CN108150172A - A kind of single method of mining coal from heavy pitch thick coal seam - Google Patents
A kind of single method of mining coal from heavy pitch thick coal seam Download PDFInfo
- Publication number
- CN108150172A CN108150172A CN201810047657.1A CN201810047657A CN108150172A CN 108150172 A CN108150172 A CN 108150172A CN 201810047657 A CN201810047657 A CN 201810047657A CN 108150172 A CN108150172 A CN 108150172A
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- China
- Prior art keywords
- coal
- return air
- mining
- seam
- hydraulic support
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D17/00—Caps for supporting mine roofs
- E21D17/003—Caps for supporting mine roofs with essential hydraulic elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
- E21F13/066—Scraper chain conveyors
Abstract
The invention discloses a kind of single method of mining coal from heavy pitch thick coal seam, belong to mineral engineering field.Its coal-mining method includes：Along seat earth one haulage gate of construction, go up a hill with exploiting field both sides and form production system.Then, caving roof coal hydraulic support is arranged along coal seam thickness, it is 1.0m to put coal cycle step pitch in haulage gate.In the goaf of hydraulic support rear, safeguard that a channel is used for return air by top plate side.During coal mining, top coal falls on drag conveyor and is transported through rubber conveyer.Needed for working face it is fresh it is distinguished and admirable enter haulage gate through ginney by exploiting field haulage cross-cut, return air entered by return air channel go up a hill after then cleaning coal working face.The present invention is divulged information using unique return air channel, has the characteristics of roadways layout is simple, adaptable, and working face layout is big, safe coefficient is high.
Description
Technical field
The present invention relates to coal-mining technique fields, and in particular to a kind of single method of mining coal from heavy pitch thick coal seam.
Background technology
Steep-inclined thick coal seam recovery method is always the problem in mining technique field, has caused national departments concerned
Attention.The half-edge coal seam in China is distributed in mostly in middle small mine, and coal seam geological condition is complicated, and exploitation difficulty is big, part
Coal mine tomography is more, reserves are few, gas bearing capacity is big, storage requirement is poor.Due to half-edge coal seam, there are particularity, in exploitation, deposit
In many problems, mainly Coal Loss rate is high, up to 40%-50%, and coal percentage of shale content is not often up to standard；Tunnelling rate
Height, the height of drivage ratio influence the expense that tunnelling is safeguarded, influence the handing-over of mining area work surface in addition to the ventilation of mine all
Certain influence can be brought；Ventilation condition is poor, and the ventilation condition of half-edge coal seam is sufficiently complex；Labor intensity is big, by urgency
The limitation of the mining conditions of inclined seam complexity, exploitation personnel's generally existing working face gradient in seam mining is big, space is small,
The problem of coal breakage in exploitation, supporting, haul are very difficult, inconvenient walking；Exploit it is of poor benefits, with tilt or flat seam ratio
It is of high cost compared with, half-edge coal seam, of poor quality, exploitation difficulty is big, small scale, benefit are low.It is exploited accordingly, with respect to steep-inclined thick coal seam
The research of method, which still has the development of China coal industry, to play a very important role.
Invention content
The present invention task be to provide a kind of single method of mining coal from heavy pitch thick coal seam, roadway layout is simple, can
The drivage ratio in tunnel is reduced, the production of coal face machinery metaplasia, easy to operate, convenient transportation, unique return air channel, ventilation is just
Profit.
The present invention is realizes above-mentioned required by task technical problems to be solved：How to ensure what working face was normally mined
Under the premise of, the advanced gib of coal working face can be completed and ensure that working face is normally divulged information, go to safeguard that return air leads to
Road.
