CN107299834A - A kind of mechanized coal mining method - Google Patents
A kind of mechanized coal mining method Download PDFInfo
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- CN107299834A CN107299834A CN201710738547.5A CN201710738547A CN107299834A CN 107299834 A CN107299834 A CN 107299834A CN 201710738547 A CN201710738547 A CN 201710738547A CN 107299834 A CN107299834 A CN 107299834A
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- 239000003245 coal Substances 0.000 title claims abstract description 197
- 238000005065 mining Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000032258 transport Effects 0.000 claims abstract description 45
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 230000001737 promoting effect Effects 0.000 claims description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000003028 elevating effect Effects 0.000 abstract description 2
- 230000036346 tooth eruption Effects 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 241000202814 Cochliomyia hominivorax Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/10—Machines which completely free the mineral from the seam by both slitting and breaking-down
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/20—General features of equipment for removal of chippings, e.g. for loading on conveyor
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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)
- Mechanical Engineering (AREA)
- Remote Sensing (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of mechanized coal mining method, the steps such as coal formula coal mining are mined and harrowed including working face arrangement, slotting, wherein, what working face was laid fells and transports coal all-in-one, constituted by felling and transporting coal main frame and cantilever design support, fell and transport coal main frame and be connected to support free end, support free end has the compound motion track of front and rear and elevating movement, fell and transport coal main frame and be formed with slotting coal mining portion and rake coal coal mining portion；Slotting is mined and forms coal groove on rib top；Rake coal formula, which mines to advance downwardly by support, fells and transports the progress of coal main frame.The beneficial effects of the invention are as follows mine and fell and transport the progress of coal main frame based on the compound motion for moving and moving forward and backward with oscillating lifting, its coal seam recovery ratio is high, and spoil is few in coal product, and quality is good.
Description
Technical field
The present invention relates to a kind of seam mining technology, particularly a kind of mechanized coal mining method.
Background technology
The rich coal resources of China, storage capacity is big, and preservation variation.Divided according to China's coal seam thickness, thickness 0.8
~1.3m belongs to girdle, belongs to ultra-thin coal seam less than 0.8m, in coal in China reserves, and the recoverable reserves of girdle is about 60
Many hundred million tons, account for the 20% of national coal gross reserves.But the yield of girdle only accounts for the 10.4% of national coal total output, and
This ratio is also in progressively downward trend.Its main cause be fell and transport the low integral mechanization degree of coal, single face output and
Efficiency is low, drivage ratio is high, cost of winning is high, labor strength is big.But with the reduction of coal resources, girdle and very thin
The exploitation in coal seam seems more and more urgent, and its optimal recovery method is exactly using Manless mining technology, current Manless mining
Equipment has coal plough, drum-type to fell and transport coal all-in-one, the coal mining of drilling formula, but such equipment energy consumption is high, bulky, be not suitable with pole
Girdle.Therefore, by the effort of those skilled in the art, developing a kind of scraper plate chain type and felling and transporting coal all-in-one, by portion
Dividing on scraper plate sets coal cutting teeth to carry out coal cutting, and all-in-one machine structure is felled and transported so as to be formed.Although the machine can realize mechanical coal mining,
When bellying, its net picking rate is low, in squeeze, and coal mining resistance is big, promotes difficult, high energy consumption, and spoil content is big,
Coal product quality is low.Accordingly, it would be desirable to which the existing coal all-in-one that fells and transports is further improved.
The content of the invention
The purpose of the present invention is that, in view of the shortcomings of the prior art there is provided a kind of mechanized coal mining method, this method passes through tool
Have the compound motion track for lifting and moving forward and backward fells and transports coal all-in-one, realizes that slotting formula mines to mine with rake coal formula and is combined
Mining way realize mechanical coal mining, can easily adapt to Coal Seam Thickness Change requirement, it is ensured that net picking rate and coal product matter
Amount.
To realize object defined above, the present invention is adopted the following technical scheme that.
A kind of mechanized coal mining method, comprises the following steps：
The first step, working face arrangement：It is included in lay in the open-off cut in coal seam and fells and transports coal all-in-one, and passes through support system
Control top, to form just mining face；Wherein, fell and transport coal all-in-one and constituted by felling and transporting coal main frame and cantilever design support, fell and transport coal
Main frame is connected to support free end, and support free end has the compound motion track that front and rear and oscillating lifting is moved, fells and transports coal master
Machine is formed with slotting coal mining portion and rake coal coal mining portion；
Second step, slotting is mined：Adjusted including coal main frame will be felled and transported to rib, coal main frame is felled and transported in operation, and is passed through
Support will fell and transport coal main frame and push ahead progress slotting formula coal mining, to form coal groove on rib top, and coal groove depth is not less than
Fell and transport coal main frame width；
3rd step, rake coal formula is mined：The progress rake coal formula coal mining of coal main frame is felled and transported including being pushed down on by support, until coal
Coal mining is finished below groove；
4th step, this seam mining completes to judge, is then to terminate to mine, no, then performs next step；
5th step, the advance of the face：Including promoting support system, second step and the 3rd step are repeated.
