CN109341449A - A kind of high courtyard primary drilling Discrete control explosion well completion method of big section - Google Patents
A kind of high courtyard primary drilling Discrete control explosion well completion method of big section Download PDFInfo
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- CN109341449A CN109341449A CN201811227028.3A CN201811227028A CN109341449A CN 109341449 A CN109341449 A CN 109341449A CN 201811227028 A CN201811227028 A CN 201811227028A CN 109341449 A CN109341449 A CN 109341449A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- 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
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- 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)
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Abstract
The invention discloses a kind of big high courtyard primary drilling Discrete control explosion well completion methods of section, including (1) to determine drilling machine type；(2) determination of explosion simultaneous shaft sin king specification；(3) compensation space；(4) blasthole is determined；(5) powder charge；(6) short-delay time；(7) it detonates；Beneficial effects of the present invention are the high simultaneous shaft sin king technology perforating of 70 meters big section, powder charge, the entire work progress of explosion, construction personnel completes in the drilling chamber of top, it realizes inside courtyard, lower part unmanned operation, avoids the security risks such as falling from high altitude, high-altitude junk, scalings；It is aerated without installing special blower or air hose；Without setting up ladder, job platform, without using pusher leg drill, save the cost, labor intensity is low, and operating condition is good, realizes essential safety operation；Primary drilling sectional blasting method process is simple, from perforating to explosion Cheng Jing, the construction period 22-27 days.
Description
Technical field
The present invention relates to a kind of coal mining methods, in particular to a kind of big high courtyard primary drilling Discrete control of section
Explosion well completion method.
Technical background
Full stage (up and down) combination is mainly used to dig quick-fried mining codes i.e. FCM method in the back production of iron ore underground, similar
In the construction that mine slot raise, mine chute and the dark vertical of type extend, often since courtyard height is big, ore hardness is big, day
Well driving is always the problem of mining industry and the most important link of mining.
In conventional mining method, such as common law, suspended bulkhead raising method；It is small that common law driving courtyard generally tunnels height
In 60 meters of courtyard, using, to eye, installing people's row ladder, erect bracket, workbench is upward with driving on airleg rock drill Drilling
It is mobile.The equipment such as platform, geomantic omen pipe, drilling machine are withdrawn before explosion, prevent explosion from damaging.Courtyard takes the upward anti-mode dug to dig
Into ventilation is difficult, and ventilation time is long.The technique have complex procedures, Working gantry height, large labor intensity, driving speed slowly,
Low efficiency, ventilation time length, high material consumption, it is at high cost, operation it is dangerous the disadvantages of.
Suspended bulkhead raising method construction cutting well, although working procedure is reduced, ventilation and working environment are improved, and personnel need
It constructs in cutting well, while increasing support staff, capital investment is big.
Anti- well drilling machine method is using rotary drilling broken rock pore-forming and reversed reaming, rock is squeezed using hobboing cutter, scraping and
The method of shearing-crushing rock Cheng Jing, rock belong to extremely hard rock class, and penetration rate is slow, low efficiency, cost serious to hob abrasion
It is high.
Common law and anti-well drilling machine method require just carry out kerve to the secondary expansion brush of cutting well progress, and program is complicated, applies
Work efficiency fruit is poor, is easy to appear and expands the problems such as groove height is inadequate.
Summary of the invention
The purpose of the present invention is to provide a kind of big high courtyard primary drilling Discrete control explosion well completion method of section, Ke Yiti
Height cutting well construction efficiency, lifting construction safety coefficient reduce labor intensity of workers, improve construction environment, and short time limit is safe
Pit mining method.
