CN106053237A - Seismic oscillation simulation testing machine for macroscopic and microscopic damage joint tracking of rock mass and method thereof - Google Patents
Seismic oscillation simulation testing machine for macroscopic and microscopic damage joint tracking of rock mass and method thereof Download PDFInfo
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- CN106053237A CN106053237A CN201610648825.3A CN201610648825A CN106053237A CN 106053237 A CN106053237 A CN 106053237A CN 201610648825 A CN201610648825 A CN 201610648825A CN 106053237 A CN106053237 A CN 106053237A
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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
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a seismic oscillation simulation testing machine for macroscopic and microscopic damage joint tracking of rock mass and a method thereof. The testing machine provided by the invention is suitable for real-time tracking measurement of macroscopic deformation and microscopic damage under the action of different seismic oscillations. The testing machine comprises an MTS vertical press machine, a door-type supporting frame, a vertical pressure-bearing platform, a rigid working platform, a rigid indenter, an MTS lateral press machine, a sealed anti-radiation test chamber, a test chamber supporting rod, a macroscopic optical camera, a microscopic optical camera, a CT scanning machine, a strong spotlight, a locating rod, a data processor, a terminal server and several lines. Under the action of different seismic oscillations, full-field strain measurement of rock mass in different scales can be realized, thus providing laboratory testing technical support for determination of macroscopic and microscopic mechanical parameters and identification of dynamic damage of rock mass.
Description
Technical field
The present invention relates to dynamic rock mechanics laboratory test technical field, be specifically related to a kind of grand microscopic damage of rock mass combine with
The imitative earthquake motion testing machine of track and method.
Background technology
In recent years, China's infrastructure construction quickly grows, and along with all kinds of long big traffic (water conservancy project) tunnel (tunnel), advises greatly
The engineerings such as mould hypogee (group) are in succession built up and come into operation, and emerge the rock mechanics the most relevant to underground engineering and ask
Topic, for being in the underground engineering of highly seismic region, dynamic rock mechanics problem to be solved, need by disturbance rock
The dynamic behavior of body is studied, and grasps Dynamic response to earthquake and the Mechanism of Deformation And Failure of underground structure whereby.Rock mass
Often having the features such as anisotropism, noncontinuity, anisotropy, its mechanical characteristic has a big chunk to depend between crack
Interact and the regularity of distribution of local damage weakening region.Rock mass (including outwardly and inwardly) macroscopic view crack and microscopic damage
Formed, develop and interaction process, stress, deformation and the vandalism of itself is suffered from important impact.Rock mass is situated between
Matter gradual destruction mechanism is the foundation of evaluation engineering rock terrain macro mechanics parameter, is also that prediction underground engineering country rock in earthquake is steady
Basis qualitatively, is the important ingredient of rock (moving) mechanics.Therefore, the research rock mass grand thin sight under earthquake motion effect
(outwardly and inwardly) multiple dimensioned behavior, discloses rock mass damage Mechanism of Deformation And Failure, prediction structural failure for deep
Pattern and instruct underground engineering Aseismic Design, all has and is of great significance.
According to the retrieval to each periodical, document and patent applied for, find that microscopic damage grand with rock mass combines tracking
The imitative functionally similar equipment of earthquake motion testing machine rarely has report.(earthquake simulation shaking table technology is in the development of China for Gao Chunhua etc.
[J]. civil engineering journal, 2014,47 (8): 9-19.) that the Recent Progresses In The Development of earthquake simulation dynamical system has been carried out system is detailed
Introduction, the most do not mention and be related to be applied on earthquake motion testing machine optical measuring system and x-ray inspection equipment
Precedent.Liu Yonglu (digital picture measures technology applied research [D] in Geotechnical Engineering is tested. Dalian: Dalian University of Science & Engineering is big
, and 2008.) mainly describe the Digital image technology including optical instrument in the grand thin sight accurate fields of measurement of deformation of rock mass
Development, but be not directed in the whole text this technology rock mass dynamics test in application.At present, at each periodical retrieved and literary composition
In offering, it is showed no the report of the imitative earthquake motion testing machine combining tracking about the grand microscopic damage of rock mass.
