CN109322669A - The alternate filling of the hard and soft band in inclined seam goaf is without coal column continuous mining method - Google Patents
The alternate filling of the hard and soft band in inclined seam goaf is without coal column continuous mining method Download PDFInfo
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- CN109322669A CN109322669A CN201811471156.2A CN201811471156A CN109322669A CN 109322669 A CN109322669 A CN 109322669A CN 201811471156 A CN201811471156 A CN 201811471156A CN 109322669 A CN109322669 A CN 109322669A
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- band
- filling
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- drift
- goaf
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- 239000003245 coal Substances 0.000 title claims abstract description 30
- 238000005065 mining Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000004576 sand Substances 0.000 claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000006210 lotion Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims description 11
- 239000002674 ointment Substances 0.000 claims description 9
- 239000011435 rock Substances 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000004035 construction material Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000006071 cream Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- -1 has gangue Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005728 strengthening Methods 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
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/02—Provisional protective covers for working space for use in longwall working
-
- 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
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to a kind of alternate fillings of hard and soft band in inclined seam goaf without coal column continuous mining method, this method carries out rigid strip filling to inclined seam goaf first, band multiple operation face arrangement, material are sand base lotion, spacing less than the breaking down for the first time step pitch directly pushed up, and the back production side of band upper end to track gallery terminates；Then drift-sand is transported to goaf using the track gallery of reservation, poured into and full of the gap between rigid strip, flexible support band of the formation to goaf top plate；The closing of lotion wall finally is carried out to drift-sand band in track gallery back production side.The alternate filling of the hard and soft band in inclined seam goaf is without coal column continuous mining method, it ensure that drift-sand dry stowing connects top effect using the slipping property certainly of drift-sand, improve filling band overall stability, it is ensured that obturation to inclined seam goaf top plate it is long when control effect；The track gallery of reservation can be the back production service of subsequent work face, continuously exploit between realization working face without coal column.
Description
Technical field
The present invention relates to a kind of underground mine recovery method, especially a kind of hard and soft band in inclined seam goaf is alternate to be filled
Fill out no coal column continuous mining method.
Background technique
Northwest China area especially Xinjiang region coal resources reserves are abundant, and seam inclination is big, and be distributed in more arid,
Semiarid desert or Gobi Region, water resources shortage, ecological environment are extremely fragile.Traditional caving method processing goaf generates
Mining induced fissure and ground settlement can cause serious destruction to groundwater resources and surface vegetation.Filling mining is to reduce to adopt
The effective ways in crack and ground settlement, and filler and filling method are the weights for influencing filling mining overall technology economy
Want factor.Goaf filling material mainly has gangue, ointment material, high-water material and concrete material, filling method at present
There are part (band) filling and whole filling.Strip filling is higher to filler performance requirement, uses ointment material, Gao Shui more
Material and concrete material.Although material utilization amount is less compared to whole filling, filler unit price is higher, and needs to consume big
The water resource of amount is not suitable for western water shortage mining area.Moreover, filling band is poor in inclined seam goaf internal stability, add
The top plate of filling interband exposure be easy to take out and emit and be caving, filling band to top plate it is long when control effect be difficult to ensure.It is mined out
Area integrally fills the overall stability that can effectively improve obturation, it is ensured that obturation to goaf top plate it is long when control imitate
Fruit, but the restriction by filling cost, practical application are restricted.Either strip filling or the whole method of collecting coal by the means of filling,
A degree of influence and destruction inevitably are caused on local environment, in addition northwest coal resources as China most
The coal reserve of not yet large-scale development afterwards, also should be as much as possible while reducing mining activity to ecological environment destruction
Improve the rate of extraction of coal resources.And segment protection coal column stays to set and causes underground mine Coal Loss between working face at present
Main cause.
Summary of the invention
In order to reduce when northwest China especially Xinjiang region inclined seam is exploited to groundwater resources and surface vegetation
Destroy, improve obturation to inclined seam overburden of the goaf it is long when control effect, meanwhile, reduce filling cost, increase coal
Resource recovery ratio, the present invention specific condition sandy for above-mentioned regional water shortage, proposes the hard and soft band in inclined seam goaf
Alternate filling is without coal column continuous mining method.
