CN104964624A - Axial embedded blast hole of reinforced concrete beam and blasting demolition method - Google Patents

Axial embedded blast hole of reinforced concrete beam and blasting demolition method Download PDF

Info

Publication number
CN104964624A
CN104964624A CN201510376852.5A CN201510376852A CN104964624A CN 104964624 A CN104964624 A CN 104964624A CN 201510376852 A CN201510376852 A CN 201510376852A CN 104964624 A CN104964624 A CN 104964624A
Authority
CN
China
Prior art keywords
big gun
gun hole
reinforced
buried
buried big
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.)
Granted
Application number
CN201510376852.5A
Other languages
Chinese (zh)
Other versions
CN104964624B (en
Inventor
程大春
叶建军
明军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUHAN HONGWEI TRAFFIC BLASTING ENGINEERING CO., LTD.
Hubei University of Technology
Original Assignee
WUHAN HONGWEI TRAFFIC BLASTING ENGINEERING Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WUHAN HONGWEI TRAFFIC BLASTING ENGINEERING Co Ltd filed Critical WUHAN HONGWEI TRAFFIC BLASTING ENGINEERING Co Ltd
Priority to CN201510376852.5A priority Critical patent/CN104964624B/en
Publication of CN104964624A publication Critical patent/CN104964624A/en
Application granted granted Critical
Publication of CN104964624B publication Critical patent/CN104964624B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The invention provides an axial embedded blast hole of a reinforced concrete beam and a blasting demolition method. The blast hole is formed in the mode that a pipe is embedded in the beam in the axial direction, continuous or discontinuous charging is adopted in the blast hole, a detonating fuse is arranged in the blast hole in an overall-length mode, a stirrup is cut off, and other technical means are taken. In this way, drilling operation is avoided, the number of blast holes and the number of detonators are reduced, consumption of explosive and the detonators is reduced, the smashing effect on reinforced concrete is improved, and the damage of explosion to the environment is reduced. The axial embedded blast hole of the reinforced concrete beam and the blasting demolition method can bring remarkable economic and social benefits.

