CN108801087A - A kind of side slope pre split blasting method - Google Patents
A kind of side slope pre split blasting method Download PDFInfo
- Publication number
- CN108801087A CN108801087A CN201810427893.6A CN201810427893A CN108801087A CN 108801087 A CN108801087 A CN 108801087A CN 201810427893 A CN201810427893 A CN 201810427893A CN 108801087 A CN108801087 A CN 108801087A
- Authority
- CN
- China
- Prior art keywords
- blasthole
- side slope
- row
- ranked
- equidistant
- 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.)
- Pending
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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
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present invention relates to a kind of side slope pre split blasting methods, and this approach includes the following steps：（1）, rock drilling parameter：Equidistant first blasthole of a row is arranged on the side slope line for wanting explosion, the center line of first blasthole tilts backwards certain angle, equidistant second blasthole of a row is offered in the front side certain distance of the first blasthole, second blasthole is straight down, two, which are offered, in the front side certain distance of the second blasthole ranked third blasthole, spacing distance between the third blasthole of same row is equal, and two ranked third blasthole mutual dislocation arrangement, and third blasthole is straight down；（3）, design of firing circuit：One hair Nonel detonator of filling and the dual ignition charge of primacord, scold me to load two hairs with section Nonel detonator ignition charge, the first blasthole in third blasthole in the first blasthole and the second blasthole.The present invention can be effectively protected destruction of the explosion to retaining rock, and presplit blasting successful implementation is significant to stablizing for end of a period side slope.
Description
Technical field
The invention belongs to ore extraction fields, and in particular to a kind of method of side slope pre split explosion.
Background technology
With opencast progress, more and more glory-holes are recessed outdoor from the outdoor depth that is transferred in hillside, and with
The increase of mining depth and side slope plus steep, underground water is also more and more, and the earthquake sheet generated in blasting process is also to excavating
The stability influence of side slope is increasing.Therefore, Controlled blasting technique has important practical significance under high gradient slope, obtains
The most attention of each developed country.
In order to ensure the stability of surface mine boundary side slope, ensure that mining safety, the side slope of surface mine are general
For 65 degree or so of slope.During slope construction, needs to use blasting method, but use conventional method explosion, explosion
Vibrations can cause side slope wall rock loosening, and side slope country rock is made to generate crack or backbreak, and the later stage also needs to be returned with the rubble loosened
It fills out, grade of side slope is made to reach design requirement.Such construction method causes the globality of side slope to be destroyed, and stability is poor,
There is some potential safety problems, is especially encountering heavy rain or flood happens occasionally and mud-rock flow and collapses, it is therefore necessary to existing
Slope construction be improved.
Invention content
The purpose of the present invention is to provide a kind of side slope pre split blasting methods.The present invention can be effectively protected explosion to pre-
Stay the destruction of rock mass, presplit blasting successful implementation significant to stablizing for end of a period side slope.
The technical solution adopted by the present invention：A kind of side slope pre split blasting method, this approach includes the following steps：（1）, rock drilling
Parameter：Arrange that equidistant first blasthole of a row, the center line of first blasthole tilt backwards on the side slope line for wanting explosion
Certain angle offers equidistant second blasthole of a row in the front side certain distance of the first blasthole, the second blasthole straight down,
Two, which are offered, in the front side certain distance of the second blasthole ranked third blasthole, the spacing distance between the third blasthole of same row is equal,
And two ranked third blasthole mutual dislocation arrangement, third blasthole is straight down；（3）, design of firing circuit：In the first blasthole and second
One hair Nonel detonator of filling and the dual ignition charge of primacord, scold me to load two hairs with section detonator in third blasthole in blasthole
Cap sensitive explosive, the detonator in the first blasthole, the second blasthole and third blasthole are coupled by three sections of Millisecond Nonel Tube Detonators works
Element finally excites NONEL demolition network with initiator.
Advantage is the present invention compared with prior art：The present invention by rock drilling parameter designing, blasting parameter design,
The sport technique segments such as charge constitution and filling design, design of firing circuit, have summed up the ginseng of the presplit blasting suitable for this mine
Number.The stabilization that ensure that open mine side slope provides reference for the side slope pre split explosion of similar mines.
