CN109339792A - A method of delineation surface mine stepwise mining limit - Google Patents
A method of delineation surface mine stepwise mining limit Download PDFInfo
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- CN109339792A CN109339792A CN201811509909.4A CN201811509909A CN109339792A CN 109339792 A CN109339792 A CN 109339792A CN 201811509909 A CN201811509909 A CN 201811509909A CN 109339792 A CN109339792 A CN 109339792A
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- 238000005065 mining Methods 0.000 title claims abstract description 192
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000009466 transformation Effects 0.000 claims abstract description 23
- 238000005516 engineering process Methods 0.000 claims abstract description 6
- 238000004321 preservation Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 230000007704 transition Effects 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- E21C41/30—Methods of surface mining; Layouts therefor for ores, e.g. mining placers
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Abstract
The invention discloses a kind of methods for drawing a circle to approve surface mine stepwise mining limit to determine Steep Wall Mining Technology parameter according to the stope structure parameter of strip mining transformation final mining area (1), calculates steep wall mining working slope angle；In strip mining transformation final mining area (1), using on steep wall mining disk working slope angle (5) as stepwise mining limit (4) upper disk slope angle, using steep wall mining lower wall working slope angle (6) as the lower wall slope angle of stepwise mining limit (4).There are two kinds of situations for the stepwise mining limit (4) of delineation: i.e. stepwise mining limit (4) and strip mining transformation final mining area (1) is non-intersecting and intersect.The stepwise mining limit drawn a circle to approve using the present invention, fitting mining production is practical, and avoiding traditional mining by stages, there are the risks of underproduction transition or halt production transition, have ensured the continuity of mining production；The economic benefit of stepwise mining limit is accurately calculated convenient for designer and mine management personnel.
Description
Technical field
The invention belongs to open-pit mining techniques, and in particular to a kind of technique for delineating of open-pit mining realm.
Background technique
The delineation of open-pit mining realm is important one of the economic indicator of opencut, directly influences the economic benefit in mine,
Boundary is excessive to will lead to cost raising, the too small waste that will lead to resource of boundary.
Currently, pit limit stripping ratio is widely used and is shelled less than economical rationality in the design that the open pit boundary in China is drawn a circle to approve
The principle of ratio is adopted to determine outskirts of mine.Need to do following work: determine opencut minimum bottom width, opencut ultimate pit slope angle,
Determine opencast mining depth, draw opencut bottom perimeter, draw the final plan view of opencast mining etc., wherein determining exploitation
Depth is the core of these work.
In opencast final mining area, several intermediate boundaries are divided in the plane or in depth and are successively opened
It adopts, is mining by stages.With whole boundary exploitation compared with, mining by stages have reduce opencut initial investment, accelerate capital construction of open pit mine,
It recoups capital outlay early, improve the advantages of mine whole economic efficiency.
Currently, the slope angle of stepwise mining limit takes strip mining transformation ultimate pit slope angle when delineation stepwise mining limit.In mine
In the actual production process on mountain, in the floor level of not up to stepwise mining limit, upper level has started to expand side, into expansion
The transitional period is helped, because excavating plant working slope angle is much smaller than the slope angle of stepwise mining limit, if forming stepwise mining limit
Carry out afterwards and expand side operation, the predicament of halt production transition or underproduction transition will be caused.Therefore, stepwise mining limit can't produce
Occur in journey, is only a virtual imaginary boundary.
Stepwise mining limit slope angle cannot reflect the true shape of Production of Strip Mine using strip mining transformation ultimate pit slope angle
State, and there are the Expansion and transition phase, the organization management of Expansion and transition phase is not good at that halt production transition or underproduction transition will be caused；Together
When, for designer and mine management personnel, since stepwise mining limit is never formed, it cannot accurately calculate mining by stages border
The economic benefit on boundary.
