CN106769519B - A kind of three axis test method of puppet based on dynamic fatigue test machine - Google Patents
A kind of three axis test method of puppet based on dynamic fatigue test machine Download PDFInfo
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- CN106769519B CN106769519B CN201710126730.XA CN201710126730A CN106769519B CN 106769519 B CN106769519 B CN 106769519B CN 201710126730 A CN201710126730 A CN 201710126730A CN 106769519 B CN106769519 B CN 106769519B
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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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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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
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The three axis test method of puppet based on dynamic fatigue test machine that the invention discloses a kind of, comprising: sample is assembled into sample component as required；Sample component is installed；Filling liquid；Upper electricity operation, is tested, and saves data after the completion of test；Hydraulic oil after completing test, in unloading loading force and blowdown pressure room；Dismantle sample component, off-test；Test method of the present invention is to reequip on the basis of dynamic fatigue test machine to equipment, make it can be under different confining pressures, measure the elastic parameter of rock, and complete strain-gauge test, creep test, relaxation test, and in the case where simulation Original strata stress is horizontal formation testing flow parameter, test the fracture toughness of rock and the Original strata stress on stratum.
Description
Technical field
The invention belongs to rock puppet triaxial test equipment technical fields, are related to a kind of puppet three based on dynamic fatigue test machine
Axis test method.
Background technique
Under natural endowment, the earth's crust and engineering rock mass are deformed and destroy under complicated combined stress state.
Rock mass is a kind of geologic body of complexity, and in complicated 3-D stree field, rock mass damage is often as answering for its preservation
Caused by power state changes.Normal triaxial rock mechanics experiment is typically all to apply certain confining pressure to rock, is then protected
Holding confining pressure constant (i.e. σ 2=σ 3) increase maximum principal stress σ 1 destroys rock, and this test method can only study axial symmetry
Stress state, be not suitable for influence of the intermediate principal stress to rock mass strength and deformation.
Summary of the invention
The technical problem to be solved by the present invention is to, the shortcomings that overcoming the prior art, provides and a kind of tried based on dynamic fatigue
The three axis test method of puppet of machine is tested, test method of the present invention is to reequip on the basis of dynamic fatigue test machine to equipment,
Make it that can measure the elastic parameter of rock, and complete strain-gauge test, creep test, relaxation test under different confining pressures, and
The flow parameter for simulating formation testing under Original strata stress level, tests the fracture toughness of rock and the Original strata stress on stratum.
In order to solve the above technical problems, the present invention provides a kind of three axis test side of puppet based on dynamic fatigue test machine
Method comprises the following specific steps that:
Sample is assembled into sample component by step (1) as required；
Step (2) installs cushion block in pressure chamber base, then sample component is placed on cushion block, and cushion block includes first
Cushion block and the second cushion block, and positioning is attached using straight pin between pressure chamber base, the first cushion block and the second cushion block, and make
The total height for obtaining " cushion block+sample component+upper cushion block+joint bearing block " is 290 ± 20mm, and wherein joint bearing block includes from interior
To the cushion cover, external ball surface and Internal Spherical Surface body successively installed outside；
Pressure chamber's main body is lifted into pressure chamber base, and bearing shell is closed and is locked by step (3), by entire pressure chamber
It is lifted on guide rail, pressure chamber includes pressure chamber's main body and pressure chamber base closed together；
Upload compression leg is clamped on the upper hydraulic chuck of dynamic fatigue test machine by step (4), by lower pressure transmission column precession
Trolley bottom, and trolley is promoted among dynamic fatigue test machine；
Step (5) uploads the difference precession of upper and lower hanging ring in compression leg and lower pressure transmission column, and chain is connected to and is hung above and below
Between ring；
Step (6) slings pressure chamber by the rising of the crossbeam of dynamic fatigue test machine and trolley makes it higher than guide rail, will
Pressure chamber and trolley are rotated by 90 °, then enter lower pressure transmission column in the lower hydraulic chuck of dynamic fatigue test machine by crossbeam decline
And it clamps；
Confining pressure high-voltage tube, filling liquid pipe and exhaust pipe are connected to pressure chamber by step (7), and by pressure chamber's piston hole and
Pedestal oilhole carries out filling liquid；
Step (8), upper electricity operation, and start Hydraulic servo system oil pump load confining pressure, after confining pressure is loaded into specified numerical value,
Axial force can be loaded by dynamic fatigue test machine to be tested, and save data after the completion of test；
Step (9) unloads axial force by dynamic fatigue test machine first after the test, then unloads confining pressure, emptying pressure
Hydraulic oil in power room, and pull out confining pressure high-voltage tube, filling liquid pipe and exhaust pipe；
Step (10) slings pressure chamber and trolley higher than guide rail, by pressure by the crossbeam rising of dynamic fatigue test machine
Room and trolley are rotated by 90 °, then fall in the four wheels of trolley on guide rail by crossbeam decline；
Step (11) disassembles pressure chamber's main body from upload compression leg, and pressure chamber is whole along guide rail release, tears open
It convinces rail by patient analysis, lift pressure chamber's main body and takes out sample component, off-test.
