CN107829740A - Mining method of extremely-thin steeply-inclined ore body - Google Patents
Mining method of extremely-thin steeply-inclined ore body Download PDFInfo
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- CN107829740A CN107829740A CN201711206644.6A CN201711206644A CN107829740A CN 107829740 A CN107829740 A CN 107829740A CN 201711206644 A CN201711206644 A CN 201711206644A CN 107829740 A CN107829740 A CN 107829740A
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- ore
- lower wall
- mining
- courtyard
- rock
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000005065 mining Methods 0.000 title claims abstract description 19
- 238000005553 drilling Methods 0.000 claims abstract description 18
- 239000011435 rock Substances 0.000 claims abstract description 16
- 238000007598 dipping method Methods 0.000 claims description 13
- 238000011084 recovery Methods 0.000 claims description 10
- 238000004880 explosion Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 210000003462 vein Anatomy 0.000 abstract description 12
- 238000010790 dilution Methods 0.000 abstract description 2
- 239000012895 dilution Substances 0.000 abstract description 2
- 239000006227 byproduct Substances 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention belongs to the technical field of underground mining methods, and discloses a method for mining an extremely-thin steeply-inclined ore body. The method comprises ore block structure parameter division, mining preparation cutting and mining ore removal. Driving the ore body to a footwall raise which is consistent with the inclination angle of the ore body and is superposed with the boundary of the footwall ore rock of the ore body, and by-producing a part of ore; drilling rock drilling chambers at two sides of the lower tray raise at certain intervals, drilling downward ore falling medium-length holes in the rock drilling chambers, and taking the lower tray raise and the compensation space as free surfaces for ore falling. The mining method of the thin vein with changeable dip angles can greatly reduce the ore dilution rate and the ore loss rate in the mining of the extremely thin and steep vein, particularly the mining of the vein with the vein thickness of 0.2-0.8 m; the invention has simple process, and when the lower-wall raise is tunneled, part of the by-product ore is extracted; personnel can enter and exit through the lower-tray raise shaft and operate in the spacious rock drilling chamber, and the safety is good.
Description
Technical field
The present invention relates to underground mining method technical field, and in particular to a kind of recovery method of very thin high-dipping ore block.
Background technology
Steep narrow veins are often referred to inclination angle more than 50 °, and orebody thickness is less than 5m ore body, comprehensive coloured, yellow both at home and abroad
Gold, uranium mine experience with mining, steep narrow veins exploitation uses shallow hole shrinkage method, medium-length hole sublevel open stope method and Nitrate uptake
Three kinds of mining methods of method, wherein：Shallow hole shrinkage method is medium firm above suitable for ore-rock, and more than mineral ore thickness 2m, inclination angle is more than
50 ° of orebody mining prevented from caking；When orebody thickness is less than 1.5m（Minimum can not be less than 0.8m）When, more using Nitrate uptake
Method；Mineral ore thickness 5m or so ore body, then from sublevel open stope method.But the form of steep narrow veins is ever-changing, deposits
There was only 0.5-0.8m in some steep dip and extra-narrow vein orebody thicknesses, some even only 0.1-0.2m, these ore bodies are mostly height
Grade rich ore, but traditional mining methods are helpless, it is necessary to according to Steeply dipping narrow deposits feature, find out one it is feasible
Mining methods, accomplish to make the best use of everything, turn the foul and rotten into the rare and ethereal.
The content of the invention
Steep dip and extra-narrow vein high-grade rich ore can not be exploited the invention aims to solving in the prior art, cause
A kind of the problem of waste of underground limited resources, there is provided recovery method of very thin high-dipping ore block.
In order to achieve the above object, the present invention uses following technical scheme：
A kind of recovery method of very thin high-dipping ore block, comprises the following steps：
1）Block structure parameter divides：Ore body across pitch is divided into nugget, the high 45-80m of nugget, the wide 60-100m of nugget；Nugget
Inside stay and set fore-set, foundation and studding, wherein fore-set thickness 5-8m, foundation thickness 5-10m, the wide 2-5m of studding；
2）Adopt quasi- cutting：Phase of boring transportation roadway first, across pitch tunnels lower wall courtyard supreme one every 10-16m in nugget
Stage transportation roadway, the inclination angle of lower wall courtyard are equal to the slanting angle of ore body, the specifications section of lower wall courtyard for 2.4m × 3.0m~3.6m ×
4.8m, lower wall courtyard side overlap with ore body lower wall ore-rock boundary, dig drawing chute in foundation, drawing chute and nugget it
Between space as the compensation space for falling ore deposit；
3）Back production ore removal：From transportation roadway on last stage, through lower wall courtyard, every 5-8m height, tunnel and dig in lower wall courtyard both sides
Rock chamber, drilling chamber long 2.5-3.0m, specifications section 2.4m × 2.4m~3.0m × 3.0m；In drilling chamber under Drilling to
Fall ore deposit medium-length hole, it is lower to falling ore deposit medium-length hole using lower wall courtyard and compensation space as scope of freedom Luo Kuang, broken ore not ore removal, treat each
After the completion of segment blast, by drawing chute concentrating mining.
