CN110411871A - For studying the experimental system and method for the country rock Explosive stress wave mechanism of action - Google Patents
For studying the experimental system and method for the country rock Explosive stress wave mechanism of action Download PDFInfo
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- CN110411871A CN110411871A CN201910852654.XA CN201910852654A CN110411871A CN 110411871 A CN110411871 A CN 110411871A CN 201910852654 A CN201910852654 A CN 201910852654A CN 110411871 A CN110411871 A CN 110411871A
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- 239000002360 explosive Substances 0.000 title claims abstract description 59
- 239000011435 rock Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000010534 mechanism of action Effects 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 40
- 230000008859 change Effects 0.000 claims abstract description 8
- 239000011888 foil Substances 0.000 claims description 26
- 238000005422 blasting Methods 0.000 claims description 16
- 230000013011 mating Effects 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 15
- 238000002474 experimental method Methods 0.000 claims description 13
- 238000005474 detonation Methods 0.000 claims description 10
- 239000000523 sample Substances 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000004880 explosion Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 230000000977 initiatory effect Effects 0.000 abstract description 6
- 239000003814 drug Substances 0.000 abstract description 5
- 238000011160 research Methods 0.000 abstract description 5
- 230000002250 progressing effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 43
- 208000037656 Respiratory Sounds Diseases 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 239000010727 cylinder oil Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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
- G01N3/02—Details
-
- 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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/313—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by explosives
-
- 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
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
- G01N2203/0066—Propagation of crack
-
- 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
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- 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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of for studying the experimental system and method for the country rock Explosive stress wave mechanism of action, the system can change the conditions such as surrouding rock stress, pack quantity, pack position, explosive payload, medicine bore dia, by reading the strain data of blasthole surrounding rock body in explosion instantaneous process, to analyze Explosive stress wave to the mechanism of action, crack initiation speed and crack progressing situation of rock mass.System for studying the rock mass Explosive stress wave mechanism of action under confining pressure of the invention, can study that function and effect when Explosive stress wave generates to the mechanism of action, Explosive stress wave of test specimen in specimen crack crack initiation, Explosive stress wave is overlapped mutually the effect and rule of effect under varying strength confining pressure, and on this basis to theory of dynamic fracture mechanics and theory of stress wave carry out deeper into research.
Description
Technical field
The invention belongs to experimental fracture mechanics research fields, and in particular to one kind is made for confining pressure rock mass in Explosive stress wave
The experimental system and method for fracture mechanism under.
Background technique
China's coal-mine exploitation at present, tunnel excavation are mainly exploited in the form of explosion, coal petrography tunnel surrouding rock stress, rock
The hardness of stone becomes the principal element for restricting tunnelling.In the past few years, domestic blasting technique obtains widely more widely answering
With blasting from is also more abundant, and drill eye blasting, photoface exploision, directional fracture control blasting technology are in opencut and deep mine
Well, road construction, tunnel and vertical have a wide range of applications in excavating.But at present under confining pressure blasting rock-broken detailed process
Not yet understand fully completely.It is generally believed that initially have certain natural fractures in rock mass, in the transmittance process that stress wave is answered in explosion,
Explosion gas penetrates into crack and under confining pressure effect, further expands crackle caused by stress wave.Country rock explosion is relative to dew
It is a more complicated process for its explosion, the unstability that confining pressure acts on after the instantaneity and explosion of explosion can all make
It obtains blasting result to become difficult to control, this brings great difficulty to the experimental study of blasting rock-broken mechanism.
With being continuously increased for nowadays coal mining depth, science and technology is also constantly progressive, and required blasting technique also needs
More mature, researcher is by advanced experimental facilities such as high-speed camera etc. to each caused by explosion moment rock mass
Kind of phenomenon such as strains, stress, rupture observation, certain achievement is achieved to the research of the explosion failure mechanism of rock, it is right
Practical engineering application has certain guidance meaning and practical value.But there is many cracks and rocks for the inside of natural rock mass
The uneven characteristic of body, simultaneously because the presence of surrouding rock stress, the crackle of confining pressure rock mass is risen after necessarily causing part blasthole to be detonated
It splits to the path of perforation and is difficult to control, however at present relatively about the experiment and research of confining pressure rock mass Explosive stress wave effect
It is few.Therefore, it is necessary to confining pressure rock mass Explosive stress wave effect process and mechanism, stress wave to moving crack propagation law
The problems such as influence, is studied.This is for Blasting Parameters Optimization, improvement blasting technology and the development of theory of dynamic fracture mechanics etc.
