CN107702689A - The monitoring system and monitoring method of a kind of surface subsidence monitoring - Google Patents
The monitoring system and monitoring method of a kind of surface subsidence monitoring Download PDFInfo
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- CN107702689A CN107702689A CN201710938882.XA CN201710938882A CN107702689A CN 107702689 A CN107702689 A CN 107702689A CN 201710938882 A CN201710938882 A CN 201710938882A CN 107702689 A CN107702689 A CN 107702689A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004062 sedimentation Methods 0.000 claims abstract description 35
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 230000008054 signal transmission Effects 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims description 46
- 239000013307 optical fiber Substances 0.000 claims description 28
- 230000010365 information processing Effects 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 14
- 230000008859 change Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 239000004744 fabric Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000382 optic material Substances 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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Abstract
The embodiments of the invention provide a kind of monitoring system of surface subsidence monitoring and monitoring method, it is related to and belongs to technical field of electronic measurement, it is possible to achieve the real-time monitoring of distributed ground settlement, classification of sedimentation warning function, and there is stable performance, the advantages of accuracy of detection is high.The monitoring system includes：Sensor, it is configured as measurement earth's surface horizontal direction and settles and produce the first signal；Signal transmission unit, electrically connected with the sensor, be configured as transmitting first signal；Signal demodulation unit, electrically connected with the signal transmission unit, be configured as demodulating first signal；Information process unit, electrically connected with the signal demodulation unit, be configured as the signal after demodulation being changed into ground settlement shift value.The monitoring system is distributed monitoring system.
Description
Technical field
The present invention relates to technical field of electronic measurement, more particularly to a kind of monitoring system of surface subsidence monitoring and monitoring
Method.
Background technology
Roadbed is an important component of line project (railway, highway, airfield runway etc.), especially high-speed railway
Higher requirement is proposed to the ride comfort of track, is subject to the basis of track structure weight and train load, it is also circuit
Most weak least stable component, the irregularity of roadbed physical dimension in engineering, the Geometric irregularity of track can be caused naturally, because
This needs basis to have higher stability and less permanent deformation, to ensure the high speed such as train, safety, even running.Due to
The characteristics of special engineering properties of weak soil and various carrier vehicle roadbeds, in general, the intensity of most section grounds with
The intractability of stability is all little, not as governing factor；To the main bugbear that engineering is brought it is sedimentation and deformation and its various
Solidification problem under the conditions for the treatment of measures, thus subgrade settlement problem on deformation be in the design of various circuits the master control to be considered because
Element.
The traditional monitoring method of subgrade settlement mainly has：Settle plate, single point settlement gage, Settlement Profiler pipe, settlement monitoring stake
Deng.The major defect of these monitoring methods is that installation is complicated, interference construction, influences construction quality, data acquisition is difficult, especially
Be point measurement, information content very little, it is difficult to grasp the change of whole piece subgrade settlement.Also some monitoring systems are in overall structure
It is more complicated, exist and be unfavorable for the various problems such as construction.
The content of the invention
It is existing at least to solve the embodiments of the invention provide a kind of monitoring system of surface subsidence monitoring and monitoring method
There is monitoring information amount present in technology very little, it is difficult to grasp the change of whole a wide range of ground settlement, and monitoring system is whole
It is more complicated in body structure, the one or more problems for being unfavorable for construction be present.
The monitoring system includes：
Sensor, it is configured as measurement earth's surface horizontal direction and settles and produce the first signal；
Signal transmission unit, electrically connected with the sensor, be configured as transmitting first signal；
Signal demodulation unit, electrically connected with the signal transmission unit, be configured as demodulating first signal；
Information process unit, electrically connected with the signal demodulation unit, be configured as being changed into ground by the signal after demodulation
Table sedimentation deformation value.
The monitoring system is distributed monitoring system.
