CN107829736A - A kind of colliery Striping noise and filling displacement coal column method - Google Patents
A kind of colliery Striping noise and filling displacement coal column method Download PDFInfo
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- CN107829736A CN107829736A CN201710657663.4A CN201710657663A CN107829736A CN 107829736 A CN107829736 A CN 107829736A CN 201710657663 A CN201710657663 A CN 201710657663A CN 107829736 A CN107829736 A CN 107829736A
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- 239000003245 coal Substances 0.000 title claims abstract description 163
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 26
- 238000005065 mining Methods 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000013461 design Methods 0.000 claims description 16
- 238000011161 development Methods 0.000 claims description 13
- 238000000605 extraction Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
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- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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- 230000003612 virological effect Effects 0.000 description 1
- 239000002699 waste material Substances 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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- 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
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Abstract
The present invention relates to a kind of colliery Striping noise and filling displacement coal column method, including exploitation band working face to exploit with the first stage exploitation and displacement strip coal pillar for filling the mined out region of band with filling the second stage in the mined out region of strip coal pillar.The present invention can greatly improve mine recovery ratio to 60%~70% by the way of Striping noise and coal column displacement, and production zone surface subsidence amount is greatly reduced, and the stability of aquifer structure be safeguarded, so as to reach the purpose of " water protection mining ".
Description
Technical field
The present invention relates to a kind of technical field of coal exploitation, and in particular to a kind of colliery Striping noise and filling displacement coal column
Method.
Background technology
Since China opens small towns and individual colliery from the 1980s, most of small coal mines are using tradition
Backwardness old " house column type " coal-mining method, including：Fall pile formula, draw cave formula etc., its security is completely without guarantee.For
" specification ", " code ", " notice " are repeatedly assigned by specification small coal mines coal-mining method, State Administration of Quality and Technical Supervision,
Implementation is asked to have the wall type system coal-mining method of full exhaust ventilation system.Coal science research institute of Shaanxi Province has worked out " Shan within 2002
West saves small coal mines coal-mining method design ", to specification coal-mining method in being rectified in small coal mines, undergo technological transformation design, rises
Important guiding effect is arrived.Recent Shaanxi to old room pillar-and-panel work rectification on the basis of banning, the excessively following several classes of application
Coal-mining method：
(1) long wall with coal pillar coal-mining method.Its basic technical features is working face longwell arrangement, and longwell promotes.One kind is often to push away
Enter a segment distance, retain a part of coal column, form so-called " batch (-type) " and promote；One kind is to retain a part of coal column in goaf,
Working face open-off cut top is prevented with roof supporting.
(2) modern post and stall.It is primarily referred to as Introduced From Abroad continuous miner house column type coal-mining method, shortwall method
With prosperous lattice viral coal-mining method, and the modern pillar mining developed on this basis, dug with continuous miner or development machine
Lane room and pillaring, machinery coaling, use shuttle car or rubber-tired cart transport, suspension roof support or special automatic shifting stand to be main special
Sign.
(3) Strip mining and band coal caving mining method.This is domestic and international railways and water-bodies, in order to control surface subsidence,
A kind of widely used coal-mining method.For production zone by the way of similar longwell arrangement, upper and lower part border is respectively arranged return air
And haulage way, several exploitation bands are divided perpendicular to return air and haulage way, bar interband retains the coal column branch of one fixed width
Support plate, also it can retain the larger isolated coal pillar of a width after several Striping noises.Exploited using strap arrangements special thick
During coal seam, mined bed, and top coal of the let-down above it, referred to as band coal caving mining method can be arranged along seat earth.
At present, the transformation and upgrade substantially of the original small coal mines in Shaanxi Province are medium-sized mine, but by resource reserve and well type
Limitation, the coal-mining method of these mines are not greatly improved, and are especially in the Yulin in " water-retaining production " region
City's local mine, the improvement of its coal-mining method are more urgent.Monitoring in recent years shows that the earth's surface in some pillar-and-panel work regions is
Subsidence area is formed, shows that collapse instability has occurred for goaf part coal column, causes overlying basement rock disrumpent feelings, and it is aqueous to link up ground
Layer so that underground gushing water amount is increased sharply, and to mine safety production brings great harm, also the local ecological ring of heavy damage
Border.Therefore, it is necessary to the coal-mining method of northern Shensi local mine is optimized, it is necessary for the offer that makes smooth advances of " water protection mining "
Technical support.
