CN113154970A - Novel perforating and joint-cutting energy-gathering medicine bag - Google Patents
Novel perforating and joint-cutting energy-gathering medicine bag Download PDFInfo
- Publication number
- CN113154970A CN113154970A CN202110350398.1A CN202110350398A CN113154970A CN 113154970 A CN113154970 A CN 113154970A CN 202110350398 A CN202110350398 A CN 202110350398A CN 113154970 A CN113154970 A CN 113154970A
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- China
- Prior art keywords
- explosive
- energy
- gathering
- axial
- blasting
- Prior art date
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- Pending
Links
- 239000003814 drug Substances 0.000 title claims description 15
- 238000004080 punching Methods 0.000 claims 2
- 239000002360 explosive Substances 0.000 abstract description 32
- 238000005422 blasting Methods 0.000 abstract description 25
- 239000011435 rock Substances 0.000 abstract description 14
- 238000009412 basement excavation Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000005474 detonation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention relates to a novel perforating and joint-cutting energy-gathering explosive package which comprises an explosive tube axially placed in a blast hole, wherein a plurality of holes with the same size are symmetrically arranged along the outer peripheral wall of the explosive tube, and a plurality of longitudinal energy-gathering joint cuts are arranged on one side wall of the explosive tube. On the basis of the traditional lancing explosive package method, the invention improves the problems of insufficient rock mass breakage and the like when the mountain tunnel is excavated by the method. On one hand, rock masses outside the excavation contour line of the mountain tunnel have no obvious blasting damage after blasting, and on the other hand, the rock masses can be controlled to be broken into the block sizes required to be transported and loaded.
Description
The technical field is as follows:
the invention relates to a blasting device for controlling the rock crack development direction in the field of rock blasting. The method is mainly applied to blasting of peripheral holes in mountain excavation and controlling the overbreak and the underexcavation in the mountain blasting.
Background art:
with the increase of the technical quantity of modern engineering, the blasting technology is widely applied to various fields, and in the excavation construction of a mountain tunnel, when a traditional blasting method is adopted for construction, great underexcavation and overbreak are likely to be caused, so that the increase of post-treatment cost is caused, the rock mass is damaged, and the stability of the rock mass is reduced. In order to reduce the overbreak and underexcavation caused by the excavation of the mountain tunnel, the application of blasting technology is controlled. Common controlled blasting techniques include slot blasting, slotted charge blasting, shaped charge blasting, and the like.
The blasting of the energy-gathered explosive package is to convert the explosive energy of the explosive into the kinetic energy of the shaped charge liner according to the energy-gathered jet principle, and replace the gas jet with the metal jet, thereby improving the blasting power of the energy-gathered explosive package. The directional fracture blasting of shaped charge also needs to study the geometric shape of the shaped cavity, the variety and the property of the explosive, the material of the shaped cover and other problems from the mechanism.
The slitting explosive bag has the advantages of simple charging structure, easy operation, quick construction and the like in rock fracture blasting. In recent years, the method is applied to the excavation of underground chambers of mines and generates obvious economic benefits. However, when the conventional axial lancing explosive charge is used for blasting, the rock mass within the blasting wheel line cannot be completely crushed.
The invention content is as follows:
aiming at the defects of the traditional lancing explosive package, the invention provides a novel perforating and lancing energy-gathering explosive package which can be applied to smooth blasting.
Preferably, the novel perforating and slitting energy-gathered explosive package provided by the invention comprises an explosive tube axially placed in a blast hole, a plurality of holes are symmetrically formed along the outer peripheral wall of the explosive tube, and a plurality of longitudinal energy-gathered slits are formed in one side wall of the explosive tube.
Preferably, the novel perforating and slitting energy-gathered explosive package provided by the invention has the advantages that the longitudinal energy-gathered slits are distributed at equal intervals along the bottom wall of the explosive tube, and the longitudinal energy-gathered slits are not cut through along the bottom wall of the explosive tube.
Preferably, the novel perforating and slitting energy-gathered explosive package provided by the invention has the advantages that the longitudinal energy-gathered slits are made of copper sheets, the width of the copper sheets is 1 cm-1.5 cm, and the distance between the longitudinal energy-gathered slits is 10 cm.
Preferably, the novel perforating and slitting energy-gathered medicine package provided by the invention has the advantages that the axial slits penetrate through the middle part of the side wall of the medicine tube, and the two end parts are not perforated.
Preferably, the novel perforating and slitting energy-gathered medicine package provided by the invention has the axial perforating radius of 0.5-0.75 cm and the axial hole distance of 5 cm.
The invention has the beneficial effects that:
the invention improves the problem of insufficient rock mass crushing in the excavation of the mountain tunnel on the basis of the traditional slitting explosive package method. On one hand, rock masses outside the tunnel excavation contour line have no obvious blasting damage after blasting, and on the other hand, the rock masses can be controlled to be broken into the block degrees required to be transported and loaded.
Description of the drawings:
figure 1 is a schematic cross-sectional view of a novel perforated and slit shaped charge.
FIG. 2 is a schematic view of a slit tube with axial perforations and longitudinal slits
Figure 3 is a top view of a novel perforated slit shaped charge.
In the figure: 1-blast hole; 2-an explosive; 3-medicine tube; 4-axial slot; 5-copper sheet; 6-longitudinal energy gathering cutting.
The specific implementation mode is as follows:
the invention is further illustrated by the following specific examples.
As shown in figures 1 and 2, the novel perforating and cutting energy-gathered explosive package comprises an explosive tube 3 axially placed in a blast hole 1, a plurality of axial holes 4 are symmetrically formed along the outer peripheral wall of the explosive tube 3, and a plurality of longitudinal energy-gathered cutting seams 6 are formed on one side wall of the explosive tube 3.
