research Literature and the stress for passing through goaf pipeline
Analysis document：《Buried pipeline stress analysis and on-the-spot test, Zhejiang Polytechnical University under Li Xinliang, Li Su chastity action of traffic loading
Journal, 2014,48 (11)：1976-1981》；《Yang Xiaohui, the buried pipeline sedimentation and deformation analysis of Zhao Zi dragons goafs, Taiyuan section
Skill college journal, 2016,37 (2)：134-137》, but its research is on condition that it is assumed that carry out evaluation under certain determination load situation
, recognize that load is carried out pipeline true stress and analyzed and evaluation rather than by field monitoring.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of defeated buried pipeline load identification of length and safety monitoring system.
The load identification and safety monitoring system are based on distributed vibration optical fiber sensing technology, act directly on the defeated buried pipeline ground of length
On load produce vibration, vibration the distributed optical fiber vibration sensor laid with ditch with long distance pipeline is transferred to by ground
On, the vibration signal that distributed optical fiber vibration test cell Real-time Collection distributed optical fiber vibration sensor is perceived, vibration signal
Transmit to vibration signal discriminance analysis unit and processed, identify the load type on Pipeline Ground, size and act on the frequency,
The mechanical characteristics of the defeated buried pipeline of length under physical property dissection load based on Pipeline Ground, are carried out to the defeated buried pipeline of length
Safety evaluation.
To reach above-mentioned purpose, the technical scheme is that：
The defeated buried pipeline load identification of one kind length and safety monitoring system, including distributed optical fiber vibration sensor 1, transmission
Optical cable 2, distributed optical fiber vibration test cell 3, vibration signal discriminance analysis unit 4 and the defeated safe evaluation unit of buried pipeline of length
5；It is characterized in that：
Distributed optical fiber vibration sensor 1 is laid with the defeated buried pipeline of length with ditch, and load action is produced on Pipeline Ground
Vibration, vibration information is propagated on distributed optical fiber vibration sensor 1 in ground；
Distributed optical fiber vibration test cell 3 is felt by the Real-time Collection distributed optical fiber vibration sensor 1 of transmission cable 2
The vibration information known, and the vibration information that will be gathered transmitted to vibration signal discriminance analysis unit 4；
The vibration signal discriminance analysis unit 4 recognizes load information, and the load letter that will be recognized according to vibration information
Breath is transferred to the defeated safe evaluation unit 5 of buried pipeline of length, and the safe evaluation unit 5 of the defeated buried pipeline of length is according to the lotus for receiving
The stress of pipeline and deformation under the information analysis load action are carried, pipe safety is evaluated.
The present invention further includes following preferred scheme：
The distributed optical fiber vibration sensor 1 both can be the single distribution laid with ditch with the defeated buried pipeline of length
Optical fibre vibration sensor, or the redundancy single-mode fiber in the communication cable laid with ditch with the defeated buried pipeline of length.
The distributed optical fiber vibration sensor 1 is laid with the defeated buried pipeline of length with ditch, and laying is smaller than 1m.
The distributed optical fiber vibration test cell 3 is directly gathered on pipeline ground by distributed optical fiber vibration sensor 1
Vibration information on base produced by various imposed loads, and vibration information is pre-processed, with the collection without imposed load
Signal carry out differential analysis, the vibration information of obvious vibration mutation signal is preserved in only collection.
The vibration signal discriminance analysis unit 4 recognizes that load information includes load type, size and counted
The load action frequency.
The vibration signal discriminance analysis unit 4 prestores load sample space, when vibration signal discriminance analysis unit 4
After collecting the vibration information that distributed optical fiber vibration sensor 1 is perceived, carry out energy spectrum analysis to vibration information, and with it is pre-
The energy spectrum of the load sample space for first storing is compared, and identifies load type and size, while to the load action frequency
Counted.
The load sample space is set up in laboratory or outdoor simulation in advance, is produced according to different load cases
Vibration information carries out energy spectrum analysis, sets up energy spectrum and load type and load one-to-one relationship.
Wherein, the load type includes that different grades of vehicular load, different types of accounting for press load, gob collapse
Load etc..
