CN102432409A - High-density high-explosion-speed water gel explosive seismic charge and preparation method thereof - Google Patents
High-density high-explosion-speed water gel explosive seismic charge and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a high-density high-explosion-speed water gel explosive seismic charge and a preparation method thereof. The high-density water gel explosive in the seismic charge comprises a high energy additive which comprises, by weight, 46-60 parts of paint grade aluminum powder, 31-40 parts of ferrosilicon powder, 4-6 parts of liquid paraffin and 5-8 parts of turpentine. The paint grade aluminum powder and the ferrosilicon powder are added to a mixed solution of the liquid paraffin and turpentine to prepare the high energy additive. The preparation method comprises the following steps: sequentially adding a monomethylamine nitrate solution, ethylenediamine dinitrate, ammonium nitrate and an antifreeze agent under low speed stirring, controlling the temperature at 55-75DEG C, adding a mixture of sodium nitrate and Sesbania cannabina Pers powder, a crosslinking agent and the high energy additive, mixing to prepare the high-density water gel explosive, loading the high-density water gel explosive into a seismic charge housing inserted with a common detonating cord, and sealing to obtain the high-density water gel explosive seismic charge. The high-density water gel explosive seismic charge has the advantages of no containment of toxic substances of TNT and the like, high density, high explosion speed, large unit volume power, safety and environmental protection, certain pressure resistance and antifreeze performance, and simple preparation method.
Description
Technical field
The present invention relates to the high explosion velocity water gel explosive of a kind of high-density explosive-source explosive post and preparation method thereof, particularly a kind of high explosion velocity explosive-source explosive post of high-density that is used for oil, coal seismic prospecting and preparation method thereof.
Background technology
In oil and coal seismic prospecting, explosive-source explosive post explodes in exciting media and forms seismic wave.Seismic wave runs into the different geological interface and can reflect in the stratum, the wave-detector that the signal of reflection wave is arranged through ground receives, and analyzes the situation that the tax in oil or coal seam is deposited thus.The degree of depth of burying according to oil or coal seam and the situation of exciting media require explosive-source explosive post to have different density and explosion velocity, are divided into three kinds usually, i.e. the high explosion velocity (density>=1.4g/cm of high-density
3, explosion velocity (density 1.2 ~ 1.4g/cm in explosion velocity>=5000m/s) explosive-source explosive post, the middle density
3, explosion velocity>=4000m/s) explosive-source explosive post, low density are hanged down explosion velocity (density 1.0 ~ 1.2g/cm
3, the explosive-source explosive post of explosion velocity>=3500m/s).For back two kinds, common water gel explosive and emulsion [explosive all can be realized.For first kind of product; The patent No. is 88210907.3 to disclose high explosion velocity shaped charge; Hexogen that main charge employing military products can not be multiplexing and the mixture of tritonal (being called for short the black ladder) or trinitrotoluene fusing back injection explosive-source explosive post shell, density＞1.5g/cm
3, explosion velocity＞6000m/s; The patent No. is that 02276591.3 to disclose a kind of explosive-source explosive post main charge that is used for seismic prospecting be to be made up of emulsion [explosive and tritonal, and density is 1 ~ 1.5g/cm
3The density of the main charge of these two kinds of explosive-source explosive posts is bigger, contains a large amount of tritonal, make and use in cause easily to the harm of human body with to the pollution of environment.The patent No. is 00233133.0 to disclose the high explosion velocity explosive-source explosive post of powdery, though explosion velocity reaches more than the 5000m/s, the density of main charge is merely 1.2 ~ 1.4g/cm
3The patent No. is 02268346.1 to disclose the anti-water explosive-source explosive post of high explosion velocity, and main charge adopts retired fiery explosive, and the explosion velocity of explosive is up to 6800 ~ 7000m/s, but the dangerous sensitivity of explosive is higher, produces dangerous; The patent No. is 200820024132.8 to disclose high explosion velocity explosive-source explosive post; Be provided with the center plastics tubing in the intravital centre of explosive-source explosive post shell; (core medicine explosive load is 18 ~ 22g/m) to fill the high energy primacord fuse in the plastics tubing of center; The lower performance explosive is filled in space between center plastics tubing and the powder column inner walls, though this explosive-source explosive post has satisfied the performance requriements of high explosion velocity explosive-source explosive post, main charge is that charge density is little; The lower performance explosive that the unit volume energy is low makes that the reflected energy of seismic wave is low.The patent No. is 03282513.7 to disclose the water gel explosive explosive-source explosive post, and its main charge is that the density of common rocks water gel explosive is also lower, is merely 1.0 ~ 1.2g/cm
3, this explosive-source explosive post powder charge shell adopts the hard PVC plastics tubing housing of high compressive strength to improve the compressive property of explosive-source explosive post.
