CN105571418A - Water-coupled charging blasting demolition method for reinforced concrete beam or column - Google Patents
Water-coupled charging blasting demolition method for reinforced concrete beam or column Download PDFInfo
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- CN105571418A CN105571418A CN201610116721.8A CN201610116721A CN105571418A CN 105571418 A CN105571418 A CN 105571418A CN 201610116721 A CN201610116721 A CN 201610116721A CN 105571418 A CN105571418 A CN 105571418A
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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
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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
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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
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
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- Civil Engineering (AREA)
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- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a water-coupled charging blasting demolition method for a reinforced concrete beam or column. The process that blast holes are formed along the axis of the reinforced concrete beam or column and water is poured into the blast holes is adopted, and the aims of reducing resistance of deep hole charging, achieving accurate charging, efficiently utilizing water pressure blasting energy, effectively controlling the strength and amount of vibration of blasting, blasting flyrock, air shock waves and poisonous blasting gas and reducing blasting dust are achieved. According to the method, the process is simple, operation is easy, the application range is wide, and the method is an ideal construction method for demolition of the reinforced concrete beam and column.
Description
Technical field
The invention belongs to blasting engineering field, particularly about a kind of method of reinforced beam or post water coupling demolition blasting.
Background technology
For the dismounting of reinforced beam or post, 201510376852.5), " reinforced column is pre-buried big gun hole and demolition blasting method axially " (application number: the BLASTING TECHNOLOGY FOR DEMOLITION scheme 201510383378.9) proposing axially pre-buried big gun hole invention " reinforced beam axially pre-buried big gun hole and demolition blasting method " (application number:, this technical scheme has evaded a difficult problem of holing in armored concrete, also reduces explosive consumption in a large number.But this technical scheme is when blast hole projectile filling, no matter to reinforced beam or post, when hole depth is greater than 3m, due to the gravity of explosive, the drag effect of blasthole hole wall, in addition the distortion of explosive, is difficult to powder charge (being particularly difficult to accomplish precise intervals powder charge).This can affect demolition effect and safety.One of solution will reduce powder charge resistance exactly.Water coupling is adopted better to address this problem.Meanwhile, adopt water coupling, the harm that explosion produces can be reduced.This is significant for urban demolition blasting.
Summary of the invention
The object of this invention is to provide a kind of method of reinforced beam or post water coupling demolition blasting, specifically in the Blasting Demolition Technology scheme adopting water coupling in beam or the axial arranged big gun hole of post.
The object of the present invention is achieved like this:
A method for reinforced beam water coupling demolition blasting, comprises the following steps:
1) in reinforced beam, arrange both ends open big gun hole;
2) find big gun hole opening, and clean out with pressure wind;
3) in big gun hole through an iron wire or rope as traction rope yarn, make its two ends outside hole;
4) in big gun hole, fill water, and keep water level before powder charge terminates;
5) the outer part silk thread in hole in traction rope yarn one end or adhesive tape colligation is continuous or discontinuous Explosive roll, drags and draws the rope yarn other end, be dragged to by explosive in big gun hole, makes to extend to hole from the detonator of primer [cartridge] extraction or detonator payment to a porter;
6) detonate.
In the method for described reinforced beam water coupling demolition blasting, step 1) in both ends open big gun hole be parallel to reinforced beam axis, its two ends to directly over to or oblique direction bend up, on the termination cross section being opened on reinforced beam or on the side of reinforced beam.
In the method for described reinforced beam water coupling demolition blasting, step 5) another kind of way: part silk thread or the discontinuous Explosive roll of adhesive tape colligation and primacord outside the hole of traction rope yarn one end, drag the rope yarn other end, explosive is dragged in big gun hole, and primacord is extended to outside hole.
In the method for described reinforced beam water coupling demolition blasting, step 1) in both ends open big gun hole along reinforced beam axis step-by-step arrangement.Every section length 3-8m.
