CN103868425A - High-rise shearing wall structure building directed and bi-directional folding exploding device and method - Google Patents
High-rise shearing wall structure building directed and bi-directional folding exploding device and method Download PDFInfo
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Abstract
The invention discloses a high-rise shearing wall structure building directional and bi-directional folding exploding device and a high-rise shearing wall structure building directional and bi-directional folding exploding method and relates to the technical field of directional explosion. The device comprises an electric detonator, a high-energy igniter, non-electric-conduction exploding pipes, room explosion starting points, cannon holes, first explosion-guiding pipes, floor explosion starting points and second explosion-guiding pipes, wherein the cannon holes are formed in the room explosion starting points; every two cannon holes are connected by one first explosion-guiding pipe; a plurality of room explosion starting points form the floor explosion starting points; every two floor explosion starting points are connected by one non-electric conduction exploding pipe; floor explosion starting points on the most bottom layer are connected with one end of the electric detonator by the second explosion-guiding pipes; the other end of the electric detonator is connected with the high-energy igniter. The method is simple and convenient to operate, a multi-point explosion starting multi-passage closed serial/parallel net composite network structure is formed, the serial/parallel net composite network explosion transmission is safe and reliable, blind explosion is not caused, and the success of explosion is guaranteed.
Description
Technical field:
The present invention relates to directional blasting technology field, be specifically related to Tall Shear Wall Structures building orientation and bidirection folding blasting device and method.
Background technology:
The dismounting in building has two kinds of methods, one is to adopt mechanical removal, another kind is to adopt directional blasting technology to remove, mechanical removal normally adopts excavator to carry out work, dismounting speed is like this too slow, and expend a large amount of labours, and demolition blasting has and saves time, the advantages such as labor intensive material resources are few, therefore be widely used, the general step of existing bursting work is all to the coyote hole of the big gun hole of wanting the medium of explosion to get out or excavation or lays explosive on its surface, put into detonating capsule, then ignite, in ignition process, easily there is blind big gun, it is not very desirable causing demolition effect.
Summary of the invention:
The object of this invention is to provide Tall Shear Wall Structures building orientation and bidirection folding blasting device and method, its method is simple, easy to operate, the grid-connected multibranch network structure of string of composition multipoint priming multichannel closure, the grid-connected multibranch network propagation of explosion of going here and there is safe and reliable, there is no blind big gun, ensured the successful of explosion.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: it comprises electric cap 1, high energy igniter 2, nonel tube 3, room fire point 4, big gun hole 5, the first detonator 6, floor fire point 7 and the second detonator 8, in room fire point 4, be provided with several big guns hole 5, between two big gun holes 5, adopt the first detonator 6 to connect, several rooms fire point 4 forms floor fire point 7, between two floor fire points 7, adopt nonel tube 3 to connect, the floor fire point 7 of the bottom is connected with one end of electric cap 1 by the second detonator 8, the other end of electric cap 1 is connected with high energy igniter 2.
In described big gun hole 5, be provided with PVC charge tube, the diameter of PVC charge tube is 2-5cm, the inner emulsion of placing of PVC charge tube.
Operation principle of the present invention is: it adopts nonel tube double-detonating network, first the big gun hole 5 on chummery shear wall is connected with the first detonator 6, then will connect into closed multibranch network with the big gun hole 5 in each room of layer, after the blasting network of same layer connects, connect into up and down between layers multichannel closed network, finally the second detonator 2 is connected on electric cap 1, detonates with high energy initiator 2.
The present invention has following beneficial effect: its method of ignition is simple, easy to operate, the grid-connected multibranch network structure of string of composition multipoint priming multichannel closure, and the grid-connected multibranch network propagation of explosion of going here and there is safe and reliable, there is no blind big gun, has ensured the successful of explosion.
Brief description of the drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of example 1 in the present invention.
Detailed description of the invention:
With reference to Fig. 1, this detailed description of the invention is taked following technical scheme: it comprises electric cap 1, high energy igniter 2, nonel tube 3, room fire point 4, big gun hole 5, the first detonator 6, floor fire point 7 and the second detonator 8, in room fire point 4, be provided with several big guns hole 5, between two big gun holes 5, adopt the first detonator 6 to connect, several rooms fire point 4 forms floor fire point 7, between two floor fire points 7, adopt nonel tube 3 to connect, the floor fire point 7 of the bottom is connected with one end of electric cap 1 by the second detonator 8, the other end of electric cap 1 is connected with high energy igniter 2.
