CN105571418B - Reinforced beam or post water coupling blasting demolishing method - Google Patents
Reinforced beam or post water coupling blasting demolishing method Download PDFInfo
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- CN105571418B CN105571418B CN201610116721.8A CN201610116721A CN105571418B CN 105571418 B CN105571418 B CN 105571418B CN 201610116721 A CN201610116721 A CN 201610116721A CN 105571418 B CN105571418 B CN 105571418B
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- blasthole
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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
-
- 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
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A kind of reinforced beam or post water coupling blasting demolishing method, it arranges blasthole and toward the technique poured water in blasthole using along reinforced beam or mast axis, reaches the resistance for reducing deep hole explosive and accurate powder charge, efficiently utilizes the intensity and quantity of hydraulic pressure demolition energy, effective controlled blasting vibrations, blasting flyrock, air-shock wave and quick-fried raw toxic gas, the purpose of reduction blasting dust.Present invention process is simple, easily operated, has wide range of applications, and is the preferable construction method that reinforced beam and post are removed.
Description
Technical field
The invention belongs to blasting engineering field, particularly on a kind of reinforced beam or post water coupling explosion
The method of dismounting.
Background technology
Dismounting for reinforced beam or post, invention " reinforced beam axially pre-buried blasthole and demolition blasting side
Method " (application number：201510376852.5), " reinforced column axially pre-buried blasthole and demolition blasting method " (application number：
201510383378.9) the BLASTING TECHNOLOGY FOR DEMOLITION scheme of axially pre-buried blasthole is proposed, the technical scheme has been evaded mixes in reinforcing bar
The problem to be drilled in solidifying soil, also largely reduce explosive consumption.But the technical scheme is in blast hole projectile filling, no matter being mixed to reinforcing bar
Solidifying Tu Liang or post, when hole depth is more than 3m, due to the deformation of the drag effect of the gravity of explosive, blasthole hole wall, in addition explosive,
It is difficult to powder charge (particularly it is difficult to accomplishing precise intervals powder charge).This can influence demolition effect and safety.One of solution is just
It is powder charge resistance to be reduced.Can preferably solve this problem using water coupling.Meanwhile using water coupling, it can subtract
Endangered caused by few explosion.This is significant for urban demolition blasting.
The content of the invention
It is an object of the invention to provide a kind of method of reinforced beam or post water coupling demolition blasting, specifically
Say it is that the Blasting Demolition Technology scheme of water coupling is being used along in the axial arranged blasthole of beam or post.
The object of the present invention is achieved like this：
A kind of method of reinforced beam water coupling demolition blasting, comprises the following steps：
1) both ends open blasthole is arranged in reinforced beam；
2) blasthole opening is found, and is cleaned out with pressure wind；
3) traction rope yarn is used as through an iron wire or rope in blasthole, makes its both ends outside hole；
4) toward filling water in blasthole, and water level is kept before powder charge terminates；
5) in the hole outer portion silk thread of traction rope yarn one end or adhesive tape colligation, continuously or discontinuously Explosive roll, dragging are led
The messenger line other end, explosive is dragged in blasthole, and the detonator or detonator wire for making to draw from primer [cartridge] are extended to outside hole；
6) detonate.
In the method for described reinforced beam water coupling demolition blasting, both ends open blasthole is parallel in step 1)
In reinforced beam axis, its both ends to surface to or oblique direction bend up, the termination for being opened on reinforced beam is horizontal
On section or on the side of reinforced beam.
In the method for described reinforced beam water coupling demolition blasting, another way of step 5)：Leading
The hole outer portion silk thread or the discontinuous Explosive roll of adhesive tape colligation and primacord of messenger line one end, the rope yarn other end is dragged, will
Explosive is dragged in blasthole, and primacord is extended to outside hole.
In the method for described reinforced beam water coupling demolition blasting, in step 1) both ends open blasthole along
Reinforced beam axis step-by-step arrangement.Per section length 3-8m.