The beneficial effects of the present invention are:
The method of the present invention is based on existing dynamic fatigue test machine, such as: the 2500kN DynamicHost of MTS；It adopts pressure chamber
With high quality alloy steel forging, plating hard chromium on surface, pressure chamber uses self-balance structure, i.e. application confining pressure does not have any shadow to axial force
It rings；Control system uses the original-pack German DO LI Full-digital servo controller of import, which controls precision height, defencive function
Entirely, highly reliable, and the closed-loop control for three kinds of modes such as test force, deformation, displacement may be implemented, while three kinds can be completed
Control mode smoothly switches, and is a kind of ideal controller.Electrohydraulic servo valve uses electro-hydraulic the watching of U.S. MOOG company
Valve is taken, the response valve is fast, contamination resistance is strong.The computer system of testing machine is using state-of-the-art Dell master currently on the market
Machine, software are run under WINDOWS environment, are had good man-machine interface, can be shown confining pressure, pore water pressure, control
A variety of tests such as mode, loading speed and measurement parameter and a variety of trial curves.Test result can be shown after the completion of test,
Tracing analysis is carried out, test report is printed, data export the formats such as text or excel.Also there is advanced controller and electronics
Computer combines, very simple and convenient using operating.
In the method for the present invention, upper hydraulic chuck and lower hydraulic chuck that dynamic fatigue test machine itself has are respectively as adding
Power component and support member.After installing sample, puts cushion block (positioning pin is set between cushion block) well in pressure chamber base, make group
The total height of the sample, cushion block and the joint bearing block three that install are in 290 ± 20mm (the pressure interior space)；By extensometer
Plug is inserted on the socket in pressure chamber base；Pressure chamber's main body is lifted into pressure chamber base, when operation should be noted that pressure
Room main body not encounter other parts, then three clip blocks are closed, on grip ring set；By (including pressure chamber, entire pressure chamber
Main body, pressure chamber base and sample) it is lifted on guide rail；Upload compression leg is clamped in the upper hydraulic chuck of dynamic fatigue test machine
On, by lower pressure transmission column precession pressure chamber's trolley in the following, pressure chamber's trolley is promoted among dynamic fatigue test machine；Use dynamic fatigue
The rising of testing machine crossbeam slings pressure chamber's main body and trolley and is higher than guide rail, and pressure chamber's main body and trolley are rotated by 90 °, then with horizontal
Beam declines in the lower hydraulic chuck for making lower pressure transmission column enter dynamic fatigue test machine and clamps；Extensometer measurement line plug is inserted into
On socket outside pressure chamber base；Confining pressure high-voltage tube, filling liquid pipe and exhaust pipe are connected in pressure chamber, and carry out filling liquid；On
Electricity simultaneously tested by runs software；Start Hydraulic servo system oil pump, adds confining pressure；After confining pressure is added to specified target, so that it may use dynamic
State fatigue tester load axial force is tested；Test is completed to save data；Dynamic fatigue test machine is first used after the test
Confining pressure is unloaded again after unloading axial force；Open the deflation threshold switch (counterclockwise) above pressure chamber；Open connecing below pressure chamber
The valve (inside) of low-voltage tube switchs；Open the A threshold switch on booster cabinet；Press control cabinet panel on charging pump-oil return by
Button, illustrates in pressure chamber empty when having bubble sound in filling liquid oil sources oil drum, presses stop button；By it is upper,
Lower lift ring screws out compression leg and pressure chamber's pressure transmission column respectively, and the lower hydraulic chuck of dynamic fatigue test machine unclamps；To extend measurement
Amount line plug is pulled up from the socket outside pressure chamber base；By confining pressure high-voltage tube, filling liquid pipe and exhaust pipe from pressure chamber's main body
It removes；Pressure chamber's main body is sling with the crossbeam rising of dynamic fatigue test machine and trolley is higher than guide rail, and pressure chamber and trolley are revolved
It turn 90 degrees, then falls in the four wheels of pressure chamber's main body and trolley on guide rail with crossbeam decline；Pressure chamber's main body is removed simultaneously
Take out sample, off-test.
