CN100504028C - W trench type ore-gathering tunnel with bottom structure and forming process thereof - Google Patents
W trench type ore-gathering tunnel with bottom structure and forming process thereof Download PDFInfo
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- CN100504028C CN100504028C CNB2006100108064A CN200610010806A CN100504028C CN 100504028 C CN100504028 C CN 100504028C CN B2006100108064 A CNB2006100108064 A CN B2006100108064A CN 200610010806 A CN200610010806 A CN 200610010806A CN 100504028 C CN100504028 C CN 100504028C
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Abstract
The invention discloses a W-groove min channel and relative forming method. Wherein, drawing chute (4), well neck (5), and mined well (6) are horizontally distantly arranged at two sides of scraper channel (3); the upper ends of well necks in one side are connected to form a drawing channel (7), which is distantly distributed with cutting horizontal channel (9) and cutting air well (10); the cutting air well (10) is used as free surface, to distribute the cutting groove hole (12) according to the grid parameters to form the cutting groove; the cutting groove is used as free surface to drill the deep hole (11) with rock drill to be exploded synchronously with the deep hole (11) of upper mine sector to form the W-groove min channel mined well (6); and the ore via said mine well flows out with self gravity. The invention has simple, safe, and effective method, with lower loss rate.
Description
Technical field
The invention belongs to mining Technology Underground field, mine, being specifically related to a kind of W moat ditch type of various ore body conditions that is applicable to has polycrystalline substance to be subjected to tunnel, ore deposit and formation technology thereof.
Background technology
In the underground mining of mine, select different mining methods for use according to orebody occurrence, different mining methods, it is had nothing in common with each other by ore deposit mode, ore handling mode.What polycrystalline substance was arranged is subjected to the ore deposit method except that quick-fried power fortune ore deposit, generally all is to be subjected to the ore deposit by deadweight.Have polycrystalline substance to be subjected to the mining methods in ore deposit a lot, if any polycrystalline substance sublevel open stope method, block chambering method, shrinkage method, foundation avalanche method etc. is arranged, the tunnel, ore deposit that is subjected to of being adopted is divided into funneling, moat ditch formula and three kinds of primary structure forms of plain base.The funneling tunnel, ore deposit that is subjected to.Be applicable to various ore conditions, because less to the foundation cutting, its steadiness is better, and the ore deposit stack height that flows into the rake road is lower, is convenient to the slusher operation, is present most widely used form.But when safeguarding the rake road with log hut or metallic support, rake road and bucket are worn infall supporting difficulty, flow into the ore deposit heap in rake road, force the operation of slusher broken line, easily supporting are forgotten about it.And expand to leak, the work that undercuts uses shallow bore hole rock drilling, explosion, personnel keep away unavoidably will operation under the bigger condition of loose crushing, exposed area, poor stability.Safety factor also often causes expand to leak, undercuts of poor quality, can't reach designing requirement, thereby cause ore loss ratio to increase.It is strong or in fault zone to run into the oxidation alteration, not only undercuts, expands leakage difficulty more, if it is bigger to constructor's security threat to run into not clear structure, roof fall, wall caving case accident takes place sometimes, has a strong impact on the mine and produces, even cause heavy economic losses." V " shape moat ditch formula is subjected to the tunnel, ore deposit.Be longitudinally be communicated with by the ore deposit funnel, form " V " shape groove, this just combines undercuting and expanding two operations of leakage, so can improve the cutting operating efficiency, but the moat ditch is more to the foundation cutting, has reduced the stability of foundation, generally is only applicable to the above ore body condition of ore moderately stable.Because of its bell mouth single-sided arrangement more.This just makes that the loss of adopting down ore is excessive, and the dilution of stage casing back production foundation ore is bigger under arriving.Plain base is subjected to the tunnel, ore deposit.Be characterized in level of undercuting and scraper tunnel on sustained height, the ore under adopting forms triangle ore deposit heap in the level that undercuts, and top ore borrows deadweight to flow in the rake road through drawhole.But after ore drawing finishes, residue in the triangle ore deposit heap of stope, could reclaim in the time for the treatment of the next stage back production, ore losses and dilution are all big, and are applicable to the condition that ore is firm.In sum, though the ore deposit tunnel structure that is subjected to of prior art respectively has its characteristics, do not possess general applicability, and safety is relatively poor, ore losses is excessive, and the rate of dilution is higher.The inventor is at there being bottom structure to be subjected to the deficiency in tunnel, ore deposit, through a large amount of technical Analysis and stope experimental study, develop a kind ofly can adapt to nearly ore body rock stratum mineralising, weathering is serious, the rock stratum loose crushing, be subjected to the W moat ditch type of ore deposit roadway construction safety to be subjected to tunnel, ore deposit and formation technology thereof than existing funnel type polycrystalline substance, the present invention collects funnel type, V-arrangement moat ditch type and platybasic type and is subjected to the advantage in tunnel, ore deposit, thereby reduced ore loss ratio, thoroughly eliminated and expanded the unsafe factor that leaks, undercuts, also reduce mining cost simultaneously, improved the deposit mining effect.The evidence effect is better.
