CN101368482B - Novel technique of slight-pitch ore body overall mining method - Google Patents

Novel technique of slight-pitch ore body overall mining method Download PDF

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Publication number
CN101368482B
CN101368482B CN2008102304398A CN200810230439A CN101368482B CN 101368482 B CN101368482 B CN 101368482B CN 2008102304398 A CN2008102304398 A CN 2008102304398A CN 200810230439 A CN200810230439 A CN 200810230439A CN 101368482 B CN101368482 B CN 101368482B
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cutting
ore
mining
hill
entry
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CN101368482A (en
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杨志强
张力智
习玉良
屈建伟
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Lingbao Jinyuan Mining Co Ltd
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Lingbao Jinyuan Mining Co Ltd
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Abstract

The invention belongs to gently inclined orebody mining field, in particular discloses a new gently inclined orebody overall mining process, including the following steps: digging a pedestrian raise entry and an cutting raise entry which are communicated with the upper middle section in the orebody disclosed in a drift at the lower middle section; constructing an undercutting drift at the mouth of the cutting raise entry; digging ore passes at a bottom pillar; constructing two layers of cutting drifts at the cutting raise entry; starting the stopping process after mining and cutting processes are finished; increasing the raise entry gradient Alpha between the mouth of the cutting raise entry and the two layers of cutting drifts to Beta 40-90 degrees by bottom-chopping engineering. Compared with prior art, the new gently inclined orebody overall mining method increases the cutting drifts and extracts almost all the ores, thus improving stopping rate. With a plurality of working faces operate at the same time, the new mining method increases ore-drawing capacity, reduces reserved natural ore pillars and reduces ore loss ratio and ore dilution ratio. Through bottom-chopping engineering, the new mining method increases the raise entry gradient between the mouth of the cutting raiser entry and the two layers of cutting drifts, thus greatly increasing ore transportation efficiency and increasing ore-drawing capacity.

