CN109577983B - Mining method for steeply inclined thin ore body with locally widened thickness - Google Patents
Mining method for steeply inclined thin ore body with locally widened thickness Download PDFInfo
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- CN109577983B CN109577983B CN201811366891.7A CN201811366891A CN109577983B CN 109577983 B CN109577983 B CN 109577983B CN 201811366891 A CN201811366891 A CN 201811366891A CN 109577983 B CN109577983 B CN 109577983B
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- ore
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- nugget
- broadens
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
-
- 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
Abstract
The invention discloses a mining method of a steeply inclined thin ore body with locally widened thickness, which comprises the steps of dividing the ore body into ore blocks, and dividing the part with locally widened thickness to the middle upper part of the ore blocks; a bottom column, a top column and a stud are arranged in the ore block; tunneling a pedestrian raise at one side of the stud, tunneling a ventilation raise at the center of the ore block, and tunneling an ore drawing funnel at the bottom of the ore block; tunneling a vein-following transportation lane at the position where the thickness of the ore body is locally widened, and tunneling a connecting lane from the vein-following transportation lane to the position where the thickness of the ore body is locally widened; the first stoping project, the first large-scale ore drawing project, the second stoping project, the second large-scale ore drawing project and the beneficial effects are carried out in sequence: the problem of traditional shrinkage method mining similar ore body when the ore body thickness part widen part ore often stay on the footwall rock mass, can't discharge is solved.
Description
Technical field
The invention belongs to underground mining method technical fields, and in particular to a kind of Steeply dipping narrow deposits that thickness locally broadens
Recovery method.
Background technique
Compared with other mining powers of the world, Mineral Resources in China preservation has large mineral resources such as apparent copper, iron
Quantity relative deficiency, the small rare mineral rich in mineral resources of the dosages such as tungsten, antimony；Large and super-large deposits are few, middle-size and small-size mineral deposit
The features such as more.The special resource enrichness status in China determines that Steep Dipping Ore Body Extraction is always the main right of China's mining tackling of key scientific and technical problems
As.Under normal circumstances, Steeply dipping narrow deposits exploitation mostly uses two kinds of mining methods of shallow hole shrinkage method and resuing stoping, wherein cutting
Wall filling method is chiefly used in exploiting the ores such as gold, tungsten value compared with large ore deposit because of mining cost height；Shrinkage stoping is in high-dipping lean ore
It is most commonly seen in body exploitation.But lean ore body is complicated and changeable, and disc thickness locally broadens under ore body sometimes, in shrinkage mining,
The part ore is often trapped on lower wall rock mass, can not be released, and is commonly called as " dead mine ", is caused ore permanent loss.Therefore having must
Existing shrinkage method mining technology is improved, the Steeply dipping narrow deposits exploitation locally to broaden suitable for thickness.
Summary of the invention
Object of the present invention is to be also easy to produce " dead mine " for the Steeply dipping narrow deposits that thickness locally broadens, a kind of solution mine is proposed
The recovery method of stone Damage for Detention.
Technical solution of the present invention: a kind of Steeply dipping narrow deposits recovery method that thickness locally broadens, this method are suitable for
Disc thickness locally broadens the Steeply dipping narrow deposits no more than 5m under ore body, it is characterized in that: A structural parameters: being mine by ore body division
Block, and position that thickness locally broadened is divided into nugget middle and upper part；High 45 ~ the 80m of nugget, the wide 60 ~ 100m of nugget；It stays and sets in nugget
Foundation, top pillar and studding, foundation 5 ~ 10m of thickness, top pillar 3 ~ 5m of thickness, the wide 3 ~ 5m of studding；
B adopts quasi- cutting engineering: way shaft is tunneled in studding side, in nugget center tunneling ventilation courtyard, and in nugget
Drawing chute is tunneled in bottom；Locally broaden position lower wall driving transportation roadway along the pulse in orebody thickness, by transportation roadway along the pulse every 8 ~
15m locally broadens position driving connecting taxiway to orebody thickness, and the connecting taxiway end locally broadens position lower wall ore-rock in orebody thickness
At boundary；
C first time back production engineering: the stoping width of first time back production engineering is that ore body normal reach is entirely thick；Using slicing
Mode, the high 3 ~ 5m of layer；Worker enters stoping operation space by way shaft, stands and carries out layering rock drilling, Luo Kuang on broken ore
Work；Broken ore is released at least partially through drawing chute, and it is lower leaf back production that remaining most of broken ore, which stays in stope,
Engineering provides working space；
D first time a large amount of ore drawing engineerings: after first time back production engineering, a large amount of ore drawing engineerings for the first time is carried out, are passed through
Drawing chute releases broken ore in stope；When broken ore locally broadens 3 ~ 5m of position lower part lower than orebody thickness in stope
When, terminate a large amount of ore drawing engineerings for the first time；
Second of back production engineering of E: chamber blasting pack is placed in the connecting taxiway end, is blocked and is got in touch with using wave arrestment wall after line
Road；Detonate chamber blasting pack, and the orebody thickness position that locally broadens will be cast in explosion to broken ore top goaf；
Second of F a large amount of ore drawing engineerings: after second of back production engineering, second of a large amount of ore drawing engineering is carried out, is passed through
Drawing chute releases the position ore that locally broadens of the orebody thickness under broken ore remaining in stope and pinpoint blasting.
