CN207570982U - A kind of true triaxial Seepage Experiment structure for applying non-uniform load - Google Patents
A kind of true triaxial Seepage Experiment structure for applying non-uniform load Download PDFInfo
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- CN207570982U CN207570982U CN201721652314.5U CN201721652314U CN207570982U CN 207570982 U CN207570982 U CN 207570982U CN 201721652314 U CN201721652314 U CN 201721652314U CN 207570982 U CN207570982 U CN 207570982U
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Abstract
The utility model discloses a kind of true triaxial Seepage Experiment structures for applying non-uniform load, it includes true triaxial loading system, servo-hydraulic loading device（8）And osmotic system, servo-hydraulic loading device（8）Axis pressure loading device（9）It is connect with the axial stress charging assembly of true triaxial loading system by pipeline；Servo-hydraulic loading device（8）Confining pressure loading device（10）It is connect with the lateral stress charging assembly and longitudinal stress charging assembly of true triaxial loading system by pipeline；Osmotic system includes gas pot（1）, gas pot（1）Output channel（49）It is extend into the experiment cavity of true triaxial loading system from top, the experiment cavity bottom end of true triaxial loading system connects flowmeter by pipeline（24）；It solves the true triaxial seepage apparatus that the true triaxial equipment of the prior art can not apply non-uniform load, the technical problems such as the true triaxial seepage research of non-uniform load can not be carried out using current existing three axis seepage flow equipment.
Description
Technical field
The utility model belongs to gas management experimental apparatus technical field more particularly to a kind of applies the true of non-uniform load
Three axis Seepage Experiment structures.
Background technology
With the continuous improvement of pit mining depth and intensity, with the relevant mine motive force disaster accident of coal petrography unstable failure
It is on the rise.Coal petrography is a kind of natural heterogeneous anisotropic material, and intensity is main in addition to being influenced by itself component and structure
It to be influenced by ground stress environment.Practical Project coal and rock experienced from the stress of primary rock, that axial stress is increased to stress field is inside
The complete of portion's transfer adopts dynamic process, and coal petrography is under un-uniformly distributed effect, and ambient stress is more complicated, coal seam watt
This flowing complexity has important engineering significance for coal mine gas drainage, and the flowing of gas is limited by oozing for coal petrography
Saturating characteristic, since the ambient stress of coal seam institute preservation is more complicated, the change of stress state causes the hole of coal petrography, crack to be sent out
Changing so as to change flow behavior of the gas in coal petrography therefore, therefore studies the lower coal petrography infiltration of un-uniformly distributed effect
Feature has more practical significance, and true triaxial equipment carries out experiment of machanics and Seepage Experiment under uniform load under true triaxial more at present,
There are no the true triaxial seepage apparatus that can apply non-uniform load, therefore it is non-to utilize current existing three axis seepage flow equipment that can not carry out
The true triaxial seepage research of uniform load.
Utility model content：
The technical problems to be solved in the utility model：A kind of true triaxial Seepage Experiment knot for applying non-uniform load is provided
Structure carries out experiment of machanics and Seepage Experiment under uniform load under true triaxial to solve the true triaxial equipment of the prior art more, does not have also
The true triaxial seepage apparatus of non-uniform load can be applied by having, therefore it is non-uniformly distributed to utilize current existing three axis seepage flow equipment that can not carry out
The technical problems such as the true triaxial seepage research of load.
Technical solutions of the utility model：
A kind of true triaxial Seepage Experiment structure for applying non-uniform load, it includes true triaxial loading system, servo-hydraulic
Loading device and osmotic system, the axis pressure loading device and the axial stress of true triaxial loading system of servo-hydraulic loading device add
Component is carried to connect by pipeline；The confining pressure loading device and the lateral stress of true triaxial loading system of servo-hydraulic loading device add
Component is carried to connect by pipeline with longitudinal stress charging assembly；Osmotic system includes gas pot, and the output channel of gas pot is from top
End is extend into the experiment cavity of true triaxial loading system, and the experiment cavity bottom end of true triaxial loading system passes through pipeline connection flow
Gauge.
The first pressure reducing valve and first pressure gauge are sequentially installed on the output channel of the gas pot.
The second pressure reducing valve and second pressure gauge are connected in turn on axis pressure loading device output channel；Confining pressure loading device is defeated
Go out on pipeline to be connected in turn third pressure reducing valve and third pressure gauge.
