CN106761743B - Continuous slitting pocket type fills room-and-pillar method dead zone stooping pillaring method - Google Patents
Continuous slitting pocket type fills room-and-pillar method dead zone stooping pillaring method Download PDFInfo
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- CN106761743B CN106761743B CN201710093425.5A CN201710093425A CN106761743B CN 106761743 B CN106761743 B CN 106761743B CN 201710093425 A CN201710093425 A CN 201710093425A CN 106761743 B CN106761743 B CN 106761743B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 continuous slitting pocket types to fill room-and-pillar method dead zone stooping pillaring method, comprising the following steps: dead zone is divided into dead zone band and comprising the ore pillar band of multiple ore pillars by a, according to ore pillar and dead zone situation；B, dead zone band is filled；C, the pillar recovery in ore pillar band is carried out after the dead zone band of ore pillar band two sides fills；D, step b and step c, the lower ore pillar band of back production are repeated；E, it completes in dead zone after all pillar recoveries, carries out ore pillar band and adopt rear Mined-out area disposal.Process for stoping is simple, high production efficiency；The ore pillar rate of recovery is high；Safety is good, environmental-friendly；It is at low cost.It is very thin to lean ore body suitable for room-and-pillar method pillar recovery and Mined-out area disposal, especially low-angle dip.
Description
Technical field
The present invention relates to mine ore pillar mining technique fields, particularly, are related to a kind of continuous slitting pocket type filling room-and-pillar method
Dead zone stooping pillaring method.
Background technique
Mine back production is carried out using room-and-pillar method, in order to support the top plate of excavation, the ore pillar of rule is stayed in barnyard.According to
Investigation, according to mining technique condition, when being exploited using Fuzzy measure theory method, general institute's pillar mine amount reaches the 5 of nugget mine amount
~30%, when ore value is not high, some can reach 40~60%.
The characteristic of mineral resources be it is non-renewable, with the continuous exploitation of mineral resources, oil in place is reduced year by year.Loss
Rate is very big, if not recycling, will cause the serious waste of resource.For the rate of extraction for increasing mineral resources, need to former mining process
In stay the ore pillar set carry out back production.
Existing room-and-pillar method pillar recovery scheme mainly has: extraction method cuts column method, the replacement of artificial pillar, fills heir comprehensively
Back production, Caving Method with Large Space back production etc. afterwards.
Extraction method: according to the distribution situation of ore pillar, back production only is carried out to part ore pillar.The rate of extraction be generally ore pillar 10~
50%, the rate of extraction is low, and back production carries out in dead zone, and dead zone top plate exposed area increased dramatically after back production, and safety is poor.
It cuts column method: ore pillar is whittled into the ore pillar of the shapes such as kidney-shaped, back taper.This stoping method is easy to operate, but recycles
Rate generally only has the 20%~50% of ore pillar, has been eliminated now as a kind of individual pillar recovery method.Since ore pillar is " thin
Body " seriously, is stablized and is deteriorated, there are security risks.
Artificial pillar replacement: constructing artificial pillar roof supporting, then stooping pillaring around to stooping pillaring, artificial to prop up
Constructing for column is at high cost, and construction technology is complicated, and when special orebody thickness is larger, it is greatly and at high cost to construct difficulty.
Filling afterwards back production comprehensively: first filling dead zone, and then driving adopts cutting journey and carries out mine in obturation
Column back production.Since the stope dead zone outlet after room-and-pillar method back production is more, barricade constructs that quantity is more, and project amount is big；Goaf needs whole
High-intensitive filling is carried out, filling cost is high；A large amount of obturation, tunnel in obturation need to be tunneled and be had bad luck to the process of stooping pillaring
Driving, branch maintenance difficulties are big.
On the whole, the back production safety of existing scheme is poor, loss late is big, process for stoping is complicated, back production low efficiency and return
It adopts at high cost.
Summary of the invention
The present invention provides a kind of continuous slitting pocket types to fill room-and-pillar method dead zone stooping pillaring method, to solve the existing pillars of a house
Method pillar recovery, the technical problem that safety is poor, loss late is big, process for stoping is complicated, back production low efficiency and stoping cost are high.
The present invention provides a kind of continuous slitting pocket type filling room-and-pillar method dead zone stooping pillaring method, comprising the following steps: a, root
According to ore pillar and dead zone situation, dead zone is divided into dead zone band and comprising the ore pillar band of multiple ore pillars；B, dead zone band is filled；
C, the pillar recovery in ore pillar band is carried out after the dead zone band of ore pillar band two sides fills；D, repeat step b and
Step c, the lower ore pillar band of back production；E, it completes in dead zone after all pillar recoveries, carries out ore pillar band and adopt rear Mined-out area disposal.
