CN109708547A - A kind of surface mine presplit blasting means for loading - Google Patents
A kind of surface mine presplit blasting means for loading Download PDFInfo
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- CN109708547A CN109708547A CN201910048488.8A CN201910048488A CN109708547A CN 109708547 A CN109708547 A CN 109708547A CN 201910048488 A CN201910048488 A CN 201910048488A CN 109708547 A CN109708547 A CN 109708547A
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- powder charge
- ceasma
- loading
- surface mine
- truncated cone
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- 238000005422 blasting Methods 0.000 title claims abstract description 43
- 238000011068 loading method Methods 0.000 title claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 72
- 239000002360 explosive Substances 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 230000008602 contraction Effects 0.000 claims 1
- 239000003814 drug Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000004880 explosion Methods 0.000 description 7
- 239000000295 fuel oil Substances 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 3
- 238000005474 detonation Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of surface mine presplit blasting means for loadings, suitable for current domestic air bench blasting operation.The present invention uses novel means for loading, and explosive is fitted into truncated cone-shaped powder charge pipe and is ignited with primacord, to reach stringent not isometrical radial Uncoincided charge.On charge constitution, present invention employs the truncated cone-shaped powder charge pipes for having scalability, while being provided with circular baffle plate on truncated cone-shaped powder charge pipe, and to play the role of air-spacer, while it is askew to prevent powder charge funnel from putting；In the arrangement of pre- ceasma, present invention decreases the pitch-rows of pre- ceasma, and take spaced loading, i.e., a medicine are filled every a hole, to reduce explosive payload；On the line of network, the present invention takes hole-by-hole blasting circuit.The present invention has the advantages that materials are convenient, low in cost, simple convenient for storing and transporting, arrange, while can greatly improve quick-fried rear Half cast factor and effectively drop vibration, has wide applicability in the presplit blasting operation of current domestic surface mine.
Description
Technical field
The invention belongs to surface mines to exploit field, be applied to reduce blasting vibration operation in surface mine recovery process,
More particularly to a kind of surface mine presplit blasting means for loading.
Background technique
During surface mine exploitation, such as blasting vibration, blasting flyrock, explosion can be generated in demolition site and is made an uproar
The ill-effects such as sound, blasting dust and pernicious gas.Damage of these ill-effects to local-style dwelling houses around environment and mining area is not
Hold and ignores, and in these ill-effects, blasting vibration is especially prominent to the damage of the house of local-style dwelling houses around and other buildings,
Therefore, blasting vibration is reduced in surface blasting, is of great significance for the improvement of explosion surrounding enviroment.
Presplit blasting is a kind of widely used method, when presplit blasting refers to progress rock excavation, in the explosion of the area Zhu Bao
Forward position design profile line first produce the through crack with one fixed width, to buffer, reflect the vibration wave of Excavation blasting,
It is controlled to the destroying infection for retaining rock mass, is allowed to obtain more smooth outline excavation.But currently used presplit blasting
Method have powder charge difficult, the disadvantages of explosive payload causes greatly the caused vibration in presplit blasting hole larger.
Based on the problem present on, the present invention devises a kind of surface mine presplit blasting means for loading, fills to reducing
It is significant to reduce explosive payload save the cost for medicine difficulty
Summary of the invention
Present invention seek to address that powder charge is difficult when surface mine presplit blasting at present, explosive payload is big, working efficiency is low, explosion
The disadvantages of Shi Zhendong is big proposes a kind of surface mine presplit blasting means for loading.
