CN106769393A - A kind of Rock Mechanics Test method of firm power loading - Google Patents
A kind of Rock Mechanics Test method of firm power loading Download PDFInfo
- Publication number
- CN106769393A CN106769393A CN201611129414.XA CN201611129414A CN106769393A CN 106769393 A CN106769393 A CN 106769393A CN 201611129414 A CN201611129414 A CN 201611129414A CN 106769393 A CN106769393 A CN 106769393A
- Authority
- CN
- China
- Prior art keywords
- rock sample
- rock
- loading
- pressure
- testing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
-
- 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
-
- 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
- G01N2203/0012—Constant speed test
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0087—Resistance to crushing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
- G01N2203/0232—High pressure
-
- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0658—Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
-
- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
-
- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0232—Glass, ceramics, concrete or stone
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02827—Elastic parameters, strength or force
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of Rock Mechanics Test method of firm power loading, including：Increase firm power Loading Control module on testing machine；Rock sample is placed on testing machine, and acoustic emission monitor(ing) probe is arranged on rock sample surface；Pressure is applied to the rock sample under constant rate of speed Loading Control pattern, loading speed is remainedV；Treat that rock sample stress reaches setting valueF, i.e. the stand under load power of rock sample reachesP,P=F×V, firm power Loading Control pattern is now switched to, loading speed is reduced while testing machine constantly increases the pressure that rock sample applies, but remain that loading speed is definite value with the product of pressureP, until rock sample is destroyed completely, pressure and displacement of pressing head, the acoustic emission signal of rock sample of testing machine are monitored and recorded in the process；The acoustic emission signal data of pressure, shift assays result and rock sample according to testing machine, analyze the failure law of rock sample.
Description
Technical field
The invention belongs to rock mechanics technical field, and in particular to a kind of Rock Mechanics Test side of firm power loading
Method.
Background technology
At present, the Rock Mechanics Test load mode being widely adopted has two kinds：One kind is constant rate of speed loading mode, i.e.,
The displacement of pressure head of testing machine is fixed value in unit interval；Another kind is in constant pressure gradient loading mode, i.e. unit interval
The increment of the pressure being applied to by pressure head of testing machine on rock sample is fixed value.Carried out by using this two kinds of load modes
Rock Mechanics Test, and to loading speed and barometric gradient quantification, standardization, researcher can obtain largely laterally can class
The rock basic mechanical parameter of ratio, these mechanics parameters have important reference value to rock engineering construction.But merit attention
, both load modes are almost non-existent in real rock mass stress, are researchers to study rock
The mechanical property of stone and design simplification with standardization experimental technique.
A large amount of engineering practices show, after rock mass engineering project excavation, one side country rock to dead zone contract is excavated, with initial
Deformation velocity, subsequent deformation velocity slows down gradually, until rock mass engineering project tends towards stability or destroys；On the other hand, rock mass engineering project is opened
Unloading effect after digging causes surrouding rock stress to be uprushed, hereafter with rock mass constantly to excavate dead zone in extrude, peripheral rock should
Power continues to raise, but elevated speed can slow down gradually, until rock mass engineering project tends towards stability or destroys.Accordingly, with respect to rock mass work
The surrouding rock deformation rule of journey is studied with failure mode, is carried out with constant pressure gradient loading mode using constant rate of speed loading mode
Related Rocks Experiments of Machanics are unsuitable for.
