CN109443928A - The mating portable rock-soil mechanics real-time loading experimental rig of Industrial CT Machine - Google Patents
The mating portable rock-soil mechanics real-time loading experimental rig of Industrial CT Machine Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000006073 displacement reaction Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 239000002828 fuel tank Substances 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 239000004575 stone Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 8
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- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 21
- 239000011435 rock Substances 0.000 abstract description 8
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- 238000012512 characterization method Methods 0.000 abstract 1
- 238000002591 computed tomography Methods 0.000 description 32
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
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- 239000004411 aluminium Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
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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
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of 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
- G01N3/12—Pressure testing
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- 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
- G01N2203/0019—Compressive
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- 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
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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- 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
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- Life Sciences & Earth Sciences (AREA)
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The present invention provides a kind of mating portable rock-soil mechanics real-time loading experimental rig of Industrial CT Machine, belongs to technique of rock-soil mechanical test field.Including axis pressure system, confining pressure system and physical quantity system, axis pressure system includes rigid posts, upper beam, lower beam, attaching nut, piston, rigid transmission rod and data conductor, confining pressure system includes that pressure chamber, pressurization generation pipe, sample water drain, pressure exhaust pipe, permeable stone, oil filler pipe, increase device, fuel tank, water tank, tubing valve, pressurization mouth valve, water tank valve and burp valve, physical quantity system include pressure sensor, load controller, displacement sensor and data conductor.These three systems are placed on CT turntable, issue X-ray by radiographic source, are penetrated pressure chamber's barrel and sample, are received by a detector, and the reconstruct that computer carries out sample precise image is transferred to.Which solves the visualizations of Rock And Soil sample inner constructional form during load deflection and digitlization characterization problems.
Description
Technical field
The present invention relates to technique of rock-soil mechanical test fields, particularly relate to a kind of mating portable rock-soil mechanics of Industrial CT Machine
Real-time loading experimental rig.
Background technique
Indoor triaxial test is to study the best means of Rock And Soil deformation & damage system under stress, by being arranged in
Multiple sensors on testing machine obtain the stress strain response of reflection sample macromechanical property, but can not know sample
Internal mechanism of deformation and cracking.For the defect of three-axis tester, forefathers successively use electron microscope, sound emission and X ray CT
Three kinds of methods are applied in ground test.However, scanning electron microscope is obvious by mineral grain effects, it can only be real-time
It observes the deformation of specimen surface, and requires the sample of test smaller (full-size 5cm), do not have representativeness；Sound
Lift-off technology is mainly by recording the Elastic wave that a part of rock stress concentration region energy quick release generates come inverting examination
The rupture mechanism of sample, but the indexs such as sound emission frequency, amplitude of vibration and the characteristic parameter of crackle during specimen broke are difficult to set up
Relationship, and test process is big by outside noise interference effect, refutation process has uncertainty more.
Computed tomography (CT) can carry out quantitative study to characteristics certain in detected body tomography, due to can be with
It carries out Multi Slice Mode and has many advantages, such as non-destructive testing and the attention by domestic and international ground circle.Traditional CT loading device is mostly flat
It is placed in Medical CT machine and is scanned test, however medical X-ray CT machine ray energy is small (80~140Kev), it cannot be to big ruler
The ground sample of degree carries out fine scanning, and also faces very big difficulty in terms of the dynamic evolution identification of crackle.Add outer, biography
The mating loading equipemtn of the Medical CT of system mostly uses alloy aluminium to make triaxial cell, alloy aluminum material to the absorption of X-ray compared with
By force, the deficiencies such as the penetration power of X-ray used in Medical CT is weak in addition, resolution ratio is low cause to obtain the crackle in sample loading procedure
Evolution Development rule becomes very difficult.Along with the successful development of industry CT and high energy acclerator CT, Rock And Soil is in the field of force
It acts on the fine scanning that lower internal rupture develops to be possibly realized, develops special three axis loading device of sample, carry out sample testing
Scanning when loading in the process is to recognize the emphasis of deformation fracture under geologic body complex stress condition, therefore develop high-energy work
The matched rock-soil mechanics loading device of industry CT machine is the key that success of the test.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of mating portable rock-soil mechanics real-time loading examinations of Industrial CT Machine
Experiment device.