True triaxial loading system includes lower plate and upper plate, and confining pressure cavity is fixed on lower plate, and upper plate is fixed on
Confining pressure cavity）Top；Lower plate upper surface is fixed with axial backing plate, and experiment cavity is fixed on axial backing plate；Test cavity body is located at
In confining pressure cavity；Experiment cavity is the first left confining pressure plate, the second left confining pressure plate, the first right confining pressure plate, the second right confining pressure plate, first
Confining pressure, the first shaft pressuring plate and the second shaft pressuring plate form after front wall pressing plate, the second front wall pressing plate, the first back wall pressing plate, second one
A square or rectangular parallelepiped structure；Coal petrography sample is placed in test cavity body.
The axial stress charging assembly includes first axle compressing cylinder and the second axis compressing cylinder, first axle compressing cylinder and second
Axis compressing cylinder is fixed on upper plate, and the output terminal of first axle compressing cylinder and the second axis compressing cylinder is each passed through upper plate and first
Shaft pressuring plate and the second shaft pressuring plate are fixedly connected；Second axis of the first axis oil inlet pipe of first axle compressing cylinder and the second axis compressing cylinder
Output channel to oil inlet pipe respectively with axis pressure loading device is connect.
Lateral stress charging assembly includes the first left confining pressure oil cylinder, the second left confining pressure oil cylinder, the first right confining pressure oil cylinder and the
Two right confining pressure oil cylinders；First left confining pressure oil cylinder and the second left confining pressure oil cylinder are fixed on the left of confining pressure cavity, the first left confining pressure oil cylinder
It is each passed through on the left of confining pressure cavity with the output terminal of the second left confining pressure oil cylinder and is fixed with the first left confining pressure plate and the second left confining pressure plate
Connection；First right confining pressure oil cylinder and the second right confining pressure oil cylinder are fixed on the right side of confining pressure cavity, the first right confining pressure oil cylinder and second right side
The output terminal of confining pressure oil cylinder is each passed through on the right side of confining pressure cavity and is fixedly connected with the first right confining pressure plate and the second right confining pressure plate；First
First left confining pressure oil inlet pipe of left confining pressure oil cylinder, the second left confining pressure oil inlet pipe of the second left confining pressure oil cylinder, the first right confining pressure plate
Second right confining pressure oil inlet pipe of the first right confining pressure oil inlet pipe and the second right confining pressure oil cylinder efferent duct with confining pressure loading device respectively
Road connects.
Longitudinal stress charging assembly includes the first front wall compressing cylinder, the second front wall compressing cylinder, the first back wall pressure oil and second
Back wall compressing cylinder；First front wall compressing cylinder and the second front wall compressing cylinder are fixed on front side of confining pressure cavity, the first front wall compressing cylinder and
The output terminal of second front wall compressing cylinder, which is each passed through on front side of confining pressure cavity to fix with the first front wall pressing plate and the second front wall pressing plate, to be connected
It connects；First back wall compressing cylinder and the second back wall compressing cylinder are fixed on rear side of confining pressure cavity；First back wall compressing cylinder and the second back wall
The output terminal of compressing cylinder is fixedly connected after being each passed through on rear side of confining pressure cavity with the first back wall pressing plate and the second back wall pressing plate；First
First front wall of front wall compressing cylinder is pressed into oil pipe, the second front wall of the second front wall compressing cylinder is pressed into oil pipe, the first back wall compressing cylinder
The first back wall be pressed into oil pipe and the second back wall of the second back wall compressing cylinder is pressed into output of the oil pipe respectively with confining pressure loading device
Pipeline connects.
The beneficial effects of the utility model：
The utility model adjusts the pressure reducing valve on output pipe, can pass through each oil cylinder by servo-hydraulic loading device
Apply non-uniform load, environment that can be residing in more real simulation coal seam coal seam with gas recovery process, the utility model energy
More accurately grasping the mechanism of coal seam with gas seepage effect and experimental study has important meaning and value, and the utility model uses
Respectively to load independence SERVO CONTROL, complicated stress environment can be carried out, can be the base of true triaxial stand under load coal seam with gas seepage effect
Plinth theory and mechanism study provide more fully laboratory facilities, environment that can more residing for real simulation coal seam with gas, to more
The accurate mechanism for grasping coal seam with gas seepage effect and experimental study have important meaning and value, and the experimental provision is simply easy
Operation, using effect is good, easy to spread；The true triaxial equipment for solving the prior art carries out under experiment of machanics and true triaxial more
Seepage Experiment under cloth load there are no the true triaxial seepage apparatus that can apply non-uniform load, therefore utilizes current existing three axis
Seepage flow equipment can not carry out the technical problems such as the true triaxial seepage research of non-uniform load.
