CN108759596B - Flexible energy-gathered blasting pipe cutting device and using method thereof - Google Patents
Flexible energy-gathered blasting pipe cutting device and using method thereof Download PDFInfo
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- CN108759596B CN108759596B CN201810545628.8A CN201810545628A CN108759596B CN 108759596 B CN108759596 B CN 108759596B CN 201810545628 A CN201810545628 A CN 201810545628A CN 108759596 B CN108759596 B CN 108759596B
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- 238000005422 blasting Methods 0.000 title claims abstract description 82
- 238000005520 cutting process Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002360 explosive Substances 0.000 claims abstract description 29
- 230000000694 effects Effects 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000013461 design Methods 0.000 description 4
- 238000005474 detonation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000926 A-3 tool steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Classifications
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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
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- 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
-
- 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
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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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a flexible energy-accumulating blasting cutting pipe device which comprises a soft round pipe, a corrugated energy-accumulating cover, an explosive fuse and a detonating device, wherein the soft round pipe is provided with a cutting seam, the corrugated energy-accumulating cover is arranged in the soft round pipe and at a position corresponding to the cutting seam, the explosive is arranged between the soft round pipe and the corrugated energy-accumulating cover, one end of the explosive fuse is connected with the middle position of the explosive, the other end of the explosive fuse is connected with the detonating device, and the corrugated energy-accumulating cover is arranged in a semicircular shape. The invention belongs to the technical field of fine control blasting, and particularly provides a flexible energy-accumulating blasting cutting pipe device which is composed of a flexible PVC hose and a corrugated energy-accumulating cover. Meanwhile, the invention aims to provide a using method aiming at the flexible energy-gathered blasting cutting pipe.
Description
Technical Field
The invention belongs to the technical field of fine control blasting, and particularly relates to a flexible energy-gathered blasting cutting pipe device and a using method thereof.
Background
The energy-gathering phenomenon of explosive explosion has been discovered as early as 18 th century, and it has not really attracted people's attention until world war II, and it has been used by the military department in war to produce various kinds of projectiles with high killing power. The research on the energy-gathering effect is started in China in the 50 th of the 20 th century, and after the 80 th of the century, the research on the energy-gathering effect is more and more abundant thanks to the development of experimental means and computer calculation, the application field of the energy-gathering effect is not limited to military industry any more, and the energy-gathering effect is more and more widely used in the field of civil blasting engineering. At present, the energy-gathering blasting technology is widely applied to the fields of oil exploitation, seismic exploration blasting, sheet metal processing, steel structure building (structure) demolition, smooth surface and presplitting control blasting and the like.
Although the energy-gathered blasting technology is widely applied in the field of the existing civil blasting engineering, the problems which are not solved in the use still exist, for example, in the blasting demolition of steel pipe concrete structures, steel pipes and the like, the linear energy-gathered cover cannot be attached to the linear energy-gathered cover so as not to achieve the purpose of accurate blasting cutting, and only a blasting method with multiple macropores and multiple charges can be adopted; in deep hole slope blasting, because the direction of the hole can not be accurately controlled during drilling, and the actual blast hole is not straight, when the methods such as kerf explosive package blasting and PVC energy-gathering tube blasting are adopted, the explosive package structure is rigid, so that the explosive can not be smoothly charged in the explosive charging process. Meanwhile, based on the development concepts of science, green and modernization, scientists in China propose a 'fine blasting' concept, namely, explosive energy release, medium crushing, throwing and other processes are carried out through quantitative blasting design, elaborate blasting construction and fine blasting management, the expected blasting effect is achieved, the control of the harmful effect of blasting is realized, and finally safe, reliable, technically advanced, green, environment-friendly and economical and reasonable blasting operation is realized. In view of this, based on classical energy-gathered blasting theory, it is significant to carry out reasonable structural design, optimization powder charge.
Disclosure of Invention
Aiming at the problems in the existing energy-accumulating blasting, the invention provides a flexible energy-accumulating blasting cutting pipe device which is composed of a flexible PVC hose and a corrugated energy-accumulating cover, is convenient to use and wide in application range, and not only can be applied to the field of energy-accumulating blasting cutting of any shape, but also can be applied to deep hole control blasting. Meanwhile, the invention aims to provide a using method aiming at the flexible energy-gathered blasting cutting pipe.
