CN106872330A - True triaxial test method and system - Google Patents
True triaxial test method and system Download PDFInfo
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- CN106872330A CN106872330A CN201710029706.4A CN201710029706A CN106872330A CN 106872330 A CN106872330 A CN 106872330A CN 201710029706 A CN201710029706 A CN 201710029706A CN 106872330 A CN106872330 A CN 106872330A
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- 238000010998 test method Methods 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 60
- 238000006073 displacement reaction Methods 0.000 claims abstract description 32
- 230000008878 coupling Effects 0.000 claims abstract description 22
- 238000010168 coupling process Methods 0.000 claims abstract description 22
- 238000005859 coupling reaction Methods 0.000 claims abstract description 22
- 230000003204 osmotic effect Effects 0.000 claims description 32
- 239000012530 fluid Substances 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 17
- 230000035699 permeability Effects 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000002689 soil Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004801 process automation Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002699 waste material Substances 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
- 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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The present invention relates to soil test equipment technical field, and in particular to a kind of true triaxial test method and system.True triaxial test system is by setting multiple cylinder barrels, spacing jack, the force framework with receiving space, control device, the first displacement meter, second displacement meter and triple motion meter that loading device body, multiple measuring pumps, multiple pistons are matched respectively with multiple pistons, it is connected realizes true triaxial coupling test respectively with multiple measuring pumps and the first displacement meter, second displacement meter and triple motion meter by by control device, and realizes that true triaxial coupling test is automated.
Description
Technical field
The present invention relates to soil test equipment technical field, in particular to a kind of true triaxial test method and system.
Background technology
True triaxial test system is commonly used in the experiment of the force analysis of ground.With continuing to develop for engineering technology,
The complexity of the tradition Geotechnical Engineering such as water conservancy and hydropower, geothermal exploitation and oil and gas exploitation is improved year by year, at the same time, state
Family also releases some more national strategy meaning, challenging special engineering (such as level radioactive nuclear waste geological storage, dioxies
Change carbon geological storage etc.).Can the automation that true triaxial coupling test be realized be the important of judgement true triaxial test system quality
Standard.Additionally, true triaxial test system of the prior art is typically only capable to carry out false triaxial test or the examination of simple normal triaxial
Testing can not realize true triaxial coupling test.
The content of the invention
In view of this, it is an object of the invention to provide a kind of true triaxial test system, dress is loaded by setting true triaxial
Put, true triaxial force application apparatus and numerical control device realize true triaxial coupling test, and realize that true triaxial coupling test is automated.
In view of this, another object of the present invention is to provide a kind of true triaxial test method, loaded by true triaxial and filled
Put, true triaxial force application apparatus and numerical control device realize true triaxial coupling test, and and realize that true triaxial coupling test is automated.
To achieve the above object, the embodiment of the present invention is adopted the following technical scheme that：
A kind of true triaxial test system, including true triaxial loading device, true triaxial force application apparatus and numerical control device.
The true triaxial loading device include loading device body, the first measuring pump, the second measuring pump, the 3rd measuring pump,
Lifting measuring pump and osmotic pressure measuring pump.The true triaxial force application apparatus include first piston, second piston, the 3rd piston, liter
The second cylinder barrel and the lifting that the first cylinder barrel that drop piston is matched with the first piston is matched with the second piston are lived
Lifting cylinder barrel, spacing jack and the force framework with receiving space of plug matching.The numerical control device includes that control is filled
Put, the first displacement meter, second displacement meter and triple motion meter.
The control device and first displacement meter, second displacement meter, triple motion meter, the first measuring pump, the second meter
Amount pump, the 3rd measuring pump, lifting measuring pump and osmotic pressure measuring pump are connected respectively.
The first piston is arranged in first cylinder barrel, and first cylinder barrel is installed on the force frame roof,
First cylinder barrel passes through pipeline communication with first measuring pump；The second piston is arranged in second cylinder barrel, institute
State the second cylinder barrel and be installed on the force frame side wall, second cylinder barrel passes through pipeline communication with second measuring pump；Institute
State lifting piston and be arranged at the lifting cylinder barrel, the lifting cylinder barrel is with the lifting measuring pump by pipeline communication, the liter
Drop cylinder barrel is arranged at the force base of frame, and the loading device body passes through pipeline communication with the osmotic pressure measuring pump,
The loading device body is arranged at the lifting piston near the side of the first piston；The spacing jack is installed on
The force frame side wall, the 3rd measuring pump is connected by pipeline with the receiving space of the force framework.
