CN104989404A - Diagonal ore-break-down medium-length hole mining method for steeply-inclined thin vein ore body - Google Patents
Diagonal ore-break-down medium-length hole mining method for steeply-inclined thin vein ore body Download PDFInfo
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Abstract
The invention discloses a diagonal ore-break-down medium-length hole mining method for a steeply-inclined thin vein ore body. The method comprises the following steps: arranging a stope according to the strike of the ore body, dividing rooms, pillars and sections according to the inclination direction of the ore body and arranging a level haulage roadway along the vein of the ore body from the footwall of the ore body; driving ore-drawing crosscuts into the ore body from where the level haulage roadway is located; horizontally arranging an undercutting roadway along the vein and parallely driving rock-drilling prospecting rises along slant height; arranging ore drop shafts to abut against the haulage roadway; starting stoping from one side of the stope, stopping stoping when the undercutting roadway is driven to the position of the first rock-drilling prospecting rise and then driving the rock-drilling prospecting rise; allowing a medium-length hole drilling machine to gradually travels from undercutting roadway to rock-drilling prospecting rise, drilling medium-length upward blast hole, carrying out denotation and drawing ore out from the bottom ore-drawing crosscuts; and after the first rock-drilling prospecting rise reaches a certain position, continuing driving the undercutting roadway until the position of the second rock-drilling prospecting rise is arrived at, carrying out medium-length hole mining, and repeating the above-mentioned operations until stoping of the stope is completed. The diagonal ore-break-down medium-length hole mining method has the advantages of high production efficiency, great production capacity and good operation security.
Description
Technical field
The present invention relates to a kind of mining methods, particularly relate to the pseudo-ore deposit Medium-long hole mining method that tilts in a kind of Steeply dipping narrow deposits arteries and veins.
Background technology
Steeply dipping narrow deposits is common in the mineral deposits such as gold, tungsten and tin, according to statistics, about has coloured, the rare and precious metal ore of 1/3rd all to come from such mineral deposit.At present, Steeply dipping narrow deposits commonly uses overhand cut and fill stoping and shallow hole shrinkage method exploitation, and owing to adopting aperture rock drilling equipment, the ore deposit amount that once falls is few, and it is low that Steeply dipping narrow deposits exploits not only production capacity, and labor strength is large, and operating cost is high.According to the experience of domestic and international mining, realize the safe and efficient the economic exploitation of steep narrow veins, its effective way improves mechanization degree exactly, and the large-scale winning equipment of a large amount of use, the length improving blasting hole is measured with the ore deposit that once falls.In view of this, Longhole Mining equipment is used in Steeply dipping narrow deposits exploitation, namely adopt conventional on to segmentation Medium-long hole mining method, although the high-efficient homework of Steeply dipping narrow deposits can be realized, improve production capacity, but also exist adopt accurate engineering quantity large, the problems such as slot raise forms the explosion scope of freedom and compensation space, stope domestic demand design ramp or driving courtyard artificial haulage rock drilling equipment, labor strength is large, narrow vein medium-length hole blasting clamping action is large, explosive consumption is large need be tunneled.For the exploitation of Steeply dipping narrow deposits, due to the impact by above-mentioned factor, oper cylinler medium-length hole narrow vein mining seldom carries out always.
It is investigated and read, patent document CN 102635356 A relates to a kind of steep narrow veins many explosions scope of freedom Medium-long hole mining method, although this method adopts many explosions scope of freedom, overcome the explosion clamping action of narrow vein, but the method exists equally need tunnel slot raise formation cutting groove, need driving ramp or driving People's Bank of China equipment courtyard haulage rock drilling equipment equally at stope, labor strength is large waits deficiency.Therefore, invent a kind of being combined by the layout tilted tunnel of arteries and veins and medium-length hole blasting and carry out the exploitation method of Steeply dipping narrow deposits, filled up the blank of the safe and efficient the economic exploitation of the party's class ore body, solved the difficult problem of medium-length hole blasting in narrow vein mining.