In described big gun hole 5, be provided with PVC charge tube, the diameter of PVC charge tube is 2-5cm, the inner emulsion of placing of PVC charge tube.
The operation principle of this detailed description of the invention is: adopt nonel tube double-detonating network, first the big gun hole 5 on chummery shear wall is connected with the first detonator 6, then will connect into closed multibranch network with the big gun hole 5 in each room of layer, after the blasting network of same layer connects, connect into up and down between layers multichannel closed network, finally the second detonator 2 is connected on electric cap 1, detonates with high energy initiator 2.
This detailed description of the invention has following beneficial effect: its method is simple, easy to operate, the grid-connected multibranch network structure of string of composition multipoint priming multichannel closure, and the grid-connected multibranch network propagation of explosion of going here and there is safe and reliable, there is no blind big gun, has ensured the successful of explosion.
Embodiment 1: with reference to Fig. 2, carry out calculation specifications with the full shear wall structure building of two unit 18 floor:
1, the breach in a district is determined: the space of collapsing, a southern side, district is larger, therefore adopt the blasting method of arranging a blasting gap, Directional Collapse to the south in bottom.According to similar engineering construction experience, the normal angle design of the collapsing disintegration cut height of toppling that adopts in explosion, its computing formula is:
h＝Btanα
n＝h/h
c
Wherein: h-blastingcutheight, m;
B-building width, m; Get 14.7m
α-the angle of collapsing, blasting gap summit is to the angle collapsing between hinge point line and horizontal line; Generally get 25-40 °
H
c-story height, 2.8m.
N---the blasting gap distribution number of plies
Building is shear wall structure, good integrity, and choosing the angle of collapsing is 35, calculates according to formula:
h＝Btanα＝14.7×tan35°＝14.7×0.7＝10.29m
n＝h/h
c＝10.29/2.8＝3.68。
Be that blastingcutheight reaches 4 layers and can make building collapse, in order to ensure to collapse and crushing effect, determine to take the blasting gap of 14m, explode 5 layers, building.
2, two district's blasting gaps are determined: two north sides, district only have 40m apart from community road, cable channel 37.5m.Be less than building height, in order to reduce Collapse Length, take the folding mode of collapsing of two way alternate, on building body, arrange three blasting gaps.Blasting gap position is: down gap is arranged in 1-4 layer, and middle blasting gap is arranged in 8-10 layer, and top blasting gap is arranged in 14-15 layer.
3, the inner shear wall thickness in this building is two kinds of 20cm and 24cm, outside shear wall thickness 24cm, and after pretreatment, the shear wall of same thickness can adopt identical blasting parameter.
Minimum burden W:W=1/2 × δ, in formula, δ is shear wall thickness, and 20cm shear wall minimum burden is 10cm, and 24cm shear wall minimum burden is 12cm.
Pitch-row a, array pitch b: according to the practical experience of railway designing institute, for reinforced concrete wall, a=(1.2～2.0) W, 20cm shear wall is got a=20cm, and 24cm shear wall is got a=22cm.Array pitch is got b=20cm.
Hole depth l: reinforced concrete wall hole depth is got l=0.65 δ, 20cm shear wall hole depth is 13cm, 24cm shear wall hole depth is 16cm.In the time of wall matcoveredn, increase the degree of depth.
Explosive specific charge q: in order to ensure that lower floor's blasting gap can scrap completely, distance that simultaneously again can control of flyrock, interior wall explosive specific charge is got 2500g/m
3, exterior wall explosive specific charge is got 2000g/m
3, calculating according to Q=q δ ab, building one district 1-5 floor, two district 1-4 floor are blasting gap, interior wall single hole explosive payload is 20g～35g, exterior wall single hole explosive payload 25～30g.North side two district 8-10 floor, 14-15 floor blasting gap, highly higher, slungshot control needs stricter, therefore needs strict Charge control, selects unit consumption 1500g/m
3, interior wall single hole explosive payload 12g～20g, exterior wall single hole explosive payload 20g.