All there is important theoretical and practical significance.
It devises one kind in conjunction with modern electric measurement technique of strain gage based on the deficiency and defect of existing country rock blasting technique and encloses
The experimental system and method for the rock mass Explosive stress wave mechanism of action are pressed, this development to engineering practice and theory of dynamic fracture mechanics
Deng all with important theoretical and practical significance.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of for studying the experiment of the country rock Explosive stress wave mechanism of action
System and method, the system can change the conditions such as surrouding rock stress, pack quantity, pack position, explosive payload, medicine bore dia, lead to
The strain data for reading blasthole surrounding rock body in explosion instantaneous process is crossed, to analyze Explosive stress wave to the effect machine of rock mass
Reason, crack initiation speed and crack progressing situation.
The present invention provides a kind of experimental system for studying the country rock Explosive stress wave mechanism of action, especially by following technical side
What case was realized:
The experimental system includes that multichannel pulse igniter, confining pressure loading device, confining pressure driving device, confining pressure manipulation are flat
Platform, data collecting instrument, high dynamic strain indicator, bridge box, signal wire, shielding line, foil gauge, data processing centre, test specimen；Use signal
Foil gauge on line line connecting bridge box and test specimen with signal wire connecting bridge box and surpasses dynamic with shielding line connecting bridge box and ground
Deformeter connects high dynamic strain indicator and data collecting instrument with signal wire, is connected at high dynamic strain indicator and data with signal wire
Reason center；With detonation probe connecting multi-channel pulse igniter and pack.
The experimental system Data processing installs in the heart the mating test program of high dynamic strain indicator；By data processing centre
The triggering mode of the mating test program of the high dynamic strain indicator of middle installation is set as rising edge；It is arranged in mating test program every
Parameter；Mating test program parameter include input foil gauge number, each foil gauge and crack propagation path vertical range y,
Transverse wave speed c1 in test specimen, longitudinal wave velocity c2 in test specimen, the modulus of shearing μ of test specimen, foil gauge are towards angle α, moving crack type
Etc. parameters；
The experimental system triggers the detonation probe primer at test specimen center using multichannel pulse igniter, by fried
Medicine explosion generates Explosive stress wave and acts on test specimen；Explode the nearest foil gauge of the stress wave triggering pack instantaneously generated, simultaneously
Or first backward data collecting instrument issues trigger signal, it is mating that trigger signal is transferred to data processing centre's triggering high dynamic strain indicator
Test program starts acquisition strain sheet data；
The experimental system, the mating test program of high dynamic strain indicator calculates automatically according to foil gauge electrical measurement result to be split
The mechanics parameters such as line expansion rate；In experimentation, each foil gauge can acquire strain peak value and generate strain peak value when
Between；
The experimental system, the position of explosive pack and explosive payload can change, and then change the strong of Explosive stress wave
Superposition situation between degree and different stress waves.
The experimental system, confining pressure loading device set required confining pressure before pack ignition, pass through confining pressure
Report control platform controls confining pressure driving device.
The experimental system, confining pressure loading device include the first oil cylinder and the second oil cylinder, control the direction x, the direction y respectively
Pressure value；Each load cylinder is connected by oil inlet pipe and oil return pipe with confining pressure driving device, and confining pressure driving device is by enclosing
Press the variation of report control platform control pressure value.
According to the method for the rock Explosive stress wave mechanism of action under the confining pressure of any system research, including following step
It is rapid:
Firstly, at the signal wire connection foil gauge of respective numbers, bridge box, data collecting instrument, high dynamic strain indicator, data
Reason center, and signal wire is connected in the corresponding discharge channel of multichannel pulse igniter；Then, it is needed according to experiment in explosive medicine
It is packed into a certain amount of explosive in packet, and is made into detonation probe with enameled wire, probe tip is inserted into explosive, end passes through pack
The circular hole of sealing cover, then covers sealing cover, to ensure in probe tip insertion explosive, then the explosive pack that powder charge is finished
It is put into test specimen blasthole；Later, test specimen vertically and laterally pressurize by confining pressure report control platform；Finally, by multi-pass autolyte
The signal wire for rushing igniter discharge channel is connect with detonation probe end, ignition charge.