The technical scheme adopted by the invention is as follows: the invention relates to a flexible energy-accumulating blasting cutting pipe device which comprises a soft round pipe, a corrugated energy-accumulating cover, an explosive fuse and an igniter, wherein the soft round pipe is provided with a cutting seam, the corrugated energy-accumulating cover is arranged in the soft round pipe and at a position corresponding to the cutting seam, the explosive is arranged between the soft round pipe and the corrugated energy-accumulating cover, one end of the explosive fuse is connected with the middle position of the explosive, the other end of the explosive fuse is connected with the igniter, and the corrugated energy-accumulating cover is arranged in a semicircular shape.
The explosive is a common industrial explosive and can also be selected from high-energy explosives for the military industry.
The detonating cord is a common industrial detonating cord, and a safe detonating cord can be selected according to the requirements of special use occasions.
Further, the slits are axially symmetrically distributed or unidirectionally distributed along the soft round pipe. The soft round pipe can select a symmetrical axial joint cutting and a unidirectional joint cutting according to the use condition, and when the soft round pipe is used for deep hole smooth surface or presplitting blasting, the soft round pipe with the symmetrical axial joint cutting is selected; when blasting and cutting building, etc., the soft round pipe with one-way cutting seam is selected.
Preferably, the single length of the soft round pipe is 100m, the soft round pipe can be cut on site according to requirements during use, and the diameter of the soft round pipe is 40-100 mm.
Preferably, the slits are arranged at intervals along the trend of the soft round tube, the length of the slits is 400mm, and the length of the non-slit slits at intervals in the middle is 100 mm. So as to ensure the integrity of the soft round pipe in the installation and transportation processes.
Preferably, the width of the cutting seam is 6-20 mm, and the width of the cutting seam is 0.15-0.3 times of the diameter of the hose. And determining according to the diameter of the selected soft circular tube, wherein the larger the diameter of the soft circular tube is, the larger the width of the corresponding cutting seam is.
Preferably, the angle of the semicircle of the corrugated energy gathering cover is 100-120 degrees. The corrugated energy-accumulating cover is similar to a washing machine drain pipe in shape, and is different in that the corrugated energy-accumulating cover is in a semicircular shape, the angle of the corrugated energy-accumulating cover is about 100-120 degrees, and the corrugated energy-accumulating cover can ensure that the formed flexible energy-accumulating blasting cutting pipe device is a flexible deformable pipe, so that the flexible energy-accumulating blasting cutting pipe device is convenient to apply in different occasions.
Further, the radius of the semicircle of the corrugated energy gathering cover is 10-40 mm. And determining according to the diameter of the selected soft round pipe, wherein the larger the diameter of the soft round pipe is, the larger the radius of the corresponding cut corrugated energy-gathering cover is.
Further, the thickness of the corrugated energy gathering cover is 0.1-1 mm.
Furthermore, the soft round tube is made of PVC materials, and the corrugated energy gathering cover is made of copper.
The invention also discloses a using method of the flexible energy-accumulating blasting cutting pipe device, which comprises a using method for demolishing a building (structure) and a using method for deep hole blasting, and respectively comprises the following steps:
the use method for demolition blasting of a building (structure) comprises the following steps:
(1) determining a cutting position according to the blasting construction scheme and marking;
(2) winding the flexible energy-gathered blasting cutting pipe device with the one-way joint cutting at a marking position and fixing the device, and simultaneously ensuring that the joint cutting direction is vertical to the object to be cut;
(3) connecting a detonating cord with a detonating device and detonating, and cutting and breaking the blasted object under the action of energy-gathered jet after blasting;
the use method for deep hole blasting comprises the following steps:
(1) punching: according to the requirements of the blasting construction scheme, a drilling machine is used for drilling blast holes in the rock mass to be blasted;
(2) charging: loading the selected flexible energy-gathered blasting cutting pipe device with the bidirectional joint cutting into a blast hole by using self weight and fixing;
(3) and (3) blocking: using a plugging material to plug blast holes;
(4) blasting: connecting a detonating cord and a detonating device and detonating, wherein after blasting, under the action of energy-gathered jet, an initial crack is formed on a rock mass contour line, and then under the action of detonation gas, the initial crack is expanded along the contour line to finally form a smooth fracture surface; meanwhile, the wall protection effect of the slit hose is achieved, the half-hole mark rate of the blast hole is high, and the surrounding rock protection effect of the blast hole wall is excellent.
