CN106198264A - A kind of true triaxial rock adds unloading disturbance experimental provision and using method thereof - Google Patents
A kind of true triaxial rock adds unloading disturbance experimental provision and using method thereof Download PDFInfo
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- CN106198264A CN106198264A CN201610513764.XA CN201610513764A CN106198264A CN 106198264 A CN106198264 A CN 106198264A CN 201610513764 A CN201610513764 A CN 201610513764A CN 106198264 A CN106198264 A CN 106198264A
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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
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic 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
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0256—Triaxial, i.e. the forces being applied along three normal axes of the specimen
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Abstract
The invention discloses a kind of true triaxial rock and add unloading disturbance experimental provision, including Vertical loading device and horizontal loading apparatus, described Vertical loading device and the orthogonal thereto distribution of horizontal loading apparatus.Being equipped with load cylinder in Vertical loading device hollow, and four direction upper and lower, forward and backward, the two ends, left and right of horizontal loading apparatus are equipped with pressure transmission post, and pressure transmission post is driven by load cylinder, to realize carrying out test specimen hexahedro stress loading simulation.The present invention can be based under the hexahedro stress of true triaxial three-dimensional, it is thus achieved that increase the loading rock burst test method of vertical load after the unloading rock burst experimental technique of rock sample one side stress Condition of Sudden Unloading and one side Condition of Sudden Unloading.
Description
Technical field
The present invention relates to Rock Mechanics Test device, particularly to a kind of true triaxial rock add unloading disturbance experimental provision and
Its using method.
Background technology
Deep rock mass, due to its deadweight and the impact of earth structure campaign, itself is the storage body of stress and energy, is opening
Before perturbation action, oneself is in a kind of higher stress state, and stores substantial amounts of elastic energy.Work as rock excavation, original
Poised state is broken, and causes primary stress and the redistribution of energy, shifts and discharge, along with work in actual deep engineering
Face and the driving in tunnel, around coal and rock often experiences and reciprocal adds unloading disturbance, is that the disturbance of a circulation adds unloading carrier,
This process not only causes rock strength to change, and may produce rock simultaneously and add unloading rock burst, brings inestimable economic damage
Lose, open disturbance engineering characteristics for this, need badly carry out the true triaxial of rock under high-stress state add unloading disturbance experiment, obtain
Obtain mechanical strength and the deformation behaviour of rock under high-stress state, seek the damage development of deep rock mass and rupture rule, for knowing
On-the-spot shock hazard Yu Ce not provide certain theoretical and test basis.
At present true triaxial rock experiment device substantially achieve permanent test force, permanent displacement, permanent deformation, constant speed test force,
Constant speed displacement, constant speed deformation and the sequence test of the multiple test rate of multiple control modes.Contain high temperature ring simultaneously
Border module, creep module, seepage flow module and relevant shearing experiment, but a kind of unloading that adds for deep rock mass is disturbed
Dynamic experimental provision.Existing experimental provision has the disadvantage that 1, cannot realize the unloading rock burst experiment of one side Condition of Sudden Unloading；2, nothing
Method increases the loading rock burst test of vertical load after realizing one side Condition of Sudden Unloading；3, cannot realize discontinuously rock sample being applied
The shock loading upset test of one or many impact.
Summary of the invention
The technical problem to be solved is to provide a kind of true triaxial rock and adds unloading disturbance experimental provision and make
By method, this device is obtained in that the heavily stressed mechanical strength adding rock under unloading disturbance state and deformation behaviour.
For achieving the above object, the present invention provides following technical scheme: a kind of true triaxial rock adds unloading disturbance experiment
Device, including Vertical loading device (1) and horizontal loading apparatus (9), described Vertical loading device (1) and horizontal loading apparatus
(9) orthogonal thereto distribution, it is characterised in that: described Vertical loading device (1) hollow, and be all provided with on four direction upper and lower, forward and backward
Having load cylinder, the two ends, left and right of described horizontal loading apparatus (9) to be equipped with pressure transmission post, described pressure transmission post is driven by load cylinder
Dynamic, to realize test specimen is carried out hexahedro stress loading simulation.