A kind of method of reinforced column water coupling demolition blasting, comprises the following steps：
1) upper end open blasthole is arranged in reinforced column；
2) blasthole opening is found, and is cleaned out with pressure wind；
3) toward filling water in blasthole, and water level is kept before powder charge terminates；
4) in one end silk thread or adhesive tape the colligation continuously or discontinuously Explosive roll of iron wire or rope, then explosive is put
Enter in blasthole, in blasthole aperture, the root long degree of traverse one is more than the stub of blasthole diameter, by iron wire or rope yarn colligation on stub；Make
Explosive is suspended in hole, and the detonator or detonator wire drawn from primer [cartridge] are extended to outside hole；
5) detonate.
In the method for described reinforced column water coupling demolition blasting, upper end open blasthole is parallel in step 1)
In armored concrete mast axis, its upper end open is on the upper end cross section of reinforced column, or upper-end bent, is opened on steel
On the side of reinforced concrete post.
In the method for described reinforced column water coupling demolition blasting, another way of step 4)：In iron
Explosive, is then put into blasthole by one end silk thread or the discontinuous Explosive roll of adhesive tape colligation and primacord of silk or rope,
The root long degree of blasthole aperture traverse one is more than the stub of blasthole diameter, by iron wire or rope yarn colligation on stub, is suspended to explosive
In hole；And primacord is extended to outside hole.
In the method for described reinforced column water coupling demolition blasting, in step 1) upper end open blasthole along
Reinforced column axial segmentation is arranged.Per height of lift 4-10m.
In above-mentioned reinforced beam or the method for post water coupling demolition blasting, the water injected into blasthole is certainly
Water.
In above-mentioned reinforced beam or the method for post water coupling demolition blasting, blasthole is blocked with sandstone before detonation
End.
Advantages of the present invention：
1) present invention make use of the buoyancy of water and the lubrication of water well, reduces powder charge resistance, can realize more suitable
Profit, more accurately powder charge.
2) present invention utilizes the principle of hydraulic pressure demolition, can more efficiently utilize blasting energy, crushing effect evenly, block
Degree is smaller；Plus the mode for taking step-by-step arrangement blasthole, reduce dynamite quantity per hole, concussion of blasting, quick-fried can be efficiently controlled
Broken slungshot, the intensity of air-shock wave and quick-fried raw toxic gas and quantity, reduce blasting dust.
3) when blasthole of the invention uses pre-buried pipeline, accomplished just to consider tearing open for armored concrete rod member at the beginning of design
Remove, adverse effect is significantly reduced in demolition blasting.Particularly consider using these pre-buried pipelines as the logical of building
When news, plumbing, power supply, steam line, building life cycle cost can be greatly reduced, improves building life-cycle benefit.Can
With prediction, this will influence and change the design specification of existing reinforced beam, post.
4) present invention process is simple, easily operated, has wide range of applications.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1, it is one embodiment provided by the invention (this example is reinforced beam) steel for shot diagrammatic cross-section.
Fig. 2, it is the section of another embodiment (this example is reinforced beam) step-by-step arrangement blasthole provided by the invention
Schematic diagram.
Fig. 3, it is one embodiment provided by the invention (this example is reinforced column) steel for shot diagrammatic cross-section.
Fig. 4, it is the section of another embodiment (this example is reinforced column) step-by-step arrangement blasthole provided by the invention
Schematic diagram.
Fig. 5, it is the diagrammatic cross-section of one embodiment provided by the invention (this example is reinforced beam) charge constitution.
Fig. 6, it is the diagrammatic cross-section of one embodiment provided by the invention (this example is reinforced column) charge constitution.
In figure, 1- reinforced beams；2- straight holes；The curved holes of 3-；4- reinforced columns；5- draws rope yarn；6- explosives；7-
Water；8- primacords, detonator or detonator wire；9- blocks sandstone；10- stubs；11- suspends silk thread in midair；12- colligation silk threads.
Embodiment
Shown in Fig. 1 is one embodiment provided by the invention (this example be reinforced beam, abbreviation beam) steel for shot
Diagrammatic cross-section.The both ends of straight hole 2 in this example parallel to the axis of reinforced beam 1 arrangement are bent up upwards forms curved hole 3, curved hole
3 are opened in the end cross-sectional of beam upper surface and beam respectively.
Curved hole 3 can also be bent up obliquely upward, be opened on the side of reinforced beam.
