CN103032070A - Boundary-controlled room column type sublevel open stoping subsequent stage filling mining method - Google Patents
Boundary-controlled room column type sublevel open stoping subsequent stage filling mining method Download PDFInfo
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Abstract
The invention discloses a boundary-controlled room column type sublevel open stoping subsequent stage filling mining method which is used for slight pitch-steep pitch very thick and big ore bodies with firm surrounding rocks of upper plates and lower plates. The method is characterized by comprising the following steps of: dividing a plate area of the ore body, incessantly dividing three ore rooms and two ore columns in the plate area, performing step-like retrusive sublevel rock drilling stage ore removal from an upper plate to a lower plate of the ore body by adopting bottom structures of V-shaped trenches, and connecting sublevel fringe drifts through a service raise; during mining of the ore rooms, respectively tunneling rock drilling cross drifts on the two sides of a stope, controlling the boundary of the stope by adopting pre-splitting blasting in side holes, arranging ore removal routes in the ore columns for ore removal, leaving a first sublevel in the middle ore room without mining, and performing top tight filling by adopting cemented bodies with different mixture ratios; and during the mining of the ore columns, tunneling the rock drilling cross drift at the center of the stope, arranging bilateral ore removal routes in the reserved sublevel in the middle ore room for serving the two ore columns for ore removal, and performing the top tight filling on the ore columns by adopting non-cemented bodies. The method has the advantages of high safety, great production capacity, low operation cost and low loss and dilution rate of ores.
Description
Technical field
The invention belongs to the mining technique field, relate to the afterwards stage method of mining by the way of filling of a kind of control circle house column type sublevel open stoping, the method mainly is applicable to the firm gentle dip of upper lower burrs country rock～high-dipping utmost point big thick ore body.
Technical background
When the gentle dip that at present the upper lower burrs country rock is firm～high-dipping utmost point big thick ore body adopts traditional minute mineral building ore pillar sublevel drill and benching ore removal afterwards filling mining method, the mineral building back production can be by the rock drilling ore removal crosscut in ore pillar to mineral building driving ore removal route ore removal, yet after the complete filling of mineral building back production again during stooping pillaring, must in the obturation of mineral building, excavate the ore removal crosscut then to ore pillar driving ore removal route ore removal, have serious potential safety hazard this moment.
Summary of the invention
The technical problem to be solved in the present invention is for the firm gentle dip of upper lower burrs country rock～high-dipping utmost point big thick ore body, has proposed the afterwards stage method of mining by the way of filling of a kind of safe, production capacity is large, operating cost is low, the poor damage of resource is little control circle house column type sublevel open stoping.
Technical solution of the present invention is as follows:
(1) the ore body pillar is divided into the panel, divide the continuous stoping unit in the panel, the stopping sequence of carrying out " adopting one every one " the room post of digging up mine again of namely digging up mine first, three mineral buildings of layout and two ore pillars in the panel in, stope length is orebody thickness, is linked to each other by the outer inclined shaft of connecting taxiway and arteries and veins between the segmentation.
When (2) mineral building is exploited, respectively tunnel the rock drilling crosscut in the stope both sides, lateral opening employing presplit blasting control stope border, to mineral building driving ore removal route ore removal, the middle mineral building stays the first segmentation not exploit in ore pillar; During Pillar mining, in stope central authorities driving rock drilling crosscut, in reserving the segmentation ore body, middle mineral building to both sides ore pillar driving bilateral ore removal route, serves the ore removal of two ore pillars.
(3) adopt the YGZ-90 hammer drill medium-length hole of in rock drilling crosscut, rock drilling Ji Kuang crosscut, rock drilling ore removal crosscut, constructing, first take the ventilation upward incise as the scope of freedom along the full section of stope pull open form fall ore deposit passage and compensating space in blasting after, the segmentation lateral caving is descended in upper segmentation in advance, and each minute is intersegmental from the once step-like drawing back of ore body dish.
(4) the classified tailings adhesive bond top tight filling of different proportionings, the non-adhesive bond filling of the complete rear employing of pillar recovery are adopted in the mineral building back production after complete from bottom to top.
Beneficial effect
(1) stoping safety is high
Stope rock drilling, powder charge, explosion, ore removal all reach under prop under the stable back, not operation in the goaf; Adopt the panel structure of two ore pillars of three mineral buildings, during middle mineral building back production, next segmentation is not exploited, give over to the ore pillar stage to arrange ore removal crosscut and ore removal route during ore removal, thus safe ore removal when guaranteeing pillar recovery.
(2) mining cost is low
The single proportioning filling that changes mineral building be polygamy than filling, save filling cost; Adopt People's Bank of China's inclined shaft connection segment gallery, the rock drilling crosscut relative jumbo of section is little when using simultaneously the YGZ-90 hammer drill, has reduced to adopt and has cut ratio, the corresponding reduction of mining cost.
