CN106501102A - A kind of coal petrography blast impulse damage measure method and device - Google Patents
A kind of coal petrography blast impulse damage measure method and device Download PDFInfo
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- CN106501102A CN106501102A CN201610900421.9A CN201610900421A CN106501102A CN 106501102 A CN106501102 A CN 106501102A CN 201610900421 A CN201610900421 A CN 201610900421A CN 106501102 A CN106501102 A CN 106501102A
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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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of coal petrography blast impulse damage measure method and device, belongs to dielectric damages mechanics and shock dynamics research field.Measure traverse line is placed in test specimen, measuring instrument is drawn and be connected to shielding line, then the coil of uniform winding coil is placed on outside test specimen；Then explosive and detonator are positioned over explosive intracavity, detonator is connected with lighter by bus；Digital speckle instrument is set up, and computer has been connected to by data wire；Then operation lighter is lighted a fire, by cap sensitive explosive, the digital image information measured by measuring instrument record measure traverse line cutting magnetic line information, computer recording digital speckle instrument；Test specimen damage feature is obtained by back analysis and image procossing again.Advantage is：Damage feature of the coal rock medium under Blast Shock can be studied with precise quantification by the present invention.
Description
Technical field
The present invention relates to dielectric damages mechanics and shock dynamics research field, more particularly, to a kind of coal petrography blast impulse
Damage measure method and device.
Background technology
With the increase of coal mining depth, km deep-well is also being continued to bring out, and incident is entering for mining conditions
One step is complicated, and such as mine crustal stress and gas pressure increase, gas bearing capacity increase；Correspondingly, bump, coal and gas are dashed forward
Go out, the disaster problem such as gas explosion also in rising trend, and destructiveness is also more and more serious.
When the pressure in coal and rock exceedes the strength degree of coal and rock itself, the energy for gathering can be caused to discharge suddenly,
There is thump effect in roadway, cause huge destruction and damage；The destruction of coal and gas prominent and gas explosion is damaged
Wound effect is also thus, assume high-strength impact, transient state feature.Experiment method and the measurement means such as traditional static state, Quasi dynamic
It is difficult to damage effect true, that comprehensively reaction moment, strong power shock effect are brought, therefore, for more authentic and valid ground instead
Answer degree of impairment of the coal petrography under the effect of the dynamic impacts such as bump, gas explosion, it is necessary to invent one kind and can embody by force
The effect of power moment impact accurately can effectively measure method of testing and the device of damage effect again, be to study coal petrography in various impacts
Damage feature research under dynamic action provides support, is to take precautions against dynamic impact problem accident or reduce related accidents consequence seriousness to carry
For foundation.
Content of the invention
For existing technical problem, the invention provides a kind of coal petrography blast impulse damage measure method and device, leads to
The design analyzed by blast impulse, change in displacement cutting magnetic line and digital image acquisition is crossed, coal petrography can be studied with precise quantification
Damage feature of the medium under Blast Shock.
The technical solution used in the present invention is：
A kind of coal petrography blast impulse damage measure method, its concrete steps include：
1) measure traverse line is placed in test specimen, makes test specimen, and the shielding line of connection measure traverse line is drawn test specimen；
2) coil uniform winding is put in coil, after by test specimen be positioned over coil set in；
3), after placing explosive chamber, fixed support and impact stake, locking flange, explosive and detonator are opened, will even
Lighter is drawn and be connected to the bus for connecing detonator, then, will be tight for locking flange dense block；
4) coil is connected with power supply, shielding line is connected with measuring instrument；Digital speckle instrument is set up, and has been connected by data wire
It is connected to computer；
5) fine status of each connection are checked, is switched on power, open measuring instrument, digital speckle instrument and computer；
6) operation lighter is lighted a fire, and by cap sensitive explosive, Blast Shock passes to examination by impact stake
Part；
7) measuring instrument record measure traverse line sectioned coil forms the data message of the magnetic line of force, computer recording digital speckle instrument
The data message for measuring, by back analysis and Digital Image Processing, obtains damage feature of the test specimen under Blast Shock.