The content of the invention
For the problem that prior art is present, the present invention provides a kind of Rock Mechanics Test method of firm power loading,
Methods described is based on firm power loading mode, the deformation of rock and stress change procedure is more conformed to actual conditions, effectively
The deficiency of constant rate of speed loading mode and constant pressure gradient loading mode in experimentation is made up, can be more precisely anti-
Reflect rock deformation rule and destructive characteristics.The technical solution adopted by the present invention is：
A kind of Rock Mechanics Test method of firm power loading, comprises the following steps：
Step one：Increase being provided with the testing machine of constant rate of speed Loading Control module and constant pressure gradient Loading Control module
Firm power Loading Control module, is fixed for controlling the loading speed of pressure head of testing machine and the product of pressure in the unit interval
Value；
Step 2：Rock sample is placed on testing machine, and acoustic emission monitor(ing) probe is arranged on rock sample surface；
Step 3：Pressure is applied to the rock sample under constant rate of speed Loading Control pattern, loading speed is remainedV；
Step 4：Treat that rock sample stress reaches setting valueF, now, the stand under load power of rock sample reachesP,P=F×V, by institute
Constant rate of speed Loading Control pattern switching is stated for firm power Loading Control pattern, in the pressure that testing machine applies to rock sample
Loading speed is constantly reduced while increase, but remains that loading speed is definite value with the product of pressureP, until rock sample
Destroy completely, monitor and record pressure and displacement of pressing head, the acoustic emission signal of rock sample of testing machine in the process；
Step 5：The acoustic emission signal data of pressure, shift assays result and rock sample according to testing machine, analyze rock
The failure law of sample.
In the above method, the loading speedVMeet：0.00001<V<2, mm/s.
It is described to treat that rock sample stress reaches setting value in the above methodF,FSpan be 0.1<F<300, kN.
In the above method, the loading speed is definite value with the product of pressureP,PSpan be 0.000001<P<
600, W.
In the above method, the acoustic emission signal include impact rate, accumulation impact rate, specific energy, cumlative energy rate,bValue.
In the above method, the testing machine includes the loading examination of uniaxial loading testing machine, Biaxial stress testing machine and three axles
Test machine.
Beneficial effects of the present invention are：The present invention is based on firm power Loading Control pattern, in testing machine to rock sample
Loading speed is reduced while the pressure of applying constantly increases, the deformation of country rock and stress after rock mass engineering project is excavated is more conformed to and is become
Change process, effectively makes up the deficiency of constant rate of speed loading mode and constant pressure gradient loading mode in experimentation, can be with
More precisely reflect the failure law of rock.And, using firm power Loading Control pattern, can keep standardization, can
The experiment condition of analogy, being easy to the experimental data of researcher carries out extensive comparative studies.
Brief description of the drawings
Fig. 1 is the structural representation of Biaxial stress testing machine used in the embodiment of the present invention 1, the Biaxial stress experiment
Machine is widely used in Rock Mechanics Test field, can be used to determine the shear strength of the materials such as rock and concrete, wherein 1-rock
Stone sample, the double parallel structural plane of 2-rock sample, 3-Biaxial stress testing machine, 4-normal stress pressure head, 5-top are lived
Dynamic pressure plate, 6-horizontal shear stresses pressure head, 7-bottom fixation clip, the control of 8-pressure servo and Stress displacement record system,
9-acoustic emission monitor(ing) probe, 10-acoustic emission monitor(ing) control system.
Fig. 2 is the shear rate and shear stress-time graph of the granite of the embodiment of the present invention 1.
Fig. 3 is the shear stress and sound emission impact rate-time graph of the granite of the embodiment of the present invention 1.
Fig. 4 is the shear stress and acoustic emission energy rate-time graph of the granite of the embodiment of the present invention 1.
Fig. 5 clashes into number-time graph for the shear stress of the granite of the embodiment of the present invention 1 with accumulation sound emission.
Fig. 6 is the shear stress and accumulation acoustic emission energy-time graph of the granite of the embodiment of the present invention 1.
Fig. 7 for the embodiment of the present invention 1 granite shear stress withbValue-time graph.
Fig. 8 is the structural representation of uniaxial loading testing machine used in the embodiment of the present invention 2, and such testing machine extensively should
For Rock Mechanics Test field, can be used to determine the elastic modelling quantity and the basic ginseng such as Poisson's ratio of the materials such as rock and concrete
Number, wherein 1-rock sample, 4-normal stress pressure head, 5-top movable pressing plate, 7-bottom fixation clip, 8-pressure are watched
Clothes control adds with Stress displacement record system, 9-acoustic emission monitor(ing) probe, 10-acoustic emission monitor(ing) control system, 11-single shaft
Carry testing machine.
Fig. 9 is the loading speed and compression-time graph of the sandstone of the embodiment of the present invention 2.
Figure 10 is the compression and sound emission impact rate-time graph of the sandstone of the embodiment of the present invention 2.
