CN105507904A - Strip mine foundation pit production method - Google Patents
Strip mine foundation pit production method Download PDFInfo
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- CN105507904A CN105507904A CN201610027869.4A CN201610027869A CN105507904A CN 105507904 A CN105507904 A CN 105507904A CN 201610027869 A CN201610027869 A CN 201610027869A CN 105507904 A CN105507904 A CN 105507904A
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- foundation ditch
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 claims description 20
- 238000005065 mining Methods 0.000 claims description 19
- 239000011435 rock Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000209202 Bromus secalinus Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/26—Methods of surface mining; Layouts therefor
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Abstract
The invention relates to a strip mine foundation pit production method. A stope is divided into a plurality of production areas distributed spirally from the center of the stope to the outer side, the boundary of each area except a foundation pit is composed of an outer side boundary body and an inner side boundary body, and the inner side boundary body of each back area and the outer side boundary body of the corresponding front area are partially overlapped; production is conducted on all the areas spirally from inside to outside, after the striping work in a certain area is completed, the corresponding boundary overlapping part is turned into the next adjacent area to conduct stripping work, and at the moment, production work is conducted in a certain area, and work is conducted in two and only the two areas in the stope. Production work and stripping work are independent, capital construction investment is reduced, and the stripping to production rate during production is balanced.
Description
Technical field
The invention belongs to mining technique field, be specifically related to a kind of capital construction of open pit mine and adopt foundation ditch to arrange exploitation method.
Background technology
When open pit mine is by conventional foundation ditch exploitation method, usually along ore body base plate or top board pick ditch, after bottom of trench meets equipment availability requirement, form four working pit edges by stope center to extending out side, between each horizontal bench, minimally working berm width and minimum inoperative square position width, to meet equipment availability requirement, when disclosing ore body of the same area, need to peel off more barren rock, capital works amount is large, and production stripping ratio is large; For accelerating foundation ditch drawdown, four work planes advance simultaneously, and need early stage the number of devices of input many, capital investment is high.
Summary of the invention
Arrange the problems such as the production stripping ratio caused is large, and capital investment is high for solving traditional foundation ditch, it is relatively independent with overburden operation that the present invention proposes a kind of mining, reduces capital investment, the opencut foundation ditch exploitation method of Balanced operating stripping ratio.
Technical scheme of the present invention is: a kind of opencut foundation ditch exploitation method, outwards stope is divided into some production zones distributed along spirality by stope center, except foundation ditch, the boundary in each region is made up of border inside an outer boundaries and, and the border, inner side in a rear region and the outer boundaries in last region partially overlap;
Each region is exploited from inside to outside along spirality, after in a certain region, stripping operation completes, proceeded in next region be adjacent by overlapping margins part and carry out overburden operation, meanwhile carry out mining in this certain region, have in stope and only have two region job.
Head adopts foundation ditch and is positioned at ore outcrop place or buries the most shallow place.
Except foundation ditch, the shape into similar crescent moon is overlooked in each region, successively overlaps mutually from inside to outside.
Overburden operation active line advances clockwise or counterclockwise around stope stripping operation line steering spindle, is formed fan-shaped.Overburden operation workline length is peak width.
Mining activity line advances round about by near adjacent stripping area side.
In stope, barren rock transport adopts the double helix hole line developing contrary around direction arranged in limit side, when the operation of expansion side is carried out in region, ensures have the spiral ramp of side to be through all the time.Initial and the ultimate position of double helix hole line is respectively the total main access in earth's surface and the following correct position place of ore body roof.
Boundary side slope angle α in region equals stope end of a period side slope angle.
The present invention is based on pit working line foundation ditch layout theory, a kind of balanced Production of Strip Mine stripping-to-ore ratio is provided to reduce the method for capital works amount, reduce the number of work plane when active line foundation ditch is arranged, divide based on stope band (region) formula, be with (region) exploitation, circulation propelling to reduce mine capital construction engineering quantity one by one, achieve in stope that to peel off with mining relatively independent simultaneously, the operation of stope lower mining gradually away from overburden operation district, top to reduce the mutual interference between two class engineerings, ensure the safety in production in stope, reduce habilitation.