Second of back production engineering needs reasonable computation chamber blasting pack dose, when orebody thickness locally broadens position ore valence
When being worth higher, it should ensure that chamber blasting break line locally broadens outside the lower wall ore-rock boundary of position in country rock in thickness；Work as ore body thickness
Degree part broaden position ore value it is lower when, should ensure that chamber blasting break line locally broadens position lower wall ore-rock circle in thickness
In limiting in ore body.
Beneficial effects of the present invention: it is quick-fried that the position ore that locally broadened using Chamber Blasting to orebody thickness carries out throwing
Broken, broken ore is released together with thickness normal reach ore by bottom structure, solves traditional shrinkage mining similar to ore body
When the orebody thickness site portion ore that locally broadens often be trapped on lower wall rock mass, problem can not be released.
Detailed description of the invention
Fig. 1 is a kind of Steeply dipping narrow deposits recovery method figure that thickness locally broadens；
Fig. 2 is I-I cross section view of Fig. 1；
Fig. 3 is III-III cross section view of Fig. 1；
Appended drawing reference in figure: 1- foundation, 2- top pillar, 3- studding, 4- way shaft, 5- vent (-escape) raise, 6- drawing chute, 7-
Along the pulse transportation roadway, 8- connecting taxiway, 9- broken ore, 10- chamber blasting pack, 11- wave arrestment wall, the goaf 12-, 13- chamber are quick-fried
Broken break line.
Specific embodiment
Inner Mongol Pb-Zn deposits are Steeply dipping narrow deposits, and design uses shallow hole shrinkage method and resuing stoping, wherein shallow bore hole
Shrinkage method is the mine main mining method, is generally used for lean ore body and thickness is greater than the ore shoot back production of 2m；Nitrate uptake rule
It is less than 2m ore shoot for working thickness.The mine is Mineralization Potential of Magmatic Rocks mode, and ore body is complicated and changeable, disc thickness under shallow hole shrinkage method
Part broaden ore body when, often there is ore and be trapped on lower wall rock mass that phenomenon can not be released, cause ore permanent loss.The mine
Test the Steeply dipping narrow deposits recovery method that a kind of thickness of the present invention locally broadens.In conjunction with attached drawing, a kind of thickness office
Specific embodiment of the Steeply dipping narrow deposits recovery method that portion broadens in the mine are as follows:
A structural parameters: being nugget by ore body division, and position that thickness locally broadened is divided into nugget middle and upper part；Nugget
High 60m, the wide 60m of nugget；It is stayed in nugget and sets foundation 1, top pillar 2 and studding 3,1 thickness 5m of foundation, 2 thickness 3m of top pillar, 3 width 3m of studding.
B adopts quasi- cutting engineering: way shaft 4 is tunneled in studding side, the tunneling ventilation courtyard 5 in nugget center, and in mine
Drawing chute 6 is tunneled in block bottom；It locally broadens position lower wall driving transportation roadway 7 along the pulse in orebody thickness, it is every by transportation roadway 7 along the pulse
It locally broadens to orebody thickness position driving connecting taxiway 8 every 8 ~ 15m, 8 end of connecting taxiway locally broadens under position in orebody thickness
At disk ore-rock boundary.
C first time back production engineering: the stoping width of first time back production engineering is that ore body normal reach is entirely thick；Using slicing
Mode, the high 5m of layer；Worker enters stoping operation space by way shaft 4, stands and carries out layering rock drilling, Luo Kuang on broken ore 9
Work；Broken ore 9 is released at least partially through drawing chute 6, and it is lower leaf that remaining most of broken ore 9, which stays in stope,
Back production engineering provides working space.
D first time a large amount of ore drawing engineerings: after first time back production engineering, a large amount of ore drawing engineerings for the first time is carried out, are passed through
Drawing chute 6 releases broken ore 9 in stope.When broken ore 9 locally broadens position lower part lower than orebody thickness in stope
When 5m, terminate a large amount of ore drawing engineerings for the first time.
Second of back production engineering of E: chamber blasting pack 10 is placed in 8 end of connecting taxiway, utilizes 11 envelope of wave arrestment wall after line
Stifled connecting taxiway 8.Detonate chamber blasting pack 10, and the orebody thickness position that locally broadens will be cast in explosion to broken ore 9
In portion goaf 12.
Second of F a large amount of ore drawing engineerings: after second of back production engineering, second of a large amount of ore drawing engineering is carried out, is passed through
Drawing chute 6 releases the position ore that locally broadens of the orebody thickness under broken ore 9 remaining in stope and pinpoint blasting.
10 dose of reasonable computation chamber blasting pack in second of back production engineering, 50 ~ 200kg of single heading charge amount；
Due to the mine orebody thickness locally broaden position ore value it is lower when, to reduce dilution, chamber blasting break line 13 generally exists
Thickness locally broadens in the lower wall ore-rock boundary of position in ore body.
