CN108051320A - Rock fracture creep test system under the influence of a kind of temperature - Google Patents
Rock fracture creep test system under the influence of a kind of temperature Download PDFInfo
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- CN108051320A CN108051320A CN201711248231.4A CN201711248231A CN108051320A CN 108051320 A CN108051320 A CN 108051320A CN 201711248231 A CN201711248231 A CN 201711248231A CN 108051320 A CN108051320 A CN 108051320A
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- 239000011435 rock Substances 0.000 title claims abstract description 56
- 238000012360 testing method Methods 0.000 title claims abstract description 52
- 238000006073 displacement reaction Methods 0.000 claims abstract description 35
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000011888 foil Substances 0.000 claims description 11
- 239000003208 petroleum Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 abstract 1
- 238000001764 infiltration Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- 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
- G01N3/28—Investigating ductility, e.g. suitability of sheet metal for deep-drawing or spinning
-
- 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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
-
- 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
-
- 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
-
- 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
- G01N2203/0071—Creep
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Dispersion Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to rock fracture creep test system under the influence of a kind of temperature, including main machine frame, test cabinet, movable agency, seepage apparatus and displacement monitor;The main machine frame includes pedestal and increased pressure board, and test cabinet is installed on the pedestal, and the test cabinet is interior to place the cube rock fracture sample for being used for test, and increased pressure board is connected at the top of the sample, displacement sensor is installed on the increased pressure board.The present invention has good seal performance, and rock fracture creep properties can be tested under different stress, temperature, infiltration condition.
Description
Technical field
The invention belongs to rock mechanics fields, and in particular to rock fracture creep test system under the influence of a kind of temperature.
Background technology
In Practical Project, the creep properties of rock is the one of the major reasons for causing wprks and unstability, studies rock
The creep properties of stone has great importance for the assessment of rock mass engineering project long-term reliability.In addition, creep strain increases with temperature
And increase, such as by the case that heat affecting or nuclear energy influenced, the creep properties of rock will generate large change, therefore open
Open up has substantive significance in relation to temperature factor on the research that rock fracture creep properties influences.In labs on rock
The experimental study of creep properties can not only help us to understand rock in depth under condition of different temperatures, different stress
Creep properties, moreover it is possible to which the support of basic data is provided for practical engineering application.
Usually containing crack and phenomena such as with seepage flow inside natural rock, these cracks are the planes of weakness in rock,
Control action is played to the property of rock entirety, it is necessary to the pointedly creep properties in study of rocks crack.Although however, mesh
The Chinese invention patent application of preceding existing Application No. 201510278202.7《The three axis seepage stress temperature based on digital picture
Spend creep coupling experiment device》, but this device is concerned with the creep properties of coal, rock mass under stress, temperature action, it is impossible to
It is studied specifically for creep properties of the rock fracture under temperature action.In addition, in the presence of underground water, rock
The creep properties in crack will be influenced be subject to water rock chemical reaction, it is therefore necessary to the effect of seepage flow is considered in creep test.
The content of the invention
This invention address that rock fracture creep test system under the influence of a kind of temperature is developed, in order to break through existing experiment side
Method and device can not consider the problems of the creep properties of rock fracture and the collective effect of seepage flow and temperature.
To achieve the above object, the specifically disclosed technical solution of the present invention is:Rock fracture creep under the influence of a kind of temperature
Pilot system, including main machine frame, test cabinet, hydraulic packing system, seepage apparatus, displacement monitor, thermostat;It is described
Main machine frame includes pedestal, top plate and increased pressure board, and test cabinet is fixedly mounted between the pedestal and top plate, is put in the test cabinet
The cube rock fracture sample for test is put, increased pressure board is connected at the top of the sample, installing displacement on the increased pressure board passes
Sensor, the sample are located in thermostat.
Further, the test cabinet is made of 4 blocks of side plates all around, and the side plate is bolted on pedestal and top
Between plate.
Further, the hydraulic packing system includes rubber sleeve, oil pocket, petroleum pipeline, oil pump;Rubber sleeve covers the interior of side plate
Side, and certain space is reserved as oil pocket between side plate and rubber sleeve, reserving hole connection petroleum pipeline on side plate, petroleum pipeline and
Oil pump is connected, and the oiling into oil pocket by oil pump makes rubber sleeve be close to sample so as to seal crack.
Further, the seepage apparatus includes front side collecting chamber and rear side collecting chamber made of high-strength transparent material, water
Pressure sensor, flow sensor and water pipe;Strip opening is left in the middle part of front side board and back side panel, front side collecting chamber passes through bolt
On front side board, and opening is wrapped, rear side collecting chamber is mounted on by bolt on back side panel, and wraps opening;Before
Water injection hole and water-pressure survey hole are left on the collecting chamber of side, apopore and water-pressure survey hole are left on rear side collecting chamber;Flow-velocity sensing
Device connects water injection hole by water pipe;Hydraulic pressure sensor passes through the displacement monitor.