Summary of the invention
First purpose of the present invention is to provide a kind of topology layout reasonable, and construction safety is easy, is subjected to the ore deposit effective, and ore dilution, the little W moat ditch type of loss have bottom structure to be subjected to the tunnel, ore deposit.
Another object of the present invention is to provide W moat ditch type to have bottom structure to be subjected to the formation technology in tunnel, ore deposit.
First purpose of the present invention is achieved in that and comprises haulage way, the ore removal courtyard, and the scraper tunnel, the ore drawing bucket is worn, and preliminary shaft is subjected to mine, the tunnel that undercuts, drilling drift, cutting gallery, slot raise etc.Haulage way is arranged along orebody trend, in haulage way, ore removal courtyard and scraper tunnel is set upwards, equidistantly staggered in both sides, scraper tunnel is horizontally disposed with the ore drawing bucket and wears, and the ore drawing bucket is worn and is communicated with scraper tunnel and preliminary shaft, and preliminary shaft top is communicated with and is subjected to mine; Homonymy preliminary shaft upper end is parallel to scraper roadway direction each self-forming tunnel that undercuts that is interconnected, uniformly-spaced arrange cutting gallery and slot raise in the tunnel that undercuts, in the cutting gallery is the scope of freedom with the slot raise, press the hole pattern parameter and arrange cutting groove big gun hole, cutting groove big gun hole arranges that being vertical goes up to parallel blossom type, the slot raise of each segmentation, cutting gallery should be on the same vertical plane, form cutting vertical-horizontal groove after the explosion.The top, tunnel is provided with cutting gallery and slot raise at interval by undercuting, at cutting gallery middle part drilling drift is set, be the scope of freedom with the cutting vertical-horizontal groove that forms after the explosion in the drilling drift, the stope deep blasting hole in the ore deposit that falls be set, be vertical going up and arrange to the fan type by the fall hole pattern parameter of ore deposit medium-length hole of mineral building.
