CN109632502A - Multi-joint experimental system and its experimental method - Google Patents
Multi-joint experimental system and its experimental method Download PDFInfo
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- 238000002474 experimental method Methods 0.000 title claims abstract description 34
- 239000011435 rock Substances 0.000 claims abstract description 40
- 238000001764 infiltration Methods 0.000 claims abstract description 38
- 230000008595 infiltration Effects 0.000 claims abstract description 37
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 14
- 230000035515 penetration Effects 0.000 claims abstract description 11
- 230000003204 osmotic effect Effects 0.000 claims abstract description 8
- 238000004826 seaming Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 5
- 238000005325 percolation Methods 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000007774 longterm Effects 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims description 3
- 238000000280 densification Methods 0.000 claims 1
- 230000035699 permeability Effects 0.000 description 9
- 239000003921 oil Substances 0.000 description 8
- HXELGNKCCDGMMN-UHFFFAOYSA-N [F].[Cl] Chemical compound [F].[Cl] HXELGNKCCDGMMN-UHFFFAOYSA-N 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000000518 rheometry Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000012332 laboratory investigation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 241001661355 Synapsis Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012795 verification Methods 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
- 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
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- 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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- Pathology (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The object of the present invention is to provide a kind of multi-joint experimental system, multiple experimental considerations units share a set of confining pressure load pipeline and infiltration upstream, and suffered confining pressure, osmotic pressure are provided by same confining pressure source, infiltration source sample respectively during the experiment；The axis pressure system of each experimental considerations unit individually connects axis pressure load pump；Infiltration downstream is respectively connected individually to atmospheric pressure or downstream penetration storage tank.The rock mechanics comprehensive experimental system not less than 2 samples can be carried out simultaneously, as scalability, which can simply become it according to researcher's demand the experimental system for only carrying out individual sample test.
Description
Technical field
The invention belongs to material properties of rock testing field, in particular to a kind of creep for measuring multiple rock cores simultaneously is seeped
The experimental system and experimental method of saturating and its coupling long-term experiment.
Background technique
Permeability is the important characterization parameter for describing fluid fluid ability in the porous media materials such as rock；The stream of rock
Becoming characteristic is the deformation performance for describing rock under external force；Permeability and rheological behavior in energy extraction and store, discarded
The various fields such as object disposition, hydraulic engineering, environmental project are widely used in.
In recent years, with the development of economy, unconventional petroleum resources exploitation, CO2Geological storage, rock salt energy reserves etc.
Engineering activity is further frequent, and Human dried bloodstains are gradually marched to Earth, and the permeability of deep rock is extremely low, rheology is special
Property it is significant the problems such as obstructing the mankind to march one of the major obstacle of Earth.Laboratory experiment is study of rocks mechanics row
For the important means of, seepage flow characteristics, systematic development in-house laboratory investigation is important for instructing deep engineering activity to have
Directive significance.However, the permeability due to deep rock is extremely low, will will lead to when testing permeability using conventional experimental method
Experiment measurement process time span is larger, time-consuming；The rheological behavior of study of rocks is even more the huge work of time-consuming；This
Outside, the heterogeneity of rock interior makes the discreteness of core experiment result larger, and the experimental result of a rock core is not enough to generation
The mechanical behavior of table sample by the gross, generally requires repeated work to obtain effective data point, " hydraulic and hydroelectric engineering rock
Stone testing regulations (SL264-2001) " with " Standard for test methods of engineering rock masses (GB/T 50266-2013) " etc. it is required to every group
The number of sample is no less than 3-5.Traditional experiment equipment and experimental method are tested every time can only take a sample to be studied,
So that effective experimental data is obtained, often same type experiment needs follow-on test that can obtain some months, some creep tests
Even several Nian Caineng is needed to obtain preferable result of study, this limits the progress of China's correlative study to a certain extent.
Summary of the invention
The object of the present invention is to provide a kind of multi-joint experimental system, which can carry out multiple samples (>=2 simultaneously
It is a) rock mechanics experiment, while carrying out the long-term experiment for measuring creep, infiltration and its coupling of multiple rock cores, to accelerate
In-house laboratory investigation speed；It is a further object of the present invention to provide the experimental methods based on the experimental system.
Multi-joint experimental system of the invention can carry out the rock mechanics comprehensive experimental system not less than 2 samples simultaneously, make
For scalability, which can simply become it according to researcher's demand the experimental system for only carrying out individual sample test.
