CN108007779A - A kind of sensing optic cable couples system safety testing device with soil deformation - Google Patents
A kind of sensing optic cable couples system safety testing device with soil deformation Download PDFInfo
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- CN108007779A CN108007779A CN201711431938.9A CN201711431938A CN108007779A CN 108007779 A CN108007779 A CN 108007779A CN 201711431938 A CN201711431938 A CN 201711431938A CN 108007779 A CN108007779 A CN 108007779A
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- 239000002689 soil Substances 0.000 title claims abstract description 74
- 238000009781 safety test method Methods 0.000 title claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 27
- 238000010168 coupling process Methods 0.000 claims abstract description 27
- 238000005859 coupling reaction Methods 0.000 claims abstract description 27
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 238000002474 experimental method Methods 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 238000010998 test method Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 33
- 230000003287 optical effect Effects 0.000 description 26
- 238000012544 monitoring process Methods 0.000 description 15
- 239000002184 metal Substances 0.000 description 11
- 239000000758 substrate Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 10
- 238000007586 pull-out test Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000009933 burial Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 229920006335 epoxy glue Polymers 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010068052 Mosaicism Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000253 optical time-domain reflectometry Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000003765 sex chromosome Anatomy 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/062—Special adaptations of indicating or recording means with mechanical indicating or recording means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
- G01N2203/0232—High pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0605—Mechanical indicating, recording or sensing means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention discloses a kind of sensing optic cable and couples system safety testing device with soil deformation, including experiment module, compression module and for measurement and the measurement module of gathered data, the experiment module includes being used for container, the sensing optic cable and draw-off gear being arranged in the sample for encapsulating soil sample, and the both ends of the length direction of the sensing optic cable are connected with the draw-off gear respectively；The compression module includes the high confining pressure room and hyperbaric environment feedway for holding said container；The configuration of the present invention is simple, easy to operate, effect is good, cost is low, and the coupling measurement that can effectively carry out between sensing optic cable and deep soil deformation is studied；Can be with the deep layer soil property of analog variation, soil mechanics environment；Test apparatus is simple in structure, and cost is relatively low, is applicable in the places such as laboratory, construction site, and experiment is convenient and efficient.
Description
Technical field
The present invention relates to Rock And Soil technology for deformation monitoring field, and in particular to a kind of sensing optic cable and soil deformation coupling
Test device and its method of work.
Background technology
The deformation monitoring of Rock And Soil is geotechnical engineering and the important subject in Geological Engineering field.Currently used for Rock And Soil
The technology of deformation monitoring mainly includes using traditional electro-mechanical formula sensor as the point type monitoring technology of representative and with optical fiber detection technology
Distributed monitoring technology for representative etc..Traditional electro-mechanical formula sensor includes inclinometer, total powerstation, strain gauge etc., these sensings
Device is easy to miss inspection, is perishable, survival rate is low, can not meet large area, the monitoring requirements of long range, and optical fiber detection technology is due to it
There is super distributed, long range, anti-interference, corrosion-resistant, matching is good, in geological disaster, geotechnical engineering such as tunnel and stake
The fields such as base have started extensive use.
Optical fiber detection technology is developed rapidly the 1980s using optical fiber as medium, and light is the new prison of carrier
Survey technology.In geology and deformation of geotechnical engineering monitoring application aspect, they by sensing optic cable by being laid in structure inside Rock And Soil
Distributed monitoring network is built, realizes the distributed monitoring of Rock And Soil deformation.
The laying mode of optical cable is divided into surface mount formula and direct burial at present.For side slope, surface subsidence, ground fissure, coal
The deformation monitorings such as layer mining overburden, are usually laid to realize by exploratory trench or drilling etc. using direct burial.Laid for direct burial,
The Coupling Deformation that plow-in optical cable and surrounding are tested the soil body is the key factor for determining monitoring result validity.Due to underground
Matter condition is more complicated, concealment is strong, and as depth increases, the soil lateral pressure in drilling also can constantly increase, therefore slaps
The interaction mechanism and coupling held plow-in optical cable and be around tested between the soil body are most important.But at present due to lacking phase
The lateral confined pressure pressue device answered, lacks relevant test in relation to the Coupling Deformation sex chromosome mosaicism between sensing optic cable and surrounding soil and tests
Card.
