CN109631698A - A kind of space interval charge explosion method reducing boulder yield - Google Patents
A kind of space interval charge explosion method reducing boulder yield Download PDFInfo
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- CN109631698A CN109631698A CN201811329114.5A CN201811329114A CN109631698A CN 109631698 A CN109631698 A CN 109631698A CN 201811329114 A CN201811329114 A CN 201811329114A CN 109631698 A CN109631698 A CN 109631698A
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- airspace
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004880 explosion Methods 0.000 title claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 25
- 238000005422 blasting Methods 0.000 claims abstract description 19
- 230000000903 blocking effect Effects 0.000 claims abstract description 15
- 239000002360 explosive Substances 0.000 claims abstract description 14
- 238000012856 packing Methods 0.000 claims abstract description 3
- 239000000839 emulsion Substances 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 6
- 239000003814 drug Substances 0.000 claims description 4
- 229940079593 drug Drugs 0.000 claims description 2
- 102000016938 Catalase Human genes 0.000 abstract description 3
- 108010053835 Catalase Proteins 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of space interval charge explosion methods for reducing boulder yield, including Nonel detonator, primacord and charge constitution, it is characterised in that: charge constitution is divided into blocking section, top powder charge section, airspace section and base charge section；One end of Nonel detonator is connect with primacord, and the other end extends to outside through top powder charge section and blocking section；Primacord is arranged in the inner cavity of top powder charge section, airspace section and base charge section；Packing is followed successively by blocking section, top powder charge section, airspace section and base charge section from top to bottom inside charge constitution.The blasting method is improved shot elevation using airspace, further improves the catalase quality on step top.It, which is a major advantage that, does not change explosive payload, does not increase explosive cost.
Description
Technical field
The present invention relates to engineering explosion technical field, in particular to a kind of space interval charge explosion side for reducing boulder yield
Method.
Background technique
In hole Blasting In Open-pit Mines, rock fragmentation is one of most important blasting indexes, the excessively high direct shadow of rock boulder yield
It rings subsequent shovel and fills efficiency, increase second-time breakage cost, how to control quick-fried quarrel lumpiness, reduce boulder yield, could not find so far
Effect method becomes one of urgent problem to be solved in engineering explosion.
The fragmentation quality of step top ore-rock is poor, this is also that surface mine boulder yield in production resettlement is higher main
One of reason.
Summary of the invention
In order to solve to possess a large amount of trial for reduction boulder yield at present, the present invention mainly utilizes airspace by powder charge
Height improves, and further improves the catalase quality on step top.It, which is a major advantage that, does not change explosive payload, does not increase fried
Medicine cost.
To achieve the above object, the invention provides the following technical scheme: a kind of space interval powder charge for reducing boulder yield is quick-fried
Broken method, including Nonel detonator, primacord and charge constitution, charge constitution are divided between blocking section, top powder charge section, air
Compartment and base charge section；One end of Nonel detonator is connect with primacord, and the other end is through top powder charge section and blocking Duan Yan
Extend to outside；Primacord is arranged in the inner cavity of top powder charge section, airspace section and base charge section；Charge constitution inner part
Dress is followed successively by blocking section, top powder charge section, airspace section and base charge section from top to bottom.
Preferably, the length for blocking section is 3.5m；The length of top powder charge section and airspace section is 1.5m；Bottom dress
The length of medicine section is 6.5m.
Another technical problem to be solved by the present invention is that a kind of space interval charge explosion method for reducing boulder yield is provided,
Include the following steps:
Step 1): according to rock Protodyakonov coefficient determine blast hole away from, array pitch, minimum burden and explosive specific charge；
Step 2): being designed to single hole charge constitution for charge constitution, using underground borehole blasting, base charge section 6.5m,
Top powder charge section 1.5m, airspace section 1.5m, blocks section 3.5m；Air space length and top loaded length are equal, use
On-site mixed emulsion, the linear charging density of the mixed loading emulsion explosive are 22kg/m；
Step 3): step 2) borehole blasting designs 20 blastholes altogether, and 4m Nonel detonator is tied up on primacord, uses outside hole
Four-way connects into multibranch network, is excited and is detonated with electric cap；
Step 4): connecting blasting circuit for above-mentioned steps, detonate using between row, primacord in hole.
Compared with prior art, the beneficial effects of the present invention are:
The space interval charge explosion method of reduction boulder yield of the invention, is improved shot elevation using airspace,
The catalase quality for further improving step top, does not change explosive payload, does not increase explosive cost；It is tried by mining area explosion
It tests, the bulk after quick-fried is counted using the method manually counted, need to be handled by counting on by totally 8 pieces of bulk, average external volume
5.5m3, boulder yield drop to 0.67% from the 2.2% of conventional blasting method, and lumpiness is more uniform after explosion, to dig fortune work almost without
It influences.