The technical scheme adopted by the invention to solve the technical problem are as follows:
1. the working face about 30-60m that exceeds the time limit carries out anchor cable reinforcement to track gallery after inclined seam working face is from open-off cut back production
Supporting；
2. carrying out first time cream to goaf when the inclined seam face advanced distance close breaking down for the first time step pitch directly pushed up
Body strip filling, band tendency arrangement (multiple operation face), band lower end to the non-back production side of haulage way, band upper end to track
Gallery back production side, strip width 3-10m, ointment material are the mixture of drift-sand, cement, flyash and water-reducing agent composition,
The ratio of mud is 0.5；
3. drift-sand is transported to goaf via track gallery using overturning carriage-type mine car, drift-sand is discharged by paste body filling
The U-shaped space of band, open-off cut coal wall and the non-back production side lane side composition of haulage way, since drift-sand has from slipping property, this inclines
Oblique U-shaped space will be gradually filled with from bottom to top；
4. wall constructed to drift-sand filling band in track gallery back production side after drift-sand is full of above-mentioned inclination U-shaped space
Upper end is closed, and closing wall construction material is the ointment material described in 2., and closing thickness of wall body is 3-5m, wall outer side
Should with 2. described in lotion band upper end flush；
5. the work of lotion strip filling, the work of drift-sand strip filling and drift-sand fill with constantly pushing ahead for working face
It fills out band upper end closed wall and constructs work and successively carry out, lotion band spacing should be less than the breaking down for the first time step pitch directly pushed up.
It is described 1. in the advanced Anchor reinforced support parameter of track gallery: anchor cable diameter is 22mm, and anchor cable length is 4-
8m, between anchor cable, array pitch be respectively between former suspension roof support, 1-2 times of array pitch, anchorage cable anchoring mode is resin explosive roll the extensible bolting,
Design parameter presses size to determine according to Roof rock feature, back production height, mining depth and ground.
It is described 2. in lotion strip width and filling material proportion according to Roof rock feature, back production height, mining depth, press
Size and Roof Control require to determine.
It is described 4. in closing thickness of wall body according to Roof rock feature, back production height, mining depth, press size and ointment material
Proportion determines.
It is described 5. in front of drift-sand strip filling, progress linked network need to directly push up to locally broken goaf and is temporarily propped up
Shield guarantees the density of the integrality directly pushed up and drift-sand filling band.
Beneficial effect of the invention is that the alternate filling of the hard and soft band in inclined seam goaf is logical without coal column continuous mining method
Cross and replace the higher strip filling material of part price using northwest development cheap drift-sand from a wealth of sources, reduce filling at
This while, makes full use of what the slipping property certainly of drift-sand ensure that drift-sand dry stowing to connect top effect, improves filling band
Overall stability, ensure that obturation to inclined seam goaf top plate it is long when control effect.Moreover, while filling
Remain section track gallery, the section track gallery of reservation can be the back production service of subsequent work face, realize between working face
No coal column is continuously exploited.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings.
Fig. 1, which is that the hard and soft band in inclined seam goaf is alternate, fills the top view constructed without coal column continuous mining method.
Fig. 2 is the alternate filling of the hard and soft band in inclined seam goaf without moving towards direction side view in coal column continuous mining method
(I-I position in Fig. 1).
Fig. 3 is that the alternate filling of the hard and soft band in inclined seam goaf is being filled without drift-sand band in coal column continuous mining method
Fill out place's tendency direction side view (II-II position in Fig. 1).
Fig. 4 is the alternate filling of the hard and soft band in inclined seam goaf without tendency side at sand off in coal column continuous mining method
To side view (III-III position in Fig. 1).
In figure, 1. track gallerys, 2. tracks, 3. roll-over box mine cars, 4. closing walls, 5. working faces, 6. cream
Body band, 7. drift-sand bands, 8. directly push up, 9. haulage ways, 10. open-off cut coal walls.
