CN106969897A - The equivalent loading experimental apparatus of material underwater blast wave impact compress can be achieved - Google Patents
The equivalent loading experimental apparatus of material underwater blast wave impact compress can be achieved Download PDFInfo
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- CN106969897A CN106969897A CN201710168156.4A CN201710168156A CN106969897A CN 106969897 A CN106969897 A CN 106969897A CN 201710168156 A CN201710168156 A CN 201710168156A CN 106969897 A CN106969897 A CN 106969897A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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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
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/50—Systems of measurement based on relative movement of target
- G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
Abstract
The invention discloses a kind of equivalent loading experimental apparatus of achievable material underwater blast wave impact compress.Mainly include emission system, velocity-measuring system, water tank system, hydraulic system, measuring system totally five parts.Emission system is horizontally disposed in yi word pattern with water tank system, and the emission system transmitting mouth of pipe is relative with high pressure water tank head port, and velocity-measuring system is arranged on the transmitting mouth of pipe, and water tank system body part includes two water tanks and a transmission bar.Using projectile impact water tank system, the kinetic energy of bullet can be converted into the energy of shock wave in water tank.The present invention can obtain the explosion wave under a variety of depth of water environment under the conditions of without using explosive, the dynamic impact compression mechanical behavior analysis under the underwater blast wave effect to multiple material can be completed simultaneously, it is safe with repeatable strong, experimental cost is low, simple operation and other advantages.
Description
Technical field
The present invention relates to one kind blast and shock dynamics experimental provision, produced especially by hitting under equivalent water
The experimental provision of blast impulse wave load and its lower test material dynamic impact compression mechanical property of effect.
Background technology
Offshore engineering structure generally works under the adverse circumstances such as seawater corrosion, high/low temperature, transient impact load, bears
Dominating impact load includes collision, the effect of three dimensional fluid load etc..In addition, ship structure is also faced with weapon strike threat, it must answer
To coming from the water surface and Explosion Loading under water.At present, acted on for underwater blast wave on marine structure
Experimental study is less, but mainly carries out analog study using finite element emulation softwares such as ABAQUS, LS-DYNA, AUTODYN,
Due to lacking necessary experimental verification it is difficult to the accuracy of certifying software emulation.Thus, study ocean structure by laboratory facilities
The lower shock resistance of blast impulse wave load effect is acted on and is particularly important under water for thing and material.Existing laboratory facilities are concentrated
Explosion test and the experiment of equivalent target plate in pond, because poor controllability, the efficiency of traditional explosion test are low, cost is high, dangerous system
The shortcomings of counting high, high to experimental situation requirement, designs a kind of the equivalent of achievable material underwater blast wave impact compress and adds
Experimental provision and its method of testing are carried by with important engineering significance.
At present, the research of the equivalent loading experimental apparatus of related underwater explosion is relatively fewer at home and abroad.Northwestern Univ USA
Direct collision was have studied in 2006 and turns the stretched duct test honeycomb sandwich composite plate system of pulse in water.2010,
The research direct collision of georgia ,U.S.A Polytechnics turns pulse in water and tests interlayer composite panel system through uiform section duct.State
Interior, it is real that Beijing Institute of Technology, Harbin Institute of Technology, Institutes Of Technology Of Nanjing had carried out the equivalent loading of underwater explosion respectively in recent years
The design and research of experiment device, makes some progress.
The content of the invention
It can be realized in the case of without using explosive under a variety of depth of water environment it is an object of the invention to provide a kind of
The equivalent loading of underwater blast wave, can be achieved to the dynamic impact compression mechanics row under multiple material underwater explosion percussion
For the equivalent loading experimental apparatus of the achievable material underwater blast wave impact compress of research.
