CN105891025A - Experiment loading system and method for researching interaction of explosion stress waves and moving cracks - Google Patents
Experiment loading system and method for researching interaction of explosion stress waves and moving cracks Download PDFInfo
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- CN105891025A CN105891025A CN201610214531.XA CN201610214531A CN105891025A CN 105891025 A CN105891025 A CN 105891025A CN 201610214531 A CN201610214531 A CN 201610214531A CN 105891025 A CN105891025 A CN 105891025A
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- 238000002474 experimental method Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004880 explosion Methods 0.000 title claims abstract description 10
- 230000003993 interaction Effects 0.000 title claims abstract description 8
- 239000002360 explosive Substances 0.000 claims abstract description 74
- 238000012360 testing method Methods 0.000 claims abstract description 63
- 239000000523 sample Substances 0.000 claims abstract description 23
- 230000000977 initiatory effect Effects 0.000 claims abstract description 7
- 238000011160 research Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 230000037361 pathway Effects 0.000 claims description 3
- 229940079593 drug Drugs 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract 1
- 238000005422 blasting Methods 0.000 description 9
- 239000011435 rock Substances 0.000 description 8
- 230000033001 locomotion Effects 0.000 description 6
- 208000037656 Respiratory Sounds Diseases 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 230000010534 mechanism of action Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 206010016173 Fall Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005511 kinetic theory Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
- G01N3/30—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
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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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/303—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated only by free-falling weight
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Abstract
The invention discloses an experiment loading system and method for researching interaction of explosion stress waves and moving cracks. A drop hammer freely falls and hits an impact head, and the impact head applies impact loads on a test piece, so that the test piece is subjected to crack initiation to generate moving cracks; an electric signal is generated when the drop hammer makes contact with the impact head, the electric signal is transmitted to an automatic tracking synchronous machine through a signal line, and the automatic tracking synchronous machine sends out triggering signals to a multi-channel pulse igniter; the interval between the time when the automatic tracking synchronous machine receives the electric signal and the time when the automatic tracking synchronous machine sends out the triggering signals can be set in advance; the multi-channel pulse igniter discharges immediately after receiving the triggering signals, discharging is performed at the tip of an initiation probe connected with an initiation line to ignite explosive in an explosive bag, and explosion stress waves are generated; the experiment loading system ignites one or more explosive bags at different periods of moving crack expansion, the explosion time interval of multiple explosive bags can also be set artificially, and different experiment requirements can be met.
Description
Technical field
The present invention relates to the explosion testing experimental system of fracture mechanics research field, particularly relate to a kind of research detonation stresses
The experiment loading system of ripple and moving crack interaction mechanism and method.
Background technology
Drill eye blasting technology ore deposit in the open and Deep Mine, road construction, tunnel and vertical excavation have a wide range of applications.
Blast action is high temperature, high pressure and the high speed processes completed a moment.The overwhelming majority is by quick-fried medium rock material
It is that 1 years natural sediments are formed, there is hole and the crackle of different order random distribution；Macroscopically, natural rock
Body is heterogeneous body, material non-resilient, anisotropic.Due to the effect of tectonic movement He other stress, natural
Rock mass is cut by joint, various geologic structure face, crack, tomography.Owing to rock mass existing substantial amounts of Geological Defects,
Such as crackle, the plane of disruption, joint, tomography, hole etc., rock shows the physical mechanics of complexity under Blast Loads
Process, so that the research of this problem becomes complex and difficulty.
