CN107313804B - A kind of open coal mine end side pressure coal filling fully mechanized mining recovery method - Google Patents
A kind of open coal mine end side pressure coal filling fully mechanized mining recovery method Download PDFInfo
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- CN107313804B CN107313804B CN201710514873.8A CN201710514873A CN107313804B CN 107313804 B CN107313804 B CN 107313804B CN 201710514873 A CN201710514873 A CN 201710514873A CN 107313804 B CN107313804 B CN 107313804B
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- 239000003245 coal Substances 0.000 title claims abstract description 94
- 238000005065 mining Methods 0.000 title claims abstract description 31
- 238000011084 recovery Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000002699 waste material Substances 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 238000009423 ventilation Methods 0.000 claims 1
- 230000002045 lasting effect Effects 0.000 abstract 1
- 230000013011 mating Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000011437 continuous method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C47/00—Machines for obtaining or the removal of materials in open-pit mines
- E21C47/02—Machines for obtaining or the removal of materials in open-pit mines for coal, brown coal, or the like
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of open coal mine ends, and pressure coal to be helped to fill fully mechanized mining recovery method, side is helped by proximal end in outdoor pit bottom, in closely at row's lower step, a footrill is tunneled until at surface boundary line along coal seam vertical end side direction, at the same time, ventilating shaft is tunneled, then tunnels return air main entry along the parallel end side in coal seam direction from ventilating shaft bottom with footrill innermost end respectively, and penetrated through in ventilating shaft bottom, form complete ventilating system.The footrill of driving is as fully-mechanized mining working, using filling hydraulic support, coalcutter, the mating carry out operation of drag conveyor.Exploitation carries out simultaneously with filling, until the final mining area in opencut working pit edge direction, end side pressure coal is farthest exploited, reduce Coal Loss, the recovery ratio of open coal mine is improved, meanwhile, it is capable to which the removing waste of open coal mine is made full use of to be filled, reduce the amount of dumping, realizes the lasting exploit of coal.
Description
Technical field
The present invention relates to a kind of recovery method, especially a kind of open coal mine end suitable for for nearly horizontal shallow buried coal seam
Side pressure coal fills fully mechanized mining recovery method.
Background technique
In coal in China industry, resource recovery rate is relatively low, although the open coal mine rate of extraction is higher than underground mine, but if
The residual mine of resource and the boundary periphery covered under Slope of Open Pit Coal Mine is counted, the resource recovery rate of open coal mine exists mostly
75% hereinafter, nearly having 1/4 resource can not recycle.Such as the big South Lake north opencut in Xinjiang, it shares within the scope of the mineral rights of exploration area
1098350000 t can fief matter coal, have in open pit boundary 82374.18 ten thousand t can fief matter coal, the pressure coal amount below side slope is
20980.17 ten thousand t, resource recovery rate of the opencut in mining area are 75%, have 19% coal to be covered by open slope, 6%
Resource be opencut periphery residual coal fail back production.
For nearly horizontal shallow buried coal seam, during Production of Strip Mine, interior row is carried out to the waste that removing generates, such as
Fruit by the coal extraction of end side, will cause forever lost not in time.
Summary of the invention
Technical problem: the invention aims to overcome shortcoming in the prior art, a kind of open coal mine end is provided
Side pressure coal fills fully mechanized mining recovery method, using Rock And Soil bashing, reduces outlet ground amount, more efficiently produce side
The coal resources covered under slope.
Technical solution: side pressure coal in open coal mine end of the invention fills fully mechanized mining recovery method, comprising the following steps:
Step 1) helps side by proximal end in outdoor pit bottom, closely at interior row's lower step, along coal seam vertical end side side
To one footrill (1) of driving until at surface boundary line, at the same time, ventilating shaft is tunneled, then respectively from ventilating shaft bottom and footrill
Innermost end holds side direction driving return air main entry along coal seam in parallel, and penetrates through in ventilating shaft bottom, forms complete ventilating system；
Step 2) arranges matched coalcutter, scraper plate using the footrill as fully-mechanized mining working inside fully-mechanized mining working
Conveyer and filling hydraulic support；
Step 3) at the coal working face rear 30-50m on the outside of outdoor end side square position on, arrangement one is movable
Attal dispensing station, the movable attal dispensing station is connected through belt with filling hydraulic support, constantly toward goaf
Convey attal；
Step 4) in front of the coal working face at 30-50m on the outside of outdoor end side square position on establish one and outdoor face
When dump, the coal that coal working face is produced is transported to rubber conveyer by elevating conveyor, then by adhesive tape after broken crusher machine
Conveyer is transported to interim dump, is finally transported to ground coal washery by truck；
Step 5) coal mining is synchronous with filling to be carried out, by nearly ruler that attal is filled during coalcutter coal cutting
Hydraulic support is constantly delivered to the position for needing to fill, and consolidates, is completed in the drilling depth after filling operation, under through ramming device
The coal mining and filling operation of one drilling depth constantly recycle, until having adopted end side pressure coal.