In order to solve the above technical problem, the present invention provides the high courtyard primary drilling Discrete control explosion Cheng Jingfang of big section
Method, technical essential are as follows:
(1) drilling machine type is determined according to rock body quality of mine property, blast charging amount etc., is determined and is drilled by the drilling machine type
Diameter；
(2) height of the determination of explosion simultaneous shaft sin king specification, courtyard segmentation is mainly related with rock property and compensation space,
70 meters of day well sections are tall and big, use 3 meters of * 3 meters of sections, explosion height of lift for 5 meters；
(3) compensation space passes through to the compensation space for accommodating each segment blast fractured rock, after each segment blast, rock
Block falls on lower part chamber, forms heap body, if the onepull day a height of H of well section, cross-sectional area S, courtyard inclination angle is α, lower part cave
The a height of h in room；
Vb=Sh
Vz=SH (k-1)/sin α
In formula, Vb is rock mass compensation space；Vz is the broken swollen rear volume size of rock mass, and k is broken swollen coefficient；If under thinking avalanche
Rock can be accommodated by lower part rock mass engineering project chamber completely, then need Vb > Vz；
(4) effect according to each blasthole in courtyard is arranged keyhole in center blasthole periphery, is forming courtyard shape
Periphery hole is arranged in position, and the periphery hole is set on four angles of courtyard profile；
(5) powder charge, using the explosion medication to match with explosion burden；
(6) short-delay time, first banger hole and time banger hole short-delay time are T
T=t1+t2+t3
T1 is that rock crack and crack propagation time occurs, and t2 is that the throwing of rock slag is full of the cavity time, and t3 is that rock slag is fallen
Form the time of cavity；
(7) it is there are enough scope of freedoms when ringing shot hole blasting after ensuring, blasting quality is improved, using half second delay detonator
Detonator couples fuse arming test experiment initiation, and igniting primer is put in blasthole bottom.
Preferably, the cross-sectional area of courtyard should be determined according to the lump ore full-size for falling mine, due to the increase with well depth,
More up, well head section can be gradually reduced；Cross-sectional area is 9 square metres, and penalty coefficient is 0.55~0.7, and single explosion section is high
It can achieve 5~7 meters；If penalty coefficient is less than 0.5, a height of 2~4 meters of single explosion section；In soft rock borehole blasting Cheng Jing,
Explosion height of lift can be greater than 10 meters, for nature of ground be in it is hard or more, explosion height of lift should be less than 10 meters or less.
Preferably, it detonates one by one for blasthole, and if short-delay time differs greatly, no matter how blasthole is arranged, as long as
Blasthole spacing is up to standard, and broken rock volume can be accommodated by lower part chamber, can realize courtyard；But drilling machine construction for convenience,
Blasthole position still needs to be arranged according to certain rule.
Preferably, short-delay time relatively reasonable between via hole and keyhole is generally 95-105ms, periphery hole with it is auxiliary
It helps relatively reasonable short-delay time between hole to should be greater than 150ms, preferable demolition effect can be obtained.
Preferably, the explosive that explosion velocity is 3000m/s or so is suitable for medium-hard rock, being capable of preferable demolition effect；It is quick-fried
Speed is that the explosive of 4000m/s or so is suitable for solid rock, and demolition effect is good；In addition to it is prevented from first banger hole, because
It is excessive for detonation energy, lead to excessive impact dynamic pressure, fragmented rock is blocked in hole, the charge constitution in first banger hole,
The determination of degree of packing and explosive payload is most important, and has significant impact to the detonation of subsequent blasthole, determines demolition effect.
Preferably, to prevent blasthole from phenomenon of miss-firing occur, blasting quality is influenced, each blasthole is all made of double Nonel detonators
Detonation.
Beneficial effects of the present invention are the high simultaneous shaft sin king technology perforating of 70 meters big section, powder charge, the entire work progress of explosion, are applied
Worker person completes in the drilling chamber of top, realizes inside courtyard, lower part unmanned operation, avoids falling from high altitude, high-altitude
The security risks such as junk, scalings；It is aerated without installing special blower or air hose；Without setting up ladder, job platform,
Without using pusher leg drill, save the cost, labor intensity is low, and operating condition is good, realizes essential safety operation；Primary chisel
Rock sectional blasting method process is simple, from perforating to explosion Cheng Jing, the construction period 22-27 days.
Detailed description of the invention
Fig. 1 is cloth hole schematic diagram of the present invention
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, the present invention is carried out further specifically
It is bright.