System for studying the rock mass Explosive stress wave mechanism of action under confining pressure of the invention, can study Explosive stress wave
It is quick-fried under function and effect, varying strength confining pressure when generation to the mechanism of action of test specimen, Explosive stress wave in specimen crack crack initiation
Fried stress wave is overlapped mutually function and effect and rule, and carries out more to theory of dynamic fracture mechanics and theory of stress wave on this basis
In-depth study.System utilizes multichannel pulse igniter ignition charge, easy to operate, high reliablity.After pack detonation, explosion
Load and external confining pressure load act on test specimen simultaneously, and Explosive stress wave starts to propagate, however test specimen will be after several microseconds
It just can crack initiation.And the spread speed of Explosive stress wave is generally up to 2000m/s or so, and the expansion rate maximum of quick-fried raw crackle is only
For 300m/s~500m/s or so.Therefore test specimen is completed by after Blast Loads to the time before quick-fried raw crackle crack initiation enough
Triggering to high dynamic strain indicator to there is sufficient observation, but must be strictly controlled the time of pack detonation, make in testing
They can detonate simultaneously according to requirement of experiment or successively detonate in extremely short test specimen.
Compared with prior art, the present invention has the following advantages and beneficial effects:
(1) it can be realized and real-time monitoring carried out to the test specimen that Explosive stress wave acts on by electrical measuring method；(2) by changing medicine
The position of the size of amount, blasthole, can change the intensity of Explosive stress wave；(3) by changing confining pressure size, explosion can be changed
The rate of stress wave propagation and different propagation conditions；(4) according to experiment needs, multiple and different angles can be pasted on test specimen
Foil gauge acquires multiple groups electrical measurement data, and simultaneity factor automatically begins to acquisition data after passing through igniting blasting explosive, to reduce reality
Test error；(5) confining pressure system and blasting system belong to two relatively independent systems in experiment, and being independent of each other in experimentation can
It is individually operated, therefore ensure that the stability of experiment.This experimental system has been carried out relevant experiment, has obtained preferable experiment
As a result.
With reference to the accompanying drawing to of the invention for studying the experimental system and method for the country rock Explosive stress wave mechanism of action
It is described further.
Detailed description of the invention
Fig. 1 is the structure principle chart of present system；
Fig. 2 is confining pressure drive system detail view in Fig. 1；
Fig. 3 is Fig. 2 confining pressure report control platform detail view；
Fig. 4 is that electrical measurement calculates module flow diagram；
Description of symbols:
1, test specimen, 2, data processing centre, 3, confining pressure drive system, 4, data collecting instrument, 5, high dynamic strain indicator, 6, more
Channel pulse igniter, 7, pulse igniter charger；8, confining pressure load bracket, 9 first oil cylinders, the 10, second oil cylinder, 11,
Face, 12, bearing plate, 13, foil gauge, 14, enameled wire, 15, shielding line, 16, blasthole, the 17, first oil inlet pipe, the 18, first oil return
Pipe, the 19, second oil inlet pipe, the 20, second oil return pipe, 21, bridge box,.
31, drive motor, 32, fuel tank, 33, master control oil valve, the 34, first oil cylinder controller, the 35, first oil cylinder valve, 36,
Second oil cylinder valve, the 37, second oil cylinder controller, 38, pressure gauge, 39, confining pressure report control platform, 301, signal transmission belt, 302,
Electrical transmission line.
391, the first cylinder oil display, the 392, second cylinder oil display, 393, load controller
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.Specific embodiment described herein
It is merely to illustrate and explain the present invention, is not intended to restrict the invention.
