CN105114081A - Mining method of open-pit mine - Google Patents

Mining method of open-pit mine Download PDF

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Publication number
CN105114081A
CN105114081A CN201510630476.8A CN201510630476A CN105114081A CN 105114081 A CN105114081 A CN 105114081A CN 201510630476 A CN201510630476 A CN 201510630476A CN 105114081 A CN105114081 A CN 105114081A
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mining
band
exploitation
stripping
opencut
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CN201510630476.8A
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CN105114081B (en
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苗明义
昌珺
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CINF Engineering Corp Ltd
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CINF Engineering Corp Ltd
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Abstract

The invention relates to a mining method of an open-pit mine. The mining method includes that a mine body in a final boundary range is divided into a plurality of strips along an advancing direction of a stope working slope, and mining is performed strip by strip; only a safety platform and a sweeping platform are arranged in an advancing direction of a vertical working slope; only two strips are operated constantly in the process of advancing of the working slope, mining operation is performed in a former strip, and stripping operation is performed in a later strip; after mining and digging of the former strip of the mine body are completed, stripping work of the later strip is finished just then, stripping equipment turns to a next strip for stripping, and so on. By the mining method, slope angle of the working slope is increased, stripping peak at the early stage of mine production is reduced effectively, equipment waste caused by changing of production stripping-mining ratio is avoided, the production stripping-mining ratio is balanced, stability of mine production is guaranteed, and good economic benefit is realized.

