CN107843502A - A kind of energetic disturbance creep of rock testing machine and test method based on multi- scenarios method - Google Patents
A kind of energetic disturbance creep of rock testing machine and test method based on multi- scenarios method Download PDFInfo
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- CN107843502A CN107843502A CN201711007194.8A CN201711007194A CN107843502A CN 107843502 A CN107843502 A CN 107843502A CN 201711007194 A CN201711007194 A CN 201711007194A CN 107843502 A CN107843502 A CN 107843502A
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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
- G01N3/14—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulum; generated by springs tension
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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
- G01N3/18—Performing tests at high or low temperatures
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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
- G01N2203/0071—Creep
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Abstract
The present invention provides a kind of energetic disturbance creep of rock testing machine and test method based on multi- scenarios method, testing machine includes main body steel construction and creep test device, main body steel construction includes support column, is welded in the support base of support column bottom and the girder with support column vertical articulation；Support column plan vertical is fixedly connected with a square connecting rod, and the other end of square connecting rod is flexibly connected a straight tube by bolt, and straight tube can rotate along horizontal line；Disturbance sleeve plate is arranged on straight tube；Girder can be in perpendicular along the vertical articulation with support column to be rotated；The one end of girder away from the support column is provided with multistage loadings pallet, counterweight is placed on multistage loadings pallet, for providing initial torque；Creep of rock testing machine also includes fixed bearing platform, and the movable cushion cap that can be stretched up and down along fixed bearing platform inwall is provided with fixed bearing platform；Movable cushion cap top junction corrosion groove, rock sample to be measured are positioned over center in etching tank；Constent temperature heater is additionally provided with etching tank.
Description
Technical field
The invention belongs to material mechanical performance testing field, and in particular to a kind of energetic disturbance rock based on multi- scenarios method
Creep testing machine and test method.
Background technology
In mechanics of materials field, creep is solid material under conditions of keeping stress constant, strain with time lengthening and
Increased phenomenon.Solid material in the case where bearing the yield stress less than material for a long time, it may occur that creep.By right
Material applies pressure, and over time, the creep stage be generally roughly divided into decay, stably, acceleration three
Stage.And the creep of rock under energetic disturbance effect refers to that the stress state of country rock is in rock strength limit stress, enclose
Rock can produce certain deformation of creep.At the same time, the rock for the energetic disturbance load for happening suddenly random during creep occurs
Stone creep.This random energetic disturbance effect can have a huge impact the deformation of creep of country rock.
And the environment residing for deep rock is complicated, it is merely not only the effect of suffered stress, and also suffers from high temperature
And the corrosion of underground water and the corrosiveness of ion.Present creep and stress rupture test machine, it is mainly used in metal, non-metallic material
The stretching of material, lasting, creep, relaxation test and low-cycle fatigue and creep fatigue experiment are compressed, be divided into machine by structure and principle
Two kinds of tool formula, electronic type.Temperature drift and demarcation value drift due to electronic tesing machine dynamometric system can not be eliminated thoroughly, institute
Can not often carry out long-time creep test, although and the creep testing machine of existing machinery formula using lever-type structure,
But apply dynamic load, dead load, high temperature and the mechanical creep testing machine of chemical attack effect to test specimen simultaneously and have no report.
