CN110631424B - Detonator type miniature explosive package - Google Patents
Detonator type miniature explosive package Download PDFInfo
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- CN110631424B CN110631424B CN201910884124.3A CN201910884124A CN110631424B CN 110631424 B CN110631424 B CN 110631424B CN 201910884124 A CN201910884124 A CN 201910884124A CN 110631424 B CN110631424 B CN 110631424B
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- explosive
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B25/00—Compositions containing a nitrated organic compound
- C06B25/04—Compositions containing a nitrated organic compound the nitrated compound being an aromatic
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C7/00—Non-electric detonators; Blasting caps; Primers
- C06C7/02—Manufacture; Packing
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06D—MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART)
- C06D5/00—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets
- C06D5/06—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets by reaction of two or more solids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Manufacturing & Machinery (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention provides a detonator type miniature explosive package, which consists of an explosive charging structure and a detonation structure; the explosive charging structure comprises a cylindrical explosive charging shell with one sealed end, an explosive charging cavity is arranged in the explosive charging shell, the explosive charging structure comprises a cylindrical explosive charging shell with one sealed cover at one end, a leg wire, a bridge wire and an ignition head which are sequentially connected are arranged in the explosive charging shell, the tail end of the ignition head and the unsealed end of the explosive charging shell are located on the same end face, one end of the leg wire is fixed in the explosive charging shell through a sealing plug, and the other end of the leg wire penetrates through the sealed cover and is used for being connected with an initiator. The micro explosive package with the structure is filled with a novel mixed explosive, is simple to fill, ensures the charge density and uniformity of the explosive in a blast hole and the stability of the explosive, wherein the detonation structure replaces a detonator to detonate a cartridge, the mixed explosive can explode without the detonator, not only ensures the power, but also improves the sensitivity of the explosive, and the detonation effect can be achieved without the initiating explosive.
Description
Technical Field
The invention relates to the technical field of explosives, in particular to a detonator type miniature explosive package.
Background
Explosive explosion is a process of rapidly generating a large amount of gas and releasing energy, and is widely applied to the field of engineering blasting disciplines due to the characteristics of the explosive explosion, including blasting of open-air and underground geotechnics, buildings, underwater engineering and the like. The blasting objects and conditions faced by the engineering blasting are all specific, i.e. each engineering blasting is a complex and unrepeatable process.
In order to better apply the engineering blasting technology, the influence mechanism of the explosive on the rock medium is known, and the practical engineering problem is solved. The method mainly comprises three methods of physical experiment, theoretical research analysis and numerical simulation, wherein for the physical experiment, a brittle material similar or close to the physical property of a mineral rock mass is mainly selected to manufacture a similar model test block, the energy generated by explosive cartridge explosion is used for carrying out a blasting test, the blasting process and the rock breaking condition and the blasting effect of the model test block are researched, and finally the practical engineering problem is solved through a blasting similarity law. When a physical blasting experiment is carried out, the selection of explosive charges and model test blocks is particularly important, and whether the actual conditions of the selected charges and test blocks capable of truly reflecting the blasting of the original size is the decisive condition for the success of the blasting experiment.
When a relevant blasting model experiment is carried out on site, the fact that the energy generated by the explosion of a common explosive cartridge is too large, sometimes even the energy generated by the explosion of a detonator is larger than the energy requirement for damaging a test block, and the experimental requirement cannot be met is found. In order to ensure the performance of a model experiment, the mixed explosives in the explosive cartridge or the detonator are often required to be manually loaded into the blast hole, but the method cannot ensure the uniformity and the density of the loaded explosives, and can generate certain influence on the blasting effect, so that the accuracy of the experiment is influenced. For this purpose, a small cartridge should be developed for blasting with a specific dosage requirement to solve the practical problem.
