CN106089212B - Hard rock quickly digs courtyard blasting design method - Google Patents
Hard rock quickly digs courtyard blasting design method Download PDFInfo
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- CN106089212B CN106089212B CN201610568150.1A CN201610568150A CN106089212B CN 106089212 B CN106089212 B CN 106089212B CN 201610568150 A CN201610568150 A CN 201610568150A CN 106089212 B CN106089212 B CN 106089212B
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000005422 blasting Methods 0.000 title claims abstract description 26
- 239000011435 rock Substances 0.000 title claims abstract description 18
- 238000013461 design Methods 0.000 title claims abstract description 11
- 238000004880 explosion Methods 0.000 claims abstract description 43
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 230000011218 segmentation Effects 0.000 claims abstract description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of hard rock quickly to dig courtyard blasting design method, and its method and step is：（1）Some emptying apertures are bored on explosion centre bore, then circumference centered on explosion centre bore to boring in the case where intending the center of digging raise face；（2）Explosion centre bore implements center single hole blasting in groups using VCR methods, and cave is led at formation center；（3）Cave is led as free space using center, implements segmentation homogeneous side blasting using lateral avalanche blasthole and quickly digs well；The circle footpath of the lateral avalanche steel for shot is according to formula（I）Calculate, hole count is according to formula（II）Calculate.The present invention is first drilled with blasting hole with VCR methods, and courtyard center is quickly formed using the compensation space of the lower space scope of freedom and holes around and leads cave, is then led blasthole on the outside of cave using center and is implemented side blasting simultaneous shaft sin king；The simple work shafts such as quick digging slot raise, fill pass and service shaft can be achieved；Exploited for underground ore large-scale cooperative and create basic condition, ensure ore feed speed.
Description
Technical field
The present invention relates to a kind of mine to dig technology, and especially a kind of hard rock quickly digs courtyard blasting design method.
Background technology
In recent years, metallurgical mine economic environment integrally glides, and Iron concentrate price cliff of displacement formula drop, Zoomlion increases against gesture
Production.To break away from the dependence of external ore body resource, China, which just quickens one's step, promotes the research of extensive high efficient mining technology.However,
In order to which technology is dug in the explosion of the engineerings such as slot raise, fill pass and the service shaft in mining methods needed for the exploitation of super large ability
It is not significantly improved also.Ore and rock condition especially larger to hard rock, clipping, blasting technique some mines application still
Continue to use it is traditional it is single climb tank method, VCR methods, lower to short pick method etc., hinder speed of application.
The method of conventional deep hole pick courtyard has two classes, when emptying aperture slotting method, second, vulnerabilities database method.Emptying aperture slotting needs
The many emptying apertures of Drilling provide lateral free explosion space, and longhole drilling efficiency is low, and eccentricity is difficult to control；Vulnerabilities database method
Complex process easily causes plug-hole phenomenon, it is necessary to the process repeated measurement such as powder charge, back-up sand, and layering blasthole is more, the requirement of explosion line
Height, last time shotfiring safety is poor, and layering blasting in groups is often.The blasting method of conventional down-the-hole pick courtyard have suspended bulkhead raising method,
Climb tank method, be lower to drivage method, digging speed ratio is dug well according to deep hole, and method is slow and security is poor.
Therefore, it is necessary to which a kind of quick bursting digging courtyard technology being adapted under the conditions of hard rock meets the big rule in following mine
The interoperability requirement of mould exploitation.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of hard rock quickly to dig courtyard blasting design method.
In order to solve the above technical problems, the technical solution used in the present invention is：（1）Intending digging in raise face
Some emptying apertures are bored on explosion centre bore, then circumference centered on explosion centre bore to boring under heart position；
（2）Explosion centre bore implements center single hole blasting in groups using VCR methods, and cave is led at formation center；
（3）Cave is led as free space using center, implements segmentation homogeneous side blasting using lateral avalanche blasthole and quickly digs well；
The circle footpath of the lateral avalanche steel for shot is according to formula（I）Calculate, hole count is according to formula（II）Calculate；
（I）
（II）
In formula：i=1、2、3...n；
K is the ore-rock coefficient of volumetric expansion；
DiI-th circle circle footpath of lateral avalanche blasthole, m；
D0The circle footpath of the emptying aperture parallel with explosion centre bore is represented, is 0.8m~1.2m；
NiFor the number of each lateral avalanche blasthole of circle；
M is close coefficient, takes 1~2.