The content of the invention
The purpose of the present invention is the deficiency being directed in existing production technique, there is provided a kind of colliery Striping noise is replaced with filling
The method of strip coal pillar, ensure that big deformation and failure does not occur for whole overlying strata, the stability of aquifer structure is safeguarded with this, from
And reach the purpose of " water protection mining ".
To achieve the above object, the invention discloses following technical scheme：
A kind of colliery Striping noise and filling displacement coal column method, comprise the following steps：
S1 exploits band working face and exploited with filling the first stage in the mined out region of band：
Using longwall systems band coal-mining method, i.e. mining system is arranged using longwell, and band is used in work plane system
Exploitation, pillar top plate and upper caldding layer are stayed, protect water-bearing layer；
Design first group of two band working face of exploitation, after treating two band working face minings, exploit second group two
Individual band working face, while first group of two mined out region of band is filled, by that analogy, until working face mining finishes, and will
The mined out region filling of all bands finishes；Selected during filling using earth's surface drift-sand, flyash, cement as filler, and water
Filled by a certain percentage with the obturation postponed；
S2 replaces strip coal pillar and exploited with filling the second stage in the mined out region of strip coal pillar：
1 strip coal pillar of each replacement exploitation, after a upper strip coal pillar is replaced, the next band coal of replacement exploitation
Post, and substep filling is carried out to the mined out region of a upper strip coal pillar, i.e., the lower area in the mined out region of strip coal pillar is first filled, then
The upper area in the mined out region of strip coal pillar is filled, successively remaining each strip coal pillar of displacement working face.
Further, in the step S1, exploitation band working face mining height is 4.0~4.5m, digs mode using machine, first digs
Go out excavated section top 3.0~3.5m scopes, when development machine exits, undercut extraction bottom 1.0m coal seams, reserved coal pillar height 4.0
~4.5m；It is higher for the design requirement of baffle plate in view of 4.0~4.5m of one-time filling height, using filling side stage by stage
Formula, i.e., bottom 2.0~2.5m scopes are first filled, refill top 1.5m~2.0m scopes.
Further, in the step S2, when strip coal pillar is exploited, by working face coal geology situation, driving is first excavated
Section top 3.0~3.5m scopes, and suspension roof support is carried out to top plate, when development machine exits, undercut extraction bottom 1.0m coal seams,
Substep filling is carried out to the mined out region of strip coal pillar, i.e., first fills the lower area in the mined out region of strip coal pillar, refills band
Working face remaining each strip coal pillar is completed in the upper area in the mined out region of coal column, successively displacement.
Further, in the step S2, to ensure filling effect, first fill strip coal pillar mined out region bottom 2.0~
2.5m height, after the obturation initial set of bottom, continue to fill the mined out region upper area of band to top is connect, to prevent from filling interval
Overlong time produces plane of weakness in filling interior strips.
Further, during the longwall systems band coal-mining method：Transported by underground panel main haulage roadway digging work face
Gallery, by underground panel return air main entry digging work face tailgate, passed through between working face haulage way and working face tailgate
It is logical, arrange Striping noise working face；Working face haulage way and working face tailgate spacing 80m, retain between working face 20m every
From coal column.
Further, in the step S1, during using working face Striping noise, using " adopting 7 to stay 8 " or " adopt 6 sides for staying 7 "
Formula carries out Striping noise, and the Striping noise parameter that each mine uses appropriately adjusts according to working seam preservation situation.
A kind of colliery Striping noise disclosed by the invention and filling displacement coal column method, have following
Beneficial effect：
By the way of the present invention is replaced using Striping noise and coal column, mine recovery ratio can be greatly improved to 60%~70%,
And production zone surface subsidence amount is greatly reduced, the stability of aquifer structure is safeguarded, so as to reach the purpose of " water protection mining ".
