CN108592716A - A kind of method of underground stope fining blasting excavation - Google Patents
A kind of method of underground stope fining blasting excavation Download PDFInfo
- Publication number
- CN108592716A CN108592716A CN201810271699.3A CN201810271699A CN108592716A CN 108592716 A CN108592716 A CN 108592716A CN 201810271699 A CN201810271699 A CN 201810271699A CN 108592716 A CN108592716 A CN 108592716A
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- China
- Prior art keywords
- blasting
- hole
- explosive
- stope
- fining
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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
A kind of method of underground stope fining blasting excavation, is related to mineral products acquisition technique field, it is characterised in that：Including following operating procedure, mining mode, design blasting method are established, blasting parameter is established, blasting circuit connection, determines dynamite charge requirement.The method of the present invention is reasonable, easy to operate, explosion is simple.
Description
Technical field
The present invention relates to mineral products acquisition technique fields, and in particular to a kind of method of underground stope fining blasting excavation.
Background technology
Preceding persistently plummeting due to iron ore price, domestic iron ore enterprise development face a severe challenge, resources supplIes
Change official post exploitation difficulty increase, socio-economic development also proposes mine development new requirement.Therefore, industry is coped with
It the variation of situation and keeps abreast of the times, it is necessary to constantly research and develop mining technique, pass through the application and technological transformation etc. of new technology
Measure carrys out cost efficiency, improves enterprise competitiveness.
Zhang village mine now uses vertical long hole block chambering method to carry out back production, and a step is dug up mine, and room is 15 meters wide, and two steps mining room is wide
18 meters.Each mineral building must tunnel 2~3 drilling chambers, and drilling chamber driving amount plane projection area accounts for rooming area
85%, chamber driving amount is big, long construction period, and production cost is high.
And Zhang village mine now uses vertical long hole block chambering method to carry out explosion back production, and YGZ90 drilling machines are used in by mine lane
On to chisel diameter 65mm medium-length holes, dig moat ditch, undercut 15 meters high, drilling chamber uses T150 down-the-hole drills chisel diameter 165mm
It is lower to parallel deep hole, 45 meters of hole depth.Drilling chamber driving amount plane projection area accounts for the 85% of rooming area, under vertical
It is 40 meters to the practical machine-team drilling amount of the used down-the-hole drill of parallel deep hole, is pushed up in hammer drill relative to SimbaH1254
140 meters of speed of deep hole machine-team are slow, and rock penetration performance is low.
Invention content
Technical problem to be solved by the present invention lies in overcoming existing technological deficiency to provide, a kind of method is reasonable, operates
Simply a kind of method of underground stope fining blasting excavation of convenient, explosion.
The technical problems to be solved by the invention are realized using technical solution below：
A kind of method of underground stope fining blasting excavation, it is characterised in that：Including following operating procedure,
Step 1: establishing mining mode：Mining methods mainly use Small-deep Hole stage open stope afterwards filling to dig up mine
Method, using T-150 down-the-hole drilling trolleys, the downward Drilling vertical long hole in stope drilling chamber, blasthole diameter Φ 45-55mm,
Big gun depth 55-65mm, array pitch 1.3-1.7m, bottom hole pitch 1.4-1.9m；
Step 2: design blasting method：
Using linear type test explosion, blasthole is filled up into explosive, then carries out direct explosion；
Step 3: establishing blasting parameter：
Theoretical, the minimum burden formula according to livingston explosive funnelAnd empirical equation W=25-
30d calculates；
Step 4: blasting circuit connects：
Using high-precision high strength detonating tube detonator " hole-specifically " initiation net, with arranging adjacent shot hole interval 25ms, between row between
Every 41ms, oblique interval 17ms, time isopleth tends towards stability；
Step 5: determining dynamite charge requirement：
Detonation tool is passed by adding minor diameter emulsifying medicine to roll into detonation shell case by detonation tool placement location control detonation wave
Broadcast direction；
The explosive of the explosion using emulsification ammonium oil, ammonium oil, finished emulsion explosives, one kind in bulk emulsifying explosive or
It is several；
When the use emulsification ammonium oil, ammonium oil, finished emulsion explosives, bulk emulsifying explosive composite explosives, emulsification ammonium oil,
Ammonium oil, finished emulsion explosives, bulk emulsifying explosive mass ratio be 1：1.4：0.7：1.1.
Beneficial effects of the present invention are：
1, drilling chamber excavation work amount 80% is reduced；
2, capacity utilization rationally is improved using existing rock drilling equipment, improves overall rock penetration performance；
3, Blasting Parameters Optimization rationally adjusts explosive distribution density, reduces explosive specific charge；
4, driling explosion data are collected, driling explosion back production experience is accumulated；
5,100 meters of calculating are grown with mineral building, a panel development heading designed more originally saves 19200m3, average each
Stope saves 3840m3, saves chamber excavation work amount 80% compared to vertical parallel hole rock drilling of constructing, new mining technology is opposite to be subtracted
680,000 yuan few/single stope, a panel saves 3,400,000 yuan；
6, only it is explosive raw material or semi-finished product before emulsified bases is packed into blasthole, no cap-sensitivity belongs to 5.1 grades of oxygen
Agent reduces the security risk during transport, storage, use；
7, the explosive character of on-site mixed preparation is stable, it can be achieved that mechanization continuous charging operation, with existing operating type
It compares, site operation personnel and activity duration can be reduced, send automatically and move back pipe and can reduce labor intensity, more stopes cycles can be completed
Operation meets efficient construction requirement.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, below
The present invention is further explained.