Figure 11 is the compression and acoustic emission energy rate-time graph of the sandstone of the embodiment of the present invention 2.
Figure 12 clashes into number-time graph for the compression of the sandstone of the embodiment of the present invention 2 with accumulation sound emission.
Figure 13 is the compression and accumulation acoustic emission energy-time graph of the sandstone of the embodiment of the present invention 2.
Figure 14 for the embodiment of the present invention 2 sandstone compression withbValue-time graph.
Figure 15 is the structural representation of uniaxial loading testing machine used in the embodiment of the present invention 3, and such testing machine is extensive
Rock Mechanics Test field is applied to, coordinates wedge clamp to can be used to cleave rock, determine the anti-of the materials such as rock and concrete
Tensile strength, wherein 1-rock sample, 4-normal stress pressure head, 5-top movable pressing plate, 7-bottom fixation clip, 8-pressure
Force servo control with Stress displacement record system, 9-acoustic emission monitor(ing) probe, 10-acoustic emission monitor(ing) control system, 11-it is mono-
Axle loading tester.
Figure 16 is the loading speed and tension-time graph of the griotte of the embodiment of the present invention 2.
Figure 17 is the tension and sound emission impact rate-time graph of the griotte of the embodiment of the present invention 2.
Figure 18 is the tension and acoustic emission energy rate-time graph of the griotte of the embodiment of the present invention 2.
Figure 19 clashes into number-time graph for the tension of the griotte of the embodiment of the present invention 2 with accumulation sound emission.
Figure 20 is the tension and accumulation acoustic emission energy-time graph of the griotte of the embodiment of the present invention 2.
Figure 21 for the embodiment of the present invention 2 griotte tension withbValue-time graph.
Specific embodiment
The present invention is described in further details with specific embodiment below in conjunction with the accompanying drawings, described is to solution of the invention
Release rather than restriction.
Embodiment 1
A kind of granite double structure face shearing experiment method of firm power loading, comprises the following steps：
Step one：Add in the 300kN twin shafts for being provided with constant rate of speed Loading Control module and constant pressure gradient Loading Control module
Carry testing machine（Structural representation is as shown in Figure 1）Upper increase firm power Loading Control module, for controlling to be tried in the unit interval
The product of the loading speed and pressure of testing compressing head is definite value；
Step 2：To be placed on Biaxial stress testing machine by the granite sample of Brazil's splitting, granite specimen size is
100mm×100mm×140mm（Length × width × height）, the rock sample is divided into upper, middle, and lower part, thickness point by double structure face
Wei not 50mm, 40mm, 50mm；And 4 acoustic emission monitor(ing) probes are arranged on granite sample lower surface, front and rear surfaces each two
It is individual, as shown in Figure 1；
Step 3：In the vertical direction, the normal direction of 100kN is gradually applied to granite sample according to the constant rate of speed of 0.5mm/s
Power simultaneously keeps constant；In the horizontal direction, fixed granite sample bottom, and according to 0.5mm/s constant rate of speed on sample
Portion applies initial level thrust；
Step 4：Treat that the stress of granite sample horizontal direction reaches the stand under load power of setting value 30kN, i.e. granite and reaches
15W, is firm power Loading Control pattern by the constant rate of speed Loading Control pattern switching, continues to increase and rock sample is applied
It is stressed while reduce loading speed, the product of loading speed and pressure is remained for definite value 15W, until rock sample is complete
Full destruction, monitors and records pressure, pressure head speed and displacement, the sound emission of the rock sample letter of direct shear test machine in the process
Number（Impact rate, accumulation impact rate, specific energy, cumlative energy rate,bValue）, Fig. 2 ~ 7 each provide the sound emission letter of rock sample
Number to the curve of time；
Step 5：The acoustic emission signal data of pressure, shift assays result and rock sample according to testing machine, analyze binode
Failure law of the structure face granite sample under the conditions of firm power shearing experiment.