Detailed description of the invention
Fig. 1 is underground borehole blasting schematic diagram of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of space interval charge explosion method for reducing boulder yield, including Nonel detonator, primacord
And charge constitution, charge constitution are divided into blocking section, top powder charge section, airspace section and base charge section；Nonel detonator
One end connect with primacord, the other end through top powder charge section and blocking section extends to outside；Primacord setting fills on top
In the inner cavity of medicine section, airspace section and base charge section；Packing is followed successively by blocking section, top from top to bottom inside charge constitution
Powder charge section, airspace section and base charge section.
As further technical solution of the present invention: the length for blocking section is 3.5m；Top powder charge section and airspace section
Length be 1.5m；The length of base charge section is 6.5m.
Another technical problem to be solved by the present invention is that a kind of space interval charge explosion method for reducing boulder yield is provided,
Include the following steps:
Step 1): according to rock Protodyakonov coefficient determine blast hole away from, array pitch, minimum burden and explosive specific charge；
Step 2): being designed to single hole charge constitution for charge constitution, using underground borehole blasting, base charge section 6.5m,
Top powder charge section 1.5m, airspace section 1.5m, blocks section 3.5m；Air space length and top loaded length are equal, use
On-site mixed emulsion, the linear charging density of the mixed loading emulsion explosive are 22kg/m；
Step 3): step 2) borehole blasting designs 20 blastholes altogether, and 4m Nonel detonator is tied up on primacord, uses outside hole
Four-way connects into multibranch network, is excited and is detonated with electric cap；
Step 4): connecting blasting circuit for above-mentioned steps, detonate using between row, primacord in hole.
Embodiment 1:
Certain mining area explosion is vertically perforated using diameter of phi 150mm down-the-hole drill, quincunx cloth hole, average hole depth 13.1m, is surpassed
Deep 1.5m, Optimization of spacing pattern parameters are 7m × 4m, toe burden 6m, 2~3m of upper disk burden, using underground borehole blasting, bottom
Portion's powder charge 6.5m, top powder charge 1.5m, airspace 1.5m block 3.6m, see Fig. 1.Use site the mixed loading emulsion explosive, loads in mixture
The linear charging density of emulsion is 22kg/m, which designs 20 blastholes altogether, is detonated (hybrid network) using between row, hole
4m Nonel detonator is tied up on primacord, connects into multibranch network using four-way outside hole, excited with electric cap by interior primacord
It is quick-fried.
In explosion, after the completion of perforator makees, drilling is checked and accepted, blasting parameter is shown in Table 1
Continued 1
By scene inspection and measurement, quick-fried heap preshoot 13m after explosion, 3~4m of backlash, quick-fried heap be higher by step surface about 2~
3m adopts noresidue foundation after the completion of dress.The bulk after quick-fried is counted by the method that manually counts, count on need to handle it is big
Totally 8 pieces of block, average external volume 5.5m3, boulder yield drops to 0.67% from the 2.2% of conventional blasting method, and lumpiness is more uniform after explosion, right
Fortune work is dug to have little effect.If 19,000,000 m of overburden amount per year3, young generation bulk 290700m3, second-time breakage is by market
The every 15 yuan/m of side of valence3It calculates, then annual 4360500 yuan of direct saving second-time breakage expense.It is adjusted to from 6m × 4m of conventional blasting method
7m × 4m, 0.60kg/m of the powder factor from conventional blasting method3It is down to 0.54kg/m3, year explosive cost can save
7752000 yuan, save about 2714000 yuan of cost of drilling.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (3)
1. a kind of space interval charge explosion method for reducing boulder yield, including Nonel detonator, primacord and charge constitution,
It is characterized by: charge constitution is divided into blocking section, top powder charge section, airspace section and base charge section；Nonel detonator
One end is connect with primacord, and the other end extends to outside through top powder charge section and blocking section；Primacord is arranged in top powder charge
In the inner cavity of section, airspace section and base charge section；Packing is followed successively by blocking section, top dress from top to bottom inside charge constitution
Medicine section, airspace section and base charge section.
2. a kind of space interval charge explosion method for reducing boulder yield according to claim 1, it is characterised in that: blocking
The length of section is 3.5m；The length of top powder charge section and airspace section is 1.5m；The length of base charge section is 6.5m.