Currently, the research and practice of domestic existing surface mine mining by stages, such as " mining industry flash report " the 6th phase in 2005 deliver
The research of practice " large-scale outdoors iron ore mining by stages " text in, it is real using the production of bench group stripping rock for mining by stages
Border situation, has inquired into and has calculated blocked-out ore reserve using depth method, and reinforcing adopts stripping management, quantifies mine engineering deepening speed, instruct mine
Mountain production.But the research does not also conduct a research to stepwise mining limit slope angle and strip mining transformation ultimate pit slope angle.
Summary of the invention
The purpose of the present invention is to drawbacks described above existing for current delineation stepwise mining limit, and provide a kind of delineation
The method of surface mine stepwise mining limit eliminates the Expansion and transition phase to reflect the time of day of mining production, is convenient for designer
Member and mine management personnel accurately calculate the economic benefit of stepwise mining limit.
Above-mentioned purpose to realize the present invention, the present invention it is a kind of draw a circle to approve surface mine stepwise mining limit method use with
Lower step is realized:
1) steep wall mining working slope angle is calculated
According to the stope structure parameter of strip mining transformation final mining area, Steep Wall Mining Technology parameter is determined, calculate steep wall mining
Working slope angle；Wherein having an opencast mining of the stope structure parameter of final mining area includes: step height, ultimate pit slope angle, step slope
Face angle, cleans berm width, shipping platform width at safety platform width；Steep Wall Mining Technology parameter include: compound table order,
Number of steps, interim inoperative berm width, scraper one cycle push width, the horizontal fltting speed of active line in one group.
2) stepwise mining limit is drawn a circle to approve
In strip mining transformation final mining area, using steep wall mining working slope angle as the slope angle of stepwise mining limit；With
Pit limit stripping ratio is principle no more than economical well spacing, determines stepwise mining limit；According to the practical preservation situation of ore body, circle
There are two kinds of situations for fixed stepwise mining limit:
1. stepwise mining limit and strip mining transformation final mining area are non-intersecting, the slope angle of stepwise mining limit is steep wall mining
Working slope angle；
2. stepwise mining limit intersects with strip mining transformation final mining area, the side slope of stepwise mining limit is formed by two sections, on
Portion is the upper slope for having an opencast mining of final mining area, and lower part is steep wall mining working pit edge slope, and the boundary of delineation is mining by stages
Boundary；At this point, stepwise mining limit slope angle is greater than steep wall mining working slope angle, it is less than strip mining transformation ultimate pit slope angle.
The steep wall mining working slope angle is the larger angle in the implementable situation of steep wall mining, under normal circumstances,
Control is between 26 °~38 ° ranges.
A kind of method for drawing a circle to approve surface mine stepwise mining limit of the present invention after the above technical solution is adopted, has with following
Beneficial effect:
(1) stepwise mining limit is drawn a circle to approve using steep wall mining working slope angle as slope angle, stepwise mining limit is outdoor
The interim open-pit limit of one of necessary being during mining production；
(2) the Expansion and transition phase is eliminated, avoiding traditional mining by stages, there are the risks of underproduction transition or halt production transition, protect
The continuity of mining production is hindered；
(3) economic benefit of stepwise mining limit is accurately calculated convenient for designer and mine management personnel.
Detailed description of the invention
Fig. 1 is a kind of method for drawing a circle to approve surface mine stepwise mining limit of the present invention in stepwise mining limit side slope and final
Surface mine stepwise mining limit schematic cross section in the non-intersecting situation of boundary side slope；
Fig. 2 is a kind of method for drawing a circle to approve surface mine stepwise mining limit of the present invention in stepwise mining limit side slope and final
Surface mine stepwise mining limit schematic cross section in the case of the intersection of boundary side slope.
Appended drawing reference are as follows: 1- has an opencast mining of final mining area；2,3- has an opencast mining of ultimate pit slope angle, wherein in 2- strip mining transformation
Disk ultimate pit slope angle, 3- have an opencast mining of lower wall ultimate pit slope angle；4- stepwise mining limit；5,6- steep wall mining working slope angle,
Wherein disk working slope angle on 5- steep wall mining, 6- steep wall mining lower wall working slope angle.