Using this method of preceding solution, by felling and transporting the coal mining device of coal all-in-one machine structure, realize that mechanization is adopted
Coal, support system is used to control top and keeps control heights of roofs, coal-face is had enough operation and space, completes
After the coal mining circulation of one step pitch or set depth, coal all-in-one is felled and transported with support system monolithic push is covered, is adopted into next
Coal is circulated, and is terminated until mining.Coal mining process is to draw out a rectangle coal groove in working face wall upper end first；Then, downwards
Propulsion is felled and transported coal main frame formation rake coal formula and mined, until working face wall is produced completion, is then advanced into next working face,
Proceed slotting and rake coal is mined and circulated, until this seam mining is finished.During slotting, all coal cutting teeths participate in cutting successively
Coal；Harrow during coal mining, mainly by running to the coal cutting teeth coal mining of lower section, the coal cutting teeth of front side plays auxiliary coal mining.
It is preferred that, in the step of slotting is mined, before slotting coal mining, in addition to fell and transport the adjustment of coal perspective.
So that main frame is in horizontally or diagonally state when slotting is mined, to meet angle and the thickness change requirement of bearing.
It is preferred that, in the rake coal formula coal mining step, in addition to fell and transport the adjustment of coal perspective.So that main frame is in slotting
In horizontally or diagonally state during coal mining, to meet angle and the thickness change requirement of bearing.
To meet cutting groove depth more than the situation for felling and transporting coal main frame width, it is ensured that the coal of rib is once opened in working face
Completion is adopted, therefore, in rake coal formula coal mining step, in addition to level promotes and fells and transports coal main frame.
The beneficial effects of the invention are as follows mine based on felling and transporting coal main frame with elevating movement and movable compound motion
Carry out, its coal seam recovery ratio is high, spoil is few in coal product, and quality is good.
Brief description of the drawings
Fig. 1 is the FB(flow block) for realizing the inventive method.
Fig. 2 is that the first structure type for realizing the inventive method use fells and transports the structural representation of coal all-in-one.
Fig. 3 is that second of structure type for realizing the inventive method use fells and transports the structural representation of coal all-in-one.
Fig. 4 is that the third structure type for realizing the inventive method use fells and transports the structural representation of coal all-in-one.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings, but does not therefore limit the present invention to described implementation
Among example scope.
Referring to Fig. 1, a kind of mechanized coal mining method comprises the following steps：
The first step, working face arrangement：Be included in laid in the open-off cut in coal seam as shown in Figure 2 or Figure 3 fell and transport coal one
Machine, and by support system control top, to form just mining face；Wherein, coal all-in-one is felled and transported by felling and transporting coal main frame and cantilever knot
Structure support is constituted, and is felled and transported coal main frame and is connected to support free end, support free end has the compound of front and rear and oscillating lifting motion
Movement locus, fells and transports coal main frame and is formed with slotting coal mining portion and rake coal coal mining portion；
Second step, slotting is mined：Adjusted including coal main frame will be felled and transported to rib, coal main frame is felled and transported in operation, and is passed through
Support will fell and transport coal main frame and push ahead progress slotting formula coal mining, to form coal groove on rib top, and coal groove depth is not less than
Fell and transport coal main frame width；When wherein, using coal all-in-one is felled and transported described in Fig. 2, coal groove depth, which is substantially equal to, fells and transports coal main frame width；
During using felling and transporting coal all-in-one described in Fig. 3, coal groove depth, which is more than or equal to, fells and transports coal main frame width；
3rd step, rake coal formula is mined：The progress rake coal formula coal mining of coal main frame is felled and transported including being advanced downwardly by support, until coal
Coal mining is finished below groove；
4th step, this seam mining completes to judge, is then to terminate to mine, no, then performs next step；
5th step, the advance of the face：Including promoting support system, second step and the 3rd step are repeated.
Wherein, before slotting is mined and during the formula coal mining of rake coal, in addition to the adjustment of coal perspective is felled and transported；So as to fell and transport
Posture when coal formula is mined is mined and harrowed to coal main frame in slotting, meets angle and the thickness change requirement of bearing；In addition, working as
During using felling and transporting coal all-in-one described in Fig. 3, and when the coal groove depth drawn out is more than and fells and transports coal main frame width, also level is needed to promote
Fell and transport coal main frame.