Description

The new technology of flat-grade mine body overall mining method
Technical field
The invention belongs to the exploitation field of gently inclined orebody, particularly a kind of new technology of flat-grade mine body overall mining method.
Background technology
At present, for gently inclined orebody, generally adopt breast stoping.The characteristics of breast stoping are: nugget needn't rule be divided mineral building and ore pillar, and stope across pitch or edge tilt or reverse caster is pushed forward comprehensively, the back production of whole layer.Fig. 1 is longitudinal projection's schematic diagram of typical flat-grade mine body overall mining method prior art, Fig. 2 is the A-A sectional view of Fig. 1, following position, the both sides driving pedestrian of stage casing 1 certain section ore body 6 go up a hill 2 with cutting go up a hill 3 and last stage casing 7 connect, form return air and pedestrains safety system, in the cutting 3 oral areas constructions tunnel 4 that undercuts of going up a hill, dig an ore scraper-trough conveyer 8 at a certain distance at foundation 9, after adopting cut and do finishing, the beginning back production.In exploitation process, barren rocks folded in the ore body 6 or low-grade ore stayed do not adopt, as shape, size and all irregular natural ore pillar 5 of spacing, in order to the roof rock in support goaf, these natural ore pillars 5 are generally as permanent loss, so loss late and the rate of dilution are all bigger.Secondly, advance exploitation to tiltedly long more than 20 meters the time with breasting method at present, mainly utilize manpower, time-consumingly take a lot of work again, had a strong impact on the ore removal ability from the downward scraping of stope work plane.
Summary of the invention
For overcoming the weak point of flat-grade mine body overall mining method recovery process in the above-mentioned prior art, purpose of the present invention is exactly the new technology that is to provide a kind of low loss late, hangs down the flat-grade mine body overall mining method of the rate of dilution, the high rate of extraction, high ore removal ability.
For achieving the above object, the technical scheme that the present invention takes is as follows: the new technology of flat-grade mine body overall mining method, the driving pedestrian goes up a hill and goes up a hill and the perforation of last stage casing with cutting in the ore body of midcourse phase gallery exposure down, in the cutting oral area construction tunnel that undercuts of going up a hill, at foundation digging ore scraper-trough conveyer, in order further to improve the rate of extraction, improve the ore removal ability, in two layers of cutting of the cutting place of going up a hill construction tunnels, after adopting cut and doing to finish, the beginning back production.
The new technology of described flat-grade mine body overall mining method is in 1/3~1/2 cutting, two layers of cutting of oblique strong point construction tunnels of going up a hill.
The new technology of described flat-grade mine body overall mining method, in cutting tiltedly long 3~5 meters construction tunnel that undercuts of going up a hill, at foundation every 7~10 meters digging one ore scraper-trough conveyers.
Cutting is gone up a hill because the inclination angle is slow, the ore deposit can not be emitted as drawing chute, in order to increase the cutting uphill slope, further improve mining efficiency, the uphill slope α in oral area to two layer cutting tunnel of cutting can also being gone up a hill increases and is β by cutting basic skill or training's journey: 40~90 °, set up funnel at the cutting oral area of going up a hill, top cutting ore can be emitted thus.
The new technology of described flat-grade mine body overall mining method, during back production, be the scope of freedom at first with two layers of cutting tunnel, push forward back production from bottom to top comprehensively, when working to the rise is advanced into the oblique strong point in 1/5~1/2 two layers cutting supreme stage casing, tunnel, push forward work plane back production simultaneously up and down more from bottom to top comprehensively in the tunnel that undercuts.
The relative prior art of the present invention because of having increased the cutting tunnel, can make the basic extraction fully of ore body, has improved the rate of extraction; The operation simultaneously of a plurality of work planes of stope has increased the ore removal ability, has reduced reservation nature ore pillar again, has reduced the loss late and the rate of dilution; Increase the uphill slope that cuts oral area to the two layer cutting tunnel of going up a hill by cutting basic skill or training's journey, improved the ore handling efficiency greatly, increased the ore removal ability.
Description of drawings
Fig. 1: longitudinal projection's schematic diagram of flat-grade mine body overall mining method in the typical prior art;
The A-A sectional view of Fig. 2: Fig. 1;
Fig. 3: longitudinal projection of the present invention schematic diagram;
The B-B sectional view of Fig. 4: Fig. 3;
The C-C sectional view of Fig. 5: Fig. 3.
The specific embodiment
The present invention is described in further detail below in conjunction with specific embodiment, but protection scope of the present invention is not limited thereto:
Embodiment 1
With the stope object of one 425 meters stage casing 9# gold mine stopes as present embodiment, concrete mining step is as follows:
(1) nugget is arranged and inscape
As shown in Figure 3,1 drift, 425 meters following stage casings discloses ore body 6 and moves towards long 39 meters, on average thick 2.80 meters in ore body 6, ore body 6 mean obliquity α are 28 °, 53 meters of 7 inclined length of horizon in 425 meters following stage casings 1 and 450 meters last stage casings, foundation 9 thick 3 meters is reserved the nature ore pillar and is reserved 7 meters of ore scraper-trough conveyer 8 spacings with ore body grade and the firm degree of top board flexibly.
(2) adopt accurate cutting work
The driving cutting is gone up a hill and 3 is gone up a hill with the pedestrian that stage casing 7 connects on 2 and 450 meters in the ore body 6 that 1 stage of stage casing gallery discloses under 425 meters, form return air and pedestrains safety system, in cutting 3 tiltedly long 3 meters constructions tunnel 4 that undercuts of going up a hill, at foundation 9 every 7 meters digging ore scraper-trough conveyers 8.At last, construct two layers and cut tunnel 10 at cutting 3 tiltedly long 20~22 meters of going up a hill.Fig. 4 is the B-B sectional view of Fig. 3.Fig. 5 is the C-C sectional view of Fig. 3, just as shown in the drawing, by cutting basic skill or training's journey the go up a hill uphill slope α (28 °) in 3 oral areas to two layer cutting tunnel 10 of cutting is increased and is β (40 °), simultaneously at the cutting 3 oral area support drawing chutes 11 of going up a hill, so that emit the ore of back production in the cutting of top.After adopting the end of cut do, the beginning back production.
(3) actual mining