Big gun hole is arranged: the floor height of floor is 2.8m, in order to save man-hour and construction cost, according to construction experience, can take the mode in " previous-next " point two sections of cloth holes, and it is identical that effect and shear wall are covered with big gun hole.When boring, consider practical operation, from starting cloth hole apart from bottom 0.3m.For the body of wall that needs explosion in breach, take " 3-4 " pattern, in the high scope of 2.8m, three rounds are arranged on top, lower disposed four rounds, boring amount and total charge can be reduced in cloth hole like this, can form equally the blasting gap of design, after explosion, demolition effect are not had to impact.
4, according to collapsing requirement, by time delay outside hole, four blasting gaps are divided into Si Gebao district, southern side one district's down gap is the quick-fried district of I, two upper notch WeiIIBao districts of district, north side, central indentation WeiIIIBao district, down gap WeiIVBao district, the quick-fried district of I and the quick-fried interval of II are every 2s, and the quick-fried interval of IIBao district and III is every 2s, and the quick-fried interval of IIIBao district and IV is every 1s.
Claims (3)
1. Tall Shear Wall Structures building orientation and bidirection folding blasting device and method, it is characterized in that it comprises electric cap (1), high energy igniter (2), nonel tube (3), room fire point (4), big gun hole (5), the first detonator (6), floor fire point (7) and the second detonator (8), in room fire point (4), be provided with several big guns hole (5), between two big gun holes (5), adopt the first detonator (6) to connect, several rooms fire points (4) composition floor fire points (7), between two floor fire points (7), adopt nonel tube (3) to connect, the floor fire point (7) of the bottom is connected with one end of electric cap (1) by the second detonator (8), the other end of electric cap (1) is connected with high energy igniter (2).
According to claim 1 Tall Shear Wall Structures building directed with bidirection folding blasting device and method, it is characterized in that being placed with PVC charge tube in described big gun hole (5), the diameter of PVC charge tube is 2-5cm, the inner emulsion of placing of PVC charge tube.
According to claim 1 Tall Shear Wall Structures building directed with bidirection folding blasting device and method, it is characterized in that it adopts nonel tube double-detonating network, first big gun hole (5) on chummery shear wall is connected with the first detonator (6), then will connect into closed multibranch network with the big gun hole (5) in each room of layer, after the blasting network of same layer connects, connect into up and down between layers multichannel closed network, finally the second detonator (2) is connected to electric cap (1) upper, detonates with high energy initiator (2).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401742A (en) * | 2015-10-09 | 2016-03-16 | 珠海爆破新技术开发有限公司 | Blasting demolition construction key technology and construction method of intersecting-parallels-shaped high-rise building |
| CN107576237A (en) * | 2017-10-30 | 2018-01-12 | 广西大学 | Subregion demolition blasting network apparatus when nonel tube plays blast hole extension |
| CN110553560A (en) * | 2019-09-11 | 2019-12-10 | 辽宁工程技术大学 | Blasting demolition method for building |
| CN112985209A (en) * | 2021-02-09 | 2021-06-18 | 江西荣达爆破新技术开发有限公司 | Detonation method suitable for blasting demolition |
| CN113154978A (en) * | 2021-05-19 | 2021-07-23 | 核工业南京建设集团有限公司 | Frame cylinder high-rise building blasting demolition method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105401742A (en) * | 2015-10-09 | 2016-03-16 | 珠海爆破新技术开发有限公司 | Blasting demolition construction key technology and construction method of intersecting-parallels-shaped high-rise building |
| CN107576237A (en) * | 2017-10-30 | 2018-01-12 | 广西大学 | Subregion demolition blasting network apparatus when nonel tube plays blast hole extension |
| CN107576237B (en) * | 2017-10-30 | 2023-07-21 | 广西大学 | Partition demolition blasting network device for non-electric blasting tube blasthole epitaxy |
| CN110553560A (en) * | 2019-09-11 | 2019-12-10 | 辽宁工程技术大学 | Blasting demolition method for building |
| CN112985209A (en) * | 2021-02-09 | 2021-06-18 | 江西荣达爆破新技术开发有限公司 | Detonation method suitable for blasting demolition |
| CN113154978A (en) * | 2021-05-19 | 2021-07-23 | 核工业南京建设集团有限公司 | Frame cylinder high-rise building blasting demolition method |
| CN113154978B (en) * | 2021-05-19 | 2022-05-31 | 核工业南京建设集团有限公司 | Frame cylinder high-rise building blasting demolition method |
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Application publication date: 20140618 |