Another object of the present invention is achieved in that it comprises following operation:
A, routine techniques standard are determined stope structure layout and foundation height.Stope is divided along orebody trend, and capwise is arranged, long 40～60 meters of mineral building, and wide is 12～14 meters, height is an orebody thickness; When ore body is steep dip when oblique, height is that the stage is high 30 meters, and segmentation is high 7～8 meters, and polycrystalline substance is arranged in outside the lower wall mineral ore, and foundation is high 3.2～3.7 meters;
Be that starting point is worn along both sides, scraper tunnel equidistant interlaced arrangement ore drawing bucket with haulage way or ore removal courtyard in B, the scraper tunnel, the distance between the ore drawing bucket is worn is 6m; The ore drawing bucket is worn degree of depth 3m and transversely vertical with the scraper tunnel; The ore drawing bucket is worn the end 2.5～4.0m that upwards constructs and is formed preliminary shaft, and homonymy preliminary shaft upper end edge scraper roadway direction is interconnected and forms the tunnel that undercuts;
C, in two parallel tunnels that undercut according to explosion compensation ratio, every the vertical with it cutting gallery of 12m horizontally set, slot raise is set vertically; Be the scope of freedom with the cutting well in the cutting gallery, press the hole pattern parameter, with hammer drill Drilling cutting groove big gun hole, falling with mineral building forms cutting groove behind the fan-shaped middle synchronous charge explosion of deep blasting hole in ore deposit;
D, be the scope of freedom with the cutting groove, respectively in the tunnel that undercuts of both sides, lateral opening with the hammer drill Drilling is 55 ° fanhole(s), fall to forming behind the synchronous charge explosion in ore deposit W moat ditch type with stope and be subjected to the tunnel, ore deposit, be subjected to the high 3～4.0m of foundation behind the ore deposit, the hole pattern parameter of fanhole(s) is: minimum burden 1.5m, the eyeground is apart from 2.0～2.2m.
The technology of the present invention key is leaked and the work that undercuts by the expansion in the tunnel initating of ore deposit, and is therefore very strict to the cutting groove requirement that undercuts.In actual stope test, for guaranteeing quality, consider the variation of ore deposit rock loosening degree, the movement height of front wall medium-length hole Drilling should be adjusted with ore deposit rock situation of change, and the back wall telephone heart can suitably reduce; Strict simultaneously control big gun hole construction quality for preventing the intensive firm influence that causes the scraper road of aperture dose, is taked big gun hole interlaced arrangement, and the control of powder charge length produces a desired effect.
Because the inventive method adopts W moat ditch type to be subjected to tunnel, ore deposit and special formation technology thereof, expansion is leaked, undercuted and mineral building falls, and carry out synchronously in the ore deposit, so avoid the operating personnel in the bigger environment of exposure, to work, improved the safety of stope operation greatly, and expansion is leaked, the quality that undercuts is guaranteed, make not pillar continuous stoping of stope, exploitation effect is good, and ore dilution, loss late are low.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing and embodiment, but never in any form the present invention is limited.
Fig. 1 is subjected to tunnel, ore deposit overall structure schematic diagram for W moat ditch type of the present invention;
Fig. 2 is that the AA of Fig. 1 is to view;
Fig. 3 is that the BB of Fig. 1 is to view;
Fig. 4 is that the CC of Fig. 1 is to view;
Fig. 5 is subjected to tunnel, ore deposit polycrystalline substance schematic diagram for W moat ditch type of the present invention;
Fig. 6 is that the AA of Fig. 5 is to view;
Fig. 7 is that the BB of Fig. 6 is to view;
Fig. 8 is that the CC of Fig. 6 is to view.
Fig. 9 is subjected to tunnel, ore deposit overall structure schematic diagram for the prior art funnel type;
Figure 10 is that the AA of Fig. 9 is to view;
Figure 11 is that the BB of Fig. 9 is to view;
Figure 12 is that the CC of Fig. 9 is to view;
Figure 13 is subjected to tunnel, ore deposit polycrystalline substance schematic diagram for the prior art funnel type;
Figure 14 is that the AA of Figure 13 is to view;
Figure 15 is that the BB of Figure 14 is to view;
The specific embodiment