Summary of the invention
In order to solve the problems such as material tritonal or dangerous sensitive Containing Waste Propellant that the existing high explosion velocity explosive-source explosive post of high-density main charge contains environmental pollution; The present invention provides a kind of production and the high explosion velocity water gel explosive of high-density safe in utilization, environmentally safe explosive-source explosive post, and the preparation method of this explosive-source explosive post is provided simultaneously.
Concrete technical scheme is following:
The high explosion velocity water gel explosive of a kind of high-density explosive-source explosive post is characterized in that said explosive-source explosive post comprises high-density water gel explosive, common primacord fuse and explosive-source explosive post shell; Said high-density water gel explosive include the high energy additive; This high energy additive composition is by weight percentage: coating level aluminium powder 46 ~ 60, ferrosilicon powder 31 ~ 40, whiteruss 4 ~ 6, turps 5 ~ 8.
Said high-density water gel explosive composition is by weight percentage: nitric acid monomethylamine aqueous solution 33 ~ 45, ethylenediamine nitrate 8 ~ 10, an ammonium nitrate 32 ~ 36, antifreezing agent 1 ~ 2, SODIUMNITRATE 5 ~ 7, sesbania powder 0.8 ~ 1, linking agent 0.1 ~ 0.3, high energy additive 8.1 ~ 10.7; Wherein nitric acid monomethylamine aqueous solution concentration is 75% ~ 86%.
Said common primacord fuse includes the core medicine, and said core medicine is Tai An or hexogen, and core medicine explosive load is 8 ~ 12 g/m, explosion velocity＞6000m/s.
Antifreezing agent is tetramethylolmethane, DMSO 99.8MIN. or both mixtures.
Make the method for making of the high explosion velocity water gel explosive of high-density of the present invention explosive-source explosive post, may further comprise the steps:
A. coating level aluminium powder and ferrosilicon powder are joined to stir in whiteruss and the terebinthine mixed solution and obtain the high energy additive;
B. SODIUMNITRATE is mixed the mixture that obtains SODIUMNITRATE and sesbania powder after pulverizing with the sesbania powder;
C. under agitation adding concentration successively and be 75% ~ 86% nitric acid Monomethylamine solution, ethylenediamine nitrate, an ammonium nitrate, antifreezing agent and controlled temperature is 55 ℃ ~ 75 ℃, adds the mixture, linking agent of the SODIUMNITRATE that obtained by b and sesbania powder more respectively, the high energy additive that is obtained by step a is mixed into the high-density water gel explosive;
D. a length is equaled in the common primacord fuse insertion explosive-source explosive post shell of explosive-source explosive post outer cover length, the high-density water gel explosive that reinject and obtained by step c seal and promptly make the high explosion velocity water gel explosive of high-density explosive-source explosive post.
Ultimate principle of the present invention is: though coating level aluminium powder in the high energy additive and ferrosilicon powder in storage process, be prone to explosive in oxygenant generation oxidizing reaction; But can utilize whiteruss and terebinthine mixture that coating level aluminium powder and ferrosilicon powder are further coated; Make the surface of aluminium powder and ferrosilicon powder one deck water-repellent film that is covered again; Stop coating level aluminium powder directly to contact with oxygenant an ammonium nitrate, and then improved the resistance of oxidation of metal powder in production and storage process in the high energy additive with ferrosilicon powder.
