CN113624086A - Energy-gathered charging device for blasting demolition of thick steel structure factory building and blasting method - Google Patents
Energy-gathered charging device for blasting demolition of thick steel structure factory building and blasting method Download PDFInfo
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- CN113624086A CN113624086A CN202110952491.XA CN202110952491A CN113624086A CN 113624086 A CN113624086 A CN 113624086A CN 202110952491 A CN202110952491 A CN 202110952491A CN 113624086 A CN113624086 A CN 113624086A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 100
- 239000010959 steel Substances 0.000 title claims abstract description 100
- 238000005422 blasting Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000002360 explosive Substances 0.000 claims abstract description 97
- 238000010276 construction Methods 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 229910000617 Mangalloy Inorganic materials 0.000 claims description 4
- 230000037452 priming Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009931 harmful effect Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005474 detonation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/02—Particular applications of blasting techniques for demolition of tall structures, e.g. chimney stacks
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention provides an energy-gathering charging device and a blasting method for blasting demolition of a thick steel structure workshop, wherein an explosive energy-gathering box is arranged with an upward opening, a detonator lead through hole is formed in the explosive energy-gathering box, and a blasting detonator is installed at the detonator lead through hole; the energy-gathering box cover extends in the front-back direction and is arranged in a circular arc shape on a section vertical to the front-back direction, the convex surface of the energy-gathering box cover faces the explosive energy-gathering box and is arranged on the explosive energy-gathering box, and the concave surface of the energy-gathering box cover is used for being opposite to the fracture surface of the steel cylinder; the strength of the explosive energy-collecting box is not lower than the steel plate strength of the steel cylinder of the steel structure factory building, and the thickness of the explosive energy-collecting box is not smaller than the reserved thickness of the steel cylinder of the steel structure factory building after gas cutting. The technical scheme provided by the invention has the beneficial effects that: the blasting effect that ordinary energy-collecting cartridge bag can not reach can easily be realized, the thick steel construction factory building of waiting to demolish is accomplished smoothly, can reduce the harmful shock wave of explosion, improve the explosive utilization ratio, reduce construction cost, and the environmental protection benefit is obvious.
Description
Technical Field
The invention relates to the technical field of blasting demolition of steel structure plants, in particular to an energy-gathered charging device and a blasting method for blasting demolition of thick steel structure plants.
Background
At present, in the blast demolition of a steel structure factory building, an energy-collecting explosive bag is directly covered on a steel structure to be demolished or a wooden box and a plastic box are used for filling explosives, and the steel structure to be demolished is destroyed by using shock waves and explosive brisance generated by explosive explosion. The existing energy-gathering explosive package needs a large amount of explosive, generates large air shock waves and has low utilization rate of the explosive.
Disclosure of Invention
In view of the above, to solve the above problems, embodiments of the present invention provide a shaped charge device and a blasting method for blasting demolition of a thick steel structure factory.
The embodiment of the invention provides an energy-gathered charging device for blasting demolition of a thick steel structure factory building, which comprises:
the explosive energy-accumulating box is provided with a detonator lead through hole, and the detonator lead is provided with a priming detonator through hole;
the energy-gathering box cover extends in the front-back direction and is arranged in a circular arc shape on a cross section vertical to the front-back direction, the convex surface of the energy-gathering box cover faces the explosive energy-gathering box and is arranged on the explosive energy-gathering box, and the concave surface of the energy-gathering box cover is used for being opposite to the fracture surface of the steel cylinder;
the strength of the explosive energy-collecting box is not lower than the steel plate strength of the steel cylinder of the steel structure factory building, and the thickness of the explosive energy-collecting box is not smaller than the reserved thickness of the steel cylinder of the steel structure factory building after gas cutting.
Furthermore, an anti-static lining is arranged in the explosive energy gathering box and on one side of the convex surface of the energy gathering box cover.
Furthermore, the lining is made of antistatic plastic.
Further, a double-faced rubber ring is arranged in the detonator lead through hole.
