CN104897013A - Radial vacuum spaced charging device with active pressure relief - Google Patents
Radial vacuum spaced charging device with active pressure relief Download PDFInfo
- Publication number
- CN104897013A CN104897013A CN201510382294.3A CN201510382294A CN104897013A CN 104897013 A CN104897013 A CN 104897013A CN 201510382294 A CN201510382294 A CN 201510382294A CN 104897013 A CN104897013 A CN 104897013A
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- Prior art keywords
- vacuum
- charging device
- explosive
- radial
- radial vacuum
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- 239000002360 explosive Substances 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 7
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 238000005422 blasting Methods 0.000 abstract description 12
- 239000011435 rock Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 238000010298 pulverizing process Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000003570 air Substances 0.000 description 9
- 238000005474 detonation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a radial vacuum spaced charging device with active pressure relief, and the radial vacuum spaced charging device comprises an outer cavity (6). The radial vacuum spaced charging device is characterized in that a vacuum dielectric layer (5) is arranged between the outer cavity (6) and an inner cavity (4), both ends of the vacuum dielectric layer (5) are sealed by sealing plates (1), the inner cavity (4) is filled with explosives (3), and an air dielectric layer (2) is arranged above the explosives (3). According to the radial vacuum spaced charging device, the problem that an ideal blasting effect cannot be achieved due to great pulverization effect of rocks in a pulverization area, large early energy consumption and non-ideal effective utilization rate of explosive energy because the explosive energy cannot be effectively discharged in time after explosion due to narrow sealed space in a blast hole by utilizing water or air as spaced media in the prior art is solved.
Description
Technical field
The invention belongs to blasting technique, particularly relate to a kind of radial vacuum space of active release every means for loading.
Background technology
In most of blast working process, in big gun hole, charging means is mainly continuously closely knit charging means and Uncoincided charge mode.And the main Uncoincided charge mode that adopts in surface blasting now, which explosive is adopted directly to contact with the hole wall in big gun hole, when explosive charge in big gun hole, detonation pressure is increased to tens thousand of MPa in the play of having to go to the toilet of several microsecond, and shock wave has been excited in the ore deposit rock of explosive internal layer, its intensity is considerably beyond the compression strength of rock.Under detonation wave consumingly percussion, surrounding rock can be subject to comminuted destruction and form crush zone, finally can cause powder increasing proportion after explosion.Simultaneously because ore deposit rock suffers strong pulverizing, initial stage energy ezpenditure is very large, and explosive energy effective rate of utilization reduces.Therefore, crush zone should be avoided the formation of during explosion as far as possible.Outside crush zone, under the acting in conjunction of stress wave and detonation gas, along with the formation of radial cracking, circumferential crack and tangent cracks, produce the rupture zone that a crackle is grown, this part is then the burst region forming better quality.Initial detonation pressure is reduced in order to reach, reduce the generation of powder, improve blasting quality, reduce explosive consumption, effectively utilize explosive energy, now generally utilize the material such as water or air explosive and big gun hole wall to be separated as blank medium, and then reduce the initial pressure that blast wave acts on hole wall, the action time of effective prolongation blast load, make to produce crush zone around big gun hole and obviously reduce, thus effectively improve explosive energy utilization rate.But still there is the direct phenomenon contacted with blasting hole hole wall of explosive, again because narrow space in hole is airtight, after blast, explosive energy can not timely and effectively be laid down, thus it is still larger to cause rock to obtain pulverization in disintegrating area, initial stage energy ezpenditure is very large, explosive energy effective rate of utilization is not ideal, can not reach more satisfactory demolition effect.
Summary of the invention
The technical problem to be solved in the present invention: provide a kind of radial vacuum space of active release every means for loading, utilize the material such as water or air as blank medium to solve prior art, because in big gun hole, narrow space is airtight, after blast, explosive energy can not timely and effectively be laid down, thus it is still larger to cause rock to obtain pulverization in disintegrating area, initial stage energy ezpenditure is very large, and explosive energy effective rate of utilization is not ideal, can not reach the problems such as more satisfactory demolition effect.
Technical solution of the present invention:
The radial vacuum space of active release is every a means for loading, and it comprises exocoel, is vacuum medium layer between exocoel and inner chamber, and vacuum medium layer two ends are sealed by sealing plate, are filled with explosive in inner chamber, and the top of explosive is air dielectric layer.
The spacing distance of exocoel and big gun hole wall is 3-5 millimeter.
The material of described exocoel, inner chamber and sealing plate is polyvinyl chloride.
The thickness of vacuum medium layer is 15-17 millimeter.
The height of air dielectric layer is 3 millimeters.
