CN108731566A - A kind of method of preformed particles medium module demolition blasting steel angle structure - Google Patents
A kind of method of preformed particles medium module demolition blasting steel angle structure Download PDFInfo
- Publication number
- CN108731566A CN108731566A CN201810505055.6A CN201810505055A CN108731566A CN 108731566 A CN108731566 A CN 108731566A CN 201810505055 A CN201810505055 A CN 201810505055A CN 108731566 A CN108731566 A CN 108731566A
- Authority
- CN
- China
- Prior art keywords
- steel
- angle steel
- pvc pipe
- medium
- preformed particles
- Prior art date
- 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.)
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
-
- 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
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a kind of methods of demolition blasting steel angle structure preformed particles medium.Step includes：（1）Make one piece of attached angle steel identical with dismounting angle steel to be blasted；（2）It is rectangular hollow tubular girder steel that this attached angle steel long side and dismounting angle steel to be blasted, which are welded to form as a section,；（3）Hollow tubular steel beam bottom is welded using steel plate；（4）Angle steel back transverse cuts precracking to be removed；（5）Make plastic rectangular cylindrical mould；（6）Plastic rectangular cylindrical mould is poured into granule medium, a pre-buried pvc pipe is embedded into mold centre；（7）It is packed into pack along pre-buried pvc pipe upper end opening, is blocked to pvc pipe nozzle using stemming, obtains preformed particles medium powder charge module.（8）Preformed particles medium powder charge module is encased in hollow tubular girder steel, is detonated.Explosive utilization rate of the present invention is high, choosing multiple charging means and interval mode, and explosion generates slungshot and shock wave harm is small, is easy protection.
Description
Technical field
The invention belongs to engineering explosion technical fields, and in particular to a kind of preformed particles medium module demolition blasting angle steel knot
The method of structure.
Background technology
It, can not since its structure sheet is as hollow even template material when demolition blasting steel dielectric member or construction of structures
Charge explosion is punched, be only capable of using Concentrated charge, outer charging and is welded into the technique for building concrete explosion in cylinder.
And process above has apparent technological deficiency.
1, Concentrated charge explosion need to use high brisance detonating explosive, and such explosive is mostly tubing products, civilian to be difficult to realize；
The Concentrated charge of high brisance detonating explosive processing is only capable of jet action in plank Cut blasting simultaneously, that is, is only capable of cutting on the steel plate
Seam and can not generate big opening make overall structure destroy unstability.
2, outer charging explosion is close to object explosive acting ability concentration of local to be removed in contact position, and it is fried not to be close to dismounting object
Medicine energy, which is not applied directly to largely, to be removed on object, is largely flogged a dead horse, and generate explosion wave, blasting flyrock and
Noise is all not easy prevention and control, can not implement under the inhabitation of environment complexity and production environment.
3, tubular Inner builds concrete explosion and is only applicable to the larger cylindrical steel structure of cross-sectional area, and construction site pours coagulation
Soil and curing time are long, and drilling operation destroys casting concrete structure, and inside concrete damage is unknowable, influences explosive payload and sentences
It is welded under disconnected and complex environment and to pour operation difficulty big.
Invention content
The present invention is to overcome prior art defect, proposes a kind of side of demolition blasting steel angle structure preformed particles medium module
Method.
Technical solution of the invention is：A kind of method of demolition blasting steel angle structure preformed particles medium module, step
Suddenly include：
（1）Make one piece of attached angle steel identical with dismounting angle steel to be blasted；
（2）It is rectangular hollow tubular steel that this attached angle steel long side and dismounting angle steel to be blasted, which are welded to form as a section,
Beam；
（3）Using the steel plate with angle steel same material by hollow tubular steel beam bottom seamless welding；
（4）Angle steel back transverse cuts precracking to be removed；
（5）With two number of edges of demolition blasting angle steel plastic rectangular cylindrical mould, this mold bottom envelope are made with wide according to be long
Mouthful, upper end opening；
（6）Plastic rectangular cylindrical mould is holded up, granule medium is poured into along upper end opening, after being poured into certain altitude, is waited for
It is embedded into the pre-buried pvc pipe that a root long degree is slightly higher than upper end opening in mold centre after the completion of granule medium natural subsidence, pre-
It buries and continues to pour into granule medium between pvc pipe outer wall and mould inner wall, until slightly below mould after the completion of granule medium natural subsidence
Have upper end opening height, mold is kept to be in vertical state always with pre-buried pvc pipe；
（7）It is packed into pack along pre-buried pvc pipe upper end opening according to design dose, stemming is reused and blocks to pvc pipe nozzle, obtain
To preformed particles medium powder charge module；
（8）Preformed particles medium powder charge module is encased in hollow tubular girder steel, preparation is completed before warning, protection explosion
After detonate.