Summary of the invention
It is an object of the invention to provide the grand microscopic damage of a kind of rock mass and combine imitative earthquake motion testing machine and the method for tracking,
It can be measured the whole audience strain on rock mass different scale, join for the grand mesomechanics of rock mass under different simulating seismic motion effects
Number determines provides laboratory test technical support with damage identification of dynamic behavior.
The technical solution used in the present invention is as follows:
The grand microscopic damage of a kind of rock mass combines the imitative earthquake motion testing machine of tracking, including an airtight radioprotective proof box,
Outside the end face of described airtight radioprotective proof box, it is provided with one inserts into the inner portion, and apply to be pressed downward against to its inside sample
The vertical pressure machine of power；The portion of inserting into the inner it is provided with outside two relative sides of airtight radioprotective proof box, and in it
Portion's sample applies the lateral pressure machine of horizontal pressure force；It is additionally provided with macroscopic view in the same side within described airtight radioprotective proof box
Optical camera, carefully see optical camera, CT Scanner and concentration illumination device；Described vertical pressure machine, lateral pressure machine, grand
See optical camera, carefully see optical camera, CT Scanner is connected with signal processing apparatus, described signal processing apparatus and terminal clothes
Business device is connected.
Described testing machine can tracking measurement rock mass macroscopic view and the whole audience carefully seeing different scale (100 μm-10cm) should simultaneously
Becoming and damage, both related to rock mass surface, can being deep into again inside rock mass, its effect is equivalent to stick at specimen surface ten hundreds of
The high accuracy foil gauge of different azimuth, imbeds again numerous strain monitoring device inside sample.
Sample used is typically required to be processed into regular hexahedron, and six surfaces are required to before the test through careful polishing
Processing, speckle need to be coated in the surface facing optical camera camera lens；Smooth surface is conducive between sample and rigid pressure head
Uniform power transmission, speckle can as the station location marker of specimen surface each point, assistance optical camera as a reference point monitoring displacement.
Further, described vertical pressure machine is arranged on the crossbeam of gate scaffold, the fuselage of vertical pressure machine
Through airtight radioprotective proof box top, sample is implemented the anti-spoke of interface solid of pressure, fuselage and airtight radioprotective proof box
Injection seals.
Further, described vertical pressure machine, the end of lateral pressure machine are provided with rigid pressure head, and mounting means uses
Ball-joint.
Further, described lateral pressure machine has two, is symmetrically mounted on the left and right pillar of gate scaffold,
The fuselage of two lateral pressure machines tries with airtight radioprotective symmetry through airtight radioprotective proof box left side and right side, fuselage
The interface of tryoff solid radioprotective glue seals.
Further, described macroscopical optical camera, carefully see optical camera, CT Scanner and concentration illumination device respectively by
Four location bars support；Bar lower end, location is rigidly connected with rigidity work platforms, and stage casing passes airtight radioprotective proof box, with close
The interface solid radioprotective glue closing radioprotective proof box seals.
Further, described airtight radioprotective proof box is fixed on rigidity work platforms by proof box support rod.
Further, three described forcing presses the most independently control, and its internal motion piston can be simultaneously each to preset
Speed or acceleration move, to specimen surface apply any dynamic load, among these, the dynamic load parameter that can relate to includes width
Value, frequency, waveform etc..
Further, also include that prefabricated cushion block and tray, described cushion block and tray are placed on airtight radioprotective test
Case, carrys out the envelop of function of elongation test machine, makes it possible to serve the double-shaft power test of different size sample.