Summary of the invention
Technical problem to be solved by this invention is separated for the exploration of lean ore body and adopts the deficiency existed during conventional mining method exploitation, propose a kind of can prospecting in mining, rock drilling apparatus of middle deep hole migration convenient, overcome Steeply dipping narrow deposits medium-length hole exploitation clamping action, form cutting groove without the need to slot raise, stoping safety is high, adopt and cut the pseudo-ore deposit Medium-long hole mining method that tilts in engineering quantity is little, back production efficiency is high, production capacity is large Steeply dipping narrow deposits arteries and veins.
In order to solve the problems of the technologies described above, in Steeply dipping narrow deposits arteries and veins provided by the invention, the pseudo-ore deposit Medium-long hole mining method that tilts, arranges stope along orebody trend, by ore body incline direction multiple openings and segmentation, on ore body hangs down height, divides the stage; From ore body lower wall 4 ~ 8m arrangement stage haulage way along the pulse; Ore removal crosscut is tunneled in ore body every 6 ~ 8m to ore body along stage haulage way position; Along the pulse level establishes the gallery that undercuts, and by slant height every 10 ~ 12m gradually parallel driving rock drilling mine locating go up a hill, communicate in stage top with filling vent level; Filling vent level communicates with upper stage haulage way; Mine chute is arranged near haulage way of upper stage side; Back production, from stope side, stops moving ahead when the gallery that undercuts is formed to first bar rock drilling mine locating uphill position, transfers driving rock drilling mine locating to and goes up a hill; In stope, namely first bar rock drilling mine locating starts mining after going up a hill and being formed; Medium-length hole rig to be gone up a hill gradually row from the gallery that undercuts to rock drilling mine locating, vertical ore body Drilling upward horizon medium-length hole explosion, collapses lower ore and use scraper ore removal from bottom ore crosscut; Go up a hill exploitation after 5 meters ~ 10 meters height until first bar rock drilling mine locating, starts again driving and to undercut gallery arrive Article 2 rock drilling mine locating uphill position, formed after rock drilling mine locating goes up a hill, use the same method and carry out Longhole Mining, until stope mining is complete; Ore is shoveled out from ore removal crosscut by scraper, to deliver near stope in drop shaft; Stope limit is exploited, limit ore removal.
Stope leaves fore-set, for reducing the poor damage of secondary, depending on ore-rock stability, and suitable adjusting stage height; Controlroof open-assembly time, prevent balkstone inbreak, accelerate explosion and ore removal speed; Continuous for guaranteeing operation, suitably supporting is carried out to the drilling drift of ore deposit section built on the sand.
Stope exploitation terminates rear employing filling method process goaf.
The described stage that divides on ore body hangs down height is: the high 40 ~ 60m in stage casing, the high 10 ~ 12m of segmentation, pillars of a house width is determined according to ore and rock stability.
Described mine chute diameter of phi 1.8m ~ Φ 2.2m and arrange 1 near 1 ~ 2, haulage way of upper stage side mineral building.
Described vertical ore body Drilling upward horizon medium-length hole explosion refer to: hit deep hole upwards borehole, aperture 70 ~ 90mm, hole depth 1m from the gallery that undercuts goes up a hill to rock drilling mine locating and does not terminate 14m not etc., big gun hole array pitch 1.8m ~ 2.2m, pitch of holes 1.8m ~ 2.2m, common rocks explosive explosion, during explosion, three artillery salvo eye once detonations or five artillery salvo eye once detonations; Detonate between two adjacent rock drilling lanes 5 ~ 20m in advance.
Adopt the pseudo-ore deposit Medium-long hole mining method that tilts in the Steeply dipping narrow deposits arteries and veins of technique scheme, its beneficial effect is:
1. adopt that to cut engineering quantity little, production technology is simple
Arrange nugget exploitation by the stage, divide segmentation from incline direction, utilize undercut tunnel, slant drilling prospects the sequencing of going up a hill and tunneling, both can prospect and control the border of ore body, dilution during minimizing back production and loss; Rock drilling equipment haulage courtyard or ramp can be cancelled again.In addition, utilize and to go up a hill the blast hole depth increased gradually to rock drilling mine locating from the tunnel that undercuts, eliminate the slot raise kerve technique required for medium-length hole blasting, save and adopt accurate engineering in a large number, it is few that accurate cutting engineering adopted by stope, and production technology is simple.