Description of the drawings
Fig. 1 is blasthole position vertical view in the present invention；
Fig. 2 is the cross section structure schematic diagram of Fig. 1.
Specific implementation mode
As shown in Figure 1, a kind of side slope pre split blasting method, this approach includes the following steps：（1）, rock drilling parameter：Wanting quick-fried
Arrange that equidistant first blasthole 1 of a row, the center line of first blasthole 1 tilt backwards certain angle on broken side slope line,
Offer equidistant second blasthole 2 of a row in the front side certain distance of the first blasthole 1, the second blasthole 2 straight down, second
The front side certain distance of blasthole 2 offers two and ranked third blasthole 3, and the spacing distance between the third blasthole 3 of same row is equal, and two
3 mutual dislocation of blasthole arrangement is ranked third, third blasthole 3 is straight down；（3）, design of firing circuit：In the first blasthole 1 and second
One hair Nonel detonator of filling and the dual ignition charge of primacord in blasthole 2, third blasthole 3 scold I load two hairs lead with section it is quick-fried
Pipe cap sensitive explosive, the detonator in the first blasthole 1, the second blasthole 2 and third blasthole 3 are made by three sections of Millisecond Nonel Tube Detonators
Coupling element finally excites NONEL demolition network with initiator.
Claims (1)
1. a kind of side slope pre split blasting method, it is characterised in that this approach includes the following steps：（1）, rock drilling parameter：Wanting explosion
Side slope line on arrange that equidistant first blasthole of a row, the center line of first blasthole tilt backwards certain angle,
The front side certain distance of one blasthole offers equidistant second blasthole of a row, the second blasthole straight down, in the second blasthole
Front side certain distance offers two and ranked third blasthole, and the spacing distance between the third blasthole of same row is equal, and two ranked third big gun
Hole mutual dislocation arrangement, third blasthole is straight down；（3）, design of firing circuit：One is loaded in the first blasthole and the second blasthole
Nonel detonator and the dual ignition charge of primacord are sent out, scold me to load two hairs and ignited with section Nonel detonator in third blasthole and fries
Medicine, the detonator in the first blasthole, the second blasthole and third blasthole are made coupling element by three sections of Millisecond Nonel Tube Detonators, are finally used
Initiator excites NONEL demolition network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810427893.6A CN108801087A (en) | 2018-05-07 | 2018-05-07 | A kind of side slope pre split blasting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810427893.6A CN108801087A (en) | 2018-05-07 | 2018-05-07 | A kind of side slope pre split blasting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108801087A true CN108801087A (en) | 2018-11-13 |
Family
ID=64092032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810427893.6A Pending CN108801087A (en) | 2018-05-07 | 2018-05-07 | A kind of side slope pre split blasting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108801087A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648898A (en) * | 2020-12-18 | 2021-04-13 | 本钢板材股份有限公司 | Pre-splitting blasting method for radial uncoupled axial continuous charging |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519324A (en) * | 2011-12-27 | 2012-06-27 | 武汉科技大学 | Presplitting blasting method for water holes close to high and steep slopes |
| CN105466290A (en) * | 2015-11-03 | 2016-04-06 | 武汉科技大学 | Cutting excavation blasting method |
| CN205825826U (en) * | 2016-07-21 | 2016-12-21 | 河北钢铁集团矿业有限公司 | A kind of mine slope presplit blasting big gun pore structure |
-
2018
- 2018-05-07 CN CN201810427893.6A patent/CN108801087A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519324A (en) * | 2011-12-27 | 2012-06-27 | 武汉科技大学 | Presplitting blasting method for water holes close to high and steep slopes |
| CN105466290A (en) * | 2015-11-03 | 2016-04-06 | 武汉科技大学 | Cutting excavation blasting method |
| CN205825826U (en) * | 2016-07-21 | 2016-12-21 | 河北钢铁集团矿业有限公司 | A kind of mine slope presplit blasting big gun pore structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112648898A (en) * | 2020-12-18 | 2021-04-13 | 本钢板材股份有限公司 | Pre-splitting blasting method for radial uncoupled axial continuous charging |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181113 |
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| WD01 | Invention patent application deemed withdrawn after publication |