Experimental system of the present invention is mainly characterized by multiple experimental considerations units and shares in a set of confining pressure load pipeline and infiltration
Play pipe road, suffered confining pressure, osmotic pressure are provided by same confining pressure source, infiltration source sample respectively during the experiment；Each experiment is single
The axis pressure system of member individually connects axis pressure load pump；Infiltration downstream is respectively connected individually to atmospheric pressure or downstream penetration storage tank.
Experiment system of the present invention, is made of, each experimental configuration includes rectangular frame, three axis at least two test units
Room, axis pressure chamber, upperpush rod, axially loaded component, balancer, support column are constituted；
The support column is fixed on rectangular frame bottom, and the balancer is supported by the way that support column level is fixed, and described three
Axis room and axis pressure chamber are circle tube member closed at one end, be separately fixed at the upper and lower surface of balancer and equilibrium state surround it is closed
Space, described upperpush rod one end are fixed at the top of rectangular frame, and the other end is protruded into triaxial chamber by the through-hole at the top of triaxial chamber
Portion, the axially loaded component are made of cylindrical bar across centrifugal disc, and cylindrical bar more than disk and disk is located at balancer
In the above triaxial chamber, disk cylindrical bar below passes through balancer and protrudes into axis pressure chamber, with the trunnion axis pressure being arranged in axis pressure chamber
Plate connection；
Multiple experimental considerations units share a set of confining pressure load pipeline and infiltration upstream, and sample is suffered during the experiment to be enclosed
Pressure and osmotic pressure are provided by same confining pressure source, infiltration source respectively；The axis pressure system of each experimental considerations unit individually connects axis pressure and adds
Pump is carried, infiltration downstream is respectively connected individually to atmospheric pressure or downstream penetration storage tank.
Further, triaxial chamber is driven by external hydraulic system, can be moved up and down along upperpush rod, be realized opening for triaxial chamber
It opens and closes.
Further, the end edge that triaxial chamber, axis pressure chamber are contacted with balancer is provided with for bolt hole to be arranged, so as to
The flange that it is fixed together with balancer with bolt.
Further, the balancer is the cylindrical member that upper surface is provided with convex platform, convex diameter and triaxial chamber
Internal diameter is identical, is embedded in triaxial chamber, balancer diameter is identical as the outer diameter that triaxial chamber adds flange.
Further, the shaft pressuring plate diameter and axis pressure chamber internal diameter with it is identical, and there is high pressure sealing in the two connection contact position
Circle.
Further, axis pressure chamber lower end is provided with axis pressure loading hole, and axis presses loading hole to pass through pipeline and axis press pump phase
Even, and then to axis pressure chamber it pressurizes, is further loaded to the sample of triaxial chamber；Axis pressure chamber upper end side wall be equipped with relief hole, so as to
Axis pressure chamber inner air is discharged during moving up in axially loaded component.
Further, the upperpush rod connect contact position with triaxial chamber and is provided with high-pressure seal ring, prevents confining pressure oil along upper
Compression bar leakage；Contact position is connected between triaxial chamber and balancer and is provided with high-pressure seal ring, prevents confining pressure oil along triaxial chamber and balance
It is leaked between platform；Axially loaded component connect contact position with balancer and is provided with high-pressure seal ring；Axis pressure chamber is connect with balancer to be connect
Synapsis is provided with high-pressure seal ring.
Further, the axis pressure chamber is mating is provided with seaming chuck and push-down head, seaming chuck and push-down head diameter, upperpush rod
Diameter, axial loading device cylinder shank diameter be equal, in use, upper push-down head places up and down two with rock sample respectively
End, connects with the cylindrical bar of upperpush rod, axially loaded component respectively.
Further, the push-down head of each experimental considerations unit is connected to by upstream percolation path with same osmosis system, seaming chuck
Be connected to atmospheric pressure or downstream penetration storage tank respectively by downstream penetration pipeline, the triaxial chamber of each experimental considerations unit by confining pressure pipeline with
Same confining pressure pump connection, to apply confining pressure into triaxial chamber.
Further, upstream percolation path is provided with upstream infiltration storage tank.