2. equipment haulage is convenient, and labor strength is little
During thin orebody mining, adopting accurate engineering quantity for reducing, tunneling courtyard in ore body of being everlasting in order to transport rock drilling apparatus of middle deep hole, but because rock drilling apparatus of middle deep hole is heavy, haulage is inconvenient especially, labor strength is large, seriously have impact on the employing of lean ore body high efficiency method, for this reason, in the arteries and veins that design employing is in tilted layout, rock drilling mine locating is gone up a hill, workman is direct mobile rock drilling equipment in undercut tunnel or rock drilling mine locating are gone up a hill, and thus haulage is convenient, and labour intensity is less.
3. clamping action is little, and boulder yield is low
Utilize vertically arranged medium-length hole borehole in rock drilling mine locating is gone up a hill to carry out stope explosion, and by the Gravitative Loads of avalanche nugget, overcome clamping action during thin orebody mining, reduce oversized fragment rate and also reduce explosive consumption.
4. operational security is high, and production capacity is large
In stope used drill and blast all undercut tunnel and rock drilling mine locating go up a hill in carry out, collapse lower ore and shovel out from the ore removal crosscut of stage casing haulage level, all personnel's equipment does not all enter goaf, and operational security is good; Adopt the mechanization such as rock drilling apparatus of middle deep hole and scraper trackless equipment, and perforating, blow out, ore removal parallel operations, production does not interfere with each other, and production capacity of mining field is large.
5. prospecting in mining, the poor damage of resource is few
Utilize rock drilling to prospect to go up a hill, Bian Caibian visits, the strict rock border, ore deposit controlled in lean ore body, and the big gun hole site of adjustment explosion and direction control dilution and the loss of stope ore.
Accompanying drawing explanation
Fig. 1 is mining methods structural representation of the present invention.
Fig. 2 is II-II sectional drawing of Fig. 1.
Fig. 3 is III-III sectional drawing of Fig. 1.
In figure: 1-filling vent level, 2-fore-set, 3-rock drilling mine locating is gone up a hill, 4-ore removal crosscut, the upper stage haulage way of 5-, 6-mine chute, 7-next stage transportation roadway, and 8-undercuts gallery.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is illustrated.
The pseudo-ore deposit Medium-long hole mining method that tilts in Steeply dipping narrow deposits arteries and veins provided by the invention, see Fig. 1, Fig. 2 and Fig. 3, its concrete steps are as follows:
1) stope is arranged along orebody trend, by ore body incline direction multiple openings and segmentation, stage casing height 46m, segmentation height 10m, pillars of a house width is determined according to ore and rock stability; At ore body lower wall 6m place arrangement stage haulage way 7 along the pulse; Tunnel in 4 to the ore body of ore removal crosscut along stage haulage way 7 every 8m; Along the pulse level establishes the gallery 8 that undercuts, and by slant height every 10m gradually parallel driving rock drilling mine locating go up a hill 3, communicate in stage top with filling vent level 1; For convenience of stope ventilation, filling vent level 1 communicates with upper stage haulage way 5; Mine chute 6 arranges 1 near 2, haulage way of upper stage 5 side mineral building, mine chute 6 diameter of phi 2m.
2) back production is from stope side, stops moving ahead, transfer driving rock drilling mine locating to and go up a hill 3 when the tunnel 8 that undercuts is tunneled and gone up a hill 3 position to first bar rock drilling mine locating; In stope, namely first bar rock drilling mine locating starts mining after going up a hill and being formed; Medium-length hole rig to be gone up a hill 3 gradually row from gallery 8 to the rock drilling mine locating that undercuts, vertical ore body Drilling upward horizon medium-length hole; Medium-length hole aperture 70mm, hole depth is prospected from 1m near the gallery 8 that undercuts to rock drilling and is not gone up a hill 10m not etc., big gun hole array pitch 2m, pitch of holes 2m; During explosion, three artillery salvo eye once detonations; When first bar rock drilling mine locating goes up a hill blasting excavation to after 5 meters ~ 10 meters height, start again driving and to undercut tunnel, to Article 2 rock drilling mine locating uphill position, formed after rock drilling prospects and go up a hill, adopt above-mentioned same method and technique to exploit; To detonate in advance between two adjacent drilling drifts five artillery salvo holes.Detonate between two adjacent rock drilling lanes 5 ~ 20m in advance.