Description

A kind of exploitation method of opencut
Technical field
The invention belongs to mining technique field, be specifically related to a kind of exploitation method of opencut.
Background technology
In the middle of opencast mining process, often be divided into the exploitation of some dasses along being parallel to step direction, in order to meet the job requirements of digging, haulage device, working berm need have one fixed width, this just causes working slope angle to slow down, capital construction phase overburden amount is large, and the stripping-to-ore ratio between the normal production period of mine sharply declines, and Original equipment investment is high.Working slope angle is too small, causes the low of the waste of up-front investment and whole mine economic profit.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of raising working slope angle, Balanced operating stripping ratio, reduces capital investment, improves the opencast mining method of mine whole economic efficiency.
Technical scheme of the present invention is: a kind of exploitation method of opencut, along stope working pit edge direction of propulsion, is some bands, by Striping noise by the ore body division within the scope of final mining area; Vertical operation side direction of propulsion is only established security platform and cleaning platform; Remained in working pit edge progradation and only had two band operations, and last band only carries out mining, a rear band only carries out overburden operation, after the digging of last band ore body completes, a rear band stripping operation terminates just, and peel-off device proceeds to next band and peels off, and moves in circles.
Peel-off device work plane lateral arrangement in band, help to be advanced into another side by a side and help, stripping bench is relieved oedema or abdominal distension through diuresis or purgation to put down and is disclosed, and after in band, stripping operation completes, in this band, mining step starts operation, and peel-off device enters next band work simultaneously.
Laterally measured by ore deposit in band, mining power shovel ability, dragline stripper ability three factors determine and must not be less than power shovel to stand horizontal digging radius by exploitation length for peel-off device.
Further, when work plane peel-off device quantity is greater than one, adopt tracing type exploitation, each equipment room keeps certain tracking distance, after equipment completes the exploitation of a level, proceeds to next and treats mining level work, move in circles, by horizon mining to end side boundary.
In band, mining stair working line is longitudinally arranged, retains least bench width between adjacent step.
In this method, to be that stope final mining area is stable help slope angle to the angle of band top boundary and bottom boundary line.
Top overburden transports stope working pit edge shiftable ramp, and through end side, semifixed hole line transports outer dump to, and bottom Ore Transportation is walked non working slope permanent ramp and transported ore dressing plant or ore stockyard to.
The two strip-type exploitation method of opencut of the present invention is that a kind of division based on strip-type is adopted, shelled relatively independent exploitation method.Theoretical by side exploitation based on opencut, established (except the horizontal working region of power shovel, all the other sections only establish security platform and cleaning platform) by staying of working pit edge inoperative section step, reduce square position width, improve working slope angle, avoid the investment aggravation because advance stripping causes.Mining and overburden operation carry out respectively in two banded zones, and two class production operations can not be had an impact each other.The method effectively reduces the stripping flood peak at mining production initial stage, avoids production stripping ratio and changes the equipment waste caused, and balanced production stripping ratio, ensure that the stable of the production in mine, realize good economic benefit.It is large that the present invention is best suited for orebody thickness, buries dark, adopt the surface mine of shovel and truck technology.
Accompanying drawing explanation
Fig. 1 is of the present invention pair of strip-type exploitation layout schematic diagram.
Fig. 2 is the A-A place stope structure sectional drawing of Fig. 1.
Fig. 3 is next adjacent ribbons stope layout schematic diagram of exploitation.
The A-A place stope structure sectional drawing of Fig. 4 bitmap 3.
In figure: 1, band top boundary, 2, stope bottom boundary, 3, security platform, 4, cleaning platform, 5, stripping bench, 6, mining step, 7, stope end side, 8, stope divides band, 9, power shovel active line, 10, working pit edge direction of propulsion.
Detailed description of the invention
As shown in Fig. 1 ~ 4, opencast mining method of the present invention, is divided into some exploitation bands 8 along stope working pit edge direction of propulsion by stope.End according to stope and help slope platform inscape, when carrying out Striping noise, power shovel active line 9 lateral arrangement, only establish security platform 3 and cleaning platform 4 perpendicular to working pit edge direction of propulsion 10, width and stope are ended and are helped the corresponding inscape in slope consistent.Working berm is the upper surface of stripping bench 5 and mining step 6.
Dragline stripper work plane lateral arrangement in band, help 7 to be advanced into another side by a side and help, power shovel zig-zag type is out of shape, and laterally exploitation length is strip width B m, stripping bench 5 is relieved oedema or abdominal distension through diuresis or purgation to put down and is disclosed, and after in band, stripping operation completes, in this band, mining step 6 starts operation, and meanwhile, dragline stripper enters next band work.Power shovel workline length and strip width B m, it is measured by ore deposit in band, mining power shovel ability, dragline stripper ability three factors are determined and must not be less than power shovel and to stand horizontal digging radius R wp.
When work plane dragline stripper quantity is greater than one, employing tracing type is exploited, certain tracking distance is kept between each power shovel, after power shovel completes the exploitation of a level, proceed to next and treat mining level work, move in circles, by horizon mining to end side boundary, to this band, all stripping bench exploitations terminate, and peel-off device proceeds to next band work.
In a upper band, mining step 6 active line is longitudinally arranged, retains least bench width B between adjacent step min.When in a upper band, mining is complete, next horizontal stripping bench completes mining work just.Move in circles, until stope final mining area.
The angle α of the plane going up a stripping bench bench toe and the most next stripping bench bench toe through band most and the horizontal plane angle of band top boundary 1 and bottom boundary 2 line (also i.e.) equals stope and ends and help slope angle (stope final mining area stablize helps slope angle).In the inventive method, band boundary in early stage side slope angle equals stope end of a period side slope angle α, improves working slope angle than prior art.
In addition, top overburden transports stope working pit edge shiftable ramp, and through end side, semifixed hole line transports outer dump to, and bottom Ore Transportation is walked non working slope permanent ramp and transported ore dressing plant or ore stockyard to.