Test result indicate that, under the conditions of firm power loading experiment, the shear rate of granite sample constantly declines, and cuts
Shearing stress gradually increases but advances the speed and constantly slows down（As shown in Figure 2）.Meanwhile, the variation characteristic of acoustic emission signal shows（Such as
Shown in Fig. 3 ~ 7）, under firm power loading environment, the Changing Pattern of rock sample acoustic emission signal with constant rate of speed or perseverance
Experimental result under constant-pressure gradient loading environment has obvious difference, and sound emission impact rate is not with shear stress
Raising and continue to increase（As shown in Figure 3 and Figure 5）, in initial constant rate of speed load phase, rock sample stress increases fast,
Sound emission impact rate is also higher, is subsequently converted to firm power loading mode, and a certain degree of decline occurs in sound emission impact rate,
But the later stage is with the increase of loading compression, sound emission impact rate returns to high level again until rock sample destruction；Energy is released
Put moment of the almost all generation in the rock failure mechanism of rock（As shown in Figure 4 and Figure 6）, the sound emission in rock sample loading procedurebValue
It is lasting to reduce, and before destruction occurs between 1 ~ 1.5（As shown in Figure 7）, this is rock mass engineering project surrounding rock's elastic modulus
The research of pattern provides important references.
Embodiment 2
A kind of sandstone uniaxial compression experimental technique of firm power loading, comprises the following steps：
Step one：Add in the 300kN single shafts for being provided with constant rate of speed Loading Control module and constant pressure gradient Loading Control module
Carry testing machine（Structural representation is as shown in Figure 8）Upper increase firm power Loading Control module, for controlling to be tried in the unit interval
The product of the loading speed and pressure of testing compressing head is definite value；
Step 2：Sandstone sample is placed on uniaxial loading testing machine, sandstone specimen size is 50mm × 50mm × 100mm
（Length × width × height）, 4 acoustic emission monitor(ing)s are popped one's head in and is arranged on sandstone specimen surface, each two up and down, as shown in Figure 8；
Step 3：In the vertical direction, pressure is gradually applied to sandstone sample according to the constant pressure gradient of 0.05mm/s；
Step 4：Treat that sandstone sample stress reaches the stand under load power of setting value 10kN, i.e. sandstone and reaches 0.5W, by the constant speed
Rate Loading Control pattern switching is firm power Loading Control pattern, continues to increase reduction while applying rock sample pressure
Loading speed, remains that loading speed is definite value 0.5W with the product of pressure, until rock sample is destroyed completely, in this process
Middle monitoring simultaneously records the pressure of testing machine, pressure head speed and displacement, the acoustic emission signal of rock sample（Impact rate, accumulation are clashed into
Rate, specific energy, cumlative energy rate,bValue）, Fig. 9 ~ 14 each provide the curve of the acoustic emission signal to the time of rock sample；
Step 5：The acoustic emission signal data of pressure experiment result and rock sample according to testing machine, analyze sandstone sample
Failure law under firm power uniaxial loading experiment condition.
Test result indicate that, under the conditions of firm power loading experiment, under rate of deformation after sandstone sample stand under load is continuous
Drop, compression gradually increases but advances the speed and constantly slows down（As shown in Figure 9）.Meanwhile, the variation characteristic of acoustic emission signal shows
（As shown in Figure 10 ~ 14）, under firm power loading environment, the Changing Pattern of rock sample acoustic emission signal with constant rate of speed
Or the experimental result under constant pressure gradient loading environment has obvious difference, sound emission impact rate is not with stress
Raising and continue to increase（As shown in fig. 10 and fig. 12）, initial constant rate load phase, rock stress increases fast, sound emission
Impact rate is high, is subsequently converted to firm power loading mode, and a certain degree of decline occurs in sound emission impact rate, but the later stage with
The increase of compression is loaded, sound emission impact rate returns to high level again until rock sample destruction；Energy discharges almost all
There is the moment in the rock failure mechanism of rock（As illustrated in figures 11 and 13）, the sound emission in rock sample loading procedurebValue is lasting to be reduced,
And before destruction occurs between 1 ~ 1.5（As shown in figure 14）, this grinds for rock mass engineering project surrounding rock's elastic modulus pattern
Study carefully there is provided important references.