3) utilize ore to conduct oneself with dignity and form tight-face blasting to overcome the clamping action in thin orebody mining; Ore under quick-fried is shoveled out from ore removal crosscut by scraper, is transported in neighbouring mine chute 6; Stope inner edge is exploited, scraper limit ore removal.
4) for guaranteeing job safety, stope leaves fore-set 2, fore-set height 3m; For reducing secondary poor damage, depending on ore-rock stability, can suitably the adjusting stage be highly; Controlroof open-assembly time, prevent balkstone inbreak, explosion and ore removal speed can be accelerated; Continuous for guaranteeing operation, suitably can carry out supporting to the drilling drift of ore deposit section built on the sand.
See Fig. 1, Fig. 2 and Fig. 3, utilize during back production and adopt accurate engineering driving sequencing and the special form of structure of stope, form the convenient passage of stoping operation compensation space and equipment conveying, without the need to draw cut cut groove form compensating space in blasting and equipment haulage conveniently; The rock drilling mine locating be in tilted layout is adopted to go up a hill and the big gun well format vertical with tendency, the onepull of two row or multi-row borehole, play on the one hand and control ore limits and mine locating effect, on the other hand, tight-face blasting is formed by ore deadweight, overcome the clamping action in thin orebody mining, improve demolition effect, reduce boulder yield, reduce explosive consumption.The present invention has prospecting in mining, without the need to Special Blasting kerve engineering, the distinguishing feature such as equipment migration is convenient, thin orebody mining clamping action is little, oversized fragment rate is low, production efficiency is high, production capacity is large, operational security is good.
Claims (6)
1. the pseudo-ore deposit Medium-long hole mining method that tilts in Steeply dipping narrow deposits arteries and veins, is characterized in that: arrange stope along orebody trend, by ore body incline direction multiple openings and segmentation, on ore body hangs down height, divide the stage; From ore body lower wall 4 ~ 8m arrangement stage haulage way along the pulse; Ore removal crosscut is tunneled in ore body every 6 ~ 8m to ore body along stage haulage way position; Along the pulse level establishes the gallery that undercuts, and by slant height every 10 ~ 12m gradually parallel driving rock drilling mine locating go up a hill, communicate in stage top with filling vent level; Filling vent level communicates with upper stage haulage way; Mine chute is arranged near haulage way of upper stage side; Back production, from stope side, stops moving ahead when the gallery that undercuts is formed to first bar rock drilling mine locating uphill position, transfers driving rock drilling mine locating to and goes up a hill; In stope, namely first bar rock drilling mine locating starts mining after going up a hill and being formed; Medium-length hole rig to be gone up a hill gradually row from the gallery that undercuts to rock drilling mine locating, vertical ore body Drilling upward horizon medium-length hole explosion, collapses lower ore and use scraper ore removal from bottom ore crosscut; Go up a hill exploitation after 5 meters ~ 10 meters height until first bar rock drilling mine locating, starts again driving and to undercut gallery arrive Article 2 rock drilling mine locating uphill position, formed after rock drilling mine locating goes up a hill, use the same method and carry out Longhole Mining, until stope mining is complete; Ore is shoveled out from ore removal crosscut by scraper, to deliver near stope in drop shaft; Stope limit is exploited, limit ore removal.
2. the pseudo-ore deposit Medium-long hole mining method that tilts in Steeply dipping narrow deposits arteries and veins according to claim 1, is characterized in that: stope leaves fore-set, for reducing the poor damage of secondary, depending on ore-rock stability, and suitable adjusting stage height; Controlroof open-assembly time, prevent balkstone inbreak, accelerate explosion and ore removal speed; Continuous for guaranteeing operation, suitably supporting is carried out to the drilling drift of ore deposit section built on the sand.