The miscible at a certain temperature low low thing that dissolves altogether of crystallization point that formed of nitric acid Monomethylamine solution, ethylenediamine nitrate, an ammonium nitrate and antifreezing agent; And with this jelling agent of sesbania powder through with the SODIUMNITRATE premix after; By SODIUMNITRATE characteristic soluble in water; The sesbania powder is fully hydration and form gelling in solution, adds the mixing of linking agent and high energy additive more successively and obtains the high-density water gel explosive.Because the crosslinked certain hour that needs of this explosive; Before this explosive is crosslinked, has flowability; Available screw rod pumping is injected and is equipped with in the explosive-source explosive post housing of common primacord fuse, and this high-density water gel explosive, common primacord fuse and explosive-source explosive post shell three have been assembled into the high explosion velocity water gel explosive of high-density explosive-source explosive post.Owing to contain nitric acid Monomethylamine sensitizing agent in this high-density water gel explosive; Simultaneously; Metal powder is adsorbed with bubble in the high energy additive that adds, and when explosive charge reacts, can form " focus ", makes this high-density water gel explosive have Sensitivity to Primary Explosion preferably; Can use common primacord fuse reliable initiation and propagation of explosion, its explosion velocity equals the velocity of explosion of common primacord fuse.In addition, coating level aluminium powder in the high energy additive and ferrosilicon powder have good secondary reaction effect, thereby this water gel explosive explosive-source explosive post has high energy density and power.
The present invention has following characteristics:
1, utilize whiteruss and turps in the high energy additive that coating level aluminium powder and ferrosilicon powder are further coated; Make the surface of aluminium powder and ferrosilicon powder one deck water-repellent film that is covered again; Stop the direct of aqueous oxidizing agent solution such as aluminium powder and ferrosilicon powder and an ammonium nitrate to contact, to preventing oxidized the playing a decisive role of metal powder in the high energy additive.This point gordian technique of the present invention just.Because in the existing explosive if add metal powder as the high energy additive after, metal powder is prone to oxidized dose of oxidation, causes explosive power decline after a period of stabilisation.
2, the miscible back of nitric acid Monomethylamine solution, ethylenediamine nitrate, an ammonium nitrate and antifreezing agent forms the low thing that dissolves altogether, stability and frost resistance that this low solutrope crystallization point is low, help improving explosive system.
3, pass through the common sensibilized of nitric acid Monomethylamine, ethylenediamine nitrate and high energy additive in the component; Make explosive have Sensitivity to Primary Explosion preferably; Rather than picture common rocks water gel explosive employing chemicalfoaming or pearlstone sensitization, this plays keying action for the high crushing resistance of explosive-source explosive post with common primacord fuse with regard to ability reliable initiation and propagation of explosion.
In sum, the present invention compares with existing water gel explosive explosive-source explosive post, and its remarkable advantage is
1) metal powder in the high energy additive is further coated by the liquid combustible agent, in production and storage process, prevents oxidized dose of oxidation of metal powder effectively.
2) add ethylenediamine nitrate and antifreezing agent in the water gel explosive, crystallization point is low, and system stability and frost resistance are good.
3) water-content of explosive is few, and density is high, and power is big, and compressive property is good.
4) loaded constitution is simple, axially puts into the explosive-source explosive post housing arbitrarily with general common primacord fuse, just can make high-density water gel explosive reliable initiation and propagation of explosion, makes explosive-source explosive post satisfy the performance requriements of high explosion velocity.
5) the explosive method of manufacture is easy, and reliable, safety is suitable for suitability for industrialized production.
The high explosion velocity water gel explosive of high-density provided by the invention explosive-source explosive post is adaptable across the requirement of oil field and coal seismic prospecting.
Description of drawings
Fig. 1 is the structural representation of the high explosion velocity water gel explosive of high-density of the present invention explosive-source explosive post.
Embodiment
Following embodiment can make those skilled in the art more fully understand the present invention, but does not limit the present invention in any way.In addition, like no specified otherwise, the each component percentage composition is meant weight percentage among the present invention.
< embodiment 1 >
The high explosion velocity water gel explosive of a kind of high-density explosive-source explosive post, (core medicine explosive load is too peace (formal name used at school trinitrol, the chemical formula C (CH of 10g/m by high-density water gel explosive, common primacord fuse by explosive-source explosive post
2ONO
2)
4) and explosive-source explosive post shell formation, its middle-high density water gel explosive composition is by weight percentage: concentration is 82% nitric acid monomethylamine aqueous solution 39, ethylenediamine nitrate 9, an ammonium nitrate 34, antifreezing agent tetramethylolmethane 1.5, SODIUMNITRATE 6, sesbania powder 0.9, linking agent SRM 935a 0.15, high energy additive 9.45.Wherein said high energy additive composition is by weight percentage: coating level aluminium powder 53, ferrosilicon powder 35.5, whiteruss 5, turps 6.5.