In recent years, along with the continuous progress of science and technology, researcher was by advanced experimental facilities such as high-speed photography
Instrument etc. are to various phenomenons produced by explosion moment rock mass such as strain, stress, the observation that ruptures etc., and the explosion to rock is broken
The research of bad mechanism achieves certain achievement, has certain guidance meaning and practical value to practical engineering application.But
Rock mass is composed and deposits a large amount of crack and plane of weakness, thus in engineering explosion, often relate to Explosive stress wave and these discontinuity surfaces
Effect.Due to precision and the delayed ignition technology of priming system, part big gun hole is necessarily caused first to be detonated, part big gun rises behind hole
Quick-fried, thus certainly exist the interaction of the stress wave that the crackle that first quick-fried big gun hole produces produces and quick-fried with rear quick-fried big gun hole
The problems such as raw lead crack is mutually communicated.But the experiment interacted with moving crack about Explosive stress wave at present and grinding
Study carefully relatively fewer.Therefore, it is necessary to the process that Explosive stress wave is interacted with moving crack and mechanism, stress wave pair
The problems such as the impact of moving crack propagation law are studied.This is for Blasting Parameters Optimization, improvement blasting technology and breaks
The development etc. splitting kinetic theory all has important theoretical and practical significance.
Summary of the invention
It is an object of the invention to for the problems referred to above, it is provided that a kind of study what Explosive stress wave and moving crack interacted
Explosively loading experimental system.This system can apply explosive load to test specimen during experiment specimen crack extension, makes quick-fried
Fried stress wave activity in moving crack, can utilize simultaneously delayed ignition technical controlling Explosive stress wave act on crackle time
Between, and can by change explosive drug package dose, medicated bag position, medicated bag quantity, different medicated bag burst times etc. because of
Usually change the experiment conditions such as stress wave intensity, stress wave angle of incidence, stress wave superimposition effect, thus study different condition
Lower Explosive stress wave and the mechanism of action of moving crack.
It is an object of the invention to be achieved through the following technical solutions:
For studying the experiment loading system that Explosive stress wave interacts with moving crack, by dropping hammer, free-falling is hit
Impact head, impact head applies impact load to test specimen, makes test specimen crack initiation produce moving crack；Contact with impact head dropping hammer
Moment, produce a signal of telecommunication, the signal of telecommunication is delivered to automatic tracking type synchrodrive by holding wire, automatic tracking type with
Step machine sends triggering signal at most channel pulse lighter；Automatic tracking type synchrodrive receives the signal of telecommunication to sending triggering signal
Interval time can pre-set；Multichannel pulse igniter discharges after receiving triggering signal immediately, connects at detonating cord
Detonate probe tip electric discharge, the explosive in primer, produce Explosive stress wave；Described experiment loading system is in motion
The different times of cracks can spread ignites one or more medicated bags, also can manually arrange the interval time of multiple medicated bag explosions, full
The requirement of experiment that foot is different.
Described experiment loading system, described experiment loading system include support (14), impact head (1), drop hammer (2),
Fixture (12), test specimen (13), explosive medicated bag (16), support (14) arranges crossbeam, impact head (1)
Holding with sharp-pointed portion, impact head (1) is through the through hole on this crossbeam, and described sharp-pointed portion contacts with test specimen (13)；?
Frame is additionally provided with vertical rail on (14), and drop hammer (2) coordinate with vertical rail, can move downward along vertical rail
Impact head (1) is impacted, sample manufactures moving crack；One it is arranged as required to many on test specimen (13)
Individual big gun hole；The fixing termination (11) of fixture (12) is clipped in explosive medicated bag (16) both sides in test specimen (13), will
Test specimen (13) is adjusted to suitable position and is fixed, it is ensured that the stability of test specimen (13) and explosive medicated bag (16)
Sealing；Detonate the most advanced and sophisticated explosive medicated bag (16) that inserts of probe (10), is then inserted by explosive medicated bag (16)
In the big gun hole of test specimen (13)；Impact head (1), drop hammer (2) are connected to automatic tracking type together by wire and holding wire
The triggering target port of step machine, before impact head is hit in whereabouts of dropping hammer, holding wire keeps off state；Drop hammer and hit impact
Head time, holding wire with drop hammer, impact head formed a close access, now automatic tracking type synchrodrive receives triggering signal；
After triggering signal received by automatic tracking type synchrodrive, again to multichannel pulse point after one section of delay time set in advance
Firearm sends pulse signal, multichannel pulse igniter electric discharge ignition charge medicated bag (16).