The content of the invention
It is an object of the invention to provide a kind of sensing optic cable and the coupling system safety testing device and analysis method of specimen deformation,
The problem of efficiently solving the coupling measurement between sensing optic cable and deep soil deformation.
A kind of sensing optic cable couples system safety testing device with soil deformation, it is characterised in that including experiment module, compression module
And for measuring and the measurement module of gathered data, the experiment module include being used for encapsulating the container of soil sample, draw-off gear and
The sensing optic cable being arranged in the sample, the both ends of the length direction of the sensing optic cable are connected with draw-off gear respectively；Institute
Stating compression module includes the high confining pressure room for holding said container and hyperbaric environment feedway.
Preferably, the hyperbaric environment feedway is hydraulic pressure intensifier.
It is further preferred that the hydraulic pressure intensifier include being used to provide highly pressurised liquid hydraulic pump, be arranged on it is described
The delivery gauge of hydraulic tube between hydraulic pump and the high confining pressure room and the pressure for measuring affiliated liquid.
Preferably, the draw-off gear includes draw-off gear submodule and for connecting the draw-off gear submodule and institute
The fixture of sensing optic cable is stated, the draw-off gear submodule includes drawing frame, pulley and drawing source.The sensing optic cable stretches out institute
High confining pressure room is stated, the draw-off gear submodule is arranged on the outside of the high confining pressure room.
It is further preferred that the drawing source is counterweight or stepper motor.
It is further preferred that the draw-off gear submodule further includes the measurement work of the displacement for recording the fixture
Tool.
It is further preferred that the survey tool is micrometer.
Preferably, the experiment module further includes firming sample device, and at least two firming sample devices are separately positioned on described
The both ends of the length direction of container.
It is further preferred that the container is heat-shrink tube.
It is further preferred that the both ends of the high confining pressure room are closed by two ring flanges, two firming sample devices point
It is not connected with two ring flanges.
The present invention also provides a kind of sensing optic cable and soil deformation coupling test method, it is characterised in that including as follows
Step：
Step 1, soil sample is inserted in heat-shrink tube, and sensing optic cable is buried in the inside of the soil sample, and reality is hit in layering；Will
The heat-shrink tube is put into high confining pressure room, and the heat-shrink tube both ends are cased with firming sample device, and the firming sample device is separately fixed at flange
On disk；Two ring flanges are mutually fixed with the high confining pressure room respectively, the sensing optic cable sequentially passes through the firming sample
It is connected behind device, the ring flange and the high confining pressure room with by fixture with draw-off gear submodule；By the sensing optic cable
It is connected with the measurement module；By the oil pressure pipe on oil pressure pump and the high confining pressure room.
Step 2, pressurizes and measures.Start the oil pressure pump, pressurize to the high confining pressure room and the soil sample is drawn
Pull out test.
The pull-out test refers to, after each drawing is stablized, record amesdial reading and collection demodulated equipment data, until
Optical cable is slipped with soil sample；The ratio k of the optical cable strain integrated value ∫ ε dl and fixture displacement S of amesdial record is calculated,
I.e.The coupling coefficient k of the sensing optic cable and the soil deformation can be obtained.It can be evaluated according to respective standard
Sensing optic cable is good and bad with soil deformation coupling.Step 1 and step 2 are repeated several times at various pressures, obtains different pressures
Coupling data under power.Different-diameter heat-shrink tube, repeat step one, step 2, to obtain accurate data can be chosen.
Beneficial effects of the present invention have：
The configuration of the present invention is simple, easy to operate, effect is good, cost is low, can effectively carry out sensing optic cable and become with deep soil
Coupling measurement research between shape.Can be with the deep layer soil property of analog variation, soil mechanics environment.Test apparatus is simple in structure, cost compared with
It is low, it is applicable in the places such as laboratory, construction site.Test convenient and efficient.