Brief description of the drawings
Fig. 1 is first group of exploitation 1. and 2. two band working face plans,
Fig. 2 is to exploit 3. and 4. two band working faces, and filling is 1. ' and 2. the mined out region lower area of ' two band is put down
Face figure,
Fig. 3 is to exploit 3. and 4. two band working faces, and filling is 1. ' and 2. the mined out region lower area of ' two band cuts open
Face figure,
Fig. 4 is to exploit 3. and 4. two band working faces, and filling is 1. ' and 2. the mined out region upper area of ' two band cuts open
Face figure,
Fig. 5 is to exploit 9. and 10. band working face, and filling is 7. ' and 8. ' the mined out region lower area plan of band,
Fig. 6 is to exploit 9. and 10. band working face, and filling is 7. ' and 8. ' the mined out region lower area profile of band,
Fig. 7 is No. 2 strip coal pillar plans of replacement exploitation,
Fig. 8 is No. 3 strip coal pillars of replacement exploitation and the filling mined out lower area of the region 2 ' plan of strip coal pillar,
Fig. 9 is No. 3 strip coal pillars of replacement exploitation and the filling mined out upper area of the region 2 ' profile of strip coal pillar,
Figure 10 is No. 11 strip coal pillars of replacement exploitation and the filling mined out lower area of the region 10 ' plan of strip coal pillar,
Figure 11 is No. 11 strip coal pillars of replacement exploitation and the filling mined out lower area of the region 10 ' profile of strip coal pillar.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
The core of the present invention is to provide a kind of method of colliery Striping noise and filling displacement strip coal pillar, and guarantee is entirely covered
Big deformation and failure does not occur for rock, and the stability of aquifer structure is safeguarded with this, so as to reach the purpose of " water protection mining ".
A kind of colliery Striping noise and filling displacement coal column method, comprise the following steps：
S1 exploits band working face and exploited with filling the first stage in the mined out region of band：
Using longwall systems band coal-mining method, i.e. mining system is arranged using longwell, and band is used in work plane system
Exploitation, pillar top plate and upper caldding layer are stayed, protect water-bearing layer；
Design first group of two band working face of exploitation, after treating two band working face minings, exploit second group two
Individual band working face, while first group of two mined out region of band is filled, by that analogy, until working face mining finishes, and will
The mined out region filling of all bands finishes；Selected during filling using earth's surface drift-sand, flyash, cement as filler, and water
Filled by a certain percentage with the obturation postponed；
S2 replaces strip coal pillar and exploited with filling the second stage in the mined out region of strip coal pillar：
1 strip coal pillar of each replacement exploitation, after a upper strip coal pillar is replaced, the next band coal of replacement exploitation
Post, and substep filling is carried out to the mined out region of a upper strip coal pillar, i.e., the lower area in the mined out region of strip coal pillar is first filled, then
The upper area in the mined out region of strip coal pillar is filled, successively remaining each strip coal pillar of displacement working face.
In an embodiment of the present invention, in the step S1, exploitation band working face mining height is 4.0~4.5m, is adopted
Mode to be dug with machine, first excavates excavated section top 3.0~3.5m scopes, when development machine exits, undercut extraction bottom 1.0m coal seams,
4.0~4.5m of reserved coal pillar height；It is higher for the design requirement of baffle plate in view of 4.0~4.5m of one-time filling height, adopt
With filling method stage by stage, i.e., bottom 2.0~2.5m scopes are first filled, refill top 1.5m~2.0m scopes.
In an embodiment of the present invention, in the step S2, when strip coal pillar is exploited, by working face coal geology feelings
Condition, excavated section top 3.0~3.5m scopes are first excavated, and suspension roof support is carried out to top plate, when development machine exits, undercut extraction
Bottom 1.0m coal seams, substep filling is carried out to the mined out region of strip coal pillar, i.e., first fill the lower region in the mined out region of strip coal pillar
Domain, the upper area in the mined out region of strip coal pillar is refilled, successively remaining each strip coal pillar of displacement completion working face.
In an embodiment of the present invention, in the step S2, to ensure filling effect, it is mined out first to fill strip coal pillar
2.0~2.5m of region bottom height, after the obturation initial set of bottom, continue fill the mined out region upper area of band to connect top,
It is long in filling interior strips generation plane of weakness to prevent from filling interval time.
In an embodiment of the present invention, during the longwall systems band coal-mining method：By underground panel main haulage roadway
Digging work face haulage way (haulage gate), by underground panel return air main entry digging work face tailgate (air return way),
Penetrated between working face haulage way and working face tailgate, arrange Striping noise working face；Working face haulage way and work
Face tailgate spacing 80m, 20m isolated coal pillars are retained between working face.
In an embodiment of the present invention, in the step S1, during using working face Striping noise, using " adopting 7 and stay 8 "
Or " adopting 6 stays 7 " mode to carry out Striping noise, and the Striping noise parameter that each mine uses is fitted according to working seam preservation situation
Work as adjustment.
