CN103362510B - Sublevel-drilling bench-combination ore-removal sublevel-room mining method - Google Patents
Sublevel-drilling bench-combination ore-removal sublevel-room mining method Download PDFInfo
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Abstract
The invention discloses a sublevel-drilling bench-combination ore-removal sublevel-room mining method. The sublevel-drilling bench-combination ore-removal sublevel-room mining method comprises the following steps of dividing inclined steeply-dipping medium-thickness ore which has ore stability or produces frequent inclination variation or produces dislocation because of fault into sections, arranging ore-removal levels at the bottoms of the sections, driving each one of the sections into ore zones along an ore formation direction, dividing each one of the ore zones into multiple segments, merging a part of the segments according to the ore conditions, arranging respectively ore removal structures at the bottoms of the merged segment and the independent segments, carrying out vertical middle-deep hole ore breaking in the segments, feeding the broken ore to the ore-removal levels by the ore removal structures, and after room mining, treating a gob by pillaring. The method provided by the invention fully utilizes advantages of a sublevel-room mining method and a vertical middle-deep hole Sublevel-drilling sublevel-room mining method and enlarges a sublevel-room mining method application range.
Description
Technical field
The present invention relates to a kind of mining methods of metalliferous deposit underground mining, specifically a kind of sublevel drilling section ore removal Sublevel room mining.Be applicable to that ore deposit rock is firm, change of pitch angle is frequent or because of the inclination high-dipping middle thickness orebody of fault movement.
Background technology
Metalliferous deposit mining methods have three major types: openstope method, caved stopes and the method for mining by the way of filling.According to domestic and international mining practices, in openstope method, widely used mining methods mainly contain: breast stoping, room and pillar stoping, shrinkage stoping, sub-level primary stoping and block chambering method.Block chambering method can be divided into again horizontal deep hole block chambering method, vertical long hole sublevel drilling block chambering method and vertical long hole spheric cartridge and to fall ore deposit block chambering method.
The inclination high-dipping middle thickness orebody that quarry rock is firm, what often adopt is sub-level primary stoping and vertical long hole sublevel drilling block chambering method.
Sub-level primary stoping divides some segmentations by nugget vertical direction; Each segment level is arranged mineral building and ore pillar, each segmentation adopt under ore transport from the discharging tunnel of each segmentation respectively, after sublevel mining room back production terminates, can this segmentation of back production immediately ore pillar and process goaf simultaneously.The method flexibility is large, and production capacity is strong, and in operation set, but adopt accurate engineering quantity greatly, roadway layout is complicated, is applicable in the firm inclination of quarry rock and high-dipping thick in thick ore body.
Vertical long hole sublevel drilling block chambering method tunnels segmentation tunnel and mineral building is divided into segmentation in mineral building, uses vertical medium-length hole ore blast.Before back production, except undercuting bottom mineral building, warding off leakage, form perpendicular cuts groove in mineral building central authorities or side, and as the scope of freedom, vertical fragmentation falls ore deposit; After back production terminates, stooping pillaring and process dead zone.The method has the advantages such as stoping strength is large, productivity ratio is high, mining cost is low, job safety, but require ore body and country rock contact surface regular, ore body is without stratification, and do not have the joint or interspersed zone of fracture that intermesh, is applicable to big thick ore body or the middle thickness orebody of exploiting high-dipping.
During frequent the or inclination high-dipping middle thickness orebody because of fault movement of, change of pitch angle firm at quarry rock, adopt separately above-mentioned two kinds of methods all can run into some technical problems.Adopt sub-level primary stoping, flexibility is comparatively large, can according to the change reasonable Arrangement segmentation of the slanting angle of ore body or changing of the relative positions position, ore losses and the rate of dilution lower, but require that each segmentation has fragmented transport tunnel, it is large to adopt accurate engineering quantity, and roadway layout is complicated; Adopt vertical long hole sublevel drilling block chambering method, although it is less to adopt accurate engineering quantity, very flexible, be difficult to the change adapting to the slanting angle of ore body or changing of the relative positions position, particularly when the slanting angle of ore body slows down, when ore body and country rock contact surface irregularity, the loss of ore and the rate of dilution can increase greatly.
The advantages and disadvantages shown during the inclination high-dipping middle thickness orebody that comprehensive analysis two kinds of methods are firm at exploitation quarry rock, change of pitch angle is frequently or because of fault movement, the two has strong complementarity, and this is that the invention of combined mining method provides technology space.