The vibration signal discriminance analysis unit 4 further includes self-teaching update module, when certain imposed load is produced
Vibration information not in the load sample space for prestoring when, vibration information discriminance analysis unit 4 by self-teaching more
New module is according to field observation load and analyzes the energy spectrum information for coming, and sets up energy spectrum and load type and load one
One corresponding relation, and the corresponding relation increased into load sample space.
The safe evaluation unit 5 of the defeated buried pipeline of length is based on the physical property and received load letter of Pipeline Ground
Breath, the mechanical characteristics of the defeated buried pipeline of length under dissection load, safe evaluation is carried out to the defeated buried pipeline of length.The defeated underground pipe of length
Road safely evaluation relate generally to it is following some：The ground of pipeline and the physical property of pipeline are primarily based on, buried pipeline power is set up
Learn model；The load that the load that next will identify that is calculated as pipeline；Finally, under the theory analysis calculating load pipeline it is true
Real Mechanical Characters of Composite Ground, the degree of impairment to pipeline is evaluated.
The invention has the advantages that distributed optical fiber vibration test system Real-time Collection is applied to and the defeated underground pipe of length
The vibration signal on distributed optical fiber vibration sensor that road is laid with ditch, vibration signal discriminance analysis system contrasts itself load
Sample space, identifies load type, size and counts the load action frequency according to vibration signal energy spectrogram, based on pipeline ground
The mechanical characteristic of pipeline under base physical property analysis identification load action, safety monitoring and assessment for the defeated buried pipeline of length have
It is significant.
Brief description of the drawings
Fig. 1 is based on the defeated buried pipeline load identification of present invention length and safety monitoring system structural representation
Fig. 2 is vibration signal discriminance analysis cell operation schematic diagram；
1 distributed optical fiber vibration sensor；2 transmission cables；3 distributed optical fiber vibration test cells；4 vibration signals are recognized
Analytic unit；The 5 defeated safe evaluation units of buried pipeline of length.
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with technical scheme and accompanying drawing.
Accompanying drawing 1 is the defeated buried pipeline load identification of length and safety monitoring method based on distributed vibration optical fiber.It is specific real
The mode of applying is that distributed optical fiber vibration sensor 1 is laid with the defeated buried pipeline of length with ditch, or directly will be same with the defeated buried pipeline of length
Used as distributed optical fiber vibration sensor 1, pipeline shakes redundancy single-mode fiber in the communication cable of ditch laying with distribution type fiber-optic
That moves sensor 1 is smaller than 1m；Load action produces vibration on Pipeline Ground, and vibration signal is transmitted to distribution through ground
Optical fibre vibration sensor 1, distributed fiberoptic sensor 1 perceives vibration information.Distributed optical fiber vibration sensor 1 and transmission cable
2 connections, transmission cable 2 accesses distributed optical fiber vibration test cell 3, and distributed optical fiber vibration test cell 3 passes through transmission light
On the Real-time Collection distributed optical fiber vibration sensor 1 of cable 2 perceive vibration signal, and to gather vibration signal make with non-load
Signal under carries out difference, preserves the signal being substantially mutated again after difference, and the signal transmission that will be preserved to vibration signal is known
Other analytic unit 4 is processed, and vibration signal discriminance analysis unit 4 carries out energy spectrum analysis and contrasts itself lotus to vibration information
The sample of sample space is carried, load type, size is identified and is counted the load action frequency.The load information transfer for identifying to
The defeated safe evaluation unit 5 of buried pipeline of length, physical property and received load information based on Pipeline Ground, dissection
The mechanical characteristics of the defeated buried pipeline of length under load, safe evaluation is carried out to the defeated buried pipeline of length.
