CN104048561B - Explosion cartridge bag and preparation method - Google Patents
Explosion cartridge bag and preparation method Download PDFInfo
- Publication number
- CN104048561B CN104048561B CN201410255791.2A CN201410255791A CN104048561B CN 104048561 B CN104048561 B CN 104048561B CN 201410255791 A CN201410255791 A CN 201410255791A CN 104048561 B CN104048561 B CN 104048561B
- Authority
- CN
- China
- Prior art keywords
- column
- agent
- powder
- gas
- incendiary agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004880 explosion Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 85
- 239000000843 powder Substances 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 239000012188 paraffin wax Substances 0.000 claims abstract description 17
- -1 2 ~ 5 parts Substances 0.000 claims abstract description 6
- 238000002425 crystallisation Methods 0.000 claims description 6
- 230000008025 crystallization Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005422 blasting Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000009931 harmful effect Effects 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 238000005485 electric heating Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000002360 explosive Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000383 hazardous chemical Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018487 Ni—Cr Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present invention relates to a kind of explosion cartridge bag, be made up of incendiary agent, gas-forming agent, heating and unilateral double-pipe.Described heating is embedded in column incendiary agent; Gas-forming agent is filled between incendiary agent and shell.Described incendiary agent is made up of following ingredients and weight portion thereof: 18 ~ 20 parts, Al powder, 80 ~ 88 parts, CuO powder, 2 ~ 5 parts, paraffin.Meanwhile, the invention still further relates to a kind of preparation method of explosion cartridge bag, comprise the steps such as heating making, incendiary agent preparation, gas-forming agent filling, gas-forming agent sealing.The explosion cartridge bag plasting damage effect of gained of the present invention is moderate, make, transport, use safety, without Harmful effects from blasting, be applicable to the explosion of demolition blasting under complex environment and rock.
Description
Technical field
The present invention relates to without explosive blasting cartridge bag, especially a kind of for fragile materials such as explosion and crushing rock, concrete without explosive blasting cartridge bag and preparation method thereof.
Background technology
For overcoming the explosion harm such as attenuation of seismic waves, air-shock wave, Property of Blasting Noise, slungshot and toxic gas that explosive charge brings, generally adopt when environmental requirement is higher static breaking agent to carry out rock, concrete fragmentation construction, greatly can improve the security of construction.But the efficiency of breaking rock of static breaking agent is low, often cause construction speed slow, construction cost increases.
High-energy combustion agent is the class blasting agent made for main component with metal oxide and metallic reducing thing, can meet the requirement reducing explosion harm and improve efficiency of construction two aspect preferably.But still there is following subject matter in it: one is that gas generating amount in incendiary agent product is less, thus lacks expansion work medium, both have impact on demolition effect and too increased blasting cost; Two is hazardous chemicals such as normal use or interpolation manganese dioxide, ammonium nitrate, potassium nitrate, potassium hyperchlorate in some blasting agents, causes all there is certain risk when its production, storage, transport, use.
Summary of the invention
The object of the invention is for Problems existing in prior art, provide that a kind of demolition effect is good, efficiency of breaking rock is high, and not containing safety-type explosion cartridge bag and the preparation method of explosive and hazardous chemical.
For achieving the above object, explosion cartridge bag of the present invention, comprise column charing shell, the column incendiary agent be located in column charing shell, gas-forming agent is filled with between column incendiary agent and column charing shell, be embedded with heating in column incendiary agent, described heating is the U-shaped heating wire that is connected with wire of two ends or electric heating flat filament;
Described incendiary agent is: 18 ~ 20 parts, Al powder, 80 ~ 88 parts, CuO powder, and 2 ~ 5 parts, paraffin, is mixed by weight percentage;
Described gas-forming agent is the KAl (SO that can produce rapidly gas more than 300 DEG C under hot conditions
4)
212H
2o or NH
4al (SO
4)
212H
2o contains crystallization water compound.
Described gas-forming agent loses the temperature of the crystallization water at least higher than paraffin melting point 5 DEG C.