Big section high courtyard primary drilling Discrete control explosion well completion method provided by the invention, technical essential are as follows:
(1) drilling machine type is determined according to rock body quality of mine property, blast charging amount etc., is determined and is drilled by the drilling machine type
Diameter；
(2) height of the determination of explosion simultaneous shaft sin king specification, courtyard segmentation is mainly related with rock property and compensation space,
70 meters of day well sections are tall and big, use 3 meters of * 3 meters of sections, explosion height of lift for 5 meters；
(3) compensation space passes through to the compensation space for accommodating each segment blast fractured rock, after each segment blast, rock
Block falls on lower part chamber, forms heap body, if the onepull day a height of H of well section, cross-sectional area S, courtyard inclination angle is α, lower part cave
The a height of h in room；
Vb=Sh
Vz=SH (k-1)/sin α
In formula, Vb is rock mass compensation space；Vz is the broken swollen rear volume size of rock mass, and k is broken swollen coefficient；If under thinking avalanche
Rock can be accommodated by lower part rock mass engineering project chamber completely, then need Vb > Vz；
(4) effect according to each blasthole in courtyard is arranged keyhole in center blasthole periphery, is forming courtyard shape
Periphery hole is arranged in position, and the periphery hole is set on four angles of courtyard profile；
(5) powder charge, using the explosion medication to match with explosion burden；
(6) short-delay time, first banger hole and time banger hole short-delay time are T
T=t1+t2+t3
T1 is that rock crack and crack propagation time occurs, and t2 is that the throwing of rock slag is full of the cavity time, and t3 is that rock slag is fallen
Form the time of cavity；
(7) it is there are enough scope of freedoms when ringing shot hole blasting after ensuring, blasting quality is improved, using half second delay detonator
Detonator couples fuse arming test experiment initiation, and igniting primer is put in blasthole bottom.
Preferably, the cross-sectional area of courtyard should be determined according to the lump ore full-size for falling mine, due to the increase with well depth,
More up, well head section can be gradually reduced；Cross-sectional area is 9 square metres, and penalty coefficient is 0.55~0.7, and single explosion section is high
It can achieve 5~7 meters；If penalty coefficient is less than 0.5, a height of 2~4 meters of single explosion section；In soft rock borehole blasting Cheng Jing,
Explosion height of lift can be greater than 10 meters, for nature of ground be in it is hard or more, explosion height of lift should be less than 10 meters or less.
Preferably, it detonates one by one for blasthole, and if short-delay time differs greatly, no matter how blasthole is arranged, as long as
Blasthole spacing is up to standard, and broken rock volume can be accommodated by lower part chamber, can realize courtyard；But drilling machine construction for convenience,
Blasthole position still needs to be arranged according to certain rule.
Preferably, short-delay time relatively reasonable between via hole and keyhole is generally 95-105ms, periphery hole with it is auxiliary
It helps relatively reasonable short-delay time between hole to should be greater than 150ms, preferable demolition effect can be obtained.
Preferably, the explosive that explosion velocity is 3000m/s or so is suitable for medium-hard rock, being capable of preferable demolition effect；It is quick-fried
Speed is that the explosive of 4000m/s or so is suitable for solid rock, and demolition effect is good；In addition to it is prevented from first banger hole, because
It is excessive for detonation energy, lead to excessive impact dynamic pressure, fragmented rock is blocked in hole, the charge constitution in first banger hole,
The determination of degree of packing and explosive payload is most important, and has significant impact to the detonation of subsequent blasthole, determines demolition effect.
Preferably, to prevent blasthole from phenomenon of miss-firing occur, blasting quality is influenced, each blasthole is all made of double Nonel detonators
Detonation.
Beneficial effects of the present invention are the high simultaneous shaft sin king technology perforating of 70 meters big section, powder charge, the entire work progress of explosion, are applied
Worker person completes in the drilling chamber of top, realizes inside courtyard, lower part unmanned operation, avoids falling from high altitude, high-altitude
The security risks such as junk, scalings；It is aerated without installing special blower or air hose；Without setting up ladder, job platform,
Without using pusher leg drill, save the cost, labor intensity is low, and operating condition is good, realizes essential safety operation；Primary chisel
Rock sectional blasting method process is simple, from perforating to explosion Cheng Jing, the construction period 22-27 days.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Any modifications, equivalent replacements, and improvements etc. done within mind and principle, is all included in the scope of protection of the present invention.