Fig. 1-Fig. 8 shows W moat ditch type of the present invention and is subjected to tunnel, ore deposit overall structure and polycrystalline substance.Described W moat ditch type is subjected to the tunnel, ore deposit to comprise haulage way 1, ore removal courtyard 2, and scraper tunnel 3, the ore drawing bucket wears 4, and preliminary shaft 5 is subjected to mine 6, the tunnel 7 that undercuts, drilling drift 8, cutting gallery 9, slot raise 10 etc.Haulage way 1 is arranged along orebody trend, in haulage way 1, ore removal courtyard 2 and scraper tunnel 3 upwards are set, equidistantly staggered in 3 both sides, scraper tunnel be horizontally disposed with the ore drawing bucket and wear 4, the ore drawing bucket is worn 4 and is communicated with scraper tunnel 3 and preliminary shaft 5, and the connection of preliminary shaft 5 tops is subjected to mine 6; Homonymy preliminary shaft 5 upper ends are parallel to scraper tunnel 3 directions each self-forming tunnel 7 that undercuts that is interconnected, uniformly-spaced arrange cutting gallery 9 and slot raise 10 in the tunnel 7 that undercuts, in cutting gallery 9 is the scope of freedom with slot raise 10, press the hole pattern parameter and arrange cutting groove big gun hole 12, cutting groove big gun hole 12 arranges that being vertical goes up to parallel blossom type; The slot raise 10 of each segmentation, cutting gallery 9 should be on the same vertical plane, form cutting vertical-horizontal groove after the explosion; The top, tunnel is provided with cutting gallery 9 and slot raise 10 at interval by undercuting, middle part at cutting gallery 9 is provided with drilling drift 8, be the scope of freedom with the cutting vertical-horizontal groove that forms after the explosion in the drilling drift, by the fall hole pattern parameter of ore deposit medium-length hole of mineral building the stope deep blasting hole 11 in the ore deposit that falls is set, is vertical going up and arranges to the fan type.
The technology that W moat ditch type of the present invention is formed by the tunnel, ore deposit comprises following operation:
A, routine techniques standard are determined stope structure layout and foundation height, and stope is divided along orebody trend, and capwise is arranged, long 40～60 meters of mineral building, and wide is 12～14 meters, height is an orebody thickness; When ore body is steep dip when oblique, height is that the stage is high 30 meters, and polycrystalline substance is arranged in outside the lower wall mineral ore, and segmentation is high 7～8 meters, and foundation is high 3.2～3.7 meters;
Be that starting point wears 4 along 3 both sides, scraper tunnel equidistant interlaced arrangement ore drawing bucket with haulage way 1 or ore removal courtyard 2 in B, the scraper tunnel 3, the distance that the ore drawing bucket is worn between 4 is 6m; The ore drawing bucket is worn 4 degree of depth 3m and transversely vertical with scraper tunnel 3; Wear 4 ends, the 2.5～4.0m that upwards constructs along the ore drawing bucket and form preliminary shaft 5, homonymy preliminary shaft 5 upper end edge scraper tunnels 3 directions are interconnected and form the tunnel 7 that undercuts;
C, in two parallel tunnels 7 that undercut, every 12m horizontally set and the perpendicular cutting gallery 9 in the tunnel 7 of undercuting, tunnel 7 and cutting gallery intersection upwards vertically are provided with slot raise 10 in undercuting; In cutting gallery 9 is the scope of freedom with slot raise 10, presses the hole pattern parameter, and with hammer drill Drilling cutting groove big gun hole 12, big gun hole parameter is: hole depth 3～5m; The aperture
52～54mm; Pitch of holes 0.8～1.8m; Row's spacing 1.0m; After blasthole drilling cutter is finished, be to form cutting groove behind the charge explosion of the explosion scope of freedom with slot raise 10;
D, be the scope of freedom with the cutting groove, respectively in the tunnel 7 that undercuts of both sides, form the fan-shaped middle deep blasting hole 11 that W moat ditch type is subjected to the tunnel, ore deposit with the hammer drill Drilling, form W moat ditch type behind the deep blasting hole 11 synchronous charge explosions in fan-shaped and be subjected to mine 6 with the ore deposit that falls, mineral building upper strata, the stope ore stands mine by the outflow of conducting oneself with dignity.
For the bigger ore body of thickness, secondary cutting gallery 9 and secondary slot raise 10 are set in slot raise 10 upper ends again, in secondary cutting gallery, to press the hole pattern parameter and arrange cutting groove big gun hole 12, cutting groove big gun hole 12 arranges that being vertical goes up to parallel blossom type; Secondary cutting is provided with drilling drift 8 directly over the scraper tunnel, gallery 9 middle part,, is vertical going up and arranges to the fan type by the mineral building hole pattern parameter of the ore deposit medium-length hole Drilling stope deep blasting hole 11 in the ore deposit that falls that makes progress that falls along drilling drift 8.