As the further optimization of such scheme, described Vertical loading device (1) includes entablature (16), sill
(17), front column (18), rear column (19), described entablature (16) is provided with the first load cylinder (3), and described first loads
Oil cylinder (3) is used for loading vertically downward；Described front column (18) is provided with the second load cylinder (2), and described second loads
Oil cylinder carries out horizontal addload；Described rear column (19) is provided with the 3rd load cylinder (4), and described 3rd load cylinder is for dynamically to add
Carry oil cylinder, carry out horizontal addload, and pressure reduces to zero in can realizing very short time；Described sill (17) is provided with the 4th loading
Oil cylinder (7), described 4th load cylinder carries out Vertical loading, and can carry out vibrating or impact type disturbance according to different output frequencies
Load.
As the further optimization of such scheme, described 4th load cylinder is provided with disturbance pressure head (13).
As the further optimization of such scheme, the medial surface of described sill (17) is provided with bracing frame (6), described
Support is provided with through hole, and disturbance pressure head passes described through hole.
As the further optimization of such scheme, described horizontal loading apparatus (9) includes that the left side being located at connector two ends adds
Carrier, right loading frame (20), the medial surface of described left loading frame and right loading frame is equipped with pressure transmission post (12), described right loading
Frame is provided with the 5th load cylinder.
As the further optimization of such scheme, the bottom of described left loading frame and right loading frame is equipped with can be along level
The pulley that guide rail moves.
As the further optimization of such scheme, guiderail base (10) is provided with support base frame (14), supports base frame (14)
With guiderail base (10) orthogonal thereto distribution, described Vertical loading device (1) is installed in support base frame (14)；Horizontal guide rail (15)
Being supported by guiderail base (10), horizontal loading apparatus (9) moves left and right on horizontal guide rail (15).
A kind of true triaxial rock adds the using method of unloading disturbance experimental provision, comprises the following steps:
1), being placed on bracing frame (6) by rock sample (5), the first load cylinder (3) starting vertical direction adds with the 4th
Carry the second load cylinder (2) and the 3rd load cylinder (4), the horizontal loading apparatus of left and right directions of oil cylinder (7), fore-and-aft direction
(9) the 5th load cylinder (8) and pressure transmission post (12) thereof, complete the hexahedro loading of three-phase；
2), when being loaded into certain load, the 3rd load cylinder (4) the moment unloading of horizontal direction, complete to unload rock burst real
Test.
A kind of true triaxial rock adds the using method of unloading disturbance experimental provision, comprises the following steps:
1), being placed on bracing frame (6) by rock sample (5), the first load cylinder (3) starting vertical direction adds with the 4th
Carry the second load cylinder (2) and the 3rd load cylinder (4), the horizontal loading apparatus of left and right directions of oil cylinder (7), fore-and-aft direction
(9) the 5th load cylinder (8) and pressure transmission post (12) thereof, complete the hexahedro loading of three-phase；
2), when being loaded into certain load, the 3rd load cylinder (4) the moment unloading of horizontal direction, simultaneously vertical direction
First load cylinder (3) increases vertical load, completes to unload rock burst experiment.
A kind of true triaxial rock adds the using method of unloading disturbance experimental provision, comprises the following steps:
1), rock sample (5) is placed on bracing frame (6), starts first load cylinder (3) of vertical direction, front and back
To the second load cylinder (2), the 5th load cylinder (8) of horizontal loading apparatus (9) of left and right directions and pressure transmission post (12) thereof,
Select in the 4th load cylinder (7) of vertical direction or the 3rd load cylinder (4) of horizontal direction simultaneously, complete three-phase
Five loadings；
2) start the 3rd load cylinder (4) or the 4th load cylinder (7) of vertical direction, in the horizontal direction, apply one
Unload load as disturbance load with adding of periodic cycle by a small margin, record the ess-strain of whole process simultaneously, obtain rock
The test specimen (5) physical state when different stress levels is by disturbance, completes rock disturbance experiment.
Compared with prior art, a kind of true triaxial rock of the present invention adds unloading disturbance experimental provision and has following useful effect
Really:
(1), a kind of true triaxial rock of the present invention add unloading disturbance experimental provision, have three mutually perpendicular directions
Independent loads system, horizontal dynamic in the horizontal direction loads cylinder with Condition of Sudden Unloading, can expose a side surface of test specimen, mould
Intending producing after excavation in underground engineering free face, the energy of rock mass inner accumulated produces showing of rock burst to the release of free face direction
As, for determining that the stress state that rock burst occurs provides the means of necessity；Based under the hexahedro stress of true triaxial three-dimensional, obtain
Increase the loading rock of vertical load after the unloading rock burst experimental technique of test specimen one side stress Condition of Sudden Unloading and one side Condition of Sudden Unloading
Quick-fried test method.