Brief description of the drawings
Fig. 1 is the side view of the coupling system safety testing device of sensing optic cable and specimen deformation in the embodiment of the present invention 1.
Fig. 2 be the embodiment of the present invention 1 in, zero confined pressure effect under, optical cable drawing displacement with monitoring displacement correspondence figure.
Fig. 3 be the embodiment of the present invention 1 in, 2MPa confined pressures effect under, optical cable drawing displacement with monitoring displacement correspondence
Figure.
Wherein, 1- compression modules；2- experiment modules；3- measurement modules；4- hydraulic pumps, 5- delivery gauges, 6- hydraulic tubes,
7- amesdials, 8- fixtures, 9- draw-off gears submodule, 10- heat-shrink tubes, 11- soil samples, 12- firming samples device, 13- ring flanges, 14-
High confining pressure room, 15- sensing optic cables, 16- drawings frame, 17- pulleys, 18- drawings source, 19-BOTDA demodulated equipments, 20- have data
The computer of analysis software.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and embodiments.
Embodiment 1
As shown in Figure 1, sensing optic cable couples system safety testing device with soil deformation, it include compression module 1, experiment module 2,
Measurement module 3.
Compression module 1 includes hydraulic pump 4, delivery gauge 5, hydraulic tube 6.Hydraulic tube 6 and hydraulic pump 4, delivery gauge 5
It is connected, hydraulic tube 6 is also connected with high confining pressure room 14；The 4 electronic oil of model CZB6302 types of hydraulic pump that this test is chosen
Pump, pressure limit 2-63MPa.This module is used to control the hydraulic pressure in high confining pressure room 14, can provide the hydraulic pressure of 2-20MPa.
Experiment module 2 includes amesdial 7, fixture 8, draw-off gear submodule 9, heat-shrink tube 10, soil sample 11, firming sample device
12nd, ring flange 13, high confining pressure room 14, sensing optic cable 15, drawing frame 16, pulley 17, drawing source 18.Specific match somebody with somebody is filled out in heat-shrink tube 10
Than soil sample 11, the embedded sensing optic cable 15 in inside；Firming sample device 12 is used cooperatively with heat-shrink tube 10, ring flange 13, firming sample device 12
The both ends of heat-shrink tube 10 are separately fixed at, and are connected with ring flange 13,12 center drilling of firming sample device, sensing optic cable 15 can be
It is movable in hole；Draw-off gear submodule 9 includes drawing frame 16, pulley 17, drawing source 18；When carrying out pull-out test, amesdial 7 is used
To record 8 displacement of fixture, draw-off gear submodule 9 is connected with sensing optic cable fixture 8.The selection diameter of heat-shrink tube 10 39.1mm,
The heat-shrink tube of tri- kinds of soil test specifications of 61.8mm, 101mm；Soil sample 11 chooses the soil body to be tested；Three kinds of rule of firming sample device 12
Lattice are corresponding with 10 diameter of heat-shrink tube；Chamber size Φ 150mm*1000mm in high confining pressure, can bear 20MPa internal pressures；Sensing optic cable 15
Metal Substrate strand optical cable, its a diameter of 5mm are chosen, rigidity meets pull-out test requirement；Choose a certain number of weights in drawing source 18
Code (constant pulling capacity is provided) or stepper motor (constant drawing displacement is provided).This module can be used for providing sense light under high confining pressure
The 8 displacement S of pulling capacity and measured material of cable 15 and soil deformation coupling measurement.
Measurement module 3 includes BOTDA demodulated equipments 19, has the computer 20 of Data Analysis Software.This test b OTDA is solved
Tune equipment 19 is NBX-6050A type BOTDA (FBG) demodulators, its spatial resolution is 5cm.This module is used for sensing optic cable and is drawn with the soil body
The collection and analysis of optical cable strain data during pulling out.