Shown in Fig. 2 is another embodiment (this example is reinforced beam) step-by-step arrangement blasthole provided by the invention
Diagrammatic cross-section.Step-by-step arrangement blasthole in this example, parallel to the end of straight hole 2 of the axis of reinforced beam 1 arrangement in being often segmented
Bend up, form curved hole 3, the curved hole 3 of this example is bent up to surface, is opened on the upper surface of beam.In middle adjacent bend pipe one (or
Two) slightly to beam both sides deflection, avoid point of intersection from colliding.
Curved hole 3 can also be opened on the end cross-sectional of reinforced beam or the side of beam.
The bending up a little apart from beam-ends cross section 0.3-1.0m on straight hole 2 of curved hole 3 near beam both ends.
It is 3-8m per section length.
Spacing (bending up a distance equal to adjacent straight tube) is 0.4-0.8m between adjacent two sections of straight tubes 2.
Shown in Fig. 3 is one embodiment provided by the invention (this example be reinforced column, abbreviation post) arrangement blasthole
Diagrammatic cross-section, this straight hole 2 is opened on top surface on post parallel to mast axis.
The upper end of straight hole 2 can also be bent, and be opened on the side of post.
Shown in Fig. 4 is another embodiment (this example is reinforced column) axial segmentation arrangement big gun provided by the invention
The diagrammatic cross-section in hole.This all straight hole 2 is opened on post side parallel to mast axis, curved hole 3.
Spacing is 0.5-1.0m between adjacent two sections of straight holes 2 in post.
Per height of lift 4-10m.
Shown in Fig. 5 is one embodiment provided by the invention (this example be reinforced beam, abbreviation beam) charge constitution
Diagrammatic cross-section.In figure, a straight hole 2 is arranged along beam axis, the both ends of straight hole 2 bend up to form two sections of curved holes 3 upwards, draw
Explosive 6 is banded with adhesive tape or silk thread on rope yarn 5, primacord, detonator or detonator wire 8 are extended to outside hole, be filled with hole
Water 7.
Shown in Fig. 6 is that the section of one embodiment provided by the invention (this example is reinforced column) charge constitution shows
It is intended to.In figure, a straight hole 2 is arranged on the axis of reinforced column 4, straight hole 2 is opened on post upper end face.Suspention
Silk thread 11 lower end colligation silk thread colligation explosive 6 (can be continuously or discontinuously) and primacord, detonator or detonator wire 8；On
End is suspended on stub 10；Primacord, detonator or the extension of detonator wire 8 are full of water 7, blasthole upper end has outside portalling in blasthole
Block sandstone 9.
Described water uses running water.
Described explosive can be continuously or discontinuously pack, powder column, powder stick.
In the method for above-mentioned reinforced beam or post water coupling demolition blasting, blasthole can be in reinforced beam
Pre-buried plastic tube is formed during construction., can also be when removing with drill hole of drilling machine shape when blasthole end is without bending (when being straight hole)
Into.
Embodiment 1
Certain reinforced beam (abbreviation beam) needs demolition blasting.Its size is long 7.2m, wide × a height of 1.2m in section ×
1.5m。
The beam demolition blasting step is：
1) PVC plastic pipe with an isometric diameter 38mm of beam is used as blasthole, plastic tube two along the pre-buried arrangement of beam axis
Hold to surface and bend up, be opened on beam upper surface, bending radius 0.5m, 45 ° of transfer angle.
2) blasthole opening is found, and is cleaned out with pressure wind；
3) rope yarn is drawn through an iron wire in blasthole, makes its both ends outside hole；
4) toward filling water in blasthole, and water level is kept before powder charge terminates；
5) emulsification of the hole outer portion one end adhesive tape every 20cm colligations a diameter of 32mm, length 20cm of rope yarn is being drawn
Explosive roll, altogether 15 powder sticks of colligation, while the root long degree of colligation one is 7.0m primacord；Used in the traction rope yarn other end
Power, powder stick and primacord are dragged in pre-buried blasthole, are located at straight-tube portion；Primacord is extended to outside hole；
6) detonate.