Summary of the invention
Technical problem to be solved by this invention is: overcome conventional vertical deep hole sublevel drilling block chambering method very flexible when exploiting the frequent or inclination high-dipping middle thickness orebody because of fault movement of country rock firm change of pitch angle, the loss of ore and the shortcoming such as the rate of dilution is large, improving sub-level primary stoping, to adopt accurate engineering quantity large, the deficiency of roadway layout complexity etc., by comprehensively analyzing the pluses and minuses that two kinds of methods exist when exploiting this Varied ore deposit, propose one and take full advantage of sub-level primary stoping and vertical long hole sublevel drilling block chambering method advantage separately, be applicable to the firm change of pitch angle of ore deposit rock frequent or because of the sublevel drilling of the inclination high-dipping middle thickness orebody of fault movement and section ore removal Sublevel room mining.
The present invention solves the problems of the technologies described above by the following technical programs: a kind of sublevel drilling section ore removal Sublevel room mining, comprises the steps:
(1), according to prospecting for mineral deposits degree, the firm situation of country rock, slanting angle of ore body change or changing of the relative positions situation factor, country rock is firm, change of pitch angle is frequent or divide the stage because of the inclination high-dipping middle thickness orebody of fault movement, in stage, across pitch divides nugget, is basic back production unit with nugget
(2), from level haulageway in studding upwards tunneling ventilation People's Bank of China go up a hill, be communicated with the level haulageway in upper stage; The direction which a grave faces mineral building driving sublevel drilling tunnel from ventilation People's Bank of China, nugget is divided into segmentation, and depending on ore body natural endowment situation, partial segments is merged, the sublevel drilling tunnel merging segmentation and independent segmented bottom is doubled as the tunnel that undercuts, in the middle of the tunnel that certainly undercuts, drives up slot raise; The direction which a grave faces foundation driving scraper tunnel from ventilation People's Bank of China; Dig dress ore deposit gallery from level haulageway to drop shaft direction, self-chambering ore deposit gallery drives up drop shaft, is communicated with scraper tunnel; Tunnel bucket to wear from scraper tunnel to both sides, wear from bucket and drive up filler neck,
(3), from filler neck, Drilling tilts upward the big gun hole neck that struggled against on top and expands as funnel; Expand side with the tunnel that undercuts for the scope of freedom and form pulling end space; To fetch water in slot raise flat medium-length hole, after layering explosion, form cutting groove,
(4), back production time, each segmentation is the scope of freedom with cutting groove, adopts vertical medium-length hole ore blast, and with elementary errors or second-delay blasting cap or detonator segment blast, every separate explosion 3 ~ 5 is arranged, upper and lower segmentation keep vertical operation face or upper segmentation advanced one explosive broken,
(5), back production broken ore falls in funnel by gravity, slips to stage ore removal level through scraper tunnel, in level haulageway and the gallery entrucking transport of dress ore deposit;
(6), after mineral building back production terminates, according to mine production planning timely stooping pillaring process goaf.
Outstanding technical characterstic of the present invention is:
1, take full advantage of sub-level primary stoping and vertical long hole sublevel drilling block chambering method advantage separately, define a kind of sublevel drilling and section ore removal Sublevel room mining.
2, be applicable to the firm occurrence of quarry rock change greatly or because of the inclination high-dipping middle thickness orebody of fault movement, by each back production segmentation of flexible arrangement and bottom ore structure, expand the sub-level primary stoping scope of application.
3, merge segmentation and be independent segmentedly all furnished with independently bottom ore structure, can back production simultaneously, ore removal, shortens the back production time of nugget, improves stoping strength and the labor productivity of nugget simultaneously.
4, the open-assembly time due to country rock is short, suitably can reduce the requirement to country rock steadiness.
Accompanying drawing explanation
Fig. 1 is sublevel drilling of the present invention and the structural representation of section ore removal Sublevel room mining.
Fig. 2 be sublevel drilling of the present invention and the inclination high-dipping middle thickness orebody of section ore removal Sublevel room mining time sublevel drilling section ore removal Sublevel room mining schematic diagram.
Be labeled as in figure:
1-ore body, 2-level haulageway, 3-fill ore deposit gallery, 4-drop shaft, 5-scraper tunnel, 6-big gun hole, 7-sublevel drilling tunnel, 8-undercut tunnel, 9-broken ore, 10-funnel.