Experimental system of the present invention, upperpush rod, balancer, portal frame constitute confining pressure self-balancing system, axis pressure together
Room, balancer constitute axis and press self-balancing system, by confining pressure pipeline to being filled with hydraulic oil in confining pressure self-balancing system when work, into
And confining pressure pump is utilized to increase the hydraulic fluid pressure in confining pressure self-balancing system, to apply confining pressure to test specimen；Using axis press pump, lead to
It is filled with hydraulic oil in the space crossed between axis pressure pipe road direction axis pressure chamber and shaft pressuring plate, and shaft pressuring plate is pushed to move upwards, Jin Ertong
It is axially loaded to sample progress to cross axially loaded component.
The size of each experimental considerations unit of experimental system of the present invention can be not exactly the same.
The method for carrying out Rock Mechanics Test using multi-joint experimental system of the present invention, can carry out no less than one simultaneously
Rock Mechanics Test, especially can carry out 2 or more creep or permeability tests in set of system simultaneously, while measuring more
Creep, infiltration and its coupling experiment data of a rock core.
The invention has the following advantages:
1, compositional model of the present invention is simple, and experimental system is easily operated.
2, experimental system of the invention can carry out existing conventional Rock Mechanics Test system and be difficult to the triaxial extension carried out
Experiment, i.e. confining pressure (σ3) it is greater than axis pressure (σ1), more really to simulate the operation state of underground storage.
3, experimental system of the invention can carry out the rock of no less than one sample (can carry out simultaneously multiple) simultaneously
Experiment of machanics (such as single shaft, three axis, infiltration, rheology), in particular for consumptions such as permeability test, the experiments of rheology class of hypotonic rock
When longer experiment, can effectively shorten that it tests research cycle, accelerate recent progress in experimental study.
4, experimental system of the present invention can complete the triaxial extension experiment of rock, can open in set of system simultaneously
The creep of exhibition 2 or more or permeability test greatly shorten experimental period.
Detailed description of the invention
Fig. 1 is the positive facade of experimental system of the present invention (three experimental considerations units) depending on cuing open figure；
Fig. 2 is the stress path schematic diagram of embodiment 1 of the present invention.
In figure, 1-portal frame, 2-triaxial chambers, 3-upperpush rods, 4-axis pressure chambers, 5-support columns, 6-balancers, 7-
1-sample push-down head, 7-2-sample seaming chuck, 8-rock samples, 9-1-triaxial chamber anchor screw, 9-2-axis pressure chamber anchoring
Screw, 10-sealing rings, 11-confining pressure pipelines, 12-1,12-2-are respectively to permeate upstream and downstream pipeline, 13-infiltration upstream storages
Tank, 14-1,14-2,14-3-are respectively the infiltration shut-off valve of unit 1,2,3,15-1,15-2,15-3-be respectively unit 1,2,
3 confining pressure shut-off valve, the axially loaded component of 16-1-, 16-2-shaft pressuring plate, 17-relief holes.
Specific embodiment
Experimental system of the present invention is further illustrated below by specific embodiment.
Experimental system by taking the system that 3 experimental considerations units are constituted as an example by explaining in following embodiment, but the system is not
It is limited to be made of 3 units, can be made of 1 or more unit, the ability to work that the upper limit of element number is pumped by confining pressure
It determines.
It is described further below by experimental method of the embodiment to multi-joint experimental system of the present invention.
Embodiment 1
System is tested described in the present embodiment, is made of 3 test units, each experimental configuration includes rectangle portal frame 1, three axis
Room 2, axis pressure chamber 4, upperpush rod 3, axially loaded component 16-1, balancer 6, support column 5 are constituted；
The support column is fixed on rectangular frame bottom, and the balancer is supported by the way that support column level is fixed, and described three
Axis room and axis pressure chamber are circle tube member closed at one end, be separately fixed at the upper and lower surface of balancer and equilibrium state surround it is closed
Space, the end edge that triaxial chamber, axis pressure chamber are contacted with balancer are provided with for bolt hole to be arranged, so as to bolt by its with
The flange that balancer is fixed together.The balancer is the cylindrical member that upper surface is provided with convex platform, convex platform diameter
It is identical as triaxial chamber internal diameter, it is embedded in triaxial chamber, balancer diameter is identical as the outer diameter that triaxial chamber adds flange.The upperpush rod one
End is fixed at the top of rectangular frame, and the other end is protruded into inside triaxial chamber by the through-hole at the top of triaxial chamber, and triaxial chamber passes through outside
Hydraulic system driving, can move up and down along upperpush rod, realize the opening and closing of triaxial chamber.The axially loaded component is by cylinder
Bar is constituted across centrifugal disc, and cylindrical bar more than disk and disk is located in the above triaxial chamber of balancer, disk circle below
Mast passes through balancer and protrudes into axis pressure chamber, is connected by screw to the horizontal shaft pressuring plate being arranged in axis pressure chamber.The shaft pressuring plate
16-2 diameter and axis pressure chamber internal diameter with it is identical, and there is high-pressure seal ring in the two connection contact position.Axis pressure chamber lower end is provided with
Relief hole 17, relief hole are connected by pipeline with axis press pump, and then are pressurizeed to axis pressure chamber, are further added to the sample of triaxial chamber
It carries；Axis pressure chamber upper end side wall is equipped with relief hole, so that axis pressure chamber inner air is discharged during axially loaded component moves up.