The method utilizing said apparatus to carry out testing is as follows:
1), before on-test, manipulate forcing press, make the moving piston within forcing press each move with pole speed slowly,
Until rigid pressure head contacts with specimen surface, it is applied an initial static pressure, at the beginning of simulation underground country rock is born whereby
Beginning crustal stress；
2), before applying dynamic load, holding rigid pressure head contacts with specimen surface, makes sample that Rigid Body In Space the most not occur
Displacement, the optical camera of regulation macroscopic view successively, thin sight optical camera and the fuselage positions of CT Scanner, make sample occur in each camera
Take pictures the visual field central authorities, then regulate focal length and the aperture of respective camera lens, in order to gather best in quality image；
3) applying dynamic load, the different dynamic loads combination that forcing press provides can be internally generated any morphological characteristic at sample
Stress wave, orthogonal stress wave, through a series of interference and superposition, forms again the stress field of complexity, simulates various earthquake action whereby
Stress state with lower country rock each point；
4), in process of the test, specimen surface millimetre-sized macroscopic view displacement (crack) and micron-sized thin sight displacement (crackle) are treated
Collected by camera is learned, after internal injury is then caught by CT Scanner respectively by macroscopic view optical camera and thin sightseeing；Process test in time
Data.
The present invention compared with prior art, has the following advantages and effect:
1. testing machine can simultaneously tracking measurement rock mass macroscopic view and carefully see different scale (100 μm-10cm) whole audience strain and
Damage, had both related to rock mass surface, can being deep into again inside rock mass, and its effect is equivalent to stick ten hundreds of difference at specimen surface
The high accuracy foil gauge in orientation, imbeds again numerous strain monitoring device inside sample；
2. testing machine can apply combination in any dynamic load to sample under biaxial conditions, meets any simulating seismic motion and makees
The requirement studied with lower rock mass mechanics characteristic and deformation failure；Wherein, the dynamic load parameter that can relate to include amplitude, frequency,
Waveform etc., the dynamic load frequency range that testing machine provides is 0 15Hz, and the frequency that practically shake can be completely covered；
3. can be constructed the stress state of sample each point by the dynamical system of testing machine, by the optics of testing machine with penetrate
System measured by line can follow the tracks of the displacement information (the follow-up strain information being converted into each point) of sample each point, can be real between two systems
Existing signal synchronizes, it is thus achieved that the stress and strain information that sample optional position is corresponding on same time point, thus sets up the time
The relation of position ess-strain；
4. testing machine uses flexibly, is applicable to multiple special circumstances, and such as, three forcing presses can be that sample provides quiet
Load, makes testing machine can serve the test of all kinds of twin shaft statics；Lateral pressure machine does not starts, and only opens vertical pressure machine,
Make testing machine can serve uniaxial test；Optics does not starts with radionetric survey system, and only turn on the power system, makes the testing machine can
For conventional double-shaft power test, etc.；
5. testing machine versatility is good, reliability is high, precision high (macroscopic view [cm] strain measurement precision reach 10-6, thin sight [μm]
Strain measurement precision reaches 10-4), modern rock dynamic earthquake analysis requirement can be met.
Accompanying drawing explanation
Fig. 1 is cushion block, tray position relationship schematic diagram；
Fig. 2 is the imitative earthquake motion testing machine front view that the grand microscopic damage of a kind of rock mass combines tracking；
Fig. 3 is the imitative earthquake motion testing machine top view that the grand microscopic damage of a kind of rock mass combines tracking.
Wherein: 1 MTS vertical pressure machine, 2 gate scaffolds, 3 vertical pressure-bearing platforms, 4 rigidity work platformses,
5 rigid pressure heads, 6 MTS lateral pressure machines, 7 airtight radioprotective proof boxs, 8 proof box support rods, 9 macroscopic view optics
Camera, 10 carefully see optical camera, 11 CT Scanners, 12 kicker light devices, 13 location bars, 14 signal processors,
15 terminal servers；
Detailed description of the invention
The present invention will be further described with implementing example below in conjunction with the accompanying drawings:
The present invention relates to dynamic rock mechanics laboratory test technical field, be specifically related to a kind of grand microscopic damage of rock mass combine with
The imitative earthquake motion testing machine of track.This testing machine is applicable to rock mass macroscopic deformation under differently shock effect, microscopic damage in fact
Time tracking measurement, it is possible to achieve the Mechanics Parameters of Rock Mass under dynamic biaxial conditions determines and dynamic damage mechanism identification.
