CN206891877U - A kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system - Google Patents
A kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system Download PDFInfo
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- CN206891877U CN206891877U CN201720544392.7U CN201720544392U CN206891877U CN 206891877 U CN206891877 U CN 206891877U CN 201720544392 U CN201720544392 U CN 201720544392U CN 206891877 U CN206891877 U CN 206891877U
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- shearing
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- seepage flow
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- 238000012360 testing method Methods 0.000 title claims abstract description 97
- 239000011435 rock Substances 0.000 title claims abstract description 35
- 238000010008 shearing Methods 0.000 title claims abstract description 35
- 230000008878 coupling Effects 0.000 title claims abstract description 15
- 238000010168 coupling process Methods 0.000 title claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000002591 computed tomography Methods 0.000 claims abstract description 13
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 17
- 239000004917 carbon fiber Substances 0.000 claims description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 239000002828 fuel tank Substances 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system, including stablize integrally-built main machine frame, for sheared and the test cabinet of seepage tests, by the shearing loading device of oil pressure cntrol, the confined pressure servo-control system for controlling test specimen confined pressure, drive by swingle rotating device that lower flange rotating base rotates and for obtaining the CT scan device of test specimen interior three-dimensional image；The main machine frame includes base and reaction frame, and the rotating device is fixed on base, and the test cabinet is fixed on rotating device, and the reaction frame is fixed on test cabinet, and shearing loading device and servo-control system are placed on the reaction frame；The CT scan device includes radiographic source and detector, and the test cabinet both sides are respectively arranged radiographic source and detector.The utility model efficiently solves the problem of rock sample confined pressure and seepage flow, and realizes and obtain the 3-D scanning image inside test specimen by CT scan device during seepage flow and shearing test.
Description
Technical field
The utility model belongs to Geotechnical Engineering field, is related to a kind of rock seepage flow, shearing coupling test system, specifically
It is a kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system.
Background technology
There are some complicated technical problems on seepage flow in the great Geotechnical Engineering project of many countries in recent years, such as
The destruction of dam foundation can produce seepage flow under pressure effect, cause the dam foundation to occur to concentrate seepage erosion, jeopardize the general safety of dam body；
In terms of oil reservoir, understand the percolation law of rock mass has very crucial meaning to solving oil exploitation.This is with regard to an urgent demand rock
Geotechnological journey worker builds corresponding rock test system and method for testing to assess rock exactly under complicated mechanical condition
Seepage characteristic.Failure by shear is a kind of common form of rock mass damage, is a key during engineering long-time stability are assessed
Factor, consider that the effect of shearing is particularly significant in multi- scenarios method test.Substantial amounts of e measurement technology can only obtain test specimen table at present
The deformation-failure character in face, and CT scan technology can then carry out comprehensive monitoring to the structure change inside test specimen, from microcosmic
Angle understand rock Mechanism of Deformation And Failure, so as to deeper into the multi- scenarios method characteristic for understanding rock.At present to axle pressure and
Rock coupling characteristic test method under confined pressure effect is more ripe, but the effect of shearing how is considered in environment is coupled simultaneously
Great difficulty is then also faced applied to CT scan.
The content of the invention
In order to overcome the shortcomings of prior art can not consider in environment is coupled shearing effect and be applied to CT scan,
Utility model provides a kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system, efficiently solves rock
The problem of stone test specimen confined pressure and seepage flow, and realize and obtain three inside test specimen by CT devices during seepage flow and shearing test
Tie up scan image.
Technical scheme is used by the utility model solves its technical problem：
A kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system, including stablize integrally-built
Main machine frame, for being sheared and the test cabinet of seepage tests, by the shearing loading device of oil pressure cntrol, control test specimen confined pressure
Confined pressure servo-control system, drive by swingle the rotating device of lower flange rotating base rotation and for obtaining inside test specimen
The CT scan device of 3-D view；
Described main machine frame includes base and reaction frame, and the rotating device is fixed on the base, the test
Room is fixed on the rotating device, and the reaction frame is fixed on the test cabinet, and shearing loading is placed on the reaction frame
Device and servo-control system；
Described test cabinet includes pressure indoor, fluid shear chamber and seepage apparatus, and the pressure indoor is located at the outside of fluid shear chamber, institute
State and rock sample is placed in fluid shear chamber, the upper end of the rock sample half portion and the action end in contact of shearing loading device are described
Seepage apparatus includes water tank, inlet opening and delivery port, and the water in water tank flows into rock sample by inlet opening, by delivery port stream
Go out and be connected to measurement apparatus；Oil pump in fuel tank can extract the oil of high pressure out injection pressure indoor and rock sample is added
Pressure；
Described CT scan device includes radiographic source and detector, the test cabinet both sides be respectively arranged the radiographic source and
Detector.