The device includes that axis presses system, confining pressure system and physical quantity system,
Axis pressure system includes that rigid posts, upper beam, lower beam, upright nut, piston, rigid transmission rod and data are led
Line, rigid posts are fixed with upper beam and lower beam by upright nut, and piston is via pressure sensor and rigid power transmission
Bar is connected, and rigid transmission rod pressurizes in displacement sensor and then to sample load action；
Confining pressure system includes pressure chamber, pressurization generation pipe, sample water drain, pressure exhaust pipe, permeable stone, oil filler pipe, increasing
Add device, fuel tank, water tank, tubing valve, pressurization mouth valve, water tank valve and burp valve, is pressure outside pressure chamber
Room barrel, pressurization generates pipe, oil filler pipe passes through balancing gate pit's top board portion and enters in pressure chamber, and sample water drain, pressure exhaust pipe are worn
Excess pressure room bottom enters in pressure chamber, is connect with lower beam by lower beam screw rod at the top of pressure chamber, and be equipped with lower beam spiral shell
Mother is fixed, and pressure chamber bottom is connected with horizonal base plate by bottom plate screw rod, and is equipped with bottom plate nut and is fixed, pressure chamber top and lower cross
Beam is connected closed by upper anaerobic copper sealing ring, and pressure chamber bottom and horizonal base plate are connected closed, sample by lower anaerobic copper sealing ring
Permeable stone is arranged in lower part, and permeable stone is placed on cushion block, and pressurization generates pipe and connects booster, and pressurization generates to be set between pipe and booster
Pressurization mouth valve is set, oil filler pipe connects fuel tank, and tubing valve is arranged between oil filler pipe and fuel tank, and sample water drain connects water storage
Case is arranged water tank valve, burp valve is arranged on pressure exhaust pipe between sample water drain and water tank；
Physical quantity system includes pressure sensor, load controller, displacement sensor and data conductor, stress sensing
The data of device and displacement sensor are recorded by load controller and displacement controller respectively, and displacement sensor is passed through by data conductor
Rigid transmission rod, is placed on lower beam.
Axis pressure system, confining pressure system and physical quantity system are placed on CT turntable, and radiographic source issues X-ray and penetrates pressure
Room barrel and sample, X-ray are received by a detector.
Do not apply confining pressure when uniaxial test, pressurization mouth valve, burp valve and tubing valve are in the open state；It carries out
When triaxial test, specimen enclosure is placed in pressure chamber, and from fuel tank, into pressure chamber, filling liquid closes tubing valve to being full of, and increases
Depressor is pumped into confining pressure into pressure chamber, closes pressurization mouth valve when reaching default pressure, when off-test open pressurization mouth valve,
The indoor oil liquid of pressure is discharged for tubing valve and burp valve.
The device relative to X-ray be it is transparent, when X-ray passes through pressure chamber, ray energy loss is small, can obtain in real time
Clear internal image in deformation process of materialsing.
Pressure chamber is made of the transparent aeronautical glasses cylinder of high-strength low-density, while pressure chamber applies confining pressure, is also filled
Work as counterforce structure.
The advantageous effects of the above technical solutions of the present invention are as follows:
The device realizes rock during triaxial test by the high-energy X-rays and high-precision rotary turntable of Industrial CT Machine
The high-precision real time scan of soil-structure interactions, study rock soil medium under various stress states underbead crack germinating, bifurcated, development, break
The Evolution for splitting, unloading overall process prompts the failure mechanism of rock soil medium from meso-scale.Portable mating three axis of CT machine
Loading system is made of nonmetallic materials, and axis splenium is divided into system and provides xial feed, and material is nylon glass fiber reinforcement tree
Rouge (PA66+GF30).Triaxial cell is the core component of whole system, different from traditional upright of frame formula loading device,
Pressure chamber's barrel role-taking is in the counter-force on sample, it can bear biggish xial feed and confining pressure, and X-ray penetrates pressure chamber
Chamber wall is received by a detector with sample, it will the decaying for leading to ray energy impacts imaging, wears to reduce X-ray
Influence of the ray attenuation to test result when thoroughly, pressure chamber's aeronautical glasses cylinder transparent using high-strength low-density, transparent material
Visualization and digitlization that sample deformation is regarded in loading procedure may be implemented, sample deformation-failure character is thin in solution loading procedure
Description problem is seen, aeronautical glasses not only have excellent optical property, heat resistance, ageing resistance, and have high strength,
Resistance to compression draws performance prominent.Using accurate displacement and load measurement device, macroscopic properties is consistent with inner scanning when realizing test
Test data sheet, loading device and displacement control system are manipulated using intelligent wireless, connection system are measured when solving test and is existed
Route on CT turntable in rotary course winds problem.