Further, the dead zone in step a divides, dead zone band and ore pillar band interphase distribution and continuous arrangement.Ore pillar
For at least one of a column, continuous strip column, studding, top pillar, foundation.Ore pillar band includes multiple ore pillars, dead zone band and
The shape of ore pillar band is linear type, shaped form or multistage line style combined strip band, so that more ore pillars are located at same ore pillar
Band so as to back production and improves back production scale.
Further, it is cementing to carry out pocket type to dead zone band according to the band of division for the filling dead zone band in step b
Filling, in dead zone, band is laid with filling bag, conveys filling slurry into filling bag so that filling bag obtain filling and it is automatic comprehensively
Top is connect, band forms filling support bar band in dead zone；According to dead zone band and filling process, the placement method of dead zone band is used
The comprehensive filling method of dead zone band, dead zone strip portion filling method, large span dead zone band at least one of slitting filling method again.
Further, the comprehensive filling method of dead zone band specifically: using dead zone band two sides ore pillar as enclosing when filling
And form the filling band at middle part；As ore pillar spacing < 3m, reinforced anchor bolt is beaten on ore pillar, mesh sheet is fixed on anchor pole；
As ore pillar spacing >=3m, pillar is added between ore pillar, and to reduce mesh sheet exposure span, reinforced anchor bolt is beaten on ore pillar, it will
Mesh sheet is fixed on anchor pole and pillar；After the good mesh sheet of enclosing, it is laid with filling bag along filling band overall length, is supported by two sides mesh sheet
Fill bag.
Further, dead zone strip portion filling method specifically: dead zone band is divided into the reserved space of two sides in
The filling band in portion carries out enclosing in filling band two sides；Support pillar, pillar installation rule are installed along filling band boundaries overall length
Lattice are 0.2m/ root~2m/ root, in the fixed mesh sheet of post inboard；After the good mesh sheet of enclosing, it is laid with filling bag along filling band overall length,
Filling bag is supported by two sides mesh sheet.
Further, large span dead zone band slitting filling method again specifically: dead zone band is divided into the hollow of middle part
The filling band of band and two sides；When filling band enclosing, side is beaten on ore pillar using ore pillar as ore pillar spacing < 3m
Mesh sheet is fixed on anchor pole by reinforced anchor bolt, and as ore pillar spacing >=3m, pillar is added between ore pillar, sudden and violent to reduce mesh sheet
Reveal span, reinforced anchor bolt is beaten on ore pillar, mesh sheet is fixed on anchor pole and pillar；The other side is along filling band boundaries overall length branch
Pillar is supportted, pillar installation specification is 0.2m/ root~2m/ root, and in the fixed mesh sheet of post inboard, support filling bag is in stowing operation
Not external drum；After the good mesh sheet of enclosing, it is laid with filling bag along filling band overall length, filling bag is supported by two sides mesh sheet.
Further, after the completion of preparation, the filling operation for filling bag can be started, using pipeline slurry to filling
It fills out bag to be filled, it is desirable that Tight filling；When filling, in order to reduce filling slurry to the lateral pressure of filling bag, prevent from filling
The damaged spillage of bag, according to dead zone height, filling slurry filling uses primary filling；Or filling slurry filling is using repeatedly progress
Filling, each packed height are 0.5m~4m, start to fill next time again after filling slurry final set.
Further, when ore body is nearly horizontal ore body, when filling bag filling will not the sliding of across strike direction when, using layering
Pocket type stacks the mode of filling, and along dead zone, short transverse is divided into multiple layerings, and filling bag height is dead zone layer height, filling
Bag height is 0.2m~2m；Filling band is not required to enclosing at this time, saves the filling that enclosing constructs step and directly carries out filling bag.
Further, filling bag specification is customized according to the bulk for filling band in the band of dead zone；According to dead zone band
Length, the plagioclase or dead zone band for filling a length of dead zone band of bag are divided into multistage along its length, fill a length of of bag
The section length of dead zone band；The width for filling bag is the width of dead zone strip filling part；Fill a height of dead zone band of bag
Highly；Fill the membrane material that bag material is geotechnological dry goods or the permeable impermeable aggregate for weaving dry goods.