The present invention is using Yulin Shang He collieries as point is implemented, and theory analysis shows, in view of the panel 3216 of upper river colliery two works
Face features as poor geologic condition, top plate are unstable, it is proposed that use and " adopt 7 to stay 8 " (mining height 4.5m) or " adopt 6 bands for staying 7 " (mining height 4.0m)
Operational parameter, concrete scheme at the scene according to top plate actual conditions choose by the type approval test stage, to ensure the length of strip coal pillar
Phase stability.Current coal market price significantly gets warm again after a cold spell, and according to rate in Yuyang county Chang Xing collieries filling mining into
This estimation, from the obturation after being prepared by a certain percentage with the fillers such as earth's surface aeolian sand, flyash, cement, and water
Cost can make the control of cost of ton coal value added, and at 100 yuan/ton or so, therefore, upper river Coal Exploitation is aided with filling with Striping noise and put
The mining type for changing strip coal pillar economically considers to be attempted.The coal of working face extraction is transported by working face
Gallery (haulage gate) arrives underground panel main haulage roadway.It is fresh it is distinguished and admirable by underground panel main haulage roadway through working face haulage way
(haulage gate) arrives Striping noise working face, and waste air is by working face tailgate (air return way) to underground panel return air main entry.
It may be noted that colliery Work Safety Supervision Bureau of country of general bureau is supervised " on carrying out special return air in small coal mines according to national security
The notice of well, wall coal method and support pattern reform " (2007 (216) number text), force to carry out wall coal method, it is desirable to
Small coal mines must use wall coal method, and coal-face necessarily be formed full exhaust ventilation system, and at least holding two is unimpeded
Extra exit, one leads to intake, and another leads to return aircourse, above-mentioned coal-mining method due to using longwall systems,
All meet above-mentioned regulation.
According to Field Research result, the upper working face geology condition of river colliery 3216 is poor, and top plate is unstable, and 3216 working faces are adopted
A height of 4.0~4.5m, stay and set 0.5~1m top coals.To the vibration influence of top plate, to be tunneled using development machine during avoiding big gun from adopting
Exploit band.When band working face tunnels, by working face coal geology situation, excavated section top 3.0~3.5m models are first excavated
Enclosing, and suspension roof support is carried out to top plate, when development machine exits, undercut extraction bottom 1.0m coal seams, reserved coal pillar height 4.0~
4.5m。
3216 working face open-off cut eye length 80m are designed, using based on " adopting 7 to stay 8 " (mining height 4.5m) or " adopt 6 and stay 7 " (mining heights
4.0m) the filling displacement coal column mode on the basis of the Striping noise of operational parameter.The whole recovery process of 3216 working faces is divided into two
The individual stage：First stage is exploitation band working face and the filling mined out regional stage of band, and second stage is displacement strip coal pillar
With filling the mined out regional stage of strip coal pillar.Band working face is exploited using machine pick mode, first excavate excavated section top 3.0~
3.5m scopes, when development machine exits, undercut extraction bottom 1.0m coal seams, 4.0~4.5m of reserved coal pillar height；3216 working faces fill
Higher for the design requirement of plate washer in view of 4.0~4.5m of one-time filling height when filling out, experimental stage uses fills stage by stage
Embankment formula, i.e., bottom 2.0~2.5m scopes are first filled, refill top 1.5m~2.0m scopes.
(1) first stage
First group of design exploitation 1. and 2. two band working faces, after treating two band working face minings, exploitation the
Two groups of 3. and 4. two band working faces, while fill first group two and adopt with mined out region 1. ' and 2. ', by that analogy, general
3216 working face minings are finished, and all mined out region fillings of band are finished.1. and 2. Fig. 1 is adopted for two for first group of exploitation
Band working face plan；3. and 4. Fig. 2 adopts band working face for two for second group of exploitation, while fills first group 1. ' and 2. ' two
The mined out region lower area plan of band.During filling, it is contemplated that design of 4.0~4.5m of one-time filling height for plate washer
It is required that higher, to ensure filling effect, design first fills the mined out region bottom of band 2.0~2.5m scopes, treats bottom as far as possible
After obturation initial set, continue to fill the mined out area top of band (prevents that fill interval time long produces in obturation to top is connect
Raw plane of weakness), it is exploited with stowing operation section as shown in Figure 3, Figure 4；Fig. 5 be exploit the first stage 9. and 10. band working face with
Filling is 7. ' and 8. the mined out region lower area plan of ' two band, its exploitation are as shown in Figure 6 with stowing operation section.