According to embodiments of the present invention, the granule medium is sand medium.
The present invention realizes Prefabricated block assembled demolition blasting steel construction by four key technology points：
1, angle steel to be removed is welded into girder steel；
2, charging mould is made, reserved charging hole when granule medium is poured in mold；
3, charging hole is reserved in Prefabricated block, and selection dose, charging means, interval mode and interval can be adjusted according to actual conditions
Species type；
4, pre-buried pvc pipe central axes must be overlapped with hollow girder steel central axes；Ensure pvc pipe in hollow girder steel centre.
Using above-mentioned technical proposal, the advantages of present invention compares existing method, has：1, it using 2# rock emulsion explosives, relatively manages
Explosive processed is easier to obtain；2, explosive utilization rate is high, saves explosive cost, and smaller dose reaches target；3, it may be selected
A variety of charging means and interval mode more make full use of explosive acting ability；4, explosive is packed into inside angle steel, and explosion generates slungshot
Small, easy protection is endangered with shock wave.
Description of the drawings
Fig. 1 is hollow tubular girder steel schematic diagram.
Fig. 2 is plastic rectangular cylindrical mould schematic diagram.
Fig. 3 is that schematic diagram is completed in the assembly of preformed particles medium powder charge module.
In figure：The attached angle steel of 1-；2- dismounting angle steel to be blasted；3- steel plate washers；4- sand media；The pre-buried pvc pipes of 5-；6- pre-cut
Seam；7- explosion packs；8- cuboid cylindrical moulds.
Specific implementation mode
The present invention is described further with specific implementation method below in conjunction with the accompanying drawings, not to the limit of its protection domain
System.
Embodiment 1, a kind of preformed particles medium module assembled method of demolition blasting steel angle structure, make one with wait for
The identical attached angle steel 1 of 2 size of demolition blasting angle steel, long 150cm；1 long side of attached angle steel is corresponded to dismounting angle steel 2 to be blasted to grow
Side, short side use electric welding at hollow tubular girder steel after corresponding to short side alignment, reuse steel plate washer 3 and seal hollow steel beam bottom
Bottom；It is cut into from hollow steel beam length 50cm to the outside of dismounting angle steel to be blasted 2 between 100cm every 5cm horizontal and vertical
Pre- joint-cutting 6, long 40mm, wide 5mm；PVC material cross sectional dimensions customized is 78*78cm, thickness 3mm, the plastics of long 150cm are rectangular
Body cylindrical mould 8；Sand medium 4 is poured into along 8 upper end opening of plastic rectangular cylindrical mould, grain size 0.25-0.35mm waits filling
Enter sand medium 4 settle after highly be 50cm after, from 8 plastic rectangular cylindrical mould openings be inserted into a root long 105cm, diameter
The pre-buried pvc pipe 5 of 40cm keeps pvc pipe to be located at hollow girder steel center, and pre-buried pvc pipe 5, which is inserted into, have been poured in sand medium 4
Depth is 5cm；It continues on and pours sand medium 4 between 5 outer wall of 8 inner wall of plastic rectangular cylindrical mould and pre-buried pvc pipe, until
Height is flushed with hollow girder steel open height after sand medium 4 settles.It is arrived along 5 nozzle of pre-buried pvc pipe loading explosion pack 7 pre-buried
Pvc pipe 5, wherein 2# rock emulsion explosives 150g, charge positions are from the 50cm of bottom, point 3 sections of powder charges, every section of 50g, every section of air
It is spaced 15cm；3 hair ms-3 Nonel detonators.It is after carrying out the preceding preparation of the detonation such as stemming blocking, protection, evacuation and warning
It can detonate.
1 size of attached angle steel is 80mm*80mm*8mm, long 150cm；3 size of back cover steel plate washer is 10cm*10cm*1cm；
Cuboid cylindrical mould material is polypropylene, cross sectional dimensions 78*78cm, thickness 3mm, long 150cm；The grain size for pouring sand is
0.25-0.35mm；Pre-buried pvc pipe size is long 105cm, diameter 40cm, wall thickness 3mm；The long 40mm of pre- joint-cutting, width 5mm, along waiting for
Remove angle steel right angle back；Per 15cm underground borehole blasting 50g, it is packed into 1 hair detonator, uses 150g2# rocks to emulsify in total fried
Medicine, 3 hair ms-3 Nonel detonators.Final test effect shearing length 41cm, destroys length 42cm.