The technical solution adopted in the present invention is as follows:
A kind of surface mine presplit blasting means for loading, it is using spacer holes powder charge, i.e., primary every a hole dress
Medicine；
ANFO explosives prill is packed into PVC by powder charge funnel by a kind of surface mine presplit blasting means for loading
In powder charge pipe made of material, eliminates cumbersome powder stick of tying up and work；
A kind of surface mine presplit blasting means for loading carries out powder charge using truncated cone-shaped powder charge pipe, guarantees powder charge
Amount equably reduces to aperture from bottom hole, forms stringent not isometrical radial Uncoincided charge；
A kind of surface mine presplit blasting means for loading in order to avoid the too long influence storage of powder charge pipe and transports,
Using telescopic powder charge pipe, when use, can stretch out powder charge pipe；
A kind of surface mine presplit blasting means for loading designs a diameter and tube bottom around powder charge pipe nozzle
Identical circular baffle plate, there are three effects for baffle:
1) facilitate top powder charge funnel to be put into powder charge pipe nozzle, avoid powder charge funnel from putting askew；
2) air-spacer is replaced, directly backfills drilling cuttings after taking out powder charge funnel after powder charge, is made in explosive and filling
Between just have certain airspace section, airspace, which has, extends detonation stresses action time, improves the effect of demolition effect；
3) handle effect is served as when stretching out powder charge pipe.This charging means can simplify powder charge, reduces powder charge difficulty, mentions
High loading rate.
A kind of surface mine presplit blasting means for loading should reduce the pitch-row of pre- ceasma, presplitting in use process
The spacing in hole takes a=(7-12) D, and wherein D is pre- ceasma aperture, generally takes smaller value.The explosive payload of each pre- ceasma is according to rock
Stone property and field experience obtain.
The present invention using producible the utility model has the advantages that
1) a kind of surface mine presplit blasting means for loading described in, is obtained by field experiment, uses technology with current
It compares, drop vibration effect can be improved about 40%；
2) surface mine presplit blasting means for loading proposed by the invention can the perfect effect for realizing presplit blasting, and
And powder charge is simple, and explosive payload can be made to reduce about 10%；
3) surface mine presplit blasting means for loading proposed by the invention is reduced using spacer holes powder charge and explosive payload, can
Substantially reduce the blasting vibration due to caused by pre- ceasma explosion；
4) surface mine presplit blasting means for loading proposed by the invention may be implemented more pre- ceasmas while detonate, and subtract
Few pre- ceasma detonation number of segment is to avoid pre- ceasma from being superimposed with main armament area detonation stresses.
Detailed description of the invention
Attached drawing 1 is means for loading schematic diagram of the invention；
Attached drawing 2 is charging means schematic diagram of the invention；
Attached drawing 3 is charge constitution schematic diagram of the invention；
Attached drawing 4 is cloth hole schematic diagram of the invention；
Attached drawing 5 is network line graph of the invention.
Each number designation indicates in figure: 1, top powder charge funnel, 2, baffle, 3, scalable truncated cone-shaped powder charge pipe 4, lead it is quick-fried
Rope, 5, ammonium nitrate-fuel oil mixture, 6, filling, 7, air, 8, the pre- ceasma of powder charge, 9, the pre- ceasma of not powder charge, 10, cushion hole, 11, main armament hole,
12, fire point, 13, pre- ceasma, 14, detonator and section are other in hole, 15, detonator and section are other outside hole.
Specific embodiment
Where further describing the technical solution and advantage of presplit blasting of the present invention, it is described more fully below
The embodiment of this patent, the content and accompanying drawings of the presplit blasting method represent in the accompanying drawings, it should be noted that
Described embodiment is a part of the embodiment of the application, instead of all the embodiments.Based on the embodiment in the application,
Other embodiments obtained belong to this to one of ordinary skilled in the art without making creative work
Apply for the range of protection.
A kind of surface mine presplit blasting means for loading shown in -5, chief component include: top powder charge referring to Fig.1
Funnel 1, baffle 2, scalable truncated cone-shaped powder charge pipe 3, primacord 4, ammonium nitrate-fuel oil mixture 5, filling 6, air 7, the pre- ceasma 8 of powder charge, no
The pre- ceasma 9 of powder charge, cushion hole 10, blasthole 11, fire point 12, pre- ceasma 13, in hole detonator and section is other 14, outside hole detonator and
Section other 15.