Embodiment 2
Certain reinforced beam (abbreviation beam) needs demolition blasting.Its size is long 12m, wide × a height of 0.7m in section ×
1.0m。
The beam demolition blasting step is：
1) two root long degree be 6m, diameter 38mm PVC plastic pipe along beam axis it is end to end segmentation it is pre-buried arrangement be used as big gun
Hole, plastic tube both ends are bent up obliquely upward, are opened on beam both side surface, bending radius 0.5m, transfer angle respectively successively
60°。
2) all blasthole openings are found, and are cleaned out with pressure wind；
3) rope yarn is drawn through an iron wire in two blastholes, makes its both ends outside hole；
4) toward filling water in blasthole, and water level is kept before powder charge terminates；
5) hole outer portion one end a diameter of 32mm of adhesive tape colligation in traction rope yarn, length 20cm emulsion medicine
Volume；Per blasthole 20 powder sticks of continuous colligation；Exerted oneself in the traction rope yarn other end, then powder stick is dragged in pre-buried blasthole, makes it
Positioned at straight-tube portion；The detonator drawn from primer [cartridge] is extended to outside hole；Respectively 0.5m is blocked per blasthole both ends with sandstone.
6) detonate.
Embodiment 3
Certain reinforced column (abbreviation post) needs demolition blasting.Its size is high 6.5m, section length × a width of 0.6m ×
0.6m。
The post demolition blasting step is：
1) length drilled out along post axis by the use of rig be 6.4m, a diameter of 36mm hole be opened on post as blasthole, blasthole
Push up cross section.
2) blasthole opening is found, and is cleaned out with pressure wind；
3) toward filling water in blasthole, and water level is kept before powder charge terminates；
4) in piece primacord of rope made of hemp one end silk thread colligation and a diameter of 32mm, length 20cm breast that length is 7m
Change Explosive roll；Powder stick, spacing 30cm, is then put into blasthole by the discontinuous colligation of powder stick, the traverse one in blasthole aperture
Length is 60mm, a diameter of 50mm stub, by iron wire or rope yarn colligation on stub, explosive is suspended in hole；And it will lead
Quick-fried rope is extended to outside hole.
5) detonate.
Embodiment 4
Certain reinforced column (abbreviation post) needs demolition blasting.Its size is high 20m, sectional dimension length × a width of 1.2m
×1.2m。
The post demolition blasting step is：
1) it is divided to two sections of arrangement blastholes, every section of 10m height；2 works of PVC plastic pipe that every section of arrangement overall length is 10m diameters 36mm
For blasthole, pre-buried arrangement all parallel with post axis, two pipes are on a symmetry axis of post cross section and each into section
The distance of the heart is 0.2m, plastic tube upper-end bent, bending radius 0.5m, 60 ° of angle of bend, the side being opened near capital
On.
2) all blasthole openings are found, and are cleaned out with pressure wind；
3) toward filling water in blasthole, and water level is kept before powder charge terminates；
4) with piece primacord of silk thread colligation and a diameter of 32mm, length 20cm on rope made of hemp one end that length is 11m
Emulsion explosive cartridge；Powder stick, spacing 20cm, is then put into blasthole by the discontinuous colligation of powder stick, in blasthole aperture traverse
One root long degree is 60mm, a diameter of 60mm stub, by iron wire or rope yarn colligation on stub, explosive is suspended in hole；And
Primacord is extended to outside hole；Then respectively 0.5m is blocked per blasthole upper end with sandstone；
5) detonate.
Claims (10)
- A kind of 1. method of reinforced beam water coupling demolition blasting, it is characterised in that comprise the following steps：1) both ends open blasthole is arranged in reinforced beam；Blasthole both ends to surface to or oblique direction bend up, be open In on the termination cross section of reinforced beam or on the side of reinforced beam；2) blasthole opening is found, and is cleaned out with pressure wind；3) traction rope yarn is used as through an iron wire or rope in blasthole, makes its both ends outside hole；4) toward filling water in blasthole, and water level is kept before powder charge terminates；5) the hole outer portion silk thread of rope yarn one end or adhesive tape colligation continuously or discontinuously Explosive roll are being drawn, is dragging pull rope The line other end, explosive is dragged in blasthole, and the detonator or detonator wire for making to draw from primer [cartridge] are extended to outside hole；6) detonate.
- 2. the method for reinforced beam water coupling demolition blasting according to claim 1, it is characterised in that：Step 5) another way：Drawing the hole outer portion silk thread of rope yarn one end or the discontinuous Explosive roll of adhesive tape colligation and leading quick-fried Rope, the dragging traction rope yarn other end, explosive is dragged in blasthole, and primacord is extended to outside hole.