(2), a kind of true triaxial rock of the present invention adds unloading disturbance experimental provision, it is possible to by the disturbance pressure of multi-form
Head realizes the model of action of different disturbing load: the form of point, the form in face, the form that links work at selected spots with that in entire areas act on rock sample.
(3), a kind of true triaxial rock of the present invention add unloading disturbance experimental provision, horizontal loading apparatus is one-body molded, whole
Body casts, and meets the rigidity requirement parameter of system.Load cylinder is arranged on the right loading frame of horizontal loading apparatus, and drive is located at
Pressure transmission post on right loading frame, to left movement, is given one counteracting force to the right of right loading frame simultaneously, is driven whole horizontal addload
Device moves right, and the pressure transmission post being located on left loading frame moves right, it is ensured that the horizontal loading apparatus water to rock sample
Two ends, flat left and right load pressurized simultaneously.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is partial enlarged drawing at the A of Fig. 1；
Fig. 3 is the front view of horizontal loading apparatus of the present invention；
Fig. 4 is the side view of Fig. 3.
In figure: 1, Vertical loading device；2, the second load cylinder；3, the first load cylinder；4, the 3rd load cylinder；5, rock
Stone test specimen；6, bracing frame；7, the 4th load cylinder；8, the 5th load cylinder；9, horizontal loading apparatus；10, guiderail base；11、
Pulley；12, pressure transmission post；13, disturbance pressure head；14, base frame is supported；15, guide rail；16, entablature；17, sill；18, front column；
19, rear column；20, right loading frame.
Detailed description of the invention
For making the purpose of invention, technical scheme and advantage of greater clarity, below by accompanying drawing and embodiment, to this
Invention is further elaborated.However, it should be understood that specific embodiment described herein is only in order to explain the present invention,
It is not limited to the scope of the present invention.
As Fig. 1 is to shown in 4, and one true triaxial rock of the present invention adds unloading disturbance experimental provision, and a kind of true triaxial rock adds
Unloading disturbance experimental provision, including Vertical loading device 1 and horizontal loading apparatus 9, Vertical loading device 1 and horizontal loading apparatus
Orthogonal thereto distribution, Vertical loading device hollow, and four direction upper and lower, forward and backward are equipped with load cylinder, and horizontal addload fills
The two ends, left and right put are equipped with pressure transmission post, and described pressure transmission post is driven by load cylinder, to realize test specimen is carried out hexahedro stress
Loading simulation.
In this preferred embodiment, horizontal guide rail 15 is supported by guiderail base 10, and guiderail base 10 is provided with support base frame
14, support base frame 14 and the orthogonal thereto distribution of guiderail base 10, guiderail base 10 is hinged to by high-strength bolt with supporting base frame 14
Integrally, Vertical loading device 1 is installed on support base frame 14, and horizontal loading apparatus moves left and right on horizontal guide rail.
Vertical loading device 1 includes entablature 16, sill 17, front column 18, rear column 19, and entablature 16 is provided with
One load cylinder 3, the first load cylinder 3 is used for loading vertically downward；Front column 18 is provided with the second load cylinder 2, the
Two load cylinders carry out horizontal addload；Rear column 19 is provided with the 3rd load cylinder 4, and the 3rd load cylinder is dynamic load oil
Cylinder, carries out horizontal addload, and can realize instantaneous pressure and reduce to zero；Sill 17 is provided with the 4th load cylinder 7, and the 4th loads oil
Cylinder carries out Vertical loading, and can carry out vibration type disturbance loading according to different output frequencies.In this preferred embodiment, the 4th loads
Oil cylinder is provided with disturbance pressure head 13, and the disturbance pressure head of multi-form realizes different disturbing load.Set on the medial surface of sill 17
Bracing frame 6, rock sample 5 is had to be placed in bracing frame 6.And bracing frame is provided with through hole, disturbance pressure head passes through hole, to rock sample
5 carry out perturbation pressure test.