As shown in Figures 2 and 3, the grand microscopic damage of a kind of rock mass combines the imitative earthquake motion testing machine of tracking, including dynamical system
System, optics process and automatic control system with radionetric survey system and data.Dynamical system and optics exist with radionetric survey system
Locus upper part is overlapping, is substantially parallel in function setting, if both will be processed with automatic by main line and data
Control system is connected.
Dynamical system includes MTS vertical pressure machine 1, gate scaffold 2, vertical pressure-bearing platform 3, rigidity work platforms 4, just
Property pressure head 5, MTS lateral pressure machine 6；Optics and radionetric survey system include airtight radioprotective proof box 7, proof box support rod 8,
Macroscopic view optical camera 9, thin sight optical camera 10, CT Scanner 11, kicker light lamp 12 and location bar 13；Data process and control automatically
If system processed includes data processor 14, terminal server 15 and main line.Their annexation is:
MTS vertical pressure machine 1 is arranged on the crossbeam of gate scaffold 2, and fuselage pushes up through airtight radioprotective proof box 7
Portion, interface solid radioprotective glue seals；Vertical pressure-bearing platform 3 lower end is fixed on rigidity work platforms 4, and abutment body is through airtight anti-
Bottom radiation test case 7, interface solid radioprotective glue seals；MTS vertical pressure machine 1 bottom is provided with rigid pressure head 5, peace
Dress mode uses ball-joint；
MTS lateral pressure machine 6 has two, is symmetrically mounted on the left and right pillar of gate scaffold 2, and fuselage symmetry is worn
Crossing airtight radioprotective proof box 7 left part and right part, interface solid radioprotective glue seals；Two MTS lateral pressure machine 6 ends
Portion is fitted with rigid pressure head 5, and mounting means uses ball-joint；Macroscopic view optical camera 9 and thin optical camera 10 of seeing stretch into close
Close side in radioprotective proof box 7；Kicker light lamp 12 stretches into the same side in airtight radioprotective proof box 7；CT Scanner 11 stretches into
The same side in airtight radioprotective proof box 7；
Each camera, CT Scanner 11 and kicker light lamp 12 are supported by four location bars 13 respectively；Bar 13 lower end, location is with just
Sex work platform 4 is rigidly connected, and the interface solid radioprotective glue that stage casing is connected with airtight radioprotective proof box 7 seals；Airtight
Radioprotective proof box 7 is fixed on rigidity work platforms 4 by proof box support rod 8；Three MTS forcing presses, macroscopic view optics phases
If machine 9, thin see optical camera 10, CT Scanner 11 all by main line in succession with signal processor 14, terminal server 15 phase
Even.
MTS vertical pressure machine 1 and two MTS lateral pressure machines 6 all use electrohydraulic servo system to control, and connect three respectively
Independent PCS8000 controller.Each forcing press applies pressure to specimen surface by the displacement of moving piston in it, loads
The implementation of process is divided into power to control and Bit andits control two kinds.Different from conventional press, offer change is good at by this forcing press
Pressure, sample can be applied exactly all kinds of variable load, even when the amplitude of dynamic load, frequency change are very fast, still
There is outstanding performance；It can be easily accomplished significantly changing (even across the order of magnitude) of load intensity within the extremely short time, can
The frequency range realized is 0 15Hz, therefore shows advantage fully in earthquake synthesis field.As a example by Bit andits control loading procedure, fortune
The dynamic minimum velocity of displacement of piston is 10 μm/s, reaches as high as 8mm/s；Correspond, the forcing press tune to sample loading speed
Adjusting range also can reach 4 orders of magnitude, and the conversion time between each speed is all not over 1 second.MTS vertical pressure machine 1 fuselage
A size ofMoving piston displacement stroke scope is 0 100mm, and force scope is 0 800KN, MTS side
To forcing press 6 fuselage size it isMoving piston displacement stroke scope is 0 75mm, and force scope is 0
600KN。
Gate scaffold 2 is made up of essence steel, and sectional dimension is fixed, for 300mm × 300mm；The a height of 1650mm of interior headroom,
Interior a width of 1700mm.