Embodiment 3
A kind of griotte Brazil spilt test method of firm power loading, comprises the following steps：
Step one：Add in the 300kN single shafts for being provided with constant rate of speed Loading Control module and constant pressure gradient Loading Control module
Carry testing machine（Structural representation is as shown in figure 15）Upper increase firm power Loading Control module, for controlling to be tried in the unit interval
The product of the loading speed and pressure of testing compressing head is definite value；
Step 2：Griotte disk sample is placed on uniaxial loading testing machine, griotte disk specimen finish 80mm, thickness
48mm, 4 acoustic emission monitor(ing)s is popped one's head in and is arranged on griotte specimen surface, front and rear each two, as shown in figure 15；
Step 3：In the vertical direction, pressure is gradually applied to griotte sample according to the constant pressure gradient of 0.015mm/s；
Step 4：Treat that griotte sample stress reaches the stand under load power of setting value 40kN, i.e. griotte and reaches 0.6W, by the perseverance
Constant speed rate Loading Control pattern switching is firm power Loading Control pattern, continues to increase and applies stressed same to griotte sample
When reduce loading speed, remain the product of loading speed and pressure for definite value 0.6W, until griotte sample is destroyed completely,
Pressure, pressure head speed and displacement, the acoustic emission signal of rock sample of testing machine are monitored and recorded in the process（Impact rate,
Accumulation impact rate, specific energy, cumlative energy rate,bValue）, Figure 16 ~ 21 each provide the acoustic emission signal of rock sample to the time
Curve；
Step 5：The acoustic emission signal data of pressure experiment result and rock sample according to testing machine, analysis griotte examination
Failure law of the sample under firm power uniaxial loading experiment condition.
Test result indicate that, under the conditions of firm power loading experiment, the rate of deformation after griotte sample stand under load is continuous
Decline, compression gradually increases but advances the speed and constantly slows down（As shown in figure 16）.Meanwhile, the variation characteristic table of acoustic emission signal
It is bright（As shown in Figure 17 ~ 21）, under firm power loading environment, the Changing Pattern of rock sample acoustic emission signal with constant speed
Experimental result under rate or constant pressure gradient loading environment has an obvious difference, and sound emission impact rate is not with should
The raising of power and continue to increase（As shown in Figure 17 and Figure 19）, initial constant rate load phase, the increase of rock stress soon, send out by sound
Penetrate impact rate high, be subsequently converted to firm power loading mode, a certain degree of decline occurs in sound emission impact rate, but the later stage with
The increase of loading compression, sound emission impact rate returns to high level again until rock sample destruction；Energy release is almost complete
There is the moment in the rock failure mechanism of rock in portion（As shown in Figure 18 and Figure 20）, the sound emission in rock sample loading procedurebThe lasting drop of value
It is low, and before destruction occurs between 1 ~ 1.5（As shown in figure 21）, this is rock mass engineering project surrounding rock's elastic modulus pattern
Research provides important references.
Claims (6)
1. a kind of Rock Mechanics Test method that firm power is loaded, it is characterised in that comprise the following steps：
Step one：Increase being provided with the testing machine of constant rate of speed Loading Control module and constant pressure gradient Loading Control module
Firm power Loading Control module, is fixed for controlling the loading speed of pressure head of testing machine and the product of pressure in the unit interval
Value；
Step 2：Rock sample is placed on testing machine, and acoustic emission monitor(ing) probe is arranged on rock sample surface；
Step 3：Pressure is applied to the rock sample under constant rate of speed Loading Control pattern, loading speed is remainedV；
Step 4：Treat that rock sample stress reaches setting valueF, now, the stand under load power of rock sample reachesP,P=F×V, by institute
Constant rate of speed Loading Control pattern switching is stated for firm power Loading Control pattern, in the pressure that testing machine applies to rock sample
Loading speed is constantly reduced while increase, but remains that loading speed is definite value with the product of pressureP, until rock sample
Destroy completely, monitor and record pressure and displacement of pressing head, the acoustic emission signal of rock sample of testing machine in the process；
Step 5：The acoustic emission signal data of pressure, shift assays result and rock sample according to testing machine, analyze rock
The failure law of sample.
2. the Rock Mechanics Test method that a kind of firm power according to claim 1 is loaded, it is characterised in that described to add
Carry speedVMeet：0.00001<V<2, mm/s.