3. the pseudo-ore deposit Medium-long hole mining method that tilts in Steeply dipping narrow deposits arteries and veins according to claim 1 and 2, is characterized in that: stope exploitation terminates rear employing filling method process goaf.
4. the pseudo-ore deposit Medium-long hole mining method that tilts in Steeply dipping narrow deposits arteries and veins according to claim 1 and 2, is characterized in that: the described stage that divides on ore body hangs down height is: the high 40 ~ 60m in stage casing, the high 10 ~ 12m of segmentation, pillars of a house width is determined according to ore and rock stability.
5. the pseudo-ore deposit Medium-long hole mining method that tilts in Steeply dipping narrow deposits arteries and veins according to claim 1 and 2, is characterized in that: described mine chute diameter of phi 1.8m ~ Φ 2.2m and arrange 1 near 1 ~ 2, haulage way of upper stage side mineral building.
6. the pseudo-ore deposit Medium-long hole mining method that tilts in Steeply dipping narrow deposits arteries and veins according to claim 1 and 2, it is characterized in that: described vertical ore body Drilling upward horizon medium-length hole explosion refer to: hit deep hole upwards borehole, aperture 70 ~ 90mm, hole depth 1m from the gallery that undercuts goes up a hill to rock drilling mine locating and does not terminate 14m not etc., big gun hole array pitch 1.8m ~ 2.2m, pitch of holes 1.8m ~ 2.2m, common rocks explosive explosion, during explosion, three artillery salvo eye once detonations or five artillery salvo eye once detonations; Detonate between two adjacent rock drilling lanes 5 ~ 20m in advance.
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| CN106948819A (en) * | 2017-05-09 | 2017-07-14 | 长春黄金研究院 | A kind of shrinkage and breast method for slipping formula ore chute ore removal certainly |
| CN107448201A (en) * | 2017-05-31 | 2017-12-08 | 陕西冶金设计研究院有限公司 | A kind of steeply inclined thin is to the flat ore removal structure of middle strong vein and method |
| CN108266188A (en) * | 2018-01-23 | 2018-07-10 | 中蓝长化工程科技有限公司 | The checkerboard type recovery method of engineering puppet inclination arrangement need not be cut based on in-vein preparatory work |
| CN108661649A (en) * | 2018-06-07 | 2018-10-16 | 大冶有色金属有限责任公司 | A kind of inclined access formula non-pillar sublevel caving mining methods |
| CN110906817A (en) * | 2019-12-17 | 2020-03-24 | 徐州天露中矿矿业科技有限公司 | Strip mine composite thin layer material mining and stripping method and blasting charge robot |
| CN110952982A (en) * | 2019-11-14 | 2020-04-03 | 西安建筑科技大学 | Medium-length hole presplitting blasting mining method for steeply inclined thin-vein to extremely thin-vein ore body |
| CN111485881A (en) * | 2020-04-07 | 2020-08-04 | 内蒙古金陶股份有限公司 | Mining method of steeply inclined thin ore vein |
| CN111894584A (en) * | 2020-07-08 | 2020-11-06 | 中南大学 | Cemented filling mining method for fully-pseudo-arranged reserved roadway of slowly-inclined thin ore body |
| CN111997611A (en) * | 2020-09-07 | 2020-11-27 | 贵州紫金矿业股份有限公司 | Steeply inclined ore body inclination raise sublevel mining method |
| CN112377196A (en) * | 2021-01-15 | 2021-02-19 | 北京科技大学 | Underground mining method for steeply inclined thin ore body with broken ore body and surrounding rock |
| CN113446006A (en) * | 2021-07-27 | 2021-09-28 | 赣州有色冶金研究所有限公司 | Open stope mining method for steeply inclined vein-shaped ore body |
| CN114183142A (en) * | 2021-12-08 | 2022-03-15 | 西北矿冶研究院 | Method for mining inclined and steeply inclined thin ore body |
| CN114412466A (en) * | 2022-01-25 | 2022-04-29 | 长沙矿山研究院有限责任公司 | Conditional ore rock boundary accurate blasting method with unstable ore body stability and unstable upper disc |
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