CN108894783B - A kind of half-edge coal seam paste body filling coal-mining technique - Google Patents
A kind of half-edge coal seam paste body filling coal-mining technique Download PDFInfo
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- CN108894783B CN108894783B CN201810756678.0A CN201810756678A CN108894783B CN 108894783 B CN108894783 B CN 108894783B CN 201810756678 A CN201810756678 A CN 201810756678A CN 108894783 B CN108894783 B CN 108894783B
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- 239000003245 coal Substances 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000005065 mining Methods 0.000 title claims abstract description 47
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 230000003245 working effect Effects 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 3
- 239000006210 lotion Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000003673 groundwater Substances 0.000 abstract description 5
- 230000002045 lasting effect Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
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- 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
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Abstract
The invention discloses a kind of half-edge coal seam paste body filling coal-mining methods, method disclosed in this method can working seam inclination angle be safely and effectively 40 ° -90 ° of medium-thickness seam, this method can effectively prevent surface subsidence, protect groundwater resources, ground surface environment is not destroyed, lasting exploit can be achieved, Seam Roof And Floor can be effectively controlled in this method, coal working face equipment is few, management is simple, it can be achieved without coal pillar mining, high stoping rate, stope is that both wings arrange rotation exploitation in recovery process, when i.e. left wing's stope fills, back production right flank working face, production efficiency not only can be improved in this recovery method, mine yield can also be increased.
Description
Technical field
The present invention relates to a kind of mining mineral resource technical fields, and in particular to a kind of half-edge coal seam paste body filling coal mining
Technology.
Background technique
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.Since there are particularity for half-edge coal seam, in exploitation, deposit
In many problems, mainly Coal Loss rate is high, up to 40%-50%, and coal conjunction cash rate is not often up to standard；Tunnelling rate
Height, the height of drivage ratio influence the expense of tunnelling maintenance, influence the handover of mining area work surface, or even all to the ventilation of mine
Certain influence can be brought；Ventilation condition is poor, and the ventilation condition of half-edge coal seam is sufficiently complex；Labor intensity of workers 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 be very difficult, inconvenient walking；Exploit it is of poor benefits, with inclination or flat seam ratio
It is at 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.
But high inclination-angle is summed up by a large amount of field observation and experimental study, half-edge coal seam moves towards coal wall
Roof strata activity has the feature that
(1) what working face directly pushed up is caving different in the upper, middle and lower portion of working face inclined direction with the periodic weighting pushed up always
Step, under normal circumstances, working face inclination middle and upper part is first caving or first periodic weighting, inclined lower part lag behind top；Along inclination
, can be dynamic along working face inclined direction rolling (cunning) after the direct top of top is caving, finally it is piled up in working face lower part；Face roof
Migration it is asymmetric, top is larger in working face inclination, and lower section is smaller；The failure mode of working face inclined upper rock stratum shows
For draw break it is bad, lower part show as compression shear destroy.
(2) migration of overlying rock is a space problem, include overlying rock perpendicular to level bending subsidence, broken
Disconnected, revolution, further includes along working face inclined direction and perpendicular to the migration of working face inclined direction；It is mainly showed before fracture
For bending subsidence, it is mainly shown as that the rolling (cunning) along working face inclined direction is moved after fracture.
(3) gob side entry retaining two is helped and the deformation failure feature of roof and floor is different: helping bottom plate easily to glide on tunnel, goaf
The spoil of inbreak also easily under push away and seal in tunnel.Since the increase of top plate angular force component is so that low side (the i.e. coal side) stress in tunnel
Intensity is higher than gently inclined seam, and pucking is caused to increase.The deformation failure of top plate with whether broken top is there are also direct relation, according to
The not broken top of special-shaped section then directly withstands under powerful inclined thrust effect in lane and is also easy to produce absciss layer and bulging, especially when straight
It connects top layer reason more to develop, when lift height is thinner, this phenomenon is more obvious.According to the broken top of trapezoidal, arch form equal section, then top is broken
Directly top afterwards easily generates the biggish changing of the relative positions along interlayer, it is difficult to which the deformation failure of controlroof, these problems are all high inclination-angle, urgency
Inclined seam gob side entry retaining brings larger difficulty.