Horizontal loading apparatus 9 includes being located at the left loading frame at connector two ends, right loading frame 20, left loading frame and right loading
Being equipped with pressure transmission post 12 on the medial surface of frame, the center of loading frame is located at by pressure transmission post.Right loading frame is provided with the 5th loading
Oil cylinder, the bottom of left loading frame and right loading frame is equipped with the pulley 11 that can move along the guide rail 15 of level.5th loads oil
Cylinder 8 is arranged on the right loading frame of horizontal loading apparatus, drives the pressure transmission post being located on right loading frame to left movement, gives the right side simultaneously
One counteracting force to the right of loading frame, drives whole horizontal loading apparatus to move right, the pressure transmission post being located on left loading frame
Move right, it is ensured that horizontal loading apparatus loads pressurized to the two ends, level left and right of rock sample simultaneously.
A kind of true triaxial rock of the present invention adds unloading disturbance experimental provision, the first load cylinder, the second load cylinder,
Three load cylinders, the 4th load cylinder are positioned on same vertical, upper and lower crossbeam and the frame like structure of forward and backward column composition
Center constitute confined pressure room, it is indoor that rock sample is positioned over confined pressure.
A kind of true triaxial rock that this preferred embodiment provides adds unloading disturbance experimental provision, and load cylinder parameter is as follows:
(1) second load cylinder technical parameter:
Maximum pressure test force 3000kN, effective dynamometry scope 30kN-3000kN (1-100%FS), dynamometry resolution 20N
(± 1/180000, not stepping, omnidistance resolution constant), dynamometry precision indicating value ± 1% within, force value controls fluctuation degree and is less than
0.1%；Horizontal direction loading speed: 10N-50KN/s.
(2) first load cylinder technical parameters:
Maximum test force: 5000kN；Dynamometry scope 50kN-5000kN (1-100%FS), dynamometry resolution 30N (± 1/
180000, stepping, omnidistance resolution is not constant), dynamometry precision indicating value ± 1% within, force value controls fluctuation degree and is less than
0.1%；Vertical direction loading speed: 10N-50KN/s.
(3) the 3rd load cylinder technical parameters:
Maximum pressure test force 3000kN, effective dynamometry scope 30kN-3000kN (1-100%FS), dynamometry resolution 20N
(± 1/180000, not stepping, omnidistance resolution constant), dynamometry precision indicating value ± 1% within, force value controls fluctuation degree and is less than
0.1%；Horizontal direction loading speed: 10N-50KN/s, response frequency 50Hz of dynamic oil cylinder；Response speed 100mm/s.
(4) the 4th load cylinder technical parameters:
A () shock vibration load: the variable 0-500kN of impulsive force amplitude, can apply once or many rock sample discontinuously
Secondary Shocks.
(b) vibrational perturbation load (random waveform, sine wave, triangular wave, square wave, oblique wave etc.): oscillating load amplitude is variable
0-500kN.Changeable frequency 0-50Hz (amplitude and the change of frequency tunable).
Effective dynamometry scope 5kN-500kN of disturbing load, dynamometry precision ± 0.5%FS.
The requirement of disturbing load: the application point on waveform, rock sample and angle of incidence, frequency, peak-to-valley value, width can be changed
Value, persistent period and phase place, and disturbing load can be in any instant on overall process stress-strain diagram at rock sample
Load.
The model of action of (c) disturbing load:
1. the form put, such as disturbance pressure head directly act on certain specified point of rock sample；
2. the form in face, such as disturbance pressure head directly act on certain given side of rock sample, act on rock sample.
Can be to be a kind of form therein or the combination of two kinds of forms.
(5) the 5th load cylinder technical parameters:
Maximum pressure test force 3000kN, effective dynamometry scope 30kN-3000kN (1-100%FS), dynamometry resolution 20N
(± 1/180000, not stepping, omnidistance resolution constant), dynamometry precision indicating value ± 1% within, force value controls fluctuation degree and is less than
0.1%；Horizontal direction loading speed: 10N-50KN/s.