Description

Reinforced beam is pre-buried big gun hole and demolition blasting method axially
Technical field
The present invention relates to blasting engineering field, relate to the structure in the axial pre-buried big gun hole of a kind of reinforced beam specifically, and utilize the BLASTING TECHNOLOGY FOR DEMOLITION in this pre-buried big gun hole.
Background technology
In engineering construction, a lot of reinforced beam needs to remove.Blasting technique is the efficient means that reinforced beam is removed.For the demolition blasting of reinforced beam, in engineering, common way is the borehole and carry out bursting work of just constructing when wanting building demolition, and the big gun hole arranged is perpendicular to beam axis.This way has a lot of drawback: 1, due to the existence of reinforcing bar in beams of concrete (stirrup particularly gathered), and boring difficulty is very large, and often cost of holing is very high.2, perpendicular to big gun hole utilization rate low (particularly when the cross sectional dimensions of beam is little) when explosion of beam axis arranged, one cuts greatly and will be used for blocking, and the effective length for powder charge is little; And due to big gun hole many, need more detonator and plugging material.3, because big gun hole is many, detonator is many, explosion blocking and blasting network attended operation workload are very large, easily occur the error of maloperation and such as miso-fire and so on.
Summary of the invention
Technical problem to be solved by this invention is to provide the BLASTING TECHNOLOGY FOR DEMOLITION in the axial pre-buried big gun hole of a kind of reinforced beam, the problem of demolition blasting is considered in advance at the beginning of beams of concrete design, specifically axial pre-buried pipeline during beams of concrete construction, form the big gun hole being used for demolition blasting in the future, to reach object that is efficient, low cost demolition blasting beams of concrete.
The object of the present invention is achieved like this: a kind of reinforced beam is pre-buried big gun hole axially, pre-buried big gun hole is axially pre-buried along reinforced beam, on the side on the termination cross section that one or both ends are opened on reinforced beam or near reinforced beam termination; Continuous or discontinuous cartridge bag is had in big gun hole during explosion.
Described pre-buried big gun hole adopts PVC plastic pipe.
Described cartridge bag can replace by powder stick or powder charge pipe belt.
The total length in pre-buried big gun hole has primacord.
Be inserted with detonator in a cartridge bag in continuous cartridge bag in pre-buried big gun hole, the lead-in wire of detonator causes outside pre-buried big gun hole.
The not powder charge of pre-buried big gun bore ends, and adopt stemming or old newsprint blocking.
Utilize reinforced beam axially to carry out a method for reinforced beam demolition blasting in pre-buried big gun hole, comprise the following steps:
1) destroy concrete cover, find the pre-buried big gun hole of pipe, and clear up big gun hole with high-pressure blast;
2) in built-in pipe, insert primacord, and primacord two ends are fixed on outside pre-buried big gun hole, then adopt continuous charging structure, in pre-buried big gun hole, load cartridge bag; Or after adopting the discontinuous cartridge bag of primacord colligation, put into pre-buried big gun hole;
3) primacord is ignited.
Utilize reinforced beam axially to carry out a method for reinforced beam demolition blasting in pre-buried big gun hole, it is characterized in that:
1) destroy concrete cover, find the pre-buried big gun hole of pvc pipe, and clear up big gun hole with pressure wind;
2) in pre-buried big gun hole, adopt the mode powder charge of continuous charging, insert detonator in a cartridge bag wherein, and lead-in wire is caused outside hole; Subsequently with stemming or old newsprint blocking big gun hole;
3) detonating primer.
In above-mentioned two kinds of methods, in step 1) and step 2) between also have a step: adopt cutting pliers, oxygen welding or cutting machine, cut off stirrup in the centre position of a side of reinforced beam or more than one side.
the present invention has following beneficial effect:
Full-time design theory is introduced in the projects of reinforced beam by the present invention, and fundamentally changing the design of building element, construction and dismounting and material reuse, is the revolutionary progress in this area.
BLASTING TECHNOLOGY FOR DEMOLITION scheme provided by the invention, the pre-buried PVC pipeline (PVC pipeline doublely can do wiring architecture and communication line passage) when reinforced beam is constructed.Only need find pvc pipe during Demolition Construction, just can carry out bursting work, avoid and hole in armored concrete, save a large amount of manpower and materials, it also avoid drilling construction noise pollution.
BLASTING TECHNOLOGY FOR DEMOLITION scheme provided by the invention, a beam only needs one or several big gun hole, only needs one or a few primacord; Or one piece or several pieces of detonators.Greatly reduce the consumption of explosive, greatly can improve shotfiring safety in a lot of occasion.Also greatly reduce explosion plug-hole and the workload being connected blasting network, reduce the fault rate of blast operations.
The invention provides axially pre-buried big gun hole scheme, fully blasting energy can be used for the fragmentation of armored concrete, reduce noise of blasting and slungshot, be conducive to shotfiring safety.