Described experiment loading system, in order to increase the impulsive force dropped hammer, (2) top fixed placement of dropping hammer one or more
Counterweight (3).
Described experiment loading system, described drops hammer and impact head is all made with metal, can shape in the moment of both contacts
Become circuit pathways, produce the signal of telecommunication and pass to automatic tracking type synchrodrive.
Described experiment loading system, explosive medicated bag (16) height is identical with test specimen (13) thickness, explosive medicated bag (16)
External diameter is identical with the blasthole diameter of test specimen (13).
Described experiment loading system, if there being multiple big gun hole in test specimen, needs to arrange the fixture of respective numbers and fixing end
Fixing medicated bag, the size of fixture can determine according to the position of medicated bag.
Described experiment loading system, automatic tracking type synchrodrive has multiple signal output port, once can freely arrange
Multiple delay times, with the precision controlling delay time of μ s level.
According to arbitrary described experiment loading system research Explosive stress wave and the method for moving crack interaction, including with
Lower step:
First, connect automatic tracking type synchrodrive and multichannel pulse igniter with holding wire, and in multichannel pulse firing
The corresponding discharge channel of device connects holding wire；
Then, need in explosive medicated bag, load a certain amount of explosive according to experiment, and make, with enamel-covered wire, the probe that detonates,
Probe tip is inserted in explosive, explosive medicated bag is loaded in test specimen big gun hole；
Afterwards, the voltage output amplitude of automatic tracking type synchrodrive and each time controlling communication channel delay are set, test specimen
It is fixed on fixture；
Finally, the holding wire of multichannel pulse igniter discharge channel is connected with the probe end that detonates, by a holding wire
One end be connected with the triggering target port of automatic tracking type synchrodrive, the other end is simultaneously connected with and drops hammer and impact head, open from
Motion tracking formula synchrodrive and multichannel pulse igniter, make free-falling of dropping hammer.
The experiment loading system for studying Explosive stress wave and the moving crack mechanism of action of the present invention, it is possible to research difference
Intensity, different incidence angles, the Explosive stress wave impact on moving crack propagation law of different superposition situation, detonation stresses
Ripple the most advanced and sophisticated diffraction of moving crack, reflect, scattering situation, the different phase Explosive stress wave in crack propagation process
Impact on moving crack, and the most advanced and sophisticated strain under the influence of Explosive stress wave of moving crack, change of stress field situation,
And on this basis blasting rock-broken theory is carried out deeper into research.
What system utilized that metal makes drop hammer and impact head comes in contact and triggers automatic tracking type synchrodrive, easy and simple to handle,
Reliability is high.Holding wire one end connects the triggering target port of automatic tracking type synchrodrive, and the other end is drawn two wires and is divided
Lian Jie not drop hammer and impact head, before impact head is hit in whereabouts of dropping hammer, holding wire keeps off state.Drop hammer and hit punching
When tapping the head, holding wire with drop hammer, impact head formed a close access, now automatic tracking type synchrodrive receive triggering letter
Number.The expansion rate of moving crack is generally about 300m/s, drops hammer and hits impact head and make the by the impact load effect of test specimen
It is also required to the tens of microseconds time to test specimen crack initiation.And the speed of Explosive stress wave is generally about 2000m/s, it is far longer than
Crack propagation velocity is in order to ensure that Explosive stress wave can interact with moving crack, it is necessary to the strict test specimen that controls is subject to
The interval time between Explosive stress wave is produced to impact load and explosive charge.Therefore system uses automatic tracking type to synchronize
Machine is as delays time to control equipment, after it receives triggering signal, again to manifold after one section of delay time set in advance
Road pulse igniter sends pulse signal.Automatic tracking type synchrodrive has multiple signal output port, once can freely set