At first push forward comprehensively from bottom to top, when being advanced into 14~16 meters of inclined length of horizon, push forward comprehensively from bottom to top, work plane back production simultaneously up and down in the tunnel 4 that undercuts in two layers of cutting tunnel 10.Ore deposit employing shallow bore hole driling explosion falls.Top, the base plate of ore body can not be worn out in cutter big gun hole by institute.The stope ore handling is with the manpower haulage, the top ore by cutting go up a hill 3 and funnel 11 emit, the bottom ore is emitted by ore scraper-trough conveyer 8, after its underpart leak installs to down the mine car of the stage haulage way in stage casing 1 transports.This stope roof and floor rock is a migmatitization granite, belongs to than steady type, and it is many based on circle to reserve the nature ore pillar, 3~4 meters of diameters.The stope substoping grouts the artificial ore pillar material and easily carries, and is many with artificial ore pillar replacement nature ore pillar in the stope.Stope the key technical indexes table sees Table 1.
425 meters stage casings of table 1 9# stope the key technical indexes table
By These parameters as can be seen, this production capacity of mining field is 85 ton per days, loss late 9.74%, the rate of dilution 10.03%, the rate of extraction 90.26%.When utilizing breast stoping of the present invention to exploit gently inclined orebody, go up a hill in cutting and to have dropped into the cutting engineering proposal, can make the basic extraction fully of ore body, improved the rate of extraction greatly, solve the technical barrier of the stope ore removal ability and the raising rate of extraction preferably, guaranteed the recovery to greatest extent of resource.The input of this project can make and reclaim 3200 tons of gold ores more than a year, and 11.90 kilograms of amounts of metal have been obtained favorable economic benefit.
Embodiment 2
With the stope object of one 450 meters stage casing 3# gold mine stopes as present embodiment, concrete mining step is as follows:
(1) nugget is arranged and inscape
As shown in Figure 3,3 drifts, 450 meters following stage casings disclose ore body 6 and move towards long 53 meters, on average thick 2.90 meters in ore body 6, ore body 6 mean obliquity α are 27 °, 55 meters of 7 inclined length of horizon in 450 meters following stage casings 1 and 475 meters last stage casings, foundation 9 thick 3 meters is reserved the nature ore pillar and is reserved 10 meters of ore scraper-trough conveyer 8 spacings with ore body grade and the firm degree of top board flexibly.
(2) adopt accurate cutting work
The driving cutting is gone up a hill and 3 is gone up a hill with the pedestrian that stage casing 7 connects on 2 and 475 meters in the ore body 6 that 1 stage of stage casing gallery discloses under 450 meters, form return air and pedestrains safety system, in cutting 3 tiltedly long 5 meters constructions tunnel 4 that undercuts of going up a hill, at foundation 9 every 10 meters digging ore scraper-trough conveyers 8.At last, construct two layers and cut tunnel 10 at cutting 3 tiltedly long 25~27 meters of going up a hill.Fig. 4 is the B-B sectional view of Fig. 3.Fig. 5 is the C-C sectional view of Fig. 3, just as shown in the drawing, by cutting basic skill or training's journey the go up a hill uphill slope α (27 °) in 3 oral areas to two layer cutting tunnel 10 of cutting is increased and is β (60 °), simultaneously at the cutting 3 oral area support drawing chutes 11 of going up a hill, so that emit the ore of back production in the cutting of top.After adopting the end of cut do, the beginning back production.
(3) actual mining
At first push forward comprehensively from bottom to top, when being advanced into 8~10 meters of inclined length of horizon, push forward comprehensively from bottom to top, work plane back production simultaneously up and down in the tunnel 4 that undercuts in two layers of cutting tunnel 10.Ore deposit employing shallow bore hole driling explosion falls.Top, the base plate of ore body can not be worn out in cutter big gun hole by institute.The stope ore handling is with the manpower haulage, the top ore by cutting go up a hill 3 and funnel 11 emit, the bottom ore is emitted by ore scraper-trough conveyer 8, after its underpart leak installs to down the mine car of the stage haulage way in stage casing 1 transports.This stope roof and floor rock is a migmatitization granite, genus is than steady type, preset the nature ore pillar based on (approximately long 3 meters of irregular shapes, wide 4 meters), manually grout the stope barren rock that the ore pillar material is got, adopt as far as possible in the stope and manually grout ore pillar, stope mining can be divided into the back production simultaneously of 2~3 ladders.
This production capacity of mining field is 88 ton per days, loss late 9.24%, and the rate of dilution 10.11%, the rate of extraction 91.75%, stope the key technical indexes table is slightly.
Embodiment 3
With the stope object of one 575 stage casing 5# gold mine stopes as present embodiment, concrete mining step is as follows:
(1) nugget is arranged and inscape
As shown in Figure 3,3 drifts, 575 meters following stage casings disclose ore body 6 and move towards long 60 meters, on average thick 2.75 meters in ore body 6, ore body 6 mean obliquity α are 29 °, 52 meters of 7 inclined length of horizon in 575 meters following stage casings 1 and 600 meters last stage casings, foundation 9 thick 3 meters is reserved the nature ore pillar and is reserved 8 meters of ore scraper-trough conveyer 8 spacings with ore body grade and the firm degree of top board flexibly.
(2) adopt accurate cutting work
The driving cutting is gone up a hill and 3 is gone up a hill with the pedestrian that stage casing 7 connects on 2 and 600 meters in the ore body 6 that 1 stage of stage casing gallery discloses under 575 meters, form return air and pedestrains safety system, in cutting 3 tiltedly long 4 meters constructions tunnel 4 that undercuts of going up a hill, at foundation 9 every 8 meters digging ore scraper-trough conveyers 8.At last, construct two layers and cut tunnel 10 at cutting 3 tiltedly long 23~25 meters of going up a hill.Fig. 4 is the B-B sectional view of Fig. 3.Fig. 5 is the C-C sectional view of Fig. 3, just as shown in the drawing, by cutting basic skill or training's journey the go up a hill uphill slope α (29 °) in 3 oral areas to two layer cutting tunnel 10 of cutting is increased and is β (90 °), simultaneously at the cutting 3 oral area support drawing chutes 11 of going up a hill, so that emit the ore of back production in the cutting of top.After adopting the end of cut do, the beginning back production.
(3) actual mining
At first push forward comprehensively from bottom to top, when being advanced into 4~5 meters of inclined length of horizon, push forward comprehensively from bottom to top, work plane back production simultaneously up and down in the tunnel 4 that undercuts in two layers of cutting tunnel 10.Ore deposit employing shallow bore hole driling explosion falls.Top, the base plate of ore body can not be worn out in cutter big gun hole by institute.The stope ore handling is with the manpower haulage, the top ore by cutting go up a hill 3 and funnel 11 emit, the bottom ore is emitted by ore scraper-trough conveyer 8, after its underpart leak installs to down the mine car of the stage haulage way in stage casing 1 transports.This stope roof and floor rock is a migmatitization granite, genus is than steady type, preset the nature ore pillar based on (approximately long 3~4 meters of irregular shapes, wide 4~5 meters), manually grout the stope barren rock that the ore pillar material is got, adopt as far as possible in the stope and manually grout ore pillar, stope mining can be divided into the back production simultaneously of 2~3 ladders.
This production capacity of mining field is 90 ton per days, loss late 8.73%, and the rate of dilution 9.86%, the rate of extraction 93.11%, stope the key technical indexes table is slightly.