First displacement meter is arranged at one end of first cylinder barrel to detect end and the first piston of the first cylinder barrel
Between the first signal for producing of change in location, the second displacement meter is arranged at one end of second cylinder barrel to detect the second cylinder
The secondary signal that change in location is produced between the end of cylinder and second piston, the triple motion meter is arranged at the loading device
Body produces the 3rd signal to detect the change in location of the loading device body.
The control device receives first signal, secondary signal and the 3rd signal and obtains to be checked according to the algorithm that prestores
Survey the strain of article.
Optionally, in above-mentioned actual triaxial testing apparatus, the loading device body has sealing space, the loading dress
Put between the sealing space of body and the osmotic pressure measuring pump by pipeline communication, pressure vessel and two are provided with the pipeline
Individual valve arrangement, described two valve arrangements are respectively arranged at the two ends of the pressure vessel, and the pressure vessel detection is described
The pressure that loading device body is subject to, the control device is connected with the pressure vessel and obtains the pressure, the control
Device obtains the permeability of article to be detected according to the pressure and the algorithm that prestores.
Optionally, in above-mentioned actual triaxial testing apparatus, sealing space and the osmotic pressure of the loading device body
Measuring pump by two pipeline communications, one end of two pipelines connects with the osmotic pressure measuring pump, the other end with it is described
It is respectively communicated with the top and bottom of loading device body, pressure vessel and two valve arrangements, described two is provided with each pipeline
Individual valve arrangement is respectively arranged at the two ends of the pressure vessel, and two pressure vessels detect the loading device sheet respectively
The second pressure that the first pressure and the loading device body bottom portion that body top is subject to are subject to, the pressure vessel and the control
Device processed is connected and obtains the first pressure and second pressure and according to the first pressure and second pressure and the algorithm that prestores
Obtain the permeability of article to be detected.
Optionally, in above-mentioned actual triaxial testing apparatus, first cylinder barrel and the first measuring pump are connected by two pipelines
Logical, one end of two pipelines connects with first measuring pump, two ends of the other end respectively with first cylinder barrel connect.
Second cylinder barrel and the second measuring pump are by two pipeline communications, one end and described second of two pipelines
Measuring pump connection, two ends of the other end respectively with second cylinder barrel connect.
The lifting cylinder barrel and lifting measuring pump pass through two pipeline communications, one end of two pipelines and the lifting
The two ends of measuring pump connection, the other end respectively with the lifting cylinder barrel connect.
Optionally, in above-mentioned actual triaxial testing apparatus, the true triaxial force application apparatus also include gag lever post, described spacing
Bar is connected between the loading device body and the force frame roof.
Optionally, in above-mentioned actual triaxial testing apparatus, the gag lever post for multiple, between two neighboring gag lever post away from
From identical, the spacing jack passes through the adjacent gag lever post of any two.
Optionally, in above-mentioned actual triaxial testing apparatus, the control device is connected to control with the spacing jack
The spacing jack movement.
Optionally, in above-mentioned actual triaxial testing apparatus, the force frame roof is provided with vent, the exhaust
Stopple is detachably connected with duct.
On the basis of the above, the present invention also provides a kind of true triaxial test method, is applied to above-mentioned true triaxial test system
System, the described method comprises the following steps：
Lifting measuring pump passes through pipeline to addition pressurized fluid lifting loading device body in lifting piston to seal force
The receiving space of frame body；
The spacing jack movement is controlled so that the spacing jack is fitted with the loading device body；
Osmotic pressure measuring pump needs to be detected the loading device body of material by being provided with the pipeline of pressure vessel to storage
Sealing space in add seepage flow material；
Control device controls the first measuring pump, the second measuring pump and/or the 3rd measuring pump respectively to first cylinder barrel, the
The pressurized fluid of predetermined amount is added in the receiving space of two cylinder barrels and/or force framework；
There is predetermined amount in the receiving space of first cylinder barrel, second cylinder barrel and/or the force framework
Under pressurized fluid, the pressure that pressure vessel detection loading device body is subject to；
The control device receives the pressure and the coupling permeability of the material to be detected is obtained according to preset rules.