In monitoring system provided in an embodiment of the present invention, the monitoring system is arranged to distributed, distribution can be obtained
Formula is measured, for example a plurality of branch line is connected on a main line.Distributed monitoring system is obtainable to contain much information, and distributed
The distributed SS resolution ratio of monitoring system is small, and spacing can be less than 5mm between single adjacent sensors, and measurement accuracy is non-
Chang Gao, and will appreciate that the change of the subsidence value in larger area region.And the monitoring system compares in overall structure
It is relatively simple, in the absence of being unfavorable for the various problems such as construction.
In a kind of possible implementation, in above-mentioned monitoring system provided in an embodiment of the present invention, the sensor is
Multichannel optical fiber sensor, and the spacing between the sensor that is connected largely improves the accurate of measurement between 2mm-5mm
Property.
In a kind of possible implementation, in above-mentioned monitoring system provided in an embodiment of the present invention, the multichannel light
Fiber sensor also includes being used to experience ground settlement deformation, and the stress that deformation of sedimentation is converted into the ess-strain of optical fiber passes
Sensing optical cable, for the sedimentation device by ground settlement displacement transfer to the stress sensing optical cable, and prevent optical cable from not drawn
Disconnected buffer unit.
In a kind of possible implementation, in above-mentioned monitoring system provided in an embodiment of the present invention, the buffer unit
In be provided with tediously long optical cable and the remaining long optical cable can freely stretch, optical cable can be avoided to be produced during stress and deformation and broken
Split.
In a kind of possible implementation, in above-mentioned monitoring system provided in an embodiment of the present invention, the multichannel light
Fiber sensor quantity is two or more, and the multichannel optical fiber sensor length is adapted with monitored area.
In a kind of possible implementation, in above-mentioned monitoring system provided in an embodiment of the present invention, described information processing
Unit is additionally provided with alarm, and earth's surface sedimentation deformation value can be alarmed.
In a kind of possible implementation, in above-mentioned monitoring system provided in an embodiment of the present invention, the multichannel light
Fiber sensor includes the multichannel optical fiber sensor that at least one length is limited in 1m.
Based on same inventive concept, as another aspect of the present invention, the embodiment of the present invention is additionally provided for earth's surface
The monitoring method of settlement monitoring, methods described are that earth's surface is monitored by above-mentioned monitoring system.The monitoring method can be with
Distributed measurement is obtained, information content is too big, will appreciate that the change of the subsidence value in larger area region, and measuring method ratio
It is easier.
In a kind of possible implementation, in above-mentioned monitoring method provided in an embodiment of the present invention, specifically include：It is described
Sensor measurement earth's surface horizontal direction settles and produces the first signal；
First signal is transferred to the signal demodulation unit by the signal transmission unit；
First signal is demodulated into secondary signal and the secondary signal is transferred into institute by the signal demodulation unit
State information process unit；
The secondary signal is converted into ground settlement shift value by described information processing unit, and carries out classifying alarm.
In a kind of possible implementation, in above-mentioned monitoring method provided in an embodiment of the present invention, first signal
For Brillouin information signal, secondary signal is stress signal.
Brief description of the drawings
Fig. 1 is the monitoring system planar structure schematic diagram provided in an embodiment of the present invention for surface subsidence monitoring；
Fig. 2 is the monitoring system operating diagram provided in an embodiment of the present invention for surface subsidence monitoring；
Fig. 3 is the monitoring method workflow schematic diagram for the surface subsidence monitoring that the present invention implements offer.
Embodiment
It is existing at least to solve the embodiments of the invention provide a kind of monitoring system of surface subsidence monitoring and monitoring method
There is monitoring information amount present in technology very little, it is difficult to grasp the change of whole a wide range of ground settlement, and monitoring system is whole
It is more complicated in body structure, the one or more problems of grade for being unfavorable for construction be present.