Further, the pillar recovery in step c, specifically: after ore pillar band adjacent both sides dead zone strip filling,
And obturation maintenance reaches design strength 0.2MPa~2MPa, can start the actual mining of ore pillar；When pillar recovery, from mine
Column band one end is to other end back production or both ends to intermediate back production；After pillar recovery, the strip filling body roof supporting on both sides；Mine
When column bandwidth is larger, pillar recovery dead zone span is larger, and ore pillar band is divided into multiple bands along strip width direction
Back production is carried out, stooping pillaring subregion is filled according still further to the placement method of dead zone band.
Further, the Mined-out area disposal in step e, specifically: after ore pillar has been adopted in whole region, block all to be filled
Dead zone regional export, then fills dead zone, when filling, according to safety requirements, is starched using low intensive all-tailing cemented filling material
Or classified tailings filling；Or in whole region after ore pillar has been adopted, all dead zone regional exports to be filled are blocked, without filling
It fills out.
The invention has the following advantages:
The continuous slitting pocket type of the present invention fills room-and-pillar method dead zone stooping pillaring method, by after room-and-pillar method back production dead zone and ore pillar
Be respectively divided into continuous dead zone band and ore pillar band, after the strip filling of dead zone, ore pillar be located at the dead zone band after filling it
Between, without obturation between ore pillar in ore pillar band, when back production, can directly carry out back production from the both ends of ore pillar band, not need to dig
It adopts cutting journey into other and is tunneled in obturation, when pillar recovery, the scope of freedom is more, and the mine amount of onepull is big, can be same
When operation working face it is more, process for stoping is simple, high production efficiency.Dead zone band after filling effectively can support dead zone to push up
Plate can be recycled all using this method ore pillar, and the ore pillar rate of recovery is high.When pillar recovery, protected in continuously filling support bar band
Shield is lower to be carried out, can effective roof supporting, provide safety guarantee for pillar recovery.After pillar recovery, dead zone can be carried out
Filling comprehensively is conducive to protect earth's surface, and lithic drainage, regional geological environment etc., safety is good, environmental-friendly.It is only empty to part
Area is filled, and filling cost is shared less, at low cost.Suitable for room-and-pillar method pillar recovery and Mined-out area disposal, especially low-angle dip
It is very thin to arrive lean ore body.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart element of the continuous slitting pocket type filling room-and-pillar method dead zone stooping pillaring method of the preferred embodiment of the present invention
Figure；
Fig. 2 is the structural schematic diagram of the comprehensive filling method of dead zone band of the preferred embodiment of the present invention；
Fig. 3 is the A-A sectional view of Fig. 2；
Fig. 4 is the structural schematic diagram of the dead zone strip portion filling method of the preferred embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the large span dead zone band slitting filling method again of the preferred embodiment of the present invention.
Marginal data:
1, ore pillar；2, dead zone band；3, ore pillar band；4, bag is filled；5, filling slurry；6, pillar；7, stooping pillaring
Subregion；8, the quick-fried heap of ore pillar.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited by following and
The multitude of different ways of covering is implemented.
Fig. 1 is the flow chart element of the continuous slitting pocket type filling room-and-pillar method dead zone stooping pillaring method of the preferred embodiment of the present invention
Figure；Fig. 2 is the structural schematic diagram of the comprehensive filling method of dead zone band of the preferred embodiment of the present invention；Fig. 3 is the A-A sectional view of Fig. 2；
Fig. 4 is the structural schematic diagram of the dead zone strip portion filling method of the preferred embodiment of the present invention；Fig. 5 is the preferred embodiment of the present invention
The structural schematic diagram of large span dead zone band slitting filling method again.
