CN106353202A - Tension, pressure and ring-shear tester for rock - Google Patents
Tension, pressure and ring-shear tester for rock Download PDFInfo
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- CN106353202A CN106353202A CN201610859648.3A CN201610859648A CN106353202A CN 106353202 A CN106353202 A CN 106353202A CN 201610859648 A CN201610859648 A CN 201610859648A CN 106353202 A CN106353202 A CN 106353202A
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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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
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the technical field of mechanical testing devices for rock and discloses a tension, pressure and ring-shear tester for the rock. The tester comprises a base, a lower shear box, an upper shear box, a first framework, a second framework, an axial loading system and a torque loading system; the first framework is fixed on the base, and the second framework is fixed on the first framework; the axial loading system is fixed on the second framework, and the upper shear box is fixed at an output terminal of the axial loading system; the torque loading system is fixed on the second framework; the lower shear box is fixed on the base; the upper shear box and the lower shear box are arranged oppositely; an annular upper sample groove is formed in the upper shear box, and an annular lower sample groove matched with the annular upper sample groove is formed in the lower shear box; the torque loading system is connected with the output terminal of the axial loading system and is used for applying horizontal torque. The tester provided by the invention can be used for really simulating a stress state of the rock.
Description
Technical field
The present invention relates to rock mechanics experiment engineering device technique field, particularly to a kind of rock tension and compression ring shear test instrument.
Background technology
The Shear Strength of rock is the ability that rock resists failure by shear, is need in ROCK MECHANICS RESEARCH important
One of characteristic.In Geotechnical Engineering field, the Shear Strength Index of widely used determination of test method rock.Measure shear of rock to break
The test method of intensity, can be divided into laboratory test and field test two big class.Wherein, laboratory test generally includes direct shearing examination
Test, wedge shape shearing is tested and triaxial compression test.Field test is usually direct shear test.
Analyze existing test method, its test load mode, selection of sample structure form are so that in shear history
In, the shearing stress distribution on shear surface is uneven, and shear surface is progressive destruction and is not put down same with shear stress outbound course
Face, stress when truly can not reflect that rock is cut, the real bearing state for reflection rock and study of rocks
The parameters such as Shear Strength have stronger limitation.
Content of the invention
The present invention provides a kind of rock tension and compression ring shear test instrument, solves to shear in rock sample shear history in prior art
On face, distribution of shear stress is uneven, destroys discontinuous, coplanar cannot truly not reflect stress to shear stress outbound course
Technical problem.
For solving above-mentioned technical problem, the invention provides a kind of rock tension and compression ring shear test instrument, comprising: pedestal, under cut
Cut box, upper shear box, the first framework, the second framework, axial loading system and torque loading system；
Described first framework is fixed on described pedestal, and described second framework is fixed on described first framework；
Described axial loading system is fixed on described second framework, and described upper shear box is fixed on described axially loaded system
System outfan；
Described torque loading system is fixed on described second framework；
Described down cut box is fixed on described pedestal；
Wherein, described upper shear box and described down cut box are oppositely arranged；Sample in annular is opened up on described upper shear box
Groove, described down cut box opens up sample groove under matching annular；
Described torque loading system is connected with the outfan of described axial loading system, for applying horizontal torque.
Further, described axial loading system includes: axial force distribution assembly and axial piston bar；
Described axial force distribution assembly is fixed on described second framework；
Described axial piston bar is connected with described axial force distribution assembly, for transmitting axial tension and pressure；
Described piston rod top is fixedly linked with described upper shear box.
Further, described torque loading system includes: level force assembly, horizontal push-and-pull connecting rod and toothed disc；
Described toothed disc center opens up ring set fixed structure, is socketed on described axial piston bar；
Described level force assembly is connected with described toothed disc by waling stripe, drives described toothed disc with described axial direction
Piston rod is axis of rotation, and pulls described axial piston bar to rotate；
Wherein, the tooth that on described horizontal push-and-pull connecting rod, setting is engaged with described toothed disc coupling.
Further, described torque loading system also includes: horizontally-guided slide rail and matching slide block；
Described horizontal push-pull bar and described slide block are fixedly linked, and can follow slide block and move along described horizontally-guided slide rail level
Dynamic.