Description of the drawings：
Fig. 1 the utility model structure diagrams；
Fig. 2 is the utility model confining pressure cavity overlooking the structure diagram.
In figure：1- gas pots, the first pressure reducing valves of 2-, 3- first pressure gauges, 4- second pressure gauges, the second pressure reducing valves of 5-, 6-
Third pressure gauge, 7- thirds pressure reducing valve, 8- servo-hydraulics loading device, 9- axis pressure loading device, 10- confining pressures loading device,
11- first axles compressing cylinder, 12- first axis oil inlet pipe, the second axis of 13- compressing cylinder, the second axial fuel inlets of 14- pipe, 15- first axles
Pressing plate, 16- upper plates, the second shaft pressuring plates of 17-, the first left confining pressure oil inlet pipes of 18-, the first left confining pressure oil cylinders of 19-, 20- first are left
Confining pressure plate, 21- axial directions backing plate, the first right confining pressure oil inlet pipes of 22-, the first right confining pressure oil cylinders of 23-, 24- flowmeters, 25- first are right
Confining pressure plate, 26- confining pressures cavity, the first front walls of 27- compressing cylinder, the first front walls of 28- be pressed into oil pipe, the second front walls of 29- compressing cylinder,
The second front walls of 30- be pressed into oil pipe, the second left confining pressure oil cylinders of 31-, the second left confining pressure oil inlet pipes of 32-, the second right confining pressure oil cylinders of 33-,
The second right confining pressure oil inlet pipes of 34-, the first back walls of 35- compressing cylinder, the first back walls of 36- are pressed into oil pipe, the second back walls of 37- are pressed into oil
Pipe, the second back walls of 38- compressing cylinder, the second left confining pressure plates of 39-, the second right confining pressure plates of 40-, the first back walls of 41- pressing plate, 42- second
Back wall pressing plate, the first front walls of 43- pressing plate, 44 second front wall pressing plates, 45- lower plates, 46- axial stresses charging assembly, 47- are lateral
Stress loading component, 48- longitudinal stresses charging assembly, 49- output channels.
Specific embodiment：
In order to which those skilled in the art further appreciate that technical solutions of the utility model, in conjunction with attached drawing to the utility model
Technical solution illustrates：
A kind of true triaxial Seepage Experiment structure for applying non-uniform load, it includes true triaxial loading system, servo-hydraulic
Loading device and osmotic system, the axis pressure loading device 9 of servo-hydraulic loading device 8 and the axial stress of true triaxial loading system
Charging assembly is connected by pipeline；The confining pressure loading device 10 of servo-hydraulic loading device 8 and the transverse direction of true triaxial loading system
Stress loading component is connected with longitudinal stress charging assembly by pipeline；Osmotic system includes gas pot 1, the output of gas pot 1
Pipeline 49 is extend into from top in the experiment cavity of true triaxial loading system, and the experiment cavity bottom end of true triaxial loading system passes through
Pipeline connects flowmeter 24.
The first pressure reducing valve 2 and first pressure gauge 3 are sequentially installed on the output channel 49 of the gas pot 1.
The second pressure reducing valve 5 and second pressure gauge 4 are connected in turn on axis pressure loading device output channel；Confining pressure loading device
It is connected with third pressure reducing valve 7 and third pressure gauge 6 on 10 output channels in turn.
True triaxial loading system includes lower plate 45 and upper plate 16, and confining pressure cavity 26 is fixed on lower plate 45, upper top
Plate 16 is fixed on 26 top of confining pressure cavity；45 upper surface of lower plate is fixed with axial backing plate 21, and experiment is fixed on axial backing plate 21
Cavity；Test cavity body is located in confining pressure cavity 26；Experiment cavity is the first left confining pressure plate 20, the second left confining pressure plate 39, first is right
Confining pressure plate 25, the second right confining pressure plate 40, the first front wall pressing plate 43, the second front wall pressing plate 44, the first back wall pressing plate 41, the second back wall
A square or rectangular parallelepiped structure for pressing plate 41, the first shaft pressuring plate 15 and the second shaft pressuring plate 17 composition；It is placed in test cavity body
There is coal petrography sample.
