CN108195243A - A kind of high multiple rows of high bunch continuous method method of big section - Google Patents
A kind of high multiple rows of high bunch continuous method method of big section Download PDFInfo
- Publication number
- CN108195243A CN108195243A CN201810198069.8A CN201810198069A CN108195243A CN 108195243 A CN108195243 A CN 108195243A CN 201810198069 A CN201810198069 A CN 201810198069A CN 108195243 A CN108195243 A CN 108195243A
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- China
- Prior art keywords
- hole
- blasting
- row
- explosive
- rock
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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 invention discloses a kind of high multiple rows of high bunch continuous method methods of big section, blasthole uses vertical long hole, explosive is in the principle cloth hole for treating mean allocation in quick-fried rock mass, the pattern is rectangle pattern, and by being determined to blasting parameter, the filling structure of explosive is designed, it is chosen in a manner that porous point is arranged hole in vertical plane, partial center point is chosen as fire point, between adjacent holes and hole, elementary errors sequence blasting is taken in hole between row and row.The advantageous scope of freedom is created in the follow-up ore body rock blasting of beneficial effects of the present invention, reduces the clamping action of rock；After rock crushing in the motion process of sillar, it is mutually collided between sillar, attrition generates surge and shearing force causes crushing again for sillar, reduce the blasting method of sillar block diameter, it can improve by quick-fried rock crushing degree, concussion of blasting effect is reduced, the harm to above ground structure is reduced, maintains mine safety.
Description
Technical field
The invention belongs to mining blasting technical fields, and in particular to a kind of high multiple rows of high bunch continuous method method of big section.
Technical background
In the production process of iron ore, we often fall ore deposit using explosion the methods of medium-length hole, deep hole, and in this way
The ore deposit that explosion generates, block large volume is big, can cause to generate bulk deposition in mineral building, blocks discharging tunnel, while need in the later stage
It puts into a large amount of manpower, priming system etc. and carries out secondary blasting processing, it is serious to restrict production, increase the peace of production cost and explosion
Full hidden danger, and the blasting vibration effect that explosion generates is big, influences the safety in production in mine, therefore, is not increasing explosive specific charge
Under the premise of how to reduce boulder yield to greatest extent as iron ore technical barrier urgently to be resolved hurrily.
Invention content
The advantageous scope of freedom is created for follow-up ore body rock blasting the purpose of the present invention is to provide one kind, reduces the folder of rock
It makes and uses；Meanwhile mutually collided between sillar in the motion process of sillar after rock crushing, attrition generates surge and cuts
Shear force causes crushing again for sillar, reduces the blasting method of sillar block diameter, can improve by quick-fried rock crushing degree, reduce
Concussion of blasting effect, reduces the harm to above ground structure, maintains mine safety.
The present invention takes following technical solution：
A kind of high multiple rows of high bunch continuous method method of big section, blasthole use vertical long hole, and explosive is being treated in quick-fried rock mass averagely
The principle cloth hole of distribution, the pattern is rectangle pattern, by being determined to blasting parameter, the filling structure of explosive
It is designed, the filling structure of the explosive is clogged by fine sand, is rock expanded ammonium nitrate explosive, thin to be followed successively by from outside to inside
Sand filling etc., accepts finally by pallet, igniting primer, the detonation is equipped in the innermost layer rock expanded ammonium nitrate explosive
Pack is connected to outside by fuse cord；It is chosen in a manner that porous point is arranged hole in vertical plane, chooses partial center point conduct
Fire point, between adjacent holes and hole, elementary errors sequence blasting is taken in hole between row and row.
A diameter of 150~the 180mm of vertical hole, delay times of the fire point and same row's adjacent holes for 22~
28ms, the pitch-rows of the fire point and same row's adjacent holes are 2.5~3m, the delay of the adjacent holes of the fire point and same row
Time is 108~113ms, and the adjacent holes pitch-row of the fire point and same row is 2.5~3m.