Further, the pressure indoor includes upper flange cover plate, lower flange rotating base, confined pressure cylinder, high-strength bolt；It is described to enclose
Pressure cylinder is made up of carbon fibre material, is embedded in two pieces of flange plates up and down, upper flange cover plate and reaction frame lower shoe pass through height
Strength bolt is fixed, and lower flange cover plate and lower flange rotating base are fixed by high-strength bolt.
Further, the fluid shear chamber includes heat shrinking sleeve, carbon fiber test specimen deck, cushion block, displacement transducer and pressure
Head, semicolumn bodily form briquetting is vertically connected under very heavy pressure end, carbon fiber deck, test specimen are connected under above-mentioned semicolumn bodily form briquetting
Left side be placed in above-mentioned carbon fiber deck, above-mentioned briquetting passes through above-mentioned upper flange cover plate, and the loading of the left side of test specimen is cut
Shear force, sealed through the position of cover plate by sealing ring, above-mentioned carbon fiber deck bottom connection displacement transducer, which is used to measure, to be sheared
Displacement；The right side of test specimen respectively has a cushion block up and down, and its middle and lower part cushion block is fixed, and top cushion block is by being bolted to upper flange
On cover plate, cushion block can be pressed on test specimen by swivel bolt, play a part of fixed test specimen right side；Wrap up the thermal contraction of test specimen
Set, its top is stretched out at upper flange cover plate, and is fixed by high-strength bolt, heat shrinking sleeve bottom close and with lower flange cover plate
Connected by backing plate, connecting portion sets O-ring seal leakproof.
Further, described confined pressure servo-control system includes pressure sensor, oil pump, fuel tank and confined pressure SERVO CONTROL
Device, the confined pressure servo controller control the oil pump in fuel tank to extract the oil of high pressure out injection pressure indoor, and to rock sample
Pressurizeed；Pressure data can be transferred to confined pressure servo controller by the pressure sensor, and pressure indoor is enclosed by feedback
Pressure is adjusted.
Described rotating device includes lower flange rotating base, swingle and stepper motor, the lower flange rotating base
Be connected by swingle with stepper motor, the stepper motor drives swingle rotation so that lower flange rotating base and
Part more than base rotates, and obtains the scan image of 360 ° of test specimen.
The beneficial effects of the utility model are mainly manifested in：
1) realize and shearing and the rock mass state in which such as experiment, the true simulation dam foundation under seepage flow coupling；
2) test cabinet side wall is made using carbon fibre composite, while proof strength, does not influence the effect of CT scan
Fruit.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is carbon fiber test specimen deck detail drawing of the present utility model；
Fig. 3 is Section A-A figure of the present utility model；
Wherein, 1- oil pumps；2- fuel tanks；3- water tanks；4- water inlet pipes；5- flowlines；6- confined pressure servo controllers；7- oil-feeds
Hole；The very heavy pressure ends of 8-；9- briquettings；10- confined pressure cylinders；11- displacement transducers；12- metal sleeves；13- heat shrinking sleeves；14- is close
Seal；15- oil inlet pipes；16- loads servo controller；17- reaction frames；18- jack；19- upper flange cover plates；The high-strength spiral shells of 20-
Bolt；21- tops cushion block；22- carbon fiber test specimen decks；23- test specimens；24- bottoms cushion block；25- pressure sensors；26- backing plates；
27- lower flange cover plates；28- delivery ports；29- lower flange rotating bases；30- swingles；31- stepper motors；32- bases；33- goes out
Oilhole；34- bolts；35- deck bolts；36- inlet openings.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
1~Fig. 3 of reference picture, a kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system, including it is steady
Fixed integrally-built main machine frame, for sheared and the test cabinet of seepage tests, by oil pressure cntrol shearing loading device,
The confined pressure servo-control system of test specimen confined pressure is controlled, the rotating device of lower flange rotating base rotation is driven by swingle and is used for
Obtain the CT scan device of test specimen interior three-dimensional image.