Beneficial effect of the present invention:
Explosive of the present invention is in the center of inner chamber, isolate with exocoel by vacuum medium with big gun hole inwall and directly do not contact, after explosive charge, first explosive energy is passed to inner chamber ambient air, again by transfer of air to the vacuum of vacuum medium layer, finally pass to big gun hole, this energy transfer process can by a part of explosive charge energy storage in the vacuum area of vacuum medium layer, blasting hole initial peak pressure is reduced, reduce the ore deposit rock even avoiding being formed because of coupling charging and impact crush zone, expand rupture zone scope, the bounce-back being stored in the gas of exocoel subsequently releases energy automatically, effectively can extend the time of blast action, improve the effective rate of utilization of explosive charge energy, reduce explosive specific charge, blasting cost is reduced, in minimizing blasting flyrock, has obvious effect simultaneously.The invention solves prior art utilizes the material such as water or air as blank medium, because in big gun hole, narrow space is airtight, after blast, explosive energy can not timely and effectively be laid down, thus it is still larger to cause rock to obtain pulverization in disintegrating area, initial stage energy ezpenditure is very large, explosive energy effective rate of utilization is not ideal, can not reach the problems such as more satisfactory demolition effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the radial cross-sectional schematic of the present invention;
Fig. 3 is schematic top plan view of the present invention.
Detailed description of the invention
A kind of radial vacuum space of active release is every means for loading, it comprises exocoel 6, it is vacuum medium layer 5 between exocoel 6 and inner chamber 4, vacuum medium layer 5 two ends are sealed by sealing plate 1, explosive 3 is filled with in inner chamber 4, exocoel 1, inner chamber 4 and sealing plate 8 form a seal chamber, are vacuum medium 5 in cavity.The space segment not loading explosive in inner chamber 4 is air dielectric layer 2.
Exocoel 1 is 3-5 millimeter with the spacing distance of big gun hole wall 7, guarantees that exocoel can be put in big gun hole smoothly.
The material of described exocoel 6, inner chamber 4 and sealing plate 1 is polyvinyl chloride, adopts this material to have flexibility, withstand voltage, wear-resisting, acid and alkali-resistance, the characteristic such as lightweight, and convenient transportation, cheap.
The height of air dielectric layer is 3 millimeters, and object is to meet gap distance requirement.
The thickness of vacuum medium layer 5 is 15-17 millimeter, during to guarantee explosive charge, most explosive charge energy storage is in the vacuum area of vacuum medium layer, blasting hole initial peak pressure is reduced, reduce the ore deposit rock even avoiding being formed because of coupling charging and impact crush zone, expand rupture zone scope.
Advantage of the present invention has:
1, directly contacting with blasthole hole wall by adopting vacuum medium layer to effectively prevent explosive with exocoel, reducing blast initial stage detonation pressure, decreasing the ratio that ore deposit rock crosses pulverizing.
2, explosive is directly loaded inner chamber by the present invention, and powder charge process is simple, improves loading rate, changes degree of packing, decrease top, big gun hole boulder yield, reduces blasting vibration.
3, the air rebound by being stored in vacuum medium layer releases energy automatically, the time of effective prolongation blast action, improve the effective rate of utilization of explosive charge energy, reduce explosive specific charge, blasting cost is reduced, in minimizing blasting flyrock, has obvious effect simultaneously.
Claims (5)
1. the radial vacuum space of an active release is every means for loading, it comprises exocoel (6), it is characterized in that: be vacuum medium layer (5) between exocoel (6) and inner chamber (4), vacuum medium layer (5) two ends are by sealing plate (1) sealing, be filled with explosive (3) in inner chamber (4), the top of explosive (3) is air dielectric layer (2).
2. the radial vacuum space of a kind of active release according to claim 1 is every means for loading, it is characterized in that: exocoel (6) is 3-5 millimeter with the spacing distance of the inwall in big gun hole (7).
3. the radial vacuum space of a kind of active release according to claim 1 is every means for loading, it is characterized in that: the material of described exocoel (6), inner chamber (4) and sealing plate (1) is polyvinyl chloride.
4. the radial vacuum space of a kind of active release according to claim 1 is every means for loading, it is characterized in that: the thickness of vacuum medium layer (5) is 15-17 millimeter.