The invention with the structure has the following beneficial effects: the flexible energy-accumulating blasting cutting pipe device is reasonable in structural design, can be bent randomly according to the specific conditions of an exploded object, and overcomes the defect that the application of the traditional rigid energy-accumulating blasting device is limited by the appearance of the exploded object. The invention can also be used in deep hole blasting, and solves the problem that the rigid energy-accumulating blasting device can not be smoothly loaded into a blast hole due to the fact that the hole drilling is not straight. Meanwhile, the invention closely combines the modern fine blasting concept and the classic blasting theory and reasonably designs the charging structure so as to achieve safe, reliable, advanced, economical and reasonable blasting construction operation.
Drawings
FIG. 1 is a schematic structural diagram of a flexible energy-accumulating blasting cutting pipe device according to the invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a top view of one embodiment of a flexible energy accumulating burst cutting tube apparatus of the present invention;
FIG. 4 is a top view of another embodiment of the flexible energy accumulating burst cutting tube apparatus of the present invention;
fig. 5 is a schematic view of the whole structure of the flexible energy-accumulating blasting cutting pipe device.
In the figure: 1. the explosive comprises a soft round pipe, 2 a corrugated energy gathering cover, 3 an explosive, 4 and an explosion fuse.
Detailed Description
The technical solutions of the present invention will be further described in detail with reference to specific implementations, and all the portions of the present invention not described in detail are the prior art.
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-5, the flexible energy-gathered blasting cutting pipe device of the invention comprises a soft round pipe 1, a corrugated energy-gathered cover 2, an explosive 3, an explosive fuse 4 and a blasting device, wherein the soft round pipe 1 is provided with a cutting slit, the corrugated energy-gathered cover 2 is arranged in the soft round pipe 1 and at a position corresponding to the cutting slit, the explosive 3 is arranged between the soft round pipe 1 and the corrugated energy-gathered cover 2, one end of the explosive fuse 4 is connected with the middle position of the explosive 3, the other end of the explosive fuse 4 is connected with the blasting device, and the corrugated energy-gathered cover 2 is arranged in a semicircular shape.
The specific embodiment is as follows: the invention relates to application of a flexible energy-gathered blasting cutting pipe device in steel structure demolition blasting.
The blasting cutting object of the embodiment is a steel pipe with the diameter of 25cm, the steel pipe is made of A3 steel, and the thickness of the pipe wall is 2 cm. Because the pipe wall is thicker, the diameter of the soft round pipe 1 of the selected flexible energy-gathering blasting cutting pipe device is 60mm, and the thickness of the corrugated energy-gathering device 2 is 0.6 mm. Firstly, marking the position to be cut on a steel pipe, then winding a soft round pipe 1 of a flexible energy-gathered blasting cutting pipe device which is produced in advance on the blasted steel pipe, wherein the cutting direction is vertical to the steel pipe during winding. And connecting the detonating cord 4 with the detonating device for detonation, and cutting and breaking the steel pipe under the action of the energy-gathered jet after the detonation to form two complete parts.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. A flexible energy-accumulating blasting cutting pipe device is characterized by comprising a soft round pipe, a corrugated energy-accumulating cover, an explosive fuse and a blasting device, wherein the soft round pipe is provided with a cutting seam;
the cutting seams are axially and symmetrically distributed or unidirectionally distributed along the soft round pipe;
the length of a single soft round pipe is 100m, and the diameter of the soft round pipe is 40-100 mm;
the cutting seams are arranged at intervals along the trend of the soft round pipe, the length of each cutting seam is 400mm, and the length of each non-cutting seam at intervals in the middle is 100 mm;
the width of the cutting seam is 6-20 mm, and the width of the cutting seam is 0.15-0.3 times of the diameter of the hose;
the angle of the semicircle of the corrugated energy-gathering cover is 100-120 degrees;
the radius of the semicircle of the corrugated energy-gathering cover is 10-40 mm;
the thickness of the corrugated energy-gathering cover is 0.1-1 mm;
the soft round tube is made of PVC materials, and the corrugated energy-gathering cover is made of copper.