Put multiple delay time, with the precision controlling delay time of μ s level, fully meet the required precision of blasting experiment, Er Qiekang
Interference performance is strong, easy to operate, it is possible to ensure reliability and the success rate of experiment of system.System utilizes multichannel pulse
Lighter electric discharge primer, can ignite one or more medicated bag in once experiment, have the biggest motility, it is possible to
Meet different experiments requirement.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of the embodiment of the present invention；
Fig. 2 is that schematic diagram fixed by the test specimen of the present invention；
Fig. 3 is the charging means schematic diagram of the present invention；
In figure: 1 impact head, 2 drop hammer, 3 counterweights, 4 wires, 5 holding wire a, 6 automatic tracking type synchrodrives, 7
Holding wire b, 8 multichannel pulse igniters, 9 holding wire c, 10 detonate probe, 11 fix termination, 12 fixtures, 13
Test specimen, 14 supports, 15 bolts, 16 explosive medicated bags.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
With reference to Fig. 1-3, the experiment loading system of research Explosive stress wave and moving crack interaction mechanism include support 14,
Impact head 1, dropping hammer 2, support 14 arranges crossbeam, impact head 1 one end is with sharp-pointed portion, and impact head 1 is through on this crossbeam
Through hole, described sharp-pointed portion contacts with test specimen 13；It is additionally provided with vertical rail on support 14, drops hammer and 2 join with vertical rail
Close, can move downward along vertical rail and impact head 1 is impacted, sample manufacture moving crack, in order to increase
The impulsive force dropped hammer, 2 tops of dropping hammer can be with one or more counterweights 3 of fixed placement；One it is arranged as required to many on test specimen 13
Individual big gun hole, explosive medicated bag 16 height is identical with test specimen 13 thickness, and explosive medicated bag 16 external diameter is identical with the blasthole diameter of test specimen 13.
The most advanced and sophisticated of probe 10 of detonating inserts explosive medicated bag 16, the end of the probe 10 that detonates with sand papering.Then by explosive medicine
In the big gun hole of bag 16 insertion test specimen 13.
Explosive medicated bag 16 both sides being clipped in test specimen 13 the fixing termination 11 of fixture 12, are adjusted to suitable position by test specimen 13
Put, turn bolt 15 and test specimen 13 is fixed, to ensure stability and the sealing of explosive medicated bag 16 of test specimen 13.
If test specimen has multiple big gun hole, needing, the fixture of respective numbers is set and medicated bag is fixed in fixing termination, the chi of fixture
Very little can determine according to the position of medicated bag.
Impact head 1, dropped hammer the 2 triggering target ports being connected to automatic tracking type synchrodrive by wire and holding wire, is dropping hammer
Falling before hitting impact head, holding wire keeps off state.Drop hammer when hitting impact head, holding wire with drop hammer, impact
Capitiform becomes a close access, and now automatic tracking type synchrodrive receives triggering signal；Automatic tracking type synchrodrive is received tactile
After signalling, after one section of delay time set in advance, send pulse signal, manifold to multichannel pulse igniter again
Road pulse igniter electric discharge ignition charge medicated bag 16.
Automatic tracking type synchrodrive has multiple signal output port, once can freely arrange multiple delay time, with μ s level
Precision controlling delay time, fully meet the required precision of blasting experiment, and capacity of resisting disturbance be strong, easy to operate,
Ensure that the reliability of system and the success rate of experiment.
The experiment loading system for studying Explosive stress wave and the moving crack mechanism of action of the present invention, its concrete operations side
Method is:
First, connect automatic tracking type synchrodrive and multichannel pulse igniter with holding wire, and in multichannel pulse firing
The corresponding discharge channel of device connects holding wire；
Then, need in explosive medicated bag, load a certain amount of explosive according to experiment, and make, with enamel-covered wire, the probe that detonates,
Probe tip is inserted in explosive, explosive medicated bag is loaded in test specimen big gun hole, need to place counterweight on dropping hammer according to experiment；
Afterwards, the voltage output amplitude of automatic tracking type synchrodrive and each time controlling communication channel delay are set, test specimen
It is fixed on fixture.
