CN109339784A - Separate mining combined caving method suitable for adjacent ore bodies - Google Patents
Separate mining combined caving method suitable for adjacent ore bodies Download PDFInfo
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- CN109339784A CN109339784A CN201811366158.5A CN201811366158A CN109339784A CN 109339784 A CN109339784 A CN 109339784A CN 201811366158 A CN201811366158 A CN 201811366158A CN 109339784 A CN109339784 A CN 109339784A
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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
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Abstract
The invention relates to a separate mining combined caving method suitable for adjacent ore bodies, which is characterized in that adjacent thin and medium-thick ore bodies in a section or an ore block are divided into sections along the trend respectively, and are comprehensively stoped along the trend respectively, and overlying strata automatically fall or cave in along with the self-caving. The invention has the beneficial effects that: the thin and medium thick ore bodies of different ore species are separately mined and transported, the ore quality is high, the phenomena of 'mining rich and losing poor' and 'mining thick and losing thin' and the like can be avoided, and underground limited resources are fully utilized or comprehensively utilized. The stoping process is simple, multi-section simultaneous parallel operation is adopted, the stoping efficiency is high, and the stope production capacity is high.
Description
Technical field
The invention belongs to underground mine technical fields, are related to a kind of suitable for adopting joint Caving Method with Large Space time dividing for adjacent ore body
Adopt technology.
Background technique
On current domestic nonferrous mine, gold mine and polymetallic ore mountain, generally all there is adjacent uneasily mining orebody, especially
Nonferrous mine and gold mine are more.Being mainly characterized by nugget or stope for adjacent ore body, there is 2 ~ 3 or more adjacent mines
Body, ore body is shown at a distance of relatively closely, exploits wherein some ore body, will affect neighbouring ore body, and the such difficulty of back production is adopted adjacent ore body and existed
The problem of it is more, such as using mixed adopt when, sharply increase ore dilution rate, or make recovery rate in ore-dressing sharp fall；Using
When point adopting, easily there is " eat first and lose second ", " eat richness lose poor ", subterranean deposit resource is caused greatly to waste.Therefore, it studies or improves
Difficulty adopts the existing mining codes of adjacent ore body, determines reasonable orebody mining sequence, can further decrease mining cost and ore
Loss and dilution, all have very important significance to mining production safety and resource reclaim.
Summary of the invention
The object of the present invention is to provide a kind of suitable for adopting joint Caving Method with Large Space dividing for adjacent ore body, and it is particularly applicable in mine
There are thin, the middle thickness orebody of two layers of different mineral in block or stope, the former is generally 1.5 ~ 3.0m by thickness, and rear so the latter is generally
6.0~12m；Surrounding rock stability, especially upper disk surrounding rock stability is general poor or very poor, and limit exposure is generally in 60m2 or less
Gently inclined orebody.
Technical solution of the present invention: a kind of suitable for adopting joint Caving Method with Large Space, structure and parameter dividing for adjacent ore body: the stage is oblique
A length of 40~60m, within the stage, across pitch is divided into nugget, and nugget is 40~60m；In nugget, it is divided into point along orebody strike
Section, each segmentation plagioclase are 8.0~10m, and the studding in the stage is 8.0~10m；In block stoping, adjacent thin, middle thickness orebody
Allwork is carried out simultaneously along orebody trend, at the middle and upper levels the stope of the advanced lower layer's middle thickness orebody of mineral ore stope
20~30m；
Adopt quasi- with cutting: after the completion of adopting quasi- engineering, cutting groove is dug in the upper layer mineral ore side first in nugget, and by cutting groove
Across pitch carries out each segmentation parallel allwork simultaneously；
Actual mining: in back production, from each sublevel drilling gallery Drilling blasthole, blast hole depth is 4.0~10.0m, and across pitch
Layering ore caving is successively carried out, gallery width is 1.8~2.0m, adopts and falls ore using loader-and-carry dumper progress end ore removal；In order to reduce
Mine damage and dilution ore removal, loader-and-carry dumper should generally carry out in each slice drift, while parallel uniform ore removal.Lower layer's middle thickness orebody
Stoping method and its technique are identical as upper layer mineral ore.
Earth pres-sure control:, should be according to upper and lower level mineral ore and ore body and country rock stability (by ore body Pu Shi in Earth pres-sure control
Coefficient determines soundness), allow exposed area S divided by orebody thickness D by the limit, calculates and determine that inclined length of horizon and segmentation are oblique
It is long, prevent or avoid barren rock to be prematurely mixed into ore or generate the hidden danger of dead zone, produce and reduce to ensure safety mine damage with it is poor
Change.