Specific embodiment
To further describe the present invention, a kind of delineation surface mine of the present invention is opened by stages with reference to the accompanying drawings and examples
The method for adopting boundary is described in further details.
A kind of method for drawing a circle to approve surface mine stepwise mining limit of the present invention shown in FIG. 1 stepwise mining limit side slope with
Surface mine stepwise mining limit schematic cross section in the non-intersecting situation of final mining area side slope is simultaneously found out, this hair in conjunction with Fig. 2
There are two kinds of situations: 1. stepwise mining limit side slope and final mining area for a kind of bright method for drawing a circle to approve surface mine stepwise mining limit
Side slope is non-intersecting；2. stepwise mining limit side slope intersects with final mining area side slope.
A kind of method for drawing a circle to approve surface mine stepwise mining limit of the present invention specifically uses following steps:
1) steep wall mining working slope angle is calculated
According to stope structure parameter --- step height, ultimate pit slope angle, the bench face of strip mining transformation final mining area 1
Angle, cleans berm width, shipping platform width at safety platform width, determines Steep Wall Mining Technology parameter --- compound table order,
Number of steps, interim inoperative berm width, scraper one cycle push width, the horizontal fltting speed of active line in one group, meter
Calculate steep wall mining working slope angle；The steep wall mining working slope angle is the relatively big angle in the implementable situation of steep wall mining
Degree controls between 26 °~38 ° ranges.
2) stepwise mining limit is drawn a circle to approve
In strip mining transformation final mining area 1, using steep wall mining working slope angle as the slope angle of stepwise mining limit 4,
That is: disk working slope angle 5 is worked as the upper disk slope angle of stepwise mining limit 4 with steep wall mining lower wall using on steep wall mining
Help lower wall slope angle of the slope angle 6 as stepwise mining limit 4；Using pit limit stripping ratio no more than economical well spacing as principle,
Determine stepwise mining limit 4；According to the practical preservation situation of ore body, there are two kinds of situations for the stepwise mining limit 4 of delineation:
1. stepwise mining limit 4 and strip mining transformation final mining area 1 are non-intersecting, the slope angle of stepwise mining limit 4 is steep side
Working slope angle is exploited, i.e.,；The upper disk slope angle of stepwise mining limit 4 is disk working slope angle 5 on steep wall mining, mining by stages
The lower wall slope angle of boundary 4 is steep wall mining lower wall working slope angle 6；
2. stepwise mining limit 4 intersects with strip mining transformation final mining area 1, the side slope of stepwise mining limit 4 is formed by two sections,
Top is the upper slope for having an opencast mining of final mining area 1, and lower part is steep wall mining working pit edge slope, and the boundary of delineation is as opened by stages
Adopt boundary；At this time: disk slope angle is greater than disk working slope angle 5 on steep wall mining on stepwise mining limit, is less than in strip mining transformation
Disk ultimate pit slope angle 2；Stepwise mining limit lower wall slope angle is greater than steep wall mining lower wall working slope angle 6, is less than strip mining transformation
Lower wall ultimate pit slope angle 3.
Claims (3)
1. a kind of method for drawing a circle to approve surface mine stepwise mining limit, it is characterised in that use following steps:
1) steep wall mining working slope angle is calculated
According to the stope structure parameter of strip mining transformation final mining area (1), Steep Wall Mining Technology parameter is determined, calculate steep wall mining work
Make side slope angle；
2) stepwise mining limit is drawn a circle to approve
In strip mining transformation final mining area (1), disk working slope angle (5) is as stepwise mining limit (4) using on steep wall mining
Upper disk slope angle, using steep wall mining lower wall working slope angle (6) as the lower wall slope angle of stepwise mining limit (4)；With boundary
Stripping-to-ore ratio is principle no more than economical well spacing, determines stepwise mining limit (4)；According to the practical preservation situation of ore body, circle
There are two kinds of situations for fixed stepwise mining limit (4):
1. stepwise mining limit (4) and strip mining transformation final mining area (1) are non-intersecting, the upper disk slope angle of stepwise mining limit (4)
For disk working slope angle (5) on steep wall mining, the lower wall slope angle of stepwise mining limit (4) is steep wall mining lower wall working pit edge slope
Angle (6)；
2. stepwise mining limit (4) intersects with strip mining transformation final mining area (1), the side slope of stepwise mining limit (4) is by two sections of groups
At top is the upper slope for having an opencast mining of final mining area (1), and lower part is steep wall mining working pit edge slope, and the boundary of delineation is
Stepwise mining limit；At this time: disk slope angle is greater than disk working slope angle (5) on steep wall mining on stepwise mining limit, is less than dew
It exploits upper disk ultimate pit slope angle (2)；Stepwise mining limit lower wall slope angle is greater than steep wall mining lower wall working slope angle (6),
Less than strip mining transformation lower wall ultimate pit slope angle (3).