Detailed description of the invention
Fig. 1 is the mating portable rock-soil mechanics real-time loading experimental rig working principle signal of Industrial CT Machine of the invention
Figure；
Fig. 2 is the mating portable rock-soil mechanics real-time loading experimental rig sectional view of Industrial CT Machine of the invention；
Fig. 3 is pressure chamber's sectional view of the invention.
Wherein: 1- rigid posts；2- upper beam；3- lower beam；4- horizonal base plate；5- upright nut；6- lower beam screw rod；
7- lower beam nut；8- bottom plate screw rod；9- bottom plate nut；The upper anaerobic copper sealing ring of 10-；11- pressure sensor；Anaerobic under 12-
Copper sealing ring；13- sample；14- displacement sensor；15- piston；16- rigidity transmission rod；17- pressurization generates pipe；18- sample row
Water pipe；19- pressure exhaust pipe；20- permeable stone；21- oil filler pipe；The pressure chamber 22-；The pressure chamber 23- barrel；At the top of the pressure chamber 24-；
The pressure chamber 25- bottom；26- load controller；27- booster；28- fuel tank；29- water tank；30- cushion block；31- tubing valve；
32- pressurization mouth valve；33- water tank valve；34- burp valve；35- data conductor；36- displacement display；37-CT turns
Platform；38- radiographic source；39- detector；40-X ray.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of mating portable rock-soil mechanics real-time loading experimental rig of Industrial CT Machine.
As shown in Fig. 2, the device includes that axis presses system, confining pressure system and physical quantity system,
Axis pressure system includes rigid posts 1, upper beam 2, lower beam 3, upright nut 5, piston 15,16 and of rigid transmission rod
Data conductor 35, rigid posts 1 are fixed with upper beam 2 and lower beam 3 by upright nut 5, and piston 15 is passed via pressure
Sensor 11 is connected with rigid transmission rod 16, and rigid transmission rod 16 adds in displacement sensor 14 and then to sample 13 load action
Pressure；
Confining pressure system include pressure chamber 22, pressurization generate pipe 17, sample water drain 18, pressure exhaust pipe 19, permeable stone 20,
Oil filler pipe 21 increases device 27, fuel tank 28, water tank 29, tubing valve 31, pressurization mouth valve 32, water tank valve 33 and exhaust
Mouth valve 34, as shown in figure 3, being pressure chamber's barrel 23 outside pressure chamber 22, pressurization generates pipe 17, oil filler pipe 21 passes through pressure chamber
Top plate portion 24 enters in pressure chamber 22, and sample water drain 18, pressure exhaust pipe 19 pass through pressure chamber bottom 25 and enter pressure chamber 22
Interior, 24 are connect with lower beam 3 by lower beam screw rod 6 at the top of pressure chamber, and are equipped with lower beam nut 7 and are fixed, pressure chamber bottom
25 and horizonal base plate 4 connected by bottom plate screw rod 8, and it is fixed to be equipped with bottom plate nut 9, at the top of pressure chamber 24 and lower beam 3 by upper nothing
Oxygen copper sealing ring 10 is connected closed, and pressure chamber bottom 25 and horizonal base plate 4 are connected closed, sample 13 by lower anaerobic copper sealing ring 12
Permeable stone 20 is arranged in lower part, and permeable stone 20 is placed on cushion block 30, and pressurization generates pipe 17 and connects booster 27, and pressurization generates 17 He of pipe
Setting pressurization mouth valve 32, oil filler pipe 21 connect fuel tank 28, oil pipe are arranged between oil filler pipe 21 and fuel tank 28 between booster 27
Valve 31, sample water drain 18 connect water tank 29, and water tank valve 33 is arranged between sample water drain 18 and water tank 29, adds
Burp valve 34 is set on pressure tracheae 19；
Physical quantity system includes pressure sensor 11, load controller 26, displacement sensor 14 and data conductor 35,
The data of strain gauge 11 and displacement sensor 14 are recorded by load controller 26 and displacement controller 36 respectively, displacement sensing
Device 14 passes through rigid transmission rod 16 by data conductor 35, is placed on lower beam 3.