A kind of device for realizing coal petrography blast impulse damage measure method, which includes explosive chamber, fixed support, impact stake,
Test specimen, locking flange, explosive, detonator, bus, lighter, coil set, coil, power supply, measure traverse line, shielding line, measuring instrument,
Digital speckle instrument, data wire, computer；The explosive chamber is fixed by fixed support, and explosive top of chamber is provided with bus manhole appendix；
The impact stake is located at explosive chamber bottom, and impact stake enters explosive chamber；The test specimen is located at below impact stake；The locking method
Orchid is made up of ring flange, flexible gasket, screw bolt and nut, and is located at 1/7～1/5 explosive chamber, is put by opening locking flange
Explosive and detonator are put in explosive intracavity；The lighter is connected with detonator by bus；The coil set is placed on outside test specimen, coil
At least big than the test specimen diameter 2cm of set diameter；The coil uniform winding is put in coil, and is connected with power supply；The measurement is led
Line is placed in test specimen；The shielding line is connected to measure traverse line two ends, and connects measuring instrument, and measuring instrument is cut in order to record measure traverse line
Cut magnetic line of force information；The digital speckle instrument connects computer by data wire.
Further, the shielding line is constituted by wire and by the screen layer that nonmagnetic substance is made.
The invention has the beneficial effects as follows, bump, coal and gas prominent can more truly be reproduced by the present invention
And the destruction damage effect that the thump such as gas explosion is produced；Enter by digital speckle technology and using cutting magnetic line simultaneously
Row is finally inversed by stress-strain relation, more have studied damage feature of the coal rock medium under Blast Shock precise quantification.
Description of the drawings
Structural representations of the Fig. 1 for the embodiment of the present invention one.
Fig. 2 is coil set and test specimen location diagram.
Structural representations of the Fig. 3 for the embodiment of the present invention two.
Wherein：Lock flange, 6- explosives, 7- detonators, 8- in 1- explosives chamber, 2- fixed supports, 3- impact stakes, 4- test specimens, 5-
Bus, 9- lighters, 10- coil sets, 11- coils, 12- power supplys, 13- measure traverse lines, 14- shielding lines, 15- measuring instruments, 16- numbers
Word speckle instrument, 17- data wires, 18- computers.
Specific embodiment
The present invention is further elaborated with reference to the accompanying drawings and examples.
The structural representation of the embodiment of the present invention one is illustrated in figure 1, a kind of coal petrography blast impulse damage measure method
Device, it include that flange 5, explosive 6, detonator 7, bus 8, lighter are locked in explosive chamber 1, fixed support 2, impact stake 3, test specimen 4
9, coil set 10, coil 11, power supply 12, measure traverse line 13, shielding line 14, measuring instrument 15, digital speckle instrument 16, data wire 17,
Computer 18；Explosive chamber 1 is fixed by fixed support 2, is provided with 8 manhole appendix of bus at the top of explosive chamber 1；Impact stake 3 is located at explosive
1 bottom of chamber, and impact stake 3 enters explosive chamber 1；Test specimen 4 is located at below impact stake 3；Locking flange 5 by ring flange, flexible gasket,
Screw bolt and nut is constituted, and is located at 1/7～1/5 explosive chamber 1, by opening locking 5 explosive 6 of flange and detonator 7 in fried
In medicine chamber 1；Lighter 9 is connected with detonator 7 by bus 8；Coil set 10 is placed on outside test specimen 4, as shown in Fig. 2 coil set 10 is straight
At least big than 4 diameter of the test specimen 2cm in footpath；11 uniform winding of coil is on coil set 10, and is connected with power supply 12；Measure traverse line 13 is put
In test specimen 4；Shielding line 14 is constituted by wire and by the screen layer that nonmagnetic substance is made, and which draws from 13 two ends of measure traverse line
Go out, be connected to measuring instrument 15；Measuring instrument 15 is in order to recording 13 cutting magnetic line information of measure traverse line；Digital speckle instrument 16 is in order to adopting
Collection test specimen impact injury image information, which passes through data wire 17 and is connected to computer 18.