In order to meet different practical requirements, researchers at home and abroad have different understandings on the research of small-sized explosive packages, patent document CN202688227U discloses a low-temperature-resistant small-diameter water gel explosive, wherein the explosive is stored in a cylindrical 18mm packaging layer, the thickness of the packaging layer is about 0.08-1mm, two ends of the packaging layer are provided with seals, the open end is an H-shaped sealing cap, and the closed end is a thread which is matched and connected with the sealing cap. The explosive bag solves the problem of convenient explosive filling, and the packaging layer can better keep the stable performance of the explosive, but also has the following technical problems: firstly, the explosive cartridge solves the problem of size reduction on the external surface, but still needs to be detonated by a detonator, the energy generated by the explosion of some detonators is larger than the energy requirement of the experiment, and obviously, the explosive cartridge is inapplicable.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to provide a miniature explosive package with a detonation structure, which can adjust the explosive quantity according to requirements, maintain the stability of the explosive and is simple to use for blasting with low energy requirements.
The technical scheme adopted by the invention for solving the technical problems is as follows: a detonator type miniature explosive package comprises an explosive charging structure and an explosive detonating structure;
the explosive loading structure comprises a cylindrical explosive loading shell with one sealed end, and an explosive loading cavity is arranged in the explosive loading shell and is used for loading mixed explosive;
the detonation structure comprises a cylindrical detonation shell with a sealing cover at one end, wherein a leg wire, a bridge wire and a detonation head are sequentially connected in the detonation shell, the tail end of the detonation head and the unsealed end of the detonation shell are positioned on the same end face, one end of the leg wire is fixed in the detonation shell through a sealing plug, the other end of the leg wire penetrates through the sealing cover and is used for connecting an initiator, and the explosive charging structure and the detonation structure are assembled to enable the detonation head to be in contact with explosive, so that explosive charges can be used for blasting.
Furthermore, the material of the charging shell and the detonation shell is a metal copper material.
Furthermore, the inner diameters of the explosive charging shell and the detonation shell are different, and the detonation shell and the explosive charging shell are connected in a sliding sleeved mode.
Furthermore, after the explosive charging structure and the explosive firing structure are assembled, the explosive firing shell and the explosive charging shell are fixed and sealed through hydraulic tongs.
Further, the mixed explosive comprises the following components in percentage by mass: 50%, potassium picrate: 50 percent.
Further, the drug loading is 1000mg or less.
Further, the density of the mixed explosive is 1.184g/cm3。
Furthermore, the thicknesses of the cylinder walls of the explosive charging shell and the detonation shell are 0.2-0.25 mm.
Further, when the medicine loading is 1000mg, the lengths of the medicine loading shell and the detonation shell are respectively 30mm and 10mm, when the medicine loading is less than 1000mg, the required length of the medicine loading shell can be calculated according to the required medicine loading and the density, and a proper medicine loading shell is selected or cut.
Compared with the prior art, the invention has the beneficial effects that:
1. the micro explosive bag is simple and easy to load, ensures the charging density and uniformity of the explosive in the blast hole and the stability of the explosive, and can adjust the charging amount of the explosive bag according to the actual requirement, so that the application range of the explosive bag is wider;
2. the production process of the mixed explosive formula is simple, the hexogen in the mixed explosive is used as a high explosive to improve the power and the brisance of the mixed explosive, the potassium picrate is used to improve the flame sensitivity of the mixed explosive, and the capacitive initiator and the detonation structure are combined to arrange the high explosive to generate detonation without the initiator. The mixed explosive has simple proportioning, easy on-site actual modulation and low cost.
3. The detonation structure replaces a detonator detonation cartridge, avoids the influence of energy generated by the self-detonation of the detonator on the expected effect, simultaneously reduces the procedure of installing the detonator in the blasting, and ensures that the whole blasting procedure is simpler. The design of the detonation structure ensures that the ignition head is fully contacted with the upper part of the mixed explosive, and avoids the possibility of explosion rejection.