Step of the present invention（1）In, a diameter of 120mm~150mm of explosion centre bore, in 400mm~600mm circle
4~6 and vertical parallel and with aperture the emptying aperture of explosion centre bore are bored on week.
Step of the present invention（2）In, single loaded length 700mm~900mm during explosion, pack buried depth
800mm~1500mm, single explosion floor height are 1.5m~2m.
Step of the present invention（2）In, by 10~15 separate explosions can be formed 20m~30m it is deep lead cave.
It is using beneficial effect caused by above-mentioned technical proposal：The present invention digs courtyard profile chi according to intending constructing
It is very little, first it is drilled with blasting hole at courtyard center（Explosion centre bore and emptying aperture）, utilize the lower space scope of freedom and the benefit of holes around
Repay space courtyard center is quickly formed using VCR method explosion centre bores and lead cave, then lead blasthole on the outside of cave using center and implement side
To explosion simultaneous shaft sin king；The simple work shafts such as quick digging slot raise, fill pass and service shaft can be achieved；This method is opened
The slot raise of pick can be that basic condition is created in ore large-scale cooperative exploitation in underground, ensure ore feed speed.
The present invention combines the advantages of deep hole method hollow hole slotting and vulnerabilities database method, with centre bore explosion quickly in courtyard
Formed at center and lead cave, then using side blasting avalanche Cheng Jing of the lateral deep hole in outer ring, be effectively shortened into the well time,
Security and the more conventional method of high efficiency are good.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is blasting hole layout diagram of the present invention；
Fig. 2 is that lateral blasthole of the invention lays circle schematic diagram.
In figure：1- explosion centre bores；2- emptying apertures；The lateral avalanche blastholes of 3-；D 0 - the emptying aperture parallel with explosion centre bore
Circle footpath；D 1 The circle footpath of the lateral avalanche blasthole of-first lap；D 2 The circle footpath of-the second lateral avalanche blasthole of circle；D 3 - the three circle side
To the circle footpath of avalanche blasthole.
Embodiment
This hard rock quickly digs courtyard blasting design method and is applied to the simple courtyard of hard rock（Length 20m~30m）Explosion
Excavation work；Fig. 1, shown in 2, this method step is：（1）Intend digging raise face center under to bore 120mm~
The explosion centre bore 1 of 150mm diameters；Again centered on explosion centre bore 1,4~6 are bored on radius 400mm~600mm circumference
It is individual identical with the aperture of explosion centre bore 1 with the vertical parallel emptying aperture 2 of explosion centre bore 1, emptying aperture 2.
（2）Tunnel immediately below courtyard to be dug is free space, with 4~6 emptying apertures 2 for lateral compensation space, with VCR
Method（The from bottom to top explosion of large diameter, deep borehole spheric cartridge）Implementation center single hole blasting in groups, single loaded length 700mm~
900mm, pack buried depth 800mm~1500mm, single explosion floor height are 1.5m~2m；It can be formed by 10~15 separate explosions
Cave is led at center deep 20m~30m, and the radius that cave is led at center is 400mm~600mm.The tunnel is to have been constructed before courtyard is dug
Into cutting tunnel.
（3）Explosion is carried out as free space with lateral avalanche blasthole to lead cave and bottom tunnel, lateral avalanche blasthole 3 is arranged
Circle footpathD i By formula（I）Calculate：
（I）
Wherein：i=1、2、3...n；
kFor the ore-rock coefficient of volumetric expansion；
D i The of lateral avalanche blastholeiCircle circle footpath, m；
D 0 The emptying aperture circle footpath parallel with explosion centre bore is represented, is 0.8m~1.2m.
（4）According to formula（Ⅰ）The circle footpath value of lateral avalanche blasthole 3 is calculated, it is once quick-fried to design lateral avalanche blasthole 3 according to this
It is broken, if the circle footpath of the lateral avalanche blasthole of first lapD 1 Courtyard dimensions can not be reached, then according to the circle of formula iterative calculation secondD 2 , the 3rd circleD 3 ... the circle footpath of the n-th lateral avalanche blasthole of circleD n , until meeting courtyard dimensions, the same section of blasthole in circle is different
Circle is segmented same separate explosion.The pitch of holes of lateral avalanche blasthole 3 is respectively enclosed according to formula（II）Calculate：
Wherein：
N i For the number of each lateral avalanche blasthole of circle；
D i Meaning is same as above；
mFor close coefficient, 1~2 is taken.