Accompanying drawing explanation
Fig. 1 is opencut foundation ditch circulation strip-type (region) exploitation method layout schematic diagram of the present invention;
Fig. 2 is opencut foundation ditch circulation strip-type (region) exploitation method schematic sectional representation;
Fig. 3 is exploitation second band (region) stope floor map;
Fig. 4 is exploitation Article 3 band (region) stope floor map;
Fig. 5 is exploitation Article 4 band (region) stope floor map;
Fig. 6 is exploitation Article 4 band (region) stope floor map;
Fig. 7 is line developing schematic diagram in double helix hole in stope;
In figure: 1, first band (foundation ditch), 2, second band (region), 3, Article 3 band (region), 4, Article 4 band (region), 5, Article 5 band (region), 6, stope end of a period earth's surface boundary, 7, first band (region) boundary, 8, second band (region) boundary, 9, stope earth's surface, 10, ore body outline line, 11, stripping bench, 12, overburden operation active line direction of propulsion, 13, mining step, 14, mining active line direction of propulsion, 15, dragline stripper active line steering spindle, 16, the total main access in stope earth's surface, 17, line ultimate position, double helix hole, 18, side spiral ramp, 19, opposite side spiral ramp.
Detailed description of the invention
First the describing mode used in the present invention is set forth.In the present invention, each band (region) adopts and counts successively from inside to outside, be respectively 1,2 ... n ... (label 1 represents foundation ditch), afterwards (under) band relatively before (on) band, the two sequence number can count n+1 and n respectively.If a part for a band (region) is positioned at part outside (the overlapping place of left and right sides as label 3 and 2) of another band (region), then the numbering of this band (region) is larger than the numbering of this another band (region).The boundary of definition band (region) is the border in this band (region).
As shown in Fig. 1 ~ 7, it is opencut foundation ditch circulation strip-type (region) exploitation method of the present invention's detailed description of the invention.In stope boundary, capital construction adopts foundation ditch to arrange, head adopts foundation ditch and is positioned at ore outcrop place or buries the most shallow place.Outwards stope is divided into some exploitation bands (region) (number in the figure is 1 ~ 5) by stope center (being also foundation ditch center).Band (region) boundary (as label 8) of a rear band (region) and band (region) boundary (as label 7) of last band (region) partially overlap to reduce production stripping ratio.From top view, band (region) forms the shape of similar crescent, and band (region) is nested layer by layer.The boundary of each band (region) is made up of border inside an outer boundaries and, forms similar crescent.The border, inner side of a rear band (region) and the outer boundaries of last band (region) partially overlap (for foundation ditch, its outer boundaries is exactly border, inner side, is a closed curve around stope center).Like this, each band (region) is order 1,2 by number ... n, outwards launch twist, adjacent (referring to that numbering is upper adjacent) band (region) has one section of public boundary, and mining sequence is also carried out along spirality from inside to outside continuously.
In stope mining and overburden operation relatively independent, after the interior stripping operation of a upper band (region) [counting n] completes, namely after capital construction has been peeled off, dragline stripper proceeds in next band (region) [counting n+1] and carries out overburden operation, mining is carried out in a upper band (region), at the end of next interior stripping operation is basic, the interior mining of a upper band (region) completes substantially, mining power shovel proceeds to n+1 band (region) operation, n+1 band (region) interior power shovel proceeds in n+2 band and starts to carry out stripping operation simultaneously, move in circles until the mine underproduction has been adopted.Ensure have in stope and only have the operation of two bands (region).