Described main machine frame, including base 32 and reaction frame 17.Loading device 18, SERVO CONTROL are placed on reaction frame 17
System 6 and 16, water tank 3 and fuel tank 2；Reaction frame 17 is connected by high-strength bolt 20 with test cabinet, ensures the overall steady of test cabinet
It is qualitative, and test cabinet is placed on the rotating device fixed with the phase of base 32,360 ° of test cabinet is irradiated by CT.
Described test cabinet includes pressure indoor, fluid shear chamber and seepage apparatus, and pressure indoor includes enclosing for carbon fibre material making
Pressure cylinder 10, upper flange cover plate 19, lower flange rotating base 29 and high-strength bolt 20, its annexation are：The confined pressure cylinder 10
It is made up, is embedded in two pieces of flange plates up and down, upper flange cover plate 19 and the lower shoe of reaction frame 17 pass through height of carbon fibre material
Strength bolt 20 is fixed, and lower flange cover plate 27 and lower flange rotating base 29 are fixed by high-strength bolt 20；Fluid shear chamber includes heat and received
Contracting set 13, carbon fiber test specimen deck 22, top cushion block 21, bottom cushion block 24, displacement transducer 11 and very heavy pressure end 8, institute
State and semicircle briquetting 9 connected under the very heavy pressure head of pressure end 8, the semicircle side of briquetting 9 scribbles teflon material, with this reduce with it is upper
Frictional force between portion's cushion block 21, semicircle briquetting 9 passes through upper flange cover plate 19, close by sealing ring 14 through the position of cover plate
Envelope, shearing force is loaded to the left side of test specimen 23.High-temperature-resistant high is used between semicircle briquetting 9 and carbon fiber test specimen deck 22
Glue connects, and the lower end of carbon fiber test specimen deck 22 can allow fluted body metal sleeve 12 to be embedded in, and metal sleeve 12 is embedded in heat shrinking sleeve
In interlayer between 13 and backing plate 26, and it can move straight down, metal sleeve 12 passes through deck bolt 35 and carbon fiber test specimen
Deck 22 is fixed.One hole is arranged at the bottom of carbon fiber test specimen deck 22, displacement transducer 11 is touched test specimen.Tested
When, test specimen 23 is put into carbon fiber test specimen deck 22 first, test specimen 23 is cylinder test specimen, then makes hot receipts with hot hair dryer
Contracting set 13 is close to test specimen 23, and its top of heat shrinking sleeve 13 is stretched out at upper flange cover plate 19, and is fixed by high-strength bolt 20, its
Bottom is stretched into backing plate 26 and fixed by bolt 34 and lower flange rotating base 29, sets sealing ring 14 anti-in heat shrinking sleeve 13
Leakage.Vertical shearing is carried out to the left side of test specimen 23, maximum shear displacement is the 1/10 of piece lengths；Set on the downside of the test specimen of left side
Displacement transducer 11, displacement transducer 11 are placed on backing plate 26, and for measuring shear displacemant, the right side of test specimen has bottom pad
Block 24, top cushion block 21, bottom cushion block 24 are fixed by bolt 34 and backing plate 26, and top cushion block 21 is by being bolted to upper flange
On cover plate 19, cushion block can be pressed on test specimen by swivel bolt, play a part of the fixed right side of test specimen 23.In seepage tests, water
Case 3 is connected with water inlet pipe 4, and the interface being connected with external pressurized device is reserved on water tank 3, can carry out oozing under different hydraulic conditions
Stream experiment, the water side of water inlet pipe 4 are injected in top cushion block 21 and contacted with sample 23, and the fracture surface of seepage port registration coupon 23,
Seepage flow is set to concentrate at the shearing of sample 23.The water that seepage flow goes out flows out to external device by the delivery port 28 in backing plate 26 again, outside
The flow and flow rate for the water that connection device measurement seepage flow goes out, to obtain the seepage characteristic under high-pressure situations during rock shearing.