The present invention in order to solve the above technical problems, the technical solution used for：
A kind of single steep-inclined thick coal seam coal mining system including roadways layout, support system, transportation system and leads to
Wind system, the roadways layout are made of haulage gate and district rise, and the haulage gate is arranged in the high seam
Bottom plate, the district rise are obtained by connecting coal seam both sides；
The support system includes caving roof coal hydraulic support, monomer hydraulic bracket, articulated roof beam, anchor pole and metal mesh, institute
Caving roof coal hydraulic support is stated to be located in the haulage gate, for installing anchor pole to lane inner top panel supporting, and set up metal mesh into
Row protection coordinates monomer hydraulic bracket and articulated roof beam to be located in front of working face, completes advanced gib；
The transportation system includes drag conveyor and rubber conveyer, and the head of the drag conveyor is overlapped on described
The tail of rubber conveyer；
The ventilating system includes return air channel, and the return air channel is in the goaf of the caving roof coal hydraulic support rear
By roof side, the return air that the return air channel is used to that cleaning face idle air to be made to enter in the district rise is gone up a hill.
Above-mentioned return air channel safeguards that " people " shape return air leads in caving roof coal hydraulic support rear goaf side I-steel
Road.
As the preferred embodiment of the present invention, the haulage gate uses quadrangle tunnel.
As another preferred embodiment of the present invention, the caving roof coal hydraulic support cycle unit advance is 1.0m.
Further, the haulage gate in the roadways layout only has one.
Another task of the present invention is to provide a kind of single steep-inclined thick coal seam Sub-Level Caving coal-mining method.
A kind of single method of mining coal from heavy pitch thick coal seam, includes the following steps successively：
A connects the district rise of coal seam both sides along seat earth construction haulage gate；
B arranges caving roof coal hydraulic support in the haulage gate along coal seam thickness, and the caving roof coal hydraulic support is each
Cycle unit advance is 1.0m；
C safeguards one section of return air channel in caving roof coal hydraulic support goaf side, is tieed up with the passage of caving roof coal hydraulic support
Next section of return air channel is protected, goes up a hill towards exploiting field return air, is continued with this；
D working faces are all promoted by the way of full-seam mining let-down top coal, and the coal under let-down will by transportation system
It is transported；
E is fresh distinguished and admirable after the haulage cross-cut to ginney of exploiting field, into the haulage gate to coal working face, cleans
Idle air after working face imports mine return air system after the return air channel is gone up a hill to exploiting field return air；
The coal-mining method is exploited suitable for the single steep-inclined thick coal seam of more than 5.5m.
The difficult point of above-mentioned technical proposal：How to ensure the normal ventilation of coal working face, need in goaf before falling
One section of return air channel is safeguarded, determines rational caving roof coal hydraulic support unit advance, ensures that coal mining rate is high, percentage of shale content
It is low, put coal working efficiency height.
Preferably, in step d, the coal under let-down is fallen on drag conveyor, and the coal being scattered is attached on drag conveyor, is matched
Rubber conveyer is closed to be transported.
Advantageous effects are caused by the present invention：
Coal-mining method of the present invention improves the production capacity of working face, reduces the drivage ratio in tunnel, is suitble to more than 5.5m
Single thick coal seam exploitation, haulage gate and two go up a hill composition ventilation, and ventilation and methane accumulation when avoiding Sub-Level Caving are asked
Topic improves the environment of working face.
The characteristics of the method for the present invention, is：
(1) a kind of single steep-inclined thick coal seam Sub-Level Caving coal-mining method of the present invention, takes full advantage of that seam inclination is big, top plate
The characteristics of pressure is small forms complete production system, overcomes traditional steeply-inclined seam mining coal and spoil is rolled along bottom plate
It is dynamic easily to hurt sb.'s feelings, wash upside down the problems such as stent, realize the high-yield and high-efficiency of steeply-inclined seam mining.
(2) the another outstanding feature of the present invention is to safeguard a return air channel with I-steel in goaf, only with a fortune
Defeated crossheading just completes the transport of coal and ventilation task.Safeguard that return air leads at working face rear with the movement of sublevel caving hydrau lic support
Road, make it is fresh it is distinguished and admirable enter working face, the idle air for cleaning working face enters return air by the return air channel of maintenance and goes up a hill, and is formed
Complete ventilating system.