Except foundation ditch, overburden operation active line direction of propulsion 12 is fan-shaped, advances clockwise or counterclockwise around stope stripping operation line steering spindle 15, is advanced to opposite side by the interim boundary in band (region) side, within mine whole campaign, dragline stripper only has a working pit edge.Power shovel workline length is band (region) width B
t.Band (region) width B
tmove towards length of curve by band (region) interior ore deposit amount, ore covered depth, band (region), mining power shovel ability, dragline stripper ability four factors determine and must not be less than power shovel to stand horizontal digging radius R
wp.
Mining activity line is longitudinally arranged, is advanced to a direction by stope center.Shown in figure, direction of propulsion 14 by near adjacent ribbons (region) stripping area side round about (namely along stripping operation line steering spindle 15 to deviating from side, overburden operation region) advance, to reduce the Rolling Stone that produces in the slungshot that produces and manufacturing process when bursting work is peeled off on top to the impact of lower mining operation.Because dragline stripper active line steering spindle 15 alternately occurs in stope both sides, therefore, stope work operations line direction of propulsion cycle alternation changes.
Band (region) boundary only establishes safety and cleaning platform, ensures steep wall mining effect.
During for ensureing band (region) operation, the safety of hauling operation in stope is with unimpeded, and in stope, barren rock transport adopts the line developing of double helix hole, and limit side arranges double helix hole line developing 18,19, and this double helix cheats the contrary around direction of line.When next band of stope (region) carries out stripping expansion side operation, side spiral ramp in last band (region) can interrupt, now opposite side spiral ramp undertakes the transport task in last band (region), meanwhile, the spiral ramp that formation one is new in a rear band (region).When band (region) carries out the operation of expansion side, ensure that the spiral ramp transportation system having side is all the time through, ensure the transportation safety of two interior materials of operation band (region).Initial and the ultimate position of double helix hole line is respectively the total main access in earth's surface 16 and (is determined by orebody thickness with the following correct position place 17 of ore body roof, and be no more than 1/3 of orebody thickness), exploitation that stope is with one by one (region) is until end of a period boundary 6.
End side of band (region) boundary place inscape helps inscape identical with stope end of a period boundary end, and therefore, band (region) boundary side slope angle α equals stope end of a period side slope angle.
Opencut foundation ditch circulation strip-type (region) exploitation method of the present invention, is applicable to dark recessed outdoor metallic ore, adopts the mine of shovel and truck technology, is best suited for big thick ore body, and slanting angle of ore body change is little, the mine that overlying rock is thick.Capital construction can be reduced and peel off engineering quantity, reduce initial investment, realize ore and overburden separative production and separative delivery, ensure mine safety High-efficient Production, there is practicality widely.
Claims (9)
1. an opencut foundation ditch exploitation method, is characterized in that:
Outwards stope is divided into some production zones distributed along spirality by stope center, except foundation ditch, the boundary in each region is made up of border inside an outer boundaries and, and the border, inner side in a rear region and the outer boundaries in last region partially overlap;
Each region is exploited from inside to outside along spirality, after in a certain region, stripping operation completes, proceeded in next region be adjacent by overlapping margins part and carry out overburden operation, meanwhile carry out mining in this certain region, have in stope and only have two region job.
2. opencut foundation ditch exploitation method according to claim 1, is characterized in that: head adopts foundation ditch and is positioned at ore outcrop place or buries the most shallow place.
3. opencut foundation ditch exploitation method according to claim 1, is characterized in that: except foundation ditch, the shape into similar crescent moon is overlooked in each region, successively overlaps mutually from inside to outside.
4. opencut foundation ditch exploitation method according to claim 1, is characterized in that: overburden operation active line advances clockwise or counterclockwise around stope stripping operation line steering spindle, is formed fan-shaped.
5. the opencut foundation ditch exploitation method according to claim 1 or 4, is characterized in that: overburden operation workline length is peak width.
6. the opencut foundation ditch exploitation method according to claim 1 or 4, is characterized in that: mining activity line advances round about by near adjacent stripping area side.