Multiple experimental considerations units share a set of confining pressure load pipeline and infiltration upstream, and sample is suffered during the experiment to be enclosed
Pressure and osmotic pressure are provided by same confining pressure source, infiltration source respectively.The push-down head of each experimental considerations unit passes through upstream percolation path 12-1
It is connected to same osmosis system, seaming chuck is connected to atmospheric pressure or downstream penetration storage tank by downstream penetration pipeline 12-2 respectively, respectively
The triaxial chamber of experimental considerations unit is connected to by confining pressure pipeline 11 with same confining pressure pump, to apply confining pressure into triaxial chamber.Each reality
The axis pressure chamber of verification certificate member individually connects axis pressure load pump, and infiltration downstream is respectively connected individually to atmospheric pressure or downstream penetration storage
Tank.Upstream percolation path is provided with upstream infiltration storage tank 13.
The upperpush rod connect contact position with triaxial chamber and is provided with high-pressure seal ring 10, prevents confining pressure oil from seeping along upperpush rod
Leakage；Contact position is connected between triaxial chamber and balancer and is provided with high-pressure seal ring, prevents confining pressure oil from seeping between triaxial chamber and balancer
Leakage；Axially loaded component connect contact position with balancer and is provided with high-pressure seal ring；Axis pressure chamber connect contact position with balancer and sets
It is equipped with high-pressure seal ring.
The axis pressure chamber is mating to be provided with seaming chuck 7-2 and push-down head 7-1, and seaming chuck and push-down head diameter, upperpush rod are straight
Diameter, axial loading device cylinder shank diameter be equal, in use, upper push-down head places up and down two with rock sample respectively
End, connects with the cylindrical bar of upperpush rod, axially loaded component respectively.
Embodiment 2: triaxial extension experiment
1, triaxial chamber 2 is promoted to the top of portal frame 1, the cylindrical rock sample 8 made is mounted on axially loaded
On component 16-1 (rock sample upper and lower side places upper and lower pressure head), rock sample 8, axial direction are wrapped simultaneously with fluorine chlorine rubber membrane
Loaded members 16-1 and upperpush rod 3, and with the upper and lower ends of scalable garter spring banding fluorine chlorine rubber membrane, prevent confining pressure oil from penetrating into；
2, reduce triaxial chamber 2 to balancer 6, lock triaxial chamber anchor screw 9-1, open confining pressure shut-off valve 15-1,15-2,
15-3 (herein if a batch only carries out a sample, need to only open any one confining pressure stop valve), utilize confining pressure
Pipeline 11 is into triaxial chamber full of confining pressure oil；
3, apply axis pressure σ respectively to sample using axis press pump, confining pressure pump1With confining pressure σ3To target value, need to make according to experiment
It obtains axis and presses σ1Increase, reduce or remain unchanged, in this example, holding shaft presses σ1It is constant, it is stepped up confining pressure σ3It is destroyed to sample, it is real
Every experimental data is recorded during testing；
4, confining pressure suffered by sample, axis pressure are laid down, after emptying triaxial chamber mineral oil inside, unclamps triaxial chamber anchor screw 9-
1, triaxial chamber 2 is promoted to the top of portal frame 1, and rock sample 8 of dismantling puts wash clean experiment table top on the skin, completes one group of three axis and stretch
Long experiment.