Optionally, in above-mentioned true triaxial test method, the pressure that the pressure vessel detection loading device body is subject to
The step of include：
After preset pressure is forced into two pressure vessels, closing is arranged at the osmotic pressure measuring pump and the loading
Between device body top and near the valve arrangement of the osmotic pressure measuring pump.
Two pressure vessels detect the first pressure and the loading that the loading device body bottom portion is subject to respectively
The second pressure that device body bottom is subject to.
A kind of true triaxial test method and system that the present invention is provided, by set loading device body, multiple measuring pump,
Multiple cylinder barrels, spacing jack, the force framework with receiving space, control that multiple pistons are matched respectively with multiple pistons
Device, the first displacement meter, second displacement meter and triple motion meter, by by control device and multiple measuring pumps and the first displacement
Meter, second displacement meter and triple motion meter connect realize true triaxial coupling test respectively, and realize true triaxial coupling test
Automation.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be attached to what is used needed for embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only section Example of the invention, thus be not construed as it is right
The restriction of the scope of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other related accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is a kind of structured flowchart of true triaxial test system provided in an embodiment of the present invention.
Fig. 2 is a kind of structural representation of true triaxial test system provided in an embodiment of the present invention.
Fig. 3 is a kind of another structural representation of true triaxial test system provided in an embodiment of the present invention.
Fig. 4 is a kind of another structural representation of true triaxial test system provided in an embodiment of the present invention.
Fig. 5 is a kind of flow chart of true triaxial test method provided in an embodiment of the present invention.
Icon：10- true triaxial loading devices；30- true triaxial force application apparatus；50- numerical control devices；110- loading device sheets
Body；The measuring pumps of 120- first；The measuring pumps of 130- second；The measuring pumps of 140- the 3rd；150- osmotic pressure measuring pumps；160- pressure holds
Device；170- lifts measuring pump；310- force frameworks；320- base plates；The spacing jack of 330-；340- gag lever posts；350- first lives
Plug；360- second pistons；370- lifting pistons；The cylinder barrels of 380- first；The cylinder barrels of 390- second；400- lifts cylinder barrel；410- valve controls
Device；420- pipelines；The displacement meters of 510- first；520- second displacement meters；530- triple motion meters.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme applied to the present invention in example is clearly and completely described, it is clear that described embodiment is this
A part of embodiment is invented, rather than whole embodiments.The embodiment of the present invention generally described and illustrated in accompanying drawing herein
Component can arrange and design with a variety of configurations.
Therefore, the detailed description of embodiments of the invention below to providing in the accompanying drawings is not intended to limit claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it need not be further defined and explained in subsequent accompanying drawing.
In the description of the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can be
Mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in the present invention
In concrete meaning.
As shown in figure 1, a kind of true triaxial test system provided in an embodiment of the present invention, the true triaxial test system includes
True triaxial loading device 10, true triaxial force application apparatus 30 and numerical control device 50.
Incorporated by reference to Fig. 2, the true triaxial loading device 10 includes loading device body 110, the first measuring pump 120, second
Measuring pump 130, the 3rd measuring pump 140, osmotic pressure measuring pump 150 and lifting measuring pump 170.
Incorporated by reference to Fig. 3, the true triaxial force application apparatus 30 include first piston 350, second piston 360, the 3rd piston, liter
The second cylinder barrel that the first cylinder barrel 380 that drop piston 370 is matched with the first piston 350 is matched with the second piston 360
390 lifting cylinder barrel 400, spacing jack 330 and the force frames with receiving space matched with the lifting piston 370
Frame 310.
Incorporated by reference to Fig. 4, the numerical control device 50 includes control device (not shown), the first displacement meter 510, second
Move meter 520 and triple motion meter 530.