BLASTING TECHNOLOGY FOR DEMOLITION scheme provided by the invention, by cuing off the stirrup of beam sides, can reduce the bond stress of stirrup, improves the quick-fried broken effect of explosion, reduces second-time breakage; Also stirrup and concrete circulating and recovering is conducive to.
Present invention, avoiding bore operation, decrease big gun hole and detonator quantity, decrease the consumption of explosive and detonator, improve the crushing effect of armored concrete, alleviate the destruction of explosion to environment; Significant economic and social benefit can be brought.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is an embodiment cross sectional representation (the A-A position of sectional view 2) in the axial pre-buried big gun hole of reinforced beam.
Fig. 2 is that (cross section is in the B-B position of Fig. 1 for the embodiment Longitudinal cross section schematic in the axial pre-buried big gun hole of reinforced beam.
Fig. 3 is the Longitudinal cross section schematic of another embodiment in the axial pre-buried big gun hole of reinforced beam.
Detailed description of the invention
As shown in Figure 1 and Figure 2, a kind of reinforced beam axially pre-buried big gun hole, comprise cross section and the Longitudinal cross section schematic of an embodiment of blast hole loading structure, comprise the cartridge bag 2 in longitudinal reinforcement 4, stirrup 5, longitudinally pre-buried big gun hole 1, pre-buried big gun hole 1 and primacord 3, pre-buried big gun hole 1 is opened on the termination cross section of beam.
Two side interpositions of reinforced beam are equipped with otch 6, and stirrup is cut-off at otch 6 place; Cutting pliers, oxygen welding or cutting machine can be adopted to cut stirrup.
As shown in Figure 1, Figure 3, a kind of reinforced beam axially pre-buried big gun hole, comprise cross section and the Longitudinal cross section schematic of an embodiment of blast hole loading structure, comprise the cartridge bag 2 in longitudinal reinforcement 4, stirrup 5, longitudinally pre-buried big gun hole 1, pre-buried big gun hole 1 and primacord 3, pre-buried big gun hole 1 mid portion is parallel to beam axis, end bends up, and is opened on (i.e. the upper surface of beam) on the side near beam two ends.
Above-mentioned pre-buried big gun hole 1 adopts PVC plastic pipe.
Above-mentioned cartridge bag 2 also can replace by powder stick or powder charge pipe belt in actual use.
In above-mentioned two schemes, when beam length is less than or equal to 6m, the desirable primacord 3 that disappears, uses the detonation mode plugging in detonator in cartridge bag instead.
In such scheme, all right end not powder charge in pre-buried big gun hole, and use stemming or old and useless newspaper blocking.
Embodiment 1
The wide × high × long of reinforced beam is of a size of 0.4m × 0.6 m × 4m, and the pvc pipe of pre-buried diameter 30 mm is as pre-buried big gun hole, and be arranged on beam longitudinal central axis line, length 4 m, both ends open is on beam end cross section.Emulsion explosive cartridge diameter 25mm, length 0.2 m, adopt Discontinuous charge structure, spacing 0.2m.
According to the pre-buried big gun hole of above-mentioned axis and blast hole loading structure, working procedure of the present invention is:
1) destroy concrete cover, find PVC built-in pipe, and clear up pipeline with pressure wind;
2) on primacord with the discontinuous colligation cartridge bag of 0.2m spacing, send into subsequently in built-in pipe;
3) primacord is ignited.
Embodiment 2
The wide × high × long of reinforced beam is of a size of 0.6 m × 0.9 m × 6.5m, and beam two ends are invisible.Two diameters be the pvc pipe of 30mm pre-buried be arranged in beam longitudinally on as pre-buried big gun hole, interlude and beam longitudinal axis parallel, curved on end, on the upper surface near the termination being opened on beam.Two borehole spacing 0.3m, the left and right sides 0.3m of distance beam; Borehole distance is from beam upper surface 0.3m above, below borehole distance from beam lower surface 0.3m.Adopt Discontinuous charge, emulsifying medicine coil diameter 25mm, powder stick length 0.2m, spacing 0.2m.
According to the pre-buried big gun hole of above-mentioned axis and blast hole loading structure, working procedure of the present invention is:
1) destroy concrete cover, find the pre-buried big gun hole of PVC, and clear up pipeline with pressure wind;
2) on primacord with the discontinuous colligation cartridge bag of 0.2m spacing, send in pre-buried big gun hole subsequently;
3) primacord is ignited.
Embodiment 3
The wide × high × long of reinforced beam is of a size of 1.4m × 2.1 m × 6m.To be that the pvc pipe of 32mm is pre-buried be arranged in that beam is longitudinally upper with beam axis being parallel, to be opened on the termination cross section of beam, two borehole spacing 0.7m as pre-buried big gun hole, apart from the left and right sides 0.7m of beam for two diameters; Borehole distance is from beam upper surface 0.7m above, below borehole distance from beam lower surface 0.7m.Adopt continuous charging structure, and adopt stemming plug-hole.Employing diameter is the aqueous gels powder charge pipe of 28mm, length 0.2m.
According to the pre-buried big gun hole of above-mentioned axis and blast hole loading structure, working procedure of the present invention is:
1) destroy concrete cover, find PVC built-in pipe, and clear up pipeline with pressure wind;
2) adopt the form of construction work of cutting pliers, oxygen welding or cutting machine cutting, cut off stirrup in the centre position, two sides of reinforced beam;
3) adopt continuous charging structure, in built-in pipe, load powder charge pipe; And inserting detonator in a powder charge pipe wherein, lead-in wire (fuse cord) causes outside hole; Big gun hole opening part adopts stemming blocking;
4) detonating primer.