The granularity of described Al powder, CuO powder is below 300 orders, and purity is more than 95%.
The granularity of described gas-forming agent is below 200 orders, and purity is more than 95%.
The present invention uses the preparation method of above-mentioned explosion cartridge bag, comprises the following steps:
A. the two ends of U-shaped heating wire or electric heating flat filament are connected with wire and make heating element heater;
B. take Al powder, CuO powder and paraffin by weight percentage respectively, first Al powder and CuO powder are mixed with ultrasonic blending method, ultrasonic time is no less than 30min; Be that the paraffin of 50-60 DEG C is placed on vessel in heating fusing again by fusing point; Subsequently mixed Al powder and CuO powder powder joined in the paraffin of fusing and stir, making incendiary agent;
C. the incendiary agent not yet solidified is loaded cylindrical mold, insert heating element heater simultaneously, be frozen into after column incendiary agent until it, it is loaded in column charing shell between two parties; The height of described column incendiary agent is lower than column charing outer cover height 5 ~ 10mm, and the diameter of column incendiary agent is less than the internal diameter 6 ~ 8mm of column charing shell;
D. gas generant powder is loaded in the space between column charing shell and column incendiary agent;
E. by the incendiary agent envelope of not yet solidifying, gas-forming agent is completely enclosed within column charing shell, namely completes the making of explosion cartridge bag.
Beneficial effect a: distinguishing feature of the present invention is, containing paraffin in incendiary agent, it can play the effect of binding agent and anti-blushing agent, can reduce the mechanical sensitivity of incendiary agent mixture simultaneously.Another distinguishing feature is, nontoxic steam can be discharged to improve crushing effect under the high temperature action that gas-forming agent in cartridge bag produces at incendiary agent, reduce blasting cost, gas-forming agent is the KAl (SO that can produce rapidly gas more than 300 DEG C under hot conditions simultaneously
4)
212H
2o or NH
4al (SO
4)
212H
2o contains crystallization water compound.Major advantage has:
(1) incendiary agent component is simple, and raw material is extensive;
(2) cartridge bag is not containing explosive and Hazardous Chemical Substances, has lower mechanical sensitivity;
(3) improve the gas expansion for doing work ability in explosion, and gaseous product is nontoxic;
(4) when making, store, transport and use, security is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of explosion cartridge bag of the present invention.
Fig. 2 is embodiments of the invention schematic diagrames.
In figure: 1-column incendiary agent; 2-gas-forming agent; 3-heating; 4-column charing shell; 5-mortar specimen; 6-explosion cartridge bag; 7-stemming; 8-big gun hole; 301-wire; 302-U type electric heating flat filament.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Embodiment 1,
As shown in Figure 1, explosion cartridge bag of the present invention, forms primarily of column incendiary agent 1, gas-forming agent 2, heating 3 and column charing shell 4.Wherein, column charing shell 4 is plastic barrel with cover.Column incendiary agent 1 is located in column charing shell 4, gas-forming agent 2 is filled with between column incendiary agent 1 and column charing shell 4, bury heating 3 in column incendiary agent 1 underground, described heating 3 is the U-shaped heating wire 302 that is connected with wire 301 of two ends or electric heating flat filament;
Described incendiary agent 1 is by weight: 18 parts, Al powder, 88 parts, CuO powder, 2 parts, paraffin mix and makes;
Described gas-forming agent 2 uses KAl (SO
4)
212H
2o powder;
Described gas-forming agent 2 is the KAl (SO that can produce rapidly gas more than 300 DEG C under hot conditions
4)
212H
2o or NH
4al (SO
4)
212H
2o contains crystallization water compound.
Described gas-forming agent 2 loses the temperature of the crystallization water at least higher than paraffin melting point 5 DEG C.
The granularity of described Al powder, CuO powder is below 300 orders, and purity is more than 95%.
The granularity of described gas-forming agent (2) is below 200 orders, and purity is more than 95%.