Finally, the holding wire of multichannel pulse igniter discharge channel is connected with the probe end that detonates, by a holding wire
One end be connected with the triggering target port of automatic tracking type synchrodrive, the other end is simultaneously connected with and drops hammer and impact head, open from
Motion tracking formula synchrodrive and multichannel pulse igniter, make free-falling of dropping hammer.
Described drop hammer and impact head is all made with metal, circuit pathways can be formed in the moment of both contacts, produce telecommunications
Number pass to automatic tracking type synchrodrive.
Described automatic tracking type synchrodrive can reach the precision setting snooze interval of Microsecond grade, meets blasting experiment
Required precision.
Described multichannel pulse igniter can be with the one or more medicated bag of once blasting.
Time delay 100 μ s after crackle crack initiation illustrates as a example by igniting a medicated bag.
As shown in Figure 1, 2, 3, concrete steps include:
Step one, powder charge in explosive medicated bag 16.With reference to Fig. 2-Fig. 3, blasting parameter as required, such as powder charge
Quality, degree of packing etc., weigh with scale appropriate explosive, loads cylindrical explosive medicated bag 16.Explosive medicated bag 16 is high
Spending identical with test specimen 13 thickness, explosive medicated bag 16 external diameter is identical with the blasthole diameter of test specimen 13.By the probe 10 that detonates
Most advanced and sophisticated insertion explosive medicated bag 16, the end of the probe 10 that detonates with sand papering.Then explosive medicated bag 16 is inserted test specimen
In the big gun hole of 13.
Step 2, fixing test specimen 13.With reference to Fig. 2-Fig. 3, the fixing termination 11 of fixture 12 is clipped in test specimen 13
Explosive medicated bag 16 both sides, are adjusted to suitable position by test specimen 13, turn bolt 15 and are fixed test specimen 13, with
Ensure stability and the sealing of explosive medicated bag 16 of test specimen 13.
Step 3, with reference to Fig. 1, according to experiment needs, at the counterweight 3 adding suitable weight on 2 that drops hammer, then falling
On hammer 2 and impact head 1, a piece wire 4 of each connection, all receives the other end of two wires same one end of holding wire 5,
Again the other end of holding wire 5 is connected with the triggering target port of automatic synchronous tracing machine 6.
Step 4, holding wire 7 one end connecting No. 1 signal output port of automatic tracking type synchrodrive 6, the other end is even
Connect No. 1 signal input port of multichannel pulse igniter 8.Logical in corresponding No. 1 electric discharge of multichannel pulse igniter 8
Road port connects holding wire 9.The other end of holding wire 9 is connected with the end of the probe 10 that detonates on test specimen.
Step 5, open automatic tracking type synchrodrive 6, first press the Reset button and recover instrument initial setting up, then by defeated
Going out voltage amplitude and be adjusted to 5V, triggering mode is set to single target to be triggered, and No. 1 signal output port delay time is set to
100μs.Then open multichannel pulse igniter, then open the switch of No. 1 discharge channel.