Claims (2)
1. a kind of method of demolition blasting steel angle structure preformed particles medium, characterization step include：
（1）Make one piece of attached angle steel identical with dismounting angle steel to be blasted；
（2）It is rectangular hollow tubular steel that this attached angle steel long side and dismounting angle steel to be blasted, which are welded to form as a section,
Beam；
（3）Using the steel plate with angle steel same material by hollow tubular steel beam bottom seamless welding；
（4）Angle steel back transverse cuts precracking to be removed；
（5）With two number of edges of demolition blasting angle steel plastic rectangular cylindrical mould, this mold bottom envelope are made with wide according to be long
Mouthful, upper end opening；
（6）Plastic rectangular cylindrical mould is holded up, granule medium is poured into along upper end opening, after being poured into certain altitude, is waited for
It is embedded into the pre-buried pvc pipe that a root long degree is slightly higher than upper end opening in mold centre after the completion of granule medium natural subsidence, pre-
It buries and continues to pour into granule medium between pvc pipe outer wall and mould inner wall, until slightly below mould after the completion of granule medium natural subsidence
Have upper end opening height, mold is kept to be in vertical state always with pre-buried pvc pipe；
（7）It is packed into pack along pre-buried pvc pipe upper end opening according to design dose, stemming is reused and blocks to pvc pipe nozzle, obtain
To preformed particles medium powder charge module；
（8）Preformed particles medium powder charge module is encased in hollow tubular girder steel, preparation is completed before warning, protection explosion
After detonate.
2. a kind of method of demolition blasting steel angle structure preformed particles medium module according to claim 1, it is characterized in that
The granule medium is sand medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505055.6A CN108731566B (en) | 2018-05-24 | 2018-05-24 | Method for blasting demolishing angle steel structure of prefabricated granular medium module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505055.6A CN108731566B (en) | 2018-05-24 | 2018-05-24 | Method for blasting demolishing angle steel structure of prefabricated granular medium module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108731566A true CN108731566A (en) | 2018-11-02 |
| CN108731566B CN108731566B (en) | 2023-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810505055.6A Active CN108731566B (en) | 2018-05-24 | 2018-05-24 | Method for blasting demolishing angle steel structure of prefabricated granular medium module |
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| CN (1) | CN108731566B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432500A (en) * | 2021-08-06 | 2021-09-24 | 安徽理工大学 | Blasting method for fracture-containing dangerous rock mass |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4339995A (en) * | 1979-02-06 | 1982-07-20 | Messerschmitt-Bolkow-Blohm Gmbh | Method for destroying structures such as concrete walls |
| CN103938888A (en) * | 2014-05-14 | 2014-07-23 | 中钢集团武汉安全环保研究院有限公司 | Blasting demolition method for cylindrical steel column structure buildings |
| US20140318335A1 (en) * | 2013-04-24 | 2014-10-30 | Kacoh Co., Ltd. | Steel-structure demolition method |
| CN105823386A (en) * | 2016-06-03 | 2016-08-03 | 武汉科技大学 | Method for blasting demolition of reinforced concrete supporting beam in foundation pit |
| CN107858941A (en) * | 2017-11-16 | 2018-03-30 | 南京交通工程有限公司 | A kind of hydraulic pressure demolition removes Prestressed Continuous Box Beam bridge construction technique |
-
2018
- 2018-05-24 CN CN201810505055.6A patent/CN108731566B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4339995A (en) * | 1979-02-06 | 1982-07-20 | Messerschmitt-Bolkow-Blohm Gmbh | Method for destroying structures such as concrete walls |
| US20140318335A1 (en) * | 2013-04-24 | 2014-10-30 | Kacoh Co., Ltd. | Steel-structure demolition method |
| CN103938888A (en) * | 2014-05-14 | 2014-07-23 | 中钢集团武汉安全环保研究院有限公司 | Blasting demolition method for cylindrical steel column structure buildings |
| CN105823386A (en) * | 2016-06-03 | 2016-08-03 | 武汉科技大学 | Method for blasting demolition of reinforced concrete supporting beam in foundation pit |
| CN107858941A (en) * | 2017-11-16 | 2018-03-30 | 南京交通工程有限公司 | A kind of hydraulic pressure demolition removes Prestressed Continuous Box Beam bridge construction technique |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432500A (en) * | 2021-08-06 | 2021-09-24 | 安徽理工大学 | Blasting method for fracture-containing dangerous rock mass |
| CN113432500B (en) * | 2021-08-06 | 2022-09-30 | 安徽理工大学 | Blasting method for fracture-containing dangerous rock mass |
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| Publication number | Publication date |
|---|---|
| CN108731566B (en) | 2023-04-28 |
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