The content of the invention
The problem of existing for prior art, the present invention provide a kind of energetic disturbance creep of rock examination based on multi- scenarios method
Machine and test method are tested, testing machine making is simple, operation facility, it is possible to achieve the classification of test specimen prolonged multi- scenarios method is added
Carry observation, using the testing machine of the present invention carry out experiment can more truly reduce under natural environment the creep process of rock and
By the deformation behaviour after energetic disturbance, and the accuracy of lever creep testing machine is improved to a certain extent.The skill of the present invention
Art scheme is：
One side, the present invention provide a kind of energetic disturbance creep of rock testing machine based on multi- scenarios method, including master
Body steel construction and creep test device, the main body steel construction include support column, are welded in the support bottom of the support column bottom
Seat and the girder with the support column vertical articulation；The support column plan vertical is fixedly connected with a square connecting rod, the side
The other end of shape connecting rod is flexibly connected a straight tube by bolt, and the straight tube can rotate along horizontal line；It is arranged on the straight tube
Disturb sleeve plate；The girder can be in perpendicular along the vertical articulation with the support column to be rotated；The girder is remote
One end of the support column is provided with multistage loadings pallet, counterweight is placed on the multistage loadings pallet, for providing initial torque；
The creep of rock testing machine also includes fixed bearing platform, and being provided with the fixed bearing platform can be along the fixed bearing platform
The movable cushion cap that inwall stretches up and down；The movable cushion cap top junction corrosion groove, rock sample to be measured are positioned over the corrosion
Center in groove；Constent temperature heater is additionally provided with the etching tank.
Further, the disturbance sleeve plate is square hollow-core construction, and the disturbance sleeve plate is adjusted in institute by bolt
State and be arranged height on straight tube.
Further, it is respectively arranged with what is be mutually twisted on the outer wall of the inwall of the fixed bearing platform and the movable cushion cap
Stepped thread, the stepped thread being mutually twisted are used to adjust the movable cushion cap in the fixed bearing platform
Flexible height up and down.
Further, the support base bottom is provided with hold-down support, and sidepiece is provided with to be resisted for increasing the support base
The ribbed stiffener of curved effect.
Further, the girder is made of steel Q235C.
Further, the etching tank is made using 304 white steel, to prevent the corrosiveness of the corrosion of water and ion.
Further, the creep of rock testing machine also includes strain acquirement device, and the strain acquirement device is passed by data
Defeated line is connected with the rock sample to be measured, for gathering rock sample horizontal direction and vertical direction deformation.
Second aspect, the present invention provide a kind of energetic disturbance creep of rock method based on multi- scenarios method, are using upper
Creep of rock testing machine is stated, is comprised the following steps：
(1) height of regulation activity cushion cap and rock sample to be measured is positioned in etching tank, rock sample to be measured it is upper
Surface contacts with girder lower surface, rock sample to be measured is connected by data line with strain acquirement device, in etching tank
Add etchant solution and pass through the temperature in constent temperature heater control corrosion rate groove；
(2) required according to the constant stress of test, by the counterweight multistage loadings of corresponding weight on multistage loadings pallet, utilized
Lever principle transmits torque and rock sample pressed until reaching constant stress requirement, and rock sample is in constant stress, stationary temperature, corrosion
Hierarchical loading creep occurs in the presence of solution；
(3) the disturbance sleeve plate of different weight is at the same time arranged on straight tube as impact counterweight, is disturbed by loosening
Sleeve plate makes it carry out freely falling body impact under certain altitude, carries out the disturbance test under the conditions of different constant stress；
(4) the horizontally and vertically strain data of rock sample is gathered, and draws out the different dynamic disturbance of different constant stress
The Creep Rule curve map of the lower rock sample of power effect.
The creep of rock testing machine of the present invention functionally, can not only test creep of the rock under energetic disturbance effect
The feature of deformation, creep of rock constitutive model is established, the creep impairment and creep that analysis rock occurs in creep process are hard
Change feature.And creep evolutionary process of the deep rock under high temperature, chemical solution corrosiveness can be preferably simulated, analysis is compacted
Become mechanical characteristic rule.And multistage loadings can be carried out by right side pallet and form prolonged hierarchical loading creep test.