The object of the present invention is achieved like this：
Comprising emission system, velocity-measuring system, water under high pressure cabin system, measuring system and hydraulic system,
The emission system includes transmitting tube and the plenum chamber positioned at transmitting tube front end,
The water under high pressure cabin system includes experiment water tank, axially loaded water tank, transmission bar, barrier sheet, experiment water tank and axle
Connected between loading water tank by press-in connection bar, be provided with experiment water tank experiment water tank air vent, experiment water tank water filling port,
Axially loaded water tank water filling port, axially loaded water tank air vent are provided with impact wave measurement device installing port, axially loaded water tank,
Barrier sheet is arranged on experiment water tank front end, and the front end of transmission bar stretches into experiment water tank, rear end and stretches into axially loaded water tank, waits to measure and monitor the growth of standing timber
Expect that sample is arranged on the front end of transmission bar,
The measuring system includes foil gauge, high frequency piezo sensor, signal amplification processor, dynamic strain indicator, oscillography
Device, computer, high frequency piezo sensor are arranged in impact wave measurement device installing port and by signal transmssion line by electric signal
Be transferred to signal amplification amplifier, signal amplification processor by data line by the electric signal transmission after processing to calculating
Machine, strain gauge adhesion is on transmission bar, and foil gauge is connected to dynamic strain indicator by lead, and dynamic strain indicator passes through data cube computation
Line connects computer,
The hydraulic system includes low pressure tank, changes depressor and oil pump, and low pressure tank is by the first high-pressure water pipe and changes pressure
Device is connected, and changes depressor and is connected by the second high-pressure water pipe with experiment water tank water filling port and axially loaded water tank water filling port, changes depressor
Oil pump is connected by high-pressure oil pipe,
The emission system is horizontally disposed in yi word pattern with water tank system, that is, launches pipe port and experiment water tank front end phase
Right, laser velocimeter system is fixedly mounted on transmitting tube wall rear end.
The present invention can also include：
1st, the velocity-measuring system includes two generating lasers, two laser pickoffs and laser velocimeter, and two are swashed
Optical transmitting set horizontal Tile is placed and fixed, and two laser pickoffs and two generating lasers are staggered relatively and be fixed on transmitting
Tube wall rear end.
2nd, a generating laser and a laser pickoff constitute one group of laser, and the parallel spacing of two groups of lasers is
50mm-100mm。
3rd, the front end of experiment water tank sets mounting flange, and the rear end of axially loaded water tank sets fixed mass block, and pressure connects
Extension bar is connected between mounting flange and fixed mass block.
The present invention is directed to the limitation and measuring technology of the existing related equivalent loading experiment equipment of underwater blast wave
Not enough problem, it is proposed that a kind of equivalent loading experimental apparatus of achievable material underwater blast wave impact compress, not
In the case of using explosive, the equivalent loading of underwater blast wave under a variety of depth of water environment can be realized, is launched by changing
The bullet velocity of system, can change underwater blast wave crest value, while the invention device can be also realized to various new material
Expect the dynamic impact compression mechanical behavior research under underwater explosion percussion.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention has significantly compared to other existing related inventions
Technological improvement and lifting.Present system mainly include emission system, velocity-measuring system, water under high pressure cabin system, measuring system and
The big major part of hydraulic system etc. five.Oil pump and change the devices such as depressor due to adding so that present system can without using
The equivalent loading of explosion wave under a variety of depth of water environment is realized in the case of explosive, by the design of two water tanks, can make to treat
Material sample pressure at both sides balance is surveyed, so as to realize under a variety of depth of water environment under the equivalent loading of underwater blast wave and its effect
To the experimental study of the dynamic impact compression of material.The present invention have have a wide range of application, it is workable, safe, can weigh
Renaturation is strong, the low advantage of experimental cost.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram for the experimental provision invented.
Fig. 2 is emission system structural representation.
Fig. 3 is velocity-measuring system structural representation.
Fig. 4 is water tank system structure diagram.
Fig. 5 is measuring system structural representation.
Fig. 6 is hydraulic system structure schematic diagram.
Embodiment
The invention will be further described for citing below in conjunction with the accompanying drawings.
With reference to Fig. 1, test system of the invention includes emission system 1, velocity-measuring system 2, water under high pressure cabin system 3, measurement system
System 4 and the big major part of the grade of hydraulic system 5 five.The emission system is horizontally disposed in yi word pattern with water tank system, loading system
System transmitting pipe port is relative with experiment water tank head port, and laser velocimeter system is fixedly mounted on transmitting tube wall terminal position.Institute
Water tank system is stated to be fixedly mounted on cement base by multiple ring support levels.