Accompanying drawing 2 is vibration signal discriminance analysis system operating diagram.Specific embodiment is in advance at laboratory or family
The proposed vertical conventional load experiment of external mold, such as different grades of vehicular load (is labeled as vehicular load -1, vehicular load -2 ..., car
Load-n), it is different types of to account for pressure load (mark is pressure load -1 in figure, accounts for pressure load -2 ..., accounts for pressure load-m),
Gob collapse load and other imposed loads, various finder charges are acted on Pipeline Ground, distributed optical fiber vibration
The vibration signal that the various imposed loads of the Real-time Collection of test cell 3 are produced, corresponding energy spectrum analysis are carried out to vibration signal, are built
The corresponding relation of vertical oscillatory load and energy spectrum, various corresponding relations constitute load sample spaces.In actual monitoring, distributed light
Fine vibration-testing unit 3 gathers various vibration signals, and (vehicular load-i such as in figure accounts for pressure load-j or gob collapse lotus
Carry), vibration signal is transmitted to analysis of vibration signal recognition unit 4 (referring to accompanying drawing 1), analysis of vibration signal recognition unit 4 is first
Energy spectrum analysis first are carried out to vibration signal, then the energy spectrum sample in contrast sample space, phase is identified if matching
Load type, size and the statistics load action frequency answered；If it does not match, setting up the pass of new oscillatory load and energy spectrum
System, and be added in sample space, update load identification sample space.
The defeated buried pipeline pumped (conveying) medium of length can be oil, gas or water in the present invention；Distributed optical fiber vibration sensor 1 can be
A redundancy single-mode fiber in the communication cable laid with ditch with the defeated buried pipeline of length, it is also possible in the defeated buried pipeline 1m of distance
In the range of ditching and laying distributed optical fiber vibration sensor 1.
Claims (9)
1. a kind of defeated buried pipeline load identification of length and safety monitoring system, including distributed optical fiber vibration sensor (1), transmission
Optical cable (2), distributed optical fiber vibration test cell (3), vibration signal discriminance analysis unit (4) and the defeated buried pipeline of length are commented safely
Order unit (5)；It is characterized in that：
Distributed optical fiber vibration sensor (1) is laid with the defeated buried pipeline of length with ditch, and load action is produced on Pipeline Ground and shaken
Dynamic, vibration information is propagated on distributed optical fiber vibration sensor (1) in ground；
Distributed optical fiber vibration test cell (3) is by transmission cable (2) Real-time Collection distributed optical fiber vibration sensor (1)
The vibration information of perception, and the vibration information that will be gathered transmitted to vibration signal discriminance analysis unit (4)；
The vibration signal discriminance analysis unit (4) recognizes load information, and the load information that will be recognized according to vibration information
The defeated safe evaluation unit of buried pipeline (5) of length is transferred to, the safe evaluation unit of the defeated buried pipeline of length (5) basis is received
The stress of pipeline and deformation, evaluate to pipe safety under the load information analysis load action.
2. the defeated buried pipeline load identification of length according to claim 1 and safety monitoring system, it is characterised in that：
The distributed optical fiber vibration sensor (1) both can be the single distributed light laid with ditch with the defeated buried pipeline of length
Fine vibrating sensor, or the redundancy single-mode fiber in the communication cable laid with ditch with the defeated buried pipeline of length.
3. the defeated buried pipeline load identification of length according to claim 1 and safety monitoring system, it is characterised in that：
The distributed optical fiber vibration sensor (1) is laid with the defeated buried pipeline of length with ditch, and laying is smaller than 1m.
4. the defeated buried pipeline load identification of length according to claim 1 and 2 and safety monitoring system, it is characterised in that：
The distributed optical fiber vibration test cell (3) gathers the vibration signal that distributed optical fiber vibration sensor (1) is perceived, and
Signal under vibration signal and non-loading cracks is carried out into difference, vibration signal of the difference more than setting Sudden Changing Rate is preserved, then
Transmit to vibration signal discriminance analysis unit (4).
5. the defeated buried pipeline load identification of length according to claim 1 and 2 and safety monitoring system, it is characterised in that：
The vibration signal discriminance analysis unit (4) recognizes that load information includes load type, size and the lotus for being counted
Load acts on the frequency.