Constructively, confined area activity cushion cap is added on the basis of traditional lever creep testing machine, can be held by lifting activity
Platform height, confined area height is controlled to adapt to the test specimen of different height.And the etching tank design on movable cushion cap can make examination
Part enters trip temperature, burn into stress THM coupling creep test simultaneously.And when being tested, when creep occurs for test specimen, its
Fixture uses the lower surface of lever girder, and loading in rotary moving is close to the deformation of creep of test specimen, and solving fixture can not
The problem of being adjusted according to the creep compliance of material, the unbalance possibility of lever is reduced, passes through sufficiently long girder lever following table
Plane so that when further being tested, its data accuracy tested improves.I.e. compared with prior art, spy of the invention
Point and beneficial effect are：
(1) in the present invention, be used to controlling in creep process test specimen to be measured fixture use the lower surface of lever girder with
And the inner bottom surface of etching tank, with the deformation of creep of test specimen, the movement loading of test specimen upper surface is close in the lower surface of girder, solves
The problem of fixture can not be adjusted according to the creep compliance of material, reduce the unbalance possibility of lever.
(2) testing machine of the invention passes through sufficiently long girder lever following table plane so that when further being tested, its
The data accuracy of test improves, and can ensure the creep observation to test specimen for a long time.
(3) creep of the rock under natural environment can more truly be reduced by carrying out experiment using the testing machine of the present invention
Journey and by the deformation behaviour after energetic disturbance, can carry out the creep test of multi- scenarios method, and observe the chemical reaction of test specimen
Phenomenon and collection strain data.
(4) present invention, can be by being arranged the disturbance sleeve plate of different quality and adjusting it straight in terms of energetic disturbance
The size that height carrys out double regulation impulsive forces is arranged on pipe.
Brief description of the drawings
Fig. 1 is the front view of the energetic disturbance creep of rock testing machine structure based on multi- scenarios method of the embodiment of the present invention；
Fig. 2 is Fig. 1 top view；
Fig. 3 is Fig. 1 side view；
Fig. 4 is the structural representation of the movable cushion cap of the embodiment of the present invention；
Fig. 5 is the structural representation of the disturbance sleeve plate of the embodiment of the present invention.
Wherein：1st, support base, 2, hold-down support, 3, base ribbed stiffener, 4, support column, 5, connection support column and girder
Live bearing, 6, girder, 7, square connecting rod, the movable bolt between 8, square connecting rod and straight tube, 9, straight tube, 10, disturbance
Sleeve plate, 11, multistage loadings pallet, 12, fixed bearing platform, 13, movable cushion cap clip, 14, movable cushion cap, 15, circular pressure-bearing
Plate, 16, etching tank, 17, constent temperature heater, 18, the stepped thread on movable cushion cap.
Embodiment
The present invention is described in further details with specific embodiment below in conjunction with the accompanying drawings, described is the solution to the present invention
Release rather than limit.
Fig. 1~3 show a kind of energetic disturbance creep of rock testing machine based on multi- scenarios method of the specific embodiment of the invention
Structural representation, including main body steel construction and creep test device, main body steel construction include support column 4, be welded in support column 4
The support base 1 of bottom and the girder 6 with the vertical articulation of support column 4, girder are made of steel Q235C.Hang down at the top of support column 4
Straight to be fixedly connected with a square connecting rod 7, the other end of square connecting rod 7 is flexibly connected a straight tube 9 by bolt 8, and the straight tube 9 can
Rotated along horizontal line, it is therefore an objective to which the convenient disturbance sleeve plate 10 being arranged thereon takes out, and disturbance sleeve plate 10 is square hollow-core construction
(as shown in Figure 5), disturbance sleeve plate 10 are adjusted by bolt and are arranged height on the straight tube 9, can be at any time by being arranged
Height or the quality of sleeve plate carry out dual regulation impulsive force size.And impact is more smart in order that disturbance sleeve plate glides
Standard, height dimension data are carved with above straight tube, disturbance shock height is adjusted by the bolt for disturbing sleeve plate both sides at any time, passed through
The disturbance sleeve plate for being arranged different quality changes the quality of disturbance sleeve plate, then loose bolts, under making disturbance sleeve plate smooth
Cunning forms different disturbance impulsive forces, for needed for experiment.