Below in conjunction with the accompanying drawing 1 in the embodiment of the present invention to Fig. 3, the technical scheme in the embodiment of the present invention is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
The embodiments of the invention provide a kind of monitoring system of surface subsidence monitoring and monitoring method, referring to Fig. 1；The prison
Examining system includes：
Sensor 4, it is configured as measurement earth's surface horizontal direction and settles and produce the first signal；
Signal transmission unit 3, electrically connected with the sensor, be configured as transmitting first signal；
Signal demodulation unit 2, electrically connected with the signal transmission unit, be configured as demodulating first signal；
Information process unit 1, electrically connected with the signal demodulation unit, be configured as being changed into ground by the signal after demodulation
Table sedimentation deformation value.
The monitoring system is distributed monitoring system.Distribution refers to same or like sensor spatially in certain
Regular array, a plurality of branch line is in most cases presented and is connected on a main line, the model in larger area and space can be monitored
Enclose, measurement accuracy can also be adjusted according to the arrangement of sensor.
In monitoring system provided in an embodiment of the present invention, the monitoring system is arranged to distributed, distribution can be obtained
Formula measure, information content is too big, and the distributed SS resolution ratio of distributed monitoring system is small, single adjacent sensors it
Between spacing can be less than 5mm, measurement accuracy is very high, and will appreciate that the change of the subsidence value in larger area region.
And the monitoring system is fairly simple in overall structure, in the absence of be unfavorable for construction etc. various problems.
Further, in above-mentioned monitoring system, the sensor is fibre optical sensor 4, and the fibre optical sensor 4 is based on cloth
In deep scattering effect construction, the sedimentation and deformation distribution on measurement surface horizontal direction or vertical direction, and to dangerous section
Carry out real-time monitoring alarming；And the spacing between the sensor that is connected largely improves the standard of measurement between 2mm-5mm
True property.
Further, in above-mentioned monitoring system, the multichannel optical fiber sensor 4 also includes being used to experience ground settlement change
Shape, and deformation of sedimentation is converted into the stress sensing optical cable 5 of the ess-strain of optical fiber, for ground settlement displacement transfer to be arrived
The sedimentation device 6 of the stress sensing optical cable, and the buffer unit 7 for preventing optical cable not to be pulled off.The stress sensing optical cable
5, it is the optical signal sensing technology based on Brillouin light scattering effect, it can be to ambient temperature and strain sensitive.
Further, in above-mentioned monitoring system, tediously long optical cable and the remaining long optical cable energy are provided with the buffer unit 7
It is enough freely to stretch, optical cable can be avoided to produce fracture during stress and deformation.
Further, in above-mentioned monitoring system, the quantity of multichannel optical fiber sensor 4 is two or more, and described more
Channel fiber sensor length 4 is adapted with monitored area, in distribution, and can formulate sensor length according to field condition.
Further, in above-mentioned monitoring system, described information processing unit 1 is additionally provided with alarm, and earth's surface can be sunk
Drop shift value is alarmed.Because distribution is set, alarm also into distribution, can the settling amount different to earth's surface be classified
Alarm.
Further, in above-mentioned monitoring system, the multichannel optical fiber sensor 4 is limited in 1m including at least one length
Multichannel optical fiber sensor, such as, first multichannel optical fiber sensor 4 (connection signal demodulation unit one end) length limitation
In 1m, lay monitored area for discrimination in logical calculated and happens is that local sedimentation and bulk settling.
Specifically, multichannel optical fiber sensor 4 can be the sensing unit of distributed measurement earth's surface horizontal direction sedimentation, can
Sensor length is formulated according to field condition；Ground settlement causes sedimentation device to sink, and sedimentation device and stress sensing optical cable 5 are tight
Close connection, so as to drive the under tension of stress sensing optical cable 5, buffer unit 6 discharges partial-length surplus optical cable, prevents stress from passing
Sensing optical cable is pulled off, and the stress of fibre optical sensor 4 shows as wavelength movement, is demodulated by signal demodulation unit 2, and upload to information
Processing unit 1, optical information variable quantity is converted into the ess-strain of stress sensing optical cable 5, is ultimately converted to sedimentation and deformation value,
Form distributed sedimentation schematic diagram.The scattered light signal of fibre optical sensor 4 moved by generation wavelength carries out optical time domain positioning, according to
Settlement carrys out analysis and assessment, carries out classifying alarm.