Currently, the coal-mining method routinely used has, half-edge coal seam moves towards long-armed comprehensive mechanical coal mining and Wangeviry is adopted
A kind of jump is disclosed in coal method, such as Chinese patent application 2013107004649 adopts formula Wangeviry stope offset filling coal mining
Method, this method are transported main lane and stope offset using Wangevili Coal Cutting Method arrangement, multiple stope offsets are divided into multiple
Mining phase jumps stope offset by multiple mining phases of division, does not stay coal column between stope offset.Transporting main lane is main fortune
Defeated channel, stope offset are coal cutting roadway.According to design mining sequence successively all stope offsets of back production in a manner of jumping and adopt, and
Successively it is filled in time, stope offset two sides are always by the coal body of non-back production or the stope offset filled as support
Body controlroof is divided into several mining phases and successively carries out back production, final to realize without coal pillar mining.This method gives full play to
The advantages of Wangevili Coal Cutting Method and the method for collecting coal by the means of filling, can be effectively controlled mining overburden crack and and ground settlement, be able to achieve " three
Under " pressure coal safe and efficient back production, effectively control subsidence；It can also be achieved water protection mining simultaneously.Its method is simple, Yi Shi
It applies, effect is good, but Wangevili Coal Cutting Method is only suitable for flat seam, and exploitation has some limitations.
And half-edge coal seam moves towards long-armed comprehensive mechanical coal mining technology and there is surface collapse, coal-getter in practical applications
Make face bracket to glide, Seam Roof And Floor control difficulty, easily cause down frame and the routed bent, bottom plate of generation roof to slip, coal wall piece
Phenomena such as side, management in workface are more difficult.Existing country's half-edge coal seam moves towards long-armed comprehensive mechanical coal mining technology and is suitble to arrange
In 55 ° of seam inclination hereinafter, there is also technical problems not to solve in the coal seam at 55 ° of inclination angle or more, there is also certain limitations.
Above-mentioned technical problem is faced, surface subsidence can effectively be prevented by developing one kind, not to groundwater resources, ground surface environment
It destroys, it can be achieved that lasting exploit, and Seam Roof And Floor can be effectively controlled, exploitation reducig device therefor, management is simply opened
Mining method is extremely urgent.
Summary of the invention
In order to solve the above technical problems, the present invention is intended to provide a kind of half-edge coal seam paste body filling coal-mining technique, the skill
Art can effectively prevent surface subsidence, can protect groundwater resources, guarantee that ground surface environment does not destroy, it can be achieved that lasting exploit.
This method can effectively control Seam Roof And Floor；Coal working face equipment is few, and management is simple, and this method is applicable to 40 ° -90 °
Medium-thickness seam.
The present invention provides a kind of half-edge coal seam paste body filling coal-mining methods, method includes the following steps:
(1) it is open in underground transportation main entry along back production bearing, raise advance working face haulage gate, wait tunnel to mine
Drifting gallery, i.e. working face open-off cut eye when well designs the mining elevation upper limit；
(2) by underground return air main entry along back production working face of coal seam adjacent coal bed be open driving air return lane, tunneling direction with return
Mining face is parallel, and when driving is to stope air return way, driving wears layer windstone gate and stope air return way
Perforation forms stope ventilation and materials transportation system；
(3) along underground transportation main entry direction, driving is exploited, and working face mining sequence is by being returned down toward higher slice
Adopt, form stope drift active workings, to slicing after carry out paste body filling, form exploitation process and recycle.
The angle of raise advance described in above-mentioned steps (1) is 16 °；The working face haulage gate for Coal Transport and
The fresh distinguished and admirable tunnel into working face of working face.
Air return lane described in above-mentioned steps (2) is the discharge of stope waste air and filler haulage drift.
Above-mentioned steps (3) described slicing, each advance of working cycle are 6 meters, point two layers of exploitation, 2.2 meters of first layer, the
Two 3.8 meters of layerings；The stope drift active workings slope control is in 5-8 ° of raise advance, to facilitate lotion gravity flow filling.