As shown in Figure 1, the continuous slitting pocket type of the present embodiment fills room-and-pillar method dead zone stooping pillaring method, including following step
Rapid: dead zone is divided into dead zone band 2 and ore pillar band 3 comprising multiple ore pillars 1 by a, according to ore pillar 1 and dead zone situation；B, it fills
It fills a vacancy area's band 2；C, the ore pillar 1 carried out after the dead zone band 2 of 3 two sides of ore pillar band fills in ore pillar band 3 returns
It adopts；D, step b and step c, the lower ore pillar band 3 of back production are repeated；E, it completes in dead zone after all 1 back production of ore pillar, carries out ore pillar
Band adopts rear Mined-out area disposal.The continuous slitting pocket type of the present invention fills room-and-pillar method dead zone stooping pillaring method, after room-and-pillar method back production
Dead zone and ore pillar 1 are respectively divided into continuous dead zone band 2 and ore pillar band 3, and after dead zone band 2 fills, ore pillar 1 is located at filling
Between dead zone band 2 afterwards, without obturation between ore pillar 1 in ore pillar band 3, when back production, can be straight from the both ends of ore pillar band 3
Tap into row back production, do not need to tunnel it is other adopt cutting journey and tunneled in obturation, when 1 back production of ore pillar, the scope of freedom is more, one
The mine amount of separate explosion is big, can simultaneously operation working face it is more, process for stoping is simple, high production efficiency.2 energy of dead zone band after filling
Enough effective support dead zone top plates, can all be recycled, 1 rate of recovery of ore pillar is high using this method ore pillar 1.When 1 back production of ore pillar,
Continuous filling support bar band protection is lower to be carried out, can effective roof supporting, provide safety guarantee for 1 back production of ore pillar.Ore pillar 1
After back production, dead zone can be filled comprehensively, be conducive to protect earth's surface, lithic drainage, regional geological environment etc., safety
It is good, it is environmental-friendly.Only part dead zone is filled, filling cost is shared less, at low cost.Using mould pocket type filling method, filling
4 mould bags of bag can be process using membrane materials such as low-cost geotextiles, without constructing complexity, Gao Chengben filling counterfort.
It is reusable to fill 4 enclosing material of bag, reduces material consumption.Dead zone uses low intensive consolidated fill after 1 back production of ore pillar
Body and classified tailings, Mined-out area disposal are at low cost；Due to there is the support of continuous strip obturation, or even can not fill, it is ensured that
Dead zone safety.It is very thin to lean ore body suitable for room-and-pillar method pillar recovery and Mined-out area disposal, especially low-angle dip.Optionally, dead zone
Band 2 and/or ore pillar band 3 be of a straight line type, one of shaped form or multistage line style combined strip band.Optionally, in step b
Filling dead zone band 2, can using concrete block masonry, brick it is mixed build, the mixing of air bag slurry is built, filling bag be piled up, concrete
It pours, at least one of prefabricated board assembly.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, filling dead zone band 2 in step b, according to division
Band, to dead zone band 2 carry out pocket type consolidated fill.In dead zone, band 2 is laid with filling bag, conveys filling into filling bag 4
Slurry 5, so that filling bag 4 is filled and connects top comprehensively automatically.In dead zone, band 2 forms filling support bar band.According to dead zone
The placement method of band 2 and filling process, dead zone band 2 is filled using the comprehensive filling method of dead zone band 2,2 part of dead zone band
Method, large span dead zone band 2 again at least one of slitting filling method can according to ore pillar distribution situation, ore pillar span situation with
And dead zone situation, different slitting completion methods is selected, to form the filling bag of band subregion and safety convenient for 1 back production of ore pillar
4 fillings connect topmast support structure.After the filling of filling bag 4 forms the filling support bar band of strip in dead zone band 2, can effectively it prop up
Dead zone top plate is supportted, can all be recycled using this method ore pillar 1,1 rate of recovery of ore pillar is high.When 1 back production of ore pillar, continuously filling
The protection of support bar band is lower to be carried out, can effective roof supporting, provide safety guarantee for 1 back production of ore pillar.It is filled using mould pocket type
Method, filling bag mould bag can be process using the membrane materials such as low-cost geotextiles, without constructing complicated, high cost filling
Barricade.It is reusable to fill bag enclosing material, reduces material consumption.Dead zone cementing is filled using low intensive after pillar recovery
Body and classified tailings are filled out, Mined-out area disposal is at low cost；Due to there is the support of continuous strip obturation, or even can not fill, Ke Yibao
Demonstrate,prove dead zone safety.
As shown in Figure 1, Figure 2 and Figure 3, in the present embodiment, the comprehensive filling method of dead zone band 2 specifically: sky is utilized when filling
2 two sides ore pillar 1 of area's band as enclosing and formed middle part filling band.As 1 spacing < 3m of ore pillar, steel is broken on ore pillar 1
Muscle anchor pole, mesh sheet is fixed on anchor pole.As 1 spacing of ore pillar >=3m, pillar 6 is added between ore pillar 1, it is sudden and violent to reduce mesh sheet
Reveal span, beats reinforced anchor bolt on ore pillar 1, mesh sheet is fixed on anchor pole and pillar 6.After the good mesh sheet of enclosing, along filling band
Overall length is laid with filling bag 4, supports filling bag 4 by two sides mesh sheet.Optionally, mesh sheet is reinforced mesh.