With reference to Fig. 2, emission system includes plenum chamber 1-1, trigger switch 1-2, bullet 1-3, transmitting tube 1-4, gas
The parts such as chamber pressure table 1-5, air chamber pressure table is arranged on high pressure gas locular wall, is connected with air chamber, transmitting tube closely connects high pressure
Air chamber, bullet is arranged in transmitting tube, and bullet diameters are equal with transmitting bore.
With reference to Fig. 3, velocity-measuring system include the 2-1 of generating laser one, the 2-2 of generating laser two, the 2-3 of laser pickoff one,
The parts such as the 2-4 of laser pickoff two, laser velocimeter 2-5, laser velocimeter display 2-6, laser velocimeter zero setting key 2-7,
Two generating laser horizontal Tiles are placed and fixed, and two laser pickoffs and two generating lasers are staggered relatively and fixed
In transmitting tube wall terminal position, the parallel spacing of two groups of lasers is 50mm-100mm.
With reference to Fig. 4, water under high pressure cabin system includes experiment water tank air vent 3-1, the 3-2 of stop valve one, experiment water tank water filling port
3-3, the 3-4 of impact wave measurement device installing port one, the 3-5 of impact wave measurement device installing port two, detected materials sample 3-6, transmission
Bar 3-7, axially loaded water tank water filling port 3-8, axially loaded water tank air vent 3-9, the 3-10 of stop valve two, fixed mass block 3-
11st, axially loaded water tank 3-12, " O " type rubber seal 3-13, foil gauge 3-14, press-in connection bar 3-15, " O " type rubber are close
The parts such as packing 3-16, experiment water tank 3-17, mounting flange 3-18, barrier sheet 3-19；Water tank system is by multiple ring support water
It is flat to be fixedly mounted on cement base, provided with two impact wave measurement device installing ports, a deflation on experiment water tank bulkhead
A stop valve is disposed with hole and a water filling port, air vent, high pressure water tank is that (external diameter is 500mm to grade outer diameter cylindrical pipe, length
For 3000mm), it is 100mm in barrier sheet inner end diameter, long 200mm, interlude internal diameter is 60mm, and length is 2300mm, to be measured
Material sample end internal diameter is 80mm, long 500mm；Tried with detected materials a diameter of 80mm of transmission bar, a length of 3000mm, one end
Sample is in close contact, and the other end is in axially loaded water tank, and transmission bar is circumferentially with a groove in axially loaded water tank, for pacifying
" O " type rubber seal is filled, sealing function is played；The axially loaded water tank internal diameter is 80mm, and external diameter is 500mm, a length of
1000mm equal diameter pipe, is provided with an air vent and a water filling port, air vent on its bulkhead and is disposed with a cut-off
Valve；The mounting flange, its internal diameter is 75mm, is connected by four press-in connection bars with tail end fixed mass block；It is described to stop
The a diameter of 100mm of piece, a groove is circumferentially with it, for installing " O " type rubber seal, plays sealing function；Described section
Only valve is arranged on the air vent of two water tanks, is in closed mode after water tank fills water；The detected materials sample transmission bar is tight
It is close to be arranged on high pressure water tank tail end, and " O " type rubber gasket is installed in sheet coupon and high pressure water tank contact position, play sealing
Effect.
With reference to Fig. 5, measuring system includes signal amplification processor 4-1, computer 4-2, dynamic strain indicator 4-3, oscillograph
The parts such as 4-4；High frequency piezo sensor is installed tightly in impact wave measurement device installing port, and by signal transmssion line by electricity
Signal is transferred to signal amplification amplifier, then by signal amplifier to signal enhanced processing, and then passes through data line
By the electric signal transmission after processing to computer, the equivalent punching in high pressure water tank at different measuring points can be drawn by computer disposal
Pressure of hammer wave time-history curves；Dynamic strain indicator can obtain the strained situation for the foil gauge being pasted onto on transmission bar simultaneously, by showing
Ripple device can obtain waveform on transmission bar；Equivalent underwater blast wave in experiment water tank can be obtained by high frequency piezo sensor,
Transmitted wave waveform on transmission bar can be obtained by foil gauge on transmission bar, using one-dimensional elastic wave on two media interface
Transmission theory can obtain stress response of the detected materials under the effect of equivalent underwater blast wave dynamic impulsion.