The first piston 350 is arranged in first cylinder barrel 380, and first cylinder barrel 380 is installed on the force
The top of framework 310, first cylinder barrel 380 is connected with first measuring pump 120 by pipeline 420.The second piston 360
It is arranged in second cylinder barrel 390, second cylinder barrel 390 is installed on the force side wall of framework 310, second cylinder barrel
390 are connected with second measuring pump 130 by pipeline 420.The lifting piston 370 is arranged at the lifting cylinder barrel 400, institute
State lifting cylinder barrel 400 to be connected by pipeline 420 with the lifting measuring pump 170, the lifting cylinder barrel 400 is arranged at the force
The bottom of framework 310, the loading device body 110 is connected with the osmotic pressure measuring pump 150 by pipeline 420, the loading
Device body 110 is arranged at the lifting piston 370 near the side of the first piston 350.The spacing jack 330 is pacified
Loaded on the force side wall of framework 310, the 3rd measuring pump 140 is empty with the receiving of the force framework 310 by pipeline 420
Between connect.
Optionally, first cylinder barrel 380 is connected with the first measuring pump 120 by two pipelines 420, two pipelines
420 one end connects with first measuring pump 120, two ends of the other end respectively with first cylinder barrel 380 connect.Described
Two cylinder barrels 390 are connected with the second measuring pump 130 by two pipelines 420, and one end of two pipelines 420 and described second is counted
Pump 130 is connected amount, two ends of the other end respectively with second cylinder barrel 390 connect.The lifting cylinder barrel 400 and lifting measuring pump
170 are connected by two pipelines 420, and one end of two pipelines 420 connects with the lifting measuring pump 170, the other end point
Two ends not with the lifting cylinder barrel 400 connect.
The control device is measured with first displacement meter 510, second displacement meter 520, triple motion meter 530, first
Pump 120, the second measuring pump 130, the 3rd measuring pump 140, lifting measuring pump 170 and osmotic pressure measuring pump 150 are connected respectively.
When true triaxial test is carried out, the lifting piston 370 is moved up so that institute relative to the lifting cylinder barrel 400
Loading device body 110 is stated to be contacted with the first piston 350, second piston 360 and spacing jack 330 respectively.
First displacement meter 510 be arranged at one end of first cylinder barrel 380 with detect the end of the first cylinder barrel 380 with
The first signal that change in location is produced between first piston 350, the second displacement meter 520 is arranged at second cylinder barrel 390
One end detecting the secondary signal that change in location between the end of the second cylinder barrel 390 and second piston 360 is produced, the described 3rd
Displacement meter 530 is arranged at the loading device body 110 to detect that the change in location of the loading device body 110 produces the 3rd
Signal.The control device receives first signal, secondary signal and the 3rd signal and obtains loading dress according to the algorithm that prestores
The stress being subject on the different directions for putting body 110.
Optionally, the true triaxial force application apparatus 30 also include base plate 320, and the base plate 320 is arranged at the lifting and lives
, near the side of the first piston 350, the loading device body 110 is arranged at the base plate 320 so that the bottom for plug 370
The loading device body 110 of plate 320 pairs plays a part of support.
In the present embodiment, the shape of the base plate 320 can be rectangle, square or circle etc., as long as can be to institute
State loading device body 110 to play a supporting role, be not specifically limited herein.The spacing jack 330 can be hand
Move spacing jack, or spacing automatic spacing jack is controlled by control device.In the present embodiment, institute
Spacing jack 330 is stated for automatic spacing jack, the control device is connected described to control with the spacing jack 330
Spacing jack 330 is moved.
Optionally, first measuring pump 120, second measuring pump 130, the 3rd measuring pump 140 and lifting measuring pump 170
Species can be plunger type metering pump, diaphragm metering pump or fold JMW type diaphragm metering pumps etc., not do specifically limit herein
It is fixed, as long as can realize that liquid is conveyed.
The size of first cylinder barrel 380, the second cylinder barrel 390 and lifting cylinder barrel 400 can be identical, or not
With.In the present embodiment, first cylinder barrel 380 is identical with the size of second cylinder barrel 390, the lifting cylinder barrel 400
It is of different sizes with first cylinder barrel 380.The size of the lifting cylinder barrel 400, the first cylinder barrel 380 and the second cylinder barrel 390 is not
It is specifically limited, is configured according to the actual requirements.
