CN203534368U - Combined type pre-cracking detonation explosive column - Google Patents
Combined type pre-cracking detonation explosive column Download PDFInfo
- Publication number
- CN203534368U CN203534368U CN201320743388.5U CN201320743388U CN203534368U CN 203534368 U CN203534368 U CN 203534368U CN 201320743388 U CN201320743388 U CN 201320743388U CN 203534368 U CN203534368 U CN 203534368U
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- CN
- China
- Prior art keywords
- explosive column
- detonation
- cracking
- powder column
- support
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- 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 - Lifetime
Links
- 239000002360 explosive Substances 0.000 title claims abstract description 23
- 238000005474 detonation Methods 0.000 title abstract 8
- 238000005336 cracking Methods 0.000 title abstract 5
- 239000000843 powder Substances 0.000 claims description 43
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000005422 blasting Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Abstract
The utility model provides a combined type pre-cracking detonation explosive column which comprises explosive column shells, wherein an internal thread and an external thread are respectively arranged at the head part and the tail part of each explosive column shell; the explosive column shells are connected through the threads; two detonation cord grooves are symmetrically formed in two sides of the outer surface of each explosive column shell; a main charge fills in each explosive column shell; the threads on the shells are convenient for connection of a plurality of explosive column shells; detonation cords are fixed in the detonation cord grooves; an explosive column bracket is perpendicularly fixed at a joint of the two explosive column shells; the detonation cords are fixed in the detonation cord grooves when passing through the bracket; a plurality of water drainage holes are formed in the outer circular surface of the bracket, so that water accumulated in blast holes can be smoothly discharged out. The detonation explosive column provided by the utility model is mainly applicable to pre-cracking and smooth blasting, can be also used in pre-cracking blasting in water and has the advantages of accuracy in explosive filling, energy adjustability, simplicity in operation and obvious pre-cracking effect.
Description
Technical field
The utility model relates to explosion utensil, particularly, is a kind of combined type presplitting primary explosive column that is applicable to presplitting and photoface exploision of knowing.
Background technology
Presplitting and photoface exploision are a kind of new technologies being widely used in the blast workings such as mine, water conservancy, highway.Wherein presplit blasting is first to form a plane of disruption on excavation sideline, seismic wave is to the propagation of slope rock mass when weakening the explosion of Zhu Bao district, and the crack developed outside side slope of blocking-up, after main blast hole is quick-fried, along pre-broken face, form a smooth side slope of backbreaking seldom or not backbreaking, photoface exploision is that Zhu Bao district is first quick-fried, at the quick-fried plane of disruption, other is similar with presplit blasting.
At present, presplitting generally adopts the identical coupling charging in Yu Zhubao district to carry out explosion with photoface exploision, or powder stick order is tied up on primacord, carry out presplitting and photoface exploision, extensive style powder charge often can not be embarked on journey in crack like this, or half porosity ratio of briquetting is not high, and effect is not ideal enough.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of combined type presplitting primary explosive column for presplitting and photoface exploision.
A combined type presplitting primary explosive column, comprises powder column housing, and the head of powder column housing and afterbody arrange respectively internal and external threads, and powder column housing is threaded connection, and has to powder column housing outer surface bilateral symmetry two primacord grooves.In powder column housing, main charge is housed, the screw thread on housing is convenient to a plurality of powder column housings and is connected, the interior fixedly primacord of primacord groove.
On this basis, as preferred scheme, the utility model also comprises that at right angle setting is in the powder column support of two powder column housing junctions, powder column support is cirque structure, outside is the support cylindrical of ring-type, and middle part is support endoporus, radially on support cylindrical, has primacord groove.Powder column support is fixed on to the junction of two joint powder column housings, when primacord passes through support, is fixed in primacord groove.
As preferred scheme, on support outer round surface, have several osculums, the ponding in big gun hole is discharged smoothly.
Compared with prior art, the utility model, by primacord groove and screw thread are set on the housing of primary explosive column, guarantees that primacord maximum area contacts with powder column, has improved the percentage of initiation of product, and has facilitated powder charge and attended operation; By powder column support, guarantee that powder column is in the central authorities in big gun hole, effectively improve half hole forming rate, reach good Pre-splitting Blasting Effect.The primary explosive column that the utility model provides, is mainly applicable to presplitting and photoface exploision, also can be used for presplit blasting in water, has accurate powder charge, and energy is adjustable, simple to operate, the significant advantage of presplitting effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Structural representation when Fig. 2 is two powder columns connections.