Further, described ring set fixed structure includes: position limiting structure and ball row；
Described position limiting structure is fixed between described toothed disc and described axial piston bar, for limiting both horizontal directions
On relative displacement；
Described ball row is arranged between described toothed disc and described axial piston bar, is used for realizing toothed disc and described axle
To piston rod relative slip in the axial direction.
Further, it is arranged to regular polygon outer edge surface in the middle part of described axial piston bar, described position limiting structure is using therewith
The regular polygon spacing hole of coupling；
Described ball row is embedded between described regular polygon spacing hole and described regular polygon outer edge surface.
Further, described torque loading system also includes: toothed disc position limiting structure；
Described go out wheel disc position limiting structure be arranged between described first framework and described second framework, be clipped in described face of gear
Both sides, limit its axial displacement.
Further, on described in shear box and described down cut box, with the face of sample contacts on open up boss.
Further, described axial force distribution assembly adopts axial hydraulic jack and the first hydraulic servo pump, described water
Flat force assembly adopts horizontal hydraulic pressure jack and the second hydraulic servo pump.
Further, described first framework and described second framework are respectively provided with the cunning mated with described axial piston bar
Set, is socketed in the upper and lower of described axial piston bar respectively, limits its amplitude of oscillation.
The one or more technical schemes providing in the embodiment of the present application, at least have the following technical effect that or advantage:
In the embodiment of the present application provide rock tension and compression ring shear test instrument, by axial loading system apply axial tension and
Pressure, forms the ambient stress needing；And pass through torque loading system further to circular cylindrical rock sample applying moment of torsion, real
Existing ring is cut, thus realizing uniformly applying shear stress, promotes detrusion continuous uniform；Meanwhile, by upper shear box and down cut
Box discrete matched, keeps gap, thus ensureing that shearing force concentrates at interface so that shear stress isoplanar, truly completely
The reflection rock stress that is subject to when cutting, the real bearing state for reflection rock and the Shear Strength of study of rocks etc.
Parameter has clearly, reliable integrity.On the other hand, independently or mixedly to rock sample axial tension, pressure and torsion can be loaded
Square, and overcome the defect interfering when axial force is loaded with moment of torsion, it is possible to achieve shearing stress distribution suffered by shear history
Uniformity and the seriality of detrusion, obtain more accurate shear of rock shearing stress parameter, detrusion change, improve
With the constitutive relation improving rock.
Brief description
Fig. 1 is the structural representation of rock tension and compression ring shear test instrument provided in an embodiment of the present invention；
Fig. 2 is torque loading system structural representation provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present application is passed through to provide a kind of rock tension and compression ring shear test instrument, solves rock sample shearing in prior art
During distribution of shear stress is uneven on shear surface, destroy discontinuous, the technical problem of shear stress outbound course not coplanar；Reach
Arrive lifting shear of rock shearing stress parameter, detrusion change precision, integrity, improve the technology effect of Basic Structural Relations of Rocks
Really.
For solving above-mentioned technical problem, the embodiment of the present application provides the general thought of technical scheme as follows:
Uniformly applied it is ensured that deformation continuous uniform by the moment of torsion that torque loading system realizes central column rock sample；And
By the independent operation of axial loading system and torque loading system, and combine upper and lower shear box cooperation, keep at shear stress
In interface, keep in the same plane；Thus the truly complete stress of simulation rock sample, lifting test parameter
Precision, integrity and reliability.
In order to be better understood from technique scheme, below in conjunction with Figure of description and specific embodiment to upper
State technical scheme to be described in detail it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than the restriction to technical scheme, in the case of not conflicting, the embodiment of the present application
And the technical characteristic in embodiment can be mutually combined.
The present invention according to hollow cylinder loading characteristic, using for hollow cylinder sample applying moment of torsion by the way of so as to
Destroy in predetermined hoop section.In shear history, more uniform, shear surface the deformation of shearing stress distribution along shear surface connects
Continuous and smooth, it is possible to obtain more accurate Shear Strength.The shearing strength that simultaneously can be left behind with study of rocks, and
The mechanical characteristic in research structure face.
Referring to Fig. 1, specifically, a kind of rock tension and compression ring shear test instrument provided in an embodiment of the present invention, comprising: pedestal 1,
Down cut box 10, upper shear box 11, the first framework 2-1, the second framework 2-2, axial loading system and torque loading system.