Claims (6)
1. the big high courtyard primary drilling Discrete control explosion well completion method of section, which comprises the steps of:
(1) drilling machine type is determined according to rock body quality of mine property, blast charging amount etc., determines that drilling is straight by the drilling machine type
Diameter；
(2) height of the determination of explosion simultaneous shaft sin king specification, courtyard segmentation is mainly related with rock property and compensation space, and 70 meters
Its well section is tall and big, uses 3 meters of * 3 meters of sections, explosion height of lift for 5 meters；
(3) compensation space is by the way that the compensation space for accommodating each segment blast fractured rock, after each segment blast, sillar is fallen
To lower part chamber, heap body is formed, if the onepull day a height of H of well section, cross-sectional area S, courtyard inclination angle is α, and lower part chamber is high
For h；
Vb=Sh
Vz=SH (k-1)/sin α
In formula, Vb is rock mass compensation space；Vz is the broken swollen rear volume size of rock mass, and k is broken swollen coefficient；If the rock under thinking avalanche
It can be accommodated completely by lower part rock mass engineering project chamber, then need Vb > Vz；
(4) keyhole is arranged in center blasthole periphery, in the position for forming courtyard shape in the effect according to each blasthole in courtyard
Periphery hole is set, and the periphery hole is set on four angles of courtyard profile；
(5) powder charge, using the explosion medication to match with explosion burden；
(6) short-delay time, first banger hole and time banger hole short-delay time are T
T=t1+t2+t3
T1 is that rock crack and crack propagation time occurs, and t2 is that the throwing of rock slag is full of the cavity time, and t3 is that rock slag falls to be formed
The time of cavity；
(7) it is there are enough scope of freedoms when ringing shot hole blasting after ensuring, blasting quality is improved, using half second delay Nonel detonator
Couple fuse arming test experiment initiation, igniting primer is put in blasthole bottom.
2. big section high courtyard primary drilling Discrete control explosion well completion method according to claim 1, which is characterized in that day
The cross-sectional area of well should be determined according to the lump ore full-size for falling mine, due to the increase with well depth, more up, well head section meeting
It is gradually reduced；Cross-sectional area is 9 square metres, and penalty coefficient is 0.55~0.7, and single explosion section height can achieve 5~7 meters；If
Penalty coefficient is less than 0.5, and a height of 2~4 meters of single explosion section；In soft rock borehole blasting Cheng Jing, explosion height of lift can be big
In 10 meters, for nature of ground be in it is hard or more, explosion height of lift should be less than 10 meters or less.
3. big section high courtyard primary drilling Discrete control explosion well completion method according to claim 1, which is characterized in that right
It detonates one by one in blasthole, and if short-delay time differs greatly, no matter how blasthole is arranged, as long as blasthole spacing is up to standard, broken rock
Volume can be accommodated by lower part chamber, can realize courtyard；But drilling machine construction for convenience, blasthole position is still needed to according to one
Fixed rule is arranged.
4. big section high courtyard primary drilling Discrete control explosion well completion method according to claim 1, which is characterized in that auxiliary
Short-delay time relatively reasonable between hole and keyhole is helped to be generally 95-105ms, it is relatively reasonable micro- between periphery hole and via hole
The poor time should be greater than 150ms, can obtain preferable demolition effect.
5. big section high courtyard primary drilling Discrete control explosion well completion method according to claim 1, which is characterized in that quick-fried
The explosive that speed is 3000m/s or so is suitable for medium-hard rock, being capable of preferable demolition effect；Explosion velocity is 4000m/s's or so
Explosive is suitable for solid rock, and demolition effect is good；It is led in addition to being prevented from first banger hole because detonation energy is excessive
Excessive impact dynamic pressure is caused, fragmented rock is blocked in hole, the charge constitution in first banger hole, degree of packing and explosive payload
It determines most important, and has a significant impact to the detonation of subsequent blasthole, determine demolition effect.
6. big section high courtyard primary drilling Discrete control explosion well completion method according to claim 1, which is characterized in that be
It prevents blasthole from phenomenon of miss-firing occur, influences blasting quality, each blasthole is all made of double Nonel detonator detonations.