It is as described below to the principle of the present invention below in order to be better understood from the present invention.
The present invention is using optical fiber Brillouin sensing technology.In Brillouin scattering, the frequency of light is scattered relative to pump
Pu light has a frequency displacement, and the frequency displacement is commonly referred to as Brillouin shift.Scatter the size and fiber optic materials sound of light Brillouin shift amount
The characteristic of son has direct relation.When the fiber optic materials characteristic related to scattering light frequency is influenceed by temperature and strain, in cloth
Deep frequency displacement size will change.Therefore realized and divided by the frequency shift amount can for the backward Brillouin scattering light for determining pulsed light
Cloth temperature strain measures.
Brillouin scattering is showed by the generation of the stokes wave moved down relative to incident pump wave frequency rate in optical fiber,
Brillouin scattering can be regarded as the parameter interaction between pumping wave and stokes wave, sound wave.In cloth caused by scattering
Deep frequency shift amount is directly proportional to the velocity of sound in light：
fB=2nVA/λ (1)
In formula, VAFor the velocity of sound in optical fiber, λ is optical wavelength.
And the refractive index and the velocity of sound in optical fiber are all relevant with the factor such as the temperature of optical fiber and suffered stress, this makes in cloth
Deep frequency displacement fBChange with the change of parameter, temperature and fibre strain can all cause the linear movement of Brillouin's frequency, can represent
For：
Experiment finds that Power of Brillouin also changes with temperature and strain, and Power of Brillouin is linear with the rising of temperature
Increase, the linear decline with strain increase.Therefore Power of Brillouin is also referred to as：
Wherein, fB(0), P0Respectively T=0 DEG C, strain for 0 ε when Brillouin shift and power,Respectively
Temperature coefficient corresponding to Brillouin shift and the coefficient of strain,Respectively corresponding to Brillouin light power temperature coefficient and
The coefficient of strain.
It because strain facies is much smaller for influence of the temperature to Brillouin scattering luminous power, can typically ignore, and recognize
It is only relevant with temperature for Brillouin scattering luminous power.Therefore from 2,3 liang of formulas, by the luminous power for detecting Brillouin scattering
It is that can obtain the distributed intelligence of temperature along optical fiber, strain etc. with frequency.
The assessment system and optical fiber sensing technology of ess-strain-sedimentation and deformation effectively coordinate, i.e., the Brillouin in optical fiber dissipates
Information knots modification is penetrated, is directly changed into ess-strain value, sedimentation and deformation value is converted into by ess-strain value.
In order that the object, technical solutions and advantages of the present invention are clearer, below to reality provided in an embodiment of the present invention
When monitoring process and operation principle combination Fig. 1, Fig. 2 illustrate.
When earth's surface does not settle, all sedimentation devices 6 are not drawn all in original state, all sensors
Stretch, the ground settlement schematic diagram that information process unit 1 is shown is the horizontal linear of 0 coordinate, and earth's surface is in good condition.
If ground settlement occurs for sensor 1 and the section of sensor 2, the sedimentation device 6 of the section sinks, the He of sensor 1
Sensor 2 is stretched, and wavelength movement occurs, and the section wavelength amount of movement is converted into the section length by information process unit 1
Sedimentation value, and be shown in sedimentation deformation schematic diagram as shown in Figure 2, other sections are normal.
The workflow of the system is shown in Fig. 3, and ground settlement causes sedimentation device 6 to sink, sedimentation device 6 and stress sensing light
Cable 5 closely connects, and so as to drive stress sensing optical cable under tension, buffer unit 7 discharges partial-length surplus optical cable, prevent by
Power sensing optic cable 5 is pulled off, and the stress of fibre optical sensor 4 shows as wavelength movement, is demodulated by signal demodulation unit 2, and upload
To information process unit 1, optical information variable quantity is converted into the ess-strain of stress sensing optical cable 5, sedimentation is ultimately converted to and becomes
Shape value, form distributed sedimentation schematic diagram.The scattered light signal of fibre optical sensor 4 moved by generation wavelength, which carries out optical time domain, to be determined
Position, according to settlement come analysis and assessment, progress classifying alarm.