Furthermore, the explosive energy-gathering box is made of manganese steel.
Further, the explosive energy-gathering box is arranged in a cuboid shape.
Further, the thickness of the explosive energy gathering box is 8-10 mm.
Furthermore, the energy-gathering box cover is made of a steel plate.
Furthermore, the thickness of the energy-gathering box cover is 0.4-0.6 mm.
The embodiment of the invention also provides a blasting method, and the energy-gathered charging device based on the blasting demolition of the steel structure factory building comprises the following steps:
s1, actually measuring the strength and thickness of each charging part of a steel cylinder of a thick steel structure factory building according to the blasting demolition design scheme, and further determining the strength and thickness of the explosive energy-gathering box;
s2, according to the blasting demolition design scheme, calculating the explosive amount of each explosive loading part, and determining the geometric size of the explosive energy-gathering box according to the explosive amount to be loaded;
s3, manufacturing an explosive energy-gathering box and an energy-gathering box cover according to requirements, putting the explosive into the explosive energy-gathering box, forming an arc surface matched with the energy-gathering box cover on the top surface of the explosive, and installing the energy-gathering box cover on the explosive energy-gathering box;
and S4, mounting the energy-gathering charge device in the steel column body, enabling the concave surface of the energy-gathering box cover to be opposite to the fracture surface of the steel column body, and enabling the extending direction of the energy-gathering box cover to be the same as the extending direction of the fracture surface of the steel column body.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: because the energy-accumulating box cover is arranged in a circular arc shape, the energy-accumulating effect of the energy-accumulating holes of the energy-accumulating box cover is utilized, under the detonation of the explosive, the circular arc-shaped energy-accumulating box cover generates high-speed metal jet flow, energy is accumulated on a line, so that the thick steel structure of the steel cylinder is cut off, the blasting effect which cannot be achieved by the common energy-accumulating explosive bag can be easily realized, a workshop with the thick steel structure to be dismantled is smoothly completed, the harmful shock wave of the explosion can be reduced, the utilization rate of the explosive is improved, the construction cost is reduced, the harmful effect generated by the blasting is well controlled, and the environmental protection benefit is obvious.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a shaped charge device for blasting demolition of a thick steel structure factory building, provided by the invention;
fig. 2 is a schematic cross-sectional view of the shaped charge installation of the demolition blasting of the thick steel structure plant of fig. 1 installed in a steel column.
In the figure: the explosive energy-gathering box comprises an explosive energy-gathering box 1, a detonator lead through hole 11, a detonating detonator 12, an energy-gathering box cover 2, an anti-static lining 3, a double-sided rubber ring 4, a steel cylinder 100, a steel cylinder fracture surface 200 and an explosive 300.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, an embodiment of the invention provides a shaped charge device for blasting demolition of a thick steel structure factory building, which comprises an explosive shaped box 1 and an shaped box cover 2.
The explosive energy-accumulating box 1 is arranged with an opening upwards, a detonator lead through hole 11 is formed in the explosive energy-accumulating box 1, a priming detonator 12 is installed at the detonator lead through hole 11, and a double-sided rubber ring 4 is installed in the detonator lead through hole 11 to protect a detonator leg wire from being damaged. In this embodiment, the liner is made of antistatic plastic. Specifically, the explosive energy-collecting box 1 is arranged in a cuboid shape and is convenient to manufacture and install, and the explosive energy-collecting box 1 is made of manganese steel and is 8-10mm thick. The strength of the explosive energy-collecting box 1 is not lower than the steel plate strength of the steel cylinder 100 of the steel structure factory building, and the thickness of the explosive energy-collecting box 1 is not smaller than the reserved thickness of the steel cylinder 100 of the steel structure factory building after gas cutting.