The force framework 310 is the cuboid with receiving space.When seepage tests are carried out, the force framework
310 receiving space is confined space, and the receiving space size of the force framework 310 is arbitrary, is entered according to the actual requirements
Row is set.In the present embodiment, the top of force framework 310 is provided with vent, removable at the vent
It is connected with stopple with unloading.Cause that the true triaxial test system, when being tested, is prevented effectively from and is applied to described by above-mentioned setting
When adding pressurized fluid in the receiving space of power framework 310, the excessive influence result of the test of the pressure in the receiving space is caused.
The algorithm that prestores is for various, including the algorithm of permeability, the algorithm of stress and is obtained according to stress and permeability
To the algorithm of coupling permeability.The algorithm that prestores is stored in the control device, and control device can be according to receiving
Unlike signal calls the different algorithms that prestore to carry out being calculated corresponding result.
Optionally, the loading device body 110 has sealing space, the sealing space of the loading device body 110
Connected by pipeline 420 between the osmotic pressure measuring pump 150, pressure vessel 160 and two valves are provided with the pipeline 420
Control device 410, described two valve arrangements 410 are respectively arranged at the two ends of the pressure vessel 160, the pressure vessel 160
The pressure that the loading device body 110 is subject to is detected, the control device is connected with the pressure vessel 160 and obtains described
Pressure, the control device obtains the permeability of article to be detected according to the pressure and the algorithm that prestores.
The loading device body 110 includes top, bottom, rubber sleeve and cushion block.The cushion block is two, described in two
Cushion block is oppositely arranged, and rubber sleeve is arranged between two cushion blocks and is contacted respectively with two cushion blocks, described rubber sleeve one end
The top, the other end is sheathed on to be sheathed on the bottom to form sealing space.
The sealing space of the loading device body 110 is connected with the osmotic pressure measuring pump 150 by two pipelines 420
Logical, one end of two pipelines 420 connects with the osmotic pressure measuring pump 150, the other end and the loading device body 110
Top and bottom be respectively communicated with, pressure vessel 160 and two valve arrangements 410, described two valves are provided with each pipeline 420
Control device 410 is respectively arranged at the two ends of the pressure vessel 160, and two pressure vessels 160 detect the loading respectively
The second pressure that the first pressure and the bottom of loading device body 110 that the top of device body 110 is subject to are subject to, the pressure
Container 160 is connected with the control device and obtains the first pressure and second pressure and according to the first pressure and second
Pressure and the algorithm that prestores obtain the permeability of article to be detected.
Optionally, the triple motion meter 530 is arranged at the loading device body 110 and is contacted with the rubber sleeve.
The change in location that the rubber sleeve occurs in terms of the triple motion 530 when carrying out seepage tests to detect.Specifically, institute
Triple motion meter 530 is stated for two, the relative both sides of the loading device body 110 are respectively arranged at.
Optionally, the true triaxial force application apparatus 30 also include gag lever post 340, and the gag lever post 340 is connected to described adding
Carry between device body 110 and the top of force framework 310, the spacing jack 330 passes through the adjacent limit of any two
Position bar 340.The quantity of the gag lever post 340 is multiple, and one end of each gag lever post 340 is connected with the base respectively, separately
Top of the one end respectively with the force framework 310 is connected.Spacing between two neighboring gag lever post 340 is identical, by setting
Multiple gag lever posts 340 are prevented effectively from when true triaxial coupling test is carried out, and the loading device body 110 is relative to the force
Framework 310 is rotated, and influences result of the test.In the present embodiment, the quantity of the gag lever post 340 is 4-8.The gag lever post
340 is hollow gag lever post 340, and hollow gag lever post 340 is set to so that the gag lever post 340 can by by the gag lever post 340
Realize shrinking, so that the loading device body 110 can also be played when rising or falling avoids loading device body 110 with force
The situation that framework 310 is relatively moved.
The gag lever post 340 is bolted with the force framework 310 and loading device body 110.By using
Bolt connecting mode can make the true triaxial test system when different tests are carried out, and change different loading device bodies
110, detected with the coupling permeability for completing different articles to be detected.It is connected with lifting measuring pump 170 by control device simultaneously
Realize that the control lifting piston 370 is moved up and down, so as to control the receiving space of the force framework 310 to be in sealing shape
State, while realizing that first piston 350, second piston 360 and spacing jack 330 are contacted with the loading device body 110.