Further, when tunneling the lower wall courtyard, first explosion country rock part, after the completion of the clear bottom of country rock, then explosion ore
Part, and replica selection is reclaimed.
Further, ore body is the significantly very thin high-dipping ore block of ore-rock boundary.
The present invention has the advantages that relative to prior art：
A kind of recovery method of very thin high-dipping ore block of the present invention is in the exploitation of very thin steep narrow veins, particularly ore deposit
Arteries and veins thickness can substantially reduce ore dilution rate and ore loss ratio in the exploitation of 0.2-0.8m mineral ore；Present invention process letter
Singly, during lower wall upraise, part replica selection is produced；Personnel are passed in and out by lower wall courtyard, are made in the drilling chamber of spaciousness
Industry, security are good.
Brief description of the drawings
Fig. 1 is the front view of the present invention.
Fig. 2 is the side view of the present invention.
Reference implication is as follows：1. fore-set；2. foundation；3. studding；4. stage transportation roadway；5. lower wall courtyard；6.
Transportation roadway on last stage；7. drawing chute；8. drilling chamber；To falling ore deposit medium-length hole under 9.；10. compensation space；11. collapse
Fall ore.
Embodiment
Northwest gold deposit ore body is in stratiform output, and thickness change is complicated, some some steep dip and extra-narrow vein ore deposits to be present
Body thickness only has 0.5-0.8m, and some even only 0.1-0.2m, these ore bodies are mostly high-grade rich ore, and local ore body even has
Rusty gold output；But the resuing stoping mining methods that mine uses are helpless.Design uses of the present invention one
The recovery method of the very thin high-dipping ore block of kind, production capacity of mining field is about 34t/d.
The present invention is described further with reference to the accompanying drawings and detailed description.
Such as Fig. 1-2, very thin high-dipping ore block recovery method of the invention is in the embodiment of the ore deposit：
Block structure parameter divides：Ore body across pitch is divided into nugget, the high 45-80m of nugget, the wide 60-100m of nugget；In nugget
Stay and set fore-set 1, foundation 2 and studding 3, wherein 1 thick 5-8m of fore-set, 2 thick 5-10m of foundation, 3 wide 2-5m of studding.
Adopt quasi- cutting：By stage transportation roadway 4, across pitch tunnels 5 supreme single order of lower wall courtyard every 15m in nugget first
Section transportation roadway 6, the inclination angle of lower wall courtyard 5 are equal to the slanting angle of ore body, and specifications section 2.4m × 3.0m~3.6m of lower wall courtyard ×
4.8m, the side of lower wall courtyard 5 overlaps with ore body lower wall ore-rock boundary；Drawing chute 7 is dug in foundation 1, digs drawing chute
Space between 7 and nugget is as the compensation space 10 for falling ore deposit.
Back production ore removal：From transportation roadway 6 on last stage, through lower wall courtyard 5, every 5-8m height, dug in the both sides of lower wall courtyard 5
Enter drilling chamber 8, drilling chamber 8 long 2.5-3.0m, specifications section 2.4m × 2.4m~3.0m × 3.0m；In drilling chamber 8
To ore deposit medium-length hole 9 is fallen under Drilling, fall ore deposit medium-length hole 9 with lower wall courtyard 5 and compensation space 10 for scope of freedom Luo Kuang；Broken ore 11
Not ore removal, after the completion for the treatment of each segment blast, by the concentrating mining of drawing chute 7.
Claims (3)
1. a kind of recovery method of very thin high-dipping ore block, it is characterized in that, comprise the following steps：
1）Block structure parameter divides：Ore body across pitch is divided into nugget, the high 45-80m of nugget, the wide 60-100m of nugget；Nugget
Inside stay and set fore-set（1）, foundation（2）And studding（3）, wherein fore-set（1）Thick 5-8m, foundation（2）Thick 5-10m, studding（3）Wide 2-
5m；
2）Adopt quasi- cutting：Phase of boring transportation roadway first（4）, across pitch tunnels lower wall courtyard every 10-16m in nugget（5）
To transportation roadway on last stage（6）, lower wall courtyard（5）Inclination angle be equal to the slanting angle of ore body, lower wall courtyard（5）Specifications section be 2.4m
× 3.0m~3.6m × 4.8m, lower wall courtyard（5）Side overlaps with ore body lower wall ore-rock boundary, in foundation（1）Middle digging ore drawing
Funnel（7）, drawing chute（7）Space between body to be dug up mine is as the compensation space for falling ore deposit（10）；
3）Back production ore removal：From transportation roadway on last stage（6）, through lower wall courtyard（5）, every 5-8m height, in lower wall courtyard（5）Two
Drilling chamber is tunneled in side（8）, drilling chamber（8）Long 2.5-3.0m, specifications section 2.4m × 2.4m~3.0m × 3.0m；In rock drilling
Chamber（8）To falling ore deposit medium-length hole under middle Drilling（9）, it is lower to falling ore deposit medium-length hole（9）With lower wall courtyard（5）And compensation space（10）For
Scope of freedom Luo Kuang, broken ore（11）Not ore removal, after the completion for the treatment of each segment blast, by drawing chute（7）Concentrating mining.