3. a kind of space interval charge explosion method according to claim 1 for reducing boulder yield, which is characterized in that including
Following steps:
Step 1): according to rock Protodyakonov coefficient determine blast hole away from, array pitch, minimum burden and explosive specific charge；
Step 2): being designed to single hole charge constitution for charge constitution, using underground borehole blasting, base charge section 6.5m, top
Powder charge section 1.5m, airspace section 1.5m, blocks section 3.5m；Air space length and top loaded length are equal, use site
The mixed loading emulsion explosive, the linear charging density of the mixed loading emulsion explosive are 22kg/m；
Step 3): step 2) borehole blasting designs 20 blastholes altogether, and 4m Nonel detonator is tied up on primacord, four-way is used outside hole
Multibranch network is connected into, is excited and is detonated with electric cap；
Step 4): connecting blasting circuit for above-mentioned steps, detonate using between row, primacord in hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811329114.5A CN109631698A (en) | 2018-11-09 | 2018-11-09 | A kind of space interval charge explosion method reducing boulder yield |
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| CN201811329114.5A CN109631698A (en) | 2018-11-09 | 2018-11-09 | A kind of space interval charge explosion method reducing boulder yield |
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| CN109631698A true CN109631698A (en) | 2019-04-16 |
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| CN201811329114.5A Pending CN109631698A (en) | 2018-11-09 | 2018-11-09 | A kind of space interval charge explosion method reducing boulder yield |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274526A (en) * | 2019-06-04 | 2019-09-24 | 中交路桥建设有限公司 | A kind of soft rock engineering method for excavating and blasting |
| CN110500926A (en) * | 2019-09-17 | 2019-11-26 | 安徽马钢矿业资源集团有限公司 | A kind of deep hole blasting spaced loading method |
| CN110579145A (en) * | 2019-09-20 | 2019-12-17 | 鞍钢集团矿业有限公司 | Charging method for blasting of sector hole of underground mine |
| CN110729662A (en) * | 2019-09-16 | 2020-01-24 | 国网山西省电力公司经济技术研究院 | Segmented blasting deicing method for overhead transmission line |
| CN110806155A (en) * | 2019-10-18 | 2020-02-18 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for optimizing explosive distribution |
| CN114111483A (en) * | 2021-11-30 | 2022-03-01 | 广州铁路投资建设集团有限公司 | Can reduce demolition unit of deep basal pit stone square blasting bold rate |
Citations (5)
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|---|---|---|---|---|
| JPH1193559A (en) * | 1997-09-17 | 1999-04-06 | Donsuu Shimu | Bedrock cutting method utilizing tensile breakage |
| US7950328B2 (en) * | 2006-12-07 | 2011-05-31 | Dave Howerton | Blast hole liner |
| CN202255143U (en) * | 2011-09-28 | 2012-05-30 | 内蒙古生力中伟爆破集团有限公司 | Spaced loading structure of blasthole |
| CN105444633A (en) * | 2015-11-18 | 2016-03-30 | 西北矿冶研究院 | Bench blasting charge structure capable of reducing block rate of blast hole blocking section |
| CN107957222A (en) * | 2017-11-28 | 2018-04-24 | 武汉大学 | Reduce blasthole spaced loading and the method for ignition of methods of blasting toes in open generation rate |
-
2018
- 2018-11-09 CN CN201811329114.5A patent/CN109631698A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1193559A (en) * | 1997-09-17 | 1999-04-06 | Donsuu Shimu | Bedrock cutting method utilizing tensile breakage |
| US7950328B2 (en) * | 2006-12-07 | 2011-05-31 | Dave Howerton | Blast hole liner |
| CN202255143U (en) * | 2011-09-28 | 2012-05-30 | 内蒙古生力中伟爆破集团有限公司 | Spaced loading structure of blasthole |
| CN105444633A (en) * | 2015-11-18 | 2016-03-30 | 西北矿冶研究院 | Bench blasting charge structure capable of reducing block rate of blast hole blocking section |
| CN107957222A (en) * | 2017-11-28 | 2018-04-24 | 武汉大学 | Reduce blasthole spaced loading and the method for ignition of methods of blasting toes in open generation rate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274526A (en) * | 2019-06-04 | 2019-09-24 | 中交路桥建设有限公司 | A kind of soft rock engineering method for excavating and blasting |
| CN110729662A (en) * | 2019-09-16 | 2020-01-24 | 国网山西省电力公司经济技术研究院 | Segmented blasting deicing method for overhead transmission line |
| CN110500926A (en) * | 2019-09-17 | 2019-11-26 | 安徽马钢矿业资源集团有限公司 | A kind of deep hole blasting spaced loading method |
| CN110579145A (en) * | 2019-09-20 | 2019-12-17 | 鞍钢集团矿业有限公司 | Charging method for blasting of sector hole of underground mine |
| CN110806155A (en) * | 2019-10-18 | 2020-02-18 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for optimizing explosive distribution |
| CN114111483A (en) * | 2021-11-30 | 2022-03-01 | 广州铁路投资建设集团有限公司 | Can reduce demolition unit of deep basal pit stone square blasting bold rate |
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Application publication date: 20190416 |