When the coal seam thickness of exploitation is in 3.5m or more, the slicing and filling by the way of successively filling from the bottom up.
The mode slicing and filling successively filled is to be divided into high seam two layers or two layers or more, is first adopted most lower
Most lower leaf is filled, is then respectively completed coal mining and filling operation for each upwards in turn by layering.
The attal is the removing waste of open coal mine.
The ventilating shaft is located at the left or right side of opencut direction of propulsion and the intersection of front side surface boundary line.
The utility model has the advantages that the present invention is utilized by carrying out back production and filling using continuous method in the side of open coal mine end
Rock And Soil bashing, reduce outlet ground amount, more efficiently produce the coal resources covered under side slope.It greatly improves
Recovery ratio, reduces the waste of resource.Meanwhile there is stronger adaptability to the variation of coal seam thickness.With the prior art
It compares, removing waste is used to fill, reduces the amount of dumping, solving end side, exploitation of coal resources recovery ratio is lower asks
Topic has wide applicability in the art.
Detailed description of the invention
Fig. 1 is the roadway layout floor map that coal fully-mechnized mining method is helped at opencut end of the present invention；
Fig. 2 is the longitudinal profile schematic diagram of Fig. 1；
Fig. 3 is the positional diagram between opencut end side square position and coal working face of the invention.
In figure: 1- footrill；The outdoor pit bottom 2-；3- return air main entry；4- ventilating shaft；The coal seam 5-；6- obturation；The end 7- side is flat
Disk；The outdoor interim dump of 8-；The movable attal dispensing station of 9-.
Specific embodiment
Implementation of the invention is further described below in conjunction with attached drawing.
Side pressure coal in open coal mine end of the invention fills fully mechanized mining recovery method, comprising the following steps:
Step 1) has removed Rock And Soil above coal seam as shown in Figure 1, starting production in opencut, forms outdoor pit
When, side is helped by proximal end in outdoor pit bottom 2, closely at interior row's lower step, tunnels one along 5 vertical end of coal seam side direction
Footrill 1 at the same time, tunnels ventilating shaft 4 to working seam 5, as shown in Fig. 2, ventilating shaft 4 is located at opencut until at surface boundary line
The left or right side of direction of propulsion and the intersection of front side surface boundary line；Then respectively from 1 innermost end edge of 4 bottom of ventilating shaft and footrill
Return air main entry 3 is tunneled in side direction in end in parallel in coal seam 5, and is penetrated through in ventilating shaft bottom, and complete ventilating system is formed；
Step 2) regard the footrill 1 as fully-mechanized mining working, and matched coalcutter, scraper plate are arranged inside fully-mechanized mining working
Conveyer and filling hydraulic support；
Step 3) is as shown in Fig. 2, on outdoor end side square position 7 on the outside of at the coal working face rear 30-50m, cloth
A movable attal dispensing station 9 is set, the movable attal dispensing station 9 is through belt and filling hydraulic support phase
Even, attal constantly is conveyed toward goaf；The attal is the removing waste of open coal mine；
Step 4) as shown in Fig. 2, in front of the coal working face at 30-50m on the outside of outdoor end side square position 7 on establish
One outdoor interim dump 8, the coal that coal working face is produced are transported to adhesive tape conveying after broken crusher machine, by elevating conveyor
Machine, then interim dump 8 is transported to by rubber conveyer, ground coal washery is finally transported to by truck；
Step 5) mines progress synchronous with filling, coal mining and filling by existing conventional techniques progress, in coalcutter coal cutting
In the process, the filled hydraulic support of attal is constantly delivered to the position for needing to fill by nearly ruler, is consolidated through ramming device,
Obturation 6 is formed, is completed in the drilling depth after filling operation, into the coal mining and filling operation of next drilling depth, is constantly recycled, directly
Coal is pressed to end side has been adopted.
When the coal seam thickness of exploitation is in 3.5m or more, the slicing and filling by the way of successively filling from the bottom up,
The mode slicing and filling successively filled is to be divided into high seam two layers or two layers or more, first adopts most lower leaf, will
Most lower leaf filling, is then respectively completed coal mining and filling operation for each upwards in turn.