Embodiment：Certain gold mine digs a filling well for leading to earth's surface on dead zone top, hole diameter 2m, is bored using geology
Drilled, aperture 150mm.The gold mine rock is harder, the coefficient of volumetric expansion 1.3~1.5, and filling well explosion uses emulsion, fries
Medicine density 1007kg/m3, cartridge size 120mm.
Coefficient of volumetric expansion k=1.4 are taken, a 150mm diameter VCR method blastholes are bored in courtyard center using geology（Explosion centre bore）,
The distance center 500mm around（D0Half, take D0=1m）Circumference on be evenly arranged 5 emptying apertures.It is quick-fried to implement VCR methods
Broken, single loaded length 700mm~900mm, pack buried depth 800mm~1500mm, single explosion floor height are 1.5m~2m.
Utilize formula（I）Calculate D1=1.87m, that is, the filling of 2m diameters can be substantially met by laying a lateral avalanche blasthole of circle
The requirement of well dimensions.
Lateral blasthole circle cloth hole close coefficient takes 1.5, utilizes formula（II）First lap the number of the boring hole is calculated as 9；By 9
Individual blasthole is evenly arranged in first lap.
The final blasting parameter using designed by this method, earth's surface filling well is quickly dug, effectively and timely to dead zone
Filled, avoid the generation of dead zone disaster accident.
Claims (4)
1. a kind of hard rock quickly digs courtyard blasting design method, it is characterised in that its method and step is：（1）Intending digging day
To brill explosion centre bore under the center of well working face（1）, then with explosion centre bore（1）Centered on circumference on bore some skies
Hole（2）；
（2）Explosion centre bore（1）Center single hole blasting in groups is implemented using VCR methods, cave is led at formation center；
（3）Cave is led as free space using center, utilizes lateral avalanche blasthole（3）Implement segmentation homogeneous side blasting quickly to dig well；
The lateral avalanche blasthole（3）Circle footpath according to formula（I）Calculate, hole count is according to formula（II）Calculate；
（I）
（II）
In formula：i=1、2、3...n；
K is the ore-rock coefficient of volumetric expansion；
DiI-th circle circle footpath of lateral avalanche blasthole, m；
D0The circle footpath of the emptying aperture parallel with explosion centre bore is represented, is 0.8m~1.2m；
NiFor the number of each lateral avalanche blasthole of circle；
M is close coefficient, takes 1~2.
2. hard rock according to claim 1 quickly digs courtyard blasting design method, it is characterised in that：The step（1）
In, explosion centre bore（1）A diameter of 120mm~150mm, on 400mm~600mm circumference bore 4~6 with explosion center
Vertical parallel and with aperture the emptying aperture in hole（2）.
3. hard rock according to claim 1 quickly digs courtyard blasting design method, it is characterised in that：The step（2）
In, single loaded length 700mm~900mm during explosion, pack buried depth 800mm~1500mm, single explosion floor height is
1.5m~2m.
4. the hard rock according to claim 1,2 or 3 quickly digs courtyard blasting design method, it is characterised in that：The step
Suddenly（2）In, by 10~15 separate explosions can be formed 20m~30m it is deep lead cave.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610568150.1A CN106089212B (en) | 2016-07-19 | 2016-07-19 | Hard rock quickly digs courtyard blasting design method |
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| CN107131806B (en) * | 2017-05-09 | 2019-11-12 | 深圳市中金岭南有色金属股份有限公司 | Service shaft is disposably at well blasting method |
| CN108151595A (en) * | 2017-11-28 | 2018-06-12 | 西藏华泰龙矿业开发有限公司 | The disposable well completion method of VCR methods |
| CN108374661A (en) * | 2018-02-06 | 2018-08-07 | 浙江省隧道工程公司 | A kind of middle pilot shaft shaft formatting by one blasting method |
| CN109539915B (en) * | 2018-12-27 | 2021-03-16 | 攀钢集团工程技术有限公司 | Cutting raise blasting construction method |
| RU2728071C2 (en) * | 2019-01-14 | 2020-07-28 | Федеральное государственное казённое учреждение "12 Центральный научно-исследовательский институт" Министерства обороны Российской Федерации | Well expansion method |
| 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 |
| CN111156019B (en) * | 2019-12-26 | 2021-07-27 | 临沂会宝岭铁矿有限公司 | Drilling device for blasting and inclined drop shaft one-step forming segmented blasting method |
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| CN1212360A (en) * | 1998-09-07 | 1999-03-31 | 韦华南 | Blasting method reaming technique of raise raising by longhole method |
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