Explosive is put into rotary table by powder charge funnel 1 by means for loading schematic diagram of the invention shown in referring to Fig.1, the present invention
In shape dress pencil 3, eliminates and cumbersome tie up the work such as powder stick；
Further, truncated cone-shaped powder charge pipe 3 is made using PVC material, can change device according to the size of blasthole size
Size.
Referring to charging means schematic diagram of the invention shown in Fig. 2, steps are as follows for powder charge:
S1, it is drilled according to explosion design instruction, and pre- ceasma pitch-row is reduced according to design instruction；
S2, it will stretch out, be then placed in the pre- ceasma 8 of powder charge in the truncated cone-shaped powder charge pipe 3 for shrinking contracting state；
S3, powder charge funnel 1 is loaded on 3 top of truncated cone-shaped powder charge pipe；
S4, primacord 4 is put into 3 bottom of truncated cone-shaped powder charge pipe along powder charge funnel 1, by ammonium nitrate-fuel oil mixture 5 from powder charge funnel 1
In pour into truncated cone-shaped powder charge pipe 3.
Referring to charge constitution schematic diagram of the invention shown in Fig. 3, filled to the ammonium nitrate-fuel oil mixture 5 in truncated cone-shaped powder charge pipe 3
Afterwards, top powder charge funnel 1 is taken out；
Further, drilling cuttings 6 is directly backfilled on baffle 2, makes to generate air between ammonium nitrate-fuel oil mixture 5 and the pre- ceasma 8 of powder charge
Interval 7.
Referring to cloth hole schematic diagram of the invention shown in Fig. 4, the pre- ceasma takes spaced loading, that is, is respectively disposed with dress
The pre- ceasma 8 of medicine and the pre- ceasma 9 of not powder charge, the pre- ceasma 8 of powder charge carry out powder charge, the pre- ceasma 9 of not powder charge according to method shown in Fig. 2, Fig. 3
It is without any processing；
Further, the cloth hole boundary of pre- split plot should exceed main armament area.One row buffering is set between main armament area and pre- ceasma
Hole 10,10 spacing very little of cushion hole, about 0.5-0.7 times of 11 spacing of main armament hole, charge constitution and main armament hole 11 are consistent.
Network line graph of the invention referring to Figure 5, pre- ceasma 13 are connected using primacord 4, and main armament area uses hole
Nonel detonator 15 connects outside interior Nonel detonator 14 and hole, and is detonated using hole-by-hole initiation mode in regulation fire point 12, with
Phase is effectively reduced vibration when explosion.
Although having shown and having described presplit blasting means for loading of the present invention above, it is to be understood that with
On be it is illustrative, be not considered as limiting the invention, can make on this basis according to actual demand with needle
Adjustment to property, to obtain different embodiments.
Claims (5)
1. a kind of surface mine presplit blasting means for loading, which is characterized in that composition includes:
Powder charge funnel, when powder charge, are put into truncated cone-shaped powder charge pipe, and explosive is fitted into powder charge pipe；
Scalable truncated cone-shaped powder charge pipe is stretched out in use process, is placed in the pre- ceasma of powder charge；
Powder charge pipe upper guard-plate is located at powder charge tube top portion, for being spaced air.
2. a kind of surface mine presplit blasting means for loading according to claim 1, it is characterised in that charge constitution uses
Not isometrical radial decoupling charge structure.
3. a kind of surface mine presplit blasting means for loading according to claim 1, it is characterised in that using on powder charge pipe
The baffle in portion replaces air-spacer.
4. a kind of surface mine presplit blasting means for loading according to claim 1, it is characterised in that reduce pre- ceasma
Pitch-row, and use spaced loading, i.e., be provided with the pre- ceasma of powder charge and the pre- ceasma of not powder charge simultaneously.
