CN107084647A - The blast hole projectile filling method of Building demolition controlled blasting - Google Patents
The blast hole projectile filling method of Building demolition controlled blasting Download PDFInfo
- Publication number
- CN107084647A CN107084647A CN201710384603.XA CN201710384603A CN107084647A CN 107084647 A CN107084647 A CN 107084647A CN 201710384603 A CN201710384603 A CN 201710384603A CN 107084647 A CN107084647 A CN 107084647A
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- CN
- China
- Prior art keywords
- blasthole
- powder stick
- bamboo chip
- blast hole
- powder
- 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
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- 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
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Building Environments (AREA)
Abstract
A kind of blast hole projectile filling method of Building demolition controlled blasting is, drilled in building load-carrying members, corresponding bamboo chip is made according to the specification of design blasthole, bamboo chip length suitable primacord is intercepted during powder charge, primacord and bamboo chip are formed into association with insulating tape, every section of powder stick is splitted on one side along axis, and be wrapped in the association of bamboo chip and primacord, can be by controlling the spacing between powder stick on a piece bamboo chip, powder stick number needed for addition, form powder stick string, a hair detonator is fixed in powder stick string one end, the other end of its sockets for collecting energy direction towards powder stick string, then by the powder stick made it is in tandem enter blasthole in, wherein one end equipped with detonator is placed on aperture.The loading method of the present invention, which is efficiently solved after conventional explosive is difficult to pack into blasthole or explosive loading blasthole, to reach corresponding blasthole position according to design requirement, hole charge is difficult to control to, charging quality such as can not ensure at the technical barrier, improve loading rate, make charge constitution more reasonable.
Description
Technical field
The present invention relates to controlled blasting loading method, particularly a kind of blast hole projectile filling method of Building demolition controlled blasting.
Background technology
During discarded old building dismounting and reconstruction of the old city town, some skyscrapers can not use mechanical removal, control
Explosion processed turns into safety, quick, economic dismounting mode.The principle of building is removed using in right amount using controlled blasting mode
Explosive carries out explosion, and destruction needs the load-carrying members of demolition of buildings, its unstability slump is disintegrated and is crushed, but guarantee will not
Surrounding enviroment are caused harm, therefore except design will accurately calculate explosive charge, must be precisely during construction
Control explosive charge is simultaneously uniformly distributed explosive, and energy makes full use of after explosion, and explosive charge deficiency can not reach preferable explosion effect
Really, explosive charge is excessive and easily to periphery personnel and environmental danger.
The load-carrying members of most of building are made up of shear wall, frame column, beam, and size is typically all smaller, and its material is basic
It is cast-in-situ steel reinforced concrete.Blast working needs borehole charge on these structures, is limited by construction object, drilling depth is general
All within 3m, drilling hole amount is more, and the explosive payload per hole is smaller, therefore powder charge turns into a fine work, is also whole
The key link of individual blasting process, generally requires the bar shaped explosive for packing film and is cut into some sections of small medicine coils, then according to design
Powder stick number needed for dose loads into hole, but because explosive is paste body shape body, packaging film once ruptures, is just inconvenient to handle, very
Easily occur to glue to stick, it is difficult to load in blasthole, it more difficult to the accurate position for being attached to design, so not only influence charging quality,
Influence powder charge speed.During extensive and large-scale Building demolition explosion, drilling hole amount is typically all hundreds and thousands of, and
Typically it must not exceed 3 days from powder charge to detonation whole process.
The content of the invention
It is an object of the invention to provide a kind of blast hole projectile filling method of Building demolition controlled blasting, to solve building control
Explosive payload is difficult to control in demolition blasting powder charge process, the low technical problem of charging quality, loading rate is difficult to ensure that, makes control
Explosion is more accurate, safe and reliable.
The blast hole projectile filling method of the Building demolition controlled blasting of the present invention, comprises the following steps：
Blasthole is arranged according to design and drill in the load-carrying members such as the shear wall or frame column or beam of building；According to design
Blasthole specification make corresponding length bamboo chip（Length is less than blast hole depth）, a hole is often drilled, a bamboo chip is put into；Treat institute
Have after blasthole is drilled, start powder charge, the primacord of corresponding length is first intercepted according to the length of bamboo chip in blasthole, will with insulating tape
Primacord is fixed on bamboo chip, forms an association, then as needed by the bar shaped column emulsion of packaged by plastic film
Some sections of powder sticks are divided into, every section of powder stick is splitted on one side along axis, powder stick is fixed on along the one side splitted in the way of wrapping up
In the association of bamboo chip and primacord, powder stick is wrapped up again with plastic foil and with insulating tape winding by the powder stick of plastic film wrapped
Reinforced；, can be by controlling the spacing between powder stick, the medicine needed for addition on a bamboo chip according to the hole charge of design
Number is rolled up, a powder stick string is formed；A hair detonator is fixed with insulating tape in powder stick string one end, its sockets for collecting energy direction is towards powder stick string
The other end, then by the powder stick made it is in tandem enter blasthole in, wherein one end equipped with detonator is in aperture direction；With stemming pair
Blasthole mouthful is blocked, and detonator wire is stayed in outside blasthole.