Further, the hydraulic pressure sensor includes displacement sensor, data collector connects water-pressure survey hole with water pipe.
Further, opening is left on the thermostat top plate to be further applied load to top plate convenient for jack, side is left out
Mouth is used to export petroleum pipeline and water pipe from insulating box, and opening is equipped with sealing ring to ensure the steady temperature in insulating box.
Further, the displacement monitor includes displacement sensor, foil gauge, data collector and computer;Displacement passes
Sensor, which is mounted on, to be added on pedestal, measures the displacement of sample in real time;Foil gauge is attached to the block both sides up and down of rock fracture sample, real
When measure rock block strain;Displacement sensor is connected with computer with automatic collection displacement with foil gauge by data collector
Data.
Beneficial effects of the present invention are mainly manifested in:
First, it is long-term under the conditions of different temperatures, different stress and different seepage flow that rock fracture can accurately be measured
Deformation characteristic;
2nd, the position of rubber sleeve can be adjusted by hydraulic packing system, convenient for being put into rock sample, and is applied enough
Lateral restriction ensures the leakproofness of device;
3rd, using collecting chamber component, water is injected from single water injection hole, full of can uniformly be flowed into after cavity in crack,
So as to simulate the seepage flow situation in true rock fracture.
4th, by thermostat, the creep properties in the crack under different steady temperatures can be tested.
Description of the drawings
Fig. 1 is front view when not loading;Fig. 2 is sectional view when not loading;Fig. 3 is 3-D view when not loading;
Fig. 4 is foil gauge layout drawing;Fig. 5 is insulating box graphics;Fig. 6 is rubber sleeve schematic diagram;Fig. 7 is collecting chamber front view.
In Fig. 1-5,1- pedestals;2- test cabinet left plates;Collecting chamber on the left of 3-;4- rubber sleeves;5- oil pockets;6- tests ceiling
Plate;7- pressure heads;8- displacement sensors;9- increased pressure boards;Collecting chamber on the right side of 10-;11- fixing bolts;12- test cabinet right plates;13-
Test cabinet;14- water injection holes;15- water-pressure survey hole;16- test cabinet back side panels;17- test cabinet front side boards;18- rock samples;
19- rock fractures;20- foil gauges;21- pressurization windows;22- observation windows;23- pipe holes;24- apopores;30- main machine frames;40-
Test cabinet;50- movable agencies;60- seepage apparatus;70- displacement monitors.
Specific embodiment
As shown in Figs. 1-5, rock fracture creep test system under the influence of a kind of temperature, including main machine frame 30, test cabinet
13rd, movable agency 50, seepage apparatus 60 and displacement monitor 70;The main machine frame 30 includes pedestal 1 and increased pressure board 10, institute
Installation test cabinet 40 on pedestal 1 is stated, the cube rock fracture sample for test, the sample are placed in the test cabinet 40
Top connects increased pressure board 10, and displacement sensor 8 is installed on the increased pressure board 10.
As shown in Figure 1, the main machine frame 30 includes pedestal 1, test cabinet top plate 6 and increased pressure board 9, the pedestal 1 is with surveying
The test collectively formed by test cabinet left plate 2, right plate 12, back side panel 16, front side board 17 is fixedly mounted between examination ceiling plate 6
Room 13, the interior cube rock fracture sample 18 placed for test of the test cabinet 13, the test cabinet top plate 6 connect pressure head
7,7 top of pressure head connects increased pressure board 9, installs displacement sensor 8 on the pedestal 1, the increased pressure board 9 bears external equipment
The pressure of offer carries out creep test.
As shown in figure 5, the thermostat is insulating box, including pressurization window 21, observation window 22 and pipe hole 23.Jack
By pressurizeing, window 21 pressurizes to the experimental rig in insulating box, and the observation window 22 shows for observing insulating box closed test
As leaving pipe hole 23, water pipe and petroleum pipeline on insulating box and passing through 23 joint test device of pipe hole.
As shown in Fig. 2, the hydraulic seal device includes rubber sleeve 4, oil pocket 5, petroleum pipeline and oil pump.The rubber sleeve 4
Side plate interior sides are covered in, and certain length is reserved on four sides, rubber sleeve 4 is fixed on side plate convenient for passing through high-strength glue, is reached
To the effect of package side plate, the oil pocket 5 is between rubber sleeve 4 and side plate, and oil pump by petroleum pipeline, produce by the oiling into oil pocket 5
Oil generation is pressed so that rubber sleeve 4 is close to rock fracture 19, plays sealing effect.