Vertical pressure-bearing platform 3 is made up of essence steel, a size of 400mm × 400mm × 400mm.
Rigidity work platforms 4 is made up of essence steel, a size of 2900mm × 1500mm × 300mm.
Rigid pressure head 5 is made up of essence steel, and pressure surface is square, and a size of 400mm × 400mm, thickness is 50mm.
Internal volume a size of 800mm × 800mm × 1200mm that airtight radioprotective proof box 7 is made with 30mm thickness stereotype
Cuboid closed box, stereotype is for shielding the X-ray that CT Scanner 11 sends, Protection personnel health.Airtight radioprotective
Proof box 7 bonnet can be opened, it is simple to puts into or take out sample, and it is close that the seam crossing of bonnet and closed box body pastes solid radioprotective
Strip of paper used for sealing.
Proof box support rod 8 is made up, a size of of essence steelTotally 4, support airtight radioprotective respectively
4 angles of proof box 7.
Macroscopic view optical camera 9 model is IMPREX 16M, including ccd image sensor, optical lens, aperture regulation and control and machine
Body；The pixel of fuselage is 16,000,000, and ccd image sensor physical size is 24mm × 36mm, is adjusted by Schneider optical lens
Joint focal length, regulates light transmission capacity by aperture, it is ensured that the optimal shooting to specimen surface.It addition, wrap one layer around camera lens
The high printing opacity low astigmatism organic resin material that 0.5mm is thick, is used for keeping out the fragment being likely to occur when sample destroys and launches, protective glass
Head.
Thin optical camera 10 model of seeing is Manta 4M, including ccd image sensor, optical amplifier camera lens, aperture regulation and control
And fuselage；The pixel of fuselage is 4,000,000, and the amplification of optical lens is 10 times；Ccd image sensor physical size is 15mm
× 15mm, is focused by Schneider optical lens, regulates light transmission capacity by aperture, it is ensured that the optimal bat to specimen surface
Take the photograph.It addition, wrap the thick high printing opacity low astigmatism organic resin material of one layer of 0.5mm around camera lens, it is used for keeping out sample and destroys
Time the fragment that is likely to occur launch, protect camera lens.
CT Scanner 11 model is SIEMENS ATOM plus, spatial resolution 0.35mm × 0.35mm, minimum recognizable
Scope is 0.12mm3(thickness 1mm), density contrast resolution is 0.3% (3Hu), can be by the identification of internal for sample microscopic damage
Yardstick brings up to 0.35mm × 0.35mm × 1mm, obtains sample internal capillary densification → micro-crack under any dynamic loading and sprouts
Life → bifurcated → development → fracture → destruction → unloading waits the clear CT image in each stage.CT Scanner 11 combines computer and enters
Row image reconstruction, makes different densities material information in appointment aspect can show with the form of high resolution digital image.Separately
Outward, around camera lens, wrap the thick high printing opacity low astigmatism organic resin material of one layer of 0.5mm, be used for keeping out during sample destruction possible
The fragment occurred launches, and protects camera lens.
Kicker light device 12 selects the Aspherics2 lamp holder of dedolight company of Germany, and light and shade is adjustable.
Position bar 13 to be made up of essence steel, a total of 4, support macroscopic view optical camera 9, thin sight optical camera 10, CT respectively
Scanner unit 11 and kicker light lamp 12.The size of location bar 13 isBottom is with rigidity work platforms 5 screw thread even
Connecing, each fuselage or lamp body are fixed by metal clip in top.
The pci card of data processor 14 built-in America NI company, its function includes that signals collecting and signal synchronize.
The computer model of main flow on market selected by terminal server 15, and operating system is windows7, and software is
Labview.The information that data processor 14 both can have been transmitted by it carries out concentrating to be analyzed, it is also possible to carry out whole testing machine certainly
Dynamic control.