Described blasthole diameter is generally 38-42mm, and length is typically within 3m.
Whether described bamboo chip length need to make according to blast hole depth, can qualified for the depth of inspection blasthole, and
There are certain hardness, diameter of section 7-10mm, it is ensured that will not be bent during powder charge.
Described primacord is that, for propagation of explosion, diameter of section is 6mm or so, more soft.
Described powder stick is film packaging bar shaped column emulsion, and its character is sticky body of paste, and its specification is generally
Diameter 30-33mm, long 300-340mm, quality is 300g.
The blast hole projectile filling method of the Building demolition controlled blasting of the present invention, efficiently solves conventional explosive and is difficult to pack into blasthole
Or corresponding blasthole position can not be reached according to design requirement after explosive loading blasthole, blast hole projectile filling be difficult to control to dose, powder charge
Quality such as can not ensure at the technical barrier, improve loading rate, make charge constitution more reasonable, safe and reliable.
Brief description of the drawings
Primacord and explosive cartridge are fabricated to the schematic diagram of powder stick string for the utilization bamboo chip of the present invention by Fig. 1；
Fig. 2 be powder stick of the present invention it is in tandem enter blasthole in sectional view；
Fig. 3 is bore position schematic diagram of the invention；
In accompanying drawing：1- bamboo chips, 2- primacords, 3- powder sticks, 4- detonators, 5- detonator wires, 6- plastic foils, 7- insulating tapes, 8- is held
Weight structure, 9- blastholes, 10- stemmings.
Embodiment
A kind of blast hole projectile filling method of Building demolition controlled blasting, it is characterised in that：It comprises the following steps：
（a）, according to required blasting design scheme, on the shear wall or frame column or joist support weight structure 8 of building bore blasthole 9, directly
Footpath is 38-42mm, length within 3m, blasthole spacing m=（1.2~2.0）W, W are minimum burden, when structure is beam or post
When, W takes the half of beam or post section short side, and when structure is wall, W takes the half of wall thickness, and blasthole array pitch n=（0.8~
1.2）m；
（b）, according to the depth of blasthole 9 make length be less than blast hole depth bamboo chip 1, the diameter of section 7-10mm of bamboo chip 1；
（c）, according to the length of bamboo chip 1 intercept corresponding length primacord 2, primacord 2 is fixed on bamboo chip 1 with insulating tape 7
On, an association is formed, the bar shaped column emulsion of packaged by plastic film is then divided into some sections of powder sticks 3, the property of powder stick 3
Shape is sticky body of paste, and diameter 30-33mm, long 300-340mm, every section of powder stick 3 are splitted on one side along axis, by powder stick 3 along cuing open
The one side opened uniformly is wrapped in the association of bamboo chip 1 and primacord 2, wrap up powder stick 3 again with plastic foil 6 and with insulating
Adhesive plaster 7 is wound to be reinforced by the powder stick 3 of plastic film wrapped, forms powder stick string；
（d）, powder stick string one end insulating tape 7 fix a hair detonator 4, its sockets for collecting energy direction towards powder stick string the other end, so
Afterwards by the powder stick made it is in tandem enter blasthole 9 in, wherein one end equipped with detonator 4 is in the aperture direction of blasthole 9；
（e）, with stemming 10 aperture of blasthole 9 is blocked, detonator wire 5 is stayed in outside blasthole 9.
Claims (4)
1. a kind of blast hole projectile filling method of Building demolition controlled blasting, it is characterised in that：It comprises the following steps：
（a）, in the shear wall or frame column or joist support weight structure of building（8）Upper brill blasthole（9）, blasthole spacing m=（1.2~2.0）
W, W are minimum burden, and when structure is beam or post, W takes the half of beam or post section short side, and when structure is wall, W takes wall
The half of wall thickness, blasthole array pitch n=（0.8~1.2）m；
（b）, according to blasthole（9）Depth make length be less than blast hole depth bamboo chip（1）；
（c）, according to bamboo chip（1）Length intercept corresponding length primacord（2）, use insulating tape（7）By primacord（2）It is fixed
In bamboo chip（1）On, an association is formed, the bar shaped column emulsion of packaged by plastic film is then divided into some sections of powder sticks
（3）, every section of powder stick（3）Splitted along axis on one side, by powder stick（3）Bamboo chip is uniformly wrapped on along the one side splitted（1）With leading
Quick-fried rope（2）Association on, use plastic foil（6）Powder stick is wrapped up again（3）And use insulating tape（7）Winding is by plastic film wrapped
Powder stick（3）Reinforced, form powder stick string；
（d）, powder stick string one end insulating tape（7）Fix a hair detonator（4）, its sockets for collecting energy direction is towards the another of powder stick string
End, then by the powder stick made it is in tandem enter blasthole（9）In, wherein equipped with detonator（4）One end in blasthole（9）Aperture direction；
（e）, use stemming（10）To blasthole（9）Aperture is blocked, and makes detonator wire（5）Stay in blasthole（9）Outside.