According to above-mentioned component and content, process the high explosion velocity water gel explosive of high-density of the present invention explosive-source explosive post with following preparation process.
The method for making of the high explosion velocity water gel explosive of high-density explosive-source explosive post is:
A. coating level aluminium powder and ferrosilicon powder are joined to stir in whiteruss and the terebinthine mixed solution and obtain the high energy additive;
B. SODIUMNITRATE is mixed the mixture that obtains SODIUMNITRATE and sesbania powder after pulverizing with the sesbania powder;
C. under stirring at low speed, adding concentration successively and be 82% nitric acid Monomethylamine solution, ethylenediamine nitrate, an ammonium nitrate, antifreezing agent and controlled temperature is 55 ℃ ~ 75 ℃, adds the mixture, linking agent of the SODIUMNITRATE that obtained by b and sesbania powder more respectively, the high energy additive that is obtained by step a is mixed into the high-density water gel explosive;
D. see also Fig. 1, the common primacord fuse 3 that a length is equaled the explosive-source explosive post outer cover length axially inserts arbitrarily in the explosive-source explosive post shells 1, and the high-density water gel explosive 2 that reinject and obtained by step c use detonator seat 4 to seal promptly to make density to be 1.43g/cm
3, explosion velocity is greater than the high explosion velocity water gel explosive of the high-density explosive-source explosive post of 6300m/s.
< embodiment 2 >
The high explosion velocity water gel explosive of a kind of high-density explosive-source explosive post; Be made up of high-density water gel explosive, common primacord fuse (core medicine explosive load is the hexogen of 11g/m) and explosive-source explosive post shell explosive-source explosive post, wherein said high-density water gel explosive composition is by weight percentage: concentration is 75% nitric acid monomethylamine aqueous solution 33, ethylenediamine nitrate 10, an ammonium nitrate 36, antifreezing agent DMSO 99.8MIN. 2, SODIUMNITRATE 7, sesbania powder 1, linking agent potassium pyroantimoniate 0.3, high energy additive 10.7.Wherein said high energy additive composition is by weight percentage: coating level aluminium powder 60, ferrosilicon powder 31, whiteruss 4, turps 5.
According to above-mentioned component and content, according to the preparation process of embodiment 1, promptly making density is 1.42g/cm
3, explosion velocity is greater than the high explosion velocity water gel explosive of the high-density explosive-source explosive post of 6400m/s.
< embodiment 3 >
The high explosion velocity water gel explosive of a kind of high-density explosive-source explosive post; Be made up of high-density water gel explosive, common primacord fuse (core medicine explosive load is the too peace of 9g/m) and explosive-source explosive post shell explosive-source explosive post, wherein said high-density water gel explosive composition is by weight percentage: concentration is 86% nitric acid monomethylamine aqueous solution 45, ethylenediamine nitrate 8, an ammonium nitrate 32, antifreezing agent DMSO 99.8MIN. 1, SODIUMNITRATE 5, sesbania powder 0.8, linking agent SRM 935a 0.1, high energy additive 8.1.Wherein said high energy additive composition is by weight percentage: coating level aluminium powder 46, ferrosilicon powder 40, whiteruss 6, turps 8.
According to above-mentioned component and content, according to the preparation process of embodiment 1, promptly making density is 1.41g/cm
3, explosion velocity is greater than the high explosion velocity water gel explosive of the high-density explosive-source explosive post of 6200m/s.
< embodiment 4 >
The high explosion velocity water gel explosive of a kind of high-density explosive-source explosive post; Be made up of high-density water gel explosive, common primacord fuse (core medicine explosive load is the too peace of 11g/m) and explosive-source explosive post shell explosive-source explosive post, wherein said high-density water gel explosive composition is by weight percentage: concentration is 81% nitric acid monomethylamine aqueous solution 40, ethylenediamine nitrate 10, an ammonium nitrate 33, antifreezing agent tetramethylolmethane 1.9, SODIUMNITRATE 6, sesbania powder 0.8, linking agent potassium permanganate 0.13, high energy additive 8.17.Wherein said high energy additive composition is by weight percentage: coating level aluminium powder 50, ferrosilicon powder 36, whiteruss 6, turps 8.
