CN104453996A - Upward layered wall type bag filling mining method - Google Patents

Upward layered wall type bag filling mining method Download PDF

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Publication number
CN104453996A
CN104453996A CN201410808533.2A CN201410808533A CN104453996A CN 104453996 A CN104453996 A CN 104453996A CN 201410808533 A CN201410808533 A CN 201410808533A CN 104453996 A CN104453996 A CN 104453996A
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China
Prior art keywords
filling
stope
mining
dead zone
wall type
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CN201410808533.2A
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Chinese (zh)
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CN104453996B (en
Inventor
宋嘉栋
柳小胜
周爱民
甯瑜琳
欧任泽
王长军
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Changsha Institute of Mining Research Co Ltd
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Changsha Institute of Mining Research Co Ltd
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Priority to CN201410808533.2A priority Critical patent/CN104453996B/en
Publication of CN104453996A publication Critical patent/CN104453996A/en
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Publication of CN104453996B publication Critical patent/CN104453996B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor
    • E21C41/22Methods of underground mining; Layouts therefor for ores, e.g. mining placers
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings
    • E21F15/005Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material

Abstract

The invention discloses an upward layered wall type bag filling mining method. A stope face is advanced in the side direction in a mining field, after ore removal is finished, an enclosure is formed along the overall length of a working face at the position a certain distance away from the stope face, a gob is separated into a reserved dead zone close to the stope face and an isolating dead zone far away from the stope face, bag filling is carried out in the isolating dead zone, roof contact is achieved, and after filling bodies are solidified, a next circulating mining process is carried out. During the next circulating mining process, the reserved dead zone serves as an explosion free face to be exploded, and stope filling is carried out according to the above steps. By means of the upward layered wall type bag filling mining method, the gob is treated with a bag filling method, ground pressure is controlled to create a working face for stope, and safe stope is achieved; operations are carried out in a small exposed space, and mining operation is continuous and high in efficiency; pillars are not needed, the resource recovery rate is high, and loss and dilution are small; the roof of the mining field can be effectively controlled, surface subsidence is avoided, water guiding fractures in the upper portion of the mining field are avoided, and groundwater resources and the ecological environment are protected.