Explosion cartridge bag preparation method of the present invention, concrete steps are as follows:
(1) the nickel chromium triangle electric heating flat filament doubling of long 10cm, wide 3mm, thick 0.3mm is bent to the U-shaped electric heating flat filament 302 that termination spacing is 10mm, two ends is welded the copper conductor 301 of long 1000mm respectively, makes heating element heater 3;
(2) take 400 object Al powder and 400 order CuO powder respectively by above-mentioned percentage by weight, adopt ultrasonic blending method to be mixed, ultrasonic time is no less than 30min;
(3) take by above-mentioned percentage by weight the paraffin that fusing point is about 55 DEG C, after heated at constant temperature makes it to melt completely to 60 DEG C in a reservoir, the Al/CuO powder after blended is added wherein, stirs at 60 DEG C, make incendiary agent;
(4) incendiary agent not yet solidified is loaded the cylindrical steel molding jig of internal diameter 20mm, long 100mm, insert heating element heater by incendiary agent compacting simultaneously, to be combusted dose solidify completely after, loaded in the plastic barrel of external diameter 32mm, internal diameter 30mm, long 110mm;
(5) between unilateral double-pipe 4 and incendiary agent powder column 1,200 object KAl (SO are loaded
4)
212H
2o powder;
(6) with the incendiary agent not yet solidified, shell is filled up again, make KAl (SO
4)
212H
2o powder is completely enclosed, and is drawn and the cartridge bag that gets product after covering tightly by wire from the aperture the top cover of unilateral double-pipe 4.
The explosion cartridge bag 6 obtained of institute's embodiment 1 gained is carried out explosion and crushing experiment.Employing cylinder grade is the cement mortar specimen 5 of M15, is of a size of
.On test specimen, a reserved centre bore 8 is for powder charge, centre bore aperture 38mm, hole depth 210mm.
As shown in Figure 2, the explosion cartridge bag of embodiment 1 gained is put into big gun hole 8, with stemming 100mm aperture section stemming 7 jam-pack above cartridge bag, then wire is connected on 220V light conduits.After switching on power, cartridge bag is accurately ignited, and sends the overcast sound.Observe and find, test specimen is crushed into fragment not of uniform size, and maximum crumb size is 18mm, maximum casting distance 1.8m.
Embodiment 2,
Explosion cartridge bag of the present invention, substantially identical with embodiment one, identical part slightly.Form primarily of incendiary agent 1, gas-forming agent 2, heating 3 and unilateral double-pipe 4.
Described incendiary agent 1 is by weight: 20 parts, Al powder, 82 parts, CuO powder, 5 parts, paraffin mix and makes; Gas-forming agent 2 is KAl (SO
4)
212H
2o; Unilateral double-pipe 4 is plastic barrel with cover.
This explosion cartridge bag preparation method, with embodiment one unlike:
The first, in step (4), the internal diameter of cylindricality steel die is 18mm;
The second, gas-forming agent 2 have employed 250 object KAl (SO
4)
212H
2o powder;
All the other are made into explosion cartridge bag by the step identical with embodiment 1.
The explosion cartridge bag 6 of embodiment 2 gained is carried out explosion and crushing experiment.Sample dimensions parameter, blast hole parameter and method for sealing are all identical with embodiment 4.
After cartridge bag is detonated, send the very little sound, after test specimen fragmentation, crumb size is comparatively large, and mainly define three bulks, substantially do not have throwing, residual blasthole hole wall has moist vestige slightly.
Embodiment 3,
Explosion cartridge bag of the present invention, substantially identical with embodiment one, identical part slightly.Master is made up of incendiary agent 1, gas-forming agent 2, heating 3 and unilateral double-pipe 4.
Described incendiary agent 1 is by weight: 19 parts, Al powder, 85 parts, CuO powder, 3 parts, paraffin mix and makes; Gas-forming agent 2 is NH
4al (SO
4)
212H
2o; Unilateral double-pipe 4 is plastic barrel with cover.
This explosion cartridge bag preparation method is substantially the same manner as Example 1, and difference is:
The first, in step (4), the internal diameter of cylindricality steel die is 22mm;
The second, gas-forming agent 2 have employed 250 object NH
4al (SO
4)
212H
2o powder.