The axial stress charging assembly includes 11 and second axis compressing cylinder 13 of first axle compressing cylinder, first axle compressing cylinder 11
It is fixed on upper plate 16 with the second axis compressing cylinder 13, the output terminal of 11 and second axis compressing cylinder 13 of first axle compressing cylinder is worn respectively
Upper plate 16 is crossed to be fixedly connected with the first shaft pressuring plate 15 and the second shaft pressuring plate 17；The first axis oil inlet pipe of first axle compressing cylinder 11
12 and second axis compressing cylinder 13 the second axial fuel inlet pipe 14 respectively with axis pressure loading device 9 output channel connect.
Lateral stress charging assembly includes the first left confining pressure oil cylinder 19, the second left confining pressure oil cylinder 31, the first right confining pressure oil cylinder
23 and the second right confining pressure oil cylinder 33；First left 19 and second left confining pressure oil cylinder 31 of confining pressure oil cylinder is fixed on 26 left side of confining pressure cavity,
First left confining pressure oil cylinder（19）26 left side of confining pressure cavity is each passed through with the output terminal of the second left confining pressure oil cylinder 31 to enclose with first left side
Pressing plate 20 is fixedly connected with the second left confining pressure plate 39；First right 23 and second right confining pressure oil cylinder 33 of confining pressure oil cylinder is fixed on confining pressure chamber
26 right side of body, the output terminal of the first right 23 and second right confining pressure oil cylinder 33 of confining pressure oil cylinder are each passed through on the right side of confining pressure cavity and first
Right confining pressure plate 25 is fixedly connected with the second right confining pressure plate 40；First left confining pressure oil inlet pipe 18, second of the first left confining pressure oil cylinder 19
Second left confining pressure oil inlet pipe 32 of left confining pressure oil cylinder 31, the first of the first right confining pressure plate 25 the right 22 and second right confining pressure of confining pressure oil inlet
Output channel of the second right confining pressure oil inlet pipe 34 of oil cylinder 33 respectively with confining pressure loading device 10 is connect.
Longitudinal stress charging assembly includes the first front wall compressing cylinder 27, the second front wall compressing cylinder 29, the first back wall compressing cylinder
35 and the second back wall compressing cylinder 38；First front wall compressing cylinder 27 and the second front wall compressing cylinder 29 are fixed on 26 front side of confining pressure cavity,
The output terminal of first front wall compressing cylinder 27 and the second front wall compressing cylinder 29 is each passed through confining pressure before 26 front side of confining pressure cavity and first
Plate 43 is fixedly connected with confining pressure before second 44；First back wall compressing cylinder 35 and the second back wall compressing cylinder 38 are fixed on confining pressure cavity 26
Rear side；The output terminal of first back wall compressing cylinder 35 and the second back wall compressing cylinder 38 is each passed through after the rear side of confining pressure cavity 26 and first
Back wall pressing plate 41 is fixedly connected with the second back wall pressing plate 42；First front wall of the first front wall compressing cylinder 27 is pressed into oil pipe 28, second
After second front wall of front wall compressing cylinder 29 is pressed into oil pipe 30, the first back wall of the first back wall compressing cylinder 35 is pressed into oil pipe 36 and second
Second back wall of confining pressure oil cylinder 38 is pressed into output channel of the oil pipe 37 respectively with confining pressure loading device 10 and connect.