As shown in Figure 1, axis pressure system, confining pressure system and physical quantity system are placed on CT turntable 37, radiographic source 38 is sent out
X-ray 40 penetrates pressure chamber's barrel 23 and sample 13 out, and X-ray 40 is received by detector 39.
The device does not apply confining pressure in uniaxial test, at pressurize mouth valve 32, burp valve 34 and tubing valve 31
In opening state；Carry out triaxial test when, sample 13 encapsulation be placed in pressure chamber 22, from fuel tank 28 into pressure chamber 22 filling liquid
To being full of, tubing valve 31 is closed, booster 27 is pumped into confining pressure into pressure chamber 22, and pressurization mouth valve is closed when reaching default pressure
Door 32 opens pressurization mouth valve 32, tubing valve 31 and burp valve 34 when off-test, the oil liquid in pressure chamber 22 is arranged
Out.
The principle of device are as follows: during ground sample testing, whole device is put on CT machine turntable, the list of sample is carried out
Axis or triaxial test, while x-ray source issues the X-ray of high-energy, high-energy X-ray penetrates pressure chamber's chamber wall and sample,
Transmitted ray is received by detector, to realize the high-precision real time scan in sample loading procedure.Rupture is all geologic bodies
Presentation under mechanical function, rock soil medium deformation failure are accompanied with the development and evolution of crackle, by high energy CT at
As system can clearly obtain the evolutionary process of sample deformation rupture；Since pressure chamber is more advantageous to made of transparent material
The gross fracture form of the macro adjustments and controls of test process, sample can also be clearly visible；Accurate displacement and load are surveyed
The real-time test data sheet of macroscopic properties and interior scanning consistency when test may be implemented in amount device.Using high energy CT machine and cooperate just
Taking formula rock-soil mechanics loading device, not only available sample carefully sees deformation behaviour, while obtaining macroscopic deformation, displacement, the axis of sample
To the overall processes data such as load, confining pressure, hydraulic pressure.When test, system is pressed to provide axis pressure by axis, confining pressure system provides confining pressure, whole
A experimental rig is in the scanning of high energy CT radioactive source, by sample high-precision rotary and high energy CT scan imaging system,
Sample interior three-dimensional structure can be obtained, the evolution of ground deformation fracture in any time test specimen is obtained from any angle
Journey；Meanwhile macroscopic deformation, displacement, xial feed of sample etc. can obtain overall process data, cooperation by high-precision measurement system
Portable tri- axis loading system of high energy CT, Cracks Evolution process inside the ground transparent Observable as glass, realizes examination
Test the holographic digital visual of overall process.
It is explained combined with specific embodiments below.
In the specific application process, piston 15 is jack piston in axis pressure system, and piston 15 is placed on upper beam 2,
2 lower part of upper beam is connect with pressure sensor 11, and connects rigid transmission rod 16, and rigid transmission rod 16 is using accurate guiding dress
Set, the unbiased downlink of pressure head when guarantee test, rigid transmission rod 16 connects lower beam 3, and with the indoor displacement sensor of pressure
14 are connected.Jack builder's tonnage 10t, the load of liquid piston 15 is controlled using hydraulic efficiency servo-valve in real time, and piston 15 designs
Diameter 35mm, stroke 160mm, piston area 9.62mm2, 13 full-size of sample is 50mm × 100mm cylindrical, passes to sample
Axial compressive force on 13 is 100KN, and pressure sensor 11 passes through piston 5 and is connected with load controller 26, and controller uses liquid crystal
It has been shown that, force value are accurate to 0.001KN, can be reserved for 100 groups of test datas, are wirelessly driven using battery, super long standby time, battery can
With replacement.