Described first ore drawing bucket wear and haulage way between distance be generally 3m, be arranged in order to wear and be spaced apart 6m in the ore drawing bucket of scraper tunnel one side.
Forming the hammer drill that shallow bore hole adopted of adopting standard, cutting engineering in described B, C, the D operation is YT-28 type pusher leg drill; The ore deposit fan shaped medium length hole that respectively paragraphs all adopts YG-40 type rail-mounted rock dill Drilling, its minimum burden 1.5m, and the eyeground uses diameter to be 2 of 45mm apart from 2.0～2.2m
#Rock dynamite forms artificial column decoupling charge.
It is 55 ° that described formation W moat ditch type is subjected to the lateral opening angle of the fan-shaped middle deep blasting hole 11 in tunnel, ore deposit.
As embodiment, Fig. 5-Fig. 8 shows W moat ditch type and is subjected to tunnel, ore deposit polycrystalline substance.Promptly in the tunnel that undercuts with shallow bore hole construction the vertical and cutting gallery in tunnel of undercuting that is interconnected, according to the explosion compensation than in the cutting gallery, upwards digging slot raise.With the YG-40 type rock drilling equipment Drilling cutting groove big gun hole 12 that makes progress, big gun hole parameter is: hole depth 3～5m in the cutting gallery; The aperture
52～54mm; Pitch of holes 0.8～1.8m; Row's spacing 1.0m after the blasthole drilling cutter is finished, is to form cutting groove behind the charge explosion of the explosion scope of freedom with the slot raise.In two tunnels that undercut that are parallel to the scraper tunnel, upwards constructing lateral opening with YG-40 type rock drilling equipment Drilling is 55 ° fanhole(s), and big gun hole parameter is: hole depth 4～6m; The aperture
52～54mm; Distance 1.8～2.4m at the bottom of the hole; Minimum burden 1.3～1.5m.When the application medium-length hole fell the ore deposit, because fan-shaped cloth hole, the explosive skewness was easy to generate bulk after the explosion.In order to reduce the bulk output capacity, adopt distance at the bottom of the macropore, the hole pattern parameter of float spacing, aperture 54mm, minimum burden 0.9～1.1m, apart from 3.0～3.5m, cutting groove big gun hole is arranged and is parallelly gone up to quincunx pitch of holes 0.8～1.0m, the intensive coefficient 3.3 in big gun hole at the bottom of the hole.After blasthole drilling cutter is finished, be that the explosion scope of freedom and stope fall that formation W shape moat ditch is subjected to tunnel, ore deposit polycrystalline substance behind the synchronous charge explosion in ore deposit with the cutting groove.
Fig. 9-Figure 15 shows existing funnel type and is subjected to tunnel, ore deposit overall structure and polycrystalline substance.Itself and W moat ditch type of the present invention are by tunnel, the ore deposit main distinction: one, preliminary shaft top uniformly-spaced (is generally 12m) cutting gallery 9 is set, and cutting gallery 9 middle parts are parallel to the scraper tunnel tunnel 7 that undercuts is set, and the tunnel 7 that undercuts is communicated with cutting gallery 9; Two, the mine that is subjected on preliminary shaft top is the funnel type structure, and promptly funnel 6 is that the scope of freedom repeatedly progressively enlarges with YT-28 type pusher leg drill Drilling shallow bore hole with the undercut preliminary shaft in tunnel of connection, and personnel enter operation in the funnel from the tunnel that undercuts.When funnel expands to when undercuting layer base plate, work need undercut, with the funnel space is the scope of freedom, the whole end of mineral building, drawn back than from lower to upper according to the explosion compensation, although adopt the local way that undercuts, leave interim ore pillar between funnel, interim ore pillar and expand the part of opening onepull when treating the mineral building ore caving, but personnel keep away the operation under bigger exposure of unavoidable need; Three, when expansion is leaked, the work of undercuting has just formed the funnel type mining tunnel after finishing, in foundation, formed between adjacent funnel, formed polycrystalline substance simultaneously like peach shape ore pillar.Therefore, its inefficiency, poor stability, ore dilution, the high deficiency of loss late.