Claims (9)

1. a reinforced beam axially pre-buried big gun hole, is characterized in that: pre-buried big gun hole (1) is axially pre-buried along reinforced beam, on the side on the termination cross section that one or both ends are opened on reinforced beam or near reinforced beam termination; During explosion, big gun hole (1) is inner continuous or discontinuous cartridge bag (2).
2. a kind of reinforced beam according to claim 1 axially pre-buried big gun hole, is characterized in that: described pre-buried big gun hole (1) adopts PVC plastic pipe.
3. a kind of reinforced beam according to claim 1 axially pre-buried big gun hole, is characterized in that: described cartridge bag (1) available powder stick or powder charge pipe belt are replaced.
4. a kind of reinforced beam according to claim 1 axially pre-buried big gun hole, is characterized in that: the total length of pre-buried big gun hole (1) is provided with primacord (3).
5. a kind of reinforced beam according to claim 1 axially pre-buried big gun hole, is characterized in that: be inserted with detonator in a cartridge bag in the continuous cartridge bag (2) that pre-buried big gun hole (1) is inner, and the lead-in wire of detonator causes pre-buried big gun hole (1) outside.
6. a kind of reinforced beam according to claim 1 axially pre-buried big gun hole, is characterized in that: the end not powder charge of pre-buried big gun hole (1), and adopts stemming or old newsprint blocking.
7. utilize the reinforced beam described in claim 1 axially to carry out the method for reinforced beam demolition blasting in pre-buried big gun hole, it is characterized in that: comprise the following steps:
1) destroy concrete cover, find the pre-buried big gun hole (1) of pipe, and clear up big gun hole with high-pressure blast;
2) in built-in pipe, insert primacord (3), and primacord (3) two ends are fixed on pre-buried big gun hole (1) outward, then adopt continuous charging structure, in pre-buried big gun hole (1), load cartridge bag (2); Or after adopting the discontinuous cartridge bag of primacord (3) colligation, put into pre-buried big gun hole (1);
3) primacord (3) is ignited.
8. utilize the reinforced beam described in claim 5 axially to carry out the method for reinforced beam demolition blasting in pre-buried big gun hole, it is characterized in that: comprise the following steps:
1) destroy concrete cover, find the pre-buried big gun hole (1) of pvc pipe, and clear up big gun hole with pressure wind;
2) in pre-buried big gun hole (1), adopt the mode powder charge of continuous charging, insert detonator in a cartridge bag wherein, and lead-in wire is caused outside hole; Subsequently with stemming or old newsprint blocking big gun hole;
3) detonating primer.
9. the method for the reinforced beam demolition blasting according to claim 7 or 8, it is characterized in that: in step 1) and step 2) between also have a step: adopt cutting pliers, oxygen welding or cutting machine, cut off stirrup in the centre position of a side of reinforced beam or more than one side.
CN201510376852.5A 2015-07-01 2015-07-01 Reinforced beam axially pre-buried blasthole and demolition blasting method Active CN104964624B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510376852.5A CN104964624B (en) 2015-07-01 2015-07-01 Reinforced beam axially pre-buried blasthole and demolition blasting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510376852.5A CN104964624B (en) 2015-07-01 2015-07-01 Reinforced beam axially pre-buried blasthole and demolition blasting method

Publications (2)

Publication Number Publication Date
CN104964624A true CN104964624A (en) 2015-10-07
CN104964624B CN104964624B (en) 2018-05-22

Family

ID=54218678

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510376852.5A Active CN104964624B (en) 2015-07-01 2015-07-01 Reinforced beam axially pre-buried blasthole and demolition blasting method

Country Status (1)

Country Link
CN (1) CN104964624B (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105587119A (en) * 2016-01-29 2016-05-18 武汉爆破有限公司 Cast-in-place concrete pre-buried hole forming device and cast-in-place concrete pre-buried shot hole forming method thereof
CN105627845A (en) * 2016-02-22 2016-06-01 叶建军 Long charging bag and method for charging blast holes through long charging bag
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
CN106049503A (en) * 2016-06-06 2016-10-26 武汉科技大学 Pretreatment method for blasting demolition of reinforced concrete supporting beam in foundation pit
CN106437197A (en) * 2016-07-29 2017-02-22 上海建工四建集团有限公司 Static crushing structure for removing concrete and construction method thereof
CN108827094A (en) * 2018-07-04 2018-11-16 中国人民解放军陆军工程大学 The demolition blasting device of H profile steel workshop and blasting method
CN108871126A (en) * 2018-07-04 2018-11-23 中国人民解放军陆军工程大学 Utilize the device of preformed particles medium explosion power transmission tower
CN108871128A (en) * 2018-07-04 2018-11-23 中国人民解放军陆军工程大学 A method of utilizing preformed particles medium explosion power transmission tower
CN108871127A (en) * 2018-07-04 2018-11-23 中国人民解放军陆军工程大学 A kind of demolition set of steel angle structure power transmission tower and blasting method
CN109680986A (en) * 2019-01-10 2019-04-26 哈尔滨理工大学 Reinforced concrete structure static state noiseless method for dismounting
CN109707118A (en) * 2019-01-18 2019-05-03 湖北工业大学 As pre-buried arrangement and method of the downpipe in building periphery pillar for removing blasthole
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

