CN206891851U - A kind of high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test system - Google Patents

A kind of high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test system Download PDF

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Publication number
CN206891851U
CN206891851U CN201720544167.3U CN201720544167U CN206891851U CN 206891851 U CN206891851 U CN 206891851U CN 201720544167 U CN201720544167 U CN 201720544167U CN 206891851 U CN206891851 U CN 206891851U
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pressure
temperature
test
shearing
test specimen
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CN201720544167.3U
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Chinese (zh)
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李博
赵志宏
杜时贵
黄嘉伦
金栋
周楷峰
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University of Shaoxing
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University of Shaoxing
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Abstract

A kind of high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test system, including stablize integrally-built main machine frame, the test cabinet for carrying out high temperature down cut and seepage tests, by the shearing loading device of oil pressure cntrol, the temperature and pressure servo-control system of control test specimen temperature and 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, the rotating device is fixed on the base, the test cabinet is fixed on the rotating device, and the reaction frame is fixed on the test cabinet, and shearing loading device and temperature and pressure servo-control system are placed on the reaction frame.The utility model efficiently solves the problem of rock sample confined pressure and temperature control, and realizes and obtain the 3-D scanning image inside test specimen by CT devices during high temperature, seepage flow and shearing test.

Description

A kind of high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test System
Technical field
The utility model belongs to Geotechnical Engineering field, is related to a kind of rock high temperature, seepage flow, shearing coupling test system, tool A kind of CT real-time three-dimensionals scanning high temperature, seepage flow, shearing coupling rock triaxial test system for body.
Background technology
The great ground work of the country such as underground sequestration of the geological disposal in such as high radioactive nucleus waste, carbon dioxide in recent years Occur some complicated matter of science and technologys in journey project, an urgent demand Geotechnical Engineering worker is to rock under complicated coupling environment The mechanics and engineering properties of stone carry out deeper into research to find rational engineering scheme.And temperature, seepage flow, answer couple of force Conjunction problem is one of key problem therein, is badly in need of the corresponding rock test system of structure and method of testing accurately assesses rock The multi- scenarios method characteristic of stone.Failure by shear is a kind of common form of rock mass damage, is one during engineering long-time stability are assessed Individual key factor, consider that the effect of shearing is particularly significant in multi- scenarios method test.Substantial amounts of e measurement technology can only obtain at present The deformation-failure character of surface of test piece, and CT scan technology can then carry out comprehensive monitoring to the structure change inside test specimen, The Mechanism of Deformation And Failure of rock is understood from microcosmic angle, so as to deeper into the multi- scenarios method characteristic for understanding rock.It is right at present Axle presses the rock coupling characteristic test method under being acted on confined pressure more ripe, but how shearing is considered in environment is coupled Act on and be applied to CT scan and then also face great difficulty.
The content of the invention
In order to overcome prior art can not realize shear action in the coupling environment in the case of high temperature, seepage flow and shearing Deficiency, the utility model provide a kind of high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test system, The problem of efficiently solving rock sample confined pressure and temperature control, and realize and pass through during high temperature, seepage flow and shearing test CT devices obtain the 3-D scanning image inside test specimen.
Technical scheme is used by the utility model solves its technical problem:
A kind of high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test system, including stable overall knot The main machine frame of structure, the test cabinet for carrying out high temperature down cut and seepage tests, the shearing loading device by oil pressure cntrol, use In the temperature and pressure servo-control system of control test specimen temperature and confined pressure, the rotating dress by swingle drive lower flange rotating base rotation Put and 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, 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 temperature and pressure 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;Fuel tank is connected so as to form a temperature adjustment cyclic system by oil inlet pipe and flowline with pressure indoor System, confined pressure is provided while the oil of injection HTHP heats to rock sample into the pressure indoor;
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 the semicolumn bodily form briquetting Left side be placed in the carbon fiber deck, the briquetting passes through the 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, the 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.
Described temperature and pressure servo-control system includes oil temperature sensor, pressure sensor, oil pump, fuel tank, heater and temperature Servo controller is pressed, the temperature and pressure servo controller can control the heater in fuel tank to adjust the oil temperature in fuel tank, the oil Case is connected so as to form a temperature adjustment circulatory system by oil inlet pipe and flowline with pressure indoor, is injected into the pressure indoor high The oil of warm high pressure provides confined pressure while heating to rock sample;Oil temperature sensor, pressure sensor can be by temperature, pressure Data control while being transferred to temperature and pressure servo controller, real time temperature and confined pressure.
