CN104847353A - Layered simultaneous production top coal caving coal mining method of steep dip coal seam group - Google Patents
Layered simultaneous production top coal caving coal mining method of steep dip coal seam group Download PDFInfo
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- CN104847353A CN104847353A CN201410737880.0A CN201410737880A CN104847353A CN 104847353 A CN104847353 A CN 104847353A CN 201410737880 A CN201410737880 A CN 201410737880A CN 104847353 A CN104847353 A CN 104847353A
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- coal
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Abstract
The invention provides a layered simultaneous production top coal caving coal mining method suitable for a steep dip coal seam group. A method of horizontal segmentation and combined layout of roadways is adopted for designing a mining area; a light top coal caving hydraulic support is used for achieving forced caving; all layers of coal are mined reasonably and synchronously; after first stage mining is finished, concentrated transportation roadways become concentrated material roadways of the next stage; and all measures are reasonably applied to improve the utilization rate of the roadways, so that the tunneling engineering amount is reduced, the well construction period is shortened, and the aim of efficient and safe mining can be achieved.
Description
Technical field:
Patent of the present invention and a kind of coal-mining method, a kind of coal-mining method being applicable to steeply pitching seam group highly effective and safe.
background technology:
The existing defect that steeply pitching seam group coal-mining method exists roadway layout complexity, engineering quantity is large, the rate of recovery is low, mechanization degree is low, safety factor is low.
utility model content:
The object of patent of the present invention is to provide a kind of coal-mining method being applicable to steeply pitching seam group highly effective and safe.
The scheme realizing above-mentioned purpose is: mine massively with the method design exploiting field in horizontal fragmentation combined layout tunnel to steeply pitching seam.Use Light Caving Hydraulic Support, overhead caving, each layer coal reasonable synchronization advances.First stage exploitation terminates, and its collective conveyance lane just becomes the concentrated material lane of next stage, and aggregate measures reasonable utilization improves the utilization rate in tunnel, decreases excavation work amount, shortens well construction period, thus achieves object that is efficient, safe working.
Obviously, the good effect using patent of the present invention to exploit steeply pitching seam group is: tunnelling amount reduces; The mine construction duration shortens, and drops into and reduces, and adopt Light Caving Hydraulic Support, overhead caving, roof pressure is discharged, the relatively stable safety of top board; Layering improves greatly with adopting not only coal mining efficiency, and transport potential also must give full play to.
accompanying drawing illustrates:
Figure mono-mining roadway arrangement diagram
In figure 1, be that material lane is concentrated in exploiting field
2, be track lane, exploiting field
3, be layered material lane
4, be layering transportation roadway
5, be collective conveyance lane
6, be exploiting field transportation roadway
7, be connection roadway
8, be concentrated milling coal hole
9, be ventilation holes
M1 m2 m3 m4 ... it is coal seam numbering
specific embodiments:
With reference to accompanying drawing, steeply pitching seam layering of the present invention is described further with adopting Sub-Level Caving coal-mining method:
One, arrange layered material lane 3 along multiple coal seam simultaneously, layering transportation roadway 4, run through the concentrated material lane 1 in each coal seam, with collective conveyance lane 5 and the track lane 2 tunneled by floor strata, after each working face of coal seam produces coal, be delivered to the travelling belt that connection roadway 7 turns in milling coal hole 8 to bank transportation roadway 6 again and send exploiting field.
Two, working face equipment selects Light Caving Hydraulic Support, and single cylinder cutting coal machine, and work plane leading portion adopts heavy chain traction drag conveyor, and rear end adopts light-duty drag conveyor.Be suitable for coal seam conditions: thickness G reatT.GreaT.GT 8m coal seam spacing > 4m Protodyakonov coefficient 0.8 < f < 2.0
Three, cutting coal machine is up cuts top coal, and the descending ground coal that cuts comes and goes and to lancinate coal into one.Wipe top after coal-winning machine coal cutting immediately and move frame, speed wants fast, strives for settling at one go.Front end conveyer bending section puts in place after generally passing through 2-3 time, and rear end conveyer will row passing again after top coal discharges.