It is axially loaded to be equipped with dynamic fatigue test machine in the present invention, to realize a variety of tests of the rock under normal temperature environment,
It include: to measure the elastic parameter of rock under different confining pressures；Resultant stress, strain-gauge test obtain peak strength and residual strength；
Creep test；Relaxation test；The flow parameter of formation testing in the case where simulation Original strata stress is horizontal；Test the fracture toughness of rock；
The Original strata stress of formation testing；And other various tests under dynamic；Operation of the present invention is simple, performance is stable, experimental data
Accurately, rock puppet triaxial test cost is reduced to a certain extent.
Detailed description of the invention
Fig. 1 is the main view of pressure chamber's closed state of the invention；
Fig. 2 is the lateral plan of pressure chamber's separated position of the invention；
Fig. 3 is the structural schematic diagram of pressure chamber's main body；
Fig. 4 is the structural schematic diagram of pressure chamber base；
Wherein, 1- lower guideway, 2- lower connecting block, the upper link block of 3-, the side's 4- axle, 5- connecting plate, 6- column, the upper pressure transmission of 7-
Column, the pressure chamber 8- main body, 9- pressure chamber base, 10- guide rail, 11- wheel, 12- pillar, hydraulic chuck under 13-, the pressure chamber 801-
Piston, 802- pressure chamber cylinder, the pressure chamber 803- piston hole, 804- screw, 805- cushion cover, 806- external ball surface, 807- Internal Spherical Surface
Body, 808- ball cup, the upper cushion block of 809-, 810- pressure chamber cylinder oilhole, the first sealing ring of 811-, the second sealing ring of 812-, 813-
Transit plug, 814- times of cap, 815- third sealing ring, the 4th sealing ring of 816-, the 5th sealing ring of 817-, the pressure chamber 818- inner cavity；
The first cushion block of 901-, the second cushion block of 902-, 903- straight pin, 904- pedestal, 905- bearing shell, 906- sealing nut, 907- sealing
Bolt, 908- pedestal oilhole, 909- seal stud, the 6th sealing ring of 910-, the 7th sealing ring of 911-.