With reference to Fig. 6, hydraulic system includes low pressure tank 5-1, the 5-2 of stop valve three, the 5-3 of high-pressure water pipe one, high-pressure water pipe two
5-4, the 5-5 of stop valve four, change the parts such as depressor 5-6, high-pressure oil pipe 5-7, oil pump 5-8, water tank pressure gauge 5-9, the low pressure water
Case changes depressor top by the connection of high-pressure water pipe one, and depressor top, other end connection high pressure water tank are changed in the connection of the one end of high-voltage tube two
Water filling port, the high-pressure oil pipe connects oil pump and changes depressor bottom, and one is respectively provided with high-voltage tube one and high-voltage tube two and is cut
Only valve, installs a pressure gauge in high-pressure water pipe two.
Present invention additionally comprises some such features：
1. emission system neutron bomb can select the materials such as foamed aluminium, steel alloy, aluminium, barrier sheet and transmission bar close for high intensity
Jin Gang, the bullet diameters are 60mm with experiment water tank interlude internal diameter, and mounting flange internal diameter is 75mm, straight more than bullet
Footpath.
2. described in experiment test system mesohigh water pipe, high-pressure oil pipe, air vent be high pressure steel wire spiral rubber hose, can hold
By 30MP maximum pressure.
3. apparatus of the present invention can simulate the quiet of different water depth by hydraulic pressure (0-30MP) in regulation of hydraulic system high pressure water tank
Hydraulic pressure environment, so as to realize a kind of equivalent loading of explosion wave under many depth of waters (0-3000m) environment and under the effect
Research to the dynamic impact compression mechanical property of different materials.
Utilize the specific implementation step of the novel test method of the equivalent loading experimental apparatus of underwater blast wave of the present invention
Suddenly it is：
(1) when using apparatus of the present invention, first on the transmission bar 3-7 and barrier sheet 3-19 for having pasted foil gauge 3-14
" O " type rubber seal 3-13 is installed, then " O " type rubber gasket 3-16 is installed, and be fixedly mounted and treat with transmission bar 3-7
Test specimens sheet material 3-6, mounting flange 3-18 and fixed mass block 3-11 are fixedly connected with by press-in connection bar 3-15.
(2) 3-2 of stop valve one, the 3-10 of stop valve two, the 5-2 of stop valve three and the 5-5 of stop valve four are opened, to experiment water tank 3-
Water filling in 15 and axially loaded water tank 3-12, examination is excluded by testing water tank air vent 3-1 and axially loaded water tank air vent 3-9
The air tested in water tank 3-15 and axially loaded water tank 3-12, and in two exhaust outlet drainings, close the 3-2 of stop valve one, cut-off
The 3-10 of the valve two and 5-2 of stop valve three, water tank 3-15 and axially loaded water are tested by oil pump 5-8 to depressor 5-6 oilings, increase is changed
Hydraulic pressure in the 3-12 of cabin, observes water tank pressure gauge 5-9, when pressure value reaches experiment desirable value, closes the 5-5 of stop valve four.
(3) opening signal amplification processor 4-1, computer 4-2, dynamic strain indicator 4-3, oscillograph 4-4, adjust high pressure gas
Air pressure in the 1-1 of room, transmitting tube 1-4 inner terminals are pushed into by bullet 1-3.
(4) velocity-measuring system 2 is connected into power supply and opened, press laser velocimeter zero setting key 2-7, open emission system 1
Trigger switch 1-2 is tested.
(5) time on recording laser tachymeter display 2-6, by signal amplification processor 4-1, dynamic strain indicator 4-3,
The signal transacting that computer 4-2 is collected to high frequency piezo sensor and foil gauge 3-14, draws out the stress wave waveform at measuring point
Curve.