2. a kind of recovery method of very thin high-dipping ore block according to right will go 1, it is characterized in that：Tunnel the lower wall day
Well（5）When, first explosion country rock part, after the completion of the clear bottom of country rock, then explosion ore fraction, and replica selection is reclaimed.
3. a kind of recovery method of very thin high-dipping ore block according to right will go 1, it is characterized in that：The ore body is ore-rock
The significantly very thin high-dipping ore block of boundary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711206644.6A CN107829740A (en) | 2017-11-27 | 2017-11-27 | Mining method of extremely-thin steeply-inclined ore body |
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|---|---|---|---|
| CN201711206644.6A CN107829740A (en) | 2017-11-27 | 2017-11-27 | Mining method of extremely-thin steeply-inclined ore body |
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| CN107829740A true CN107829740A (en) | 2018-03-23 |
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| CN201711206644.6A Pending CN107829740A (en) | 2017-11-27 | 2017-11-27 | Mining method of extremely-thin steeply-inclined ore body |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630118A (en) * | 2018-11-16 | 2019-04-16 | 西北矿冶研究院 | Mining method for steeply inclined unstable thin ore body |
| CN110094205A (en) * | 2019-05-23 | 2019-08-06 | 唐山三友矿山有限公司 | A kind of control method improving limestone exploitation quality |
| CN110952982A (en) * | 2019-11-14 | 2020-04-03 | 西安建筑科技大学 | Medium-length hole presplitting blasting mining method for steeply inclined thin-vein to extremely thin-vein ore body |
| CN113748257A (en) * | 2019-02-26 | 2021-12-03 | 诺瓦美拉公司 | Method and system for mining |
| CN114183142A (en) * | 2021-12-08 | 2022-03-15 | 西北矿冶研究院 | Method for mining inclined and steeply inclined thin ore body |
Citations (4)
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|---|---|---|---|---|
| SU1650910A1 (en) * | 1986-11-24 | 1991-05-23 | Институт горного дела | Method of mining thin steep ore bodies |
| CN104153780A (en) * | 2014-07-28 | 2014-11-19 | 鞍钢集团矿业公司 | Sublevel caving shrinkage continuous recovery process for thin ore body |
| RU2553819C1 (en) * | 2014-04-15 | 2015-06-20 | Открытое акционерное общество Приаргунское производственное горно-химическое объединение (ОАО ППГХО) | Method of setting of alowable minimum thickness of ore body for sublevel pillar-and-breast system |
| CN106285678A (en) * | 2016-10-24 | 2017-01-04 | 中南大学 | Annular medium-length hole stage mineral building mining methods |
-
2017
- 2017-11-27 CN CN201711206644.6A patent/CN107829740A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1650910A1 (en) * | 1986-11-24 | 1991-05-23 | Институт горного дела | Method of mining thin steep ore bodies |
| RU2553819C1 (en) * | 2014-04-15 | 2015-06-20 | Открытое акционерное общество Приаргунское производственное горно-химическое объединение (ОАО ППГХО) | Method of setting of alowable minimum thickness of ore body for sublevel pillar-and-breast system |
| CN104153780A (en) * | 2014-07-28 | 2014-11-19 | 鞍钢集团矿业公司 | Sublevel caving shrinkage continuous recovery process for thin ore body |
| CN106285678A (en) * | 2016-10-24 | 2017-01-04 | 中南大学 | Annular medium-length hole stage mineral building mining methods |
Non-Patent Citations (1)
| Title |
|---|
| 刘念苏: "《金属矿床开采》", 31 August 2012, 冶金工业出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630118A (en) * | 2018-11-16 | 2019-04-16 | 西北矿冶研究院 | Mining method for steeply inclined unstable thin ore body |
| CN113748257A (en) * | 2019-02-26 | 2021-12-03 | 诺瓦美拉公司 | Method and system for mining |
| CN110094205A (en) * | 2019-05-23 | 2019-08-06 | 唐山三友矿山有限公司 | A kind of control method improving limestone exploitation quality |
| CN110952982A (en) * | 2019-11-14 | 2020-04-03 | 西安建筑科技大学 | Medium-length hole presplitting blasting mining method for steeply inclined thin-vein to extremely thin-vein ore body |
| CN110952982B (en) * | 2019-11-14 | 2021-03-02 | 西安建筑科技大学 | Medium-length hole presplitting blasting mining method for steeply inclined thin-vein to extremely thin-vein ore body |
| CN114183142A (en) * | 2021-12-08 | 2022-03-15 | 西北矿冶研究院 | Method for mining inclined and steeply inclined thin ore body |
| CN114183142B (en) * | 2021-12-08 | 2023-10-13 | 西北矿冶研究院 | Method for mining inclined and steeply inclined thin ore body |
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Application publication date: 20180323 |
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