Embodiment 3: rock permeability creep test
1, triaxial chamber 2 is promoted to the top of portal frame 1, and the cylindrical rock sample 8 made is mounted on sample and is pushed
It on head 7-1 and sample seaming chuck 7-2, and is placed on axially loaded component 16-1, is wrapped simultaneously with fluorine chlorine rubber membrane
Rock sample 8, sample push-down head 7-1 and sample seaming chuck 7-2, and with up and down the two of scalable garter spring banding fluorine chlorine rubber membrane
End prevents confining pressure oil from penetrating into；
2, reduce triaxial chamber 2 to balancer 6, lock triaxial chamber anchor screw 9-1, open confining pressure shut-off valve 15-1,15-2,
15-3, using confining pressure pipeline 11 into triaxial chamber full of confining pressure oil；
3, apply axis pressure σ respectively to sample using axis press pump, confining pressure pump1With confining pressure σ3To target value；It is pumped and is kept using confining pressure
Confining pressure suffered by sample is constant in unit 1,2,3；It is utilized respectively axis suffered by sample in 1,2,3 holding unit 1,2,3 of axis press pump
Press it is constant, and record the axial direction of axis pressure, confining pressure and sample, circumferential deformation changes with time situation；
4, vacuum pump is connected into infiltration upstream 12-1, infiltration shut-off valve 14-1,14-2,14-3 is opened, using true
Sky pump carries out vacuumize process to system, after the completion of vacuum drawn, closes infiltration shut-off valve 14-3, infiltration upstream is turned
It is connected to infiltration loading system (can be gas cylinder, also be osmotic pumps etc.), opens infiltration shut-off valve 14-3, utilizes infiltration loading system
Make sample bottom end osmotic pressure to Pi, close infiltration shut-off valve 14-1,14-2,14-3, record infiltration upstream pressure with
The situation of change of time；
5, after the completion of the application of level-one load, increase axial compressive force suffered by sample to next stage goal in research using axis press pump
Value σ1', infiltration shut-off valve 14-1,14-2,14-3 are opened, makes sample bottom end osmotic pressure extremely using using infiltration loading system
Pi', infiltration shut-off valve 14-1,14-2,14-3 are closed, the pressure of record infiltration upstream changes with time situation；
6, the rheological experiment under the rock sample infiltration under the achievable different stress levels of step 5 is repeated；
7, after testing, confining pressure suffered by sample, axis pressure are laid down, after emptying triaxial chamber mineral oil inside, unclamps three axis
Room anchor screw 9-1 promotes triaxial chamber 2 to the top of portal frame 1, and rock sample 8 of dismantling puts wash clean experiment table top on the skin.
Claims (10)
1. a kind of multi-joint experimental system, which is characterized in that be made of at least two test units, each experimental configuration includes rectangle
Frame, triaxial chamber, axis pressure chamber, upperpush rod, axially loaded component, balancer, support column are constituted；
The support column is fixed on rectangular frame bottom, and the balancer passes through the fixed support of support column level, the triaxial chamber
It is circle tube member closed at one end with axis pressure chamber, the upper and lower surface and equilibrium state for being separately fixed at balancer surround confined air
Between, described upperpush rod one end is fixed at the top of rectangular frame, and the other end is protruded into inside triaxial chamber by the through-hole at the top of triaxial chamber,
The axially loaded component is made of cylindrical bar across centrifugal disc, and cylindrical bar more than disk and disk is located at balancer or more
In triaxial chamber, disk cylindrical bar below passes through balancer and protrudes into axis pressure chamber, connects with the horizontal shaft pressuring plate being arranged in axis pressure chamber
It connects；
Multiple experimental considerations units share a set of confining pressure load pipeline and infiltration upstream, sample during the experiment suffered confining pressure and
Osmotic pressure is provided by same confining pressure source, infiltration source respectively；The axis pressure system of each experimental considerations unit individually connects axis pressure load pump,
Infiltration downstream is respectively connected individually to atmospheric pressure or downstream penetration storage tank.
2. multi-joint experimental system according to claim 1, which is characterized in that triaxial chamber is driven by external hydraulic system, can
It is moved up and down along upperpush rod, realizes the opening and closing of triaxial chamber.
3. multi-joint experimental system according to claim 1, which is characterized in that the end that triaxial chamber, axis pressure chamber are contacted with balancer
Portion edge is provided with for bolt hole to be arranged, so as to the flange that it is fixed together with balancer with bolt.
4. multi-joint experimental system according to claim 1, which is characterized in that the balancer is that upper surface is provided with convex platform
Cylindrical member, convex diameter is identical as triaxial chamber internal diameter, is embedded in triaxial chamber, and balancer diameter and triaxial chamber add flange
Outer diameter is identical.
5. multi-joint experimental system according to claim 1, which is characterized in that the shaft pressuring plate diameter and axis pressure chamber internal diameter and phase
Together, and there is high-pressure seal ring in the two connection contact position.