(6) bullet 1-2 is put back into transmitting tube 1-3, opens the 5-5 of stop valve four, by changing depressor 5-6 reduction experiment water tanks 3-
Hydraulic pressure in 15 and axially loaded water tank 3-12, opens the 3-2 of the stop valve one and 3-10 of stop valve two, removes mounting flange 3-18, resistance
Catch 3-19, " O " type rubber seal 3-13, transmission bar 3-7, sample to be tested sheet material 3-6 and " O " type rubber gasket 3-16,
Shutdown signal amplification processor 4-1, computer 4-2, dynamic strain indicator 4-3, oscillograph 4-4, laser velocimeter 2-5, disconnect institute
There is power supply.
Above content is only the preferable case study on implementation of the present invention, for those skilled in the art, according to this
The thought of invention, can there is change part in specific embodiments and applications, and this specification content should not be construed as pair
The limitation of the present invention.
Claims (4)
1. a kind of equivalent loading experimental apparatus of achievable material underwater blast wave impact compress, comprising emission system, is surveyed
Speed system, water under high pressure cabin system, measuring system and hydraulic system, it is characterized in that：
The emission system includes transmitting tube and the plenum chamber positioned at transmitting tube front end,
The water under high pressure cabin system includes experiment water tank, axially loaded water tank, transmission bar, barrier sheet, and experiment water tank is with axially adding
Connected between load water tank by press-in connection bar, experiment water tank air vent, experiment water tank water filling port, impact are provided with experiment water tank
Axially loaded water tank water filling port, axially loaded water tank air vent are provided with wave measuring apparatus installing port, axially loaded water tank, is stopped
Piece is arranged on experiment water tank front end, and the front end of transmission bar stretches into experiment water tank, rear end and stretches into axially loaded water tank, detected materials examination
Sample is arranged on the front end of transmission bar,
The measuring system includes foil gauge, high frequency piezo sensor, signal amplification processor, dynamic strain indicator, oscillograph, meter
Calculation machine, high frequency piezo sensor is arranged in impact wave measurement device installing port and is arrived electric signal transmission by signal transmssion line
Signal amplifies amplifier, and signal amplification processor, by the electric signal transmission after processing to computer, is strained by data line
Piece is pasted onto on transmission bar, and foil gauge is connected to dynamic strain indicator by lead, and dynamic strain indicator is connected by data connecting line
Computer,
The hydraulic system includes low pressure tank, changes depressor and oil pump, and low pressure tank is by the first high-pressure water pipe with changing depressor phase
Even, change depressor by the second high-pressure water pipe with experiment water tank water filling port and axially loaded water tank water filling port to be connected, change depressor and pass through
High-pressure oil pipe connects oil pump,
The emission system is horizontally disposed in yi word pattern with water tank system, i.e., transmitting pipe port is relative with experiment water tank front end, swashs
Flash ranging speed system is fixedly mounted on transmitting tube wall rear end.
2. the equivalent loading experimental apparatus of achievable material underwater blast wave impact compress according to claim 1,
It is characterized in that：The velocity-measuring system includes two generating lasers, two laser pickoffs and laser velocimeter, two laser
Transmitter horizontal Tile is placed and fixed, and two laser pickoffs and two generating lasers are staggered relatively and be fixed on transmitting tube
Wall rear end.
3. the equivalent loading experimental apparatus of achievable material underwater blast wave impact compress according to claim 2,
It is characterized in that：One generating laser and a laser pickoff constitute one group of laser, and the parallel spacing of two groups of lasers is
50mm-100mm。
4. the equivalent loading experiment of the achievable material underwater blast wave impact compress according to claim 1,2 or 3
Device, it is characterized in that：The front end for testing water tank sets mounting flange, and the rear end of axially loaded water tank sets fixed mass block, pressure
Power connecting rod is connected between mounting flange and fixed mass block.