Description of the drawings
Fig. 1 is the schematic front view of the coal-mining method working face of the present invention；
Fig. 2 is the schematic top plan view for implementing coal working face arrangement of the present invention
Fig. 3 is district rise arrangement schematic top plan view of the present invention；
In figure, 1, coal seam；2nd, haulage gate；3rd, caving roof coal hydraulic support；4th, return air channel；5th, I-steel；6th, scraper plate is defeated
Send machine；7th, rubber conveyer；8th, goaf；9th, return air is gone up a hill；10th, ginney；11st, transport is gone up a hill.
Specific embodiment
The present invention proposes a kind of single method of mining coal from heavy pitch thick coal seam, in order to make advantages of the present invention, technical solution
It is clearer, clear and definite, it elaborates with reference to specific embodiment to the present invention.
With reference to shown in Fig. 1, Fig. 2 and Fig. 3, single steep-inclined thick coal seam coal mining system, including roadways layout, supporting
System, transportation system and ventilating system, roadways layout are gone up a hill by haulage gate 2, return air on 9, ginney 10 and transport
Mountain 11 forms, and haulage gate 2 is arranged in high seam bottom plate, and return air 9, ginney 10 of going up a hill goes up a hill 11 by connecting coal with transport
Layer both sides obtain；Support system includes caving roof coal hydraulic support, monomer hydraulic bracket and articulated roof beam, caving shown in Fig. 2
Caving roof coal hydraulic support is arranged at coal hydraulic bracket 3, caving roof coal hydraulic support is located in haulage gate, and along coal seam thickness cloth
It puts；Transportation system includes drag conveyor 6 and rubber conveyer 7, and the head of drag conveyor 6 is overlapped on rubber conveyer 7
Tail；Ventilating system includes return air channel 4 and I-steel 5, and return air channel 4 passes through in caving roof coal hydraulic support rear goaf side
I-steel 5 safeguards that the return air that return air channel is used to that cleaning face idle air to be made to enter in the district rise is gone up a hill.
Embodiment 1：
By taking 2 coal seam of certain mining area A mines as an example：
Its basic condition is：2 coal of pit mining, coal seam thickness 5.8m, 55 ° of seam inclination, roof and floor lithologic are relatively steady
Fixed siltstone and packsand.
It is mined using above-mentioned coal-mining method：
Along 1 construction of bottom plates haulage gate of coal seam, using quadrangle tunnel.The arrangement caving roof coal hydraulic support 3 in coal seam 1,
Across pitch direction is laid with drag conveyor 6 between stent in 1 haulage gate of coal seam, and is installed in haulage gate suitable position
Rubber conveyer 7,6 head of drag conveyor are overlapped on 7 tail of rubber conveyer, form working face raw coal transportation system.Work
Face stent each recycles unit advance as 1.0m.The advance of the face takes nature of coal seam across falling and then low caving coal, working face
Advance support is using anchor pole and metal mesh supporting and coordinates hydraulic prop and articulated roof beam supporting, is moved when reaching a cycle
It after frame distance, is fixed using spud pile, passage cylinder is slipped before stent and is connect with spud pile by frame alternating shifting frame, then in haulage gate
Side I-steel 5 is safeguarded in next section of return air channel to the goaf 8 at stent rear.During Sub-Level Caving, coal that coal discharge outlet is fallen
It is slipped on drag conveyor by special chute, unrestrained coal is attached on drag conveyor by way of manually hoveling coal from one place to another and transported
Go out.
Referring to Fig. 1,2,3, the design for vent line, it is fresh it is distinguished and admirable by ginney 10 enter coal seam 1 transport it is suitable
Slot 2 reaches coal working face, and then return air channel 4 to the exploiting field return air safeguarded before of idle air process goes up a hill 9, then is returned through exploiting field
Wind crossdrift imports mine return air system.