All the other are made into explosion cartridge bag by the step identical with embodiment 1.
The explosion cartridge bag 6 of embodiment 3 gained is carried out explosion and crushing experiment.Sample dimensions parameter, blast hole parameter and method for sealing are all identical with embodiment 4.
After cartridge bag is detonated, send the less sound, test specimen degree of crushing is higher, and maximum crumb size is 12mm, maximum casting distance 2.3m.
Such as adoptable following reaction
KAl (SO
4)
212H
2o (more than 200 DEG C high temperature) → KAl (SO
4)
2+ 12H
2o ↑.
Claims (2)
1. an explosion cartridge bag, comprise column charing shell (4), the column incendiary agent (1) be located in column charing shell (4), it is characterized in that: between described column incendiary agent (1) and column charing shell (4), be filled with gas-forming agent (2), heating (3) is embedded with, the U-shaped heating wire that described heating (3) is connected with wire for two ends in column incendiary agent (1); The height of described column incendiary agent (1) is lower than column charing shell (4) height 5 ~ 10mm, and the diameter of column incendiary agent (1) is less than the internal diameter 6 ~ 8mm of column charing shell (4);
Described column incendiary agent (1) is: 18 ~ 20 parts, Al powder, 80 ~ 88 parts, CuO powder, and 2 ~ 5 parts, paraffin, is mixed by weight;
Described gas-forming agent (2) is the KAl (SO that can produce rapidly gas more than 300 DEG C under hot conditions
4)
212H
2o or NH
4al (SO
4)
212H
2o;
Described gas-forming agent (2) loses the temperature of the crystallization water at least higher than paraffin melting point 5 DEG C;
The granularity of described Al powder, CuO powder is below 300 orders, and purity is more than 95%;
The granularity of described gas-forming agent (2) is below 200 orders, and purity is more than 95%.
2. a preparation method for explosion cartridge bag according to claim 1, is characterized in that, comprise the following steps:
A. the two ends of U-shaped heating wire are connected with wire and make heating (3);
B. take Al powder, CuO powder and paraffin by weight respectively, first Al powder and CuO powder are mixed with ultrasonic blending method, ultrasonic time is no less than 30min; Be that the paraffin of 50-60 DEG C is placed on vessel in heating fusing again by fusing point; Subsequently mixed Al powder and CuO powder powder joined in the paraffin of fusing and stir, making incendiary agent;
C. the incendiary agent not yet solidified is loaded cylindrical mold, insert heating (3) simultaneously, be frozen into after column incendiary agent (1) until it, it is loaded in column charing shell (4) between two parties; The height of described column incendiary agent (1) is lower than column charing shell (4) height 5 ~ 10mm, and the diameter of column incendiary agent (1) is less than the internal diameter 6 ~ 8mm of column charing shell (4);
D. gas-forming agent (2) powder is loaded in the space between column charing shell (4) and column incendiary agent (1);
E. with the incendiary agent not yet solidified, gas-forming agent (2) is completely enclosed within column charing shell (4), namely completes the making of explosion cartridge bag.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410255791.2A CN104048561B (en) | 2014-06-10 | 2014-06-10 | Explosion cartridge bag and preparation method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410255791.2A CN104048561B (en) | 2014-06-10 | 2014-06-10 | Explosion cartridge bag and preparation method |
Publications (2)
Publication Number | Publication Date |
---|---|
CN104048561A CN104048561A (en) | 2014-09-17 |
CN104048561B true CN104048561B (en) | 2016-01-27 |
Family
ID=51501728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410255791.2A Expired - Fee Related CN104048561B (en) | 2014-06-10 | 2014-06-10 | Explosion cartridge bag and preparation method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN104048561B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105806164B (en) * | 2016-04-08 | 2017-10-27 | 李学智 | Heat energy rock cleavage crush method |