The structural representation of the embodiment of the present invention two is illustrated in figure 3, which is essentially identical with embodiment one, unique difference exists
In in order to investigate dimensional effect, 4 size of test specimen of embodiment two is bigger than embodiment one, and correspondingly, impact stake 3 is in embodiment
On the basis of one, external diffused part is corresponding with sample dimensions, to ensure Blast Shock stepless action in test specimen 4.
A kind of coal petrography blast impulse damage measure method, which includes：
1) measure traverse line 13 is placed in test specimen 4, makes test specimen 4, and the shielding line 14 of connection measure traverse line 13 is drawn
Test specimen 4；
2) by 11 uniform winding of coil in coil set 10 on, after by test specimen 4 be positioned over coil set 10 in；
3), after placing explosive chamber 1, fixed support 2 and impact stake 3, locking flange 5, explosive 6 and detonator are opened
7, the bus 8 of connection detonator 7 is drawn and is connected to lighter 9, then, locking flange 3 is sealed locking；
4) coil 11 is connected with power supply 12, shielding line 14 is connected with measuring instrument 15；Digital speckle instrument 16 is set up, and has been led to
Cross data wire 17 and be connected to computer 18；
5) fine status of each connection are checked, 12 are switched on power, measuring instrument 15, digital speckle instrument 16 and computer is opened
18；
6) operation lighter 9 is lighted a fire, and by 7 ignition charge 6 of detonator, Blast Shock is transmitted by impact stake 3
Give test specimen 4；
7) 13 sectioned coil of the record measure traverse line of measuring instrument 15 11 forms the data message of the magnetic line of force, and computer 18 records number
The data message that word speckle instrument 16 is measured, by back analysis and Digital Image Processing, obtains test specimen 4 under Blast Shock
Damage feature.
Finally it should be noted that above content is merely to illustrate technical scheme, rather than to its protection domain
Limited, related amendments or equivalent that those skilled in the art are carried out to the present invention, all without departing from the technology of the present invention side
The effective range of case.
Claims (3)
1. a kind of coal petrography blast impulse damage measure method, it is characterised in that the method concrete steps include：
1) measure traverse line (13) is placed in test specimen (4), makes test specimen (4), and the shielding line of measure traverse line (13) will be connected
(14) test specimen (4) is drawn；
2) by coil (11) uniform winding on coil set (10), after test specimen (4) is positioned in coil set (10)；
3), after placing explosive chamber (1), fixed support (2) and impact stake (3), locking flange (5), explosive (6) are opened
With detonator (7), the bus (8) of connection detonator (7) is drawn and is connected to lighter (9), then, will locking flange (3) sealing
Locking；
4) coil (11) is connected with power supply (12), shielding line (14) is connected with measuring instrument (15)；Digital speckle instrument is set up
(16), and by data wire (17) computer (18) is connected to；
5) fine status of each connection are checked, switch on power (12), opens measuring instrument (15), digital speckle instrument (16) and computer
(18)；
6) operation lighter (9) is lighted a fire, and by detonator (7) ignition charge (6), Blast Shock passes through impact stake (3)
Pass to test specimen (4)；
7) measuring instrument (15) record measure traverse line (13) sectioned coil (11) forms the data message of the magnetic line of force, and computer (18) is remembered
The data message that record digital speckle instrument (16) is measured, by back analysis and Digital Image Processing, obtains test specimen (4) in blast punching
Damage feature under the effect of hitting.