A method for reinforced column water coupling demolition blasting, comprises the following steps:
1) in reinforced column, arrange upper end open big gun hole;
2) find big gun hole opening, and clean out with pressure wind;
3) in big gun hole, fill water, and keep water level before powder charge terminates;
4) iron wire or rope one end silk thread or adhesive tape colligation is continuous or discontinuous Explosive roll, subsequently explosive is put into big gun hole, is greater than the stub of blasthole diameter in aperture, big gun hole traverse length, by iron wire or rope yarn colligation on stub; Explosive is suspended in hole, and the detonator of drawing from primer [cartridge] or detonator payment to a porter are extended to outside hole;
5) detonate.
In the method for described reinforced column water coupling demolition blasting, step 1) in upper end open big gun hole be parallel to 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 the side of reinforced column.
In the method for described reinforced column water coupling demolition blasting, step 4) another kind of way: at one end silk thread of iron wire or rope or the discontinuous Explosive roll of adhesive tape colligation and primacord, subsequently explosive is put into big gun hole, the stub of blasthole diameter is greater than in aperture, big gun hole traverse length, by iron wire or rope yarn colligation on stub, explosive is made to be suspended in hole; And primacord is extended to outside hole.
In the method for described reinforced column water coupling demolition blasting, step 1) in upper end open big gun hole arrange along reinforced column axial segmentation.Every height of lift 4-10m.
In the method for above-mentioned reinforced beam or post water coupling demolition blasting, the water injected in big gun hole is running water.
In the method for above-mentioned reinforced beam or post water coupling demolition blasting, by sandstone blocking big gun bore ends before detonating.
Advantage of the present invention:
1) the present invention make use of the lubrication of buoyancy of water and water well, decreases powder charge resistance, can realize more smoothly, powder charge more accurately.
2) present invention utilizes the principle of hydraulic pressure demolition, more efficiently can utilize blasting energy, crushing effect evenly, lumpiness is less; Add the mode taking step-by-step arrangement big gun hole, decrease dynamite quantity per hole, can controlled blasting vibrations effectively, blasting flyrock, the intensity of air-shock wave and quick-fried raw toxic gas and quantity, reduction blasting dust.
3), when big gun hole of the present invention adopts pre-buried pipeline, accomplished the dismounting just considering armored concrete rod member at the beginning of design, significantly reduced adverse effect when demolition blasting.Particularly consider using these pre-buried pipelines as building communication, plumbing, power supply, steam line time, can greatly reduce building life cycle cost, improve building life-cycle benefit.Can predict, this is by impact and the design specification changing existing reinforced beam, post.
4) present invention process is simple, is easy to operation, has wide range of applications.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is an embodiment provided by the invention (this example is reinforced beam) steel for shot generalized section.
Fig. 2 is the generalized section in another embodiment provided by the invention (this example is reinforced beam) step-by-step arrangement big gun hole.
Fig. 3 is an embodiment provided by the invention (this example is reinforced column) steel for shot generalized section.
Fig. 4 is the generalized section in another embodiment provided by the invention (this example is reinforced column) step-by-step arrangement big gun hole.
Fig. 5 is the generalized section of an embodiment provided by the invention (this example is reinforced beam) charge constitution.
Fig. 6 is the generalized section of an embodiment provided by the invention (this example is reinforced column) charge constitution.
In figure, 1-reinforced beam; 2-straight hole; The curved hole of 3-; 4-reinforced column; 5-draws rope yarn; 6-explosive; 7-water; 8-primacord, detonator or detonator payment to a porter; 9-blocks sandstone; 10-stub; 11-suspends silk thread in midair; 12-colligation silk thread.
Detailed description of the invention
Shown in Fig. 1 is an embodiment provided by the invention (this example is reinforced beam, is called for short beam) steel for shot generalized section.Straight hole 2 two ends being parallel to reinforced beam 1 axis arranged in this example upwards bend up and form curved hole 3, and curved hole 3 is opened in the end cross-sectional of beam upper surface and beam respectively.
Curved hole 3 can also bend up obliquely upward, is opened on the side of reinforced beam.