Pressure chamber top 24 is connect with lower beam 3 by lower beam screw rod 6 in confining pressure system, and is equipped with lower beam nut 7
Fixed, pressure chamber bottom 25 is connected with horizonal base plate 4 by lower anaerobic copper sealing ring 12, among pressure chamber 22 and lower beam 3 by
Upper anaerobic copper sealing ring 10 connects；Pressure chamber 22 is shaped by the high-strength transparence aeronautical glasses once-cast specially made, aviation
Glass transparent degree is excellent, light-weight, and density is the half of simple glass, is approximately the 30% of aluminium alloy, stretch-proof, impact resistance
It is good.The selection of pressure chamber's material and parameter designing are the key problems of whole device, and the counter-force during testing is by pressure chamber cylinder
Wall 23 undertakes, and 23 thickness 8mm of design pressure room barrel, tensile strength is up to 200KN, and the confining pressure that can be born is 20MPa.It is uniaxial
Confining pressure is not added when test, pressurization mouth valve 32, burp valve 34, tubing valve 31 are in the open state；When triaxial test, examination
The encapsulation of sample 13 is placed in pressure chamber 22, and from fuel tank 28, into pressure chamber 22, until being full of, closing tubing valve 31 increases filling liquid
The pump-in pressure into pressure chamber 22 of device 27, closes pressurization mouth valve 32 when reaching default pressure, when off-test opens pressurization mouth
The indoor oil liquid of pressure is discharged for valve 32, tubing valve 31, burp valve 34.
High-precision pressure sensor 11 acts on sample during measuring uniaxial or triaxial test in physical quantity system
Axial compressive force on 13, the axial deformation of highly sensitive 14 test specimens 13 of displacement sensing tolerance, and recorded by load controller 26.Examination
13 radial deformation of sample is received by CT machine detector, is obtained using restructing algorithm accurately image measurement, therefore system is not to radial deformation
It is recorded.
The device concrete application process is as follows:
1. specimen enclosure.Unscrewing the bottom plate nut 9 at pressure chamber bottom 25 and horizonal base plate 4 will try according to test requirements document
Sample is placed on cushion block 30 (triaxial test sample is by the pyrocondensation seal of tube).
2. sample testing.After the completion of specimen enclosure, the bottom plate nut 9 at pressure chamber bottom 25 and horizonal base plate 4 is tightened, it will
Whole device is put on CT turntable 37, and directly by 15 hierarchical loading of piston, every level-one load carries out a CT for uniaxial compression test
Scanning；If carrying out the three axis real time scans test of sample, open tubing valve 31, from fuel tank 28 through oil filler pipe 21 to pressure chamber 22
Filling liquid closes tubing valve 31, burp valve 34 full of after liquid, opens pressurization mouth valve 32, from increase device 27 to pressure chamber
Interior pump-in pressure closes pressurization mouth valve 32 to reach expected confining pressure, and by 15 hierarchical loading of piston, every level-one load carries out primary
CT scan, the X-ray 40 that radiographic source 38 issues are received by detector 39.