Referring to Fig. 2, the first structure type that this method is used fells and transports coal all-in-one, by felling and transporting coal main frame and support
Constitute, fell and transport coal main frame by frame 1, haulage chain 4, multiple transporting chain plates 2, and the coal cutting teeth 3 being distributed on transporting chain plate 2
Composition fells and transports integrative-structure；The support is in adjustable cantilever design, and support free end has the motion of front and rear and oscillating lifting
Compound motion track, support free end is connected with the frame 1；The transporting chain plate 2, which has, stretches out the front wall of frame 1
The overhanging section of plate, barrier 1a direction extension of the overhanging section along the height of frame 1 to frame 1；Set on the transporting chain plate 2 of part
There is an at least coal cutting teeth 3, continuous several transporting chain plates 2 provided with coal cutting teeth 3 constitute 3 points of coal cutting teeth in one group, any one group
Cloth is on two adjacent edges of transporting chain plate 2, and the coal cutting teeth 3 on the adjacent conveyor carrier bar 2 provided with coal cutting teeth 3 is in coal-face
Mutual dislocation on cross section.Coal cutting teeth 3 positioned at the front end of carrier bar 2 constitutes the main part in slotting coal mining portion, positioned at the main body of carrier bar 2
On coal cutting teeth 3 constitute the slave part in slotting coal mining portion；Rectangle is formed on rib to fell and transport coal main frame by Level Promoting
Coal groove；When carrier bar 2 is run to 1 bottom of frame, the coal cutting teeth 3 in the main body of carrier bar 2 constitutes the main part in rake coal formula coal mining portion, position
Coal cutting teeth 3 in the front end of carrier bar 2 constitutes the slave part in rake coal formula coal mining portion；To fell and transport coal main frame formation rake coal formula by pushing
Mine.
Wherein, support includes the main paragraph 5 and telescopic section 6 for constituting stretching structure, is provided between main paragraph 5 and telescopic section 6
First hydraulic cylinder 7, the free end of main paragraph 5 is hinged by the first hold-down support 8, and the middle part of main paragraph 5 is hinged with second hydraulic cylinder
9, second hydraulic cylinder 9 is hinged by the second hold-down support 10；Telescopic section 6 is hinged with the frame 1 by pivot 11, telescopic section 6
Angle-adjusting mechanism is provided between the frame 1.The angle-adjusting mechanism is made up of worm couple, with by driving worm screw
Worm gear wheel is realized in rotation, so as to realize angle adjustment.Worm gear 22 be fixed in frame 1 and with the coaxial line of pivot 11, worm screw 23
It is arranged in telescopic section 6, and passes through stepper motor or the formation driven by power of servomotor 24.Frame 1 is H-shaped, and frame 1 passes through
The barrier 1a is separated into rectangular groove structure symmetrical above and below；The transporting chain plate 2 be provided with roller 12, roller 12 with it is described
Barrier 1a formation rolls connection.Two medial surfaces of frame 1 are provided with the first wear rib 13, and the first wear rib 13 of both sides is used for
To the transporting chain plate 2 formation horizontal looseness limitation.Transporting chain plate 2 limits its transverse direction by first wear rib 13 at two ends and altered
Dynamic, the leading flank of frame 1 is provided with the second wear rib 14, and the second wear rib 14 is used to form the overhanging section of the transporting chain plate 2
Cross-brace；Wherein, the first wear rib 13 and the second wear rib 14 use half-round bar, and are welded in frame 1, and it leads to
Arc surface is crossed to abut with transporting chain plate 2.The support is set by support system, and support system has from walking structure, and leads to
Hydraulic prop 15 is crossed provided with supporting roof 16, hydraulic prop 15 is fixedly connected on supporting base 17；Support system includes side block
Plate 21, side block, 21 are fixedly connected in the frame 1.
Originally fell and transport in coal all-in-one, the first wear rib 13 and the second wear rib 14 also can be using circular steel bars.
Referring to Fig. 3, second of structure type that this method is used fells and transports coal all-in-one, with the first structure type
Fell and transport coal all-in-one essentially identical, institute's difference is only in that, side shield by mutual dislocation overhead gage 18 and lower baffle plate 19
Stretching structure is constituted, overhead gage 18 is fixedly connected on the supporting roof 16, and lower baffle plate 19 is fixedly connected on the branch river bottom protection
On seat 17.