CN107884104A (en) * | 2017-12-29 | 2018-04-06 | 吉林大学 | A kind of test device and method of ultrasonic activation detritus Effective power |
CN111472773B (en) * | 2020-04-14 | 2021-12-07 | 西安闪光能源科技有限公司 | Composite liquid rock breaking rod for generating controllable shock waves and manufacturing method thereof |
CN111472771A (en) * | 2020-04-14 | 2020-07-31 | 西安闪光能源科技有限公司 | Liquid rock breaking rod for generating shock waves and manufacturing method thereof |
CN111472774B (en) * | 2020-04-14 | 2021-12-07 | 西安闪光能源科技有限公司 | Composite rock breaking rod for generating controllable shock waves and manufacturing method thereof |
CN111472772A (en) * | 2020-04-14 | 2020-07-31 | 西安闪光能源科技有限公司 | Rock breaking rod for generating shock waves and manufacturing method thereof |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3618520A (en) * | 1969-02-04 | 1971-11-09 | Asahi Chemical Ind | Method of cracking concrete |
DE2233107C3 (en) * | 1972-07-06 | 1979-12-13 | Thiokol Chemical Corp., Bristol, Pa. (V.St.A.) | Use of copper-II-oxalate or aluminum chloride hexahydrate to cool hot gases |
JPS5069211A (en) * | 1973-10-19 | 1975-06-10 | ||
JP2702716B2 (en) * | 1987-06-22 | 1998-01-26 | 日本工機株式会社 | Crushing composition |
US4963203A (en) * | 1990-03-29 | 1990-10-16 | The United States Of America As Represented By The United States Department Of Energy | High- and low-temperature-stable thermite composition for producing high-pressure, high-velocity gases |
KR100829918B1 (en) * | 2006-06-14 | 2008-05-16 | 주식회사 플라즈마토건 | A termite cartridge apparatus using strip |
-
2014
- 2014-06-10 CN CN201410255791.2A patent/CN104048561B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN104048561A (en) | 2014-09-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104048561B (en) | Explosion cartridge bag and preparation method | |
Jang et al. | Effects of water deck on rock blasting performance | |
CN102432409B (en) | High-density high-explosion-speed water gel explosive seismic charge and preparation method thereof | |
CN102564252A (en) | Combined gun blocking device | |
CN102278920A (en) | Non-primary explosive detonator | |
CN111472772A (en) | Rock breaking rod for generating shock waves and manufacturing method thereof | |
US9828303B1 (en) | High brisance metal powder explosive | |
JP5000217B2 (en) | Method and apparatus for crushing rocks and structures | |
US20070107820A1 (en) | Gas-generating compositions, fracturing system and method of fracturing material | |
US3618520A (en) | Method of cracking concrete | |
JP2008014584A (en) | Filling method for crushing cartridge | |
CN105115364A (en) | High-energy detonation tool assembled through obsolete propellant and assembling process of high-energy detonation tool | |
CN103591860A (en) | Water coupling gunpowder filling and ignition method for improving small-particle-size material content of rock-fill dam transition material | |
CN105016931B (en) | A kind of high temperature resistant explosive production method containing heat absorption material | |
CN105043180B (en) | A kind of explosion method fast blocking-up device | |
CN104897015B (en) | Hole filling method by blasting | |
CN204082108U (en) | Double-deck shell case petroleum perforation charge | |
CN111472774B (en) | Composite rock breaking rod for generating controllable shock waves and manufacturing method thereof | |
CN103193565B (en) | Porous granulated ammonium oil explosive and preparation method thereof | |
KR101413292B1 (en) | Rapid Stemming Material used in Short Borehole for Concrete Structure Demolition and Blasting Demolition Method Using the Same | |
RU93965U1 (en) | EXPLOSION CHARGE | |
CN206321142U (en) | A kind of novel emulsion explosive cumulative powder stick | |
CN110631424A (en) | Detonator type miniature explosive package | |
CN110763093A (en) | DNA double helix type shooting and blasting integrated medium-length hole blasting device | |
CN113134603B (en) | Formula for shaped charge liner and perforating bullet for fracturing jet flow duct of oil and gas well |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160127 |