Embodiment
A kind of method of underground stope fining blasting excavation, it is characterised in that：Including following operating procedure,
Step 1: establishing mining mode：Mining methods mainly use Small-deep Hole stage open stope afterwards filling to dig up mine
Method, using T-150 down-the-hole drilling trolleys, the downward Drilling vertical long hole in stope drilling chamber, blasthole diameter Φ 45-55mm,
Big gun depth 55-65mm, array pitch 1.3-1.7m, bottom hole pitch 1.4-1.9m；
Step 2: design blasting method：
Using linear type test explosion, blasthole is filled up into explosive, then carries out direct explosion；
Step 3: establishing blasting parameter：
Theoretical, the minimum burden formula according to livingston explosive funnelAnd empirical equation W=25-
30d calculates；
Step 4: blasting circuit connects：
Using high-precision high strength detonating tube detonator " hole-specifically " initiation net, with arranging adjacent shot hole interval 25ms, between row between
Every 41ms, oblique interval 17ms, time isopleth tends towards stability；
Step 5: determining dynamite charge requirement：
Detonation tool is passed by adding minor diameter emulsifying medicine to roll into detonation shell case by detonation tool placement location control detonation wave
Broadcast direction；
The explosive of the explosion using emulsification ammonium oil, ammonium oil, finished emulsion explosives, one kind in bulk emulsifying explosive or
It is several；
When the use emulsification ammonium oil, ammonium oil, finished emulsion explosives, bulk emulsifying explosive composite explosives, emulsification ammonium oil,
Ammonium oil, finished emulsion explosives, bulk emulsifying explosive mass ratio be 1：1.4：0.7：1.1.
Attribute and content such as the following table 1 of explosive used by charge explosion：
Table 1
Explosion is 5300 and 5700m/s；
Iron ore hardness is high, and wave impedance is big, preferentially selects three high explosives in principle；It is in bulk in common explosive type above
Emulsifiability, it is economical preferably；
The combination rock property that blasting parameter is calculated determines each blasting parameter such as the following table 2：
Table 2
High-precision high intensity detonator delay selection of time such as the following table 3：
Table 3
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, this
A little changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by the attached claims
Book and its equivalent thereof.
Claims (2)
1. a kind of method of underground stope fining blasting excavation, it is characterised in that：Including following operating procedure,
Step 1: establishing mining mode：Mining methods mainly use Small-deep Hole stage open stope afterwards filling mining method, use
T-150 down-the-hole drilling trolleys, downward Drilling vertical long hole, blasthole diameter Φ 45-55mm, big gun depth 55- in stope drilling chamber
65mm, array pitch 1.3-1.7m, bottom hole pitch 1.4-1.9m；
Step 2: design blasting method：
Using linear type test explosion, blasthole is filled up into explosive, then carries out direct explosion；
Step 3: establishing blasting parameter：
Theoretical, the minimum burden formula according to livingston explosive funnelAnd empirical equation W=25-30d is surveyed
It calculates；
Step 4: blasting circuit connects：
Using high-precision high strength detonating tube detonator " hole-specifically " initiation net, with row adjacent shot hole interval 25ms, spacing between rows
41ms, oblique interval 17ms, time isopleth tend towards stability；
Step 5: determining dynamite charge requirement：
Detonation tool in detonation shell case by adding minor diameter emulsifying medicine to roll into, by detonation tool placement location control detonation wave propagation side
To.
2. a kind of method of underground stope fining blasting excavation according to claim 1, it is characterised in that：The explosion
Explosive using one or more of emulsification ammonium oil, ammonium oil, finished emulsion explosives, bulk emulsifying explosive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271699.3A CN108592716A (en) | 2018-03-29 | 2018-03-29 | A kind of method of underground stope fining blasting excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810271699.3A CN108592716A (en) | 2018-03-29 | 2018-03-29 | A kind of method of underground stope fining blasting excavation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108592716A true CN108592716A (en) | 2018-09-28 |
Family
ID=63623921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810271699.3A Pending CN108592716A (en) | 2018-03-29 | 2018-03-29 | A kind of method of underground stope fining blasting excavation |
Country Status (1)
| Country | Link |
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| CN (1) | CN108592716A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332866A (en) * | 2019-07-09 | 2019-10-15 | 中南大学 | Single free-face combines blasthole kerf blasting method |
| CN113108657A (en) * | 2021-04-20 | 2021-07-13 | 白银有色集团股份有限公司 | Metal mine medium-length hole blasting parameter optimization |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105129A (en) * | 2007-07-16 | 2008-01-16 | 中南大学 | Mining environment reconstructed continuous mining afterwards filling mining method |
| CN106677780A (en) * | 2017-02-21 | 2017-05-17 | 中冶北方（大连）工程技术有限公司 | Upward and downward staged rock drilling, sublevel bottom cutting and ore removal subsequent backfilling mining method |
-
2018
- 2018-03-29 CN CN201810271699.3A patent/CN108592716A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105129A (en) * | 2007-07-16 | 2008-01-16 | 中南大学 | Mining environment reconstructed continuous mining afterwards filling mining method |
| CN106677780A (en) * | 2017-02-21 | 2017-05-17 | 中冶北方（大连）工程技术有限公司 | Upward and downward staged rock drilling, sublevel bottom cutting and ore removal subsequent backfilling mining method |
Non-Patent Citations (1)
| Title |
|---|
| 汤永平等: "大直径深孔侧向崩矿技术在柴山矿的应用", 《化工矿物与加工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110332866A (en) * | 2019-07-09 | 2019-10-15 | 中南大学 | Single free-face combines blasthole kerf blasting method |
| CN113108657A (en) * | 2021-04-20 | 2021-07-13 | 白银有色集团股份有限公司 | Metal mine medium-length hole blasting parameter optimization |
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Application publication date: 20180928 |