Support base 1 bottom 4 is welded with hold-down support 2 on angle, and hold-down support is stable on ground by bolt；Support
The sidepiece of base 1 is provided with the ribbed stiffener 3 for being used for increasing the unbending of support base 1, and ribbed stiffener 3 is located at base long side both sides, respectively had
One.
Girder 6 can be in perpendicular along the vertical articulation with support column 4 to be rotated；And girder 6 is away from support column 4
One end is provided with multistage loadings pallet 11, counterweight is placed on multistage loadings pallet 11, for providing initial torque.In order that girder
Both ends form certain load conversion proportioning, the rearward end for being closely located to girder that fixed bearing platform is set, in the present embodiment
In scheme, the left and right ends for realizing girder using the classification counterweight of multistage loadings pallet keep balance, and so, its left and right ends is
It can be achieved different load proportionings, such as when multistage loadings pallet loading 100kg is when dispelling yard, the rear end of its girder can be realized
6893N load, when multistage loadings pallet is not loaded with dispelling yard, it is from the test section constant stress reformed by girder
392.7N, the scheme of the present embodiment have larger load conversion proportioning, in the presence of torque transmitting, realize one side very little
Weight can transmit very big stress to test section, the accounting of its test data is more convenient.
The creep of rock testing machine of the present embodiment also includes fixed bearing platform 12, and being provided with fixed bearing platform 12 can hold along fixation
The movable cushion cap 14 that platform inwall stretches up and down, the structure of movable cushion cap 14 is as shown in figure 4, the inwall of fixed bearing platform 12 and activity are held
The stepped thread 18 being mutually twisted is respectively arranged with the outer wall of platform 14, the stepped thread being mutually twisted is used to adjust
Upper and lower flexible height of the section activity cushion cap in fixed bearing platform, and be that its height is raised by rotate counterclockwise activity cushion cap
Degree, reduces its height, stepped screw thread toothing can improve bearing capacity, movable cushion cap by turning clockwise activity cushion cap
On be additionally provided with clip 13, play a part of stuck movable cushion cap.Movable 14 upper weld of cushion cap, one piece of circular bearing plate 15, circle
Etching tank 16 is set on shape bearing plate 15, and rock sample to be measured is positioned over center in etching tank 16；Also set in etching tank 16
There is constent temperature heater 17, play a part of to control etchant solution temperature.Etching tank is made using 304 white steel, can prevent the molten of water
Erosion and the corrosiveness of ion.The creep of rock testing machine of the present embodiment passes through regulation activity cushion cap when without experiment
Highly make circular bearing plate support girder, and movable cushion cap is fixed by clip；When being tested, clip, up time are unclamped
Pin rotary moveable cushion cap declines its height, lays etching tank, test specimen is vertically placed on into etching tank inside upper surface and pressure connects
Between contacting surface, then rotate counterclockwise activity cushion cap rises its height, adjusts to by test specimen upper surface and is contacted with girder lower surface
.
The creep of rock testing machine of the present embodiment also includes strain acquirement device, and strain acquirement device is by data line with treating
Rock sample connection is surveyed, is horizontally and vertically strained for gathering rock sample.