Description

The packed method of mining by the way of filling of a kind of Upward slicing wall type
Technical field
The present invention relates to a kind of mining method, be specifically related to the packed method of mining by the way of filling of a kind of Upward slicing wall type.
Background technology
For level, gently inclined orebody that ore-rock stability is poor, extensively adopt panel caving method, gentle dip high-dipping ore deposit adopts slicing and caving method and upward ut and fill stoping, and breaking ore body adopts Upward drift stoping with backfill.Panel caving method and slicing and caving method are difficult to grasp control, and efficiency is low, and lumber consumption is large, and safety condition is poor.And upward ut and fill stoping mining is carried out under larger exposure, safety condition is poor, need stay a large amount of ore pillar, and ore losses is comparatively large, and need maintenance certain hour just can carry out back production after stope filling, operation is discontinuous, and efficiency is low, and mining cost is high.Upward drift stoping with backfill needs after adjacent admission passage filling body reaches some strength, ability back production, and is adopt the back production of tunnelling formula, and driling explosion cost is high, and efficiency is low, and ventilation condition is poor.Room-and-pillar method needs to stay a large amount of ore pillars, and ore pillar is difficult to reclaim.
Summary of the invention
The object of this invention is to provide the packed method of mining by the way of filling of a kind of Upward slicing wall type, can realize safety coal extraction, mining is continuous, and efficiency is higher.
Technical scheme of the present invention is: the packed method of mining by the way of filling of a kind of Upward slicing wall type, in stope, side direction advances stope, after having gone out ore deposit, in distance stope a distance, carry out enclosing along work plane total length, goaf is separated near the reserved dead zone of stope and the isolation dead zone away from stope, carry out packed filling in isolation dead zone and connect top, after body to be filled solidifies, then carrying out the mining of next circulation; During next circulation mining with reserved dead zone for explosion is carried out on the explosion scope of freedom, then by above-mentioned steps back production filling.
Described distance stope certain distance, refers to that, according to the firm situation of ore deposit rock, enclosing utensil is 0.1 ~ 5.0m from the distance by stope.Enclosing utensil can recycle, and namely before filling, is removed and re-starts installation by the enclosing utensil of a upper circulation.
A preferred enclosing method is: at distance stope 0.1 ~ 5m place, along work plane total length supporting strut, pillar installation specification is 0.2 ~ 2m/ root, mesh sheet is fixed at post inboard, pillar is individual prop, hydraulic prop, leading screw or wooden prop, mesh sheet is steel mesh reinforcement, gauze wire cloth, bamboo chip or plank, guarantees filling bag not external drum in stowing operation.Behind the good dead zone of enclosing, lay filling bag along work plane total length.
Before filling, Stope roof span is maximum, and now, the distance of obturation and work plane and stope expose span and be less than top board and allow to expose span.In each stage of mining with stowing, stope exposes span and is less than top board permission exposure span, otherwise, carry out enclosing immediately and packed filling.
Cutting lane across pitch or tendency arrange, corresponding stope across strike or move towards propelling.1 cutting lane can be arranged, to cut lane for starting point is one-sided or bilateral advances, back production filling in Slice stoping.Also many cutting lanes can be arranged in Slice stoping, to cut lane for starting point back production filling.
As a preferred mode, route is divided in stope, divide first and second phase drift stoping, first and second phase route interval is arranged, after first phase drift stoping, its dead zone is separated into isolation dead zone and a reserved dead zone, or be separated into and be positioned at middle isolation dead zone and two reserved dead zones of its both sides, in isolation dead zone, carry out packed filling and connect top, the second stage of route expands side explosion, whole fill after back production ore removal.
According to orebody thickness, can the complete thick individual layer primary excavation of ore body, also can layering repeatedly back production.
The inventive method is applicable to the mining with stowing of the ore body at the poor any inclination angle of ore-rock stability, overcomes panel caving method, slicing and caving method, upward ut and fill stoping, Upward drift stoping with backfill Problems existing, specifically:
(1) adopt packed filling treatment goaf, control ground pressure, for work plane is created in back production, realize safety coal extraction;
(2) this method operation under less exposed space, mining is continuous, and efficiency is high;
(3) do not consume timber, effectively can process the industrial wastes such as tailings;
(4) overcome in room and pillar stoping the problem staying a large amount of ore pillar, do not need pillar, resource recovery is high, and loss and dilution is little;
(5) effectively can control Stope roof, avoid surface subsidence, stope top does not produce water producing fractures, protection groundwater resources and ecological environment.
(6) continuous stoping filling can be realized, namely rely on obturation and the shore supports top board of initial set after filling, next step mining can be carried out immediately.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further details.
Fig. 1 is the packed method of mining by the way of filling schematic diagram of Upward slicing wall type of the present invention, and I-I is elevation, and II-II is plan view.
Fig. 2 is a detailed description of the invention schematic diagram of the inventive method, and I-I is elevation, and II-II is plan view, and III-III is lateral view, and A amplification is the A place enlarged drawing in I-I figure.
Fig. 3 is another detailed description of the invention schematic diagram of the inventive method, and adopt Two step mining, I-I is elevation, and II-II is plan view, and III-III is lateral view, and B amplification is the B place enlarged drawing in I-I figure.