2. A method of using the flexible energy-accumulating blasting cutting pipe device according to claim 1, wherein the method of using the flexible energy-accumulating blasting cutting pipe device for building demolition blasting and the method of using the flexible energy-accumulating blasting cutting pipe device for deep hole blasting respectively comprise the following steps:
the use method for the building demolition blasting comprises the following steps:
(1) determining a cutting position according to the blasting construction scheme and marking;
(2) winding the flexible energy-gathered blasting cutting pipe device with the one-way joint cutting at a marking position and fixing the device, and simultaneously ensuring that the joint cutting direction is vertical to the object to be cut;
(3) connecting a detonating cord with a detonating device and detonating, and cutting and breaking the blasted object under the action of energy-gathered jet after blasting;
the use method for deep hole blasting comprises the following steps:
(1) punching: according to the requirements of the blasting construction scheme, a drilling machine is used for drilling blast holes in the rock mass to be blasted;
(2) charging: loading the selected flexible energy-gathered blasting cutting pipe device with the bidirectional joint cutting into a blast hole by using self weight and fixing;
(3) and (3) blocking: using a plugging material to plug blast holes;
(4) blasting: connecting detonating fuse with igniter and detonating, and after blasting, under the action of energy-gathered jet flow, the rock profile
Forming an initial crack on the wire, and then expanding the initial crack along a contour line under the action of explosive gas to finally form a smooth fracture surface; meanwhile, the wall protection effect of the slit hose is achieved, the half-hole mark rate of the blast hole is high, and the surrounding rock protection effect of the blast hole wall is excellent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810545628.8A CN108759596B (en) | 2018-05-25 | 2018-05-25 | Flexible energy-gathered blasting pipe cutting device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810545628.8A CN108759596B (en) | 2018-05-25 | 2018-05-25 | Flexible energy-gathered blasting pipe cutting device and using method thereof |
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| Publication Number | Publication Date |
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| CN108759596A CN108759596A (en) | 2018-11-06 |
| CN108759596B true CN108759596B (en) | 2020-09-04 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109099781A (en) * | 2018-11-08 | 2018-12-28 | 陕西沣采能源材料科技有限公司 | A kind of cumulative waterpower control explosion powder stick |
| CN110763093B (en) * | 2019-11-07 | 2024-09-17 | 中国科学技术大学 | DNA double-helix type jet-explosion integrated medium-length hole blasting device |
| CN110823032B (en) * | 2019-11-21 | 2022-02-01 | 中国葛洲坝集团易普力股份有限公司 | Presplitting blasting multi-density adjusting charging structure and method |
| CN111307002B (en) * | 2020-03-25 | 2022-07-08 | 安徽理工大学 | Closed free surface cut blasting method for improving blasting efficiency |
| CN112325712B (en) * | 2020-10-12 | 2022-08-09 | 中国运载火箭技术研究院 | Testing device for flexible detonating cord |
| CN112393647A (en) * | 2020-11-05 | 2021-02-23 | 中国科学技术大学 | Self-tapping flexible energy-gathering blasting tube |
| CN112393654B (en) * | 2020-11-11 | 2022-05-17 | 中国人民解放军陆军工程大学 | Two-way energy-gathering blasting charge structure of joint-cutting pipe |
| CN112880507B (en) * | 2021-02-09 | 2022-09-09 | 江西荣达爆破新技术开发有限公司 | Perforation explosive charging explosion method suitable for blasting demolition of middle shear wall |
| CN113432500B (en) * | 2021-08-06 | 2022-09-30 | 安徽理工大学 | Blasting method for fracture-containing dangerous rock mass |
| CN114165237B (en) * | 2021-12-02 | 2023-06-27 | 紫金矿业集团股份有限公司 | Wall protection opposite pressure blasting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN85100973A (en) * | 1985-04-01 | 1986-07-23 | 兵器工业部二零四研究所 | The underwater demolition cutter |
| CN102735121A (en) * | 2012-07-05 | 2012-10-17 | 中国科学技术大学 | Annular linear energy-accumulation cutter |
| CN102901414B (en) * | 2012-11-01 | 2014-07-30 | 中南大学 | Device special for in-hole positioning, orientating and propelling of tunnel directional fracture blasting shaped charge |
| CN103499255A (en) * | 2013-09-29 | 2014-01-08 | 武汉大学 | Method for directional energy-gathered blasting of retaining wall with low damage |
| CN203928912U (en) * | 2014-01-16 | 2014-11-05 | 安徽理工大学 | The directional cumulation demolition set that a kind of energy is strengthened |
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