According to above-mentioned component and content, according to the preparation process of embodiment 1, promptly making density is 1.41g/cm
3, explosion velocity is greater than the high explosion velocity water gel explosive of the high-density explosive-source explosive post of 6400m/s.
< embodiment 5 >
The high explosion velocity water gel explosive of a kind of high-density explosive-source explosive post; Be made up of high-density water gel explosive, common rocks primacord fuse (core medicine explosive load is the hexogen of 11g/m) and explosive-source explosive post shell explosive-source explosive post, wherein said high-density water gel explosive composition is by weight percentage: concentration is 79% nitric acid monomethylamine aqueous solution 39, ethylenediamine nitrate 9, an ammonium nitrate 34, antifreezing agent (DMSO 99.8MIN.: tetramethylolmethane=1:1) 1.4, SODIUMNITRATE 5, sesbania powder 0.9, linking agent potassium pyroantimoniate 0.16, high energy additive 10.54.Wherein said high energy additive composition is by weight percentage: coating level aluminium powder 57, ferrosilicon powder 33, whiteruss 5, turps 5.
According to above-mentioned component and content, according to the preparation process of embodiment 1, promptly making density is 1.44g/cm
3, explosion velocity is greater than the high explosion velocity water gel explosive of the high-density explosive-source explosive post of 6400m/s.
< embodiment 6 >
The high explosion velocity water gel explosive of a kind of high-density explosive-source explosive post; Be made up of high-density water gel explosive, common rocks primacord fuse (core medicine explosive load is the too peace of 12g/m) and explosive-source explosive post shell explosive-source explosive post, wherein said high-density water gel explosive composition is by weight percentage: concentration is 84% nitric acid monomethylamine aqueous solution 41, ethylenediamine nitrate 8, an ammonium nitrate 33, antifreezing agent tetramethylolmethane 1.7, SODIUMNITRATE 6, sesbania powder 0.9, linking agent SRM 935a 0.13, high energy additive 9.27.Wherein said high energy additive composition is by weight percentage: coating level aluminium powder 54, ferrosilicon powder 34, whiteruss 6, turps 6.
According to above-mentioned component and content, according to the preparation process of embodiment 1, promptly making density is 1.43g/cm
3, explosion velocity is greater than the high explosion velocity water gel explosive of the high-density explosive-source explosive post of 6400m/s.
Claims (5)
1. the high explosion velocity water gel explosive of a high-density explosive-source explosive post is characterized in that said explosive-source explosive post comprises high-density water gel explosive, common primacord fuse and explosive-source explosive post shell; Said high-density water gel explosive include the high energy additive; This high energy additive composition is by weight percentage: coating level aluminium powder 46 ~ 60, ferrosilicon powder 31 ~ 40, whiteruss 4 ~ 6, turps 5 ~ 8.
2. according to the high explosion velocity water gel explosive of the described high-density of claim l explosive-source explosive post, it is characterized in that said high-density water gel explosive composition is by weight percentage: nitric acid monomethylamine aqueous solution 33 ~ 45, ethylenediamine nitrate 8 ~ 10, an ammonium nitrate 32 ~ 36, antifreezing agent 1 ~ 2, SODIUMNITRATE 5 ~ 7, sesbania powder 0.8 ~ 1, linking agent 0.1 ~ 0.3, high energy additive 8.1 ~ 10.7; Wherein nitric acid monomethylamine aqueous solution concentration is 75% ~ 86%.
3. the high explosion velocity water gel explosive of high-density according to claim 1 explosive-source explosive post is characterized in that said common primacord fuse includes the core medicine, and said core medicine is Tai An or hexogen, and core medicine explosive load is 8 ~ 12 g/m, explosion velocity＞6000m/s.
4. high-density water gel explosive explosive-source explosive post according to claim 2 is characterized in that antifreezing agent is tetramethylolmethane, DMSO 99.8MIN. or both mixtures.