Step 6, make 2 free-fallings of dropping hammer, hit impact head 1, test specimen 13 is applied impact load, make test specimen 13
Cracking.Drop hammer 2 when hitting impact head 1, holding wire 5 is formed Guan Bi circuit, produces the signal of telecommunication and trigger from motion tracking
Formula synchrodrive 6.After 100 μ s, automatic tracking type synchrodrive 6 transmits pulse signal and triggers multichannel pulse igniter 8, makes
Multichannel pulse igniter 8 discharges ignition charge medicated bag 16, produces Explosive stress wave in test specimen 13.Close the most successively
Close No. 1 discharge channel, multichannel pulse igniter 8, the switch of automatic tracking type synchrodrive 6.2 punching is hit dropping hammer
Tap the head while 1, it is possible to use high-speed camera, high-speed schlieren equipment, ultra dynamic strain test instrument, DIC system,
Test specimen in moving crack expansion process is produced by the equipment such as dynamic photo-elasticity light path system, digital dynamic caustics light path system
Raw various phenomenons such as strain, stress, rupture etc. are observed, record.Study movement crack tip region stress accordingly
Intensity factor, stress, the Changing Pattern of strain field, the stress distribution of the whole test specimen whole audience, Changing Pattern, crack tip
The diffraction of stress wave, Scattering Rules, thus analyze the interaction mechanism of Explosive stress wave and moving crack further.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (8)
1. for studying the experiment loading system that Explosive stress wave interacts with moving crack, it is characterised in that logical
Crossing free-falling of dropping hammer and hit impact head, impact head applies impact load to test specimen, makes test specimen crack initiation produce moving crack；
In the moment contacted with impact head of dropping hammer, producing a signal of telecommunication, it is same that the signal of telecommunication is delivered to automatic tracking type by holding wire
Step machine, automatic tracking type synchrodrive sends triggering signal at most channel pulse lighter；Automatic tracking type synchrodrive receives electricity
Signal can pre-set to sending the interval time triggering signal；Multichannel pulse igniter receive triggering signal after immediately
Electric discharge, at the probe tip electric discharge of detonating that detonating cord connects, the explosive in primer, produces Explosive stress wave；Described
The different times one or more medicated bags of ignition that experiment loading system extend in moving crack, during the interval of multiple medicated bag explosions
Between also can manually arrange, meet different requirement of experiment.
Experiment loading system the most according to claim 1, it is characterised in that described experiment loading system includes
Support (14), impact head (1), drop hammer (2), fixture (12), test specimen (13), explosive medicated bag (16), support (14)
On crossbeam is set, impact head (1) one end is with sharp-pointed portion, and impact head (1) is through the through hole on this crossbeam, described point
Sharp portion contacts with test specimen (13)；Support is additionally provided with vertical rail on (14), and drop hammer (2) coordinate with vertical rail,
Can move downward along vertical rail and impact head (1) is impacted, sample manufactures moving crack；Test specimen (13)
On be arranged as required to one or more big gun holes；The fixing termination (11) of fixture (12) is clipped in the explosive in test specimen (13)
Medicated bag (16) both sides, are adjusted to suitable position by test specimen (13) and are fixed, it is ensured that stablizing of test specimen (13)
Property and the sealing of explosive medicated bag (16)；Detonate the most advanced and sophisticated explosive medicated bag (16) that inserts of probe (10), then will be fried
Medicine medicated bag (16) inserts in the big gun hole of test specimen (13)；Impact head (1), drop hammer (2) are connected by wire and holding wire
Receiving the triggering target port of automatic tracking type synchrodrive, before impact head is hit in whereabouts of dropping hammer, holding wire keeps open circuit shape
State；Drop hammer when hitting impact head, holding wire with drop hammer, impact head forms a close access, now automatic tracking type with
Step machine receives triggering signal；After triggering signal received by automatic tracking type synchrodrive, through one section of delay time set in advance
After send pulse signal to multichannel pulse igniter again, multichannel pulse igniter electric discharge ignition charge medicated bag (16).
Experiment loading system the most according to claim 2, it is characterised in that in order to increase the impulsive force dropped hammer,
Drop hammer (2) top one or more counterweights of fixed placement (3).
Experiment loading system the most according to claim 2, it is characterised in that described dropping hammer is equal with impact head
Make with metal, circuit pathways can be formed in the moment of both contacts, produce the signal of telecommunication and pass to automatic tracking type synchrodrive.
Experiment loading system the most according to claim 2, it is characterised in that explosive medicated bag (16) height with
Test specimen (13) thickness is identical, and explosive medicated bag (16) external diameter is identical with the blasthole diameter of test specimen (13).