Drawings
FIG. 1 is a cross-sectional view showing the structure of a detonator type micro explosive package according to example 1 of the present invention;
FIG. 2 is a sectional view of the detonator type micro cartridge of embodiment 1 of the present invention;
FIG. 3 is a cross-sectional view of the detonator type micro-charge configuration of example 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in figures 1, 2 and 3, the invention provides a detonator type miniature explosive package which consists of an explosive charging structure and an explosive detonating structure; the explosive charging structure comprises a cylindrical explosive charging shell 7 with one sealed end, and an explosive charging cavity 6 is arranged in the explosive charging shell and is used for charging mixed explosive; the detonation structure comprises a cylindrical detonation shell 2 with a sealing cover at one end, wherein a leg wire 1, a bridge wire 4 and a firing head 5 which are connected in sequence are arranged in the detonation shell, the tail end of the firing head and the unsealed end of the detonation shell are positioned on the same end face, one end of the leg wire is fixed in the detonation shell through a sealing plug 3, and the other end of the leg wire penetrates through the sealing cover and is used for being connected with an initiator.
The mixed explosive comprises the following components in percentage by mass: 50%, potassium picrate: 50 percent, and the density of the explosive is 1.184g/cm3。
The explosive charging shell and the detonation shell are different in inner diameter, and the detonation shell and the explosive charging shell are in a detachable connection mode of sliding sleeve connection.
By adopting the micro explosive package with the structure, the explosion funnel and the crack propagation rule of cement mortar test pieces with the strength of M25 and the size of 200mm multiplied by 150mm are researched, the blast hole is vertically pre-distributed in the center of the free surface, the diameter is 8mm, the length is 126mm, and the minimum resistance line is 24 mm. The method comprises the following specific steps:
1. calculating the mixed explosive quantity of 500mg required for destroying the strength test piece;
2. filling the required mixed explosive into a cartridge case, compacting the mixed explosive in the structure by using a copper or wood gun stick, and adjusting the length of a charging shell according to the actual length of the filled explosive;
the inner diameter of the detonation shell is 6mm, the thickness of the cylinder wall of the detonation shell is 0.2mm, the length of the cylinder wall of the detonation shell is 10mm, the inner diameter of the charging shell is 6.4mm, the thickness of the cylinder wall of the charging shell is 0.2mm, and the length of the cylinder wall of the charging shell is 15 mm;
3. assembling a charge shell and a detonation shell, sliding the detonation shell to enable an ignition head to be contacted with the mixed explosive, and connecting and sealing a connecting explosive shell and the detonation shell by using hydraulic tongs to finish the manufacture of the micro explosive;
4. enabling the prefabricated blast hole to be in a vertical state, enabling the orifice of the blast hole to be upward, and filling the explosive package into the prefabricated blast hole;
5. filling fine rock powder into the blast hole, filling the rock powder into the blast hole for 3-4 times and compacting;
6. connecting two ends of an electrode of the detonator with a pin wire of the short-connected electric ignition head by using a twin cable, and evacuating people to a safety zone;
7. and outside the safe distance, the switch of the initiator is shifted to a charging gear, and after the charging completion indicator lamp is lightened, the switch is shifted to a detonating gear to complete the blasting operation.
And (3) effect after blasting: the free surface is provided with a damage area which is approximately round and has a more regular shape, and the damage area is uniformly distributed in the central area of the free surface by taking the blast hole as the center. The radius of the bottom circle of the damage area is 46.6mm-60.4mm, 2-4 macrocracks are generated on the free surface, and the volume of the blasting funnel is 63083.5mm3。
Claims (8)
1. A detonator type miniature explosive package is characterized in that the explosive package consists of an explosive charging structure and a detonation structure;
the explosive charging structure comprises a cylindrical explosive charging shell with one sealed end, and an explosive charging cavity is arranged in the explosive charging shell and is used for charging explosives;
the detonation structure comprises a cylindrical detonation shell with a sealing cover at one end, wherein a leg wire, a bridge wire and a firing head which are sequentially connected are arranged in the detonation shell, the tail end of the firing head and the unsealed end of the detonation shell are positioned on the same end surface, one end of the leg wire is fixed in the detonation shell through a sealing plug, and the other end of the leg wire penetrates through the sealing cover and is used for connecting an initiator;
the explosive charging shell and the detonation shell are different in inner diameter, the detonation shell and the explosive charging shell are connected in a sliding sleeved mode, and when the explosive charging shell and the detonation shell are assembled, the detonation shell needs to be slid to enable the ignition head to be in contact with the mixed explosive.