Based on same inventive concept, as another aspect of the present invention, the embodiment of the present invention is additionally provided for earth's surface
The monitoring method of settlement monitoring, illustrated in conjunction with accompanying drawing 1, Fig. 2, Fig. 3.
The monitoring method of the surface subsidence monitoring is that earth's surface is monitored by above-mentioned monitoring system.The monitoring side
Method can obtain distributed measurement, and information content is too big, will appreciate that the change of the subsidence value in larger area region, and measure
Method is easier.
In a kind of possible implementation, in above-mentioned monitoring method provided in an embodiment of the present invention, specifically include：It is described
Sensor measurement earth's surface horizontal direction settles and produces the first signal；
First signal is transferred to the signal demodulation unit by the signal transmission unit 3；
First signal is demodulated into secondary signal and the secondary signal is transferred into institute by the signal demodulation unit 2
State information process unit 1；
The secondary signal is converted into ground settlement shift value by described information processing unit 1, and carries out classifying alarm.
In a kind of possible implementation, in above-mentioned monitoring method provided in an embodiment of the present invention, first signal
It is Brillouin information signal for wavelength movable signal, secondary signal is stress signal.
When ground settlement causes sedimentation device 6 to sink, sedimentation device 6 is closely connected with stress sensing optical cable 5, so as to drive
The under tension of stress sensing optical cable 5, buffer unit 6 discharge partial-length surplus optical cable, prevent stress sensing optical cable 5 to be pulled off,
The stress of multichannel optical fiber sensor 4 shows as light scattering and changed, and is demodulated by signal demodulation unit 2, and upload to information
Processing unit 1, optical information is converted into the ess-strain of stress sensing optical cable, is ultimately converted to settlement, formed distributed
Settle schematic diagram.The scattered light signal of fibre optical sensor 4 moved by generation wavelength carries out optical time domain positioning, according to settlement come
Analysis and assessment, carry out classifying alarm.
Alarm can be audible-visual annunciator, and can transmit SMS notification to staff.If settling amount does not transfinite
If, some other processing can be done.
The monitoring system and monitoring method of surface subsidence monitoring provided in an embodiment of the present invention can be at least realized with next
Kind or multiple beneficial effect：
1. the real-time monitoring of distributed ground settlement can be realized, relative to point type settlement sensor, its monitoring range is line
Shape；
2. monitoring system stable performance provided in an embodiment of the present invention, accuracy of detection is high, not by electromagnetic interference；
3. the multichannel optical fiber sensor 4 in monitoring system provided in an embodiment of the present invention can realize series and parallel (wavelength-division
Multiplexing, time division multiplexing) flexible networking technology, expand monitoring range；
4. monitoring system provided in an embodiment of the present invention can realize sedimentation dynamic monitoring, sedimentation positioning and classification of sedimentation report
Alert function；
5. monitoring system provided in an embodiment of the present invention can realize that locally sedimentation and bulk settling are distinguished to monitored area
Not；
6. monitoring system provided in an embodiment of the present invention is simple, it is easy to construction, operation and maintenance；
7. monitoring system monitoring range provided in an embodiment of the present invention is big, cost is very low, it might even be possible to it is small to be generalized to life
Area and field etc..
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (10)
- A kind of 1. monitoring system of surface subsidence monitoring, it is characterised in that including：Sensor, it is configured as measurement earth's surface horizontal direction and settles and produce the first signal；Signal transmission unit, electrically connected with the sensor, be configured as transmitting first signal；Signal demodulation unit, electrically connected with the signal transmission unit, be configured as demodulating first signal；Information process unit, electrically connected with the signal demodulation unit, be configured as the signal after demodulation being changed into earth's surface and sink Shift value drops.The monitoring system is distributed monitoring system.