In use, preparing coal petrography sample first, and coal petrography sample is packaged, and coal body sample is mounted on test cavity
In vivo, by the way that the axis in servo-hydraulic loading device 8 is controlled to press loading device 9 and confining pressure loading device 10, pass through control second
Pressure reducing valve 5, so as to first control longitudinal stress charging assembly 48, utilizes the first front wall pressing plate 43, the second front wall with third pressure reducing valve 7
Pressing plate 44, the first back wall pressing plate 41, the second back wall pressing plate 42 carry out micro- power clamping to sample, then control lateral stress loading group
Part 47, using the first left confining pressure plate 20, the second left confining pressure plate 39, the first right confining pressure plate 25, the second right confining pressure plate 40 to sample into
Row micro- power clamping finally controls axial stress loading component 46, using the first shaft pressuring plate 15 and the second shaft pressuring plate 17 to sample into
The micro- power clamping of row, then by controlling axial stress loading component 46, lateral stress charging assembly 47, longitudinal stress charging assembly
48 pairs of coal samples carry out the loading of non-uniform load, open gas pot 1, control the first pressure reducing valve 2 and read the reading of first pressure gauge 3
Number makes the gas under setting pressure pass sequentially through 49 seepage flow of gas-guide tube across coal petrography sample, then successively so that it is determined that gas pressure
Entered in gas flowmeter 24 by gas-guide tube 49, record the data on flows in gas flowmeter 24, while record at this time
Each stress pressure value, and then complete the coal petrography true triaxial seepage flow test under non-uniform load.
Claims (7)
1. a kind of true triaxial Seepage Experiment structure for applying non-uniform load, it includes true triaxial loading system, and servo-hydraulic adds
It carries and puts（8）And osmotic system, it is characterised in that：Servo-hydraulic loading device（8）Axis pressure loading device（9）With true triaxial plus
The axial stress charging assembly of loading system is connected by pipeline；Servo-hydraulic loading device（8）Confining pressure loading device（10）With
The lateral stress charging assembly of true triaxial loading system is connected with longitudinal stress charging assembly by pipeline；Osmotic system include watt
This tank（1）, gas pot（1）Output channel（49）It is extend into the experiment cavity of true triaxial loading system from top, true triaxial
The experiment cavity bottom end of loading system connects flowmeter by pipeline（24）.
2. a kind of true triaxial Seepage Experiment structure for applying non-uniform load according to claim 1, it is characterised in that：Institute
State gas pot（1）Output channel（49）On be sequentially installed with the first pressure reducing valve（2）And first pressure gauge（3）.
3. a kind of true triaxial Seepage Experiment structure for applying non-uniform load according to claim 1, it is characterised in that：Axis
Press loading device（9）It is connected with the second pressure reducing valve on output channel in turn（5）And second pressure gauge（4）；Confining pressure loading device
（10）It is connected with third pressure reducing valve on output channel in turn（7）With third pressure gauge（6）.
4. a kind of true triaxial Seepage Experiment structure for applying non-uniform load according to claim 1, it is characterised in that：Very
Three axis loading systems include lower plate（45）And upper plate（16）, confining pressure cavity（26）It is fixed on lower plate（45）On, upper plate
（16）It is fixed on confining pressure cavity（26）Top；Lower plate（45）Upper surface is fixed with axial backing plate（21）, axial backing plate（21）On
Fixed experiment cavity；Test cavity body is located at confining pressure cavity（26）It is interior；Experiment cavity is the first left confining pressure plate（20）, the second left confining pressure
Plate（39）, the first right confining pressure plate（25）, the second right confining pressure plate（40）, the first front wall pressing plate（43）, the second front wall pressing plate（44）,
One back wall pressing plate（41）, the second back wall pressing plate（41）, the first shaft pressuring plate（15）With the second shaft pressuring plate（17）One pros of composition
Body or rectangular parallelepiped structure；Coal petrography sample is placed in test cavity body.
5. a kind of true triaxial Seepage Experiment structure for applying non-uniform load according to claim 4, it is characterised in that：Institute
It states axial stress charging assembly and includes first axle compressing cylinder（11）With the second axis compressing cylinder（13）, first axle compressing cylinder（11）With
Two axis compressing cylinders（13）It is fixed on upper plate（16）On, first axle compressing cylinder（11）With the second axis compressing cylinder（13）Output terminal point
It Chuan Guo not upper plate（16）With the first shaft pressuring plate（15）With the second shaft pressuring plate（17）It is fixedly connected；First axle compressing cylinder（11）
One axial fuel inlet pipe（12）With the second axis compressing cylinder（13）The second axial fuel inlet pipe（14）Respectively loading device is pressed with axis（9）'s
Output channel connects.