Specific embodiment
Embodiment 1
The three axis test device of puppet based on dynamic fatigue test machine that the present embodiment provides a kind of, structure is as shown in Figure 1 and Figure 2,
Including column 6,6 upper and lower side of column is respectively corresponded equipped with upper hydraulic chuck and lower hydraulic chuck 13, and upper hydraulic chuck connection uploads
The upper end of compression leg 7, the lower end for uploading compression leg 7 connect upper link block 3, and upper 3 lower end of link block is fixedly installed with pressure chamber's main body 8,
The lower section of pressure chamber's main body 8 is correspondingly provided with pressure chamber base 9, and pressure chamber base 9 is fixedly mounted on trolley, is equipped with below trolley
At least 2 square axles 4, square 4 both ends of axle are separately installed with wheel 11, and wheel 11 is arranged on guide rail 10, the horizontal peace of guide rail 10
Mounted in the middle part of column 6,10 downward vertical of guide rail is equipped with pillar 12, and the lower end of pillar 12 is mounted on lower guideway 1, under lead
Rail 1 is horizontally arranged at the bottom of column 6, and lower connecting block 2 is equipped with below trolley, and lower connecting block 2 is fixedly mounted on by connecting plate 5
On trolley, lower connecting block 2 connects lower hydraulic chuck 13；As shown in figure 3, pressure chamber's main body 8 includes pressure chamber cylinder 802, pressure chamber
802 inside of cylinder is equipped with hollow pressure chamber inner cavity 818；Partition is equipped in pressure chamber inner cavity 818, partition is by pressure chamber inner cavity 818
It is divided into top and cylinder lower part, cylinder lower sides are equipped with pressure chamber cylinder oilhole 810, and partition is equipped with through-hole, cylinder upper interior portion
Equipped with pressure chamber's piston 801, the lower end of pressure chamber's piston 801 passes through the through-hole on partition；In pressure chamber's piston 801 and cylinder top
Times cap 814 and transit plug 813 are successively arranged between wall from top to bottom, is installed on times cap 814 and the contact surface of pressure chamber's piston 801
There is the 5th sealing ring 817, the 4th sealing ring 816, transit plug are installed on transit plug 813 and the contact surface of pressure chamber's piston 801
813 with third sealing ring 815 is installed on the contact surface on cylinder top, installed on pressure chamber's piston 801 and the contact surface on cylinder top
There is the second sealing ring 812, the first sealing ring 811 is installed on the contact surface between pressure chamber's piston 801 and the inner wall of institute's through-hole；
Pressure chamber's piston hole 803 is equipped with inside pressure chamber's piston 801, piston 801 lower end in pressure chamber's, which is located in the inner cavity of cylinder lower part, installs
There is cushion cover 805, external ball surface 806 is installed on cushion cover 805, Internal Spherical Surface body 807, Internal Spherical Surface body are installed on the outside of external ball surface 806
807 lower sections are equipped with ball cup 808, and ball cup 808 is fixedly connected with cushion block 809；As shown in figure 4, pressure chamber base 9 includes pedestal
904, pedestal 904 is equipped with the second cushion block 902, and the second cushion block 902 is equipped with the first cushion block 901, is equipped with axis on the outside of pedestal 904
Watts 905, at least two groups pedestal oilhole 908 is equipped with inside pedestal 904, and pedestal 904 is arranged in the upper end opening of pedestal oilhole 908
On upper surface, the sidewall bottom of pedestal 904, and the lower ending opening of pedestal oilhole 908 is arranged in the lower ending opening of pedestal oilhole 908
Place's installation sealing stud 909 or sealing bolt 907.
It is bolted between aforementioned upper link block 3 and pressure chamber's main body 8.The setting of 12 parallel posts 6 of foregoing pillar.Before
It states guide rail 10 and lower guideway 1 is parallel to each other and position is corresponding.Aforementioned pressure room piston hole 803 is vertically arranged, lower ending opening
Place is equipped with internal screw thread, and pressure chamber's piston hole 803 is additionally provided with upper end opening and sidewall opening.Aforementioned cushion cover 805 is pacified by screw 804
At the lower ending opening of pressure chamber's piston hole 803.Aforementioned first cushion block 901 and the second cushion block 902, the second cushion block 902 and bottom
Between seat 904, it is connected and fixed by straight pin 903.910 He of the 6th sealing ring is installed on 904 outer surface of said base
7th sealing ring 911.Sealing nut 906 is socketed on the outside of aforementioned seal bolt 907, sealing nut 906 is mounted on pedestal oilhole 908
Lower ending opening at.The inside of aforementioned seal nut 906, sealing bolt 907 and sealing stud 909 is to open along its installation direction
The structure in hole.