Claims (7)

1. an exploitation method for opencut, it is characterized in that along stope working pit edge direction of propulsion, is some bands by the ore body division within the scope of final mining area, by Striping noise; Vertical operation side direction of propulsion is only established security platform and cleaning platform; Remained in working pit edge progradation and only had two band operations, and last band only carries out mining, a rear band only carries out overburden operation, after the digging of last band ore body completes, a rear band stripping operation terminates just, and peel-off device proceeds to next band and peels off, and moves in circles.
2. the exploitation method of opencut according to claim 1, it is characterized in that peel-off device work plane lateral arrangement in band, help to be advanced into another side by a side to help, stripping bench is relieved oedema or abdominal distension through diuresis or purgation to put down and is disclosed, after in band, stripping operation completes, in this band, mining step starts operation, and peel-off device enters next band work simultaneously.
3. the exploitation method of opencut according to claim 2, is characterized in that laterally measured by ore deposit in band, mining power shovel ability, dragline stripper ability three factors determine and must not be less than power shovel to stand horizontal digging radius by exploitation length for peel-off device.
4. the exploitation method of opencut according to claim 2, when it is characterized in that work plane peel-off device quantity is greater than one, employing tracing type is exploited, each equipment room keeps certain tracking distance, after equipment completes the exploitation of a level, proceed to next and treat mining level work, move in circles, by horizon mining to end side boundary.
5., according to the exploitation method of the opencut one of claim 1 ~ 4 Suo Shu, it is characterized in that in band, mining stair working line is longitudinally arranged, retains least bench width between adjacent step.
6., according to the exploitation method of the opencut one of claim 1 ~ 4 Suo Shu, it is characterized in that the angle of band top boundary and bottom boundary line is that stope final mining area is stable and helps slope angle.
7. according to the exploitation method of the opencut one of claim 1 ~ 4 Suo Shu, it is characterized in that top overburden transports stope working pit edge shiftable ramp, through end side, semifixed hole line transports outer dump to, and bottom Ore Transportation is walked non working slope permanent ramp and transported ore dressing plant or ore stockyard to.
CN201510630476.8A 2015-09-29 2015-09-29 Mining method of open-pit mine Active CN105114081B (en)

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CN105114081B CN105114081B (en) 2017-05-10

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN105507904A (en) * 2016-01-15 2016-04-20 长沙有色冶金设计研究院有限公司 Strip mine foundation pit production method
CN105626075A (en) * 2016-02-03 2016-06-01 长沙有色冶金设计研究院有限公司 Open-pit mine bench pinch-out treatment method
CN106194189A (en) * 2016-07-30 2016-12-07 肖双双 A kind of mining sequence of the long narrow opencut of inclined seam
CN106223959A (en) * 2016-08-30 2016-12-14 中冶北方(大连)工程技术有限公司 A kind of opencut steep wall mining method
CN107575232A (en) * 2017-09-18 2018-01-12 万宝矿产有限公司 A kind of method that stripping rock is reduced during mining
CN109339792A (en) * 2018-12-11 2019-02-15 中钢集团马鞍山矿山研究院有限公司 A method of delineation surface mine stepwise mining limit

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105507904A (en) * 2016-01-15 2016-04-20 长沙有色冶金设计研究院有限公司 Strip mine foundation pit production method
CN105626075A (en) * 2016-02-03 2016-06-01 长沙有色冶金设计研究院有限公司 Open-pit mine bench pinch-out treatment method
CN106194189A (en) * 2016-07-30 2016-12-07 肖双双 A kind of mining sequence of the long narrow opencut of inclined seam
CN106223959A (en) * 2016-08-30 2016-12-14 中冶北方(大连)工程技术有限公司 A kind of opencut steep wall mining method
CN107575232A (en) * 2017-09-18 2018-01-12 万宝矿产有限公司 A kind of method that stripping rock is reduced during mining
CN109339792A (en) * 2018-12-11 2019-02-15 中钢集团马鞍山矿山研究院有限公司 A method of delineation surface mine stepwise mining limit
CN109339792B (en) * 2018-12-11 2020-05-19 中钢集团马鞍山矿山研究院有限公司 Method for defining stage mining boundary of open-pit mine

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