(3) Ore loss and dilution rates is low
The mineral building stope adopts rock drilling control border, two rock drilling crosscuts, adopts simultaneously smooth Surface Blasting Technology to avoid the explosion of ore pillar is damaged and the cutting impact, keeps smooth smooth crag, during Pillar mining, and both sides cemented fill roof supporting, the loss and dilution rate is low.
Description of drawings
Fig. 1 is mining methods structural representation of the present invention
Fig. 2 is the B-B sectional drawing of Fig. 1
Fig. 3 is the C-C sectional drawing of Fig. 1
Fig. 4 is the D-D sectional drawing of Fig. 1
Among the figure: 1-stage haulage way, 2-connection roadway, 3-rock drilling ore removal crosscut, 4-ore removal route, 5-rock drilling Ji Kuang crosscut, 6-ore removal crosscut, 7-People's Bank of China inclined shaft, 8-ore pass, 9-slice drift, 10-rock drilling crosscut, 11-cuts vent (-escape) raise, 12-filling tailgate, 13-filling return air connection roadway, 14-upper centripetal deep hole, 15-ore body, the 16-obturation, 17-ore, 18-filling counterfort
The specific embodiment
The concrete use case of the mining methods that the present invention proposes is:
(1) the ore body pillar is divided into the panel, in the panel free of discontinuities arrange three wide be the mineral building of 15m, two are wide is the ore pillar of 12m, stope length is orebody thickness, the stopping sequence of implementation " adopting every " the room post of digging up mine again of namely digging up mine first; The long 69m in panel, the high 60m that hangs down, the segmentation high 10m that hangs down, between the segmentation by connecting taxiway and arteries and veins outward inclined shaft link to each other.
(2) adopt accurate engineering: stage haulage way 1 → connection roadway 2 → rock drilling ore removal crosscut 3 → ore removal route, 4 → rock drilling Ji Kuang crosscut, 5 → ore removal crosscut, 6 → People's Bank of China inclined shaft 7 → ore pass 8 → slice drift 9 → rock drilling crosscut 10 → cutting vent (-escape) raise 11 → tailgate 12 → return air connection roadway 13, the tunnel size is decided according to concrete ore removal equipment size and YGZ-90 hammer drill working space.
(3) driling explosion: adopt in rock drilling crosscut, rock drilling Ji Kuang crosscut, rock drilling ore removal crosscut, the construct medium-length hole of aperture 60～65mm of YGZ-90 hammer drill, big gun hole array pitch 1.2～1.4m, distance 2.2～2.4m at the bottom of the hole; Adopt the 2# rock explosive, take the ventilation upward incise as the scope of freedom, pull open along the full section of stope, after the full section of stope pulls open, every separate explosion 3～4 rows, from the once step-like drawing back of ore body dish, segmentation 4～6m is descended in upper segmentation in advance.
(4) stopping sequence: during the mineral building exploitation, respectively tunnel the rock drilling crosscut in the stope both sides, lateral opening employing presplit blasting control stope border, to mineral building driving ore removal route ore removal, the middle mineral building stays the first segmentation not exploit in ore pillar; During Pillar mining, in stope central authorities driving rock drilling crosscut, in reserving segmentation, middle mineral building to both sides ore pillar driving bilateral ore removal route, is used for the ore removal of two ore pillars.
(5) stope ventilation: fresh distinguished and admirable by level haulage gallery → People's Bank of China's inclined shaft → slice drift → connecting taxiway → stope; The dirty wind of stope is through the higher slice connecting taxiway or by the full section kerve of cutting vent (-escape) raise → filling return air connection roadway → filling tailgate → earth's surface; In the undesirable location of ventilation effect, take local fan ventilation.
(6) stope filling: ore drawing in stope is complete, builds filling gear mast by laying bricks or stones, carries out filling behind the suspension filling dehydrating tube; The mineral building Fill blending ratio is cement-sand ratio 1: 4, cement-sand ratio 1: 8, cement-sand ratio 1: 10, and cementitious materials is the 325# Portland cement, and ore pillar adopts Non cemented filling.
(7) Main Economic technical indicator: production capacity of mining field is 595.7t/d, and panel production capacity is 700～900t/d, and ore loss ratio is 7%, and ore dilution rate is 5.5%, adopts and cuts than being 13.92 standard m/kt (or 55.69m
3/ kt), the rock drilling work efficiency is the 35m/ machine-team, and explosive specific charge is 0.443kg/t, and the mining work efficiency is 121.9t/ work team; Mining cost (rock drilling, explosion, ore removal, filling) is 51.53 yuan/t.
The present invention emphasizes ore caving step and the distance that each minute is intersegmental, minute intersegmental realization is from the continuous retrusive lateral caving stage ore removal of ore body once step-like segmentation of dish in the panel, this method is safe, production capacity is large, operating cost is low, Ore loss and dilution rates is low, and a kind of control circle house column type sublevel open stoping that is specially adapted to the firm gentle dip of upper lower burrs country rock～high-dipping utmost point big thick ore body is the stage method of mining by the way of filling afterwards.