As shown in Figure 1 and Figure 4, in the present embodiment, 2 part filling method of dead zone band specifically: be divided into dead zone band 2
The reserved space of two sides and the filling band at middle part carry out enclosing in filling band two sides.It is installed along filling band boundaries overall length
Pillar 6 is supported, 6 installation specification of pillar is 0.2m/ root~2m/ root, fixes mesh sheet on the inside of pillar 6.After the good mesh sheet of enclosing, edge is filled
It fills out band overall length and is laid with filling bag 4, filling bag 4 is supported by two sides mesh sheet.Optionally, mesh sheet is reinforced mesh.
As shown in Figure 1 and Figure 5, in the present embodiment, the slitting filling method again of large span dead zone band 2 specifically: by dead zone item
The filling band of the hollow band and two sides that are divided into middle part with 2.When filling band enclosing, side utilizes ore pillar 1, when ore pillar 1
When spacing < 3m, beat reinforced anchor bolt on ore pillar 1, mesh sheet be fixed on anchor pole, as 1 spacing of ore pillar >=3m, ore pillar 1 it
Between add pillar 6, with reduce mesh sheet exposure span, beat reinforced anchor bolt on ore pillar 1, mesh sheet be fixed on anchor pole and pillar 6.
The other side supports pillar 6 along filling band boundaries overall length, and 6 installation specification of pillar is 0.2m/ root~2m/ root, solid on the inside of pillar 6
Determine mesh sheet, support filling bag 4 not external drum in stowing operation.After the good mesh sheet of enclosing, it is laid with filling bag 4 along filling band overall length,
Filling bag 4 is supported by two sides mesh sheet.Optionally, mesh sheet is reinforced mesh.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, after the completion of preparation, can start to fill bag 4
Filling operation, using pipeline slurry to filling bag 4 fill, it is desirable that Tight filling.When filling, in order to reduce filling
The lateral pressure of 5 pairs of slurry filling bags 4 prevents the damaged spillage of filling bag 4, and according to dead zone height, the filling of filling slurry 5 uses one
Secondary filling.Optionally, for the filling of filling slurry 5 using repeatedly being filled, each packed height is 0.5m~4m, filling slurry 5
Start to fill next time again after final set.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, when ore body is nearly horizontal ore body, filling bag 4 is filled
When Shi Buhui across strike direction is slided, in such a way that layering pocket type stacks filling, along dead zone, short transverse is divided into multiple points
Layer, filling 4 height of bag are dead zone layer height, and filling 4 height of bag is 0.2m~2m.Filling band is not required to enclosing at this time, saves
Enclosing constructs step and directly carries out the filling of filling bag 4.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, filling 4 specification of bag is filled according in dead zone band 2
The bulk of band customizes.According to 2 length of dead zone band, the plagioclase or dead zone item of a length of dead zone band 2 of bag 4 are filled
Band 2 is divided into multistage along its length, fills the section length of a length of dead zone band 2 of bag 4.The width for filling bag 4 is dead zone item
Width with 2 pack portions；Fill the height of a height of dead zone band 2 of bag 4.Filling 4 material of bag is geotechnological dry goods or woven cloth
The membrane material of the permeable impermeable aggregate of class.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, 1 back production of ore pillar in step c, specifically: work as mine
After the adjacent both sides dead zone band 2 of column band 3 fills, and obturation maintenance reaches design strength 0.2MPa~2MPa
Start the actual mining of ore pillar 1.When 1 back production of ore pillar, from 3 one end of ore pillar band to other end back production or both ends to intermediate back production.
After 1 back production of ore pillar, the strip filling body roof supporting on both sides.When 3 width of ore pillar band is larger, ore pillar 1 return mined-out area span compared with
Greatly, ore pillar band 3 is divided into multiple bands along strip width direction and carries out back production, stooping pillaring subregion 7 is according still further to dead zone
The placement method of band 2 is filled.As shown in Fig. 2,3,4,5, explosion is carried out to ore pillar 1 one by one in ore pillar band 3 and is formed
The quick-fried heap 8 of ore pillar, and gradually export the quick-fried heap 8 of ore pillar.To improve efficiency.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, the dead zone in step a is divided, dead zone band 2 and mine
3 interphase distribution of column band and continuous arrangement, ore pillar 1 are at least one of point column, continuous strip column, studding, top pillar, foundation.
Mined-out area disposal in step e, specifically: after ore pillar 1 has been adopted in whole region, all dead zone regional exports to be filled are blocked, so
After fill dead zone, when filling, according to safety requirements, filled using low intensive all-tailing cemented filling material slurry or classified tailings.