In the present embodiment device, upper hydraulic chuck and lower hydraulic chuck that dynamic fatigue test machine itself has respectively as
Reinforce component and support member.After installing sample, puts cushion block (positioning pin is set between cushion block) well in pressure chamber base, make
The total height of assembled sample, cushion block and joint bearing block three is in 290 ± 20mm (the pressure interior space)；By extensometer
Plug be inserted on the socket in pressure chamber base；Pressure chamber's main body is lifted into pressure chamber base, when operation should be noted that pressure
Power room main body not encounter other parts, then three clip blocks are closed, on grip ring set；By entire pressure chamber (including pressure
Room main body, pressure chamber base and sample) it is lifted on guide rail；Upload compression leg is clamped in the upper hydraulic clip of dynamic fatigue test machine
On head, by lower pressure transmission column precession pressure chamber's trolley in the following, pressure chamber's trolley is promoted among dynamic fatigue test machine；It is tired with dynamic
Pressure chamber's main body is sling in the rising of labor testing machine crossbeam and trolley is higher than guide rail, and pressure chamber's main body and trolley are rotated by 90 °, then uses
Crossbeam declines in the lower hydraulic chuck for making lower pressure transmission column enter dynamic fatigue test machine and clamps；Extensometer measurement line plug is inserted
On socket outside to pressure chamber base；Confining pressure high-voltage tube, filling liquid pipe and exhaust pipe are connected in pressure chamber, and carry out filling liquid；
It powers on and runs software is tested；Start Hydraulic servo system oil pump, adds confining pressure；After confining pressure is added to specified target, so that it may use
Dynamic fatigue test machine load axial force is tested；Test is completed to save data；Dynamic fatigue test is first used after the test
Confining pressure is unloaded again after machine unloading axial force；Open the deflation threshold switch (counterclockwise) above pressure chamber；It opens below pressure chamber
Connect valve (inside) switch of low-voltage tube；Open the A threshold switch on booster cabinet；Press charging pump-oil return on control cabinet panel
Button, illustrates in pressure chamber empty when having bubble sound in filling liquid oil sources oil drum, presses stop button；It will
Upper and lower hanging ring screws out compression leg and pressure chamber's pressure transmission column respectively, and the lower hydraulic chuck of dynamic fatigue test machine unclamps；By extensometer
Measurement line plug is pulled up from the socket outside pressure chamber base；By confining pressure high-voltage tube, filling liquid pipe and exhaust pipe from pressure chamber's main body
On remove；Pressure chamber's main body is sling with the crossbeam rising of dynamic fatigue test machine and trolley is higher than guide rail, by pressure chamber and trolley
It is rotated by 90 °, then falls in the four wheels of pressure chamber's main body and trolley on guide rail with crossbeam decline；Pressure chamber's main body is removed
And sample is taken out, off-test.
Embodiment 2
The three axis test method of puppet based on dynamic fatigue test machine that the present embodiment provides a kind of, comprises the following specific steps that:
Sample is assembled into sample component by step (1) as required；
Step (2) installs cushion block in pressure chamber base 9, then sample component is placed on cushion block, and cushion block includes the
One cushion block 901 and the second cushion block 902, and straight pin is used between pressure chamber base 9, the first cushion block 901 and the second cushion block 902
903 are attached positioning, and make the total height of " cushion block+sample component+upper cushion block 809+ joint bearing block " be 290 ±
20mm, wherein joint bearing block includes the cushion cover 805, external ball surface 806 and Internal Spherical Surface body 807 successively installed from the inside to the outside；
Pressure chamber's main body 8 is lifted into pressure chamber base 9, and bearing shell 905 is closed and is locked by step (3), will be entire
Pressure chamber is lifted on guide rail, and pressure chamber includes pressure chamber's main body 8 and pressure chamber base 9 closed together；
Upload compression leg 7 is clamped on the upper hydraulic chuck of dynamic fatigue test machine by step (4), by lower pressure transmission column precession
Trolley bottom, and trolley is promoted among dynamic fatigue test machine；
Step (5) uploads the difference precession of upper and lower hanging ring in compression leg 7 and lower pressure transmission column, and chain is connected to and is hung above and below
Between ring；
Step (6) slings pressure chamber by the rising of the crossbeam of dynamic fatigue test machine and trolley makes it higher than guide rail 10,
Pressure chamber and trolley are rotated by 90 °, then the lower hydraulic chuck for making lower pressure transmission column enter dynamic fatigue test machine is declined by crossbeam
In 13 and clamp；
Confining pressure high-voltage tube, filling liquid pipe and exhaust pipe are connected to pressure chamber, and pass through pressure chamber's piston hole by step (7)
803 and pedestal oilhole 908 carry out filling liquid；
Step (8), upper electricity operation, and start Hydraulic servo system oil pump load confining pressure, after confining pressure is loaded into specified numerical value,
Axial force can be loaded by dynamic fatigue test machine to be tested, and save data after the completion of test；
Step (9) unloads axial force by dynamic fatigue test machine first after the test, then unloads confining pressure, emptying pressure
Hydraulic oil in power room, and pull out confining pressure high-voltage tube, filling liquid pipe and exhaust pipe；
Step (10) slings pressure chamber and trolley higher than guide rail 10 by the crossbeam rising of dynamic fatigue test machine, will press
Power room and trolley are rotated by 90 °, then fall in the four wheels of trolley on guide rail by crossbeam decline；
Step (11) disassembles pressure chamber's main body 8 from upload compression leg 7, and pressure chamber's entirety is pushed away along guide rail 10
Out, guide rail 10 is dismantled, pressure chamber's main body 8 is lifted and takes out sample component, off-test.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within.