Fig. 4 is the mining schematic diagram of the inventive method when being applied to lean ore body, and I-I is plan view (by the slanting angle of ore body), and II-II is lateral view, and III-III is elevation.
In figure: 1, layering lane along the pulse; 2, slice drift; 3, layering connection roadway; 4, filling tailgate along the pulse; 5, position, former cutting lane; 6, return air is gone up a hill or filling returnairshaft; 7, ore pass; 8, obturation; 9, ore body; 10, route to be adopted; 11, stope; 12, filling bag; 13, pillar; 14, steel mesh reinforcement; 15, reserved dead zone and the explosion scope of freedom; 16, dead zone is isolated; 17, a step extracting drift; 18, two step extracting drifts; 19, broken ore; 20, big gun hole.
Detailed description of the invention
Embodiment 1:
Certain copper mine, ore-rock stability is poor, and ore body thickness is about 30m, and trend is about 1000m, 70 °, inclination angle.Adopt the packed method of mining by the way of filling exploitation of Upward slicing wall type, the vertical orebody trend of stope is arranged, the wide 30m of stope, and long is orebody thickness, stage casing height 60m, segmentation height 10m, point floor height 3.3m.As shown in Figure 2.Back production one by one from side to opposite side in Slice stoping, after every bar drift stoping terminates, from namely will the route one determining deviation supporting wire thick stick column (density of pillar is 1m/ root) of back production, leading screw is made to have lateral pressure, goaf is separated into reserved dead zone and isolation dead zone, in leading screw column, overall height total length draws gauze wire cloth again, namely isolate dead zone between leading screw column and obturation and lay filling bag, carry out filling and connect top, after obturation is solidified, start the back production of next route, during this drift stoping with stud sides exposed face for the explosion scope of freedom, side blasting, after having gone out ore deposit, leading screw column is removed and reinstalls to stope opposite side, carry out filling again.
Adopt accurate engineering and comprise arteries and veins outer slice drift 2, layering lane 1, layering connection roadway 3, ore pass 7, filling returnairshaft 6 etc. along the pulse.
Driling explosion: adopt shallow hole drilling machine drill cutter lateral aperture, hole depth 2.2m, pitch-row 1.0m ~ 1.2m, minimum burden 0.8 ~ 1.2m.With non-filling space, side for scope of freedom explosion.Every bar route each circulation cutter 16, big gun hole, big gun hole count is 35% ~ 60% of traditional Upward drift stoping with backfill.Explosive consumption is 50% ~ 70% of traditional Upward drift stoping with backfill.
Roof timbering: behind the ore deposit that falls, carries out safe handling, depending on steady of roof situation, carries out supporting, controls stope span at any time, when stope span is greater than ore deposit rock permission exposure span, carries out filling.
Stope ventilation: freshly distinguished and admirablely enter layering lane along the pulse from slice drift arteries and veins, enters goaf or reserved dead zone, cleaning face.
Ore removal: directly unload after ore got by shovel in arteries and veins or the outer ore pass of arteries and veins, be transported to main chute through electric locomotive.
Filling: after having gone out ore, moves to the leading screw column of a upper admission passage filling and again props up from being about 0.3m place by the route exploited, gauze wire cloth fixed by pillar and roof and floor; Carry out the laying of filling bag again, carry out filling.Obturation setting time about 1 day, can carry out the back production of next route.
Embodiment 2:
Certain copper mine, ore-rock stability is poor, and ore body thickness is about 30m, and trend is about 1000m, 70 °, inclination angle.Adopt the packed method of mining by the way of filling exploitation of Upward slicing wall type, the vertical orebody trend of stope is arranged, the wide 30m of stope, and long is orebody thickness, stage casing height 60m, segmentation height 10m, point floor height 3.3m.As shown in Figure 3.In Slice stoping, divide extracting drift, route width is 3m, and length is orebody thickness, route adopts interval back production, after first phase drift stoping completes, its dead zone is separated into middle isolation dead zone and the reserved dead zone of both sides, middle packed filling, obturation back production second phase route again after solidifying.
Embodiment 3:
A kind of bauxite, ore body thickness is about 3m, 8 °, inclination angle, ore deposit rock moderately stable, calculates through rock mechanics, and stope allows the span exposed to be 4m.
When ore body adopts the packed method of mining by the way of filling of Upward slicing wall type, the vertical orebody trend in panel is arranged, divides stope in panel, and the vertical orebody trend of stope is arranged, stope moves towards long 60m, tendency plagioclase 50m.As shown in Figure 4.
Adopt cut journey to have: slice drift 2, along the pulse filling tailgate 4, along the pulse tailgate, return air go up a hill 6, cutting lane etc.
Back production filling: dig cutting lane along orebody strike in stope end, specification is that 4m × 3m(is wide × high), from work plane 1m place supporting strut, goaf is separated into reserved dead zone and isolation dead zone, post inboard overall height hangs gauze wire cloth or bamboo chip, and an intercolumniation is 1m/ root, filling bag is laid along cutting lane total length in bamboo chip, carry out filling, filling bag is controlled within bamboo chip, support back.After obturation is solidified, with the side direction exposed space stayed after filling for the scope of freedom, along the wide ore body of orebody strike back production 3m, after having adopted clearancen, stope is fixed the pillar of packed obturation and bamboo chip and move to 1m before work plane, supporting strut, fixing bamboo chip, install filling bag, and carry out filling, band obturation carries out the mining of next circulation again after solidifying.Stope is after packed filling, and by obturation roof supporting, stope top does not produce water producing fractures, protection surrounding water and earth's surface.
Driling explosion ore removal: adopt YT-28 hammer drill across strike Drilling 2m deep blasting hole, the explosion of 2# rock emulsion explosive, adopts 1m3 scraper to enter work plane ore removal after explosion.
Stope ventilation: fresh wind circulation is crossed slice drift and entered work plane, behind cleaning face, is back to main tailgate through filling tailgate along the pulse.