The specific embodiment of the invention also provides a kind of energetic disturbance creep of rock method based on multi- scenarios method, is using upper
Creep of rock testing machine is stated, is comprised the following steps：
(1) clip on first loosening activity cushion cap, then turn clockwise activity cushion cap, makes its height to be measured to being adapted to
The placing height of rock sample, rock sample to be measured is positioned in etching tank, then adjust movable cushion cap make test specimen upper surface with
Girder lower surface is contacted, and rock sample to be measured is connected by data line with strain acquirement device, is added in etching tank
Etchant solution simultaneously passes through the temperature in constent temperature heater control corrosion rate groove, the experiment of achievable 1~120 DEG C creep of rock；
(2) required according to the constant stress of test, by the counterweight multistage loadings of corresponding weight on multistage loadings pallet, utilized
Lever principle transmits torque and rock sample pressed until reaching constant stress requirement, and rock sample is in constant stress, stationary temperature, corrosion
Hierarchical loading creep occurs in the presence of solution；
(3) the disturbance sleeve plate of different weight is at the same time arranged on straight tube as impact counterweight, is disturbed by loosening
Sleeve plate makes it carry out freely falling body impact under certain altitude, carries out the disturbance under the conditions of different constant stress；By not
It is disconnected to change counterweight weight on the right side of girder and realize hierarchical loading by constantly changing weight and the shock height of disturbance sleeve plate
Energetic disturbance effect；
(4) the horizontally and vertically strain data of rock sample is gathered by strain acquirement device, and draws out different constant stress
The lower rock sample of different dynamic perturbed force effect Creep Rule curve map.
The creep testing machine of the present embodiment has the creep testing experiment that can be carried out to rock under multi- scenarios method effect, and
And strain variation situation can be observed by strain acquirement device and carry out hierarchical loading research, and can ensure for a long time to test specimen
Creep is tested, especially suitable for continual test specimen creep testing requirement for a long time.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (8)
1. a kind of energetic disturbance creep of rock testing machine based on multi- scenarios method, it is characterised in that including main body steel construction and compacted
Become test device, the main body steel construction includes support column, be welded in the support base for supporting column bottom and with the branch
The girder of dagger vertical articulation；The support column plan vertical is fixedly connected with a square connecting rod, the square connecting rod it is another
One end is flexibly connected a straight tube by bolt, and the straight tube can rotate along horizontal line；Disturbance sleeve plate is arranged on the straight tube；Institute
State girder and can be in along the vertical articulation with the support column in perpendicular and rotated；The girder away from the support column one
End is provided with multistage loadings pallet, counterweight is placed on the multistage loadings pallet, for providing initial torque；
The creep of rock testing machine also includes fixed bearing platform, and being provided with the fixed bearing platform can be along the fixed bearing platform inwall
Flexible movable cushion cap up and down；The movable cushion cap top junction corrosion groove, rock sample to be measured are positioned in the etching tank
Center；Constent temperature heater is additionally provided with the etching tank.
A kind of 2. energetic disturbance creep of rock testing machine based on multi- scenarios method according to claim 1, it is characterised in that
The disturbance sleeve plate is square hollow-core construction, and the disturbance sleeve plate is adjusted by bolt is arranged height on the straight tube
Degree.
A kind of 3. energetic disturbance creep of rock testing machine based on multi- scenarios method according to claim 2, it is characterised in that
The stepped thread being mutually twisted is respectively arranged with the outer wall of the inwall of the fixed bearing platform and the movable cushion cap, it is described
The stepped thread being mutually twisted is used to adjust upper and lower flexible height of the movable cushion cap in the fixed bearing platform.
A kind of 4. energetic disturbance creep of rock testing machine based on multi- scenarios method according to claim 1, it is characterised in that
The support base bottom is provided with hold-down support, and sidepiece is provided with the ribbed stiffener for being used for increasing the support base unbending.
A kind of 5. energetic disturbance creep of rock testing machine based on multi- scenarios method according to claim 1, it is characterised in that
The girder is made of steel Q235C.
A kind of 6. energetic disturbance creep of rock testing machine based on multi- scenarios method according to claim 1, it is characterised in that
The etching tank is made using 304 white steel, to prevent the corrosiveness of the corrosion of water and ion.
7. a kind of energetic disturbance rock based on multi- scenarios method according to claim 1~6 any one claim is compacted
Become testing machine, it is characterised in that the creep of rock testing machine also includes strain acquirement device, and the strain acquirement device passes through data
Transmission line is connected with the rock sample to be measured, for gathering rock sample horizontal direction and vertical direction deformation.