Shown in Fig. 2 is the generalized section in another embodiment provided by the invention (this example for reinforced beam) step-by-step arrangement big gun hole.Step-by-step arrangement big gun hole in this example, straight hole 2 end being parallel to reinforced beam 1 axis arranged in every segmentation bends up, and forms curved hole 3, this routine curved hole 3 to directly over bend up, be opened on the upper surface of beam.One (or two) in middle adjacent bend pipe, slightly to beam both sides deflection, avoid point of intersection to collide.
Curved hole 3 can also be opened on the end cross-sectional of reinforced beam or the side of beam.
Curved hole 3 near beam two ends to bend up some a distance beam-ends cross section 0.3-1.0m on straight hole 2.
Every section length is 3-8m.
Between adjacent two sections of straight tubes 2, spacing (equal adjacent straight tube and bend up a distance) is 0.4-0.8m.
Shown in Fig. 3 is the generalized section that an embodiment provided by the invention (this example is reinforced column, is called for short post) arranges big gun hole, and this routine straight hole 2 is parallel to mast axis, is opened on end face on post.
The upper end of straight hole 2 can also bend, and is opened on the side of post.
Shown in Fig. 4 is the generalized section that another embodiment provided by the invention (this example is reinforced column) axial segmentation arranges big gun hole.This routine all straight hole 2 is parallel to mast axis, and curved hole 3 is opened on post side.
In post, between adjacent two sections of straight holes 2, spacing is 0.5-1.0m.
Every height of lift 4-10m.
Shown in Fig. 5 is the generalized section of an embodiment provided by the invention (this example for reinforced beam, is called for short beam) charge constitution.In figure, along beam axis arranged straight hole 2, straight hole 2 two ends upwards bend up the curved hole 3 of formation two sections, and traction rope yarn 5 is banded with explosive 6 with adhesive tape or silk thread, and primacord, detonator or detonator payment to a porter 8 extend to outside hole, are filled with water 7 in hole.
Shown in Fig. 6 is the generalized section of an embodiment provided by the invention (this example for reinforced column) charge constitution.In figure, the axis of reinforced column 4 arranges a straight hole 2, and straight hole 2 is opened on post upper end face.Suspend the colligation of silk thread 11 lower end colligation silk thread explosive 6 (can be continuous or discontinuous) and primacord, detonator or detonator payment to a porter 8 in midair; Upper end is suspended on stub 10; Primacord, detonator or detonator payment to a porter 8 extension are full of water 7 outside portalling in big gun hole, there is blocking sandstone 9 upper end, big gun hole.
Described hydromining running water.
Described explosive can be continuous or discontinuous cartridge bag, powder column, powder stick.
In the method for above-mentioned reinforced beam or post water coupling demolition blasting, big gun hole can be formed by pre-buried plastic tube when reinforced beam is constructed.Big gun bore ends, without (when being straight hole) time bending, also can be formed with drill hole of drilling machine when removing.
Embodiment 1
Certain reinforced beam (abbreviation beam) needs demolition blasting.It is of a size of long 7.2m, and cross section is wide × and height is 1.2m × 1.5m.
This beam demolition blasting step is:
1) with the PVC plastic pipe of the isometric diameter 38mm of beam along the pre-buried layout of beam axis as big gun hole, plastic tube two ends to directly over bend up, be opened on beam upper surface, bending radius is 0.5m, transfer angle 45 °.
2) find big gun hole opening, and clean out with pressure wind;
3) in big gun hole, draw rope yarn through an iron wire, make its two ends outside hole;
4) in big gun hole, fill water, and keep water level before powder charge terminates;
5) outside the hole of traction rope yarn, part one end adhesive tape is the emulsion explosive cartridge of 32mm, length 20cm, altogether colligation 15 powder sticks every 20cm colligation diameter, and the length of colligation is simultaneously the primacord of 7.0m; At the traction rope yarn other end firmly, powder stick and primacord are dragged in pre-buried big gun hole, are located at straight-tube portion; Primacord is extended to outside hole;
6) detonate.
Embodiment 2
Certain reinforced beam (abbreviation beam) needs demolition blasting.It is of a size of long 12m, and cross section is wide × and height is 0.7m × 1.0m.