During the work time, stope air return way adopts lane length according to the working face transporting equipment class used
Type controls between 60 meters -120 meters.
The beneficial effects of the present invention are:
(1) half-edge coal seam paste body filling coal-mining method provided by the invention, can safely and effectively working seam inclination angle
For 40 ° -90 ° of medium-thickness seam, this method can effectively prevent surface subsidence, and groundwater resources, ground surface environment is protected not to be broken
Badly, it can be achieved that lasting exploit.
(2) Seam Roof And Floor can be effectively controlled in half-edge coal seam paste body filling coal-mining method provided by the invention, mines
Working face equipment is few, and management is simple.
(3) half-edge coal seam paste body filling coal-mining method provided by the invention is, it can be achieved that without coal pillar mining, working face not by
The limitation of corner coal, high stoping rate more convenient to corner coal back production.
(4) half-edge coal seam paste body filling coal-mining method provided by the invention, stope are that both wings arrange that rotation is opened
It adopts, i.e., when left wing's stope fills, production efficiency is not only can be improved in back production right flank working face, this recovery method, can be with
Increase mine yield.
Detailed description of the invention
Fig. 1 is the floor plan that half-edge coal seam paste body filling disclosed by the invention is mined；
Fig. 2 is half-edge coal seam paste body filling coal mining I-I sectional view disclosed by the invention；
Fig. 3 is half-edge coal seam paste body filling coal mining II-II sectional view disclosed by the invention.
Appended drawing reference: the goaf 1-；2- stope；3- windstone gate；4- stope drift active workings；5- is for mining face；6-
Underground transportation main entry；7- working face haulage gate；8- underground transportation tunnel；9- underground return air main entry；10- air door；11- return air
Lane；12- working face open-off cut eye；13- stope air return way；14- back production coal seam.
Specific embodiment
A kind of half-edge coal seam paste body filling coal-mining method of embodiment 1
(1) opening is moved towards along back production coal seam 14 in underground transportation main entry 6, with 16 ° of raise advance working face haulage gates 7,
The working face haulage gate 7 is used for Coal Transport and face-airing tunnel, wait tunnel to the mine design mining elevation upper limit
When drifting gallery, i.e. working face open-off cut eye 12；
(2) it is open by underground return air main entry 9 along 2 adjacent coal bed of back production working face of coal seam and tunnels air return lane 11, tunneling direction
Parallel with stope 2, when driving is to stope air return way 13, driving wears layer windstone gate 3 and stope
Air return way 13 penetrates through, and forms stope ventilation and materials transportation system；
(3) along 6 direction of underground transportation main entry, driving is exploited, and working face mining sequence is by being returned down toward higher slice
It adopts, forms stope drift active workings 4, each advance of working cycle is 6 meters, point two layers of exploitation, 2.2 meters of first layer, the second 3.8 meters of layering, to
Paste body filling is carried out after slicing, forms an exploitation process circulation.
When carrying out coal work, along 6 direction of underground transportation main entry, driving is exploited, and working face mining sequence is under
Back production is carried out to higher slice, forms stope drift active workings 4, each advance of working cycle is 6 meters, point two layers of exploitation, 2.2 meters of first layer, the
Two 3.8 meters of layerings, to slicing after carry out paste body filling, the stope drift active workings slope control in 5-8 ° of raise advance,
To facilitate lotion gravity flow filling, an exploitation process circulation is formed.Stope air return way 13 adopts lane length according to making
Working face transporting equipment type controls between 60 meters -120 meters.
Half-edge coal seam paste body filling coal-mining method provided by the invention can safely and effectively working seam inclination angle be
40 ° -90 ° of medium-thickness seam, this method can effectively prevent surface subsidence, and groundwater resources, ground surface environment is protected not to be destroyed,
Lasting exploit can be achieved.Method provided by the invention not only can effectively control Seam Roof And Floor, and coal working face equipment is few, pipe
Reason is simple, can also realize no coal pillar mining, no coal pillar mining working face is not limited by corner coal, to corner coal back production side
Just, the rate of extraction is improved, more importantly recovery method provided by the invention, stope is that both wings arrange rotation exploitation,
When i.e. left wing's stope fills, production efficiency is not only can be improved in back production right flank working face, this recovery method, can be with
Increase mine yield.