Claims (8)

1. the packed method of mining by the way of filling of Upward slicing wall type, is characterized in that:
In stope, side direction advances stope, after having gone out ore deposit, in distance stope a distance, carry out enclosing along work plane total length, goaf is separated near the reserved dead zone of stope and the isolation dead zone away from stope, carry out packed filling in isolation dead zone and connect top, after body to be filled solidifies, then carry out the mining of next circulation; During next circulation mining with reserved dead zone for explosion is carried out on the explosion scope of freedom, then by above-mentioned steps back production filling.
2. the packed method of mining by the way of filling of Upward slicing wall type according to claim 1, is characterized in that enclosing utensil is 0.1 ~ 5.0m from the distance by stope.
3. the packed method of mining by the way of filling of Upward slicing wall type according to claim 1, is characterized in that each stage at mining with stowing, and the distance of obturation and work plane and stope expose span and be less than top board and allow to expose span.
4. according to the packed method of mining by the way of filling of Upward slicing wall type one of claims 1 to 3 Suo Shu, it is characterized in that cutting lane across pitch or tendency arrange, corresponding stope across strike or move towards propelling.
5. according to the packed method of mining by the way of filling of Upward slicing wall type one of claims 1 to 3 Suo Shu, it is characterized in that in Slice stoping, arranging 1 cutting lane, to cut lane for starting point is one-sided or bilateral advances, back production filling.
6., according to the packed method of mining by the way of filling of Upward slicing wall type one of claims 1 to 3 Suo Shu, it is characterized in that arranging many cutting lanes in Slice stoping, to cut lane for starting point back production filling.
7. according to the packed method of mining by the way of filling of Upward slicing wall type one of claims 1 to 3 Suo Shu, it is characterized in that dividing route in stope, divide first and second phase drift stoping, first and second phase route interval is arranged, after first phase drift stoping, its dead zone is separated into isolation dead zone and a reserved dead zone, or be separated into and be positioned at middle isolation dead zone and two reserved dead zones of its both sides, in isolation dead zone, carry out packed filling and connect top, the second stage of route expands side explosion, whole fill after back production ore removal.
8., according to the packed method of mining by the way of filling of Upward slicing wall type one of claims 1 to 3 Suo Shu, it is characterized in that the complete thick individual layer primary excavation of ore body or layering repeatedly back production.
CN201410808533.2A 2014-12-24 2014-12-24 A kind of packed method of mining by the way of filling of Upward slicing wall type Expired - Fee Related CN104453996B (en)

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN104895566A (en) * 2015-06-15 2015-09-09 武汉科技大学 Mining method with residual ore recovery function
CN106437718A (en) * 2016-11-30 2017-02-22 长沙矿山研究院有限责任公司 Active roof-contacted two-step strip-filling mining method
CN106761858A (en) * 2017-01-09 2017-05-31 广东安元矿业勘察设计有限公司 The supporting back production of stull open-stope method and filling new technology
CN106894838A (en) * 2017-02-21 2017-06-27 长沙矿山研究院有限责任公司 Large area insertion dead zone bag type partition substep filling administering method
CN109098715A (en) * 2018-08-14 2018-12-28 云南木利锑业有限公司 Packed filling mining method
CN111622803A (en) * 2020-07-29 2020-09-04 矿冶科技集团有限公司 Mining method for broken ore body
CN111894667A (en) * 2020-08-19 2020-11-06 长沙矿山研究院有限责任公司 Upward double-layered drift filling mining method for recoverable support shield of broken ore body
CN112014276A (en) * 2020-09-09 2020-12-01 长沙矿山研究院有限责任公司 Detection method for layered segregation degree of filling body and model construction method

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104895566A (en) * 2015-06-15 2015-09-09 武汉科技大学 Mining method with residual ore recovery function
CN104895566B (en) * 2015-06-15 2017-03-08 武汉科技大学 A kind of remnant reclaiming mining codes
CN106437718A (en) * 2016-11-30 2017-02-22 长沙矿山研究院有限责任公司 Active roof-contacted two-step strip-filling mining method
CN106437718B (en) * 2016-11-30 2018-04-13 长沙矿山研究院有限责任公司 Actively connect two step strip filling mining codes of top
CN106761858A (en) * 2017-01-09 2017-05-31 广东安元矿业勘察设计有限公司 The supporting back production of stull open-stope method and filling new technology
CN106894838A (en) * 2017-02-21 2017-06-27 长沙矿山研究院有限责任公司 Large area insertion dead zone bag type partition substep filling administering method
CN106894838B (en) * 2017-02-21 2019-10-18 长沙矿山研究院有限责任公司 Large area penetrates through dead zone bag type partition substep filling administering method
CN109098715A (en) * 2018-08-14 2018-12-28 云南木利锑业有限公司 Packed filling mining method
CN111622803A (en) * 2020-07-29 2020-09-04 矿冶科技集团有限公司 Mining method for broken ore body
CN111894667A (en) * 2020-08-19 2020-11-06 长沙矿山研究院有限责任公司 Upward double-layered drift filling mining method for recoverable support shield of broken ore body
CN112014276A (en) * 2020-09-09 2020-12-01 长沙矿山研究院有限责任公司 Detection method for layered segregation degree of filling body and model construction method
CN112014276B (en) * 2020-09-09 2021-09-21 长沙矿山研究院有限责任公司 Detection method for layered segregation degree of filling body and model construction method

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