CN103726849B - The outer stoping low coal seam technology of a kind of open coal mine hole end boundary - Google Patents
The outer stoping low coal seam technology of a kind of open coal mine hole end boundary Download PDFInfo
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- CN103726849B CN103726849B CN201210434423.5A CN201210434423A CN103726849B CN 103726849 B CN103726849 B CN 103726849B CN 201210434423 A CN201210434423 A CN 201210434423A CN 103726849 B CN103726849 B CN 103726849B
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- 239000003245 coal Substances 0.000 title claims abstract description 114
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 230000010006 flight Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000032258 transport Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 5
- 238000005422 blasting Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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Abstract
The outer stoping low coal seam technology of a kind of open coal mine hole end boundary, under being particularly useful for overcasting technigue, the outer girdle of end boundary is cheated in back production.Fillet is adopted to stay pillar-and-panel work program in recovery process.When No. 1 coal seam is pushed ahead and stayed enough working spaces, along No. 2 coal seam covering layer pick ditches.No. 2 coal seam dass width are less than No. 1 coal seam dass width, stay width to be the coal petrography mixed column of the difference of No. 1 coal seam dass and No. 2 coal seam dass width in inner casting side.At No. 2 roof drawdown initial stages, overburden is transported to internal dumping, and adopt active line with choosing and advance, top board overburden is backfilled to No. 2 coal seam goafs.No. 1 coal seam transports through coal petrography mixed column, fortune coal main access, and No. 2 coal seams are transported by coal petrography mixed column, fortune coal main access through its ramp, goaf.Its method solves owing to exploiting the impact of No. 2 coal seams under former technique No. 1 coal seam transportation system, can reduce repetition overburden amount, reclaims the outer coal of boundary, increases economic benefit, have practicality widely.
Description
Technical field
The present invention relates to a kind of Opencut coal mine mining method, under being specially adapted to overcasting technigue, the outer girdle of end boundary is cheated in back production, can reduce repetition overburden amount, simplify fortune breeching road, reclaim coal outside boundary, increase economic benefit.
Background technology
Because pinpoint blasting-Pull shovel handling technique has higher requirement to goaf, therefore this technology is applied in the stripping of the main mining coal seam top board of large outdoors colliery foot usually.But, coal seam in open coal mine boundary is all that multiple seam tax is deposited, often because the reasons such as technology, economy, technique are by the extraction of a part of coal seam, coal seam is thinner or make some coal seam still with higher economic worth cannot extraction by production practice device-restrictive, causes the wasting of resources.Traditional strip mining transformation program is pick ditch, expands the process of side, as the girdle under the main mining coal seam of the pusher back production pinpoint blasting overcasting technigue of step traditionally and the outer coal seam of boundary, certainly will impact open coal mine pinpoint blasting and Pull shovel handling work.
Summary of the invention
In view of prior art Problems existing, the object of the invention is: provide one can reduce repetition overburden amount, simplify fortune breeching road, reclaim the outer stoping low coal seam method of open coal mine hole end boundary of the outer girdle of boundary.
The technical solution used in the present invention is: a kind of outer stoping low coal seam method of open coal mine hole end boundary, is characterized in that layout No. 2 coal seam dasses, stay and establish coal petrography mixed column, No. 2 roof overburden backfills, fortune coal line arrangement.
A., when No. 1 coal seam is pushed ahead and stops enough working spaces, arrange No. 2 coal seam dasses along No. 2 roof covering layer pick ditches, No. 2 coal seam dass width are less than No. 1 coal seam dass width.
B. coal petrography mixed column is arranged in No. 2 inner casting sides of roof covering layer, and its width is the difference of No. 1 coal seam dass width and No. 2 coal seam dass width.
C.2, after number coal seam back production regular period, its top board overburden can be backfilled to No. 2 coal seam goafs.
D. transport seam road and comprise No. 1 coal seam transportation route and No. 2 coal seam transportation routes, the coal in No. 1 coal seam transports by transporting coal main access from No. 1 seat earth level through coal petrography mixed column.The coal in No. 2 coal seams rises to No. 1 seat earth level through Nei Pai ramp, No. 2 coal seams, and transports through fortune coal main access.
During the backfill of No. 2 roof overburden stripping things, formed in easy flights in the Nei Pai ramp, No. 2 coal seams of 8% ~ 10%, using as transport routes, casting absolute altitude is no more than coal petrography mixed column height.
Belong to girdle due to No. 2 coal seams therefore do not divide step separately, being divided into same step with its top board.
The technique effect that the present invention reaches is: overcome tradition pick ditch, expand the deficiency of the strip mining transformation program of side, make to repeat to peel off during the end boundary girdle of exploitation hole to reduce, fortune breeching road simplifies greatly, and transportation route length reduces, overall economic efficiency significantly improves, and has practicality widely.
Accompanying drawing explanation
Accompanying drawing 1 is floor map of the present invention.
Accompanying drawing 2 is generalized sections of the present invention.