Experiment loading system the most according to claim 2, it is characterised in that if there being multiple big gun hole in test specimen,
Needing to arrange the fixture of respective numbers and medicated bag is fixed in fixing termination, the size of fixture can determine according to the position of medicated bag.
Experiment loading system the most according to claim 2, it is characterised in that automatic tracking type synchrodrive has many
Individual signal output port, once can freely arrange multiple delay time, with the precision controlling delay time of μ s level.
8. according to the arbitrary described experiment loading system research Explosive stress wave of claim 1-7 and moving crack phase
The method of interaction, it is characterised in that comprise the following steps:
First, connect automatic tracking type synchrodrive and multichannel pulse igniter with holding wire, and at multichannel pulse point
The corresponding discharge channel of firearm connects holding wire；
Then, need in explosive medicated bag, load a certain amount of explosive according to experiment, and make, with enamel-covered wire, the probe that detonates,
Probe tip is inserted in explosive, explosive medicated bag is loaded in test specimen big gun hole；
Afterwards, the voltage output amplitude of automatic tracking type synchrodrive and each time controlling communication channel delay are set, examination
Part is fixed on fixture；
Finally, the holding wire of multichannel pulse igniter discharge channel is connected with the probe end that detonates, by a signal
One end of line is connected with the triggering target port of automatic tracking type synchrodrive, and the other end is simultaneously connected with and drops hammer and impact head, opens
Automatic tracking type synchrodrive and multichannel pulse igniter, make free-falling of dropping hammer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610214531.XA CN105891025B (en) | 2016-04-08 | 2016-04-08 | For studying Explosive stress wave and the experiment loading system and method for moving crack interaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610214531.XA CN105891025B (en) | 2016-04-08 | 2016-04-08 | For studying Explosive stress wave and the experiment loading system and method for moving crack interaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105891025A true CN105891025A (en) | 2016-08-24 |
| CN105891025B CN105891025B (en) | 2018-04-24 |
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| CN201610214531.XA Expired - Fee Related CN105891025B (en) | 2016-04-08 | 2016-04-08 | For studying Explosive stress wave and the experiment loading system and method for moving crack interaction |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404563A (en) * | 2016-10-14 | 2017-02-15 | 中国矿业大学(北京) | System and method for studying interaction mechanism of explosion stress wave and moving crack |
| CN108827798A (en) * | 2018-07-02 | 2018-11-16 | 中国矿业大学(北京) | A kind of synchronous experimental system of caustics-loading by means of digital image correlation method and method |
| CN109991075A (en) * | 2019-03-14 | 2019-07-09 | 中国矿业大学(北京) | A kind of impact test loading system |
| CN110231282A (en) * | 2019-06-04 | 2019-09-13 | 西安近代化学研究所 | A kind of explosive knockout process strain rate measuring device |
| CN110320116A (en) * | 2018-03-29 | 2019-10-11 | 中国矿业大学(北京) | It is a kind of it is photoelastic with caustics method synchronize the blasting experiment system that uses |
| CN110530787A (en) * | 2019-09-05 | 2019-12-03 | 西安近代化学研究所 | A kind of explosive stress test device based on multiple pulses test |