Claims (5)
1. a kind of open coal mine end side pressure coal fills fully mechanized mining recovery method, which comprises the following steps:
Step 1) helps side by proximal end in outdoor pit bottom, closely at interior row's lower step, digs along coal seam vertical end side direction
It into a footrill (1) until at surface boundary line, at the same time, tunnels ventilating shaft (4), then respectively from ventilating shaft (4) bottom peace
Cave (1) innermost end holds side direction driving return air main entry (3) along coal seam in parallel, and penetrates through in ventilating shaft bottom, forms complete ventilation
System；
The footrill (1) is used as fully-mechanized mining working by step 2, arranges that matched coalcutter, scraper plate are defeated inside fully-mechanized mining working
Send machine and filling hydraulic support；
Step 3) at the coal working face rear 30-50m on the outside of outdoor end side square position (7) on, arrangement one is movable
Attal dispensing station (9), the movable attal dispensing station (9) is connected through belt with filling hydraulic support, constantly past
Goaf conveys attal；
Step 4) in front of the coal working face at 30-50m on the outside of outdoor end side square position (7) on establish one it is outdoor interim
Dump (8), the coal that coal working face is produced are transported to rubber conveyer by elevating conveyor, then by glue after broken crusher machine
Band conveyer is transported to interim dump, is finally transported to ground coal washery by truck；
Step 5) coal mining is synchronous with filling to be carried out, by nearly ruler that attal is filled hydraulic during coalcutter coal cutting
Bracket is constantly delivered to the position for needing to fill, and consolidates, completes in the drilling depth after filling operation, entrance is next through ramming device
The coal mining and filling operation of drilling depth constantly recycle, until having adopted end side pressure coal.
2. a kind of open coal mine end side pressure coal according to claim 1 fills fully mechanized mining recovery method, it is characterised in that: exploitation
Coal seam thickness in 3.5m or more, the slicing and filling by the way of successively filling from the bottom up.
3. a kind of open coal mine end side pressure coal according to claim 2 fills fully mechanized mining recovery method, which is characterized in that described
The mode slicing and filling successively filled is to be divided into high seam two layers or two layers or more, first adopts most lower leaf, will be most lower
Then slicing and filling is respectively completed coal mining and filling operation for each upwards in turn.
4. a kind of open coal mine end side pressure coal according to claim 1 fills fully mechanized mining recovery method, which is characterized in that described
Attal is the removing waste of open coal mine.
5. a kind of open coal mine end side pressure coal according to claim 1 fills fully mechanized mining recovery method, which is characterized in that described
Ventilating shaft (4) is located at the left or right side of opencut direction of propulsion and the intersection of front side surface boundary line.
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| CN201710514873.8A CN107313804B (en) | 2017-06-29 | 2017-06-29 | A kind of open coal mine end side pressure coal filling fully mechanized mining recovery method |
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| CN201710514873.8A CN107313804B (en) | 2017-06-29 | 2017-06-29 | A kind of open coal mine end side pressure coal filling fully mechanized mining recovery method |
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| CN107313804B true CN107313804B (en) | 2019-05-17 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108425674B (en) * | 2018-03-27 | 2019-11-19 | 中煤科工能源投资有限公司 | A kind of coal-mining method of open coal mine end side coal |
| CN109026006B (en) * | 2018-09-20 | 2020-07-24 | 内蒙古煤矿设计研究院有限责任公司 | Novel method for mining open-pit mine slope covered mineral products |
| CN109915148B (en) * | 2019-03-27 | 2020-01-21 | 中国矿业大学 | Open-pit end slope coal-pressing radial mining method |
| CN109882240B (en) * | 2019-03-29 | 2020-04-14 | 中国矿业大学 | Open-air end slope coal-pressing filling mining system |
| CN110284883A (en) * | 2019-07-08 | 2019-09-27 | 中国矿业大学 | Recovery method is filled by a kind of row of adopting, open coal mine end side |
| CN110984992B (en) * | 2019-12-10 | 2021-04-20 | 内蒙古黄陶勒盖煤炭有限责任公司 | Continuous coal mining process |
| CN112855162B (en) * | 2021-01-29 | 2023-03-21 | 辽宁工程技术大学 | Mining method for upper coal seam of composite coal seam strip mine near extraction end slope |
| CN112922596B (en) * | 2021-02-02 | 2021-11-26 | 中国矿业大学 | Dendritic backward type underground mining method for thin coal seam at end slope of strip mine |
| CN114000883A (en) * | 2021-11-02 | 2022-02-01 | 中国矿业大学 | Open pit coal mine end slope coal pressing, mining and charging integrated recovery device and method |
| CN114483038B (en) * | 2022-01-26 | 2022-10-11 | 中国矿业大学 | Coal-pressing underground mining method for out-of-reach strip mine |
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