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) shearing test under high temperature and seepage flow coupling environment is realized, it is more residing for the subterranean body of true simulation deep Field coupling environment;
2) temperature and pressure Servocontrol device can control confined pressure and temperature simultaneously, so as to avoid setting electric heating in test cabinet side wall Silk, is easy to obtain high-precision CT scan image;
3) 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- heaters;5- water inlet pipes;6- flowlines;7- temperature and pressure SERVO CONTROLs Device;8- fuel feed holes;The very heavy pressure ends of 9-;10- briquettings;11- confined pressure cylinders;12- displacement transducers;13- metal sleeves;14- oil temperatures Sensor;15- heat shrinking sleeves;16- sealing rings;17- oil inlet pipes;18- loads servo controller;19- reaction frames;20- jack; 21- upper flange cover plates;22- high-strength bolts;23- tops cushion block;24- carbon fiber test specimen decks;25- test specimens;26- bottoms cushion block; 27- pressure sensors;28- backing plates;29- lower flange cover plates;30- delivery ports;31- lower flange rotating bases;32- swingles;33- Stepper motor;34- bases;35- oil outlets;36- bolts;37- deck bolts;38- 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 high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test system, Including stablizing integrally-built main machine frame, the test cabinet for carrying out high temperature down cut and seepage tests, by oil pressure cntrol Shear loading device, the temperature and pressure servo-control system of control test specimen temperature and confined pressure, lower flange rotating base is driven by swingle The rotating device of rotation and for obtaining the CT scan device of test specimen interior three-dimensional image.
Described main machine frame, including base 34 and reaction frame 19.Loading device 20, SERVO CONTROL are placed on reaction frame 19 System 7 and 18, water tank 3 and fuel tank 2;Reaction frame 19 is connected by high-strength bolt 22 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 34,360 ° 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 11, upper flange cover plate 21, lower flange rotating base 31 and high-strength bolt 22, its annexation are:The confined pressure cylinder 11 It is made up, is embedded in two pieces of flange plates up and down, upper flange cover plate 21 and the lower shoe of reaction frame 19 pass through height of carbon fibre material Strength bolt 22 is fixed, and lower flange cover plate 29 and lower flange rotating base 31 are fixed by high-strength bolt 22;Fluid shear chamber includes heat and received Contracting set 15, carbon fiber test specimen deck 24, top cushion block 23, bottom cushion block 26, displacement transducer 12 and very heavy pressure end 9, institute State and semicircle briquetting 10 connected under the very heavy pressure head of pressure end 9, the semicircle side of briquetting 10 scribbles teflon material, with this reduce with Frictional force between top cushion block 23, semicircle briquetting 10 passes through upper flange cover plate 21, through the position of cover plate by sealing ring 16 Sealing, shearing force is loaded to the left side of test specimen 25.High temperature resistant is used between semicircle briquetting 10 and carbon fiber test specimen deck 24 High-strength glue connection, the lower end of carbon fiber test specimen deck 24 can allow fluted body metal sleeve 13 to be embedded in, and metal sleeve 13 is embedded in hot receipts In interlayer between contracting set 15 and backing plate 28, and it can move straight down, metal sleeve 13 passes through deck bolt 37 and carbon fiber Test specimen deck 24 is fixed.One hole is arranged at the bottom of carbon fiber test specimen deck 24, displacement transducer 12 is touched test specimen.Carry out During experiment, test specimen 25 is put into carbon fiber test specimen deck 24 first, test specimen 25 is cylinder test specimen, is then made with hot hair dryer Heat shrinking sleeve 15 is close to test specimen 25, and its top of heat shrinking sleeve 15 is stretched out at upper flange cover plate 21, and solid by high-strength bolt 22 Fixed, its underpart is stretched into backing plate 28 and fixed by bolt 36 and lower flange rotating base 31, and sealing ring is set in heat shrinking sleeve 15 16 leakproofs.Vertical shearing is carried out to the left side of test specimen 25, maximum shear displacement is the 1/10 of piece lengths;On the downside of the test specimen of left side Displacement transducer 12 is set, and displacement transducer 12 is placed on backing plate 28, for measuring shear displacemant, under the right side of test specimen has Portion's cushion block 26, top cushion block 23, bottom cushion block 26 are fixed by bolt 26 and backing plate 28, top cushion block 23 by being bolted on On flange plate 21, cushion block can be pressed on test specimen by swivel bolt, play a part of the fixed right side of test specimen 24.Seepage tests In, the water in water tank 3 flows into water inlet pipe 5 and penetrates into rock sample 25 by inlet opening 38, and water flows from the delivery port 30 on backing plate 28 Go out, be connected to measurement apparatus, seepage tests analysis can be carried out.The interface being connected with external pressurized device is reserved on water tank 3, can Carry out the seepage tests under different hydraulic conditions.
Described shearing loading device, including servo-controlled vertical jack 20.Very heavy pressure end 9 is in loading servo control Shearing force is produced to test specimen 25 by semicircle briquetting 10 under the control of device 18 processed.
Described temperature and pressure servo-control system, including oil temperature sensor 14, pressure sensor 27, oil pump 1, fuel tank 2, heating Device 4 and temperature and pressure servo controller 7.Temperature and pressure servo controller 7 can control the heater 4 in fuel tank 2 to adjust the oil in fuel tank 2 Temperature, oil pump 1, which can extract oil out, injects pressure indoor, and fuel tank 2 is connected so as to form one by oil inlet pipe 17 and flowline 6 with pressure indoor The individual temperature adjustment circulatory system, the oil of the interior injection HTHP of pressure indoor provide confined pressure while heating to rock sample 25;Oil Temperature, pressure data can be transferred to temperature and pressure servo controller 14, temperature and pressure servo controller by temperature sensor 14, pressure sensor 27 14, by controlling heater 4 and oil pump 1 to adjust the temperature of oiling and flow velocity, reach the mesh controlled while temperature and confined pressure 's.