A kind of sensing optic cable includes the following steps with soil deformation coupling test method：
Step 1, instrument installation.Selection test soil sample 11, is respectively filled in 39.1mm diameters heat-shrink tube 10, and in inside
Reality is hit in embedded Metal Substrate strand optical cable, layering；The soil sample 11 made is put into high confining pressure room 14,10 both ends of heat-shrink tube are sleeved on firming
Outside sample device 12, and with epoxy glue sealing, it is fixed on ring flange 13；Ring flange 13 is screwed in high confining pressure room 14,
Fixation procedure protects Metal Substrate strand optical cable, and Metal Substrate strand optical cable exports high confining pressure room by aperture on firming sample device 12
14；Jockey 8, amesdial 7, draw-off gear submodule 9 above ring flange 13；Metal Substrate strand optical cable is connected into BOTDA
Demodulated equipment 19, BOTDA demodulated equipments connection computer；By oil pressure pipe connection high confining pressure room 14 on oil pressure pump.
Step 2, pressurizes and measures.Start oil pressure pump, according to 0MPa (control group), 2MPa, 4MPa, 6MPa, 8MPa,
The hydraulic pressure grade of 10MPa, 12MPa, 14MPa, 16MPa, 18MPa, 20MPa, the soil sample drawing carried out respectively under different hydraulic pressure are surveyed
Examination.After each drawing is stablized, 19 data of record 7 reading of amesdial and collection BOTDA demodulated equipments, until optical cable is slided with soil sample 11
It is de-；The ratio k for the 8 displacement S of fixture that Metal Substrate strand optical cable strain integrated value ∫ ε dl are recorded with amesdial 7 is calculated, i.e.,
It is good and bad with soil deformation coupling sensing optic cable can be evaluated according to respective standard.
Step 3, chooses 61.8mm, 10.1mm diameter heat-shrink tube 10, repeat step one, step 2 respectively.
This test can probe into sensing optic cable and soil body pull-out test coupling condition under different confined pressures, and 11 diameter of soil sample
Influence to sensing optic cable 15 and soil body pull-out test Coupling Deformation.
Below by sandy soil measure sensing optic cable with exemplified by the test of soil deformation coupling, illustrating the specific of this test method
Implementation process, but the application range not limited to this of this test method.The strain demodulated equipment of Coupling Deformation test is not limited to
BOTDA demodulated equipments, also can use Rayleigh class OTDR and Brillouin's class frequency domain measurement technology such as BOFDA etc. according to measurement range.
Sensing optic cable is tested with soil deformation coupling under high confining pressure
Step 1: instrument is installed：
Select Suzhou sandy soil (d10=0.115mm, d50=0.331mm, d60=0.371mm, Cu=3.239), insert
In 61.8mm diameters heat-shrink tube 10, and reality is hit in the embedded Metal Substrate strand optical cable in inside, layering；The soil sample 11 made is put into height
Pressure indoor 14,10 both ends of heat-shrink tube are sleeved on outside firming sample device 12, and with epoxy glue sealing, are fixed on ring flange 13；By method
Blue disk 13 is screwed in high confining pressure room 14, and fixation procedure protects Metal Substrate strand optical cable, and Metal Substrate strand optical cable passes through
Aperture export high confining pressure room 14 on firming sample device 12；Jockey 8, amesdial 7, draw-off gear submodule above ring flange 13
9；By Metal Substrate strand optical cable connection BOTDA demodulated equipments 19, BOTDA demodulated equipments 19 connect computer；By the oil pressure of oil pressure pump
Pipe connection high confining pressure room 14.
Step 2: pressurize and measure：
Start oil pressure pump, according to 0MPa (control group), 2MPa, 4MPa, 6MPa, 8MPa, 10MPa, 12MPa, 14MPa,
The hydraulic pressure grade of 16MPa, 18MPa, 20MPa, carry out 11 pull-out test of soil sample under different hydraulic pressure respectively.Each drawing is stablized
Afterwards, 19 data of 7 reading of amesdial and collection BOTDA demodulated equipments are recorded, until optical cable is slipped with soil sample 11；Calculate Metal Substrate rope
Shape optical cable strains the ratio k for the 8 displacement S of fixture that integrated value ∫ ε dl are recorded with amesdial 7, i.e.,And according to respective standard
It is good and bad with soil deformation coupling to evaluate sensing optic cable.