It is connected with osmotic pressure measuring pump 150 by by control device, is realized to addition seepage flow liquid reality in the loading device body 110
Existing seepage flow detection, distinguishes by by control device with first measuring pump 120, the second measuring pump 130 and the 3rd measuring pump 140
Connection, controls each measuring pump to load or unload pressurized fluid in the receiving space of the force framework 310, and realizing should in three axles
Permeability detection under power, and then true triaxial coupling test is realized, and carry out the process automation excessively of coupling test.
It should be noted that the connected mode of above-mentioned each part is and is detachably connected, and the junction of each part is close
Closing property is good.During by the way that each part being set into detachable connection so that section components are damaged in process of the test, repair
Reason is safeguarded simple and convenient.
Incorporated by reference to Fig. 5, on the basis of the above, the present invention also provides a kind of true triaxial test method, the true triaxial test
Method is applied to above-mentioned true triaxial test system.The true triaxial test method is comprised the following steps：
Step S10：Lifting measuring pump 170 loads dress by pipeline 420 to addition pressurized fluid lifting in lifting piston 370
Body 110 is put to seal the receiving space of the force body of framework 310.
Step S20：The spacing jack 330 is controlled to move so that the spacing jack 330 and the loading device
Body 110 is fitted.
By control spacing jack 330 to be fitted with loading device body 110 and make the spacing jack 330 with it is described
Gag lever post 340 is connected so that the position of the loading device body 110 is fixed, and being prevented effectively from loading device body 110 is being carried out
There is the sealing effectiveness of change in location influence receiving space when seepage coupling is tested so that test data is inaccurate.
Step S30：Osmotic pressure measuring pump 150 needs detectable substance by being provided with the pipeline 420 of pressure vessel 160 to storage
Seepage flow material is added in the sealing space of the loading device body 110 of matter.
The seepage flow material can be but not limited to HCl solution, NaOH solution, NaCl solution, H2CO3Solution and NH4NO3
Solution.Realize that the chemical attack under different situations is detected by loading different chemical reagent.
Step S40：Control device controls the first measuring pump 120, the second measuring pump 130 and/or the 3rd measuring pump 140 to distinguish
Added in receiving space by pipeline 420 to first cylinder barrel 380, the second cylinder barrel 390 and/or force framework 310 default
The pressurized fluid of amount.The pressurized fluid can be water or oil.In the present embodiment, the pressurized fluid is oil.
Specifically, the pressurized fluid and described second that first measuring pump 120 is added to first cylinder barrel 380 is measured
Pump 130 can be identical, or different to the predetermined amount of the pressurized fluid added in second cylinder barrel 390,
This is not specifically limited.Pressurized fluid and the described 3rd metering that second measuring pump 130 is added to second cylinder barrel 390
The predetermined amount of the pressurized fluid that pump 140 is added in the receiving space to the force framework 310 can be that identical can also be
Different, it is different in the present embodiment.
Step S50：It is empty in the receiving of first cylinder barrel 380, second cylinder barrel 390 and/or the force framework 310
Between in exist under the pressurized fluid of predetermined amount, the pressure that the detection loading device of pressure vessel 160 body 110 is subject to.
The pressurized fluid of the predetermined amount can be configured according to actual conditions, to detect the pressurized fluid of different predetermined amounts
In the case of the pressure that is subject to of loading device body 110, wherein, the pressure is osmotic pressure.
Optionally, the step of pressure that the detection loading device of the pressure vessel 160 body 110 is subject to, includes：To two
After being forced into preset pressure in pressure vessel 160, closing is arranged at the osmotic pressure measuring pump 150 with the loading device body
Between 110 tops and near the valve arrangement 410 of the osmotic pressure measuring pump 150.Two pressure vessels 160 are detected respectively
The second pressure that the first pressure and the bottom of loading device body 110 that the bottom of loading device body 110 is subject to are subject to.
Step S60：The control device receives the pressure and the coupling of the material to be detected is obtained according to preset rules
Close permeability.
Specifically, the control device receives the first pressure, second pressure, the first signal, secondary signal and the
Three signals simultaneously according to the algorithm that prestores be calculated the coupling permeability of article to be detected.Wherein described first pressure is first
Osmotic pressure, the second pressure is the second osmotic pressure.