As shown in Figure 1, Figure 2, Figure 3 shows, the present invention is used to study experimental system and the side of the country rock Explosive stress wave mechanism of action
Method, specifically, including multichannel pulse igniter 6, confining pressure loading device 8,9,10, confining pressure driving device 3, confining pressure report control platform
39, data collecting instrument 4, high dynamic strain indicator 5, bridge box 21, signal wire, shielding line 15, foil gauge 13, data processing centre 2, examination
Part 1；Signal is used with 15 connecting bridge box 21 of shielding line and ground 11 with the foil gauge on signal wire line connecting bridge box 21 and test specimen
Line connecting bridge box 21 and high dynamic strain indicator 5 connect high dynamic strain indicator 5 and data collecting instrument 4 with signal wire, are connected with signal wire
Connect high dynamic strain indicator 5 and data processing centre 2；With the pack in 14 connecting multi-channel pulse igniter 6 of enameled wire and blasthole
16；First oil cylinder 9 is connected by the first oil inlet pipe 17 and the first oil return pipe 18 with the first oil cylinder controller 34, and the second oil cylinder 10 is logical
It crosses the first oil inlet pipe 19 and the first oil return pipe 20 is connected with the 2nd oil cylinder controller 37, confining pressure report control platform 39 passes through load control
Device controls the pressure size of the first oil cylinder, the second oil cylinder, observes real-time pressure value by display 391,392.
In conjunction with Fig. 1, the mating test program of high dynamic strain indicator 5 is installed in the experimental system data processing centre 2；It will count
Rising edge is set as according to the triggering mode for the mating test program of high dynamic strain indicator installed in processing center 1；In mating test
Parameters are arranged in program；Mating test program parameter includes number, each foil gauge and the crack propagation for inputting foil gauge 13
Transverse wave speed c1 in the vertical range y in path, test specimen, longitudinal wave velocity c2, the modulus of shearing μ of test specimen, foil gauge direction in test specimen
The parameters such as angle α, moving crack type.
In conjunction with Fig. 1, the experimental system triggers the detonation in test specimen center blasthole 16 using multichannel pulse igniter 6 and visits
Needle primer generates Explosive stress wave by explosive charge and acts on test specimen 1；Explode the stress wave triggering pack instantaneously generated
Nearest foil gauge 13, while or first the backward sending of data collecting instrument 4 trigger signal, trigger signal are transferred to data processing centre
The 1 triggering mating test program of high dynamic strain indicator starts acquisition strain sheet data
In conjunction with Fig. 1, Fig. 2, the experimental system, confining pressure loading device 8,9,10, confining pressure driving device 3, confining pressure manipulation
Platform 39 can be considered parallel independent system, and loading procedure is not influenced by blasting process；First oil cylinder 9 is manipulated by confining pressure
Platform 39 carries out the pressurization of the direction x, and 391 real-time display oil pressure data of the first oil pressure display pass through the first oil inlet pipe 17 when pressurization
Oil supply is unloaded after the completion of load by 18 oil return of the first oil return pipe, and the second oil cylinder 10 carries out the direction y by confining pressure report control platform 39
Pressurization, 392 real-time display oil pressure data of the second oil pressure display, by 19 oil supply of the second oil inlet pipe when pressurization, after the completion of load
It is unloaded by 20 oil return of the second oil return pipe, requires to close first the 35, second oil of oil cylinder valve after the completion of the load of two oil cylinders, unloading
Cylinder valve door 36 closes master control oil valve door 33 after the completion of experiment.
According to Fig. 1, Fig. 4, the experimental system, the mating test program of high dynamic strain indicator is according to foil gauge electrical measurement result
Automatically the mechanics parameters such as crack propagation velocity are calculated；In experimentation, each foil gauge can acquire strain peak value and generation
Strain the time of peak value；
The experimental system, the position of explosive pack and explosive payload can change, and then change the strong of Explosive stress wave
Under degree and different confining pressures the case where stress wave transmitting variation.
The experimental system, confining pressure makees loading device and sets required confining pressure before pack ignition, by enclosing
Report control platform is pressed to control confining pressure driving device.
The experimental system can carry out test specimen 1 by confining pressure report control platform 39 loading different confining pressures, to probe into difference
The spread scenarios of quick-fried raw crackle under the conditions of confining pressure.
The experimental system for being used to study the country rock Explosive stress wave mechanism of action of the invention, concrete operation method is:
Firstly, the test specimen processed is mounted on the fixation position on confining pressure load bracket 8, pass through confining pressure report control platform control
Confining pressure driving device processed carries out load confining pressure to test specimen, places explosive, detonation probe at test specimen blasthole center.