3. the Rock Mechanics Test method that a kind of firm power according to claim 1 is loaded, it is characterised in that described to treat
Rock sample stress reaches setting valueF,FSpan be 0.1<F<300, kN.
4. the Rock Mechanics Test method that a kind of firm power according to claim 1 is loaded, it is characterised in that described to add
It is definite value that speed is carried with the product of pressureP,PSpan be 0.000001<P<600, W.
5. the Rock Mechanics Test method that a kind of firm power according to claim 1 is loaded, it is characterised in that the sound
Transmission signal include impact rate, accumulation impact rate, specific energy, cumlative energy rate,bValue.
6. the Rock Mechanics Test method that a kind of firm power according to claim 1 is loaded, it is characterised in that the examination
Testing machine includes uniaxial loading testing machine, Biaxial stress testing machine and three axle loading testers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129414.XA CN106769393B (en) | 2016-12-09 | 2016-12-09 | A kind of Rock Mechanics Test method of firm power load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129414.XA CN106769393B (en) | 2016-12-09 | 2016-12-09 | A kind of Rock Mechanics Test method of firm power load |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106769393A true CN106769393A (en) | 2017-05-31 |
| CN106769393B CN106769393B (en) | 2019-06-25 |
Family
ID=58874941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611129414.XA Active CN106769393B (en) | 2016-12-09 | 2016-12-09 | A kind of Rock Mechanics Test method of firm power load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106769393B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283047A (en) * | 2018-11-29 | 2019-01-29 | 四川大学 | Rock Damage monitoring system and evaluation method under a kind of depth ground engineering-environment |
| CN113588412A (en) * | 2021-07-28 | 2021-11-02 | 东北大学 | Surrounding rock stability test fixture and test method |
| CN113776943A (en) * | 2021-11-05 | 2021-12-10 | 中国矿业大学(北京) | Rock compressive strength prediction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001174377A (en) * | 1999-12-20 | 2001-06-29 | Saginomiya Seisakusho Inc | Control method for material testing device and the material testing device |
| CN102928512A (en) * | 2012-11-05 | 2013-02-13 | 中国科学院武汉岩土力学研究所 | Test method of rock aging deterioration process |
| CN103335894A (en) * | 2013-06-17 | 2013-10-02 | 哈尔滨工业大学 | Titanium alloy stress relaxation test device and method based on V-type hot bending |
| CN103471932A (en) * | 2013-09-26 | 2013-12-25 | 北京机电研究所 | Metal material stress-strain curve measuring method and metal material stress-strain curve use method |
| KR20140021377A (en) * | 2012-08-10 | 2014-02-20 | 한국지질자원연구원 | Apparatus for accelerated weathering test of rocks |
| CN104792609A (en) * | 2015-04-29 | 2015-07-22 | 中国矿业大学 | Lateral restraint system for compression test of platy rock sample and test method thereof |
| CN105403623A (en) * | 2015-11-04 | 2016-03-16 | 华北理工大学 | Extraction method for sound emission main frequency of rock under single-axis compression condition |
-
2016
- 2016-12-09 CN CN201611129414.XA patent/CN106769393B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001174377A (en) * | 1999-12-20 | 2001-06-29 | Saginomiya Seisakusho Inc | Control method for material testing device and the material testing device |
| KR20140021377A (en) * | 2012-08-10 | 2014-02-20 | 한국지질자원연구원 | Apparatus for accelerated weathering test of rocks |
| CN102928512A (en) * | 2012-11-05 | 2013-02-13 | 中国科学院武汉岩土力学研究所 | Test method of rock aging deterioration process |
| CN103335894A (en) * | 2013-06-17 | 2013-10-02 | 哈尔滨工业大学 | Titanium alloy stress relaxation test device and method based on V-type hot bending |
| CN103471932A (en) * | 2013-09-26 | 2013-12-25 | 北京机电研究所 | Metal material stress-strain curve measuring method and metal material stress-strain curve use method |
| CN104792609A (en) * | 2015-04-29 | 2015-07-22 | 中国矿业大学 | Lateral restraint system for compression test of platy rock sample and test method thereof |
| CN105403623A (en) * | 2015-11-04 | 2016-03-16 | 华北理工大学 | Extraction method for sound emission main frequency of rock under single-axis compression condition |