- 3. the method for reinforced beam water coupling demolition blasting according to claim 1 or 2, it is characterised in that： Both ends open blasthole is along reinforced beam axis step-by-step arrangement in step 1).
- A kind of 4. method of reinforced column water coupling demolition blasting, it is characterised in that comprise the following steps：1) arrangement upper end open blasthole, blasthole upper-end bent in reinforced column, it is opened on the side of reinforced column On；2) blasthole opening is found, and is cleaned out with pressure wind；3) toward filling water in blasthole, and water level is kept before powder charge terminates；4) in one end silk thread or adhesive tape the colligation continuously or discontinuously Explosive roll of iron wire or rope, explosive is then put into big gun In hole, in blasthole aperture, the root long degree of traverse one is more than the stub of blasthole diameter, by iron wire or rope yarn colligation on stub, makes explosive It is suspended in hole；And the detonator or detonator wire drawn from primer [cartridge] are extended to outside hole；5) detonate.
- 5. the method for reinforced column water coupling demolition blasting according to claim 4, it is characterised in that：Step 4) another way：In iron wire or one end silk thread or the discontinuous Explosive roll of adhesive tape colligation and primacord of rope, then Explosive is put into blasthole, in blasthole aperture, the root long degree of traverse one is more than the stub of blasthole diameter, and iron wire or rope yarn colligation are existed On stub, explosive is set to be suspended in hole；And primacord is extended to outside hole.
- 6. the method for the reinforced column water coupling demolition blasting according to claim 4 or 5, it is characterised in that： Upper end open blasthole is arranged along reinforced column axial segmentation in step 1).
- 7. the method for reinforced beam water coupling demolition blasting according to claim 1, it is characterised in that：Toward big gun The water injected in hole is running water.
- 8. the method for reinforced column water coupling demolition blasting according to claim 4, it is characterised in that：Toward big gun The water injected in hole is running water.
- 9. the method for reinforced beam water coupling demolition blasting according to claim 1, it is characterised in that：Detonation It is preceding to block blasthole end with sandstone.
- 10. the method for reinforced column water coupling demolition blasting according to claim 4, it is characterised in that：Rise Before quick-fried blasthole end is blocked with sandstone.
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| CN201610116721.8A CN105571418B (en) | 2016-02-23 | 2016-02-23 | Reinforced beam or post water coupling blasting demolishing method |
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| CN201610116721.8A CN105571418B (en) | 2016-02-23 | 2016-02-23 | Reinforced beam or post water coupling blasting demolishing method |
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| CN105571418B true CN105571418B (en) | 2018-01-16 |
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| CN105823386B (en) * | 2016-06-03 | 2017-06-09 | 武汉科技大学 | The blasting demolishing method of reinforced concrete brace in a kind of foundation ditch |
| CN108952211A (en) * | 2018-07-03 | 2018-12-07 | 中国人民解放军陆军工程大学 | A kind of demolition blasting device of tubular steel column structure building |
| CN108915295A (en) * | 2018-07-03 | 2018-11-30 | 中国人民解放军陆军工程大学 | A kind of blasting demolishing method of tubular steel column structure building |
| CN108952212A (en) * | 2018-07-04 | 2018-12-07 | 中国人民解放军陆军工程大学 | A kind of device and blasting method for exempting to punch demolition blasting tubular steel column |
| CN110284674A (en) * | 2019-06-11 | 2019-09-27 | 湖北工业大学 | Reinforced concrete stairs embedded hole arrangement and the method for installing handrail and demolition blasting |
| CN112665474A (en) * | 2020-12-22 | 2021-04-16 | 武汉***有限公司 | Green construction process for horizontal concrete supporting structure |
| CN112857156B (en) * | 2021-01-26 | 2022-05-17 | 宏大***工程集团有限责任公司 | Environment-friendly dust suppression blasting method for surface mine and water hole charging blasting method |
| CN114184100B (en) * | 2021-11-03 | 2023-07-18 | 湖北工业大学 | Arrangement and use method of reinforced concrete floor slab embedded pipes under full-life design concept |
| CN114353609B (en) * | 2021-12-21 | 2023-05-12 | 湖北工业大学 | Structure and method for sectional charging in downward blast hole |
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