Claims (2)
1. control the afterwards stage method of mining by the way of filling of boundary's house column type sublevel open stoping for one kind, it is characterized in that:
With the ore body division panel, free of discontinuities is divided two ore pillars of three mineral buildings in the panel, all adopts " V " type moat ditch bottom structure to coil once step-like retrusive sublevel drill and benching ore removal of past lower wall from ore body, and the outer slice drift of arteries and veins links to each other by way shaft; During the mineral building exploitation, respectively tunnel the rock drilling crosscut in the stope both sides, ore removal route ore removal is arranged on lateral opening employing presplit blasting control stope border in ore pillar, and the middle mineral building stays the first segmentation not exploit, and adopts the adhesive bond top tight filling of different proportionings; During Pillar mining, in stope central authorities driving rock drilling crosscut, arrange bilateral ore removal route in middle mineral building is reserved segmentation, serve the ore removal of two ore pillars, ore pillar adopts non-adhesive bond top tight filling.
2. a kind of control circle house column type sublevel open stoping according to claim 1 stage method of mining by the way of filling afterwards, it is characterized in that: (1) is divided into the panel with the ore body pillar, divide the continuous stoping unit in the panel, the stopping sequence of carrying out " adopting one every one " the room post of digging up mine again of namely digging up mine first, arrange three mineral buildings and two ore pillars in the panel, stope length is orebody thickness, is linked to each other by the outer inclined shaft of connecting taxiway and arteries and veins between the segmentation; When (2) mineral building is exploited, respectively tunnel the rock drilling crosscut in both sides, lateral opening employing presplit blasting control stope border, to mineral building driving ore removal route ore removal, the middle mineral building stays the first segmentation not exploit in ore pillar; During Pillar mining, in stope central authorities driving rock drilling crosscut, in reserving segmentation, middle mineral building to both sides ore pillar driving bilateral ore removal route, serves the ore removal of two ore pillars; (3) adopt the long and medium hole drilling machine medium-length hole of in rock drilling crosscut, rock drilling Ji Kuang crosscut, rock drilling ore removal crosscut, constructing, first take the ventilation upward incise as the scope of freedom along the full section of stope pull open form fall ore deposit passage and compensating space in blasting after, the segmentation lateral caving is descended in upper segmentation in advance, and each segmentation is from the once step-like drawing back of ore body dish; (4) the classified tailings adhesive bond top tight filling of different proportionings, the non-adhesive bond filling of the complete rear employing of pillar recovery are adopted in the mineral building back production after complete from bottom to top.
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| CN103527200A (en) * | 2013-10-25 | 2014-01-22 | 河北省矾山磷矿有限公司 | Sill-pillar-free sublevel rhombus room subsequent filling mining method |
| CN103967494A (en) * | 2014-04-21 | 2014-08-06 | 安徽大昌矿业集团有限公司 | Mining method for filling after shallow hole shrinkage |
| CN104533517A (en) * | 2015-01-16 | 2015-04-22 | 中南大学 | High-segmentation upward deep hole ore extraction zero-dead-zone following filling mining method |
| CN104695960A (en) * | 2015-02-10 | 2015-06-10 | 山东黄金矿业（玲珑）有限公司 | Air column well completion back coming subsequent filling mining method |
| CN104727820A (en) * | 2015-04-07 | 2015-06-24 | 长沙有色冶金设计研究院有限公司 | Two-step sublevel open-stop and delayed filling mining method |
| CN105673072A (en) * | 2016-01-21 | 2016-06-15 | 华北理工大学 | Filling mining model after section-wise drilling flat bottom ore removal |
| CN106121648A (en) * | 2016-08-04 | 2016-11-16 | 西北矿冶研究院 | Sublevel open stoping chassis route ore drawing subsequent filling mining method |
| CN106437717A (en) * | 2016-11-21 | 2017-02-22 | 武汉理工大学 | Vertical deep hole twice ore drawing synchronous filling stage mining method |
| CN106837332A (en) * | 2017-03-03 | 2017-06-13 | 长沙矿山研究院有限责任公司 | Mechanization step room and pillar stoping |
| CN108643906A (en) * | 2018-04-17 | 2018-10-12 | 贵州开磷集团股份有限公司 | The method of mining by the way of filling in a kind of arteries and veins |
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| CN111894591A (en) * | 2020-07-16 | 2020-11-06 | 南华大学 | Collaborative mining method for inclined thick and large ore body panel and panel interval column |
| CN113622992A (en) * | 2021-08-13 | 2021-11-09 | 安徽金日晟矿业有限责任公司 | Bottom structure construction method of mine field filling body false bottom |
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2011
- 2011-10-09 CN CN 201110309372 patent/CN103032070A/en active Pending
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| CN114810079B (en) * | 2022-04-08 | 2023-02-28 | 紫金矿业集团股份有限公司 | Efficient ore removal structure at bottom of stope by stage open stope method and construction method thereof |
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| CN115539041B (en) * | 2022-06-08 | 2024-04-16 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Safe mining method for steeply inclined thin-to-medium-thickness broken ore body |
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Application publication date: 20130410 |