To sum up, a kind of true triaxial test method and system provided in an embodiment of the present invention.By setting loading device body
110th, multiple measuring pumps, multiple pistons and the multiple cylinder barrels, spacing jack 330 that multiple pistons are matched respectively, empty with accommodating
Between force framework 310, control device, the first displacement meter 510, second displacement meter 520 and triple motion meter 530, by will
Control device is connected real respectively with multiple measuring pumps and the first displacement meter 510, second displacement meter 520 and triple motion meter 530
True triaxial test is showed, and has realized that true triaxial coupling test is automated.It is set to detachably by by the connected mode of each part
Connected mode so that the repairing of the true triaxial test system is safeguarded simple and convenient.By loading variety classes and different volumes
Chemical reagent realize under different coupling conditions permeability detection.
In embodiment provided by the present invention, it should be understood that disclosed method, device, it is also possible to by other
Mode realize.Device embodiment described above is only schematical, for example, the flow chart and block diagram in accompanying drawing show
The architectural framework in the cards of devices in accordance with embodiments of the present invention, method and processor program product, function and behaviour
Make.At this point, each square frame in flow chart or block diagram can represent a part for module, program segment or code, institute
Stating a part for module, program segment or code is used for the executable instruction of the logic function that realization specifies comprising one or more.
It should also be noted that in some are as the implementation replaced, the function of being marked in square frame can also be with different from accompanying drawing
The order for being marked occurs.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.And, term " including " or any other variant be intended to nonexcludability
Include so that process, method, article or equipment including a series of key elements not only include those key elements, but also
Including other key elements being not expressly set out, or also include for this process, method, article or equipment it is intrinsic want
Element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that wanted including described
Also there is other identical element in process, method, article or the equipment of element.
The above, specific embodiment only of the invention, but protection scope of the present invention is not limited thereto, and it is any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of true triaxial test system, it is characterised in that including：True triaxial loading device, true triaxial force application apparatus and numerical control
Device；
The true triaxial loading device includes loading device body, the first measuring pump, the second measuring pump, the 3rd measuring pump, lifting
Measuring pump and osmotic pressure measuring pump；
The true triaxial force application apparatus include first piston, second piston, the 3rd piston, lifting piston and the first piston
It is lifting cylinder barrel that second cylinder barrel that is matched with the second piston of first cylinder barrel of matching is matched with the lifting piston, spacing
Jack and the force framework with receiving space；
The numerical control device includes control device, the first displacement meter, second displacement meter and triple motion meter；
The control device and first displacement meter, second displacement meter, triple motion meter, the first measuring pump, the second measuring pump,
3rd measuring pump, lifting measuring pump and osmotic pressure measuring pump are connected respectively；
The first piston is arranged in first cylinder barrel, and first cylinder barrel is installed on the force frame roof, described
First cylinder barrel passes through pipeline communication with first measuring pump；The second piston is arranged in second cylinder barrel, and described
Two cylinder barrels are installed on the force frame side wall, and second cylinder barrel passes through pipeline communication with second measuring pump；The liter
Drop piston is arranged at the lifting cylinder barrel, and the lifting cylinder barrel is with the lifting measuring pump by pipeline communication, the lift cylinders
Cylinder is arranged at the force base of frame, and the loading device body passes through pipeline communication with the osmotic pressure measuring pump, described
Loading device body is arranged at the lifting piston near the side of the first piston；The spacing jack is installed on described
Force frame side wall, the 3rd measuring pump is connected by pipeline with the receiving space of the force framework；
First displacement meter is arranged at one end of first cylinder barrel between the end and the first piston that detect the first cylinder barrel
The first signal that change in location is produced, the second displacement meter is arranged at one end of second cylinder barrel to detect the second cylinder barrel
The secondary signal that change in location is produced between end and second piston, the triple motion meter is arranged at the loading device body
3rd signal is produced with the change in location for detecting the loading device body；
The control device receives first signal, secondary signal and the 3rd signal and obtains thing to be detected according to the algorithm that prestores
The strain of product.