The energy-gathering box cover 2 extends forwards and backwards, and is arranged in a circular arc shape on a cross section vertical to the front and back direction, the convex surface of the energy-gathering box cover 2 faces the explosive energy-gathering box 1 and is installed on the explosive energy-gathering box 1, and the concave surface of the energy-gathering box cover 2 is used for being opposite to the steel cylinder fracture surface 200. Specifically, the energy-gathering box cover 2 is made of a steel plate, and the thickness is 0.4-0.6 mm. Be used for installing explosive 300 in the explosive energy gathering box 1, in the explosive energy gathering box 1 with 2 convex surface sides of energy gathering lid all are equipped with antistatic lining 3 to ensure the safety of detonator explosive 300 during the installation.
Based on the energy-gathered charging device for blasting demolition of the thick steel structure factory building, the invention also provides a blasting method, which comprises the following steps:
s1, actually measuring the strength and the thickness of each charging part of the steel column 100 of the thick steel structure factory building according to the blasting demolition design scheme, and further determining the strength and the thickness of the explosive energy collecting box 1. The strength of the explosive energy-collecting box 1 is not lower than the steel plate strength of the steel cylinder 100 of the steel structure factory building, and the thickness of the explosive energy-collecting box 1 is not smaller than the reserved thickness of the steel cylinder 100 of the steel structure factory building after gas cutting.
And S2, calculating the explosive amount of each explosive charging part according to the blasting demolition design scheme, and determining the geometric dimension of the explosive energy-gathering box 1 according to the explosive amount to be charged.
S3, manufacturing an explosive energy-gathering box 1 and an energy-gathering box cover 2 according to requirements, placing an explosive 300 into the explosive energy-gathering box 1, forming an arc surface matched with the energy-gathering box cover 2 on the top surface of the explosive 300, and installing the energy-gathering box cover 2 on the explosive energy-gathering box 1. When the explosive energy-collecting box 1 is charged, blasting operators strictly comply with blasting safety regulations (GB 6722-2014).
Wherein, it specifically includes to make explosive energy concentrating box 1 and energy concentrating box lid 2 as required:
and S31, selecting steel plates meeting the requirements, counting and numbering the steel plates of all sizes according to the determined geometric dimension of the explosive energy-gathering box 1, cutting the steel plates in a mechanical cutting mode, and marking the cut steel plates.
S32, selecting a steel plate for manufacturing the energy-gathering box cover 2, processing the steel plate into an arc shape according to design requirements, and detecting the processed energy-gathering box cover 2 to enable the steel plate to meet the design requirements.
And S33, surveying and purchasing the double-sided rubber ring 4, selecting a steel plate on one end face of the explosive energy-gathering box 1, and processing a detonator lead through hole 11 on the steel plate by using an electric hand drill according to the size of the double-sided rubber ring 4.
And S34, sequentially welding the explosive energy-gathering boxes 1 according to the serial numbers in a double-sided welding mode. When the explosive energy gathering box 1 is welded, an electric welder strictly complies with the acceptance criteria of construction quality of steel structure engineering (GB50205-2020) and the technical regulations of welding of building steel structures (JGJ 81).
And S35, after welding, mounting the double-sided rubber ring 4 at the detonator lead through hole 11, and then mounting the priming detonator 12. The size of the detonator lead through hole 11 needs to be matched with the double-sided rubber ring 4, and the smooth passing of the detonator leg wire is ensured.
S36, installing an antistatic lining 3 in the convex side of the explosive energy-gathering box 1 and the energy-gathering box cover 2.
In the embodiment, a rectangular steel explosive energy-gathering box 1 is manufactured by processing 9mm manganese steel, an energy-gathering box cover 2 is manufactured by using a 0.5mm steel plate, a 6-8 mm detonator lead through hole 11 is formed in one end of the explosive energy-gathering box 1, a double-sided rubber ring 4 is arranged at the position of the detonator lead through hole 11 to protect a detonator leg wire from being damaged, and then an antistatic plastic lining is arranged.
And S4, installing the energy-gathering charge device in the steel cylinder 100, enabling the concave surface of the energy-gathering box cover 2 to be opposite to the fracture surface 200 of the steel cylinder, and enabling the extending direction of the energy-gathering box cover 2 to be the same as the extending direction of the fracture surface 200 of the steel cylinder.