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| CN201811227028.3A CN109341449B (en) | 2018-10-22 | 2018-10-22 | Sectional control blasting well completion method for one-time rock drilling of large-section high raise |
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|---|---|---|---|
| CN201811227028.3A CN109341449B (en) | 2018-10-22 | 2018-10-22 | Sectional control blasting well completion method for one-time rock drilling of large-section high raise |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043302A (en) * | 2019-05-28 | 2019-07-23 | 河南发恩德矿业有限公司 | A kind of only safe and efficient construction method of head development end vent (-escape) raise of long range |
| CN110307762A (en) * | 2019-08-08 | 2019-10-08 | 福州大学 | A kind of courtyard quick well formation method based on deep hole hole by hole initiation technique |
| CN110578465A (en) * | 2019-08-27 | 2019-12-17 | 湖南柿竹园有色金属有限责任公司 | One-time well drilling and hole distribution method |
| CN111193270A (en) * | 2019-09-09 | 2020-05-22 | 清华大学 | Method and device for flexibly compensating unbalance of three-phase four-leg converter with limited capacity |
| CN112179225A (en) * | 2020-09-27 | 2021-01-05 | 鞍钢集团矿业有限公司 | One-time well-completion blasting method |
| CN112211639A (en) * | 2020-10-13 | 2021-01-12 | 宝钢集团新疆八一钢铁有限公司 | One-step well completion method for high-depth large-section medium-deep hole |
| CN113983883A (en) * | 2021-10-27 | 2022-01-28 | 湖南柿竹园有色金属有限责任公司 | Deep hole internal subsection energy-gathering detonation once-through well completion method |
| CN114001606A (en) * | 2021-10-27 | 2022-02-01 | 湖南柿竹园有色金属有限责任公司 | Method for expanding and distributing holes of circular shaft |
| CN114688928A (en) * | 2022-02-18 | 2022-07-01 | 安徽开发矿业有限公司 | Large-aperture drilling one-time blasting well-forming blast hole arrangement and blasting method for ultra-deep cutting (slip) well |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306679A (en) * | 2013-05-21 | 2013-09-18 | 马钢(集团)控股有限公司 | '|'-shaped free surface holing one-step well completion technology |
| RU2602567C1 (en) * | 2015-11-05 | 2016-11-20 | Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук | Method of blasting ores and rocks |
| CN108132006A (en) * | 2017-12-25 | 2018-06-08 | 中南大学 | Anti-clogging quick well formation undercut blast hole arrangement and its blasting method |
| CN108613599A (en) * | 2018-05-03 | 2018-10-02 | 湖北三鑫金铜股份有限公司 | A method of segmentation courtyard simultaneous shaft sin king |
-
2018
- 2018-10-22 CN CN201811227028.3A patent/CN109341449B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306679A (en) * | 2013-05-21 | 2013-09-18 | 马钢(集团)控股有限公司 | '|'-shaped free surface holing one-step well completion technology |
| RU2602567C1 (en) * | 2015-11-05 | 2016-11-20 | Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук | Method of blasting ores and rocks |
| CN108132006A (en) * | 2017-12-25 | 2018-06-08 | 中南大学 | Anti-clogging quick well formation undercut blast hole arrangement and its blasting method |
| CN108613599A (en) * | 2018-05-03 | 2018-10-02 | 湖北三鑫金铜股份有限公司 | A method of segmentation courtyard simultaneous shaft sin king |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043302A (en) * | 2019-05-28 | 2019-07-23 | 河南发恩德矿业有限公司 | A kind of only safe and efficient construction method of head development end vent (-escape) raise of long range |
| CN110307762A (en) * | 2019-08-08 | 2019-10-08 | 福州大学 | A kind of courtyard quick well formation method based on deep hole hole by hole initiation technique |
| CN110307762B (en) * | 2019-08-08 | 2023-11-21 | 福州大学 | Quick well forming method for courtyard based on deep hole-by-hole detonation technology |
| CN110578465A (en) * | 2019-08-27 | 2019-12-17 | 湖南柿竹园有色金属有限责任公司 | One-time well drilling and hole distribution method |
| CN111193270A (en) * | 2019-09-09 | 2020-05-22 | 清华大学 | Method and device for flexibly compensating unbalance of three-phase four-leg converter with limited capacity |
| CN112179225A (en) * | 2020-09-27 | 2021-01-05 | 鞍钢集团矿业有限公司 | One-time well-completion blasting method |
| CN112211639A (en) * | 2020-10-13 | 2021-01-12 | 宝钢集团新疆八一钢铁有限公司 | One-step well completion method for high-depth large-section medium-deep hole |
| CN113983883A (en) * | 2021-10-27 | 2022-01-28 | 湖南柿竹园有色金属有限责任公司 | Deep hole internal subsection energy-gathering detonation once-through well completion method |
| CN114001606A (en) * | 2021-10-27 | 2022-02-01 | 湖南柿竹园有色金属有限责任公司 | Method for expanding and distributing holes of circular shaft |
| CN114688928A (en) * | 2022-02-18 | 2022-07-01 | 安徽开发矿业有限公司 | Large-aperture drilling one-time blasting well-forming blast hole arrangement and blasting method for ultra-deep cutting (slip) well |
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Denomination of invention: A method of one-time rock drilling and subsection controlled blasting for large section high raise Effective date of registration: 20220107 Granted publication date: 20210219 Pledgee: China Construction Bank Corporation Linyi Luozhuang sub branch Pledgor: LINYI HUI BAO LING IRON Co.,Ltd. Registration number: Y2022980000200 |