Referring to Fig. 4, the third structure type that this method is used fells and transports coal all-in-one, with the first structure type
Fell and transport coal all-in-one essentially identical, institute's difference is only in that angle-adjusting mechanism is driven by angle adjustment hydraulic cylinder 25
Angle adjustment is formed, the two ends of angle adjustment hydraulic cylinder 25 are respectively hinged in the telescopic section 6 of frame 1 and support.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (3)
1. a kind of mechanized coal mining method, it is characterised in that comprise the following steps：
The first step, working face arrangement：It is included in lay in the open-off cut in coal seam and fells and transports coal all-in-one, and passes through support system control
Top, to form just mining face；Wherein, fell and transport coal all-in-one and constituted by felling and transporting coal main frame and cantilever design support, fell and transport coal master
Machine is connected to support free end, and support free end has the compound motion track that front and rear and oscillating lifting is moved, fells and transports coal main frame
It is formed with slotting coal mining portion and rake coal coal mining portion；
Second step, slotting is mined：Adjusted including coal main frame will be felled and transported to rib, coal main frame is felled and transported in operation, and passes through support
Coal main frame will be felled and transported and push ahead progress slotting formula coal mining, to form coal groove on rib top, and coal groove depth is not less than felling and transporting
Coal main frame width；
3rd step, rake coal formula is mined：The progress rake coal formula coal mining of coal main frame is felled and transported including being pushed down on by support, until under coal groove
Square coal mining is finished；
4th step, this seam mining completes to judge, is then to terminate to mine, no, then performs next step；
5th step, the advance of the face：Including promoting support system, second step and the 3rd step are repeated.
2. mechanized coal mining method according to claim 1, it is characterised in that in the step of slotting is mined,
Before slotting is mined, in addition to fell and transport the adjustment of coal perspective.
3. mechanized coal mining method according to claim 1, it is characterised in that in the rake coal formula coal mining step, also
Including felling and transporting the adjustment of coal perspective.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710738547.5A CN107299834B (en) | 2017-08-24 | 2017-08-24 | A kind of mechanized coal mining method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710738547.5A CN107299834B (en) | 2017-08-24 | 2017-08-24 | A kind of mechanized coal mining method |
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| Publication Number | Publication Date |
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| CN107299834A true CN107299834A (en) | 2017-10-27 |
| CN107299834B CN107299834B (en) | 2019-04-23 |
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| CN201710738547.5A Active CN107299834B (en) | 2017-08-24 | 2017-08-24 | A kind of mechanized coal mining method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761843Y (en) * | 2005-01-17 | 2006-03-01 | 万再麟 | Mini type coal cutting machine |
| RU2461710C2 (en) * | 2008-04-21 | 2012-09-20 | Валентин Витаутасович Сенкус | Method for coal extraction using activated plough |
| CN103485813A (en) * | 2013-10-11 | 2014-01-01 | 北京诚田恒业煤矿设备有限公司 | Raking device of coal mining shielding support |
| CN104912553A (en) * | 2015-05-14 | 2015-09-16 | 王丙成 | Cutting hobbing cutter device and coal cutter employing the same |
| CN105443125A (en) * | 2015-12-24 | 2016-03-30 | 王洁 | Dragging type coal mining machine |
| CN205172574U (en) * | 2015-11-02 | 2016-04-20 | 王洁 | Inclined coal seams fells and transports coal device |
| CN105804743A (en) * | 2016-04-11 | 2016-07-27 | 中南大学 | Continuous rotating and vibrating cutting equipment realizing pregrooving and used for hard rock ore body and construction process of equipment |
| CN206419011U (en) * | 2017-01-25 | 2017-08-18 | 大同市中科唯实矿山科技有限公司 | A kind of boom-type roadheader with pre- cutting means |
-
2017
- 2017-08-24 CN CN201710738547.5A patent/CN107299834B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2761843Y (en) * | 2005-01-17 | 2006-03-01 | 万再麟 | Mini type coal cutting machine |
| RU2461710C2 (en) * | 2008-04-21 | 2012-09-20 | Валентин Витаутасович Сенкус | Method for coal extraction using activated plough |
| CN103485813A (en) * | 2013-10-11 | 2014-01-01 | 北京诚田恒业煤矿设备有限公司 | Raking device of coal mining shielding support |
| CN104912553A (en) * | 2015-05-14 | 2015-09-16 | 王丙成 | Cutting hobbing cutter device and coal cutter employing the same |
| CN205172574U (en) * | 2015-11-02 | 2016-04-20 | 王洁 | Inclined coal seams fells and transports coal device |
| CN105443125A (en) * | 2015-12-24 | 2016-03-30 | 王洁 | Dragging type coal mining machine |
| CN105804743A (en) * | 2016-04-11 | 2016-07-27 | 中南大学 | Continuous rotating and vibrating cutting equipment realizing pregrooving and used for hard rock ore body and construction process of equipment |
| CN206419011U (en) * | 2017-01-25 | 2017-08-18 | 大同市中科唯实矿山科技有限公司 | A kind of boom-type roadheader with pre- cutting means |
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| CN107299834B (en) | 2019-04-23 |
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