2. true triaxial test system according to claim 1, it is characterised in that the loading device body has sealing empty
Between, by pipeline communication between the sealing space of the loading device body and the osmotic pressure measuring pump, set on the pipeline
There are pressure vessel and two valve arrangements, described two valve arrangements are respectively arranged at the two ends of the pressure vessel, the pressure
Force container detects the pressure that the loading device body is subject to, and the control device is connected with the pressure vessel and obtains described
Pressure, the control device obtains the permeability of article to be detected according to the pressure and the algorithm that prestores.
3. true triaxial test system according to claim 2, it is characterised in that the sealing space of the loading device body
With the osmotic pressure measuring pump by two pipeline communications, one end of two pipelines connects with the osmotic pressure measuring pump,
It is respectively communicated with the top and bottom of the other end and the loading device body, pressure vessel and two valve controls is provided with each pipeline
Device, described two valve arrangements are respectively arranged at the two ends of the pressure vessel, and two pressure vessels detect institute respectively
State the second pressure that the loading device first pressure that is subject to of top and the loading device body bottom portion are subject to, the pressure vessel
The first pressure and second pressure are connected and obtained with the control device and according to the first pressure and second pressure and
The algorithm that prestores obtains the permeability of article to be detected.
4. true triaxial test system according to claim 3, it is characterised in that first cylinder barrel and the first measuring pump are logical
Cross two pipeline communications, one end of two pipelines connects with first measuring pump, the other end respectively with first cylinder
The two ends connection of cylinder；
Second cylinder barrel and the second measuring pump are by two pipeline communications, one end of two pipelines and the described second metering
Pump connection, two ends of the other end respectively with second cylinder barrel connect；
The lifting cylinder barrel and lifting measuring pump are by two pipeline communications, one end of two pipelines and the lifting metering
The two ends of pump connection, the other end respectively with the lifting cylinder barrel connect.
5. true triaxial test system according to claim 3, it is characterised in that the true triaxial force application apparatus also include limit
Position bar, the gag lever post is connected between the loading device body and the force frame roof.
6. true triaxial test system according to claim 5, it is characterised in that the gag lever post is multiple, two neighboring
The distance between gag lever post is identical, and the spacing jack passes through the adjacent gag lever post of any two.
7. true triaxial test system according to claim 5, it is characterised in that the control device is spacing very heavy with described
Top connection is moved with controlling the spacing jack.
8. true triaxial test system according to claim 3, it is characterised in that the force frame roof is provided with exhaust
Duct, stopple is detachably connected with the vent.
9. a kind of true triaxial test method, is applied to the true triaxial test system described in any one of claim 3-8, its feature
It is that the described method comprises the following steps：
Lifting measuring pump passes through pipeline to addition pressurized fluid lifting loading device body in lifting piston to seal force framework
The receiving space of body；
The spacing jack movement is controlled so that the spacing jack is fitted with the loading device body；
Osmotic pressure measuring pump needs to be detected the close of the loading device body of material by being provided with the pipeline of pressure vessel to storage
Envelope adds seepage flow material in space；
Control device controls the first measuring pump, the second measuring pump and/or the 3rd measuring pump respectively to first cylinder barrel, the second cylinder
The pressurized fluid of predetermined amount is added in the receiving space of cylinder and/or force framework；
There is the pressure-bearing of predetermined amount in the receiving space of first cylinder barrel, second cylinder barrel and/or the force framework
Under fluid, the pressure that pressure vessel detection loading device body is subject to；
The control device receives the pressure and the coupling permeability of the material to be detected is obtained according to preset rules.
10. true triaxial test method according to claim 9, it is characterised in that the pressure vessel detects loading device
The step of pressure that body is subject to, includes：
After preset pressure is forced into two pressure vessels, closing is arranged at the osmotic pressure measuring pump and the loading device
Between bodies top and near the valve arrangement of the osmotic pressure measuring pump；
Two pressure vessels detect the first pressure and the loading device that the loading device body bottom portion is subject to respectively
The second pressure that body bottom portion is subject to.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710029706.4A CN106872330A (en) | 2017-01-16 | 2017-01-16 | True triaxial test method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710029706.4A CN106872330A (en) | 2017-01-16 | 2017-01-16 | True triaxial test method and system |
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| CN201710029706.4A Pending CN106872330A (en) | 2017-01-16 | 2017-01-16 | True triaxial test method and system |
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