Specifically, at 1 bottom of explosive energy-collecting box and side pad support piece, local materials are used, and bottom support piece can be for soil sack or sand bag etc. makes energy-collecting charging device keep leveling, and side support piece can be for flitch etc. to firmly support explosive energy-collecting box 1 and wait to demolish steel construction factory building steel cylinder 100.
The extending direction of the energy-gathering box cover 2 is perpendicular to the extending direction of the steel cylinder 100 and is the same as the extending direction of the fracture surface 200 of the steel cylinder, so that the high-speed metal jet formed by the energy-gathering box cover 2 is perpendicular to the extending direction of the steel cylinder 100.
Because the energy-accumulating box cover 2 is arranged in a circular arc shape, the energy-accumulating effect of the energy-accumulating holes of the energy-accumulating box cover 2 is utilized, under the detonation of the explosive 300, the circular arc-shaped energy-accumulating box cover 2 generates high-speed metal jet flow which is accumulated on a line, so that the thick steel structure of the steel cylinder 100 is cut off, the blasting effect which cannot be achieved by a common energy-accumulating explosive bag can be easily realized, a workshop with the thick steel structure to be dismantled is smoothly completed, harmful blast waves caused by the explosion can be reduced, the utilization rate of the explosive 300 is improved, the construction cost is reduced, the harmful effect generated by the blasting is well controlled, and the environmental protection benefit is obvious.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a thick steel construction factory building blasting is demolishd and is gathered can charging means which characterized in that includes:
the explosive energy-accumulating box is provided with a detonator lead through hole, and the detonator lead is provided with a priming detonator through hole;
the energy-gathering box cover extends in the front-back direction and is arranged in a circular arc shape on a cross section vertical to the front-back direction, the convex surface of the energy-gathering box cover faces the explosive energy-gathering box and is arranged on the explosive energy-gathering box, and the concave surface of the energy-gathering box cover is used for being opposite to the fracture surface of the steel cylinder;
the strength of the explosive energy-collecting box is not lower than the steel plate strength of the steel cylinder of the steel structure factory building, and the thickness of the explosive energy-collecting box is not smaller than the reserved thickness of the steel cylinder of the steel structure factory building after gas cutting.
2. The shaped charge device for blasting demolition of a thick steel structure factory building according to claim 1, wherein an antistatic inner liner is provided in each of the explosive shaped box and the convex side of the shaped box cover.
3. The shaped charge for blasting demolition of a thick steel structure factory building of claim 2, wherein said liner is made of antistatic plastic.
4. The shaped charge for blasting demolition of a thick steel structural plant according to claim 1, wherein the detonator lead passing hole is internally provided with a double-sided rubber ring.
5. The shaped charge device for blasting demolition of a thick steel structure factory building according to claim 1, wherein the explosive shaped box is made of manganese steel.
6. The shaped charge for demolition blasting of a thick steel structure factory building of claim 1, wherein said explosive shaped box is in the shape of a cuboid.
7. The shaped charge for blasting demolition of a thick steel structure factory building of claim 1, wherein the explosive shaped box has a thickness of 8-10 mm.
8. The shaped charge device for blasting demolition of a thick steel structure factory building according to claim 1, wherein the material of the shaped box cover is steel plate.
9. The shaped charge for blasting demolition of a thick steel structure factory building of claim 1, wherein the thickness of said shaped charge box cover is 0.4-0.6 mm.