8. a kind of energetic disturbance creep of rock method based on multi- scenarios method, it is using the creep of rock examination described in claim 1
Test machine, it is characterised in that comprise the following steps：
(1) height of regulation activity cushion cap and rock sample to be measured is positioned in etching tank, the upper surface of rock sample to be measured
Contacted with girder lower surface, rock sample to be measured is connected by data line with strain acquirement device, added in etching tank
Etchant solution simultaneously passes through the temperature in constent temperature heater control corrosion rate groove；
(2) required according to the constant stress of test, by the counterweight multistage loadings of corresponding weight on multistage loadings pallet, utilize lever
Principle transmits torque and rock sample pressed until reaching constant stress requirement, and rock sample is in constant stress, stationary temperature, etchant solution
In the presence of occur hierarchical loading creep；
(3) the disturbance sleeve plate of different weight is at the same time arranged on straight tube as impact counterweight, sleeve is disturbed by loosening
Plate makes it carry out freely falling body impact under certain altitude, carries out the disturbance test under the conditions of different constant stress；
(4) the horizontally and vertically strain data of rock sample is gathered, and draws out the different dynamic disturbance masterpiece of different constant stress
With the Creep Rule curve map of lower rock sample.
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| CN201711007194.8A CN107843502B (en) | 2017-10-25 | 2017-10-25 | Dynamic disturbance rock creep test method based on multi-field coupling |
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| CN201711007194.8A CN107843502B (en) | 2017-10-25 | 2017-10-25 | Dynamic disturbance rock creep test method based on multi-field coupling |
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| CN108333057A (en) * | 2018-05-03 | 2018-07-27 | 山东科技大学 | A kind of lever coal petrography long time creep test device |
| CN108398255A (en) * | 2018-04-04 | 2018-08-14 | 镇江市建科工程质量检测中心有限公司 | A kind of reaction frame and the method using reaction frame progress slow test |
| CN109187199A (en) * | 2018-09-18 | 2019-01-11 | 中国石油大学(华东) | The viscoelasticity theory analysis method of anchored rock mass creep properties under uniaxial compression |
| CN111896399A (en) * | 2020-08-05 | 2020-11-06 | 辽宁工业大学 | Creep-impact coupling test system and method for research CFRP (carbon fiber reinforced plastics) constrained heat damage coal sample |
| EP3901608A1 (en) * | 2020-04-21 | 2021-10-27 | The Boeing Company | Compressive creep flow determination in fluids |
| CN114608935A (en) * | 2022-03-28 | 2022-06-10 | 武汉大学 | Rock multi-field coupling loading test system and method |
| CN118533674A (en) * | 2024-07-22 | 2024-08-23 | 深圳大学 | In-situ rock seawater corrosion and power disturbance coupling loading testing device and method |
| CN118533674B (en) * | 2024-07-22 | 2024-09-24 | 深圳大学 | In-situ rock seawater corrosion and power disturbance coupling loading testing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111896399A (en) * | 2020-08-05 | 2020-11-06 | 辽宁工业大学 | Creep-impact coupling test system and method for research CFRP (carbon fiber reinforced plastics) constrained heat damage coal sample |
| CN111896399B (en) * | 2020-08-05 | 2023-08-18 | 辽宁工业大学 | Research CFRP (carbon fiber reinforced plastic) constrained heat damage coal sample creep-impact coupling test system and method |
| CN114608935A (en) * | 2022-03-28 | 2022-06-10 | 武汉大学 | Rock multi-field coupling loading test system and method |
| CN118533674A (en) * | 2024-07-22 | 2024-08-23 | 深圳大学 | In-situ rock seawater corrosion and power disturbance coupling loading testing device and method |
| CN118533674B (en) * | 2024-07-22 | 2024-09-24 | 深圳大学 | In-situ rock seawater corrosion and power disturbance coupling loading testing device and method |
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