In figure: 1-pinpoint blasting-Pull shovel handling step, 2-1 coal seam, 3-2 roof covering layer, 4-2 coal seam, 5-2 coal seam goaf, 6-coal petrography mixed column, 7-In-pit dumping, 8-transports coal main access, Nei Pai ramp, 9-2 coal seam.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention are further described:
When No. 1 coal seam (2) is pushed ahead and stops enough working spaces, arrange dass along No. 2 roof covering layers (3), No. 2 coal seam (4) dass width are less than No. 1 coal seam (2) dass width.Stay width to be the coal petrography mixed column (6) of the difference of No. 1 coal seam dass and No. 2 coal seam dass width No. 2 roof covering layer (3) inner casting (7) sides simultaneously.No. 2 roof covering layer (3) drawdown initial stages, overburden is transported to internal dumping, adopt active line with choosing to advance, No. 2 coal seam goafs (5) expand gradually, top board overburden is backfilled to No. 2 coal seam goafs (5), and forms Nei Pai ramp, No. 2 coal seams (9) that the gradient is 8%-10%.Now, No. 1 coal seam (2) is transported by fortune coal main access (8) from 1 coal seam floor level through coal petrography mixed column (6), No. 2 coal seams (4) rise to No. 1 seat earth level through Nei Pai ramp, No. 2 coal seams (9), and transport through fortune coal main access (8).
Above-mentioned detailed description of the invention is used for explaining and the present invention is described, instead of limits the invention, and in the scope that spirit of the present invention and claim are protected, any amendment make the present invention and change, all fall into the scope of protection of the invention.
Claims (3)
1. the outer stoping low coal seam technology of open coal mine hole end boundary, is characterized in that: arranges No. 2 coal seam dasses, stay and establish coal petrography mixed column (6), No. 2 roof covering layer (3) overburdens backfills, transport coal line arrangement,
A. when No. 1 coal seam (2) is pushed ahead and stops enough working spaces, No. 2 coal seam (4) dasses are arranged along No. 2 roof covering layer (3) pick ditches, No. 2 coal seam (4) dass width are less than No. 1 coal seam (2) dass width
B. coal petrography mixed column (6) is arranged in No. 2 roof covering layer (3) inner casting (7) sides, and its width is the difference of No. 1 coal seam (2) dass width and No. 2 coal seam (4) dass width,
C.2, after number coal seam (4) the back production regular period, top board overburden can be backfilled to No. 2 coal seam goafs (5),
D. transport seam road and comprise No. 1 coal seam (2) transportation route and No. 2 coal seam (4) transportation routes, No. 1 coal seam (2) is transported by fortune coal main access (8) from No. 1 seat earth level through coal petrography mixed column (6), No. 2 coal seams (4) rise to No. 1 seat earth level through Nei Pai ramp, No. 2 coal seams (9), and transport through fortune coal main access (8).
2. the outer stoping low coal seam technology of open coal mine hole end boundary according to claim 1, it is characterized in that: during No. 2 roof covering layer (3) overburden backfills, formed in easy flights in Nei Pai ramp, No. 2 coal seams (9) of 8% ~ 10%, using as transport routes, casting absolute altitude is no more than coal petrography mixed column (6) highly.
3. the outer stoping low coal seam technology of open coal mine hole end boundary according to claim 1, is characterized in that: No. 2 coal seams (4) belong to girdle therefore do not divide step separately, are divided into same step with its top board covering layer (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210434423.5A CN103726849B (en) | 2012-10-10 | 2012-10-10 | The outer stoping low coal seam technology of a kind of open coal mine hole end boundary |
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| CN201210434423.5A CN103726849B (en) | 2012-10-10 | 2012-10-10 | The outer stoping low coal seam technology of a kind of open coal mine hole end boundary |
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| CN103726849A CN103726849A (en) | 2014-04-16 |
| CN103726849B true CN103726849B (en) | 2016-01-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106368706A (en) * | 2016-08-27 | 2017-02-01 | 肖双双 | Casting blast and pull shovel handling mining procedure |
| CN115726785B (en) * | 2022-10-28 | 2023-07-21 | 国能经济技术研究院有限责任公司 | Operation method for reserving walking channel in dragline mining process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2039280C1 (en) * | 1991-07-08 | 1995-07-09 | Красноярский институт цветных металлов им.М.И.Калинина | Excavating and loading complex for opencast mining |
| CN102278115A (en) * | 2011-06-27 | 2011-12-14 | 汉通建设集团有限公司 | High-efficiency safe environment-friendly mining method for rare shallow-buried ore layer in irregular strip-shaped distribution |
| CN102505962A (en) * | 2011-10-09 | 2012-06-20 | 中煤张家口煤矿机械有限责任公司 | Stripping, backfilling and conveying system for open-pit mines |
| 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 |
-
2012
- 2012-10-10 CN CN201210434423.5A patent/CN103726849B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2039280C1 (en) * | 1991-07-08 | 1995-07-09 | Красноярский институт цветных металлов им.М.И.Калинина | Excavating and loading complex for opencast mining |
| CN102278115A (en) * | 2011-06-27 | 2011-12-14 | 汉通建设集团有限公司 | High-efficiency safe environment-friendly mining method for rare shallow-buried ore layer in irregular strip-shaped distribution |
| CN102505962A (en) * | 2011-10-09 | 2012-06-20 | 中煤张家口煤矿机械有限责任公司 | Stripping, backfilling and conveying system for open-pit mines |
| 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 |
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Effective date of registration: 20151203 Address after: 221116 Jiangsu city of Xuzhou province university Quanshan District Road No. 1 South Lake Campus of China University of Mining and Technology Applicant after: China University of Mining & Technology Address before: 221116 School of mining engineering, China University of Mining and Technology, Jiangsu, Xuzhou B504 Applicant before: Ma Li |
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