Described first framework 2-1 is fixed on described pedestal 1, and described second framework 2-2 is fixed on described first framework 2-1
On；Constitution equipment support, specifically, constitutes the force-applying bracket of axial loading system and torque loading system.
Described axial loading system is fixed on described second framework 2-2, and described upper shear box 11 is fixed on described axial direction
Loading system outfan；That is, the present embodiment is by the concrete direct execution as execution tension and compression and shearing manipulation of upper shear box 11
Part.
Described torque loading system is fixed on described second framework 2-2；
Described down cut box 2-1 is fixed on described pedestal 1；
Wherein, described upper shear box 11 and described down cut box 10 are oppositely arranged；Annular is opened up on described upper shear box 11
Upper sample groove, described down cut box opens up sample groove under matching annular.
Described torque loading system is connected with the outfan of described axial loading system, in conjunction with coupled upper shear box
11, realize the outfan of axial loading system, execution shearing manipulation and La Ya operation, answer with drawing for applying horizontal torque simultaneously
Power and compressive stress.
First framework 2-1 is connected with pedestal 1 by bolt, has circular hole in the middle part of it, for the action of axial loading system；
Second framework 2-2 is connected with the first framework 2-1 by bolt, in the middle part of it and horizontal level has circular hole, is respectively used to installation axle
To loading system and horizontal addload system.
Described axial loading system includes: axial force distribution assembly and axial piston bar 5；Described axial force distribution assembly is fixed
On described second framework 2-2；Described axial piston bar 5 is connected with described axial force distribution assembly, for transmit axial tension and
Pressure；Described piston rod 5 top is fixedly linked with described upper shear box 11；Form direct force application structure.
Referring to Fig. 2, described torque loading system includes: level force assembly 3, horizontal push-and-pull connecting rod 7 and toothed disc 9；
Described toothed disc 9 center opens up ring set fixed structure, is socketed on described axial piston bar 5；Described level force assembly leads to
Cross waling stripe 7 to be connected with described toothed disc 9, drive described toothed disc 9 with described axial piston bar 5 as axis of rotation, and draw
Move described axial piston bar 5 to rotate.
Wherein, the tooth that on described horizontal push-and-pull connecting rod 7, setting is engaged with described toothed disc 9 coupling.
Further, described torque loading system also includes: horizontally-guided slide rail 8 and matching slide block；Described
Horizontal push-pull bar 7 and described slide block are fixedly linked, and can follow slide block and move horizontally along described horizontally-guided slide rail 8.Thus it is strict
Control the precision of horizontal torque output.
Described ring set fixed structure includes: position limiting structure and ball row.
Described position limiting structure is fixed between described toothed disc 9 and described axial piston bar 5, for limiting both level sides
Relative displacement upwards.
Described ball row is arranged between described toothed disc 9 and described axial piston bar 5, is used for realizing toothed disc 9 and institute
State axial piston bar 5 relative slip in the axial direction.
Thus forming axial force distribution structure and horizontal torque structure.
Further, it is arranged to regular polygon outer edge surface 5-2 in the middle part of described axial piston bar 5, described position limiting structure adopts
Matching regular polygon spacing hole；Described ball row is embedded in described regular polygon spacing hole and described regular polygon outer edge surface
Between 5-2.Form strictly reliable rotating torque transmission.
Specifically, described axial piston bar 5 may be configured as variable cross-section shape, comprising: Part I piston rod 5-1, the
Two partial piston bar 5-2, Part III piston rod 5-3.
Wherein, Part I piston rod 5-1 is connected with the second framework 2-2 by ring flange 6, and counter-force is passed to the second frame
Frame 2-2.And then pass to the first framework 2-1, until pedestal 1；Thus forming stable force application structure.
Part II piston rod 5-2 cross sectional shape is square, regular polygon etc.；By ball, row is connected with toothed disc 9, can
The moment of torsion producing for Transmission gear disk 9 rotation, can also move up and down simultaneously, transmit xial feed.
Part III piston rod 5-3 is integrated with force transmitting board, is connected with upper shear box 11 by bolt, and front two parts are passed
The load passed, is applied to rock sample, reaches test objective.