Rock expanded ammonium nitrate explosive filling 2~2.1m of height of the dynamite charge, fine sand filling height for 0.5~
0.6m, the sealed borehole length are more than 3m.
The explosion blasting circuit connection mode is that series system is used between hole, using diagonal connection side in parallel between row
Formula.
The beneficial effects of the invention are as follows：
(1) the advantageous scope of freedom is created in ore body rock blasting, reduces the clamping action of rock；
(2) it is mutually collided between sillar in the motion process of sillar after rock crushing, attrition generates surge and shearing
Power causes crushing again for sillar, reduces the blasting method of sillar block diameter, can improve by quick-fried rock crushing degree, reduce
Concussion of blasting effect；
(3) boulder yield is significantly reduced using the high multiple rows of high bunch continuous method of big section, reduces secondary blasting processing bulk
Caused security risk and its dust, the harm of noise；
(4) reduce the material consumption of the working hour for handling bulk, blasted material consumption, the input of manpower and mill ring selection section；
(5) the high multiple rows of high bunch continuous method of big section effectively controls maximum single blow blasting charge, reduces concussion of blasting, is conducive to
Safeguard the safety of mine and surrounding enviroment；
(6) second-time breakage during tight-face blasting by quick-fried rock mass, throwing reduce the broken of blasting flyrock away from being restricted
Bad effect, maintained equipment safety.
Description of the drawings
Fig. 1 is Charge Structure on Explosive figure
Fig. 2 is laid with figure more for the high high bunch continuous method networks of clapping of big section
Fig. 3 is detonator delay chart
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
With with limiting the present invention.
A kind of high multiple rows of high bunch continuous method method of big section, when falling ore deposit using vertical long hole, first calculates minimum burden,
The pattern of rectangle, formation hardness f=can be used by explosive in the principle cloth hole for treating mean allocation in quick-fried rock mass, kerve cloth hole
15~20, blasthole diameter 165mm, array pitch 2.7m, array pitch 2.7m, charge constitution load height 2m for rock expanded ammonium nitrate explosive,
The fine sand filling height is 0.5m, then the detailed charge constitution figures of sealed borehole length 3.2m are as shown in Figure 1, carry out explosion net
Road is laid, by taking every 4 holes of row as an example,
Set MS1 as fire point as shown in Figure 2, between fire point MS1 and adjacent MS2 row hole delay time be 25ms, MS2 with
It is 25ms to be separated by delay time between the hole of the MS3 of MS1, MS1 and be 110ms with delay time between the hole of row MS5, MS5 with it is adjacent
Delay time is 25ms between hole, as shown in Figure 3 for detonator delay time.
The explosion blasting circuit connection mode is that series system is used between hole, using diagonal connection side in parallel between row
Formula.
Beneficial effects of the present invention are：
The advantageous scope of freedom is created in ore body rock blasting, reduces the clamping action of rock；
It after rock crushing in the motion process of sillar, is mutually collided between sillar, attrition generates surge and shearing force
Crushing again for sillar is caused, the blasting method of sillar block diameter is reduced, can improve by quick-fried rock crushing degree, reduce quick-fried
Broken shock-effect；
Boulder yield is significantly reduced using the high multiple rows of high bunch continuous method of big section, reduces secondary blasting processing bulk institute band
The security risk come and its dust, the harm of noise；
Reduce the material consumption of the working hour for handling bulk, blasted material consumption, the input of manpower and mill ring selection section；
The big high multiple rows of high bunch continuous method of section effectively controls maximum single blow blasting charge, reduces concussion of blasting, is conducive to tie up
Protect the safety of mine and surrounding enviroment；
The second-time breakage during tight-face blasting by quick-fried rock mass, throwing reduce the destruction of blasting flyrock away from being restricted
Effect, maintained equipment safety.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement done within refreshing and principle etc., are all contained within protection scope of the present invention.