Claims (4)

1. the new technology of flat-grade mine body overall mining method, the driving pedestrian goes up a hill and goes up a hill and the perforation of last stage casing with cutting in the ore body of midcourse phase gallery exposure down, in the cutting oral area construction tunnel that undercuts of going up a hill, at foundation digging ore scraper-trough conveyer, it is characterized in that in 1/3~1/2 cutting, two layers of cutting of oblique strong point construction tunnels of going up a hill, after adopting the end of cut do, the beginning back production.
2. the new technology of flat-grade mine body overall mining method as claimed in claim 1 is characterized in that in cutting tiltedly long 3~5 meters construction tunnel that undercuts of going up a hill, at foundation every 7~10 meters digging one ore scraper-trough conveyers.
3. the new technology of flat-grade mine body overall mining method as claimed in claim 1 or 2 is characterized in that by cutting basic skill or training's journey the go up a hill uphill slope α in oral area to two layer cutting tunnel of cutting being increased and being β: 40~90 °.
4. the new technology of flat-grade mine body overall mining method as claimed in claim 3, when it is characterized in that back production, be the scope of freedom at first with two layers of cutting tunnel, push forward back production from bottom to top comprehensively, when working to the rise is advanced into the oblique strong point in 1/5~1/2 two layers cutting supreme stage casing, tunnel, push forward work plane back production simultaneously up and down more from bottom to top comprehensively in the tunnel that undercuts.
CN2008102304398A 2008-10-16 2008-10-16 Novel technique of slight-pitch ore body overall mining method Active CN101368482B (en)

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CN101812988B (en) * 2010-03-22 2012-01-04 王书铭 Method for mining gently dipping to steep dipping thick and large ore bodies
CN102536241B (en) * 2012-01-18 2014-06-18 云南文山斗南锰业股份有限公司 Tilting ore body stoping process
CN103790588B (en) * 2014-01-15 2016-03-23 贵州开磷集团股份有限公司 A kind of gently inclined orebody is from slipping mining methods
CN105019904B (en) * 2015-07-23 2017-04-12 中南大学 Mining- machine-based slowly inclined thin ore vein mechanized continuous mining method
CN105240016B (en) * 2015-11-23 2019-03-08 武汉理工大学 Low-angle dip lamelliform jade mine nugget cutting rod band pulls filling mining method
CN105240017B (en) * 2015-11-23 2019-03-08 武汉理工大学 A kind of very thin jade nugget shape cutting pushing tow ore removal mining methods of bilayer
CN105332707B (en) * 2015-11-23 2018-08-07 武汉理工大学 The very thin stratiform jade nugget shape of low-angle dip cuts pushing tow ore removal mining methods
CN107503749A (en) * 2017-09-15 2017-12-22 核工业北京化工冶金研究院 A kind of trackless staged breast stoping for tilting vein orebody
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