5. method for making of making the high explosion velocity water gel explosive of each described high-density of claim 1 to 4 explosive-source explosive post is characterized in that may further comprise the steps:
A. coating level aluminium powder and ferrosilicon powder are joined to stir in whiteruss and the terebinthine mixed solution and obtain the high energy additive;
B. SODIUMNITRATE is mixed the mixture that obtains SODIUMNITRATE and sesbania powder after pulverizing with the sesbania powder;
C. under agitation adding concentration successively and be 75% ~ 86% nitric acid Monomethylamine solution, ethylenediamine nitrate, an ammonium nitrate, antifreezing agent and controlled temperature is 55 ℃ ~ 75 ℃, adds the mixture, linking agent of the SODIUMNITRATE that obtained by b and sesbania powder more respectively, the high energy additive that is obtained by step a is mixed into the high-density water gel explosive;
D. a length is equaled in the common primacord fuse insertion explosive-source explosive post shell of explosive-source explosive post outer cover length, the high-density water gel explosive that reinject and obtained by step c seal and promptly make the high explosion velocity water gel explosive of high-density explosive-source explosive post.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102942428A (en) * | 2012-11-12 | 2013-02-27 | 安徽理工大学 | High-power water gel explosive applicable to coal mine and manufacturing method thereof |
| CN103936535A (en) * | 2014-04-03 | 2014-07-23 | 安徽盾安民爆器材有限公司 | Powdery emulsion explosive and preparation method thereof |
| CN105439783A (en) * | 2015-12-14 | 2016-03-30 | 山西江阳兴安民爆器材有限公司 | Expired propellant-containing water-gel explosive-filled seismic charge and preparation method thereof |
| CN106242932A (en) * | 2016-09-07 | 2016-12-21 | 中北大学 | A kind of freeze proof aqueous gels and preparation method thereof |
| CN106565389A (en) * | 2016-10-19 | 2017-04-19 | 安徽理工大学 | Charging structure and charging method for rock-breaking grain |
| CN106565388A (en) * | 2016-10-19 | 2017-04-19 | 安徽理工大学 | Rock breaking grain and preparation method thereof |
| CN106565391A (en) * | 2016-10-26 | 2017-04-19 | 山西江阳兴安民爆器材有限公司 | Expired propellant containing high-detonation-velocity water-resistant type seismic explosive column and manufacturing method thereof |
| CN114804986A (en) * | 2022-05-05 | 2022-07-29 | 安徽理工大学 | Strong-constraint high-power water gel explosive seismic explosive column |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104987272A (en) * | 2015-04-28 | 2015-10-21 | 安徽雷鸣科化股份有限公司 | High detonation speed seismic explosive column and making method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102942428A (en) * | 2012-11-12 | 2013-02-27 | 安徽理工大学 | High-power water gel explosive applicable to coal mine and manufacturing method thereof |
| CN102942428B (en) * | 2012-11-12 | 2015-01-14 | 安徽理工大学 | High-power water gel explosive applicable to coal mine and manufacturing method thereof |
| CN103936535A (en) * | 2014-04-03 | 2014-07-23 | 安徽盾安民爆器材有限公司 | Powdery emulsion explosive and preparation method thereof |
| CN105439783A (en) * | 2015-12-14 | 2016-03-30 | 山西江阳兴安民爆器材有限公司 | Expired propellant-containing water-gel explosive-filled seismic charge and preparation method thereof |
| CN106242932A (en) * | 2016-09-07 | 2016-12-21 | 中北大学 | A kind of freeze proof aqueous gels and preparation method thereof |
| CN106242932B (en) * | 2016-09-07 | 2018-05-01 | 中北大学 | A kind of freeze proof aqueous gels and preparation method thereof |
| CN106565389A (en) * | 2016-10-19 | 2017-04-19 | 安徽理工大学 | Charging structure and charging method for rock-breaking grain |
| CN106565388A (en) * | 2016-10-19 | 2017-04-19 | 安徽理工大学 | Rock breaking grain and preparation method thereof |
| CN106565389B (en) * | 2016-10-19 | 2018-11-02 | 安徽理工大学 | A kind of broken rock powder column charge constitution and loading method |
| CN106565391A (en) * | 2016-10-26 | 2017-04-19 | 山西江阳兴安民爆器材有限公司 | Expired propellant containing high-detonation-velocity water-resistant type seismic explosive column and manufacturing method thereof |
| CN114804986A (en) * | 2022-05-05 | 2022-07-29 | 安徽理工大学 | Strong-constraint high-power water gel explosive seismic explosive column |
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| CN102432409B (en) | 2013-09-11 |
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