Claims (4)
- A kind of 1. high multiple rows of high bunch continuous method method of big section, which is characterized in that blasthole uses vertical long hole, and explosive is treating quick-fried rock The principle cloth hole of internal mean allocation, the pattern is rectangle pattern, by being determined to blasting parameter, explosive Filling structure is designed, and the filling structure of the explosive is clogged, rock expanded ammonium nitrate to be followed successively by from outside to inside by fine sand Explosive, fine sand filling etc., accept finally by pallet, igniting primer are equipped in the innermost layer rock expanded ammonium nitrate explosive, The igniting primer is connected to outside by fuse cord；It is chosen in a manner that porous point is arranged hole in vertical plane, in choosing partially Heart point is as fire point, and between adjacent holes and hole, elementary errors sequence blasting is taken in hole between row and row.
- 2. the multiple rows of high bunch continuous method method of big section of height according to claim 1, which is characterized in that the vertical hole is straight Diameter is 150~180mm, and delay times of the fire point and same row's adjacent holes is 22~28ms, the fire point with it is same The pitch-row of adjacent holes is arranged as 2.5~3m, the delay time of the adjacent holes of the fire point and same row is 108~113ms, described The adjacent holes pitch-row of fire point and same row is 2.5~3m.
- 3. the multiple rows of high bunch continuous method method of big section of height according to claim 1, which is characterized in that the dynamite charge 2~2.1m of rock expanded ammonium nitrate explosive filling height, the fine sand filling height is 0.5~0.6m, and the sealed borehole length is more than 3m。
- 4. the multiple rows of high bunch continuous method method of big section of height according to claim 1, which is characterized in that the explosion detonation net Road connection mode is that series system is used between hole, using diagonal connection mode in parallel between row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810198069.8A CN108195243A (en) | 2018-03-12 | 2018-03-12 | A kind of high multiple rows of high bunch continuous method method of big section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810198069.8A CN108195243A (en) | 2018-03-12 | 2018-03-12 | A kind of high multiple rows of high bunch continuous method method of big section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108195243A true CN108195243A (en) | 2018-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810198069.8A Pending CN108195243A (en) | 2018-03-12 | 2018-03-12 | A kind of high multiple rows of high bunch continuous method method of big section |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110779409A (en) * | 2019-09-17 | 2020-02-11 | 中国水利水电第四工程局有限公司 | Single-hole double-plug section type blasting method |
| CN111207638A (en) * | 2020-03-20 | 2020-05-29 | 本钢板材股份有限公司 | Deep hole trenching blasting method for strip mine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319862A (en) * | 2007-06-08 | 2008-12-10 | 鞍钢集团矿业公司 | Novel horizontal trenching and vertical deep borehole initiation method for deep concave strip mine |
| CN103389015A (en) * | 2013-08-09 | 2013-11-13 | 贵州新联***工程集团有限公司 | Subsection millisecond differential blasting method in blasthole |
-
2018
- 2018-03-12 CN CN201810198069.8A patent/CN108195243A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319862A (en) * | 2007-06-08 | 2008-12-10 | 鞍钢集团矿业公司 | Novel horizontal trenching and vertical deep borehole initiation method for deep concave strip mine |
| CN103389015A (en) * | 2013-08-09 | 2013-11-13 | 贵州新联***工程集团有限公司 | Subsection millisecond differential blasting method in blasthole |
Non-Patent Citations (1)
| Title |
|---|
| 王正英等: "中厚急倾斜坚硬矿体大段高矿房******优化", 《中国矿业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110779409A (en) * | 2019-09-17 | 2020-02-11 | 中国水利水电第四工程局有限公司 | Single-hole double-plug section type blasting method |
| CN111207638A (en) * | 2020-03-20 | 2020-05-29 | 本钢板材股份有限公司 | Deep hole trenching blasting method for strip mine |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180622 |
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| RJ01 | Rejection of invention patent application after publication |