Wherein, the axial slot is symmetrically distributed along the two sides of the side wall of the medicine tube, the axial slot is perforated along the middle part of the side wall of the medicine tube, and the two end parts are not perforated. The longitudinal energy-gathering cutting seams are distributed at equal intervals along the bottom wall of the medicine tube, and the longitudinal energy-gathering cutting seams are not cut through along the bottom wall of the medicine tube. The distance between the longitudinal energy-gathering slits is 10 cm. The width of the axial hole seam 4 is not easy to be overlarge, preferably 0.5 cm-1 cm.
As shown in fig. 3, in the present structure, a longitudinal slit 5 is formed in the bottom of a steel pipe in addition to an axial slit pipe 3. After the explosive in the pipe is blasted, the detonation product can generate local concentrated load at the axial hole seam 4, so that the rock body generates radial cracks in a preset area and generates a smooth excavation contour line. Meanwhile, the detonation product can also generate metal jet flow at the longitudinal energy-gathering kerf 5, and the metal jet flow is used for replacing gas jet flow, so that the blasting power of the explosive package is improved, and the rock mass within the tunnel excavation profile line is crushed into the block size suitable for the loading and transporting requirement.
When the method is specifically implemented, the inner diameter and the outer diameter of the steel pipe are determined according to the explosive quantity and the blast hole diameter of blasting design. A plurality of holes with the same radius are symmetrically punched on a steel pipe, a certain number of longitudinal cutting seams are cut at the lower part of the steel pipe at intervals according to a certain distance, copper sheets with proper sizes are installed, and explosives 2 are placed in the cutting seams with axial holes and longitudinal cutting seams. The blasting device is placed in the blast hole and is detonated.
Claims (5)
1. The utility model provides a novel joint-cutting that punches gathers can cartridge bag, includes the pencil that the axial was placed, follows the pencil periphery wall is the symmetry in the axial is equipped with the aperture of quantity such as, its characterized in that: a plurality of longitudinal energy-gathering cutting seams are arranged on one side wall of the medicine tube.
2. The novel punch and slit shaped charge of claim 1, wherein: the longitudinal energy-gathering cutting seams are distributed at equal intervals along the bottom wall of the medicine tube, and the longitudinal energy-gathering cutting seams are not cut through along the bottom wall of the medicine tube.
3. The novel punch and slit shaped charge of claim 2, wherein: the width of the longitudinal energy-gathering cutting seams is 1 cm-1.5 cm, and the distance between the longitudinal energy-gathering cutting seams is 10 cm.
4. The novel punch and slit shaped charge of claim 1, wherein: the axial punching holes are symmetrically distributed along two sides of the side wall of the medicine tube, the axial hole seams are punched through along the middle part of the side wall of the medicine tube, and the two end parts are not punched.
5. The novel punch and slit shaped charge of claim 1, wherein: the axial punching radius is 0.5-0.75 cm, and the axial pitch is 5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110350398.1A CN113154970A (en) | 2021-03-31 | 2021-03-31 | Novel perforating and joint-cutting energy-gathering medicine bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110350398.1A CN113154970A (en) | 2021-03-31 | 2021-03-31 | Novel perforating and joint-cutting energy-gathering medicine bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113154970A true CN113154970A (en) | 2021-07-23 |
Family
ID=76885857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110350398.1A Pending CN113154970A (en) | 2021-03-31 | 2021-03-31 | Novel perforating and joint-cutting energy-gathering medicine bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113154970A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109304A (en) * | 2010-11-30 | 2011-06-29 | 中国矿业大学(北京) | Directional rock blasting crack propagation method and device |
| CN102901414A (en) * | 2012-11-01 | 2013-01-30 | 中南大学 | Device special for in-hole positioning, orientating and propelling of tunnel directional fracture blasting shaped charge |
| CN204268978U (en) * | 2014-11-12 | 2015-04-15 | 安徽理工大学 | A kind of energy collecting type powder column housing |
| CN208282701U (en) * | 2018-06-06 | 2018-12-25 | 西安建筑科技大学 | A kind of segment algorithm applied to photoface exploision |
| KR101972124B1 (en) * | 2018-11-14 | 2019-04-24 | 대림산업(주) | Deck charge method for tunnel blasting |
| WO2020024558A1 (en) * | 2018-08-03 | 2020-02-06 | 惠州市兴鲁节能科技有限公司 | Tunnel smooth blasting uncoupled shaped charge device and charge method |
-
2021
- 2021-03-31 CN CN202110350398.1A patent/CN113154970A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109304A (en) * | 2010-11-30 | 2011-06-29 | 中国矿业大学(北京) | Directional rock blasting crack propagation method and device |
| CN102901414A (en) * | 2012-11-01 | 2013-01-30 | 中南大学 | Device special for in-hole positioning, orientating and propelling of tunnel directional fracture blasting shaped charge |
| CN204268978U (en) * | 2014-11-12 | 2015-04-15 | 安徽理工大学 | A kind of energy collecting type powder column housing |
| CN208282701U (en) * | 2018-06-06 | 2018-12-25 | 西安建筑科技大学 | A kind of segment algorithm applied to photoface exploision |
| WO2020024558A1 (en) * | 2018-08-03 | 2020-02-06 | 惠州市兴鲁节能科技有限公司 | Tunnel smooth blasting uncoupled shaped charge device and charge method |
| KR101972124B1 (en) * | 2018-11-14 | 2019-04-24 | 대림산업(주) | Deck charge method for tunnel blasting |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210723 |