7. opencut foundation ditch exploitation method according to claim 1, it is characterized in that: in stope, barren rock transport adopts the double helix hole line developing contrary around direction arranged in limit side, when the operation of expansion side is carried out in region, ensure have the spiral ramp of side to be through all the time.
8. opencut foundation ditch exploitation method according to claim 7, is characterized in that: the initial and ultimate position of double helix hole line is respectively the total main access in earth's surface and the following correct position place of ore body roof.
9. opencut foundation ditch exploitation method according to claim 1, is characterized in that: region boundary side slope angle α equals stope end of a period side slope angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027869.4A CN105507904B (en) | 2016-01-15 | 2016-01-15 | A kind of opencut foundation ditch recovery method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610027869.4A CN105507904B (en) | 2016-01-15 | 2016-01-15 | A kind of opencut foundation ditch recovery method |
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| CN105507904A true CN105507904A (en) | 2016-04-20 |
| CN105507904B CN105507904B (en) | 2017-09-01 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654233A (en) * | 2017-08-25 | 2018-02-02 | 张忠成 | Stay beam strip mining transformation technique in a kind of narrow exploiting field |
| CN110285731A (en) * | 2019-05-20 | 2019-09-27 | 湖北三鑫金铜股份有限公司 | A kind of determination method of opencut main access segment blast Hole pattern parameters |
| CN114033380A (en) * | 2021-10-18 | 2022-02-11 | 辽宁工程技术大学 | Parallel double-working-line reverse-propulsion inclined coal seam strip mine mining method |
Citations (5)
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| RU2353769C2 (en) * | 2007-05-18 | 2009-04-27 | Институт горного дела Уральского отделения Российской академии наук | Pit border |
| CN102536245A (en) * | 2012-03-02 | 2012-07-04 | 赵文奎 | Method for calculating bottom width and mining depth of open-pit mining for large and thick ore body |
| CN102644464A (en) * | 2012-04-12 | 2012-08-22 | 东北大学 | Constructing method for mining embedded artificial boundary ore pillar from open-pit to underground mine |
| CN102966355A (en) * | 2012-12-06 | 2013-03-13 | 马钢集团设计研究院有限责任公司 | Method for creating internal dumping conditions of strip mine |
| CN105114081A (en) * | 2015-09-29 | 2015-12-02 | 长沙有色冶金设计研究院有限公司 | Mining method of open-pit mine |
-
2016
- 2016-01-15 CN CN201610027869.4A patent/CN105507904B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2353769C2 (en) * | 2007-05-18 | 2009-04-27 | Институт горного дела Уральского отделения Российской академии наук | Pit border |
| CN102536245A (en) * | 2012-03-02 | 2012-07-04 | 赵文奎 | Method for calculating bottom width and mining depth of open-pit mining for large and thick ore body |
| CN102644464A (en) * | 2012-04-12 | 2012-08-22 | 东北大学 | Constructing method for mining embedded artificial boundary ore pillar from open-pit to underground mine |
| CN102966355A (en) * | 2012-12-06 | 2013-03-13 | 马钢集团设计研究院有限责任公司 | Method for creating internal dumping conditions of strip mine |
| CN105114081A (en) * | 2015-09-29 | 2015-12-02 | 长沙有色冶金设计研究院有限公司 | Mining method of open-pit mine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654233A (en) * | 2017-08-25 | 2018-02-02 | 张忠成 | Stay beam strip mining transformation technique in a kind of narrow exploiting field |
| CN110285731A (en) * | 2019-05-20 | 2019-09-27 | 湖北三鑫金铜股份有限公司 | A kind of determination method of opencut main access segment blast Hole pattern parameters |
| CN114033380A (en) * | 2021-10-18 | 2022-02-11 | 辽宁工程技术大学 | Parallel double-working-line reverse-propulsion inclined coal seam strip mine mining method |
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| CN105507904B (en) | 2017-09-01 |
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