5. a kind of surface mine presplit blasting means for loading described in -4 according to claim 1, which is characterized in that including following step
It is rapid:
Firstly, drilling in assigned work face by the position being pre-designed, the truncated cone-shaped powder charge pipe in contraction state is stretched
It opens, is put into the pre- ceasma of powder charge, then powder charge funnel is put into powder charge pipe；
Then, primacord is put into truncated cone-shaped powder charge bottom of the tube along powder charge funnel, porous particulated ammonium oil explosive is poured into rotary table
In shape dress pencil, powder charge funnel is taken out, and backfill drilling cuttings；
Again, pre- ceasma takes spaced loading, main armament hole and cushion hole normal charge；
Finally, pre- ceasma is connected with primacord, main armament hole is connected with cushion hole with Nonel detonator, after network connects,
Carrying out warning can detonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048488.8A CN109708547A (en) | 2019-01-18 | 2019-01-18 | A kind of surface mine presplit blasting means for loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048488.8A CN109708547A (en) | 2019-01-18 | 2019-01-18 | A kind of surface mine presplit blasting means for loading |
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| Publication Number | Publication Date |
|---|---|
| CN109708547A true CN109708547A (en) | 2019-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910048488.8A Pending CN109708547A (en) | 2019-01-18 | 2019-01-18 | A kind of surface mine presplit blasting means for loading |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823030A (en) * | 2019-10-23 | 2020-02-21 | 包头钢铁（集团）有限责任公司 | Method for protecting rear rock mass by large-scale blasting of strip mine |
| RU2784839C1 (en) * | 2022-04-29 | 2022-11-30 | Владимир Арнольдович Белин | Method for carrying out explosive operations in the circuit zone of quarry |
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|---|---|---|---|---|
| US2487317A (en) * | 1945-02-09 | 1949-11-08 | Ici Ltd | Explosive cartridge for plaster shooting |
| US2703528A (en) * | 1953-11-05 | 1955-03-08 | Maumee Collieries Company | Blasting process |
| GB778760A (en) * | 1955-01-26 | 1957-07-10 | Maumee Collieries Company | Improvements in or relating to the blasting of ore, rock, overburden and the like |
| KR20010025538A (en) * | 2001-01-03 | 2001-04-06 | 홍성영 | controlled blasting method with charge holders |
| CN101328809A (en) * | 2008-06-25 | 2008-12-24 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Non-bottom pillar deep hole falling-back type mining method |
| CN101936689A (en) * | 2010-08-30 | 2011-01-05 | 中铁十九局集团第五工程有限公司 | Vibration isolation charging blasthole and charging method |
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| CN206670477U (en) * | 2017-01-13 | 2017-11-24 | 贵州大学 | The axially demolition set of laddering secondary efficiently demolition set |
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2019
- 2019-01-18 CN CN201910048488.8A patent/CN109708547A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2487317A (en) * | 1945-02-09 | 1949-11-08 | Ici Ltd | Explosive cartridge for plaster shooting |
| US2703528A (en) * | 1953-11-05 | 1955-03-08 | Maumee Collieries Company | Blasting process |
| GB778760A (en) * | 1955-01-26 | 1957-07-10 | Maumee Collieries Company | Improvements in or relating to the blasting of ore, rock, overburden and the like |
| KR20010025538A (en) * | 2001-01-03 | 2001-04-06 | 홍성영 | controlled blasting method with charge holders |
| CN101328809A (en) * | 2008-06-25 | 2008-12-24 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Non-bottom pillar deep hole falling-back type mining method |
| CN101936689A (en) * | 2010-08-30 | 2011-01-05 | 中铁十九局集团第五工程有限公司 | Vibration isolation charging blasthole and charging method |
| CN102980452A (en) * | 2012-11-23 | 2013-03-20 | 武汉大学 | De-noising and dust removal blast hole stemming method for drilling blasting of earth and stone in urban and rural areas |
| CN206670477U (en) * | 2017-01-13 | 2017-11-24 | 贵州大学 | The axially demolition set of laddering secondary efficiently demolition set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110823030A (en) * | 2019-10-23 | 2020-02-21 | 包头钢铁（集团）有限责任公司 | Method for protecting rear rock mass by large-scale blasting of strip mine |
| RU2784839C1 (en) * | 2022-04-29 | 2022-11-30 | Владимир Арнольдович Белин | Method for carrying out explosive operations in the circuit zone of quarry |
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