Further, described torque loading system also includes: toothed disc position limiting structure 4；Described go out wheel disc position limiting structure 4 set
Put between described first framework 2-1 and described second framework 2-2, be clipped in described face of gear 9 both sides, limit its axial displacement,
Enable stable rotation.
Further, on described in shear box and described down cut box, with the face of sample contacts on open up boss.?
By seccotine fixing when, increase contact area with sample it is ensured that the fixing reliability of sample.
Described axial force distribution assembly adopts axial hydraulic jack and the first hydraulic servo pump, described level force assembly
Using horizontal hydraulic pressure jack and the second hydraulic servo pump.
Further, described first framework and described second framework are respectively provided with the cunning mated with described axial piston bar
Set, is socketed in the upper and lower of described axial piston bar respectively, limits its amplitude of oscillation.
Rock of the present invention draws/and pressure ring scissor test instrument independently or mixedly to rock sample can load axial tension, pressure and torsion
Square, and overcome the defect interfering when axial force is loaded with moment of torsion, it is possible to achieve shearing stress distribution suffered by shear history
Uniformity and the seriality of detrusion, obtain more accurate shear of rock shearing stress parameter, detrusion change, improve
With the constitutive relation improving rock.May be simultaneously used for the mechanical characteristic in research structure face, for the solution tool of engineering problem
Significant.
The operation principle of the present invention is:
Prepare hollow cylinder rock sample, and the middle part clearance position in rock sample outer wall pastes foil gauge, with strain acquisition system
Connect.Upper shear box 11, the bottom of down cut box 10 and plateau sidewall smear seccotine, by rock sample and upper shear box 11 and under cut
Cut box 10 to bond together.And ensure down cut box 10, rock sample, upper shear box 11 on same centrage, rock sample and under cut
Cut box 10, upper shear box 11 is connected as an entirety.
Down cut box 10 is positioned over and is bolted between pedestal 1, and ensures down cut box 10 and pedestal 1 end horizontal
Connect.Upper shear box 11 is connected with axial piston bar 5 by bolt, and ensures upper shear box 11 and axial piston bar 5 end water
Flushconnection.
Axial piston bar 5 is connected with the second framework 2-2 by ring flange 6, Part I axial piston bar 5-1, second
Split axle, to piston rod 5-2 and Part III axial piston bar 5-3, is each passed through the second framework 2-2, toothed disc 9, the first framework
2-1, is connected with upper shear box 11.The lower surface of axial piston bar 5 and pedestal 1, down cut box 10, the upper following table of upper shear box 10
Face horizontal parallel.
Line slideway 8 is fixed with the second framework 2-2 by bolt, and horizontal push-and-pull connecting rod 7 is sliding on horizontally-guided slide rail 8
OK；Level force assembly 3 is fixed with the second framework 2-2 by bolt, and passes through the form of sliding sleeve 13 with the second framework 2-2, real
The movement of existing piston rod；Toothed disc 9 passes through gear position limiting device 4 and the first framework 2-1, the second framework 2-2 in the axial direction
Fix it is ensured that toothed disc 9 can only rotate it is impossible to move up and down in process of the test.In the horizontal direction, level force
Assembly 3 promotes horizontal push-and-pull connecting rod 7 to move forward and backward along horizontally-guided slide rail 8, controls the rotation of toothed disc 9.
Have square opening in the middle of toothed disc 9, be connected with axial piston bar 5 by rolling arranging device, the setting of rolling row's form can
To realize moving up and down of axial piston bar 5, the moment of torsion that simultaneously toothed disc 9 can be rotated generation passes to axial piston bar 5,
And then pass to rock sample.To realize the independence of axial force and moment of torsion or the loading of mixing.
When loading axial compressive force, by hydraulic servo pump to axial piston upper space oil transportation, promote axial piston rod
Move down, apply axial compressive force.Continue to load axial compressive force to setting value, off-test when need to unload axial compressive force, logical
Cross hydraulic servo pump to axial piston lower space oil transportation, lift piston.
When loading axial tension, by hydraulic servo pump to axial piston lower space oil transportation, promote axial piston rod
Move up, apply axial tension.Continue to load axial tension to setting value, off-test when need to unload axial tension, logical
Cross hydraulic servo pump to upper space oil transportation under axial piston, lift piston.