6. a kind of true triaxial Seepage Experiment structure for applying non-uniform load according to claim 4, it is characterised in that：It is horizontal
Include the first left confining pressure oil cylinder to stress loading component（19）, the second left confining pressure oil cylinder（31）, the first right confining pressure oil cylinder（23）With
Second right confining pressure oil cylinder（33）；First left confining pressure oil cylinder（19）With the second left confining pressure oil cylinder（31）It is fixed on confining pressure cavity（26）It is left
Side, the first left confining pressure oil cylinder（19）With the second left confining pressure oil cylinder（31）Output terminal be each passed through confining pressure cavity（26）Left side and the
One left confining pressure plate（20）With the second left confining pressure plate（39）It is fixedly connected；First right confining pressure oil cylinder（23）With the second right confining pressure oil cylinder
（33）It is fixed on confining pressure cavity（26）Right side, the first right confining pressure oil cylinder（23）With the second right confining pressure oil cylinder（33）Output terminal difference
Across confining pressure cavity（26）Right side and the first right confining pressure plate（25）With the second right confining pressure plate（40）It is fixedly connected；First left confining pressure oil
Cylinder（19）The first left confining pressure oil inlet pipe（18）, the second left confining pressure oil cylinder（31）The second left confining pressure oil inlet pipe（32）, it is first right
Confining pressure plate（25）The first right confining pressure oil inlet pipe（22）With the second right confining pressure oil cylinder（33）The second right confining pressure oil inlet pipe（34）Point
Not with confining pressure loading device（10）Output channel connection.
7. a kind of true triaxial Seepage Experiment structure for applying non-uniform load according to claim 4, it is characterised in that：It is vertical
Include the first front wall compressing cylinder to stress loading component（27）, the second front wall compressing cylinder（29）, the first back wall compressing cylinder（35）With
Second back wall compressing cylinder（38）；First front wall compressing cylinder（27）With the second front wall compressing cylinder（29）It is fixed on confining pressure cavity（26）Before
Side, the first front wall compressing cylinder（27）With the second front wall compressing cylinder（29）Output terminal be each passed through confining pressure cavity（26）Front side and the
One front wall pressing plate（43）With the second front wall pressing plate（44）It is fixedly connected；First back wall compressing cylinder（35）With the second back wall compressing cylinder
（38）It is fixed on confining pressure cavity（26）Rear side；First back wall compressing cylinder（35）With the second back wall compressing cylinder（38）Output terminal difference
Across confining pressure cavity（26）After rear side with the first back wall pressing plate（41）With the second back wall pressing plate（42）It is fixedly connected；Confining pressure before first
Oil cylinder（27）The first front wall be pressed into oil pipe（28）, the second front wall compressing cylinder（29）The second front wall be pressed into oil pipe（30）, first
Back wall compressing cylinder（35）The first back wall be pressed into oil pipe（36）With the second back wall compressing cylinder（38）The second back wall be pressed into oil pipe
（37）Respectively with confining pressure loading device（10）Output channel connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721652314.5U CN207570982U (en) | 2017-12-01 | 2017-12-01 | A kind of true triaxial Seepage Experiment structure for applying non-uniform load |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721652314.5U CN207570982U (en) | 2017-12-01 | 2017-12-01 | A kind of true triaxial Seepage Experiment structure for applying non-uniform load |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907467A (en) * | 2017-12-01 | 2018-04-13 | 贵州大学 | A kind of true triaxial seepage experimental apparatus for applying non-uniform load |
| CN110196191A (en) * | 2019-05-28 | 2019-09-03 | 河南理工大学 | The multiaxial experiment device of material damage feature under a kind of analog complex stress condition |
| CN111579382A (en) * | 2020-04-10 | 2020-08-25 | 中国石油大港油田勘探开发研究院 | True triaxial experiment device and method capable of simulating radial pressure |
-
2017
- 2017-12-01 CN CN201721652314.5U patent/CN207570982U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907467A (en) * | 2017-12-01 | 2018-04-13 | 贵州大学 | A kind of true triaxial seepage experimental apparatus for applying non-uniform load |
| CN110196191A (en) * | 2019-05-28 | 2019-09-03 | 河南理工大学 | The multiaxial experiment device of material damage feature under a kind of analog complex stress condition |
| CN111579382A (en) * | 2020-04-10 | 2020-08-25 | 中国石油大港油田勘探开发研究院 | True triaxial experiment device and method capable of simulating radial pressure |
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