3. unloading sample.After completing test process, pressurization mouth valve 32 is opened, 27 pressure of booster is unloaded to zero, is opened
Tubing valve 31,22 inner fluid of pressure chamber pass back into fuel tank 28.According to the sequence opposite with dress sample, sample is unloaded, completes examination
It tests.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of mating portable rock-soil mechanics real-time loading experimental rig of Industrial CT Machine, it is characterised in that: including axis pressure system,
Confining pressure system and physical quantity system,
Axis pressure system includes rigid posts (1), upper beam (2), lower beam (3), upright nut (5), piston (15), rigid power transmission
Bar (16) and data conductor (35), rigid posts (1) and upper beam (2) and lower beam (3) are consolidated by upright nut (5)
Fixed, piston (15) is connected via pressure sensor (11) and rigidity transmission rod (16), rigid transmission rod (16) by load action in
Displacement sensor (14) in turn pressurizes to sample (13)；
Confining pressure system includes that pressure chamber (22), pressurization generate pipe (17), sample water drain (18), pressure exhaust pipe (19), permeable
Stone (20), oil filler pipe (21), increase device (27), fuel tank (28), water tank (29), tubing valve (31), pressurization mouth valve (32),
Water tank valve (33) and burp valve (34) they are pressure chamber's barrel (23) outside pressure chamber (22), pressurization generation pipe (17),
Oil filler pipe (21) passes through balancing gate pit's top board portion (24) and enters in pressure chamber (22), sample water drain (18), pressure exhaust pipe (19)
Enter in pressure chamber (22) across pressure chamber bottom (25), (24) and lower beam (3) pass through lower beam screw rod (6) at the top of pressure chamber
Connection, and be equipped with lower beam nut (7) and fix, pressure chamber bottom (25) and horizonal base plate (4) are connected by bottom plate screw rod (8), and
It is equipped with bottom plate nut (9) to fix, (24) are connected with lower beam (3) by upper anaerobic copper sealing ring (10) closed at the top of pressure chamber, pressure
Power room bottom (25) be connected with horizonal base plate (4) by lower anaerobic copper sealing ring (12) it is closed, sample (13) lower part be arranged permeable stone
(20), permeable stone (20) is placed on cushion block (30), and pressurization generates pipe (17) connection booster (27), and pressurization generates pipe (17) and increases
Setting pressurization mouth valve (32) between depressor (27), oil filler pipe (21) connect fuel tank (28), oil filler pipe (21) and fuel tank (28) it
Between tubing valve (31) are set, sample water drain (18) connects water tank (29), sample water drain (18) and water tank (29) it
Between water tank valve (33) are set, burp valve (34) are set on pressure exhaust pipe (19)；
Physical quantity system includes pressure sensor (11), load controller (26), displacement sensor (14) and data conductor
(35), the data of strain gauge (11) and displacement sensor (14) are respectively by load controller (26) and displacement controller (36)
Record, displacement sensor (14) pass through rigid transmission rod (16) by data conductor (35), are placed on lower beam (3).
2. the mating portable rock-soil mechanics real-time loading experimental rig of Industrial CT Machine according to claim 1, feature exist
In: the axis pressure system, confining pressure system and physical quantity system are placed on CT turntable (37), and radiographic source (38) issues X-ray
(40) pressure chamber's barrel (23) and sample (13) are penetrated, X-ray (40) is received by detector (39).
3. the mating portable rock-soil mechanics real-time loading experimental rig of Industrial CT Machine according to claim 1, feature exist
In: do not apply confining pressure when uniaxial test, pressurization mouth valve (32), burp valve (34) and tubing valve (31) are in open shape
State；Carry out triaxial test when, sample (13) encapsulation be placed in pressure chamber (22), from fuel tank (28) in pressure chamber (22) filling liquid
It to being full of, closes tubing valve (31), booster (27) is pumped into confining pressure in pressure chamber (22), closes and adds when reaching default pressure
It presses mouth valve (32), pressurization mouth valve (32), tubing valve (31) and burp valve (34) is opened when off-test, by pressure
Oil liquid discharge in room (22).
4. the mating portable rock-soil mechanics real-time loading experimental rig of Industrial CT Machine according to claim 1, feature exist
In: the device is transparent relative to X-ray.
5. the mating portable rock-soil mechanics real-time loading experimental rig of Industrial CT Machine according to claim 1, feature exist
In: the pressure chamber (22) is made of the transparent aeronautical glasses cylinder of high-strength low-density, and pressure chamber (22) apply the same of confining pressure
When, pressure chamber (22) also function as counterforce structure.
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| CN201811558043.6A CN109443928A (en) | 2018-12-19 | 2018-12-19 | The mating portable rock-soil mechanics real-time loading experimental rig of Industrial CT Machine |
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| CN110487645A (en) * | 2019-08-22 | 2019-11-22 | 山东大学 | It is applicable in the Miniature temperature control unsaturated soil triaxial tester and method of industrial CT scan |
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Application publication date: 20190308 |