Detailed description of the invention:
As depicted in figs. 1 and 2, sublevel drilling of the present invention section ore removal Sublevel room mining: comprise the steps: ore body 1 to be divided into the stage, across pitch divides nugget, and be basic back production unit with nugget, in studding, driving up specification from level haulageway 2 is 2.0 × 2.0m
2ventilation People's Bank of China go up a hill, be communicated with the level haulageway in upper stage; From ventilation People's Bank of China, the direction which a grave faces mineral building tunnels some specifications is 2.6 × 2.6m
2sublevel drilling tunnel 7, nugget is divided into segmentation, and determining section segmentation merges, the sublevel drilling tunnel 7 of segmentation and independent segmented bottom will be merged as the tunnel 8 that undercuts, in the middle of the tunnel 8 that certainly undercuts or side to drive up specification be 2.0 × 2.0m
2slot raise; From ventilation People's Bank of China, the direction which a grave faces foundation driving specification is 2.0 × 2.0m
2scraper tunnel 5; Digging specification from level haulageway 2 to drop shaft 4 direction is 2.0 × 2.0m
2dress ore deposit gallery 3, it is 2.0 × 2.0m that self-chambering ore deposit gallery 3 drives up specification
2drop shaft 4, be communicated with scraper tunnel 5; Specification 1.8 × 1.8m is tunneled from scraper tunnel 5 to both sides
2bucket wear, wear from bucket that to drive up specification is 2.0 × 2.0m
2filler neck; From filler neck, Drilling tilts upward the big gun hole neck that struggled against on top and expands as funnel 10; With the tunnel 8 that undercuts for expanding the pulling end space that side height of formation is 2.6m, width is orebody thickness in the scope of freedom; To fetch water in slot raise flat medium-length hole, after layering explosion, form that width is 5 ~ 8m, length is the cutting groove of orebody thickness; During back production, each segmentation take cutting groove as the scope of freedom, from the vertical medium-length hole ore blast of employing, broken ore 9 is fallen in funnel 10 by gravity, slip through scraper tunnel 5 to stage ore removal level, entrucking transport in level haulageway 2 and dress ore deposit gallery 3, mineral building back production terminates rear stooping pillaring process goaf.
Claims (1)
1. sublevel drilling a section ore removal Sublevel room mining, is characterized in that, comprise the steps:
(1), according to prospecting for mineral deposits degree, the firm situation of country rock, slanting angle of ore body change or changing of the relative positions situation factor, country rock is firm, change of pitch angle is frequent or divide the stage because of the inclination of fault movement or high-dipping middle thickness orebody, in stage, across pitch divides nugget, is basic back production unit with nugget
(2), from level haulageway in studding upwards tunneling ventilation People's Bank of China go up a hill, be communicated with the level haulageway in upper stage; The direction which a grave faces mineral building driving sublevel drilling tunnel from ventilation People's Bank of China, nugget is divided into segmentation, and depending on ore body natural endowment situation, partial segments is merged, the sublevel drilling tunnel merging segmentation and independent segmented bottom is doubled as the tunnel that undercuts, in the middle of the tunnel that certainly undercuts, drives up slot raise; The direction which a grave faces foundation driving scraper tunnel from ventilation People's Bank of China; Dig dress ore deposit gallery from level haulageway to drop shaft direction, self-chambering ore deposit gallery drives up drop shaft, is communicated with scraper tunnel; Tunnel bucket to wear from scraper tunnel to both sides, wear from bucket and drive up filler neck,
(3), from filler neck, Drilling tilts upward the big gun hole neck that struggled against on top and expands as funnel; Expand side with the tunnel that undercuts for the scope of freedom and form pulling end space; To fetch water in slot raise flat medium-length hole, after layering explosion, form cutting groove,
(4), back production time, each segmentation is the scope of freedom with cutting groove, adopts vertical medium-length hole ore blast, and with elementary errors or second-delay blasting cap or detonator segment blast, every separate explosion 3 ~ 5 is arranged, upper and lower segmentation keep perpendicular to work plane or upper segmentation advanced one explosive broken,
(5), back production broken ore falls in funnel by gravity, slips to stage ore removal level through scraper tunnel, in level haulageway and the gallery entrucking transport of dress ore deposit;
(6), after mineral building back production terminates, according to mine production planning timely stooping pillaring process goaf.
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| DD232171A3 (en) * | 1984-02-15 | 1986-01-22 | Funk A Bergbau Huettenkombinat | MINING METHOD |
| CN101967973B (en) * | 2009-07-28 | 2012-10-31 | 鞍钢集团矿业公司 | Open stope-caving combined mining method |
| CN101737053A (en) * | 2009-11-18 | 2010-06-16 | 灵宝市金源矿业有限责任公司 | Natural caving method suitable for slowly-inclined thick and large ore bodies |
| CN101881169A (en) * | 2010-06-25 | 2010-11-10 | 东北大学 | Sublevel shrinkage caving stage open stope afterwards filling mining method |
| CN102182461A (en) * | 2011-04-02 | 2011-09-14 | 山东黄金矿业（玲珑）有限公司 | Efficient mining method for thick metal ore body in slanting |
| CN103075156A (en) * | 2011-10-25 | 2013-05-01 | 周健 | Chessboard chamber pre-protection top upward middle-length hole ore-breaking segmented filling mining method |
| CN102418526A (en) * | 2011-12-02 | 2012-04-18 | 瓮福（集团）有限责任公司 | High-sublevel subdivision mining method of moderately thick heavy-pitch waste-rock-containing interlayer phosphate orebody along strike |
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| CN107725054A (en) * | 2017-08-18 | 2018-02-23 | 西北矿冶研究院 | Mining method of thin vein with changeable inclination angle |
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