A kind of true triaxial rock of the present invention adds unloading disturbance experimental provision compared with prior art,
1), having the independent loads system three mutually perpendicular directions, horizontal dynamic in the horizontal direction loads cylinder
A side surface of test specimen with Condition of Sudden Unloading, can be exposed, simulation underground engineering produces free face after excavation, rock mass inner accumulated
Energy produces the phenomenon of rock burst, for determining that the stress state that rock burst occurs provides the hands of necessity to the release of free face direction
Section；Based under the hexahedro stress of true triaxial three-dimensional, it is thus achieved that the unloading rock burst experimental technique of test specimen one side stress Condition of Sudden Unloading
With increase the loading rock burst test method of vertical load after one side Condition of Sudden Unloading, one side Condition of Sudden Unloading refers to that the load in certain face is fast
Speed reaches zero, and other five keep load constant；
2), its horizontal addload framework use one piece casting structure, its purpose is to meet the rigidity requirement of system, load
Oil cylinder is arranged in the loading frame of horizontal addload frame ends, is equipped with pulley below loading frame so that whole horizontal addload framework
Can move in parallel on horizontal guide rail, when such structure ensure that horizontal addload to the horizontal addload two ends of confined pressure room simultaneously
Load；
3) model of action of different disturbing load can, be realized by the disturbance pressure head of multi-form: the form of point, face
Form, the form linked work at selected spots with that in entire areas act on rock sample.The form of point refers to that pressure head directly acts on certain of rock sample and refers to
Fixed point, the form in face refers to that pressure head directly acts on certain given side of rock sample.
A kind of true triaxial rock using the present invention adds unloading disturbance experimental provision and can simulate and carry out three kinds of experiments, its
One, carry out unloading rock burst experiment, comprise the following steps:
1), being placed on bracing frame (6) by rock sample (5), the first load cylinder (3) starting vertical direction adds with the 4th
Carry the second load cylinder (2) and the 3rd load cylinder (4), the horizontal loading apparatus of left and right directions of oil cylinder (7), fore-and-aft direction
(9) the 5th load cylinder (8) and pressure transmission post (12) thereof, complete the hexahedro loading of three-phase；
2), when being loaded into certain load, the 3rd load cylinder (4) the moment unloading of horizontal direction, complete to unload rock burst real
Test.
Its two, the second carry out unload rock burst experiment, comprise the following steps:
1), being placed on bracing frame (6) by rock sample (5), the first load cylinder (3) starting vertical direction adds with the 4th
Carry the second load cylinder (2) and the 3rd load cylinder (4), the horizontal loading apparatus of left and right directions of oil cylinder (7), fore-and-aft direction
(9) the 5th load cylinder (8) and pressure transmission post (12) thereof, complete the hexahedro loading of three-phase；
2), when being loaded into certain load, the 3rd load cylinder (4) the moment unloading of horizontal direction, simultaneously vertical direction
First load cylinder (3) increases vertical load, completes to unload rock burst experiment.
Its three, carry out rock disturbance experiment, comprise the following steps:
1), rock sample (5) is placed on bracing frame (6), starts first load cylinder (3) of vertical direction, front and back
To the second load cylinder (2), the 5th load cylinder (8) of horizontal loading apparatus (9) of left and right directions and pressure transmission post (12) thereof,
Select in the 4th load cylinder (7) of vertical direction or the 3rd load cylinder (4) of horizontal direction simultaneously, complete three-phase
Five loadings；
2) start the 3rd load cylinder (4) or the 4th load cylinder (7) of vertical direction, in the horizontal direction, apply one
Unload load as disturbance load with adding of periodic cycle by a small margin, record the ess-strain of whole process simultaneously, obtain rock
The test specimen (5) physical state when different stress levels is by disturbance, completes rock disturbance experiment.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.Should not be considered as limiting involved claim by any reference in claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only wraps
Containing an independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should
Description can also be formed those skilled in the art through appropriately combined as an entirety, the technical scheme in each embodiment
May be appreciated other embodiments.
Claims (10)
1. true triaxial rock adds a unloading disturbance experimental provision, including Vertical loading device (1) and horizontal loading apparatus (9),
Described Vertical loading device (1) and horizontal loading apparatus (9) orthogonal thereto distribution, it is characterised in that: described Vertical loading device (1)
Being equipped with load cylinder in hollow, and four direction upper and lower, forward and backward, the two ends, left and right of described horizontal loading apparatus (9) are all provided with
Pressure transmission post, described pressure transmission post is had to be driven by load cylinder, to realize rock sample is carried out hexahedro stress loading simulation.