(2) second stage
Treat that the 3216 wide band working face minings of working face 6m or 7m finish, and after the mined out region filling of band, from No. 2
Strip coal pillar starts, each 1 strip coal pillar of replacement exploitation.When strip coal pillar is replaced, exploitation band coal is tunneled using development machine
Post.When strip coal pillar is exploited, by working face coal geology situation, excavated section top 3.0~3.5m scopes are first excavated, and to top
Plate carries out suspension roof support, and when development machine exits, undercut extraction bottom 1.0m coal seams.After No. 2 strip coal pillars are replaced, formed
No. 2 mined out regions 2 ' of strip coal pillar, then No. 3 strip coal pillars of replacement exploitation, and No. 2 mined out regions 2 ' of strip coal pillar are divided
Step filling, i.e., first fill the lower area in the mined out region 2 ' of strip coal pillar, the upper zone in the mined out region 2 ' of refilling strip coal pillar
Domain, 3216 working faces remaining each strip coal pillars is replaced successively.Fig. 7 is No. 2 strip coal pillar lower area coal body planes of replacement exploitation
Figure；Fig. 8 is No. 3 strip coal pillars of replacement exploitation and the filling mined out lower area of the region 2 ' plan of strip coal pillar；Fig. 9 opens for displacement
Adopt No. 3 strip coal pillars and the filling mined out upper area of the region 2 ' profile of strip coal pillar；Figure 10 is No. 11 band coals of replacement exploitation
Post lower area and the filling mined out lower area of the region 10 ' plan of strip coal pillar；Figure 11 is No. 11 strip coal pillars of replacement exploitation
Lower area and the filling mined out lower area of the region 10 ' profile of strip coal pillar.
It is summarized as follows：(1) 3216 working face open-off cut eye length 80m are designed, using based on " adopting 7 to stay 8 " (mining height 4.5m) or " adopt
6 stay the filling displacement coal column mode on the basis of the Striping noise of 7 " (mining height 4.0m) operational parameters.3216 working faces are entirely exploited
Process is divided into two stages：First stage is exploitation band working face and the filling mined out regional stage of band, and second stage is to put
Change strip coal pillar and the filling mined out regional stage of strip coal pillar.Band working face is exploited using machine pick mode, it is disconnected first to excavate driving
Face top 3.0~3.5m scopes, when development machine exits, undercut extraction bottom 1.0m coal seams, 4.0~4.5m of reserved coal pillar height；
3216 working faces fill when in view of 4.0~4.5m of one-time filling height for plate washer design requirement it is higher, experimental stage
Using filling method stage by stage, i.e., bottom 2.0~2.5m scopes are first filled, refill top 1.5m~2.0m scopes.
(2) exploit band working face and exploited with filling the first stage in the mined out region of band, design exploitation first group two
Band working face is adopted, after treating two band working face minings, exploits second group of two band working face, while fill first group
Two are adopted with mined out region, and by that analogy, 3216 working face minings are finished, and all mined out regions of band are filled in two steps
Complete complete.To ensure filling effect, design first fills mined out 2.0~2.5m of the region bottom height of band, treats that bottom is filled as far as possible
After filling out body initial set, continue to fill the mined out region upper area of band to top is connect, to prevent filling interval time long in filling bar
Band is internal to produce plane of weakness.
(3) replace strip coal pillar and exploited with filling the second stage in the mined out region of strip coal pillar, each 1 bar of replacement exploitation
Band coal column, after a upper strip coal pillar is replaced, the next strip coal pillar of replacement exploitation, and to the upper mined out region of a strip coal pillar
Substep filling is carried out, i.e., first fills the lower area in the mined out region of strip coal pillar, the top in the mined out region of refilling strip coal pillar
Region, 3216 working faces remaining each strip coal pillars is replaced successively.To ensure filling effect, design first fills strip coal pillar as far as possible
Mined out 2.0~2.5m of region bottom height, after the obturation initial set of bottom, continue to fill the mined out region upper area of band to connecing
Top, it is long in filling interior strips generation plane of weakness to prevent from filling interval time.
Compared to the content introduced in background technology, the present invention can be carried significantly by the way of Striping noise and coal column displacement
Production zone surface subsidence amount is greatly reduced to 60%~70% in high mine recovery ratio, safeguards the stability of aquifer structure,
So as to reach the purpose of " water protection mining ".