Characteristics of the present invention:
(1) technical-economic index: improvement project and conventional funnel are subjected to the ore deposit mode to have polycrystalline substance sublevel open stoping avalanche method relatively, every index all makes moderate progress, and W shape trenching tunnel technology particularly of the present invention is subjected to ore deposit effect more significantly (seeing the economic and technical norms contrast table for details).
(2) the present invention exploits the above ore body in oxide ore Central Plains, has cancelled not only that prior art manually expands leakage, the operation that undercuts, and the moat ditch to be subjected to the ore deposit to adopt down loss late low.Deduct to expand and draw work, shortened the stope construction period.Reduce mining cost simultaneously, improved production capacity of mining field.
(3) core technology of this method is to expand leakage, the work that undercuts, and therefore, appropriate design is optimized the polycrystalline substance parameter, guarantees that it is the key of this method that medium-length hole becomes porosity.High 3.2～the 3.7m of foundation, bucket is worn 3m, bucket neck 1.2～1.7m.This method is formed by the medium-length hole onepull by ore deposit W shape moat ditch, considers the variation of ore deposit rock loosening degree, and front wall mesopore movement is lifted to 1.0～1.2m, and the back wall telephone heart is reduced to 0.5～0.3m, strict simultaneously control big gun hole construction quality.
Prior art and economic and technical norms contrast table of the present invention
(4) adopt the technology of the present invention, what make polycrystalline substance is subjected to tunnel, ore deposit technology more perfect, make the technology that forms mining roadway simpler, safer, more economical, more efficient, also can adopt the mining methods exploitation of polycrystalline substance to become a reality for the ore deposit rock of steadiness difference.
(5) sill pillars sublevel caving method is improved, avoided effectively loose owe in the firm ore deposit rock artificial expand leak, the work that undercuts, and receive effect preferably.Facts have proved that this method is not only safe and reliable, Technological Economy is reasonable, and is to reduce ore losses, the effective way that improves the economic and social benefits.Therefore this method is the reliable method that promotes the mine production development.
Claims (8)
1, a kind of W moat ditch type is subjected to the tunnel, ore deposit, comprise haulage way (1), ore removal courtyard (2), scraper tunnel (3), the ore drawing bucket is worn (4), and preliminary shaft (5) is subjected to mine (6), tunnel (7) undercuts, drilling drift (8), cutting gallery (9), slot raise (10), it is characterized in that: haulage way (1) is arranged along orebody trend, in haulage way (1), ore removal courtyard (2) and scraper tunnel (3) upwards are set, equidistantly staggered in both sides, scraper tunnel (3) be horizontally disposed with the ore drawing bucket and wear (4), the ore drawing bucket is worn (4) and is communicated with scraper tunnel (3) and preliminary shaft (5), and the connection of preliminary shaft (5) top is subjected to mine (6); Homonymy preliminary shaft (5) upper end is parallel to scraper tunnel (3) direction each self-forming tunnel (7) that undercuts that is interconnected, uniformly-spaced arrange cutting gallery (9) and slot raise (10) in the tunnel that undercuts (7), in cutting gallery (9), be the scope of freedom, press hole pattern parameter layout cutting groove big gun hole (12) with slot raise (10); The slot raise of each segmentation (10), cutting gallery (9) should be on the same vertical plane, form cutting vertical-horizontal groove after the explosion; In drilling drift (8), be the scope of freedom with the cutting vertical-horizontal groove, by the hole pattern parameter of middle deep blasting hole upwards arrange stope fall the ore deposit fan-shaped in deep blasting hole (11).