A kind of true triaxial rock the most according to claim 1 adds unloading disturbance experimental provision, it is characterised in that: described vertically
Charger (1) includes entablature (16), sill (17), front column (18), rear column (19), and described entablature sets on (16)
The first load cylinder (3), described first load cylinder (3) is had to be used for loading vertically downward；Described front column sets on (18)
The second load cylinder (2), described second load cylinder is had to carry out horizontal addload；Described rear column (19) is provided with the 3rd loading oil
Cylinder (4), described 3rd load cylinder is dynamic load oil cylinder, carries out horizontal addload, and pressure is reduced in can realizing very short time
Zero；Described sill (17) is provided with the 4th load cylinder (7), and described 4th load cylinder carries out Vertical loading, and can be according to
Different output frequencies carry out vibrating or impact type disturbance loading.
A kind of true triaxial rock the most according to claim 2 adds unloading disturbance experimental provision, it is characterised in that: the described 4th
Load cylinder is provided with disturbance pressure head (13).
A kind of true triaxial rock the most according to claim 2 adds unloading disturbance experimental provision, it is characterised in that: described lower horizontal stroke
The medial surface of beam (17) is provided with bracing frame (6), and support frame as described above is provided with through hole, and disturbance pressure head passes described through hole.
A kind of true triaxial rock the most according to claim 1 adds unloading disturbance experimental provision, it is characterised in that: described level
Charger (9) includes being located at the left loading frame at connector two ends, right loading frame (20), described left loading frame and right loading frame
Being equipped with pressure transmission post (12) on medial surface, described right loading frame is provided with the 5th load cylinder.
A kind of true triaxial rock the most according to claim 1 adds unloading disturbance experimental provision, it is characterised in that: a described left side adds
The bottom of carrier and right loading frame is equipped with the pulley that can move along horizontal guide rail.
A kind of true triaxial rock the most according to claim 1 adds unloading disturbance experimental provision, it is characterised in that: guiderail base
(10) it is provided with support base frame (14), supports base frame (14) and guiderail base (10) orthogonal thereto distribution, described Vertical loading device
(1) it is installed in support base frame (14)；Horizontal guide rail (15) is supported by guiderail base (10), and horizontal loading apparatus (9) is at water
Level gauge moves left and right on (15).
8. a kind of true triaxial rock as according to any one of claim 1 to 7 adds the use of unloading disturbance experimental provision
Method, it is characterised in that: comprise the following steps:
1), being placed on bracing frame (6) by rock sample (5), the first load cylinder (3) starting vertical direction loads oil with the 4th
Cylinder (7), the second load cylinder (2) and the 3rd load cylinder (4) of fore-and-aft direction, the horizontal loading apparatus (9) of left and right directions
5th load cylinder (8) and pressure transmission post (12) thereof, complete the hexahedro loading of three-phase；
2), when being loaded into certain load, the 3rd load cylinder (4) the moment unloading of horizontal direction, complete to unload rock burst experiment.
9. a kind of true triaxial rock as according to any one of claim 1 to 7 adds the use of unloading disturbance experimental provision
Method, it is characterised in that: comprise the following steps:
1), being placed on bracing frame (6) by rock sample (5), the first load cylinder (3) starting vertical direction loads oil with the 4th
Cylinder (7), the second load cylinder (2) and the 3rd load cylinder (4) of fore-and-aft direction, the horizontal loading apparatus (9) of left and right directions
5th load cylinder (8) and pressure transmission post (12) thereof, complete the hexahedro loading of three-phase；
2), when being loaded into certain load, the 3rd load cylinder (4) the moment unloading of horizontal direction, the first of vertical direction simultaneously
Load cylinder (3) increases vertical load, completes to unload rock burst experiment.
10. a kind of true triaxial rock as according to any one of claim 1 to 7 adds the use of unloading disturbance experimental provision
Method, it is characterised in that: comprise the following steps:
1), rock sample (5) is placed on bracing frame (6), starts first load cylinder (3) of vertical direction, fore-and-aft direction
Second load cylinder (2), the 5th load cylinder (8) of horizontal loading apparatus (9) of left and right directions and pressure transmission post (12) thereof, simultaneously
Select in the 4th load cylinder (7) of vertical direction or the 3rd load cylinder (4) of horizontal direction, complete three-phase five
Load；
2) start the 3rd load cylinder (4) or the 4th load cylinder (7) of vertical direction, in the horizontal direction, apply one slightly
Degree and adding of periodic cycle, unload load as disturbance load, record the ess-strain of whole process simultaneously, obtain rock sample
(5) physical state when different stress levels is by disturbance, completes rock disturbance experiment.
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