Then, paste foil gauge in the test specimen blasthole center direction x, y, by signal wire by foil gauge and bridge box, bridge box with
Data collecting instrument, data collecting instrument are connected with high dynamic strain indicator, high dynamic strain indicator with data processing centre, are arranged at data
The triggering mode of the mating processing routine of the high dynamic strain indicator at reason center is rising edge.
Finally, connecting the spy in blasthole after the signal wire of multichannel pulse igniter discharge channel is connected with enameled wire
Needle, after the charging of multichannel pulse igniter, ignition charge.
The multichannel pulse igniter can ignite multiple packs simultaneously.
The strain gauge adhesion position can be changed according to the needs of observation data, and different angle, different number are all
It can be adjusted.
The high dynamic strain indicator contains multiple data acquisition channels, can acquire the real time data of multiple measuring points simultaneously.
The mating program of the high dynamic strain indicator of the data processing centre, triggering mode are rising edge, i.e. explosion is answered
Existing first rise of its strain wave declines afterwards when Reeb is transmitted to first foil gauge, and the instantaneous process of rising triggers high dynamic strain indicator
Start to acquire data.
In conjunction with attached drawing, only preferred embodiments of the present invention will be described above, not limits the scope of the present invention
Fixed, without departing from the spirit of the design of the present invention, those skilled in the art carry out the technical solution of invention a variety of simple
Deformation, should all fall into claims of the present invention determine protection scope.
Claims (8)
1. the present invention is a kind of for studying the experimental system and method for the country rock Explosive stress wave mechanism of action, it is characterised in that: packet
Multichannel pulse igniter, confining pressure loading device, confining pressure driving device, confining pressure report control platform, data collecting instrument, super dynamic is included to answer
Become instrument, bridge box, signal wire, shielding line, foil gauge, data processing centre, test specimen；The test specimen is placed and confining pressure loading device
It is interior, it is drilled with blasthole on test specimen, places segment algorithm；With foil gauge, the ultra dynamic strain on signal wire line connecting bridge box and test specimen
Instrument, data collecting instrument, data processing centre；With detonation probe connecting multi-channel pulse igniter and pack.
2. it is according to claim 1 for studying the experimental system and method for the country rock Explosive stress wave mechanism of action, it is special
Sign is: the experimental system is passed through using the detonation probe primer at multichannel pulse igniter triggering test specimen center
Explosive charge generates Explosive stress wave and acts on test specimen；Explode the nearest foil gauge of the stress wave triggering pack instantaneously generated, together
When or first backward high dynamic strain indicator issues trigger signal, trigger signal is transferred to data processing centre's triggering high dynamic strain indicator
Mating test program starts acquisition strain sheet data.
3. it is according to claim 1 for studying the experimental system and method for the country rock Explosive stress wave mechanism of action, it is special
Sign is: the experimental system, and the position of explosive pack and explosive payload can change, and then changes the intensity of Explosive stress wave
With the case where stress wave transmitting changes under different confining pressures.
4. it is according to claim 1 for studying the experimental system and method for the country rock Explosive stress wave mechanism of action, it is special
Sign is: the experimental system, and confining pressure loading device sets required confining pressure before pack ignition.
5. it is according to claim 1 for studying the experimental system and method for the country rock Explosive stress wave mechanism of action, it is special
Sign is: the experimental system, and confining pressure loading device includes the first oil cylinder and the second oil cylinder, controls the direction x, the direction y respectively
Pressure value；Each load cylinder is connected by oil inlet pipe and oil return pipe with confining pressure driving device, and confining pressure driving device is by enclosing
Press the variation of report control platform control pressure value.
6. according to claim 1 for studying the experimental system and method for the country rock Explosive stress wave mechanism of action described in -5,
Be characterized in that: the experimental system, which can be realized, carries out real-time monitoring to the test specimen that Explosive stress wave acts on by electrical measuring method.