Further, ore-rock (Protodyakonov coefficient built on the sandf≤ 2), top plate allows exposed area S in 10m3Within；It is medium steady
Gu ore-rock (Protodyakonov coefficient f=3 ~ 4), top plate allows exposed area S in 200m3Within；Firm ore-rock (Protodyakonov coefficientf=5 ~ 10),
Top plate allows exposed area S in 500m3Within；Very firm ore-rock (Protodyakonov coefficientf>=10 or more), top plate allows exposed area S
In 500~1000m3Within.
The significant technical characterstic of this method be it is adjacent thin in section or nugget, in middle thickness orebody, respectively across strike draw
At segmentation, and across pitch carries out allwork respectively, and overlying rock is with voluntarily inbreak or avalanche.
Beneficial effects of the present invention: 1) stoping work is simple, and takes more segmentation parallel operations simultaneously, and back production work efficiency is high,
Production capacity of mining field is big；(2) adopt that cut project amount small, back production work efficiency is high, and mining cost is low；(3) thin, the middle thickness orebody of different mineral
Take separative production and separative delivery, ore quality is high, can be to avoid " adopt richness lose poor " " adopt thickness lose thin " phenomena such as, obtains underground limited resources
It makes full use of or comprehensively utilizes；(4) all stoping operations are carried out in slice drift, can improve production safety condition.
Detailed description of the invention
Fig. 1 is to adopt joint Caving Method with Large Space schematic diagram dividing for adjacent ore body；
Fig. 2 is I-I direction view of Fig. 1；
The return aircourse 1-；The unstable upper disk of 2-；3- broken ore；The upper disk lean ore body of 4-；5- drilling drift；6- studding wears arteries and veins transport
Tunnel；The outer haulage drift of 7- arteries and veins；8- blasthole；9- lower wall middle thickness orebody；10- ore body interlayer.
Specific embodiment
Structure and parameter: inclined length of horizon is generally 40 ~ 60m.Within the stage, across pitch is divided into section or nugget, the former walks
It is generally 200 ~ 300m to length, the latter is generally 40 ~ 60m.In nugget or stope, across strike is divided into segmentation, and plagioclase is general
For 8.0 ~ 10m, mainly depending on upper and lower level mineral ore and orebody thickness.Stage studding is generally 8.0 ~ 10m.In nugget or stope
In back production, adjacent thin, middle thickness orebody across pitch carries out allwork simultaneously, but upper layer mineral ore stope it is general it is advanced under
Stope about 20 ~ 30m of layer middle thickness orebody, produces to ensure safety.
Adopt quasi- with cutting: after the completion of adopting quasi- engineering, cutting groove is dug in the upper layer mineral ore side first in nugget or stope,
And thus across pitch carries out each segmentation parallel allwork simultaneously.
Actual mining: in back production, from each sublevel drilling gallery Drilling blasthole, and across pitch successively carries out layering ore caving,
Its width is generally 1.8 ~ 2.0m.Blast hole depth is generally 4.0 ~ 10.0m.Adopt fall ore generally use loader-and-carry dumper carry out end go out
Mine.In order to reduce mine damage and dilution ore removal, should generally be carried out in each slice drift, while parallel uniform ore removal.It is thick in lower layer
The stoping method and its technique of ore body are identical as upper layer mineral ore.
Earth pres-sure control:, should be according to upper and lower level mineral ore and ore body and surrounding rock stability in Earth pres-sure control, comprehensive study is true
Determine inclined length of horizon and segmentation plagioclase, prevents or avoid barren rock to be prematurely mixed into ore or generate the hidden danger of dead zone, to ensure safety
Production and reduction mine damage and dilution.