When loading moment of torsion, by hydraulic servo pump to jack oil transportation to setting value, during off-test, unload jack
Oil pressure.
Off-test simultaneously when need to take out rock sample, will connect the Bolt dismantling of upper shear box 11 and axial piston bar 5, in taking-up
Shear box 11.Say the disassembling bolts connecting down cut box 10 and pedestal 1, take out down cut box 10.Using high-temperature heating or molten
The mode of solution colloid, rock sample is separated with upper shear box 11, upper shear box 10.
The one or more technical schemes providing in the embodiment of the present application, at least have the following technical effect that or advantage:
In the embodiment of the present application provide rock tension and compression ring shear test instrument, by axial loading system apply axial tension and
Pressure, forms the ambient stress needing；And pass through torque loading system further to circular cylindrical rock sample applying moment of torsion, real
Existing ring is cut, thus realizing uniformly applying shear stress, promotes detrusion continuous uniform；Meanwhile, by upper shear box and down cut
Box discrete matched, keeps gap, thus ensureing that shearing force concentrates at interface so that shear stress isoplanar, truly completely
The reflection rock stress that is subject to when cutting, the real bearing state for reflection rock and the Shear Strength of study of rocks etc.
Parameter has clearly, reliable integrity.On the other hand, independently or mixedly to rock sample axial tension, pressure and torsion can be loaded
Square, and overcome the defect interfering when axial force is loaded with moment of torsion, it is possible to achieve shearing stress distribution suffered by shear history
Uniformity and the seriality of detrusion, obtain more accurate shear of rock shearing stress parameter, detrusion change, improve
With the constitutive relation improving rock.
It should be noted last that, above specific embodiment only in order to technical scheme to be described and unrestricted,
Although being described in detail to the present invention with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent, without deviating from the spirit and scope of technical solution of the present invention, it all should be covered
In the middle of scope of the presently claimed invention.
Claims (10)
1. a kind of rock tension and compression ring shear test instrument it is characterised in that include: pedestal, down cut box, upper shear box, the first framework,
Second framework, axial loading system and torque loading system；
Described first framework is fixed on described pedestal, and described second framework is fixed on described first framework；
Described axial loading system is fixed on described second framework, and it is defeated that described upper shear box is fixed on described axial loading system
Go out end；
Described torque loading system is fixed on described second framework；
Described down cut box is fixed on described pedestal；
Wherein, described upper shear box and described down cut box are oppositely arranged；Sample groove in annular, institute are opened up on described upper shear box
State and sample groove under matching annular is opened up on down cut box；
Described torque loading system is connected with the outfan of described axial loading system, for applying horizontal torque.
2. right wants the rock tension and compression ring shear test instrument as described in 1 it is characterised in that described axial loading system includes: axially
Force assembly and axial piston bar；
Described axial force distribution assembly is fixed on described second framework；
Described axial piston bar is connected with described axial force distribution assembly, for transmitting axial tension and pressure；
Described piston rod top is fixedly linked with described upper shear box.
3. rock tension and compression ring shear test instrument as claimed in claim 2 is it is characterised in that described torque loading system includes: water
Flat force assembly, horizontal push-and-pull connecting rod and toothed disc；
Described toothed disc center opens up ring set fixed structure, is socketed on described axial piston bar；
Described level force assembly is connected with described toothed disc by waling stripe, drives described toothed disc with described axial piston
Bar is axis of rotation, and pulls described axial piston bar to rotate；
Wherein, the tooth that on described horizontal push-and-pull connecting rod, setting is engaged with described toothed disc coupling.
4. rock tension and compression ring shear test instrument as claimed in claim 3 is it is characterised in that described torque loading system also includes:
Horizontally-guided slide rail and matching slide block；
Described horizontal push-pull bar and described slide block are fixedly linked, and can follow slide block and move horizontally along described horizontally-guided slide rail.
5. rock tension and compression ring shear test instrument as claimed in claim 3 is it is characterised in that described ring set fixed structure includes: limit
Bit architecture and ball row；
Described position limiting structure is fixed between described toothed disc and described axial piston bar, for limiting in both horizontal directions
Relative displacement；
Described ball row is arranged between described toothed disc and described axial piston bar, is used for realizing toothed disc and described axial direction is lived
Stopper rod relative slip in the axial direction.