5. the radial vacuum space of a kind of active release according to claim 1 is every means for loading, it is characterized in that: the height of air dielectric layer (2) is 3 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510382294.3A CN104897013B (en) | 2015-07-03 | 2015-07-03 | A kind of radial direction vacuum space of active release is every means for loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510382294.3A CN104897013B (en) | 2015-07-03 | 2015-07-03 | A kind of radial direction vacuum space of active release is every means for loading |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104897013A true CN104897013A (en) | 2015-09-09 |
| CN104897013B CN104897013B (en) | 2017-08-01 |
Family
ID=54029829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510382294.3A Expired - Fee Related CN104897013B (en) | 2015-07-03 | 2015-07-03 | A kind of radial direction vacuum space of active release is every means for loading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104897013B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258583A (en) * | 2015-11-04 | 2016-01-20 | 贵州大学 | Active-pressure-releasing hole-bottom vacuum spaced charging structure and charging method thereof |
| CN105444624A (en) * | 2015-12-24 | 2016-03-30 | 贵州大学 | Vacuum cartridge bag structure capable of initiatively releasing pressure and accumulating energy during pre-splitting blasting and preparation method thereof |
| CN105571417A (en) * | 2015-12-28 | 2016-05-11 | 浙江科技学院 | Water-air combined medium non-coupled rapid explosive charging device for tunnel extra-large cross section deep-hole rock blasting fragmentation |
| CN106404451A (en) * | 2016-06-07 | 2017-02-15 | 贵州大学 | Waterproof apparatus for automatic rock coring machine and installation method thereof |
| CN106643308A (en) * | 2017-02-10 | 2017-05-10 | 贵州大学 | Axial progressive secondary efficient blasting device and installation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB217169A (en) * | 1923-06-04 | 1924-06-26 | Petits Fils Francois Wendel | Process for the preparation of explosive charges containing liquid air or oxygen |
| JP2003314999A (en) * | 2002-04-23 | 2003-11-06 | Nippon Kayaku Co Ltd | Novel presplitting method |
| US20070267195A1 (en) * | 2006-05-18 | 2007-11-22 | Schlumberger Technology Corporation | Safety Apparatus for Perforating System |
| CN202393307U (en) * | 2011-12-20 | 2012-08-22 | 鞍钢集团矿业公司 | Radial air-separated charging device for hole blasting |
| CN202494397U (en) * | 2011-11-11 | 2012-10-17 | 辽宁科技大学 | An environment-friendly circumferential explosive loading spacer |
| CN203642813U (en) * | 2013-11-13 | 2014-06-11 | 鞍钢集团矿业公司 | Environment-friendly bilinear energy-gathered non-coupling explosive charging spacer |
| CN204757834U (en) * | 2015-07-03 | 2015-11-11 | 贵州大学 | Radial vacuum deck charge device of initiative release |
-
2015
- 2015-07-03 CN CN201510382294.3A patent/CN104897013B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB217169A (en) * | 1923-06-04 | 1924-06-26 | Petits Fils Francois Wendel | Process for the preparation of explosive charges containing liquid air or oxygen |
| JP2003314999A (en) * | 2002-04-23 | 2003-11-06 | Nippon Kayaku Co Ltd | Novel presplitting method |
| US20070267195A1 (en) * | 2006-05-18 | 2007-11-22 | Schlumberger Technology Corporation | Safety Apparatus for Perforating System |
| CN202494397U (en) * | 2011-11-11 | 2012-10-17 | 辽宁科技大学 | An environment-friendly circumferential explosive loading spacer |
| CN202393307U (en) * | 2011-12-20 | 2012-08-22 | 鞍钢集团矿业公司 | Radial air-separated charging device for hole blasting |
| CN203642813U (en) * | 2013-11-13 | 2014-06-11 | 鞍钢集团矿业公司 | Environment-friendly bilinear energy-gathered non-coupling explosive charging spacer |
| CN204757834U (en) * | 2015-07-03 | 2015-11-11 | 贵州大学 | Radial vacuum deck charge device of initiative release |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258583A (en) * | 2015-11-04 | 2016-01-20 | 贵州大学 | Active-pressure-releasing hole-bottom vacuum spaced charging structure and charging method thereof |
| CN105444624A (en) * | 2015-12-24 | 2016-03-30 | 贵州大学 | Vacuum cartridge bag structure capable of initiatively releasing pressure and accumulating energy during pre-splitting blasting and preparation method thereof |
| CN105571417A (en) * | 2015-12-28 | 2016-05-11 | 浙江科技学院 | Water-air combined medium non-coupled rapid explosive charging device for tunnel extra-large cross section deep-hole rock blasting fragmentation |
| CN105571417B (en) * | 2015-12-28 | 2017-03-08 | 浙江科技学院 | Water air combining medium for tunnel large section deep hole blasting broken rock does not couple quick-burning charge device |
| CN106404451A (en) * | 2016-06-07 | 2017-02-15 | 贵州大学 | Waterproof apparatus for automatic rock coring machine and installation method thereof |
| CN106643308A (en) * | 2017-02-10 | 2017-05-10 | 贵州大学 | Axial progressive secondary efficient blasting device and installation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104897013B (en) | 2017-08-01 |
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| GR01 | Patent grant | ||
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Granted publication date: 20170801 |