2. The detonator type micro-explosive package of claim 1, wherein the charge shell and the detonation shell are made of a metal copper material.
3. The detonator-type micro explosive package of claim 2, wherein after the explosive charge structure and the detonating structure are assembled, the detonating shell and the explosive charge shell are fixed and sealed by hydraulic clamps.
4. The detonator type micro explosive package of claim 1, wherein the explosive comprises, in mass fraction, hexogen: 50%, potassium picrate: 50 percent.
5. The detonator miniature charge of claim 4 wherein the density of said charge is 1.184g/cm3。
6. The detonator type micro charge of claim 4, wherein the charge is 1000mg or less.
7. The detonator type micro-explosive package of claim 1, wherein the thickness of the walls of the explosive shell and the detonation shell is 0.2mm to 0.25 mm.
8. The detonator type micro explosive package according to claim 6, wherein the lengths of the explosive shell and the detonation shell are respectively 30mm and 10mm when the explosive charge is 1000mg, and when the explosive charge is less than 1000mg, the required length of the explosive shell can be calculated according to the required explosive charge and the density, and an appropriate explosive shell is selected or cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884124.3A CN110631424B (en) | 2019-09-19 | 2019-09-19 | Detonator type miniature explosive package |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910884124.3A CN110631424B (en) | 2019-09-19 | 2019-09-19 | Detonator type miniature explosive package |
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| CN110631424A CN110631424A (en) | 2019-12-31 |
| CN110631424B true CN110631424B (en) | 2022-02-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081966U (en) * | 1990-06-12 | 1991-07-31 | 煤炭科学研究总院抚顺分院 | Electrical detonator without initiating agent for coal mine |
| CN1073006A (en) * | 1991-12-06 | 1993-06-09 | 万发扬 | Initiator type primer cap without initiating agent |
| CN202793187U (en) * | 2011-08-24 | 2013-03-13 | 安徽理工大学 | Non-primary explosive detonator |
| CN202974081U (en) * | 2012-11-26 | 2013-06-05 | 中钢集团武汉安全环保研究院有限公司 | Priming-explosive-free digital safety detonator |
| CN103499253A (en) * | 2013-10-09 | 2014-01-08 | 北京理工大学 | Low-ignition-voltage miniature detonator |
| CN105066800A (en) * | 2015-08-05 | 2015-11-18 | 宏大矿业有限公司 | Split assembled type primary explosive-free electric detonator |
-
2019
- 2019-09-19 CN CN201910884124.3A patent/CN110631424B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2081966U (en) * | 1990-06-12 | 1991-07-31 | 煤炭科学研究总院抚顺分院 | Electrical detonator without initiating agent for coal mine |
| CN1073006A (en) * | 1991-12-06 | 1993-06-09 | 万发扬 | Initiator type primer cap without initiating agent |
| CN202793187U (en) * | 2011-08-24 | 2013-03-13 | 安徽理工大学 | Non-primary explosive detonator |
| CN202974081U (en) * | 2012-11-26 | 2013-06-05 | 中钢集团武汉安全环保研究院有限公司 | Priming-explosive-free digital safety detonator |
| CN103499253A (en) * | 2013-10-09 | 2014-01-08 | 北京理工大学 | Low-ignition-voltage miniature detonator |
| CN105066800A (en) * | 2015-08-05 | 2015-11-18 | 宏大矿业有限公司 | Split assembled type primary explosive-free electric detonator |
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| Publication number | Publication date |
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| CN110631424A (en) | 2019-12-31 |
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