Claims (2)
1. a kind of half-edge coal seam paste body filling coal-mining method, it is characterised in that: method includes the following steps:
(1) opening, raise advance working face haulage gate (7), wait dig are moved towards along back production coal seam (14) in underground transportation main entry (6)
Drifting gallery when proceeding to the mine design mining elevation upper limit, i.e. working face open-off cut eye (12)；
(2) by underground return air main entry (9) along stope (2) adjacent coal bed be open driving air return lane (11), tunneling direction with
In parallel, when driving is to stope air return way (13), driving wears a layer windstone gate (3) and back production work to stope (2)
Make face air return way (13) perforation, forms stope ventilation and materials transportation system；
(3) along underground transportation main entry (8) direction, driving is exploited, and working face mining sequence is by being returned down toward higher slice
Adopt, formed stope drift active workings (4), to slicing after carry out paste body filling, form exploitation process and recycle；
Slicing described in step (3) is point two layers of back production, and each advance of working cycle is 6 meters, 2.2 meters of first layer, second point
3.8 meters of layer；
The angle of raise advance described in step (1) is 16 °；
Stope drift active workings (4) slope control described in step (3) is in 5-8 ° of raise advance, to facilitate lotion gravity flow filling；
Working face haulage gate (7) described in step (1) is used for Coal Transport and face-airing tunnel；
Air return lane (11) described in step (2) is the discharge of stope (2) waste air and filler haulage drift.
2. coal-mining method according to claim 1, it is characterised in that: stope air return way (7) adopts lane length
According to the working face transporting equipment type used, control between 60 meters -120 meters.
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| CN109882176B (en) * | 2019-04-04 | 2022-03-25 | 中国矿业大学(北京) | Double-wing alternate collaborative stoping method for end mining filling and hydraulic support roof cutting gob-side entry retaining |
| 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 |
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| CN103244123A (en) * | 2013-05-14 | 2013-08-14 | 贵州晨辉达矿业工程设计有限公司 | High-dipping medium thick ore body mining method |
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| CN103628877A (en) * | 2013-11-26 | 2014-03-12 | 武汉科技大学 | Multilayer gentle dip thin-medium ore deposit filling and mining method |
| CN104806244A (en) * | 2015-04-03 | 2015-07-29 | 东北大学 | Filling mining method for slant middle-thick ore body |
| CN105019904A (en) * | 2015-07-23 | 2015-11-04 | 中南大学 | Mining- machine-based slowly inclined thin ore vein mechanized continuous mining method |
| CN105587318A (en) * | 2016-01-22 | 2016-05-18 | 长沙有色冶金设计研究院有限公司 | Filling mining method for continuous backstoping of gently inclined parallel medium thick ore body group |
| CN107869349A (en) * | 2017-11-16 | 2018-04-03 | 北京科技大学 | A kind of mechanized mining method of gently inclined medium thick orebody |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244123A (en) * | 2013-05-14 | 2013-08-14 | 贵州晨辉达矿业工程设计有限公司 | High-dipping medium thick ore body mining method |
| CN103603665A (en) * | 2013-10-25 | 2014-02-26 | 河北省矾山磷矿有限公司 | Hanging wall side orebody extracting method in mine mining range |
| CN103628877A (en) * | 2013-11-26 | 2014-03-12 | 武汉科技大学 | Multilayer gentle dip thin-medium ore deposit filling and mining method |
| CN104806244A (en) * | 2015-04-03 | 2015-07-29 | 东北大学 | Filling mining method for slant middle-thick ore body |
| CN105019904A (en) * | 2015-07-23 | 2015-11-04 | 中南大学 | Mining- machine-based slowly inclined thin ore vein mechanized continuous mining method |
| CN105587318A (en) * | 2016-01-22 | 2016-05-18 | 长沙有色冶金设计研究院有限公司 | Filling mining method for continuous backstoping of gently inclined parallel medium thick ore body group |
| CN107869349A (en) * | 2017-11-16 | 2018-04-03 | 北京科技大学 | A kind of mechanized mining method of gently inclined medium thick orebody |
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