- 2. monitoring system as claimed in claim 1, it is characterised in that the sensor is multichannel optical fiber sensor, and phase Even the spacing between sensor is between 2mm-5mm.
- 3. monitoring system as claimed in claim 2, it is characterised in that the multichannel optical fiber sensor also includes being used to experience Ground settlement deforms, and deformation of sedimentation is converted into the stress sensing optical cable of the ess-strain of optical fiber, for by ground settlement Displacement transfer is to the sedimentation device of the stress sensing optical cable, and the buffer unit for preventing optical cable not to be pulled off.
- 4. monitoring system as claimed in claim 3, it is characterised in that tediously long optical cable and described is provided with the buffer unit Remaining long optical cable can freely stretch.
- 5. monitoring system as claimed in claim 3, it is characterised in that the multichannel optical fiber number of sensors be two with On, and the multichannel optical fiber sensor length is adapted with monitored area.
- 6. monitoring system as claimed in claim 1, it is characterised in that described information processing unit is additionally provided with alarm, energy It is enough that earth's surface sedimentation deformation value is alarmed.
- 7. monitoring system as claimed in claim 2, it is characterised in that the multichannel optical fiber sensor includes at least one length Degree is limited in 1m multichannel optical fiber sensor.
- 8. a kind of monitoring method of surface subsidence monitoring, it is characterised in that including being carried out with the monitoring system described in power 1 to earth's surface Monitoring.
- 9. monitoring method as claimed in claim 8, it is characterised in that the monitoring system with described in power 1 is carried out to earth's surface Monitoring includes：The sensor measurement earth's surface horizontal direction settles and produces the first signal；First signal is transferred to the signal demodulation unit by the signal transmission unit；First signal is demodulated into secondary signal and the secondary signal is transferred into the letter by the signal demodulation unit Cease processing unit；The secondary signal is converted into ground settlement shift value by described information processing unit, and carries out classifying alarm.
- 10. monitoring method as claimed in claim 9, it is characterised in that first signal is Brillouin information signal, Secondary signal is stress signal.
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Cited By (6)
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| CN107621255A (en) * | 2017-10-11 | 2018-01-23 | 王广 | A kind of flush type sedimentation monitoring system and monitoring method |
| CN108571945A (en) * | 2018-06-19 | 2018-09-25 | 山东省水利科学研究院 | A kind of method that application node array monitors underwater geomembrane |
| CN108759769A (en) * | 2018-06-19 | 2018-11-06 | 山东省水利科学研究院 | A kind of underwater geomembrane monitoring method using pentagon monitor disk |
| CN108844515A (en) * | 2018-06-19 | 2018-11-20 | 山东省水利科学研究院 | A kind of monitoring method and system of underwater geomembrane |
| CN109827543A (en) * | 2019-03-29 | 2019-05-31 | 重庆文理学院 | A kind of pile foundation type soil body sedimentation monitoring system based on optical fiber optical measuring technique |
| CN114370852A (en) * | 2021-12-15 | 2022-04-19 | 安徽理工大学 | Accurate evaluation method and system for working face well-ground combined test ground subsidence basin |
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| CN108571945A (en) * | 2018-06-19 | 2018-09-25 | 山东省水利科学研究院 | A kind of method that application node array monitors underwater geomembrane |
| CN108759769A (en) * | 2018-06-19 | 2018-11-06 | 山东省水利科学研究院 | A kind of underwater geomembrane monitoring method using pentagon monitor disk |
| CN108844515A (en) * | 2018-06-19 | 2018-11-20 | 山东省水利科学研究院 | A kind of monitoring method and system of underwater geomembrane |
| CN109827543A (en) * | 2019-03-29 | 2019-05-31 | 重庆文理学院 | A kind of pile foundation type soil body sedimentation monitoring system based on optical fiber optical measuring technique |
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