Fig. 3 is powder column support.
1-powder column housing, 2-primacord groove, 3-powder column support, 301-support cylindrical, 302-support endoporus, 303-primacord groove, 304-osculum, 4-main charge, 5-primacord.
The specific embodiment
In order to make those skilled in the art better understand the utility model, below in conjunction with accompanying drawing, the utility model is done to further clear, complete explanation.
As shown in Figure 1, 2, a kind of combined type presplitting primary explosive column described in the utility model, comprises powder column housing, and the head of powder column housing 1 and afterbody arrange respectively internal and external threads, powder column housing 1 is threaded connection, and has to powder column housing 1 outer surface bilateral symmetry two primacord grooves 2.Powder column housing 1 is plastic casing, and main charge 4 is equipped with in inside, and diameter is 45,60 or 75mm, and a plurality of powder column housings 1 are threaded connection and close in groups primary explosive column.Two primacord grooves 2, the interior fixedly primacord 5 of primacord groove 2, guarantees that primacord 5 maximum areas contact with powder column, at utmost improve the percentage of initiation of product.
On this basis, as shown in Figure 2, also comprise that at right angle setting is in the powder column support 3 of two powder column housing 1 junctions, powder column support is cirque structure, as shown in Figure 3, the support cylindrical 301 that outside is ring-type, middle part is support endoporus 302, radially on support cylindrical 301, have primacord groove 303, the width of primacord groove 303 is generally 8mm.Powder column support 3 can effectively be fixed between two joint powder columns, guarantees that powder column is in the central authorities in big gun hole, effectively improves big gun wall ratio of briquetting, reaches good Pre-splitting Blasting Effect.Support cylindrical external diameter is definite according to blasthole diameter, and support endoporus is determined according to powder column diameter.
As shown in Figure 3, have several osculums 304 on support cylindrical 301 surfaces, the diameter of osculum 304 is 1mm.
The claimed scope of the utility model is not limited to the above specific embodiment; to those skilled in the art; the utility model can have various deformation and change, all any modifications of doing within design of the present utility model and principle, improves and is equal within replacement all should be included in protection domain of the present utility model.
Claims (3)
1. a combined type presplitting primary explosive column, comprise powder column housing, it is characterized in that: head and the afterbody of powder column housing (1) arrange respectively internal and external threads, and powder column housing (1) is threaded connection, have to powder column housing (1) outer surface bilateral symmetry two primacord grooves (2).
2. combined type presplitting primary explosive column according to claim 1, it is characterized in that: also comprise that at right angle setting is in the powder column support (3) of two powder column housings (1) junction, powder column support (3) is cirque structure, outside is the support cylindrical (301) of ring-type, middle part is support endoporus (302), radially on support cylindrical (301), has primacord groove (303).
3. combined type presplitting primary explosive column according to claim 2, is characterized in that: support cylindrical (301) has several osculums (304) on surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743388.5U CN203534368U (en) | 2013-11-23 | 2013-11-23 | Combined type pre-cracking detonation explosive column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320743388.5U CN203534368U (en) | 2013-11-23 | 2013-11-23 | Combined type pre-cracking detonation explosive column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203534368U true CN203534368U (en) | 2014-04-09 |
Family
ID=50420563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320743388.5U Expired - Lifetime CN203534368U (en) | 2013-11-23 | 2013-11-23 | Combined type pre-cracking detonation explosive column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203534368U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907960A (en) * | 2017-04-17 | 2017-06-30 | 安徽理工大学 | A kind of one side notched blasting powder column housing |
| CN109059693A (en) * | 2018-09-30 | 2018-12-21 | 中国葛洲坝集团易普力股份有限公司 | A kind of presplit blasting mixed charge method, charge constitution and auxiliary device |
-
2013
- 2013-11-23 CN CN201320743388.5U patent/CN203534368U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907960A (en) * | 2017-04-17 | 2017-06-30 | 安徽理工大学 | A kind of one side notched blasting powder column housing |
| CN106907960B (en) * | 2017-04-17 | 2019-02-12 | 安徽理工大学 | A kind of single side notched blasting powder column shell |
| CN109059693A (en) * | 2018-09-30 | 2018-12-21 | 中国葛洲坝集团易普力股份有限公司 | A kind of presplit blasting mixed charge method, charge constitution and auxiliary device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |
|
| CX01 | Expiry of patent term |