The method utilizing said apparatus to carry out testing is as follows:
1), before on-test, MTS vertical pressure machine 1 and two MTS lateral pressure machines 6 are manipulated by terminal server 15,
Make they internal moving pistons each move with pole speed slowly, until rigid pressure head 5 contacts with specimen surface, it is executed
Add an initial static pressure, the initial field stress that simulation underground country rock is born whereby；
2), before applying dynamic load, holding rigid pressure head 5 contacts with specimen surface, makes sample that Rigid Body In Space the most not occur
Displacement, the optical camera 9 of regulation macroscopic view successively, thin sight optical camera 10 and the fuselage positions of CT Scanner 11, make sample occur in
Each camera take pictures the visual field central authorities, then regulate focal length and the aperture of respective camera lens, in order to gather best in quality image；
3) applying dynamic load by terminal server 15 manipulation, MTS vertical pressure machine 1 and two MTS lateral pressure machines 6 carry
The different dynamic loads combination of confession can be internally generated the stress wave of any morphological characteristic at sample, and orthogonal stress wave is through a series of dry
Relate to and superposition, form again the stress field of complexity, simulate the stress state of country rock each point under various earthquake motion effect whereby；
4), in process of the test, specimen surface millimetre-sized macroscopic view displacement (crack) and micron-sized thin sight displacement (crackle) are treated
Gathered, after internal injury is then caught by CT Scanner 11 by macroscopic view optical camera 9 and thin optical camera 10 of seeing respectively；In time at end
Test data is processed by post processor on end server 15.Among these, including an important line be exactly according to selected
Specimen size, is converted into the strain information of respective points by the displacement information of specimen surface, and then the stress state with this point is built
Vertical contact, obtains the ess-strain time relationship of sample arbitrfary point, then combines sample other materials and power based on this
Learning characterisitic parameter, post processing obtains Changing Pattern and the mutual relation of more parameters.
Utilizing this testing machine to do the 7 grades of earthquake motion tests of concrete imitation Richter scale, result shows, this testing machine can be accomplished arbitrarily
Differently shake the simulation of combination, in process of the test concrete sample from surface to internal different spaces level, from 100 μm to
The strain of 10cm different measuring yardstick and damage, all can collected and post processing feed back to, on terminal server, determine for scholar
Mechanics Parameters of Rock Mass and research rock power micromechanism of damage provide test basis.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not the present invention is protected model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. the grand microscopic damage of rock mass combines the imitative earthquake motion testing machine of tracking, it is characterised in that: include an airtight anti-spoke
Penetrate proof box, outside the end face of described airtight radioprotective proof box, be provided with one insert into the inner portion, and to its inside sample
Apply the vertical pressure machine of downward pressure；It is provided with outside two relative sides of airtight radioprotective proof box and inserts into the inner
Portion, and its inside sample is applied the lateral pressure machine of horizontal pressure force；Same within described airtight radioprotective proof box
Side is additionally provided with macroscopic view optical camera, carefully sees optical camera, CT Scanner and concentration illumination device；Described vertical pressure machine,
Lateral pressure machine, macroscopic view optical camera, carefully see optical camera, CT Scanner is connected with signal processing apparatus, at described signal
Reason device is connected with terminal server.
2. the grand microscopic damage of rock mass as claimed in claim 1 combines the imitative earthquake motion testing machine of tracking, it is characterised in that: described
Vertical pressure machine be arranged on the crossbeam of gate scaffold, the fuselage of vertical pressure machine pass airtight radioprotective proof box top
Pressure implemented by sample by portion, and fuselage seals with the interface solid radioprotective glue of airtight radioprotective proof box.
3. the grand microscopic damage of rock mass as claimed in claim 1 combines the imitative earthquake motion testing machine of tracking, it is characterised in that: two
Described lateral pressure machine is symmetrically mounted on the left and right pillar of gate scaffold, and the fuselage symmetry of two lateral pressure machines is worn
Crossing airtight radioprotective proof box left side and right side, fuselage is close with the interface solid radioprotective glue of airtight radioprotective proof box
Envelope.