Specific embodiment
Alternate operating procedure of the filling without coal column continuous mining method of the hard and soft band in inclined seam goaf in the figure are as follows:
1. the about 30-60m of working face 5 that exceeds the time limit carries out anchor cable to track gallery 1 after inclined seam working face 5 is from open-off cut back production
Strengthening supporting；
2. carrying out first to goaf close to when directly pushing up 8 breaking down for the first time step pitch when 5 advance distance of inclined seam working face
Secondary lotion strip filling, the tendency arrangement of band 6 (multiple operation face 5), the non-back production side of 6 lower end of band to haulage way 9, band
6 upper ends to the back production side of track gallery 1,6 width of band are 3-10m, and ointment material is drift-sand, cement, flyash and diminishing
The mixture of agent composition, the ratio of mud 0.5；
3. drift-sand is transported to goaf via track gallery 1 using overturning carriage-type mine car 3, drift-sand is discharged by lotion
The U-shaped space for filling band 6, open-off cut coal wall 10 and 9 non-back production side lane side of haulage way composition is slipped certainly since drift-sand has
Property, which will be gradually filled with from bottom to top；
4. wall constructed to drift-sand filling item in 1 back production side of track gallery after drift-sand is full of above-mentioned inclination U-shaped space
7 upper end of band is closed, closing wall 4 construction material be 2. described in ointment material, closing wall 4 with a thickness of 3-
5m, close wall 4 on the outside of should with 2. described in 6 upper end of lotion band flush；
5. with constantly pushing ahead for working face 5,6 filling operation of lotion band, 7 filling operation of drift-sand band and aeolian accumulation
The work of constructing of sand filling 7 upper end closed wall 4 of band successively carries out, and the spacing of lotion band 6 should be less than the first of direct top 8
Caving angle.
It is described 1. in the advanced Anchor reinforced support parameter of track gallery 1: anchor cable diameter is 22mm, and anchor cable length is 4-
8m, between anchor cable, array pitch be respectively between former suspension roof support, 1-2 times of array pitch, anchorage cable anchoring mode is resin explosive roll the extensible bolting,
Design parameter presses size to determine according to Roof rock feature, back production height, mining depth and ground.
It is described 2. in lotion band 6 width and filling material proportion according to Roof rock feature, back production height, mining depth,
Size and Roof Control is pressed to require to determine in ground.
It is described 4. in closing wall 4 thickness according to Roof rock feature, back production height, mining depth, press size and lotion
Material mixture ratio determines.
It is described 5. in front of the filling of drift-sand band 7,8 need to directly push ups to locally broken goaf, and to carry out linked networks interim
Supporting guarantees the density of the directly integrality on top 8 and drift-sand filling band 7.
Claims (5)
1. after inclined seam working face (5) is from open-off cut back production, the working face that exceeds the time limit (5) about 30-60m to track gallery (1) into
Row Anchor reinforced support；When inclined seam working face (5) advance distance is close to the directly breaking down for the first time step pitch on top (8), to adopting
Dead zone carries out first time lotion strip filling, band (6) tendency arrangement (multiple operation face (5)), and band (6) lower end is extremely transported flat
The non-back production side in lane (9), band (6) upper end to the back production side of track gallery (1), band (6) width are 3-10m, ointment material
For the mixture of drift-sand, cement, flyash and water-reducing agent composition, the ratio of mud 0.5；Then overturning carriage-type mine car is utilized
(3) drift-sand is transported to goaf via track gallery (1), drift-sand is discharged by paste body filling band (6), open-off cut coal wall
(10) and the U-shaped space of haulage way (9) non-back production side lane side composition, since drift-sand has from slipping property, the inclination U-shaped space
It will be gradually filled with from bottom to top；After drift-sand is full of above-mentioned inclination U-shaped space, wall is constructed in track gallery (1) back production side
Body (4) closes drift-sand filling band (7) upper end, and closing wall (4) construction material is the ointment material described in 2.,
Wall (4) are closed with a thickness of 3-5m, close on the outside of wall (4) should with 2. described in lotion band (6) upper end flush；With work
Face (5) is constantly pushed ahead, and lotion band (6) filling operation, (7) filling operation of drift-sand band and drift-sand fill band
(7) work of constructing of upper end closed wall (4) successively carries out, and the spacing of lotion band (6) should be less than directly pushing up collapsing for the first time for (8)
Fall step pitch.
2. the alternate filling of the hard and soft band in inclined seam goaf is without coal column continuous mining method according to claim 1；Its feature
Be: to the advanced Anchor reinforced support parameter of track gallery (1): anchor cable diameter is 22mm, and anchor cable length is 4-8m, between anchor cable,
Array pitch is respectively between former suspension roof support, 1-2 times of array pitch, and anchorage cable anchoring mode is resin explosive roll the extensible bolting, design parameter root
It is determined according to Roof rock feature, back production height, mining depth and ground pressure size.