10. A blasting method, characterized in that the shaped charge device for blasting demolition of a thick steel structure factory building based on any one of claims 1 to 9 comprises the following steps:
s1, actually measuring the strength and thickness of each charging part of a steel cylinder of a thick steel structure factory building according to the blasting demolition design scheme, and further determining the strength and thickness of the explosive energy-gathering box;
s2, according to the blasting demolition design scheme, calculating the explosive amount of each explosive loading part, and determining the geometric size of the explosive energy-gathering box according to the explosive amount to be loaded;
s3, manufacturing an explosive energy-gathering box and an energy-gathering box cover according to requirements, putting the explosive into the explosive energy-gathering box, forming an arc surface matched with the energy-gathering box cover on the top surface of the explosive, and installing the energy-gathering box cover on the explosive energy-gathering box;
and S4, mounting the energy-gathering charge device in the steel column body, enabling the concave surface of the energy-gathering box cover to be opposite to the fracture surface of the steel column body, and enabling the extending direction of the energy-gathering box cover to be the same as the extending direction of the fracture surface of the steel column body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952491.XA CN113624086A (en) | 2021-08-19 | 2021-08-19 | Energy-gathered charging device for blasting demolition of thick steel structure factory building and blasting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952491.XA CN113624086A (en) | 2021-08-19 | 2021-08-19 | Energy-gathered charging device for blasting demolition of thick steel structure factory building and blasting method |
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| CN113624086A true CN113624086A (en) | 2021-11-09 |
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| CN202110952491.XA Pending CN113624086A (en) | 2021-08-19 | 2021-08-19 | Energy-gathered charging device for blasting demolition of thick steel structure factory building and blasting method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5705768A (en) * | 1992-12-24 | 1998-01-06 | Dyno Nobel Asia Pacific Limited | Shaped charges with plastic liner, concave recess and detonator means |
| CN201909590U (en) * | 2010-11-02 | 2011-07-27 | 山东泰丰矿业集团有限公司 | New box for mining explosive |
| CN108827094A (en) * | 2018-07-04 | 2018-11-16 | 中国人民解放军陆军工程大学 | The demolition blasting device of H profile steel workshop and blasting method |
| CN109099806A (en) * | 2018-10-22 | 2018-12-28 | 中国人民解放军陆军工程大学 | A kind of photoface exploision or presplit blasting blast cutting device |
| CN110701968A (en) * | 2019-08-30 | 2020-01-17 | 中煤科工集团淮北爆破技术研究院有限公司 | Slope presplitting blasting device and construction method thereof |
| CN111043912A (en) * | 2019-12-18 | 2020-04-21 | 山东科技大学 | Efficient combined energy-gathering directional blasting device and using method thereof |
| CN112595191A (en) * | 2021-01-07 | 2021-04-02 | 保利新联爆破工程集团有限公司 | Energy-gathered blasting method for high-voltage line iron tower |
| CN112797848A (en) * | 2020-12-31 | 2021-05-14 | 中国矿业大学(北京) | Energy-gathering explosive package device and roadway blasting forming method |
-
2021
- 2021-08-19 CN CN202110952491.XA patent/CN113624086A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5705768A (en) * | 1992-12-24 | 1998-01-06 | Dyno Nobel Asia Pacific Limited | Shaped charges with plastic liner, concave recess and detonator means |
| CN201909590U (en) * | 2010-11-02 | 2011-07-27 | 山东泰丰矿业集团有限公司 | New box for mining explosive |
| CN108827094A (en) * | 2018-07-04 | 2018-11-16 | 中国人民解放军陆军工程大学 | The demolition blasting device of H profile steel workshop and blasting method |
| CN109099806A (en) * | 2018-10-22 | 2018-12-28 | 中国人民解放军陆军工程大学 | A kind of photoface exploision or presplit blasting blast cutting device |
| CN110701968A (en) * | 2019-08-30 | 2020-01-17 | 中煤科工集团淮北爆破技术研究院有限公司 | Slope presplitting blasting device and construction method thereof |
| CN111043912A (en) * | 2019-12-18 | 2020-04-21 | 山东科技大学 | Efficient combined energy-gathering directional blasting device and using method thereof |
| CN112797848A (en) * | 2020-12-31 | 2021-05-14 | 中国矿业大学(北京) | Energy-gathering explosive package device and roadway blasting forming method |
| CN112595191A (en) * | 2021-01-07 | 2021-04-02 | 保利新联爆破工程集团有限公司 | Energy-gathered blasting method for high-voltage line iron tower |
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Application publication date: 20211109 |