Claims (1)
1. a kind of three axis test method of puppet based on dynamic fatigue test machine, which is characterized in that comprise the following specific steps that:
Sample is assembled into sample component by step (1) as required；
Step (2) installs cushion block on pressure chamber base (9), then sample component is placed on cushion block, and cushion block includes first
Cushion block (901) and the second cushion block (902), and used between pressure chamber base (9), the first cushion block (901) and the second cushion block (902)
Straight pin (903) is attached positioning, and makes the total height of " cushion block+sample component+upper cushion block (809)+joint bearing block "
For 290 ± 20mm, wherein joint bearing block includes the cushion cover (805), external ball surface (806) and interior ball successively installed from the inside to the outside
Face body (807)；
Pressure chamber's main body (8) is lifted on pressure chamber base (9), and bearing shell (905) is closed and is locked by step (3), will be whole
A pressure chamber is lifted on guide rail, and pressure chamber includes pressure chamber's main body (8) and pressure chamber base (9) closed together；
Upload compression leg (7) is clamped on the upper hydraulic chuck of dynamic fatigue test machine by step (4), and lower pressure transmission column precession is small
Vehicle bottom, and trolley is promoted among dynamic fatigue test machine；
Step (5) uploads the difference precession of upper and lower hanging ring in compression leg (7) and lower pressure transmission column, and chain is connected to upper and lower hanging ring
Between；
Step (6) slings pressure chamber by the rising of the crossbeam of dynamic fatigue test machine and trolley makes it higher than guide rail (10), will
Pressure chamber and trolley are rotated by 90 °, then decline the lower hydraulic chuck for making lower pressure transmission column enter dynamic fatigue test machine by crossbeam
(13) it in and clamps；
Confining pressure high-voltage tube, filling liquid pipe and exhaust pipe are connected to pressure chamber, and pass through pressure chamber's piston hole (803) by step (7)
And pedestal oilhole (908) carries out filling liquid；
Step (8), upper electricity operation, and start Hydraulic servo system oil pump load confining pressure, after confining pressure is loaded into specified numerical value
Axial force is loaded by dynamic fatigue test machine to be tested, and saves data after the completion of test；
Step (9) unloads axial force by dynamic fatigue test machine first after the test, then unloads confining pressure, blowdown pressure room
In hydraulic oil, and pull out confining pressure high-voltage tube, filling liquid pipe and exhaust pipe；
Step (10) slings pressure chamber and trolley higher than guide rail (10), by pressure by the crossbeam rising of dynamic fatigue test machine
Room and trolley are rotated by 90 °, then fall in the four wheels of trolley on guide rail by crossbeam decline；
Step (11) disassembles pressure chamber's main body (8) from upload compression leg (7), and pressure chamber is whole along guide rail (10)
It releases, dismantles guide rail (10), lift pressure chamber's main body (8) and take out sample component, off-test.
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| 《三轴低频循环荷载下盐岩体积应变特性研究》;许宏发 等.;《岩土工程学报》;20150430;第37卷(第4期);第741-746页 |
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| CN106769519A (en) | 2017-05-31 |
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