The present invention has the following advantages：
Firstth, tunnelling rate is low, and working face only has a haulage gate, reduces the maintenance cost of tunnelling；
Secondth, working face layout is big, and Coal Loss is few；
Third, working face arrangement are simple, adaptable, are suitble to the exploitation of steep-inclined thick coal seam, the coal of more than coal seam 5.5m
Layer；
4th, top coal caving using dedicated caving roof coal hydraulic support and takes low caving coal, and operation is simpler
Single, the worker needed is less, per tour 4-5 people；
5th, using unique return air channel, face-airing condition difference and methane accumulation is solved the problems, such as, improves work
Make the safety in face, improve the operating environment of worker.
The part do not addressed in the present invention uses or uses for reference prior art and can be realized.
Although more herein used the terms such as rubber conveyer, hydraulic support, it is not precluded and uses it
The possibility of its term, those skilled in the art's simple replacement for being done to these terms under the enlightenment of the present invention should all be
Within protection scope of the present invention.
Claims (6)
1. a kind of single steep-inclined thick coal seam coal mining system, including roadways layout, support system, transportation system and ventilation
System, it is characterised in that：
The roadways layout is made of haulage gate and district rise, and the haulage gate is arranged in the high seam bottom
Plate, the district rise are obtained by connecting coal seam both sides；
The support system includes caving roof coal hydraulic support, monomer hydraulic bracket, articulated roof beam, anchor pole and metal mesh, described to put
Top coal hydraulic support is located in the haulage gate, installs anchor pole to lane inner top panel supporting, and set up metal mesh and protected, matches
It closes monomer hydraulic bracket and articulated roof beam is located in front of working face, complete advanced gib；
The transportation system includes drag conveyor and rubber conveyer, and the head of the drag conveyor is overlapped on the adhesive tape
The tail of conveyer；
The ventilating system includes return air channel, and the return air channel leans on coal in the goaf of the caving roof coal hydraulic support rear
Layer top plate side, the return air that the return air channel is used to that cleaning face idle air to be made to enter in the district rise are gone up a hill.
2. a kind of single steep-inclined thick coal seam coal mining system according to claim 1, it is characterised in that：The haulage gate
Using quadrangle tunnel.
3. a kind of single steep-inclined thick coal seam coal mining system according to claim 1, it is characterised in that：The Sub-Level Caving liquid
It is 1.0m to press stent cycle unit advance.
4. a kind of single steep-inclined thick coal seam coal mining system according to claim 1, it is characterised in that：The roadway layout
Haulage gate in system only has one.
5. a kind of single method of mining coal from heavy pitch thick coal seam, which is characterized in that include the following steps successively：
A connects the district rise of coal seam both sides along seat earth construction haulage gate；
B arranges caving roof coal hydraulic support in the haulage gate along coal seam thickness, and the caving roof coal hydraulic support each recycles
Unit advance is 1.0m；
C safeguards one section of return air channel in caving roof coal hydraulic support goaf side, under being safeguarded with the passage of caving roof coal hydraulic support
One section of return air channel, is gone up a hill towards exploiting field return air, is continued with this；
D working faces are all promoted by the way of full-seam mining let-down top coal, and the coal under let-down is transported by transportation system
Go out；
E is fresh distinguished and admirable after the haulage cross-cut to ginney of exploiting field, into the haulage gate to coal working face, cleaning
Idle air behind face imports mine return air system after the return air channel is gone up a hill to exploiting field return air；
The coal-mining method is exploited suitable for the single steep-inclined thick coal seam of more than 5.5m.