2, W moat ditch type as claimed in claim 1 is subjected to the tunnel, ore deposit, it is characterized in that: by the top, tunnel that undercuts cutting gallery (9) and slot raise (10) are set at interval, cutting groove big gun hole (12) arranges that being vertical goes up to parallel blossom type; This cutting gallery (9) middle part is provided with drilling drift (8), is the scope of freedom with the cutting vertical-horizontal groove in drilling drift (8), by the hole pattern parameter of middle deep blasting hole upwards arrange stope fall the ore deposit fan-shaped in deep blasting hole (11), be vertical going up and arrange to the fan type.
3, W moat ditch type as claimed in claim 1 is subjected to the tunnel, ore deposit, it is characterized in that: described ore drawing bucket wears that distance is 3m between first and the haulage way (1) in (4), and the ore drawing bucket that is arranged in order (3) one sides in the scraper tunnel is worn (4) and is spaced apart 6m.
4, W moat ditch type as claimed in claim 1 is subjected to the tunnel, ore deposit, it is characterized in that: described cutting gallery (9) parallel distance is 12m.
5, the described W moat of a kind of claim 1 ditch type is subjected to the formation technology in tunnel, ore deposit, it is characterized in that comprising following operation:
A, routine techniques standard are determined stope structure layout and foundation height, and stope is divided along orebody trend, and capwise is arranged, long 40～60 meters of mineral building, and wide is 12～14 meters, height is an orebody thickness; When ore body is steep dip when oblique, height is that the stage is high 30 meters, and segmentation is high 7～8 meters, and polycrystalline substance is arranged in outside the lower wall mineral ore, and foundation is high 3.2～3.7 meters;
Be that starting point is worn (4) along both sides, scraper tunnel (3) equidistant interlaced arrangement ore drawing bucket with haulage way (1) or ore removal courtyard (2) in B, scraper tunnel (3), the distance that the ore drawing bucket is worn between (4) is 6m; The ore drawing bucket is worn (4) degree of depth 3m and transversely vertical with scraper tunnel (3); Wear (4) end 2.5～4.0m that upwards constructs along the ore drawing bucket and form preliminary shaft (5), homonymy preliminary shaft (5) upper end edge scraper tunnel (3) direction is interconnected and forms the tunnel (7) that undercuts;
C, in two parallel tunnels that undercut (7), every the 12m horizontally set and the perpendicular cutting gallery (9) in tunnel (7) that undercuts, in the tunnel that undercuts (7) with cut the gallery intersection slot raise (10) upwards vertically is set; Be the scope of freedom with slot raise (10) in cutting gallery (9), press the hole pattern parameter, with hammer drill Drilling cutting groove big gun hole, big gun hole parameter is: hole depth 3～5m; The aperture
52～54mm; Pitch of holes 0.8～1.8m; Row's spacing 1.0m; After blasthole drilling cutter is finished, be to form cutting groove behind the charge explosion of the explosion scope of freedom with slot raise (10);
D, be the scope of freedom with the cutting groove, respectively in the tunnel that undercuts (7) of both sides, with the hammer drill Drilling fall the ore deposit fan-shaped in deep blasting hole (11), with the mineral building upper strata fall the ore deposit fan-shaped in deep blasting hole (11) synchronously form W moat ditch type behind the charge explosion and be subjected to mine (6), the stope ore stands mine by the deadweight outflow.
6, W moat ditch type as claimed in claim 5 is subjected to the tunnel, ore deposit to form technology, it is characterized in that: described ore drawing bucket wear in (4) first with haulage way (1) between distance be 3m, the ore drawing bucket that is arranged in order (3) one sides in the scraper tunnel is worn (4) and is spaced apart 6m.
7, W moat ditch type as claimed in claim 5 is subjected to the tunnel, ore deposit to form technology, it is characterized in that: forming the hammer drill that shallow bore hole adopted of adopting standard, cutting engineering in described B, C, the D operation is YT-28 type pusher leg drill; In deep blasting hole (11), cutting groove big gun hole (12) all adopt YG-40 type rail-mounted rock dill Drilling, deep blasting hole (11) minimum burden 1.5m wherein, the eyeground is apart from 2.0～2.2m, cutting groove big gun hole (12) pitch of holes 0.8～1.8m; Row's spacing 1.0m; Use diameter to be 2 of 45mm
#Rock dynamite forms artificial column decoupling charge.