This beam demolition blasting step is:
1) two length be 6m, diameter 38mm PVC plastic pipe along the pre-buried layout of the end to end segmentation of beam axis as big gun hole, plastic tube two ends bend up obliquely upward, are opened on beam both side surface respectively successively, and bending radius is 0.5m, transfer angle 60 °.
2) find all big gun holes opening, and clean out with pressure wind;
3) in two big gun holes, draw rope yarn through an iron wire, make its two ends outside hole;
4) in big gun hole, fill water, and keep water level before powder charge terminates;
5) traction rope yarn hole outside part one end adhesive tape colligation diameter be 32mm, length 20cm emulsion explosive cartridge; The continuous colligation in every big gun hole 20 powder sticks; At the traction rope yarn other end firmly, powder stick is dragged in pre-buried big gun hole subsequently, is located at straight-tube portion; The detonator of drawing from primer [cartridge] is extended to outside hole; Two ends, every big gun hole respectively block 0.5m with sandstone.
6) detonate.
Embodiment 3
Certain reinforced column (abbreviation post) needs demolition blasting.It is of a size of high 6.5m, and cross section is long × wide is 0.6m × 0.6m.
This post demolition blasting step is:
1) hole that the length got out along post axis rig is 6.4m, diameter is 36mm is as big gun hole, and big gun hole is opened on capital cross section.
2) find big gun hole opening, and clean out with pressure wind;
3) in big gun hole, fill water, and keep water level before powder charge terminates;
4) length to be rope made of hemp one end silk thread colligation primacord of 7m and diameter be 32mm, length 20cm emulsion explosive cartridge; The discontinuous colligation of powder stick, spacing is 30cm, subsequently powder stick is put into big gun hole, and in aperture, big gun hole, traverse length is 60mm, diameter is the stub of 50mm, by iron wire or rope yarn colligation on stub, makes explosive be suspended in hole; And primacord is extended to outside hole.
5) detonate.
Embodiment 4
Certain reinforced column (abbreviation post) needs demolition blasting.It is of a size of high 20m, and sectional dimension is long × wide is 1.2m × 1.2m.
This post demolition blasting step is:
1) divide two sections of layout big gun holes, every section of 10m is high; Arrange that overall length is that the PVC plastic pipe 2 of 10m diameter 36mm is as big gun hole for every section, all parallel with post axis pre-buried layout, the symmetry axis that two pipes are positioned at post cross section is 0.2m to the distance of kernel of section separately, plastic tube upper-end bent, bending radius 0.5m, angle of bend 60 °, is opened on the side near capital.
2) find all big gun holes opening, and clean out with pressure wind;
3) in big gun hole, fill water, and keep water level before powder charge terminates;
4) in length be 11m rope made of hemp one end on silk thread colligation primacord and diameter be 32mm, length 20cm emulsion explosive cartridge; The discontinuous colligation of powder stick, spacing is 20cm, subsequently powder stick is put into big gun hole, and in aperture, big gun hole, traverse length is 60mm, diameter is the stub of 60mm, by iron wire or rope yarn colligation on stub, makes explosive be suspended in hole; And primacord is extended to outside hole; Every upper end, big gun hole respectively blocks 0.5m with sandstone subsequently;
5) detonate.
Claims (10)
1. a method for reinforced beam water coupling demolition blasting, is characterized in that comprising the following steps:
1) in reinforced beam, arrange both ends open big gun hole;
2) find big gun hole opening, and clean out with pressure wind;
3) in big gun hole through an iron wire or rope as traction rope yarn, make its two ends outside hole;
4) in big gun hole, fill water, and keep water level before powder charge terminates;
5) the outer part silk thread in hole in traction rope yarn one end or adhesive tape colligation is continuous or discontinuous Explosive roll, drags and draws the rope yarn other end, be dragged to by explosive in big gun hole, makes to extend to hole from the detonator of primer [cartridge] extraction or detonator payment to a porter;
6) detonate.