6. multi-joint experimental system according to claim 1, which is characterized in that axis pressure chamber lower end is provided with axis pressure load
Hole, axis pressure loading hole is connected by pipeline with axis press pump, and then is pressurizeed to axis pressure chamber, is further loaded to the sample of triaxial chamber；
Axis pressure chamber upper end side wall is equipped with relief hole, so that axis pressure chamber inner air is discharged during axially loaded component moves up.
7. multi-joint experimental system according to claim 1, which is characterized in that the upperpush rod connect contact position with triaxial chamber and sets
It is equipped with high-pressure seal ring, prevents confining pressure oil from leaking along upperpush rod；Contact position is connected between triaxial chamber and balancer is provided with high densification
Seal prevents confining pressure oil from leaking between triaxial chamber and balancer；Axially loaded component connect contact position with balancer and is provided with height
Pressure seal ring；Axis pressure chamber connect contact position with balancer and is provided with high-pressure seal ring.
8. multi-joint experimental system according to claim 1, which is characterized in that the mating seaming chuck that is provided with of the axis pressure chamber is under
Pressure head, seaming chuck and push-down head diameter, upperpush rod diameter, axial loading device cylinder shank diameter be equal, in use, up and down
Pressure head is placed respectively and the upper and lower ends of rock sample, connects respectively with the cylindrical bar of upperpush rod, axially loaded component.
9. multi-joint experimental system according to claim 1, which is characterized in that the push-down head of each experimental considerations unit is permeated by upstream
Pipeline is connected to same osmosis system, and seaming chuck is connected to atmospheric pressure or downstream penetration storage tank by downstream penetration pipeline respectively, respectively
The triaxial chamber of experimental considerations unit is connected to by confining pressure pipeline with same confining pressure pump, to apply confining pressure into triaxial chamber；The upstream
Percolation path is provided with upstream infiltration storage tank.
10. the method that multi-joint experimental system carries out Rock Mechanics Test described in any claim in requirement 1-9, feature
It is, while carries out no less than one Rock Mechanics Test, while carrying out creep, infiltration and its coupling for measuring multiple rock cores
Long-term experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811509749.3A CN109632502A (en) | 2018-12-11 | 2018-12-11 | Multi-joint experimental system and its experimental method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261281A (en) * | 2019-07-22 | 2019-09-20 | 长沙理工大学 | Soft rock seepage flow brief test system and its application method under low-stress |
| CN110426337A (en) * | 2019-08-30 | 2019-11-08 | 长沙理工大学 | Rock And Soil seepage deformation test device and its test method under low-stress |
| CN111307606A (en) * | 2020-04-07 | 2020-06-19 | 四川大学 | Deep high-temperature and high-pressure environment rock stretching and tension-compression circulating mechanical experiment device |
| CN112834320A (en) * | 2020-11-03 | 2021-05-25 | 贵州大学 | Dry-wet cycle triaxial testing machine and use method thereof |
| CN112903462A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Device and method for testing bearing capacity of single-row group column in horizontal goaf under double-shaft loading |
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| CN110261281A (en) * | 2019-07-22 | 2019-09-20 | 长沙理工大学 | Soft rock seepage flow brief test system and its application method under low-stress |
| CN110261281B (en) * | 2019-07-22 | 2024-03-26 | 长沙理工大学 | Soft rock seepage simple test system under low stress condition and use method thereof |
| CN110426337A (en) * | 2019-08-30 | 2019-11-08 | 长沙理工大学 | Rock And Soil seepage deformation test device and its test method under low-stress |
| CN110426337B (en) * | 2019-08-30 | 2024-03-26 | 长沙理工大学 | Rock-soil body osmotic deformation testing device under low stress condition and testing method thereof |
| CN111307606A (en) * | 2020-04-07 | 2020-06-19 | 四川大学 | Deep high-temperature and high-pressure environment rock stretching and tension-compression circulating mechanical experiment device |
| CN111307606B (en) * | 2020-04-07 | 2024-05-14 | 四川大学 | Deep high-temperature high-pressure environment rock stretching and pulling-pressing cyclic mechanics experimental device |
| CN112834320A (en) * | 2020-11-03 | 2021-05-25 | 贵州大学 | Dry-wet cycle triaxial testing machine and use method thereof |
| CN112903462A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Device and method for testing bearing capacity of single-row group column in horizontal goaf under double-shaft loading |
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