Four, generally adopt two cuttves or three cuttves to put depending on top board actual conditions and once push up coal, to move frame one to top board direction by base plate and take turns the half two-wheeled that releasing always puts coal amount and all discharge.But because of Seam factors put coal uneven or see spoil in advance time, the method for shelf caving should be adopted.Crush coal not as good as gently inclined seam because steeply pitching seam ore deposit pressure manifests not strong ore deposit, work plane there will be outstanding top and coarse coal, and the method for explosion now should be taked before roof caving to loosen top coal.If occur that the bulk dead coal trigonum of can not putting with roof caving now also needs the means adopting explosion to reclaim the residual coal of trigonum by base plate side.
Five, in adopting, m1 layer carries previous caving interval compared with m2 layer, adopt downwards according to this thereafter synchronous forward, with interacting of reducing that they cause because adopting as far as possible.
Six, in producing, fresh distinguished and admirable feeding by exploiting field transportation roadway 6 concentrates milling coal holes and 9 ventilation holes to deliver to connection roadway 7 through transportation roadway 5 through 8, after be dispensed to each layer work plane by each layer air duct, discharge to concentrated material lane 1 return air through layers of material lane 3 thereafter.In figure, connection roadway 7 should depending on the actual needs increase and decrease of the coal that ventilates, slips.
Claims (3)
1. a steeply pitching seam group's coal-mining method, is characterized in that: the method design exploiting field adopting horizontal fragmentation combined layout tunnel.
2. according to claim 1, it is characterized in that: in adopting, each layer coal reasonable synchronization advances.
3. according to claim 1, it is characterized in that: first stage exploitation terminates, its collective conveyance lane just becomes the concentrated material lane of next stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410737880.0A CN104847353A (en) | 2014-11-30 | 2014-11-30 | Layered simultaneous production top coal caving coal mining method of steep dip coal seam group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410737880.0A CN104847353A (en) | 2014-11-30 | 2014-11-30 | Layered simultaneous production top coal caving coal mining method of steep dip coal seam group |
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| Publication Number | Publication Date |
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| CN104847353A true CN104847353A (en) | 2015-08-19 |
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| CN201410737880.0A Pending CN104847353A (en) | 2014-11-30 | 2014-11-30 | Layered simultaneous production top coal caving coal mining method of steep dip coal seam group |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183141A (en) * | 2021-12-13 | 2022-03-15 | 中国矿业大学 | Method for controlling surrounding rock of short-distance coal seam mining replacement roadway |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2570435A1 (en) * | 1984-09-20 | 1986-03-21 | Koezponti Banyaszati Fejleszte | Method and equipment for mining steep mineral seams, particularly coal seams |
| CN87100375A (en) * | 1987-01-20 | 1987-07-15 | 吴振虎 | Strip caving open stopping method and equipment |
| CN102392640A (en) * | 2011-06-24 | 2012-03-28 | 山西潞安环保能源开发股份有限公司 | Close-range thin coal layer simultaneous mining and parallel transporting method |
| CN102996129A (en) * | 2012-08-31 | 2013-03-27 | 康健 | Coal mining method for common section haulage roadway of ultra-close thin coal seams |
| CN103104261A (en) * | 2013-02-18 | 2013-05-15 | 中南大学 | Multilayer ore body three dimension cooperation mining method |
-
2014
- 2014-11-30 CN CN201410737880.0A patent/CN104847353A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2570435A1 (en) * | 1984-09-20 | 1986-03-21 | Koezponti Banyaszati Fejleszte | Method and equipment for mining steep mineral seams, particularly coal seams |
| CN87100375A (en) * | 1987-01-20 | 1987-07-15 | 吴振虎 | Strip caving open stopping method and equipment |
| CN102392640A (en) * | 2011-06-24 | 2012-03-28 | 山西潞安环保能源开发股份有限公司 | Close-range thin coal layer simultaneous mining and parallel transporting method |
| CN102996129A (en) * | 2012-08-31 | 2013-03-27 | 康健 | Coal mining method for common section haulage roadway of ultra-close thin coal seams |
| CN103104261A (en) * | 2013-02-18 | 2013-05-15 | 中南大学 | Multilayer ore body three dimension cooperation mining method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183141A (en) * | 2021-12-13 | 2022-03-15 | 中国矿业大学 | Method for controlling surrounding rock of short-distance coal seam mining replacement roadway |
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Application publication date: 20150819 |