Described shearing loading device, including servo-controlled vertical jack 18.Very heavy pressure end 8 is in loading servo control
Shearing force is produced to test specimen 23 by semicircle briquetting 9 under the control of device 16 processed.
Described confined pressure servo-control system, including pressure sensor 25, oil pump 1, fuel tank 2 and confined pressure servo controller 6.
Confined pressure servo controller 6 controls the oil pump 1 in fuel tank 2 to extract the oil of high pressure out injection pressure indoor, and rock sample 25 is carried out
Pressurization；Pressure data can be transferred to confined pressure servo controller 14 by pressure sensor 27, and the confined pressure of pressure indoor is entered by feeding back
Row adjustment.
Described rotating device, including lower flange rotating base 29, swingle 30, stepper motor 31.Swingle 30 is with
Flange rotary base 29 is connected, and stepper motor 31 is arranged in base 32, swingle 30 can be controlled to rotate, so that lower flange
Rotating base 29 and its above section rotate, and obtain the scan image of 360 ° of test specimen, the speed of adjustable rotating as needed
Spend to obtain accurate image.
Described CT scan device, including detector and radiographic source, radiographic source produce radioactive ray and pass through above-mentioned test cabinet, profit
With oil and the fabulous penetrability of carbon fibre material, after being scanned to 360 ° of test specimens rotated, the height inside test specimen can be obtained
Clear 3-D view.
Claims (5)
1. a kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system, it is characterised in that：The system bag
Include and stablize integrally-built main machine frame, for being sheared and the test cabinet of seepage tests, loaded by the shearing of oil pressure cntrol
Device, the confined pressure servo-control system for controlling test specimen confined pressure, the rotating device by swingle drive lower flange rotating base rotation
With for obtaining the CT scan device of test specimen interior three-dimensional image；
Described main machine frame includes base and reaction frame, and the rotating device is fixed on the base, and the test cabinet is consolidated
Due on the rotating device, the reaction frame is fixed on the test cabinet, and shearing loading device is placed on the reaction frame
And servo-control system；
Described test cabinet includes pressure indoor, fluid shear chamber and seepage apparatus, and the pressure indoor is located at the outside of fluid shear chamber, described to cut
Cut indoor placement rock sample, the upper end of the rock sample half portion and the action end in contact of shearing loading device, the seepage flow
Device includes water tank, inlet opening and delivery port, and the water in water tank flows into rock sample by inlet opening, by delivery port outflow simultaneously
It is connected to measurement apparatus；Oil pump in fuel tank can extract the oil of high pressure out injection pressure indoor and rock sample is pressurizeed；
Described CT scan device includes radiographic source and detector, and the test cabinet both sides are respectively arranged the radiographic source and detection
Device.
2. the seepage flow of CT real-time three-dimensionals scanning as claimed in claim 1, shearing coupling rock triaxial test system, its feature exist
In：The pressure indoor includes upper flange cover plate, lower flange rotating base, confined pressure cylinder, high-strength bolt；The confined pressure cylinder is by carbon fiber
Material is made, and is embedded in two pieces of flange plates up and down, and upper flange cover plate and reaction frame lower shoe are fixed by high-strength bolt, under
Flange plate and lower flange rotating base are fixed by high-strength bolt.
3. the seepage flow of CT real-time three-dimensionals scanning as claimed in claim 1 or 2, shearing coupling rock triaxial test system, it is special
Sign is：The fluid shear chamber includes heat shrinking sleeve, carbon fiber test specimen deck, cushion block, displacement transducer and pressure head, vertical very heavy
Semicolumn bodily form briquetting is connected under pressure end, connects carbon fiber deck under the semicolumn bodily form briquetting, the left side of test specimen is put
In in above-mentioned carbon fiber deck, the briquetting passes through above-mentioned upper flange cover plate, shearing force is loaded to the left side of test specimen, through lid
The position of plate is sealed by sealing ring, and the carbon fiber deck bottom connection displacement transducer is used to measure shear displacemant；Test specimen
Right side respectively has a cushion block up and down, and its middle and lower part cushion block is fixed, and top cushion block is rotated by being bolted on upper flange cover plate
Cushion block can be pressed on test specimen by bolt, play a part of fixed test specimen right side；The heat shrinking sleeve of test specimen is wrapped up, its top is from upper
To stretch out at flange plate, and fixed by high-strength bolt, heat shrinking sleeve bottom closes and is connected with lower flange cover plate by backing plate,
Connecting portion sets O-ring seal leakproof.