| CN110672438A (en) * | 2019-10-16 | 2020-01-10 | 浙江科技学院 | Round hole linear nail column type double-sided energy-gathering joint cutting device for dynamically punching rock-soil body |
| CN111624107A (en) * | 2020-07-10 | 2020-09-04 | 东北大学 | Dynamic and static combined loading rock-soil experimental device and using method thereof |
| CN113075024A (en) * | 2021-04-01 | 2021-07-06 | 昆明理工大学 | Explosion loading device and test system for porous digital dynamic caustic experiment system |
| CN114005347A (en) * | 2021-11-03 | 2022-02-01 | 天津大学 | Experimental device and method for researching earthquake dynamic triggering |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718660A (en) * | 2009-11-20 | 2010-06-02 | 中国石油大学(华东) | Explosion dynamic-load fracturing simulation test device |
| CN102788732A (en) * | 2012-07-30 | 2012-11-21 | 中南钻石股份有限公司 | Impact resistance test device for diamond compound sheet |
| CN104777037A (en) * | 2015-04-10 | 2015-07-15 | 中国矿业大学(北京) | Explosive fracturing device for model plates with different thicknesses under uniaxial load |
-
2016
- 2016-04-08 CN CN201610214531.XA patent/CN105891025B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718660A (en) * | 2009-11-20 | 2010-06-02 | 中国石油大学(华东) | Explosion dynamic-load fracturing simulation test device |
| CN102788732A (en) * | 2012-07-30 | 2012-11-21 | 中南钻石股份有限公司 | Impact resistance test device for diamond compound sheet |
| CN104777037A (en) * | 2015-04-10 | 2015-07-15 | 中国矿业大学(北京) | Explosive fracturing device for model plates with different thicknesses under uniaxial load |
Non-Patent Citations (5)
| Title |
|---|
| 李清 等: "含单侧预制裂纹梁的冲击动态断裂过程试验研究", 《振动与冲击》 * |
| 杨仁树 等: "冲击荷载下缺陷介质裂纹扩展的DLDC试验", 《岩石力学与工程学报》 * |
| 杨仁树 等: "冲击荷载下缺陷介质裂纹扩展的DLDC试验", 《岩石力学与工程学报》 * |
| 杨仁树 等: "定向断裂双孔爆破裂纹扩展的动态行为", 《爆炸与冲击》 * |
| 杨立云 等: "新型数字激光动态焦散线实验系统及其应用", 《中国矿业大学学报》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404563A (en) * | 2016-10-14 | 2017-02-15 | 中国矿业大学(北京) | System and method for studying interaction mechanism of explosion stress wave and moving crack |
| CN110320116A (en) * | 2018-03-29 | 2019-10-11 | 中国矿业大学(北京) | It is a kind of it is photoelastic with caustics method synchronize the blasting experiment system that uses |
| CN108827798A (en) * | 2018-07-02 | 2018-11-16 | 中国矿业大学(北京) | A kind of synchronous experimental system of caustics-loading by means of digital image correlation method and method |
| CN109991075A (en) * | 2019-03-14 | 2019-07-09 | 中国矿业大学(北京) | A kind of impact test loading system |
| CN110231282A (en) * | 2019-06-04 | 2019-09-13 | 西安近代化学研究所 | A kind of explosive knockout process strain rate measuring device |
| CN110530787A (en) * | 2019-09-05 | 2019-12-03 | 西安近代化学研究所 | A kind of explosive stress test device based on multiple pulses test |
| CN110530787B (en) * | 2019-09-05 | 2022-05-24 | 西安近代化学研究所 | Explosive stress testing device based on multiple pulse tests |
| CN110672438A (en) * | 2019-10-16 | 2020-01-10 | 浙江科技学院 | Round hole linear nail column type double-sided energy-gathering joint cutting device for dynamically punching rock-soil body |
| CN110672438B (en) * | 2019-10-16 | 2021-11-23 | 浙江科技学院 | Round hole linear nail column type double-sided energy-gathering joint cutting device for dynamically punching rock-soil body |
| CN111624107A (en) * | 2020-07-10 | 2020-09-04 | 东北大学 | Dynamic and static combined loading rock-soil experimental device and using method thereof |
| CN113075024A (en) * | 2021-04-01 | 2021-07-06 | 昆明理工大学 | Explosion loading device and test system for porous digital dynamic caustic experiment system |
| CN114005347A (en) * | 2021-11-03 | 2022-02-01 | 天津大学 | Experimental device and method for researching earthquake dynamic triggering |
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