Claims (1)
1. a kind of Steeply dipping narrow deposits recovery method that thickness locally broadens, this method is suitable for disc thickness under ore body and locally broadens
Steeply dipping narrow deposits no more than 5m, it is characterized in that: A structural parameters: being nugget by ore body division, and by thickness part widening section
Position is divided into nugget middle and upper part；High 45 ~ the 80m of nugget, the wide 60 ~ 100m of nugget；It is stayed in nugget and sets foundation (1), top pillar (2) and studding
(3), 5 ~ 10m of foundation (1) thickness, top pillar (2) 3 ~ 5m of thickness, studding (3) wide 3 ~ 5m；
B adopts quasi- cutting engineering: way shaft (4) are tunneled in studding (3) side, in nugget center tunneling ventilation courtyard (5), and
Drawing chute (6) are tunneled in nugget bottom；It locally broadens position lower wall driving transportation roadway (7) along the pulse in orebody thickness, by transporting along the pulse
Defeated lane (7) locally broadens to orebody thickness position driving connecting taxiway (8) every 8 ~ 15m, and connecting taxiway (8) end is in orebody thickness office
Portion broadens at the lower wall ore-rock boundary of position；
C first time back production engineering: the stoping width of first time back production engineering is that ore body normal reach is entirely thick；Using slicing side
Formula, the high 3 ~ 5m of layer；Worker by way shaft (4) enter stoping operation space, stand carried out on broken ore (9) layering rock drilling,
Fall miner's work；Broken ore (9) is released at least partially through drawing chute (6), remaining most of broken ore (9) stays in stope
It is interior, working space is provided for lower leaf back production engineering；
D first time a large amount of ore drawing engineerings: after first time back production engineering, a large amount of ore drawing engineerings for the first time is carried out, ore drawing is passed through
Funnel (6) releases broken ore in stope (9)；When broken ore (9) locally broadens under position lower than orebody thickness in stope
When 3 ~ 5m of portion, terminate a large amount of ore drawing engineerings for the first time；
Second of back production engineering of E: chamber blasting pack (10) are placed in connecting taxiway (8) end, utilize wave arrestment wall (11) after line
It blocks connecting taxiway (8)；It detonates chamber blasting pack (10), the orebody thickness position that locally broadens will be cast explosion to Caving System
In stone (9) top goaf (12)；
Second of F a large amount of ore drawing engineerings: after second of back production engineering, second of a large amount of ore drawing engineering is carried out, ore drawing is passed through
Funnel (6) locally broadens the orebody thickness under broken ore (9) remaining in stope and pinpoint blasting the releasing of position ore.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811366891.7A CN109577983B (en) | 2018-11-16 | 2018-11-16 | Mining method for steeply inclined thin ore body with locally widened thickness |
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| CN201811366891.7A CN109577983B (en) | 2018-11-16 | 2018-11-16 | Mining method for steeply inclined thin ore body with locally widened thickness |
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| CN109577983A CN109577983A (en) | 2019-04-05 |
| CN109577983B true CN109577983B (en) | 2019-11-12 |
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| CN112081592B (en) * | 2020-09-21 | 2022-07-19 | 赣州有色冶金研究所有限公司 | Safe stoping method for steeply-inclined crushed thin vein |
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|---|---|---|---|---|
| RU2307936C1 (en) * | 2006-08-14 | 2007-10-10 | Государственное образовательное учреждение высшего профессионального образования "Южно-Российский государственный технический университет (Новочеркасский политехнический институт)" | Method for inclined ore deposit development |
| CN101967973A (en) * | 2009-07-28 | 2011-02-09 | 鞍钢集团矿业公司 | Open stope-caving combined mining method |
| CN103590831A (en) * | 2013-11-22 | 2014-02-19 | 北京科技大学 | Novel mining method of gently-inclined thin and medium thickness ore bodies |
| CN107829739A (en) * | 2017-11-27 | 2018-03-23 | 西北矿冶研究院 | Mining method of steeply inclined thin vein |
-
2018
- 2018-11-16 CN CN201811366891.7A patent/CN109577983B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2307936C1 (en) * | 2006-08-14 | 2007-10-10 | Государственное образовательное учреждение высшего профессионального образования "Южно-Российский государственный технический университет (Новочеркасский политехнический институт)" | Method for inclined ore deposit development |
| CN101967973A (en) * | 2009-07-28 | 2011-02-09 | 鞍钢集团矿业公司 | Open stope-caving combined mining method |
| CN103590831A (en) * | 2013-11-22 | 2014-02-19 | 北京科技大学 | Novel mining method of gently-inclined thin and medium thickness ore bodies |
| CN107829739A (en) * | 2017-11-27 | 2018-03-23 | 西北矿冶研究院 | Mining method of steeply inclined thin vein |
Non-Patent Citations (1)
| Title |
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| 急倾斜极薄矿脉采矿方法试验研究与应用;张传柱等;《黄金》;20160630;第37卷(第6期);第36-38页 * |
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