6. a kind of single method of mining coal from heavy pitch thick coal seam according to claim 5, it is characterised in that：In step d, let-down
Under coal fall on drag conveyor, the coal being scattered is attached on drag conveyor, cooperation rubber conveyer transported.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810047657.1A CN108150172A (en) | 2018-01-18 | 2018-01-18 | A kind of single method of mining coal from heavy pitch thick coal seam |
| US16/498,126 US20200024944A1 (en) | 2018-01-18 | 2018-05-11 | Method of mining single steeply-inclined thick coal seam |
| PCT/CN2018/086540 WO2019140812A1 (en) | 2018-01-18 | 2018-05-11 | Mining method for single steeply-inclined thick coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810047657.1A CN108150172A (en) | 2018-01-18 | 2018-01-18 | A kind of single method of mining coal from heavy pitch thick coal seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108150172A true CN108150172A (en) | 2018-06-12 |
Family
ID=62461836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810047657.1A Pending CN108150172A (en) | 2018-01-18 | 2018-01-18 | A kind of single method of mining coal from heavy pitch thick coal seam |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20200024944A1 (en) |
| CN (1) | CN108150172A (en) |
| WO (1) | WO2019140812A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335894A (en) * | 2020-03-28 | 2020-06-26 | 西安科技大学 | Horizontal subsection small short wall fully mechanized caving mining method for steep thick coal seam |
| CN113803070A (en) * | 2021-10-27 | 2021-12-17 | 西安科技大学 | Horizontal subsection coordinated mining method for steeply inclined short-distance ultra-thick coal group |
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| CN112127933A (en) * | 2020-08-28 | 2020-12-25 | 晋城蓝焰煤业股份有限公司 | Method for adjusting long-distance tunneling working face through ventilation system |
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| CN112343597A (en) * | 2020-11-30 | 2021-02-09 | 中国矿业大学(北京) | Horizontal bottom-cutting descending long-wall fully-mechanized coal mining method for steep non-thick coal seam |
| CN112539062B (en) * | 2020-12-03 | 2023-03-24 | 中国煤炭科工集团太原研究院有限公司 | Filling mining method for steeply inclined coal seam |
| CN113216970B (en) * | 2021-06-10 | 2024-02-20 | 湖南科技大学 | Comprehensive mechanized coal mining and mechanized integrated device for steeply inclined coal seam and comprehensive coal mining method thereof |
| CN113482611B (en) * | 2021-06-30 | 2024-02-13 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Mining method for alternately ascending continuous mining thick and large broken ore bodies |
| CN113404492B (en) * | 2021-07-22 | 2023-08-08 | 河南神火煤电股份有限公司 | Soft channel dust fall system and method for fully mechanized coal mining face |
| CN113669064A (en) * | 2021-08-31 | 2021-11-19 | 中国恩菲工程技术有限公司 | Natural caving mining method |
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| CN113863950A (en) * | 2021-09-18 | 2021-12-31 | 中煤科工开采研究院有限公司 | Roadway arrangement method for reserving small coal pillars between stope faces |
| CN114060032B (en) * | 2021-11-08 | 2023-04-18 | 西安科技大学 | Mining method for reserving protective coal pillar on steep-dip extra-thick coal seam |
| CN114263482B (en) * | 2021-12-27 | 2024-02-13 | 安徽理工大学 | Soft roof coal seam non-blasting roof-cutting pressure-relief gob-side entry method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335894A (en) * | 2020-03-28 | 2020-06-26 | 西安科技大学 | Horizontal subsection small short wall fully mechanized caving mining method for steep thick coal seam |
| CN111335894B (en) * | 2020-03-28 | 2021-09-28 | 西安科技大学 | Horizontal subsection small short wall fully mechanized caving mining method for steep thick coal seam |
| CN113803070A (en) * | 2021-10-27 | 2021-12-17 | 西安科技大学 | Horizontal subsection coordinated mining method for steeply inclined short-distance ultra-thick coal group |
| CN113803070B (en) * | 2021-10-27 | 2024-02-27 | 西安科技大学 | Horizontal sectional coordination mining method for steep short-distance super-thick coal group |
Also Published As
| Publication number | Publication date |
|---|---|
| US20200024944A1 (en) | 2020-01-23 |
| WO2019140812A1 (en) | 2019-07-25 |
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