Optionally, after ore pillar 1 has been adopted in whole region, all dead zone regional exports to be filled are blocked, without filling.After pillar recovery
Dead zone uses low intensive cemented fill and classified tailings, and Mined-out area disposal is at low cost.Due to there is the branch of continuous strip obturation
Support, or even can not fill, it is ensured that dead zone safety.
When implementation, a kind of continuous slitting pocket type filling room-and-pillar method dead zone stooping pillaring method is provided, specific implementation step is as follows:
(1) stope is arranged
According to ore pillar and dead zone situation, ore pillar and dead zone are divided into alternate continuous dead zone band and ore pillar band.
Ore pillar includes point column, continuous strip ore pillar, studding, top pillar and foundation etc..
(2) Filling mine-out area
According to the band of division, pocket type consolidated fill is carried out to dead zone band.According to dead zone band and filling process, dead zone
The placement method of band: 1) the comprehensive filling method of dead zone band；2) dead zone strip portion filling method；3) large span dead zone band divides again
Filling method.
1) the comprehensive filling method of dead zone band
Filling filling band two sides are that ore pillar using ore pillar as enclosing when filling beats reinforced anchor bolt on ore pillar comprehensively,
Mesh sheet is fixed on anchor pole；But as ore pillar spacing >=3m, pillar is added between ore pillar, reduces mesh sheet exposure span, net
The main function of piece is to support filling bag, behind the good dead zone of enclosing, is laid with along filling band overall length and fills bag.
2) dead zone strip portion filling method
Dead zone band is divided into two sides reserved space and middle part filling band, carries out enclosing, edge in filling band two sides
Filling band boundaries overall length installs support pillar, and pillar installation specification is 0.2~2m/ root, in the fixed mesh sheet of post inboard, mesh sheet
Main function be support filling bag, behind the good dead zone of enclosing, be laid with filling bag along filling band overall length.
3) large span dead zone band slitting filling method again
Dead zone band is divided into middle part dead zone band and two sides filling band, when filling band enclosing, side utilizes mine
Column beats reinforced anchor bolt on ore pillar, and reinforced mesh is fixed on anchor pole, but as ore pillar spacing >=3m, adds between ore pillar
If pillar；The other side supports pillar along filling band boundaries overall length, and pillar installation specification is 0.2m/ root~2m/ root, in pillar
Mesh sheet, support filling bag not external drum in stowing operation are fixed in side.Behind the good dead zone of enclosing, filling is laid with along filling band overall length
Bag.
Filling bag specification is customized according to the bulk that need to fill dead zone band, a length of dead zone plagioclase, and width is that need to fill sky
Area's strip width, a height of dead zone height.Fill the membrane material that bag material is the permeable impermeable aggregates such as geotextiles, woven cloth.
After the completion of filling preparation, filling operation can be started, filled using pipeline slurry, it is desirable that filling
Connect top.When filling, in order to reduce filling slurry to the lateral pressure of filling bag, filling bag breakage spillage is prevented, according to dead zone height
Degree be divided into it is one or many filled, each packed height 0.5m~4m starts to fill next time after filling slurry final set again.
When ore body is nearly horizontal ore body, when filling bag filling will not the sliding of across strike direction when, can be using layering bag
Formula stacks the mode of filling, and along dead zone, short transverse is divided into multiple layerings, and filling bag height is dead zone layer height, fills bag
Height is 0.2m~2m.Filling band is not required to enclosing at this time, can directly be filled.
(3) pillar recovery
After ore pillar band adjacent both sides dead zone strip filling, and obturation maintenance reach design strength (0.2~
2MPa.), the actual mining of ore pillar can be started.When pillar recovery, from ore pillar band one end to other end back production.Pillar recovery
Afterwards, the strip filling body roof supporting on both sides.
When ore pillar strip width is larger, dead zone span is larger after pillar recovery, can be by ore pillar band along strip width side
Back production is carried out to multiple bands are divided into, the dead zone after back production is filled according still further to the placement method of dead zone band, then again
The lower band of back production.
(4) Mined-out area disposal
After ore pillar has been adopted in whole region, all dead zone regional exports to be filled are blocked, then fill dead zone, when filling,
It, can be using low intensive all-tailing cemented filling material slurry or classified tailings filling according to safety requirements.