Non-Patent Citations (3)
| Title |
|---|
| 尹小涛等: "加载速率对岩石材料力学行为的影响", 《岩石力学与工程学报》 * |
| 谭晓晶等: "采用力控制加载的拟动力试验等效力控制方法", 《振动工程学报》 * |
| 邱法维等: "结构拟静力加载实验方法及控制", 《土木工程学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109283047A (en) * | 2018-11-29 | 2019-01-29 | 四川大学 | Rock Damage monitoring system and evaluation method under a kind of depth ground engineering-environment |
| CN109283047B (en) * | 2018-11-29 | 2023-10-20 | 四川大学 | Rock mass damage monitoring system and evaluation method in deep engineering environment |
| CN113588412A (en) * | 2021-07-28 | 2021-11-02 | 东北大学 | Surrounding rock stability test fixture and test method |
| CN113776943A (en) * | 2021-11-05 | 2021-12-10 | 中国矿业大学(北京) | Rock compressive strength prediction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106769393B (en) | 2019-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhou et al. | Fracture evolution and failure behaviour of marble specimens containing rectangular cavities under uniaxial loading | |
| US11913915B2 (en) | Uniaxial bidirectional synchronous control electromagnetic loaded dynamic shear test system and method | |
| Niu et al. | Experimental study on crack coalescence behavior of double unparallel fissure-contained sandstone specimens subjected to freeze-thaw cycles under uniaxial compression | |
| Zhao et al. | Energy evolution of brittle granite under different loading rates | |
| Liu et al. | Effects of cyclic dynamic loading on the mechanical properties of intact rock samples under confining pressure conditions | |
| Xu et al. | Experimental and numerical studies on compression-shear behaviors of brittle rocks subjected to combined static-dynamic loading | |
| Tronvoll et al. | Sand production: mechanical failure or hydrodynamic erosion? | |
| CN106769393A (en) | A kind of Rock Mechanics Test method of firm power loading | |
| You et al. | Experimental and numerical investigation on the mechanical responses and cracking mechanism of 3D confined single-flawed rocks under dynamic loading | |
| Ying et al. | The characteristics of dynamic fracture toughness and energy release rate of rock under impact | |
| Xie et al. | Experimental study on dynamic mechanical and failure behavior of a jointed rock mass | |
| Zhang et al. | Crack development and damage patterns under combined dynamic-static loading of parallel double fractured rocks based on DIC technique | |
| Hou et al. | Post-peak stress–strain curves of brittle rocks under axial-and lateral-strain-controlled loadings | |
| Liu et al. | Experimental study on failure characteristics of single-sided unloading rock under different intermediate principal stress conditions | |
| Zhang et al. | Study on dynamic splitting tensile damage characteristics of basalt fiber reinforced concrete based on AE and DSCM | |
| Lu et al. | Fatigue performance of stud shear connectors in steel-concrete composite beam with initial damage | |
| Li et al. | An experimental investigation on fatigue characteristics of granite under repeated dynamic tensions | |
| Gong et al. | Fracture behavior and acoustic emission characteristics of reinforced concrete under mixed mode I-II load conditions | |
| Mughieda et al. | Coalescence of offset rock joints under biaxial loading | |
| Li et al. | Fracture evolution and failure behavior around an opening in brittle jointed rocks subjected to uniaxial compression | |
| Guo et al. | Experimental study on the influence of loading rate on the directional propagation law of rock mode-I cracks | |
| Zhao et al. | Regional characteristics of deformation and failure of coal and rock under local loading | |
| Singh et al. | Constitutive behaviour of crushed ice | |
| Gan et al. | Experimental investigation of the dynamic mechanical properties of concrete under different strain rates and cyclic loading | |
| Boroojerdi et al. | Experimental investigation of rate dependency of freeze bond strength |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201021 Address after: No.2, no.966, Maoshan Road, Huangdao street, Huangdao District, Qingdao City, Shandong Province Patentee after: Qingdao qiankunxing Intelligent Technology Co.,Ltd. Address before: 110819 Heping Road, Heping District, Liaoning, Shenyang, Lane No. 11, No. 3 Patentee before: Northeastern University |