As shown in fig. 6, four sides side plate interior sides post rubber sleeve 4, test cabinet left plate 2, right plate 12, back side panel 16,
Front side board 17 is fixed on pedestal, is fixed it two-by-two with bolt between adjacent side plates, and 4 blocks of side plates are filled by adjusting hydraulic packing
Clamping sample is put, so that rubber sleeve 4 is close to crack 19, ensures leakproofness.
The seepage apparatus 60, including left side collecting chamber 3, right side collecting chamber 10, water injection hole 14, water-pressure survey hole 15 goes out
Water hole 24.Strip opening is left at left plate 2 and 12 middle part of right plate, and left side collecting chamber 3 is mounted on left plate 2 by bolt
On, and opening is wrapped, right side collecting chamber 10 is mounted on by bolt 12 on right plate, and wraps opening;Left side collecting chamber 3
On leave water-pressure survey hole 15 and water injection hole 14, water-pressure survey hole 15 and apopore 24 are left on right side collecting chamber 10.Water passes through
Water injection hole 14 enters left side collecting chamber 3, after collecting chamber 3, right side collecting chamber 10 is flowed by rock fracture 19, finally from going out
24 bleeder of water hole.The high intensity transparent material such as polyimides can be used in collecting chamber, convenient for being seen to internal experimental phenomena
It examines.Water injection hole 14 is connected by water pipe with external pump, and apopore 24 is connected by water pipe with flow sensor;Water-pressure survey hole
15 are connected with hydraulic pressure sensor.
The displacement monitor 70 includes displacement sensor 8, foil gauge 20, data collector and computer.Displacement sensing
Device 8 is located on pedestal 1, connects with data collector and computer, for monitoring the displacement of sample entirety in real time;Foil gauge 20 pastes
In the block both sides up and down of rock fracture sample 18, the strain of rock block 18 is measured in real time;The displacement of sample entirety subtracts block
The deflection of body is the deflection that can obtain rock fracture.
The concrete application of the present embodiment:
Creep test under the conditions of constant high temperature.The temperature (such as constant at 80 DEG C) of thermostatic chamber is regulated, by rock fracture
Sample is placed in test cabinet, is remained unchanged after applying certain normal stress, and displacement data, profit are gathered using displacement monitor
With foil gauge acquisition rock block strain in itself and deflection is converted into, the displacement of sample totality subtracts the change of rock block
Shape amount obtains the deflection in crack, so as to form strain-time graph of rock fracture at this temperature, and passes through fitting and obtains
Creep formula.
Creep test under the variation of temperature step.Calorstat temperature is first regulated, is then applying certain normal stress
After remain unchanged, increase after the regular hour or reduce certain temperature, remain unchanged again, so cycle, obtain temperature
Strain-time graph of the lower rock fracture of step variation, and pass through fitting and obtain creep formula.
Claims (7)
1. rock fracture creep test system under the influence of a kind of temperature, which is characterized in that including main machine frame, test cabinet, hydraulic pressure
Sealing system, seepage apparatus, displacement monitor, thermostat;The main machine frame includes pedestal, top plate and increased pressure board, institute
It states and test cabinet is fixedly mounted between pedestal and top plate, the cube rock fracture sample for test is placed in the test cabinet,
Increased pressure board is connected at the top of the sample, displacement sensor is installed on the increased pressure board, the sample is located in thermostat.
2. rock fracture creep test system under the influence of a kind of temperature as described in claim 1, it is characterised in that:The test cabinet
It is made of 4 blocks of side plates all around, the side plate is bolted between pedestal and top plate.
3. rock fracture creep test system under the influence of a kind of temperature as described in claim 1, it is characterised in that:The hydraulic pressure is close
Envelope system includes rubber sleeve, oil pocket, petroleum pipeline, oil pump;Rubber sleeve covers the inside of side plate, and pre- between side plate and rubber sleeve
Certain space is stayed as oil pocket, reserving hole connection petroleum pipeline on side plate, petroleum pipeline is connected with oil pump, by oil pump into oil pocket
Oiling makes rubber sleeve be close to sample so as to seal crack.
4. rock fracture creep test system under the influence of a kind of temperature as described in claim 1, it is characterised in that:The seepage flow dress
It puts including front side collecting chamber and rear side collecting chamber made of high-strength transparent material, hydraulic pressure sensor, flow sensor and water pipe;
Strip opening is left in the middle part of front side board and back side panel, front side collecting chamber is mounted on by bolt on front side board, and is wrapped out
Mouthful, rear side collecting chamber is mounted on by bolt on back side panel, and wraps opening;Water injection hole and hydraulic pressure are left on the collecting chamber of front side
Measured hole leaves apopore and water-pressure survey hole on rear side collecting chamber;Flow sensor connects water injection hole by water pipe;Hydraulic pressure passes
Sensor passes through the displacement monitor.