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| CN201710168156.4A CN106969897B (en) | 2017-03-21 | 2017-03-21 | Equivalent loading experimental device capable of realizing underwater explosion shock wave shock compression of material |
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| CN201710168156.4A CN106969897B (en) | 2017-03-21 | 2017-03-21 | Equivalent loading experimental device capable of realizing underwater explosion shock wave shock compression of material |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362584A (en) * | 2018-03-14 | 2018-08-03 | 中国人民解放军61489部队 | The shock tube experiment device of blast off phenomenon Combined Loading in a kind of water |
| CN108375513A (en) * | 2018-01-23 | 2018-08-07 | 中国石油大学(华东) | A kind of perforating job broken rock experimental method |
| CN109323917A (en) * | 2018-10-15 | 2019-02-12 | 西安交通大学 | The experimental system and method for simulated explosion shock wave and single fragmentation combined load |
| CN109738156A (en) * | 2019-01-22 | 2019-05-10 | 浙江大学 | Shell structure object and sea bed power collision test device in orientable simulation deep-sea |
| CN109738155A (en) * | 2019-01-22 | 2019-05-10 | 浙江大学 | One kind is for simulating shell structure object and sea bed power collision test device in deep-sea |
| CN110057530A (en) * | 2019-05-28 | 2019-07-26 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | A kind of assembled orifice structure incident blast surge test cabin |
| CN112229557A (en) * | 2020-09-14 | 2021-01-15 | 中国石油天然气股份有限公司 | Detonator axial output pressure testing assembly with connecting pipe |
| CN112461040A (en) * | 2020-11-07 | 2021-03-09 | 南京理工大学 | Water target way is gun position segmentation structure under water |
| CN112858048A (en) * | 2021-01-19 | 2021-05-28 | 昆明理工大学 | Dynamic mechanical property testing device for blast hole filler and using method thereof |
| CN113670552A (en) * | 2021-08-19 | 2021-11-19 | 中国矿业大学 | Non-explosive type blasting impact equivalent loading device and rock mass fracture monitoring method |
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| CN108375513A (en) * | 2018-01-23 | 2018-08-07 | 中国石油大学(华东) | A kind of perforating job broken rock experimental method |
| CN108362584A (en) * | 2018-03-14 | 2018-08-03 | 中国人民解放军61489部队 | The shock tube experiment device of blast off phenomenon Combined Loading in a kind of water |
| CN108362584B (en) * | 2018-03-14 | 2023-09-01 | 中国人民解放军61489部队 | Shock tube experimental device for composite loading of impact explosion in water |
| CN109323917A (en) * | 2018-10-15 | 2019-02-12 | 西安交通大学 | The experimental system and method for simulated explosion shock wave and single fragmentation combined load |
| US11346746B2 (en) | 2019-01-22 | 2022-05-31 | Zhejiang University | Testing apparatus for directional simulation of dynamic collision between deep-sea shell structure and seabed |
| CN109738156A (en) * | 2019-01-22 | 2019-05-10 | 浙江大学 | Shell structure object and sea bed power collision test device in orientable simulation deep-sea |
| CN109738155A (en) * | 2019-01-22 | 2019-05-10 | 浙江大学 | One kind is for simulating shell structure object and sea bed power collision test device in deep-sea |
| CN110057530A (en) * | 2019-05-28 | 2019-07-26 | 中国人民解放军军事科学院国防工程研究院工程防护研究所 | A kind of assembled orifice structure incident blast surge test cabin |
| CN112229557A (en) * | 2020-09-14 | 2021-01-15 | 中国石油天然气股份有限公司 | Detonator axial output pressure testing assembly with connecting pipe |
| CN112461040B (en) * | 2020-11-07 | 2022-06-28 | 南京理工大学 | Water target way is gun position sectional structure under water |
| CN112461040A (en) * | 2020-11-07 | 2021-03-09 | 南京理工大学 | Water target way is gun position segmentation structure under water |
| CN112858048A (en) * | 2021-01-19 | 2021-05-28 | 昆明理工大学 | Dynamic mechanical property testing device for blast hole filler and using method thereof |
| CN112858048B (en) * | 2021-01-19 | 2022-10-28 | 昆明理工大学 | Dynamic mechanical property testing device for blast hole filler and using method thereof |
| CN113670552A (en) * | 2021-08-19 | 2021-11-19 | 中国矿业大学 | Non-explosive type blasting impact equivalent loading device and rock mass fracture monitoring method |
| CN113670552B (en) * | 2021-08-19 | 2022-04-05 | 中国矿业大学 | Non-explosive type blasting impact equivalent loading device and rock mass fracture monitoring method |
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