6. the defeated buried pipeline load identification of length according to claim 5 and safety monitoring system, it is characterised in that：
The vibration signal discriminance analysis unit (4) prestores load sample space, when vibration signal discriminance analysis unit (4)
After collecting the vibration information that distributed optical fiber vibration sensor (1) is perceived, energy spectrum analysis are carried out to vibration information, and with
The energy spectrum of the load sample space for prestoring is compared, and identifies load type and size, while to load action frequently
It is secondary to be counted.
7. the defeated buried pipeline load identification of length according to claim 6 and safety monitoring system, it is characterised in that：
The load sample space is set up in laboratory or outdoor simulation in advance, according to the vibration that different load cases are produced
Information carries out energy spectrum analysis, sets up energy spectrum and load type and load one-to-one relationship.
8. the defeated buried pipeline load identification of length and safety monitoring system according to claim 6 or 7, it is characterised in that：
The vibration signal discriminance analysis unit (4) further includes self-teaching update module, when the generation of certain imposed load
When vibration information is not in the load sample space for prestoring, vibration information discriminance analysis unit (4) by self-teaching more
New module is according to field observation load and analyzes the energy spectrum information for coming, and sets up energy spectrum and load type and load one
One corresponding relation, and the corresponding relation increased into load sample space.
9. the defeated buried pipeline load identification of length according to claim 1 and safety monitoring system, it is characterised in that：
Physical property and received load letter of the safe evaluation unit of the defeated buried pipeline of length (5) based on Pipeline Ground
Breath, the mechanical characteristics of the defeated buried pipeline of length under dissection load, safe evaluation is carried out to the defeated buried pipeline of length；
The safe evaluation unit of the defeated buried pipeline of described length is primarily based on the ground of pipeline and the physical property of pipeline, sets up buried
Mechanics of piping model；The load that the load that next will identify that is calculated as pipeline；Finally, theory analysis calculating load down tube
The true Mechanical Characters of Composite Ground in road, the degree of impairment to pipeline is evaluated.
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| CN201710171798.XA CN106840363B (en) | 2017-03-22 | 2017-03-22 | A kind of defeated buried pipeline load identification of length and safety monitoring system |
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| CN201710171798.XA CN106840363B (en) | 2017-03-22 | 2017-03-22 | A kind of defeated buried pipeline load identification of length and safety monitoring system |
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Cited By (8)
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| CN107340380A (en) * | 2017-07-10 | 2017-11-10 | 武汉科技大学 | Goaf simulation test device for stability under a kind of mechanical execution load action |
| CN108229016A (en) * | 2017-12-29 | 2018-06-29 | 杭州杉石科技有限公司 | Electronic system arrangement method and device based on sequence graph model |
| CN108445934A (en) * | 2018-02-08 | 2018-08-24 | 衡阳泰豪通信车辆有限公司 | A method of realizing the control of multistation real-time collaborative |
| CN108535771A (en) * | 2018-04-26 | 2018-09-14 | 中国标准化研究院 | A kind of buried pipeline earthquake monitoring system and analogue experiment installation |
| CN109708008A (en) * | 2019-01-23 | 2019-05-03 | 北京市燃气集团有限责任公司 | Monitoring pipeline safety and method for early warning |
| CN111307055A (en) * | 2020-03-03 | 2020-06-19 | 成都管力安科技有限公司 | Design method of pipeline digital twin system |
| CN114323246A (en) * | 2021-12-17 | 2022-04-12 | 北京特里尼斯石油技术股份有限公司 | Pipeline safety monitoring method and device |
| CN115235421A (en) * | 2022-08-19 | 2022-10-25 | 中铁一局集团市政环保工程有限公司 | Pipeline settlement monitoring device based on distributed optical fiber |
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| CN108229016A (en) * | 2017-12-29 | 2018-06-29 | 杭州杉石科技有限公司 | Electronic system arrangement method and device based on sequence graph model |
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| CN111307055A (en) * | 2020-03-03 | 2020-06-19 | 成都管力安科技有限公司 | Design method of pipeline digital twin system |
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| CN115235421A (en) * | 2022-08-19 | 2022-10-25 | 中铁一局集团市政环保工程有限公司 | Pipeline settlement monitoring device based on distributed optical fiber |
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