5. rock fracture creep test system under the influence of a kind of temperature as claimed in claim 4, it is characterised in that:The hydraulic pressure passes
Sensor includes displacement sensor, data collector connects water-pressure survey hole with water pipe.
6. rock fracture creep test system under the influence of a kind of temperature as described in claim 1, it is characterised in that:The constant temperature dress
It leaves opening on top set plate to be further applied load to top plate convenient for jack, opening is left for exporting petroleum pipeline from insulating box in side
And water pipe, opening are equipped with sealing ring to ensure the steady temperature in insulating box.
7. rock fracture creep test system under the influence of a kind of temperature as described in claim 1, it is characterised in that:The displacement prison
Surveying device includes displacement sensor, foil gauge, data collector and computer;Displacement sensor, which is mounted on, to be added on pedestal, is surveyed in real time
Measure the displacement of sample;Foil gauge is attached to the block both sides up and down of rock fracture sample, measures the strain of rock block in real time;Displacement
Sensor is connected with computer with automatic collection displacement data with foil gauge by data collector.
Priority Applications (1)
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CN201711248231.4A CN108051320A (en) | 2017-12-01 | 2017-12-01 | Rock fracture creep test system under the influence of a kind of temperature |
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CN201711248231.4A CN108051320A (en) | 2017-12-01 | 2017-12-01 | Rock fracture creep test system under the influence of a kind of temperature |
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CN108051320A true CN108051320A (en) | 2018-05-18 |
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CN201711248231.4A Pending CN108051320A (en) | 2017-12-01 | 2017-12-01 | Rock fracture creep test system under the influence of a kind of temperature |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108896468A (en) * | 2018-09-25 | 2018-11-27 | 河南工程学院 | A kind of rock sample seepage detector |
CN109297869A (en) * | 2018-11-14 | 2019-02-01 | 西南交通大学 | For the experimental rig of degradation mechanism containing fissure rock and method under water-rock interaction |
CN109520843A (en) * | 2019-01-17 | 2019-03-26 | 湖南科技大学 | A kind of device and application method measuring different depth rock crusher degree |
CN112050980A (en) * | 2020-08-21 | 2020-12-08 | 绍兴文理学院元培学院 | Torque measuring instrument based on strain gauge |
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CN102175529A (en) * | 2011-01-26 | 2011-09-07 | 徐州师范大学 | Creep permeation full-distance coupling test system for broken rock sample |
CN103076266A (en) * | 2012-11-27 | 2013-05-01 | 宁夏新三思检测设备有限公司 | Automatic concrete penetration detection apparatus |
CN103411750A (en) * | 2013-07-13 | 2013-11-27 | 西南石油大学 | High-temperature high-pressure full-diameter core crack leaking stoppage instrument |
CN104964880A (en) * | 2015-05-20 | 2015-10-07 | 中国矿业大学(北京) | Industrial computer tomograghy (CT)-based heating seepage true-triaxial test box |
CN105334240A (en) * | 2015-11-11 | 2016-02-17 | 中国科学院武汉岩土力学研究所 | Rock fracture frost heaving deformation testing device |
CN106153442A (en) * | 2016-08-09 | 2016-11-23 | 绍兴文理学院 | Sealing device for the test of rock fracture multi-scenarios method effect down cut |
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CN2600810Y (en) * | 2003-02-21 | 2004-01-21 | 中国科学院武汉岩土力学研究所 | True triaxil stress rock fissure seepage test deformation investigating device |
CN102175529A (en) * | 2011-01-26 | 2011-09-07 | 徐州师范大学 | Creep permeation full-distance coupling test system for broken rock sample |
CN103076266A (en) * | 2012-11-27 | 2013-05-01 | 宁夏新三思检测设备有限公司 | Automatic concrete penetration detection apparatus |
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CN104964880A (en) * | 2015-05-20 | 2015-10-07 | 中国矿业大学(北京) | Industrial computer tomograghy (CT)-based heating seepage true-triaxial test box |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108896468A (en) * | 2018-09-25 | 2018-11-27 | 河南工程学院 | A kind of rock sample seepage detector |
CN108896468B (en) * | 2018-09-25 | 2023-10-24 | 河南工程学院 | Rock sample seepage flow detection device |
CN109297869A (en) * | 2018-11-14 | 2019-02-01 | 西南交通大学 | For the experimental rig of degradation mechanism containing fissure rock and method under water-rock interaction |
CN109520843A (en) * | 2019-01-17 | 2019-03-26 | 湖南科技大学 | A kind of device and application method measuring different depth rock crusher degree |
CN109520843B (en) * | 2019-01-17 | 2024-03-08 | 湖南科技大学 | Device for measuring surrounding rock crushing degrees with different depths and use method |
CN112050980A (en) * | 2020-08-21 | 2020-12-08 | 绍兴文理学院元培学院 | Torque measuring instrument based on strain gauge |
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Application publication date: 20180518 |