8, W moat ditch type as claimed in claim 5 is subjected to the tunnel, ore deposit to form technology, it is characterized in that: it is 55 ° that described formation W moat ditch type is subjected to the lateral opening angle of the fan-shaped middle deep blasting hole (11) in tunnel, ore deposit.
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| CNB2006100108064A CN100504028C (en) | 2006-04-11 | 2006-04-11 | W trench type ore-gathering tunnel with bottom structure and forming process thereof |
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| 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 |
| CN103670417B (en) * | 2013-12-26 | 2016-02-03 | 鞍钢集团矿业公司 | Utilize the bottom-column-free sectional caving stoping method of scraper tunnel sidepiece ore removal |
| CN105781550B (en) * | 2016-04-01 | 2017-12-08 | 北京科技大学 | Blanking method is adopted suitable for the pulling end space non-support of Weak-break ore body |
| CN108343438B (en) * | 2018-01-18 | 2019-10-25 | 武汉理工大学 | A kind of inclined orebody varied angle Trench ore-drawing mining methods |
| CN109322670B (en) * | 2018-11-13 | 2024-03-19 | 中国恩菲工程技术有限公司 | Double-roadway upward fan-shaped blast hole blasting bottom-pulling mining system |
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| CN113669064A (en) * | 2021-08-31 | 2021-11-19 | 中国恩菲工程技术有限公司 | Natural caving mining method |
| CN114151086A (en) * | 2021-11-29 | 2022-03-08 | 紫金(厦门)工程设计有限公司 | Construction method for large-scale mining of bottom structure of thick and large broken ore body |
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| CN1069946C (en) * | 1998-03-18 | 2001-08-22 | 山东矿业学院采矿研究所 | Method for mining on near water-level very thin coal seam manless operating face |
| CN1375681A (en) * | 2002-03-25 | 2002-10-23 | 中南大学 | Energy-saving demolition mining method adopting columnar cartridge |
| RU2003120717A (en) * | 2003-07-10 | 2005-02-27 | Станислав Александрович Кариман (RU) | METHOD OF KARIMAN UNDERGROUND MINING OF FOSSILS AND EQUIPMENT FOR ITS DELIVERY, TRANSPORTATION AND FASTENING OF LAVA |
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2006
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| US4017122A (en) * | 1976-06-23 | 1977-04-12 | Acres Consulting Services Limited | Longwall trench mining system |
| US4381124A (en) * | 1980-12-17 | 1983-04-26 | Verty Vladimir G | Method of mining an oil deposit |
| CN1015123B (en) * | 1990-08-30 | 1991-12-18 | 中南工业大学 | Caving mining method |
| CN1069946C (en) * | 1998-03-18 | 2001-08-22 | 山东矿业学院采矿研究所 | Method for mining on near water-level very thin coal seam manless operating face |
| CN1375681A (en) * | 2002-03-25 | 2002-10-23 | 中南大学 | Energy-saving demolition mining method adopting columnar cartridge |
| RU2003120717A (en) * | 2003-07-10 | 2005-02-27 | Станислав Александрович Кариман (RU) | METHOD OF KARIMAN UNDERGROUND MINING OF FOSSILS AND EQUIPMENT FOR ITS DELIVERY, TRANSPORTATION AND FASTENING OF LAVA |
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| CN1828017A (en) | 2006-09-06 |
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Assignee: Yunnan Tin Co.,Ltd. Assignor: YUNNAN TIN GROUP (HOLDING) Co.,Ltd. Contract record no.: 2012530000028 Denomination of invention: W trench type ore-gathering tunnel with bottom structure and forming process thereof Granted publication date: 20090624 License type: Exclusive License Open date: 20060906 Record date: 20120522 |
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