2. a kind of method for drawing a circle to approve surface mine stepwise mining limit as described in claim 1, it is characterised in that: the dew
Stope structure parameter of its exploitation final mining area (1) includes: that step height, ultimate pit slope angle, bank slope, security platform are wide
Degree cleans berm width, shipping platform width；The Steep Wall Mining Technology parameter includes: compound table order, step in one group
Several, interim inoperative berm width, scraper one cycle push width, the horizontal fltting speed of active line.
3. a kind of method for drawing a circle to approve surface mine stepwise mining limit as claimed in claim 1 or 2, it is characterised in that: described
Steep wall mining working slope angle be the implementable situation of steep wall mining under larger angle, control between 26 °~38 ° ranges.
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| CN201811509909.4A CN109339792B (en) | 2018-12-11 | 2018-12-11 | Method for defining stage mining boundary of open-pit mine |
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| CN201811509909.4A CN109339792B (en) | 2018-12-11 | 2018-12-11 | Method for defining stage mining boundary of open-pit mine |
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| CN110175415A (en) * | 2019-05-30 | 2019-08-27 | 中铝国际工程股份有限公司 | A kind of method of determining opencut earth's surface boundary |
| CN112049639A (en) * | 2020-08-04 | 2020-12-08 | 中冶北方（大连）工程技术有限公司 | Method for reserving steep wall mining platform |
| CN112053031A (en) * | 2020-08-04 | 2020-12-08 | 中冶北方（大连）工程技术有限公司 | Method for determining slope-expanding mining boundary of deep open pit mine |
| CN114687744A (en) * | 2022-04-12 | 2022-07-01 | 中铁十九局集团矿业投资有限公司 | Soft structure surface mine multi-layer mining method and system |
| CN116542031A (en) * | 2023-04-21 | 2023-08-04 | 东北大学 | Slope angle determining method and system for strip mine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110175415A (en) * | 2019-05-30 | 2019-08-27 | 中铝国际工程股份有限公司 | A kind of method of determining opencut earth's surface boundary |
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| CN112049639A (en) * | 2020-08-04 | 2020-12-08 | 中冶北方（大连）工程技术有限公司 | Method for reserving steep wall mining platform |
| CN112053031A (en) * | 2020-08-04 | 2020-12-08 | 中冶北方（大连）工程技术有限公司 | Method for determining slope-expanding mining boundary of deep open pit mine |
| CN114687744A (en) * | 2022-04-12 | 2022-07-01 | 中铁十九局集团矿业投资有限公司 | Soft structure surface mine multi-layer mining method and system |
| CN116542031A (en) * | 2023-04-21 | 2023-08-04 | 东北大学 | Slope angle determining method and system for strip mine |
| CN116542031B (en) * | 2023-04-21 | 2024-01-26 | 东北大学 | Slope angle determining method and system for strip mine |
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Address after: 243000 Xitang Road, Ma'anshan Economic Development Zone, Anhui, No. 666 Patentee after: MAANSHAN Mine Research Institute Co.,Ltd. Address before: 243000 Xitang Road, Ma'anshan Economic Development Zone, Anhui, No. 666 Patentee before: SINOSTEEL MAANSHAN INSTITUTE OF MINING RESEARCH Co.,Ltd. |