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105587119A (en) * 2016-01-29 2016-05-18 武汉爆破有限公司 Cast-in-place concrete pre-buried hole forming device and cast-in-place concrete pre-buried shot hole forming method thereof
CN105627845A (en) * 2016-02-22 2016-06-01 叶建军 Long charging bag and method for charging blast holes through long charging bag
CN105627845B (en) * 2016-02-22 2018-08-24 叶建军 The long bag of powder charge and using the long bag of powder charge to the method for blast hole projectile filling
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
CN106049503A (en) * 2016-06-06 2016-10-26 武汉科技大学 Pretreatment method for blasting demolition of reinforced concrete supporting beam in foundation pit
CN106049503B (en) * 2016-06-06 2017-11-10 武汉科技大学 The preprocess method of reinforced concrete brace demolition blasting in a kind of foundation ditch
CN106437197A (en) * 2016-07-29 2017-02-22 上海建工四建集团有限公司 Static crushing structure for removing concrete and construction method thereof
CN108827094A (en) * 2018-07-04 2018-11-16 中国人民解放军陆军工程大学 The demolition blasting device of H profile steel workshop and blasting method
CN108871126A (en) * 2018-07-04 2018-11-23 中国人民解放军陆军工程大学 Utilize the device of preformed particles medium explosion power transmission tower
CN108871128A (en) * 2018-07-04 2018-11-23 中国人民解放军陆军工程大学 A method of utilizing preformed particles medium explosion power transmission tower
CN108871127A (en) * 2018-07-04 2018-11-23 中国人民解放军陆军工程大学 A kind of demolition set of steel angle structure power transmission tower and blasting method
CN109680986A (en) * 2019-01-10 2019-04-26 哈尔滨理工大学 Reinforced concrete structure static state noiseless method for dismounting
CN109707118A (en) * 2019-01-18 2019-05-03 湖北工业大学 As pre-buried arrangement and method of the downpipe in building periphery pillar for removing blasthole
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

Also Published As

Publication number Publication date
CN104964624B (en) 2018-05-22

Similar Documents

Publication Publication Date Title
CN102678120B (en) Method for releasing pressure and removing danger of rock burst
CN201306157Y (en) Pipe column and perforation column for device in a well
RU2411353C2 (en) Procedure for firing perforation holes in underground formation
EP2670951B1 (en) Connection cartridge for downhole string
WO2016165396A1 (en) Downhole coal seam pulse detonation wave directional fracturing permeability-increasing method
US2201290A (en) Method and means for perforating well casings
CA2772412C (en) A method of underground rock blasting
US20040206503A1 (en) Casing conveyed well perforating apparatus and method
NL7907284A (en) Method and apparatus for cutting tubes.
CN102644471B (en) Hole sealing machine and hole sealing method using hole sealing machine to perform small aperture grouting for anchoring anchor rope
FI111871B (en) Device and method of breaking material
CN103924956B (en) A kind of lump coal exploitation Advance presplitting method
CN101644156A (en) Method for weakening coal-rock mass by hydraulic blasting and fracturing
CN105333778B (en) Medium-length hole big cross section is combined Cut Blasting structure and method
CN103940309B (en) A kind of method of underground blasting Cheng Jing
CN103195466A (en) Directional water pressure blasting method for improving coal bed gas permeability
CN101441055A (en) Presplit blasting method
CN102878876B (en) Mine roadway advancing and undermining method and main blasting parameters
CN102914226A (en) Hollow-hole rhombic parallel cut blasting damping method
CN102678117B (en) Directional hydraulic fracturing method based on energizing blasting
US20150361759A1 (en) A method of plugging a well
CN206208121U (en) Directional fracture blasting device
RU163752U1 (en) Stop
CN204902691U (en) Bunch multi pack that blasting networking was used is put
CN103321669B (en) Method for increasing permeability of low-permeability coal seam by means of deep-hole directional pre-splitting blasting

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20180420

Address after: 430068 Eru, Wuhan, Hongshan, Hubei, No. 28

Applicant after: Hubei Industry University

Applicant after: WUHAN HONGWEI TRAFFIC BLASTING ENGINEERING CO., LTD.

Address before: 430000 Hubei Province, Wuhan city Huangpi District Xuan Ling Jie Hu Qiao Cun Peng Jia Chong No. 7

Applicant before: WUHAN HONGWEI TRAFFIC BLASTING ENGINEERING CO., LTD.

GR01 Patent grant
GR01 Patent grant