4. the seepage flow of CT real-time three-dimensionals scanning as claimed in claim 1 or 2, shearing coupling rock triaxial test system, it is special
Sign is：Described confined pressure servo-control system includes pressure sensor, oil pump, fuel tank and confined pressure servo controller, described to enclose
The oil pump in servo controller control fuel tank is pressed to extract the oil of high pressure out injection pressure indoor, the pressure sensor can be by number pressure
According to being transferred to confined pressure servo controller.
5. the seepage flow of CT real-time three-dimensionals scanning as claimed in claim 1 or 2, shearing coupling rock triaxial test system, it is special
Sign is：Described rotating device includes lower flange rotating base, swingle and stepper motor, and the lower flange rotating base leads to
Cross swingle to be connected with stepper motor, the stepper motor drives swingle rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720544392.7U CN206891877U (en) | 2017-05-17 | 2017-05-17 | A kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720544392.7U CN206891877U (en) | 2017-05-17 | 2017-05-17 | A kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system |
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| Publication Number | Publication Date |
|---|---|
| CN206891877U true CN206891877U (en) | 2018-01-16 |
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| CN201720544392.7U Expired - Fee Related CN206891877U (en) | 2017-05-17 | 2017-05-17 | A kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036911A (en) * | 2017-05-17 | 2017-08-11 | 绍兴文理学院 | A kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system |
| CN109406291A (en) * | 2018-11-08 | 2019-03-01 | 中国矿业大学 | A kind of saturating X-ray test device and method being crushed in situ for simulation rock |
| CN111948065A (en) * | 2020-09-04 | 2020-11-17 | 北京理工大学 | High-temperature in-place loading CT (computed tomography) testing system and method based on laboratory X-ray source |
| CN113640149A (en) * | 2021-08-30 | 2021-11-12 | 哈尔滨工业大学 | Composite material in-situ shearing loading equipment suitable for synchrotron radiation CT |
| WO2022056944A1 (en) * | 2020-09-16 | 2022-03-24 | 东北大学 | Rock true triaxial testing system and method integrated with microscopic ct online scanning |
| CN117268938A (en) * | 2023-11-21 | 2023-12-22 | 华南理工大学 | Triaxial test device and test method suitable for CT scanning |
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2017
- 2017-05-17 CN CN201720544392.7U patent/CN206891877U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036911A (en) * | 2017-05-17 | 2017-08-11 | 绍兴文理学院 | A kind of seepage flow of CT real-time three-dimensionals scanning, shearing coupling rock triaxial test system |
| CN109406291A (en) * | 2018-11-08 | 2019-03-01 | 中国矿业大学 | A kind of saturating X-ray test device and method being crushed in situ for simulation rock |
| CN111948065A (en) * | 2020-09-04 | 2020-11-17 | 北京理工大学 | High-temperature in-place loading CT (computed tomography) testing system and method based on laboratory X-ray source |
| CN111948065B (en) * | 2020-09-04 | 2024-04-30 | 北京理工大学 | High Wen Zaiwei loading CT test system based on laboratory X-ray source and method thereof |
| WO2022056944A1 (en) * | 2020-09-16 | 2022-03-24 | 东北大学 | Rock true triaxial testing system and method integrated with microscopic ct online scanning |
| CN113640149A (en) * | 2021-08-30 | 2021-11-12 | 哈尔滨工业大学 | Composite material in-situ shearing loading equipment suitable for synchrotron radiation CT |
| CN113640149B (en) * | 2021-08-30 | 2024-01-30 | 哈尔滨工业大学 | Composite material in-situ shear loading equipment suitable for synchrotron radiation CT |
| CN117268938A (en) * | 2023-11-21 | 2023-12-22 | 华南理工大学 | Triaxial test device and test method suitable for CT scanning |
| CN117268938B (en) * | 2023-11-21 | 2024-02-20 | 华南理工大学 | Triaxial test device and test method suitable for CT scanning |
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