Attached drawing 2, the optical cable sensing data and Coupling Deformation comparison diagram that attached drawing 3 is selection 0MPa and 2MPa, Fig. 2 zero
Under confined pressure effect, the correspondence of optical cable drawing displacement and monitoring displacement；Under Fig. 3 acts on for 2MPa confined pressures, optical cable drawing displacement
Correspondence with monitoring displacement.As shown in Figure 2, optical cable is under the effect of zero confined pressure, and k values maintain 0.4 or so, fiber optic cable monitor number
Differ larger according to drawing displacement, sensing optic cable and soil deformation coupling are poor；From the figure 3, it may be seen that when optical cable is made in 2MPa confined pressures
Under, k values maintain 0.9 or so, show that the lower fiber optic cable monitor displacement of high confining pressure effect has high identical property with drawing displacement,
Sensing optic cable is obviously improved with soil deformation coupling.
By apparatus of the present invention and method of work, the calculating analysis by k values, can it is convenient, effectively to different confined pressures
Lower sensing optic cable is evaluated with soil deformation coupling.
Claims (10)
1. a kind of sensing optic cable couples system safety testing device with soil deformation, it is characterised in that including experiment module, compression module and
For measurement and the measurement module of gathered data, the experiment module is including being used to encapsulate the container of soil sample, being arranged on the sample
Sensing optic cable and draw-off gear in product, the both ends of the length direction of the sensing optic cable are connected with the draw-off gear respectively；
The compression module includes the high confining pressure room and hyperbaric environment feedway for holding said container.
2. sensing optic cable according to claim 1 couples system safety testing device with soil deformation, it is characterised in that the high pressure
Environmental supply device is hydraulic pressure intensifier.
3. sensing optic cable according to claim 2 couples system safety testing device with soil deformation, it is characterised in that the hydraulic pressure
Supercharging device includes being used for hydraulic pump, the hydraulic pressure being arranged between the hydraulic pump and the high confining pressure room for providing highly pressurised liquid
The delivery gauge of pipe and the pressure for measuring affiliated liquid.
4. sensing optic cable according to claim 1 couples system safety testing device with soil deformation, it is characterised in that the drawing
Device includes draw-off gear submodule and the fixture for connecting the draw-off gear submodule and the sensing optic cable, the drawing
Pulling device submodule includes drawing frame, pulley and drawing source.
5. sensing optic cable according to claim 4 couples system safety testing device with soil deformation, it is characterised in that the drawing
Source is counterweight or stepper motor.
6. sensing optic cable according to claim 4 couples system safety testing device with soil deformation, it is characterised in that the drawing
Device submodule further includes the survey tool of the displacement for recording the fixture.
7. sensing optic cable according to claim 6 couples system safety testing device with soil deformation, it is characterised in that the measurement
Instrument is micrometer.
8. sensing optic cable according to claim 1 couples system safety testing device with soil deformation, it is characterised in that the experiment
Module further includes firming sample device, and at least two firming sample devices are separately positioned on the both ends of the container.
9. sensing optic cable according to claim 8 couples system safety testing device with soil deformation, it is characterised in that the height encloses
The both ends of pressure chamber are closed by two ring flanges, and two firming sample devices are connected with two ring flanges respectively.
10. a kind of sensing optic cable and soil deformation coupling test method, it is characterised in that include the following steps：
Step 1, soil sample is inserted in the container of encapsulation soil sample, and buries sensing optic cable in the inside of the soil sample, and layering is hit
It is real；The container is put into high confining pressure room, the container both ends are cased with firming sample device, and the firming sample device is separately fixed at flange
On disk；Two ring flanges are mutually fixed with the high confining pressure room respectively, the sensing optic cable sequentially passes through the firming sample
It is connected behind device, the ring flange and the high confining pressure room with by fixture with draw-off gear submodule；By the sensing optic cable
It is connected with the measurement module；By the oil pressure pipe on oil pressure pump and the high confining pressure room.