7. according to claim 1 for studying the experimental system and method for the country rock Explosive stress wave mechanism of action described in -6,
It is characterized in that: according to experiment needs, the foil gauge of multiple and different angles can be pasted on test specimen, acquires multiple groups electrical measurement data, together
When system by starting simultaneously at acquisition data automatically after igniting blasting explosive, to reduce experimental error.
8. according to claim 1 for studying the experimental system and method for the country rock Explosive stress wave mechanism of action described in -7,
Be characterized in that: confining pressure system and blasting system belong to two relatively independent systems in experiment, and being independent of each other in experimentation can
It is individually operated, therefore ensure that the stability of experiment.
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| CN201910852654.XA CN110411871A (en) | 2019-09-10 | 2019-09-10 | For studying the experimental system and method for the country rock Explosive stress wave mechanism of action |
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| CN201910852654.XA CN110411871A (en) | 2019-09-10 | 2019-09-10 | For studying the experimental system and method for the country rock Explosive stress wave mechanism of action |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111504747A (en) * | 2020-05-06 | 2020-08-07 | 安徽理工大学 | Single-face annular joint-cutting energy-gathering explosive column, and indoor test and application |
| CN111753361A (en) * | 2020-06-29 | 2020-10-09 | 中国人民解放军空军工程大学 | Method for calculating surrounding rock dynamic stability composite criterion under action of explosive load |
| CN113091546A (en) * | 2021-04-23 | 2021-07-09 | 安徽理工大学 | Device for monitoring whether explosive in blast hole is completely detonated |
| CN114005347A (en) * | 2021-11-03 | 2022-02-01 | 天津大学 | Experimental device and method for researching earthquake dynamic triggering |
| CN114216784A (en) * | 2021-12-13 | 2022-03-22 | 河北工程大学 | Uniform confining pressure loading method for large-scale circular test piece under dynamic explosive load |
| CN114324468A (en) * | 2021-12-29 | 2022-04-12 | 中国矿业大学(北京) | Explosion experimental device and one-dimensional explosion stress experimental method |
| CN114544706A (en) * | 2022-01-18 | 2022-05-27 | 中国矿业大学(北京) | Experimental system and method for measuring explosive product energy distribution proportion relation |
| US20220244155A1 (en) * | 2020-11-10 | 2022-08-04 | Anhui University of Science and Technology | System and method of monitoring vibration of a blasting model test for a jointed rock mass |
| CN115615852A (en) * | 2022-12-16 | 2023-01-17 | 昆明理工大学 | Device for measuring expansion stress of blasting crack of cyclic load lower model |
| CN116183668A (en) * | 2022-12-28 | 2023-05-30 | 中国矿业大学 | System and method for testing super-dynamic blasting parameters under confining pressure condition |
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| CN111753361B (en) * | 2020-06-29 | 2024-03-26 | 中国人民解放军空军工程大学 | Surrounding rock dynamic stability composite criterion calculation method under explosive load |
| US20220244155A1 (en) * | 2020-11-10 | 2022-08-04 | Anhui University of Science and Technology | System and method of monitoring vibration of a blasting model test for a jointed rock mass |
| US12031956B2 (en) * | 2020-11-10 | 2024-07-09 | Anhui University of Science and Technology | System and method of monitoring vibration of a blasting model test for a jointed rock mass |
| CN113091546A (en) * | 2021-04-23 | 2021-07-09 | 安徽理工大学 | Device for monitoring whether explosive in blast hole is completely detonated |
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| CN114216784A (en) * | 2021-12-13 | 2022-03-22 | 河北工程大学 | Uniform confining pressure loading method for large-scale circular test piece under dynamic explosive load |
| CN114324468A (en) * | 2021-12-29 | 2022-04-12 | 中国矿业大学(北京) | Explosion experimental device and one-dimensional explosion stress experimental method |
| CN114544706A (en) * | 2022-01-18 | 2022-05-27 | 中国矿业大学(北京) | Experimental system and method for measuring explosive product energy distribution proportion relation |
| CN115615852A (en) * | 2022-12-16 | 2023-01-17 | 昆明理工大学 | Device for measuring expansion stress of blasting crack of cyclic load lower model |
| CN116183668A (en) * | 2022-12-28 | 2023-05-30 | 中国矿业大学 | System and method for testing super-dynamic blasting parameters under confining pressure condition |
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