Claims (2)
1. a kind of suitable for adopting joint Caving Method with Large Space, structure and parameter dividing for adjacent ore body: inclined length of horizon is 40~60m, in the stage
Interior, across pitch is divided into nugget, and nugget is 40~60m；In nugget, it is divided into segmentation along orebody strike, each segmentation plagioclase is 8.0
~10m, the studding in the stage are 8.0~10m；In block stoping, adjacent thin, middle thickness orebody carries out complete simultaneously along orebody trend
Face back production, at the middle and upper levels 20~30m of stope of the advanced lower layer's middle thickness orebody of mineral ore stope；
Adopt quasi- with cutting: after the completion of adopting quasi- engineering, cutting groove is dug in the upper layer mineral ore side first in nugget, and by cutting groove
Across pitch carries out each segmentation parallel allwork simultaneously；
Actual mining: in back production, from each sublevel drilling gallery Drilling blasthole, blast hole depth is 4.0~10.0m, and across pitch
Layering ore caving is successively carried out, gallery width is 1.8~2.0m, adopts and falls ore using loader-and-carry dumper progress end ore removal；In order to reduce
Mine damage and dilution ore removal, loader-and-carry dumper should generally carry out in each slice drift, while parallel uniform ore removal；Lower layer's middle thickness orebody
Stoping method and its technique are identical as upper layer mineral ore；
Earth pres-sure control: in Earth pres-sure control, should allow to expose by the limit according to upper and lower level mineral ore and ore body and country rock stability
Area S is calculated and is determined inclined length of horizon and segmentation plagioclase divided by orebody thickness D, prevent or avoid barren rock be prematurely mixed into ore or
The hidden danger of dead zone is generated, produces and reduce mine damage and dilution to ensure safety.
2. it is according to claim 1 a kind of suitable for adopting joint Caving Method with Large Space dividing for adjacent ore body, it is characterized in that: mine built on the sand
Rock, top plate allow exposed area S in 10m3Within；Moderately stable ore-rock, top plate allow exposed area S in 200m3Within；It is firm
Ore-rock, top plate allow exposed area S in 500m3Within；Very firm ore-rock, top plate allow exposed area S in 500~1000m3With
It is interior.
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| CN109339784A true CN109339784A (en) | 2019-02-15 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162690A (en) * | 1996-04-12 | 1997-10-22 | 崔正洙 | Underground mining process |
| CN102418526A (en) * | 2011-12-02 | 2012-04-18 | 瓮福（集团）有限责任公司 | High-sublevel subdivision mining method of moderately thick heavy-pitch waste-rock-containing interlayer phosphate orebody along strike |
| CN103104261A (en) * | 2013-02-18 | 2013-05-15 | 中南大学 | Multilayer ore body three dimension cooperation mining method |
| CN104213918A (en) * | 2014-08-06 | 2014-12-17 | 中钢集团马鞍山矿山研究院有限公司 | Multilayer gently-inclined extremely-narrow vein stoping blasting technology |
| CN105587318A (en) * | 2016-01-22 | 2016-05-18 | 长沙有色冶金设计研究院有限公司 | Filling mining method for continuous backstoping of gently inclined parallel medium thick ore body group |
| CN105952450A (en) * | 2016-06-20 | 2016-09-21 | 中钢集团马鞍山矿山研究院有限公司 | Novel method for collaboratively exploiting underground double stopes of underground mine |
| CN108005657A (en) * | 2017-11-27 | 2018-05-08 | 西北矿冶研究院 | Mining method for group/group of included stone-included steeply-inclined thin veins |
| CN108060924A (en) * | 2018-01-15 | 2018-05-22 | 中南大学 | High-dipping multi-seams thin deposit mechanization combinations for mining methods |
-
2018
- 2018-11-16 CN CN201811366158.5A patent/CN109339784B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162690A (en) * | 1996-04-12 | 1997-10-22 | 崔正洙 | Underground mining process |
| CN102418526A (en) * | 2011-12-02 | 2012-04-18 | 瓮福（集团）有限责任公司 | High-sublevel subdivision mining method of moderately thick heavy-pitch waste-rock-containing interlayer phosphate orebody along strike |
| CN103104261A (en) * | 2013-02-18 | 2013-05-15 | 中南大学 | Multilayer ore body three dimension cooperation mining method |
| CN104213918A (en) * | 2014-08-06 | 2014-12-17 | 中钢集团马鞍山矿山研究院有限公司 | Multilayer gently-inclined extremely-narrow vein stoping blasting technology |
| CN105587318A (en) * | 2016-01-22 | 2016-05-18 | 长沙有色冶金设计研究院有限公司 | Filling mining method for continuous backstoping of gently inclined parallel medium thick ore body group |
| CN105952450A (en) * | 2016-06-20 | 2016-09-21 | 中钢集团马鞍山矿山研究院有限公司 | Novel method for collaboratively exploiting underground double stopes of underground mine |
| CN108005657A (en) * | 2017-11-27 | 2018-05-08 | 西北矿冶研究院 | Mining method for group/group of included stone-included steeply-inclined thin veins |
| CN108060924A (en) * | 2018-01-15 | 2018-05-22 | 中南大学 | High-dipping multi-seams thin deposit mechanization combinations for mining methods |
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