Step 2, pressurizes and measures；Start the oil pressure pump, pressurize to the high confining pressure room and drawing survey is carried out to the soil sample
Examination.
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| CN201711431938.9A CN108007779B (en) | 2017-12-26 | 2017-12-26 | Sensing optical cable and soil body deformation coupling testing device |
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| CN201711431938.9A CN108007779B (en) | 2017-12-26 | 2017-12-26 | Sensing optical cable and soil body deformation coupling testing device |
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| CN108007779B CN108007779B (en) | 2020-07-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057750A (en) * | 2019-05-23 | 2019-07-26 | 南京大学 | A kind of OFDR distributed sensing optical cable and Soil Interface Experimental Study On Mechanical Properties method and apparatus based on transparent soil |
| CN111795652A (en) * | 2020-07-09 | 2020-10-20 | 南京大学 | Method and equipment for measuring deformation coordination of direct-buried sensing optical cable and soil body |
| CN114199679A (en) * | 2021-12-09 | 2022-03-18 | 南京大学 | Optical fiber drawing-based distributed in-situ testing device and method for frozen soil multi-physical-property parameters |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004191142A (en) * | 2002-12-10 | 2004-07-08 | Dai Ichi High Frequency Co Ltd | Fiber-optic sensor |
| CN101103287A (en) * | 2004-03-12 | 2008-01-09 | 雷德斯凯萨布斯有限公司 | Overmolded, ultra-small form factor |
| CN101231226A (en) * | 2008-01-29 | 2008-07-30 | 成都理工大学 | Rock high pressure infiltration experiment system |
| CN102323159A (en) * | 2011-08-12 | 2012-01-18 | 河海大学 | Permeameter for contact surface of soil and works at high stress, high hydraulic gradient, and large shear deformation |
| CN103438820A (en) * | 2013-09-05 | 2013-12-11 | 南京大学 | Borehole profile rock and soil mass layered deformation optical fiber measuring method |
| CN107063108A (en) * | 2017-04-26 | 2017-08-18 | 南京大学 | It is a kind of to test sensing optic cable and the method for soil deformation harmony |
-
2017
- 2017-12-26 CN CN201711431938.9A patent/CN108007779B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004191142A (en) * | 2002-12-10 | 2004-07-08 | Dai Ichi High Frequency Co Ltd | Fiber-optic sensor |
| CN101103287A (en) * | 2004-03-12 | 2008-01-09 | 雷德斯凯萨布斯有限公司 | Overmolded, ultra-small form factor |
| CN101231226A (en) * | 2008-01-29 | 2008-07-30 | 成都理工大学 | Rock high pressure infiltration experiment system |
| CN102323159A (en) * | 2011-08-12 | 2012-01-18 | 河海大学 | Permeameter for contact surface of soil and works at high stress, high hydraulic gradient, and large shear deformation |
| CN103438820A (en) * | 2013-09-05 | 2013-12-11 | 南京大学 | Borehole profile rock and soil mass layered deformation optical fiber measuring method |
| CN107063108A (en) * | 2017-04-26 | 2017-08-18 | 南京大学 | It is a kind of to test sensing optic cable and the method for soil deformation harmony |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057750A (en) * | 2019-05-23 | 2019-07-26 | 南京大学 | A kind of OFDR distributed sensing optical cable and Soil Interface Experimental Study On Mechanical Properties method and apparatus based on transparent soil |
| CN111795652A (en) * | 2020-07-09 | 2020-10-20 | 南京大学 | Method and equipment for measuring deformation coordination of direct-buried sensing optical cable and soil body |
| CN114199679A (en) * | 2021-12-09 | 2022-03-18 | 南京大学 | Optical fiber drawing-based distributed in-situ testing device and method for frozen soil multi-physical-property parameters |
| CN114199679B (en) * | 2021-12-09 | 2024-05-28 | 南京大学 | Distributed in-situ test method for frozen soil multi-physical parameters based on optical fiber drawing |
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