2. a kind of device for realizing coal petrography blast impulse damage measure method described in claim 1, it is characterised in that the device bag
Include explosive chamber (1), fixed support (2), impact stake (3), test specimen (4), locking flange (5), explosive (6), detonator (7), bus
(8), lighter (9), coil set (10), coil (11), power supply (12), measure traverse line (13), shielding line (14), measuring instrument
(15), digital speckle instrument (16), data wire (17), computer (18)；Described explosive chamber (1) is fixed by fixed support (2), fries
Bus (8) manhole appendix is provided with the top of medicine chamber (1)；Described impact stake (3) are located at explosive chamber (1) bottom, and impact stake (3) is entered and fried
Medicine chamber (1)；Described test specimen (4) are located at impact stake (3) below；Described locking flange (5) by ring flange, flexible gasket, bolt and
Nut constitute, and be located at 1/7～1/5 explosive chamber (1) place, by open locking flange (5) explosive (6) and detonator (7) in
In explosive chamber (1)；Described lighter (9) are connected with detonator (7) by bus (8)；Coil set (10) are placed on test specimen (4)
Outward, at least big than test specimen (4) the diameter 2cm of coil set (10) diameter；Coil (11) uniform winding on coil set (10), and
It is connected with power supply (12)；Measure traverse line (13) are placed in test specimen (4)；Shielding line (14) are connected to measure traverse line (13) two
End, and connects measuring instrument (15), and measuring instrument (15) is in order to recording measure traverse line (13) cutting magnetic line information；The digital speckle
Instrument (16) connects computer (18) by data wire (17).
3. a kind of coal petrography blast impulse damage measure device according to claim 2, it is characterised in that the shielding line
(14) constitute by wire and by the screen layer that nonmagnetic substance is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610900421.9A CN106501102A (en) | 2016-10-14 | 2016-10-14 | A kind of coal petrography blast impulse damage measure method and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610900421.9A CN106501102A (en) | 2016-10-14 | 2016-10-14 | A kind of coal petrography blast impulse damage measure method and device |
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| Publication Number | Publication Date |
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| CN106501102A true CN106501102A (en) | 2017-03-15 |
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|---|---|---|---|
| CN201610900421.9A Pending CN106501102A (en) | 2016-10-14 | 2016-10-14 | A kind of coal petrography blast impulse damage measure method and device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4862021A (en) * | 1987-12-10 | 1989-08-29 | Larocca Edward W | Explosively driven power supply |
| CN1888811A (en) * | 2006-07-19 | 2007-01-03 | 中国科学院等离子体物理研究所 | Explosion switch priming device |
| CN101852705A (en) * | 2010-06-18 | 2010-10-06 | 南京理工大学 | Method for evaluating dynamic damage of material under repeated impacts |
| CN203203487U (en) * | 2012-12-31 | 2013-09-18 | 广东宏大爆破股份有限公司 | Device of utilizing detonating pipes to buffer millisecond detonation damping |
| CN105043634A (en) * | 2015-07-09 | 2015-11-11 | 大连理工大学 | Method for measuring detonation pressure of explosive in blast hole |
| CN105352696A (en) * | 2015-11-17 | 2016-02-24 | 北京理工大学 | Downhole string dynamic response test system and test method under explosive blast |
| CN205538785U (en) * | 2016-04-01 | 2016-08-31 | 陈万祥 | Explosion radial motion speed testing arrangement in rock |
-
2016
- 2016-10-14 CN CN201610900421.9A patent/CN106501102A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4862021A (en) * | 1987-12-10 | 1989-08-29 | Larocca Edward W | Explosively driven power supply |
| CN1888811A (en) * | 2006-07-19 | 2007-01-03 | 中国科学院等离子体物理研究所 | Explosion switch priming device |
| CN101852705A (en) * | 2010-06-18 | 2010-10-06 | 南京理工大学 | Method for evaluating dynamic damage of material under repeated impacts |
| CN203203487U (en) * | 2012-12-31 | 2013-09-18 | 广东宏大爆破股份有限公司 | Device of utilizing detonating pipes to buffer millisecond detonation damping |
| CN105043634A (en) * | 2015-07-09 | 2015-11-11 | 大连理工大学 | Method for measuring detonation pressure of explosive in blast hole |
| CN105352696A (en) * | 2015-11-17 | 2016-02-24 | 北京理工大学 | Downhole string dynamic response test system and test method under explosive blast |
| CN205538785U (en) * | 2016-04-01 | 2016-08-31 | 陈万祥 | Explosion radial motion speed testing arrangement in rock |
Non-Patent Citations (1)
| Title |
|---|
| 熊昌彦: "电磁法和压阻法同时测量爆压的探索", 《爆炸与冲击》 * |
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Application publication date: 20170315 |
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