Described above is only the preferred embodiment of the present invention, rather than its limitations；It should be pointed out that although with reference to above-mentioned each
The present invention is described in detail embodiment, it will be understood by those within the art that, it still can be to above-mentioned each
Technical scheme described in embodiment is modified, or carries out equivalent substitution to which part or all technical characteristic；And this
A little modifications and replacement, do not make the essence of corresponding technical scheme depart from the scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a kind of colliery Striping noise and filling displacement coal column method, it is characterised in that comprise the following steps：
S1 exploits band working face and exploited with filling the first stage in the mined out region of band：
Using longwall systems band coal-mining method, i.e. mining system is arranged using longwell, and Striping noise is used in work plane system,
Pillar top plate and upper caldding layer are stayed, protects water-bearing layer；
Design first group of two band working face of exploitation, after treating two band working face minings, exploit second group of two bar
Band working face, while first group of two mined out region of band is filled, by that analogy, until working face mining finishes, and will be all
The filling of band mined out region finish；Selected during filling using earth's surface drift-sand, flyash, cement as filler, and water presses one
Certainty ratio is matched somebody with somebody the obturation postponed and filled；
S2 replaces strip coal pillar and exploited with filling the second stage in the mined out region of strip coal pillar：
1 strip coal pillar of each replacement exploitation, after a upper strip coal pillar is replaced, the next strip coal pillar of replacement exploitation, and
Substep filling is carried out to the mined out region of a upper strip coal pillar, i.e., first fills the lower area in the mined out region of strip coal pillar, refilling
The upper area in the mined out region of strip coal pillar, working face remaining each strip coal pillar is replaced successively.
2. a kind of colliery Striping noise according to claim 1 and filling displacement coal column method, it is characterised in that the step
In rapid S1, exploitation band working face mining height is 4.0~4.5m, digs mode using machine, first excavates 3.0~3.5m of excavated section top
Scope, when development machine exits, undercut extraction bottom 1.0m coal seams, 4.0~4.5m of reserved coal pillar height；In view of one-time filling
4.0~4.5m height is higher for the design requirement of baffle plate, using filling method stage by stage, i.e., first fills 2.0~2.5m of bottom
Scope, refill top 1.5m~2.0m scopes.
3. a kind of colliery Striping noise according to claim 1 and filling displacement coal column method, it is characterised in that the step
In rapid S2, when strip coal pillar is exploited, by working face coal geology situation, excavated section top 3.0~3.5m scopes are first excavated, and
Suspension roof support is carried out to top plate, when development machine exits, undercut extraction bottom 1.0m coal seams, and the mined out region of strip coal pillar is divided
Step filling, i.e., the lower area in the mined out region of strip coal pillar is first filled, refill the upper area in the mined out region of strip coal pillar, according to
Remaining each strip coal pillar of secondary displacement completion working face.
4. a kind of colliery Striping noise according to claim 1 and filling displacement coal column method, it is characterised in that the step
In rapid S2, to ensure filling effect, mined out 2.0~2.5m of the region bottom height of strip coal pillar is first filled, at the beginning for the treatment of bottom obturation
After solidifying, continue to fill the mined out region upper area of band to top is connect, to prevent filling interval time long in filling interior strips
Produce plane of weakness.
5. a kind of colliery Striping noise according to claim 1 and filling displacement coal column method, it is characterised in that the length
During wall system band coal-mining method：By underground panel main haulage roadway digging work face haulage way, by underground panel return air main entry
Digging work face tailgate, penetrated between working face haulage way and working face tailgate, arrange Striping noise working face；Work
Make face haulage way and working face tailgate spacing 80m, retain 20m isolated coal pillars between working face.
6. a kind of colliery Striping noise according to claim 1 and filling displacement coal column method, it is characterised in that the step
In rapid S1, during using working face Striping noise, using " adopt 7 stay 8 " or " adopt 6 stay 7 " by the way of carry out Striping noise, each mine is adopted
Striping noise parameter appropriately adjusts according to working seam preservation situation.
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| CN109798148A (en) * | 2019-01-23 | 2019-05-24 | 西安科技大学 | A kind of coal mine strip filling exploitation self-pulling type baffle |
| CN109882239A (en) * | 2019-03-27 | 2019-06-14 | 中国矿业大学 | A kind of outdoor end side pressure emanant filling mining method of coal |
| CN110295905A (en) * | 2019-07-15 | 2019-10-01 | 中国矿业大学 | A kind of accurate broken coal filling mining method of the high pressure water of inclined seam |
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| CN113513345B (en) * | 2021-08-16 | 2022-04-12 | 中国矿业大学(北京) | Method for reducing protective coal pillar by filling and reinforcing along with withdrawing of support |
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