3. the alternate filling of the hard and soft band in inclined seam goaf is without coal column continuous mining method according to claim 1；Its feature
Be: the width of lotion band (6) and the proportion of filling material according to Roof rock feature, back production height, mining depth, press size and top
Plate control requires to determine.
4. the alternate filling of the hard and soft band in inclined seam goaf is without coal column continuous mining method according to claim 1；Its feature
Be: closing wall (4) thickness according to Roof rock feature, back production height, mining depth, press size and lotion material mixture ratio true
It is fixed.
5. the alternate filling of the hard and soft band in inclined seam goaf is without coal column continuous mining method according to claim 1；Its feature
It is: before drift-sand band (7) filling, need to directly pushes up (8) to locally broken goaf and carry out linked network gib, guarantee
The directly density of the integrality on top (8) and drift-sand filling band (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471156.2A CN109322669B (en) | 2018-12-04 | 2018-12-04 | Method for alternately filling rigid and flexible strips in inclined coal seam goaf without coal pillars and continuously mining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811471156.2A CN109322669B (en) | 2018-12-04 | 2018-12-04 | Method for alternately filling rigid and flexible strips in inclined coal seam goaf without coal pillars and continuously mining |
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| Publication Number | Publication Date |
|---|---|
| CN109322669A true CN109322669A (en) | 2019-02-12 |
| CN109322669B CN109322669B (en) | 2021-02-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486082A (en) * | 2019-09-09 | 2019-11-22 | 河北充填采矿技术有限公司 | A kind of method that goaf different materials alternately fill |
| CN111156000A (en) * | 2020-04-07 | 2020-05-15 | 北京中矿创新联盟能源环境科学研究院 | Low seam coal-pillar-free retreating type coal mining method |
| CN111594263A (en) * | 2020-05-14 | 2020-08-28 | 山东康格能源科技有限公司 | Dry-wet combined gangue filling method |
| CN112412459A (en) * | 2020-12-17 | 2021-02-26 | 贵州大学 | Special strip type filling mining method |
| CN114165234A (en) * | 2022-02-11 | 2022-03-11 | 中煤科工能源科技发展有限公司 | Strip face pack mining method |
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| RU2068498C1 (en) * | 1994-01-10 | 1996-10-27 | Юлий Давидович Торф | Method of slant coal seams development |
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| CN102392644A (en) * | 2010-11-30 | 2012-03-28 | 淄博市王庄煤矿 | Stripped fluid expansion filling mining method for below middle thick coal seam |
| CN103939137A (en) * | 2014-05-07 | 2014-07-23 | 中国矿业大学 | Method for filling aeolian sand empty field of western desert mining area shallow coal seam |
| CN104948191A (en) * | 2015-07-15 | 2015-09-30 | 辽宁工程技术大学 | Method for preventing and treating rock burst by using filling mode |
| CN108757023A (en) * | 2018-07-09 | 2018-11-06 | 中国矿业大学 | A method of exploiting displacement coal column using spoil strip filling |
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2018
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Patent Citations (6)
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| RU2068498C1 (en) * | 1994-01-10 | 1996-10-27 | Юлий Давидович Торф | Method of slant coal seams development |
| RU2382883C1 (en) * | 2008-12-17 | 2010-02-27 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный горный институт имени Г.В. Плеханова (технический университет)" | Erection method of filling connection strap |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486082A (en) * | 2019-09-09 | 2019-11-22 | 河北充填采矿技术有限公司 | A kind of method that goaf different materials alternately fill |
| CN111156000A (en) * | 2020-04-07 | 2020-05-15 | 北京中矿创新联盟能源环境科学研究院 | Low seam coal-pillar-free retreating type coal mining method |
| CN111594263A (en) * | 2020-05-14 | 2020-08-28 | 山东康格能源科技有限公司 | Dry-wet combined gangue filling method |
| CN112412459A (en) * | 2020-12-17 | 2021-02-26 | 贵州大学 | Special strip type filling mining method |
| CN112412459B (en) * | 2020-12-17 | 2022-07-12 | 贵州大学 | Special strip type filling mining method |
| CN114165234A (en) * | 2022-02-11 | 2022-03-11 | 中煤科工能源科技发展有限公司 | Strip face pack mining method |
| CN114165234B (en) * | 2022-02-11 | 2022-04-29 | 中煤科工能源科技发展有限公司 | Strip face pack mining method |
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