4. the grand microscopic damage of rock mass as claimed in claim 1 combines the imitative earthquake motion testing machine of tracking, it is characterised in that: described
Vertical pressure machine, the end of lateral pressure machine rigid pressure head is installed, mounting means uses ball-joint.
5. the grand microscopic damage of rock mass as claimed in claim 1 combines the imitative earthquake motion testing machine of tracking, it is characterised in that: described
Macroscopical optical camera, carefully see optical camera, CT Scanner and concentration illumination device and supported by four location bars respectively；Location bar
Lower end is rigidly connected with rigidity work platforms, and stage casing passes airtight radioprotective proof box, with the interface of airtight radioprotective proof box
Seal with solid radioprotective glue.
6. the grand microscopic damage of rock mass as claimed in claim 1 combines the imitative earthquake motion testing machine of tracking, it is characterised in that: three
Described forcing press the most independently controls, and its internal motion piston can move with speed or the acceleration each preset simultaneously, right
Specimen surface applies any dynamic load.
7. the grand microscopic damage of rock mass as claimed in claim 1 combines the imitative earthquake motion testing machine of tracking, it is characterised in that: also wrap
Including prefabricated cushion block and tray, described cushion block and tray are placed on airtight radioprotective proof box.
8. the imitative earthquake motion testing machine utilizing the grand microscopic damage of the rock mass described in claim 1-7 to combine tracking carries out the side tested
Method, it is characterised in that:
Before on-test, the moving piston in three forcing presses applies an initial static pressure to sample, simulates underground country rock institute
The initial field stress born；
Before applying dynamic load, continuation holding pressure head contacts with specimen surface, makes sample that Rigid Body In Space displacement the most not occur；
When applying dynamic load, the different dynamic loads combination of three forcing press offers can be internally generated any morphological characteristic at sample
Stress wave, orthogonal stress wave, through a series of interference and superposition, forms again the stress field of complexity, simulates various earthquake action whereby
Stress state with lower country rock each point；Meanwhile, in process of the test, specimen surface millimetre-sized macroscopic view displacement and micron-sized
Thin sight displacement is respectively by macroscopic view and thin collected by camera of going sightseeing, and internal injury is then caught by CT Scanner；These gather or catch
To information can be fed back on terminal unit by signal processor with the form of data group and high-definition image.
9. method as claimed in claim 8, it is characterised in that: the information collected is concentrated by described terminal unit,
Then the process of various diversification is carried out.
10. method as claimed in claim 9, it is characterised in that: described terminal unit is according to selected specimen size, by sample
The displacement information on surface is converted into the strain information of respective points, and then the stress state with this point is set up and contacted, and obtains sample
The ess-strain time relationship of arbitrfary point, then combine sample other materials and mechanics parameters based on this, locate afterwards
Reason obtains Changing Pattern and the mutual relation of more parameters.
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| CN110108601A (en) * | 2019-04-03 | 2019-08-09 | 东南大学 | A kind of device and method of 3D analysis particle flow regime under vibrating compacting state |
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| CN109001037B (en) * | 2018-06-12 | 2021-01-15 | 中国地质大学（武汉） | Mud rock dry-wet cycle disintegration test equipment providing real stress condition |
| CN110108601A (en) * | 2019-04-03 | 2019-08-09 | 东南大学 | A kind of device and method of 3D analysis particle flow regime under vibrating compacting state |
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| CN110487634B (en) * | 2019-09-05 | 2024-05-31 | 安徽理工大学 | System and method for fine testing of rock core strain and resistivity under loading state |
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| CN113758807A (en) * | 2021-09-27 | 2021-12-07 | 同济大学 | Cross-scale fractured rock mass hydraulic coupling visualization test method |
| CN114755104A (en) * | 2022-06-14 | 2022-07-15 | 中国建筑第五工程局有限公司 | Medical radiation-proof concrete modified micro-crack simulation testing machine |
| CN115078063A (en) * | 2022-07-04 | 2022-09-20 | 山东大学 | Device and method for synchronously measuring surface and internal strain of X-ray transmissive solid |
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