2. the blast hole projectile filling method of Building demolition controlled blasting according to claim 1, it is characterised in that：The blasthole
（9）A diameter of 38-42mm, length is within 3m.
3. the blast hole projectile filling method of Building demolition controlled blasting according to claim 1, it is characterised in that：The bamboo chip
（1）Diameter of section is 7-10mm.
4. the blast hole projectile filling method of Building demolition controlled blasting according to claim 1, it is characterised in that：Described powder stick
（3）Character is sticky body of paste emulsion, diameter 30-33mm, long 300-340mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710384603.XA CN107084647B (en) | 2017-05-26 | 2017-05-26 | The blast hole projectile filling method of Building demolition controlled blasting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710384603.XA CN107084647B (en) | 2017-05-26 | 2017-05-26 | The blast hole projectile filling method of Building demolition controlled blasting |
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| CN107084647A true CN107084647A (en) | 2017-08-22 |
| CN107084647B CN107084647B (en) | 2018-07-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269367A (en) * | 2018-10-19 | 2019-01-25 | 洛阳理工学院 | It is a kind of to exempt from punching construction method for reinforced concrete frame structure demolition blasting |
| CN109737844A (en) * | 2019-03-20 | 2019-05-10 | 福建省新华都工程有限责任公司 | A kind of mine blasthole explosive spacing installing mechanism |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002005600A (en) * | 2000-05-18 | 2002-01-09 | Yosho Cho | Relaxed blasting method and structure of blasting mat |
| CN101900519A (en) * | 2009-05-25 | 2010-12-01 | 同济大学 | Bamboo-chip smooth wall protection blasting method for joint fissure mud rock slope |
| CN201764912U (en) * | 2010-08-30 | 2011-03-16 | 中铁十九局集团第五工程有限公司 | Vibration-isolating charging blasthole |
| CN202032958U (en) * | 2011-03-23 | 2011-11-09 | 鞍钢集团矿业公司 | Decoupling charge centering device for oblique blasthole |
| CN204009912U (en) * | 2014-07-31 | 2014-12-10 | 山东华联矿业股份有限公司 | Pre-control is pushed up the ore deposit afterwards filling mining sectional type blasting cartridge that paragraphs |
| CN105300203A (en) * | 2015-10-22 | 2016-02-03 | 武汉大学 | Outline blasting method used for rock foundation excavation |
| CN106638693A (en) * | 2016-12-24 | 2017-05-10 | 广东宏大广航工程有限公司 | Dismantling construction method of immersed tunnel steel-pipe pile concrete wall by drilling and blasting |
-
2017
- 2017-05-26 CN CN201710384603.XA patent/CN107084647B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002005600A (en) * | 2000-05-18 | 2002-01-09 | Yosho Cho | Relaxed blasting method and structure of blasting mat |
| CN101900519A (en) * | 2009-05-25 | 2010-12-01 | 同济大学 | Bamboo-chip smooth wall protection blasting method for joint fissure mud rock slope |
| CN201764912U (en) * | 2010-08-30 | 2011-03-16 | 中铁十九局集团第五工程有限公司 | Vibration-isolating charging blasthole |
| CN202032958U (en) * | 2011-03-23 | 2011-11-09 | 鞍钢集团矿业公司 | Decoupling charge centering device for oblique blasthole |
| CN204009912U (en) * | 2014-07-31 | 2014-12-10 | 山东华联矿业股份有限公司 | Pre-control is pushed up the ore deposit afterwards filling mining sectional type blasting cartridge that paragraphs |
| CN105300203A (en) * | 2015-10-22 | 2016-02-03 | 武汉大学 | Outline blasting method used for rock foundation excavation |
| CN106638693A (en) * | 2016-12-24 | 2017-05-10 | 广东宏大广航工程有限公司 | Dismantling construction method of immersed tunnel steel-pipe pile concrete wall by drilling and blasting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269367A (en) * | 2018-10-19 | 2019-01-25 | 洛阳理工学院 | It is a kind of to exempt from punching construction method for reinforced concrete frame structure demolition blasting |
| CN109269367B (en) * | 2018-10-19 | 2020-06-05 | 洛阳理工学院 | Punching-free construction method for blasting demolition of reinforced concrete frame structure |
| CN109737844A (en) * | 2019-03-20 | 2019-05-10 | 福建省新华都工程有限责任公司 | A kind of mine blasthole explosive spacing installing mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107084647B (en) | 2018-07-24 |
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