6. rock tension and compression ring shear test instrument as claimed in claim 5 it is characterised in that: be arranged in the middle part of described axial piston bar
Regular polygon outer edge surface, described position limiting structure adopts matching regular polygon spacing hole；
Described ball row is embedded between described regular polygon spacing hole and described regular polygon outer edge surface.
7. the rock tension and compression ring shear test instrument as described in any one of claim 3～6 is it is characterised in that described moment of torsion loads system
System also includes: toothed disc position limiting structure；
Described go out wheel disc position limiting structure be arranged between described first framework and described second framework, be clipped in described face of gear two
Side, limits its axial displacement.
8. rock tension and compression ring shear test instrument as claimed in claim 7 it is characterised in that: on described shear box and described under
In shear box, with the face of sample contacts on open up boss.
9. rock tension and compression ring shear test instrument as claimed in claim 8 it is characterised in that: described axial force distribution assembly is using axially
Hydraulic jack and the first hydraulic servo pump, described level force assembly adopts horizontal hydraulic pressure jack and the second hydraulic servo
Pump.
10. rock tension and compression ring shear test instrument as claimed in claim 9 it is characterised in that: described first framework and described second
The sliding sleeve being mated with described axial piston bar is respectively provided with framework, is socketed in the upper and lower of described axial piston bar respectively,
Limit its amplitude of oscillation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610859648.3A CN106353202B (en) | 2016-09-28 | 2016-09-28 | Rock tension-compression ring shear tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610859648.3A CN106353202B (en) | 2016-09-28 | 2016-09-28 | Rock tension-compression ring shear tester |
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| CN106353202A true CN106353202A (en) | 2017-01-25 |
| CN106353202B CN106353202B (en) | 2020-06-26 |
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| CN107167382A (en) * | 2017-07-06 | 2017-09-15 | 中国科学院武汉岩土力学研究所 | Tension and compression ring shear test instrument and tension and compression ring shear test system |
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| CN113237762A (en) * | 2021-01-07 | 2021-08-10 | 中国科学院武汉岩土力学研究所 | Rock tension-compression ring shear test method |
| CN113281194A (en) * | 2021-05-21 | 2021-08-20 | 东北大学 | Shear box device suitable for rock full stress space is loaded |
| CN117288603A (en) * | 2023-11-24 | 2023-12-26 | 中国电建集团华东勘测设计研究院有限公司 | Up-to-down resistance type multi-layer high-efficiency ring shear tester and application thereof |
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| CN107167382A (en) * | 2017-07-06 | 2017-09-15 | 中国科学院武汉岩土力学研究所 | Tension and compression ring shear test instrument and tension and compression ring shear test system |
| CN110044726A (en) * | 2019-04-04 | 2019-07-23 | 中国地质大学（武汉） | One kind being suitable for native rock contact surface ring shear apparatus pilot system |
| CN110044726B (en) * | 2019-04-04 | 2023-10-13 | 中国地质大学（武汉） | Be applicable to earth rock contact surface ring shear apparatus test system |
| CN111879604A (en) * | 2020-09-10 | 2020-11-03 | 贵州省质安交通工程监控检测中心有限责任公司 | Anchor structure surface anchoring performance tester |
| CN111879604B (en) * | 2020-09-10 | 2023-07-07 | 贵州省质安交通工程监控检测中心有限责任公司 | Anchor performance tester for anchor structure surface |
| CN113237762A (en) * | 2021-01-07 | 2021-08-10 | 中国科学院武汉岩土力学研究所 | Rock tension-compression ring shear test method |
| CN113281194A (en) * | 2021-05-21 | 2021-08-20 | 东北大学 | Shear box device suitable for rock full stress space is loaded |
| CN117288603A (en) * | 2023-11-24 | 2023-12-26 | 中国电建集团华东勘测设计研究院有限公司 | Up-to-down resistance type multi-layer high-efficiency ring shear tester and application thereof |
| CN117288603B (en) * | 2023-11-24 | 2024-03-08 | 中国电建集团华东勘测设计研究院有限公司 | Up-to-down resistance type multi-layer high-efficiency ring shear tester and application thereof |
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|---|---|
| CN106353202B (en) | 2020-06-26 |
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