2. the method for reinforced beam water coupling demolition blasting according to claim 1, it is characterized in that: step 1) in both ends open big gun hole be parallel to reinforced beam axis, its two ends to directly over to or oblique direction bend up, on the termination cross section being opened on reinforced beam or on the side of reinforced beam.
3. the method for reinforced beam water coupling demolition blasting according to claim 1, it is characterized in that: step 5) another kind of way: part silk thread or the discontinuous Explosive roll of adhesive tape colligation and primacord outside the hole of traction rope yarn one end, drag the traction rope yarn other end, explosive is dragged in big gun hole, and primacord is extended to outside hole.
4. the method for the reinforced beam water coupling demolition blasting according to claim 1 and 2, is characterized in that: step 1) in both ends open big gun hole along reinforced beam axis step-by-step arrangement.
5. a method for reinforced column water coupling demolition blasting, is characterized in that comprising the following steps:
1) in reinforced column, arrange upper end open big gun hole;
2) find big gun hole opening, and clean out with pressure wind;
3) in big gun hole, fill water, and keep water level before powder charge terminates;
4) iron wire or rope one end silk thread or adhesive tape colligation is continuous or discontinuous Explosive roll, subsequently explosive is put into big gun hole, be greater than the stub of blasthole diameter in aperture, big gun hole traverse length, by iron wire or rope yarn colligation on stub, make explosive be suspended in hole; And the detonator of drawing from primer [cartridge] or detonator payment to a porter are extended to outside hole;
5) detonate.
6. the method for reinforced column water coupling demolition blasting according to claim 5, it is characterized in that: step 1) in upper end open big gun hole be parallel to armored concrete mast axis, its upper end open is on the upper end cross section of reinforced column, or upper-end bent, be opened on the side of reinforced column.
7. the method for reinforced column water coupling demolition blasting according to claim 5, it is characterized in that: step 4) another kind of way: at one end silk thread of iron wire or rope or the discontinuous Explosive roll of adhesive tape colligation and primacord, subsequently explosive is put into big gun hole, the stub of blasthole diameter is greater than in aperture, big gun hole traverse length, by iron wire or rope yarn colligation on stub, explosive is made to be suspended in hole; And primacord is extended to outside hole.
8. the method for the reinforced column water coupling demolition blasting according to claim 5 and 6, is characterized in that: step 1) in upper end open big gun hole arrange along reinforced column axial segmentation.
9. the method for reinforced beam or post water coupling demolition blasting according to claim 1 or 5, is characterized in that: the water injected in big gun hole is running water.
10. the method for reinforced beam or post water coupling demolition blasting according to claim 1 or 5, is characterized in that: by sandstone blocking big gun bore ends before detonating.
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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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| CN105571418A true CN105571418A (en) | 2016-05-11 |
| CN105571418B CN105571418B (en) | 2018-01-16 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 | 武汉爆破有限公司 | Green construction process for horizontal concrete supporting structure |
| CN112857156A (en) * | 2021-01-26 | 2021-05-28 | 宏大爆破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 |
| CN114184100A (en) * | 2021-11-03 | 2022-03-15 | 湖北工业大学 | Method for arranging and using pre-buried pipes of reinforced concrete floor slab under full-life design concept |
| CN114353609A (en) * | 2021-12-21 | 2022-04-15 | 湖北工业大学 | Structure and method for sectionally charging downward blast hole |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 | 武汉爆破有限公司 | Green construction process for horizontal concrete supporting structure |
| CN112857156A (en) * | 2021-01-26 | 2021-05-28 | 宏大爆破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 |
| CN112857156B (en) * | 2021-01-26 | 2022-05-17 | 宏大爆破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 |
| CN114184100A (en) * | 2021-11-03 | 2022-03-15 | 湖北工业大学 | Method for arranging and using pre-buried pipes of reinforced concrete floor slab under full-life design concept |
| CN114353609A (en) * | 2021-12-21 | 2022-04-15 | 湖北工业大学 | Structure and method for sectionally charging downward blast hole |
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| CN105571418B (en) | 2018-01-16 |
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