The continuous slitting pocket type fills room-and-pillar method dead zone stooping pillaring method, has the advantages that
(1) process for stoping is simple, high production efficiency.Dead zone after room-and-pillar method back production and ore pillar are respectively divided into continuous sky
Area's band and ore pillar band.After the strip filling of dead zone, ore pillar be located at filling after dead zone band between, in ore pillar band ore pillar it
Between without obturation, when back production, can directly carry out back production from the both ends of ore pillar band, do not need to tunnel it is other adopt cutting journey and
It is tunneled in obturation.When pillar recovery, the scope of freedom is more, and the mine amount of onepull is big；The working face of back production simultaneously is more, production
It is high-efficient.
(2) the ore pillar rate of recovery is high.Filling band can effectively support dead zone top plate, can be whole using this method ore pillar
Recycling.
(3) safety is good, environmental-friendly.When pillar recovery, carries out, can effectively support under continuously filling band protection
Top plate provides safety guarantee for pillar recovery.After pillar recovery, dead zone can be filled comprehensively, be conducive to protecting field
Table, lithic drainage, regional geological environment etc..
(4) at low cost.Only part dead zone is filled, filling cost is shared few.Using mould pocket type filling method, mould bag is adopted
It is process with membrane materials such as low-cost geotextiles, without constructing complexity, Gao Chengben filling counterfort.Enclosing material is repeatable
It utilizes, reduces material consumption.After pillar recovery dead zone use low intensive cemented fill and classified tailings, Mined-out area disposal at
This is low；Due to there is the support of continuous strip obturation, or even can not fill.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of continuous slitting pocket type fills room-and-pillar method dead zone stooping pillaring method, which is characterized in that
The following steps are included:
A, according to ore pillar (1) and dead zone situation, dead zone is divided into dead zone band (2) and ore pillar item comprising multiple ore pillars (1)
Band (3)；
B, dead zone band (2) are filled；
Filling dead zone band (2) in step b carries out pocket type consolidated fill to dead zone band (2) according to the band of division,
Dead zone band (2) is laid with filling bag, to bag (4) interior conveying filling slurry (5) is filled, so that filling bag (4) obtains filling simultaneously certainly
It is dynamic to connect top comprehensively；In dead zone, band (2) forms filling support bar band；
Bag (4) specification is filled to be customized according to the bulk of filling band in dead zone band (2)；
According to dead zone band (2) length, the plagioclase of a length of dead zone band (2) of bag (4) is filled；Or dead zone band (2) is along length
Degree direction is divided into multistage, fills the section length of a length of dead zone band (2) of bag (4)；
The width for filling bag (4) is the width of dead zone band (2) pack portion；Fill the height of a height of dead zone band (2) of bag (4)
Degree；
After the completion of preparation, can start fill bag (4) filling operation, using pipeline slurry to filling bag (4) into
Row filling, it is desirable that Tight filling；When filling, in order to reduce filling slurry (5) to the lateral pressure of filling bag (4), prevent from filling
The damaged spillage of bag (4), according to dead zone height, filling slurry (5) filling uses primary filling；Or filling slurry (5) filling is adopted
With repeatedly being filled, each packed height is 0.5m~4m, starts to fill next time again after filling slurry (5) final set；
When ore body is nearly horizontal ore body, when filling bag (4) filling will not the sliding of across strike direction when, filled using layering pocket type stacking
The mode filled out, along dead zone, short transverse is divided into multiple layerings, and filling bag (4) is highly dead zone layer height, and filling bag (4) is high
Degree is 0.2m~2m, fills band at this time and is not required to enclosing, saves the filling that enclosing constructs step and directly carries out filling bag (4)；
C, the ore pillar (1) carried out after the dead zone band (2) of ore pillar band (3) two sides fills in ore pillar band (3) returns
It adopts；
After the strip filling of dead zone, ore pillar is located between the dead zone band (2) after filling, nothing between ore pillar band (3) interior ore pillar (1)
Obturation directly carries out back production from the both ends of ore pillar band (3) when back production, does not need to tunnel and other adopts cutting journey and in obturation
Inside tunneled；When ore pillar (1) back production, the scope of freedom is more, and the mine amount of onepull is big；The working face of back production simultaneously is more, production effect
Rate is high；
D, step b and step c, the lower ore pillar band (3) of back production are repeated；
E, it completes in dead zone after all ore pillar (1) back production, carries out ore pillar band (3) and adopt rear Mined-out area disposal.
2. continuous slitting pocket type according to claim 1 fills room-and-pillar method dead zone stooping pillaring method, which is characterized in that
In the step b, according to dead zone band (2) and filling process, the placement method of dead zone band (2) uses dead zone band
(2) comprehensively filling method, dead zone band (2) part filling method, large span dead zone band (2) again in slitting filling method at least one
Kind.