Described rotating device, including lower flange rotating base 31, swingle 32, stepper motor 33.Swingle 32 is with Flange rotary base 31 is connected, and stepper motor 31 is arranged in base 34, swingle 32 can be controlled to rotate, so that lower flange Rotating base 31 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 the 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 high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test system, it is characterised in that:Including Stablize integrally-built main machine frame, the test cabinet for carrying out high temperature down cut and seepage tests, the shearing by oil pressure cntrol Loading device, the temperature and pressure servo-control system for controlling test specimen temperature and confined pressure, by swingle drive lower flange rotating base The rotating device of rotation and 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 With temperature and pressure 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;Fuel tank is connected so as to form a temperature adjustment circulatory system by oil inlet pipe and flowline with pressure indoor, to Confined pressure is provided while the oil of injection HTHP heats to rock sample in the pressure indoor;
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 high temperature of CT real-time three-dimensionals scanning as claimed in claim 1, seepage flow, shearing coupling rock triaxial test system, its It is characterised by:The pressure indoor includes upper flange cover plate, lower flange rotating base, confined pressure cylinder, high-strength bolt;The confined pressure cylinder by Carbon fibre material is made, and is embedded in two pieces of flange plates up and down, upper flange cover plate and reaction frame lower shoe pass through high-strength bolt Fixed, lower flange cover plate and lower flange rotating base are fixed by high-strength bolt.
3. the high temperature of CT real-time three-dimensionals scanning as claimed in claim 1 or 2, seepage flow, shearing coupling rock triaxial test system, It is characterized in that:The fluid shear chamber includes heat shrinking sleeve, carbon fiber test specimen deck, cushion block, displacement transducer and pressure head, vertically Semicolumn bodily form briquetting is connected under very heavy pressure end, carbon fiber deck, a left side half for test specimen are connected under above-mentioned semicolumn bodily form briquetting Portion is placed in above-mentioned carbon fiber deck, and above-mentioned briquetting passes through above-mentioned upper flange cover plate, is loaded shearing force to the left side of test specimen, is worn The position for crossing cover plate is sealed by sealing ring, and above-mentioned carbon fiber deck bottom connection displacement transducer is used to measure shear displacemant;Examination The right side of part respectively has a cushion block up and down, and its middle and lower part cushion block is fixed, top cushion block by being bolted on upper flange 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 heat shrinking sleeve of test specimen, its top Stretch out at upper flange cover plate, and fixed by high-strength bolt, heat shrinking sleeve bottom closes and passes through backing plate with lower flange cover plate Connection, connecting portion set O-ring seal leakproof.
4. the high temperature of CT real-time three-dimensionals scanning as claimed in claim 1 or 2, seepage flow, shearing coupling rock triaxial test system, It is characterized in that:Described temperature and pressure servo-control system include oil temperature sensor, pressure sensor, oil pump, fuel tank, heater and Temperature and pressure servo controller, the temperature and pressure servo controller can control the heater in fuel tank to adjust the oil temperature in fuel tank, described Fuel tank is connected so as to form a temperature adjustment circulatory system by oil inlet pipe and flowline with pressure indoor, is injected into the pressure indoor The oil of HTHP provides confined pressure while heating to rock sample;Oil temperature sensor, pressure sensor can be by temperature, pressures Force data is transferred to temperature and pressure servo controller.
5. the high temperature of CT real-time three-dimensionals scanning as claimed in claim 1 or 2, seepage flow, shearing coupling rock triaxial test system, It is characterized in that:Described rotating device includes lower flange rotating base, swingle and stepper motor, and the lower flange rotates bottom Seat is connected by swingle with stepper motor, and the stepper motor drives swingle rotation.
CN201720544167.3U 2017-05-17 2017-05-17 A kind of high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test system Expired - Fee Related CN206891851U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107084876A (en) * 2017-05-17 2017-08-22 绍兴文理学院 A kind of high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test system
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
CN112067458A (en) * 2020-09-16 2020-12-11 东北大学 Rock true triaxial test system and method integrating microcosmic CT (computed tomography) online scanning
CN112964621A (en) * 2021-02-19 2021-06-15 中国地质大学(武汉) Rock-soil body temperature-seepage coupling device for industrial CT 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

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107084876A (en) * 2017-05-17 2017-08-22 绍兴文理学院 A kind of high temperature of CT real-time three-dimensionals scanning, seepage flow, shearing coupling rock triaxial test system
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
CN112067458A (en) * 2020-09-16 2020-12-11 东北大学 Rock true triaxial test system and method integrating microcosmic CT (computed tomography) online scanning
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
CN112964621A (en) * 2021-02-19 2021-06-15 中国地质大学(武汉) Rock-soil body temperature-seepage coupling device for industrial CT 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

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