3. continuous slitting pocket type according to claim 2 fills room-and-pillar method dead zone stooping pillaring method, which is characterized in that
The comprehensive filling method of the dead zone band (2) specifically:
When filling using dead zone band (2) two sides ore pillar (1) as enclosing and formed middle part filling band；
As ore pillar (1) spacing < 3m, reinforced anchor bolt is beaten on ore pillar (1), mesh sheet is fixed on anchor pole；
As ore pillar (1) spacing >=3m, pillar (6) are added between ore pillar (1), to reduce mesh sheet exposure span, in ore pillar (1)
It is upper to beat reinforced anchor bolt, mesh sheet is fixed on anchor pole and pillar (6)；
After the good mesh sheet of enclosing, it is laid with filling bag (4) along filling band overall length, filling bag (4) is supported by two sides mesh sheet.
4. continuous slitting pocket type according to claim 2 fills room-and-pillar method dead zone stooping pillaring method, which is characterized in that
Dead zone band (2) part filling method specifically:
Dead zone band (2) is divided into the reserved space of two sides and the filling band at middle part, carries out enclosing in filling band two sides；
Support pillar (6) is installed along filling band boundaries overall length, pillar (6) installation specification is 0.2m/ root~2m/ root, in pillar
(6) the fixed mesh sheet in inside；
After the good mesh sheet of enclosing, it is laid with filling bag (4) along filling band overall length, filling bag (4) is supported by two sides mesh sheet.
5. continuous slitting pocket type according to claim 2 fills room-and-pillar method dead zone stooping pillaring method, which is characterized in that
Large span dead zone band (2) slitting filling method again specifically:
Dead zone band (2) is divided into the hollow band at middle part and the filling band of two sides；
When filling band enclosing,
Side beats reinforced anchor bolt on ore pillar (1), mesh sheet is fixed on anchor using ore pillar (1) as ore pillar (1) spacing < 3m
On bar, as ore pillar (1) spacing >=3m, pillar (6) are added between ore pillar (1), to reduce mesh sheet exposure span, in ore pillar
(1) reinforced anchor bolt is beaten on, and mesh sheet is fixed on anchor pole and pillar (6)；
The other side is 0.2m/ root~2m/ root along filling band boundaries overall length support pillar (6), pillar (6) installation specification, is being propped up
Fixed mesh sheet on the inside of column (6), support filling bag (4) not external drum in stowing operation；
After the good mesh sheet of enclosing, it is laid with filling bag (4) along filling band overall length, filling bag (4) is supported by two sides mesh sheet.
6. continuous slitting pocket type according to any one of claim 1 to 5 fills room-and-pillar method dead zone stooping pillaring method, special
Sign is,
Fill the membrane material that bag (4) material is geotechnological dry goods or the permeable impermeable aggregate for weaving dry goods.
7. continuous slitting pocket type according to any one of claim 1 to 5 fills room-and-pillar method dead zone stooping pillaring method, special
Sign is,
Ore pillar (1) back production in the step c, specifically:
After ore pillar band (3) adjacent both sides dead zone band (2) filling, and obturation maintenance reaches design strength 0.2MPa
~2MPa can start the actual mining of ore pillar (1)；
When ore pillar (1) back production, from ore pillar band (3) one end to other end back production or both ends to intermediate back production；Ore pillar (1) back production
Afterwards, the strip filling body roof supporting on both sides；
When ore pillar band (3) width is larger, ore pillar (1) time mined-out area span is larger, by ore pillar band (3) along strip width direction
It is divided into multiple bands and carries out back production,
Stooping pillaring subregion (7) is filled according still further to the placement method of dead zone band (2).
8. continuous slitting pocket type according to any one of claim 1 to 5 fills room-and-pillar method dead zone stooping pillaring method, special
Sign is,
Dead zone in the step a divides, dead zone band (2) and ore pillar band (3) interphase distribution and continuous arrangement, ore pillar (1)
For at least one of a column, continuous strip column, studding, top pillar, foundation；
Mined-out area disposal in the step e, specifically:
After ore pillar (1) has been adopted in whole region, all dead zone regional exports to be filled are blocked, then fill dead zone, when filling, root
According to safety requirements, filled using low intensive all-tailing cemented filling material slurry or classified tailings；
Or in whole region after ore pillar (1) has been adopted, all dead zone regional exports to be filled are blocked, without filling.
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| CN112832854B (en) * | 2020-12-29 | 2022-05-03 | 河海大学 | Tailing filling auxiliary roof connecting device and construction method thereof |
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