CN103982184A - Falling ore directional slip control method adopting underground mine bottom-pillar-free caving mining method - Google Patents
Falling ore directional slip control method adopting underground mine bottom-pillar-free caving mining method Download PDFInfo
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- CN103982184A CN103982184A CN201410254542.1A CN201410254542A CN103982184A CN 103982184 A CN103982184 A CN 103982184A CN 201410254542 A CN201410254542 A CN 201410254542A CN 103982184 A CN103982184 A CN 103982184A
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Abstract
The invention discloses a falling ore directional slip control method adopting an underground mine bottom-pillar-free caving mining method. The method is characterized in that a strip dipping angle and ore drift ore removal penetration distance are calculated and selected under the condition that a bottom pillar-free retreating inclined strip sublevel caving mining method is adopted, so that the falling ore is gathered towards an ore drift ore removal perforation by means of deadweight, and a carry-scraper loads the ore at a fixed point nearby the ore drift ore removal perforation; and the ore is conveyed out of a stope through the supported ore discharge ore drift and ore discharge transverse drift with small fractures. The loading efficiency of the carry-scraper is improved, mixing of tailings is avoided, and the ore discharge operating safety is guaranteed.
Description
Technical field
The present invention relates to the directed landing of a kind of ore and the fixed point ore removal method in underground mining field.
Background technology
Owing to thering is the technical advantage such as low cost, high efficiency, without foundation medium-length hole sublevel caving at present at home metal mine extensively promoted the use of.Applying the greatest problem running in process is, because stope sky is risen, is difficult to ensure scraper ore removal job safety.Inbreak injury fault is more, often stops production, and cannot ensure that mine carries out organism of production according to plan.
With reference to external experience, remote-controlled scraper (also needing operating personnel to enter stope observation and handling failure) has been introduced in indivedual large-scale mines and mining company's test, although operating personnel's safety ensures to some extent, but do not obtain satisfied effect, main cause is: the first, remote-controlled scraper is expensive, and equipment investment expense is too high; Once second, remote control scraper equipment breaks down, according to producing and technological requirement, still need to send Common LHD risk operation, and have to abandon for the larger stope of inbreak hidden danger, cause thus a large amount of ore losseses.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of underground mine to fall the directed landing control method of ore without foundation caved stopes, by adopting without foundation retrusive inclination itemize sublevel caving, make broken ore borrow deadweight to wear and mouthful assemble to ore removal along the pulse, utilize near scraper fixed point shovel dress ore removal is worn mouth along the pulse, then wear arteries and veins with ore removal along the pulse by light section and the ore removal that carries out supporting ore is transported out to stope, realize the directed landing of ore and fixed point ore removal, to ensure the safety of ore removal operation.
Technical scheme of the present invention is as follows:
A kind of underground mine falls the directed landing control method of ore without foundation caved stopes, it is characterized in that carrying out according to following steps:
Adopting in accurate cutting operation, connection is adopted by first vertical orebody trend construction central authorities, and adopts auxiliary connection of adopting of the each construction in connection both sides in central authorities; Auxiliary adopting after connection enters ore body forms trapezoidal tunnel, and trapezoidal tunnel is to web circle on ore body, and the both wings of constructing in trapezoidal tunnel cutting return air raise, then forms trapezoidal tunnel top tight filling as the trapezoidal dam body on first ore removal gear dam; Central authorities adopt connection and enter ore body and wear arteries and veins to forming ore removal after web circle on ore body, from ore removal wear arteries and veins to both sides construction ore removal along the pulse to trapezoidal dam body, lane is cut in the rock drilling of then constructing;
In stoping operation, carry out long and medium hole drilling as the scope of freedom taking the borehole wall of both wings cutting return air raise, then carry out successively explosion, after every separate explosion, once, ore removal operation concentrates on through the ore removal of supporting to be carried out along the pulse ore removal; Quick-fried spray finishes the cutting return air raise of rear next itemize of formation; Lane is cut in the rock drilling of constructing respectively in dam body both sides, then carries out trapezoidal stripping recovery operation; After finishing, trapezoidal stripping recovery carries out filling back coming inclination itemize successively; Stopping sequence is to central drawing back by stope both wings; After stripping recovery sand off, filling dignity is inclined-plane, falls ore and slides to ore removal along inclined-plane and wear along the pulse near mouth, near scraper shovel dress ore transporting along the pulse through ore removal ore removal is worn mouthful along the pulse.
Preferably, as the trapezoidal itemize obturation dam body requirement of strength of the first itemize, higher than 4mpa, filling enclosing wall is the body of wall that brick dust is built by laying bricks or stones, barren rock is built by laying bricks or stones or concrete is built by laying bricks or stones.
Preferably, in blasting process, carry out top board inspection sled and bolt support taking quick-fried lower ore as work plane.
Good effect of the present invention is:
The present invention is under the prerequisite adopting without foundation retrusive inclination itemize sublevel caving, make broken ore borrow deadweight to wear and mouthful assemble to ore removal along the pulse, make near scraper fixed point shovel dress ore removal is worn mouth along the pulse, then wear arteries and veins with ore removal along the pulse by light section and the ore removal that carries out supporting ore is transported out to stope, not only improve scraper mechanical shovel dress efficiency, but also avoided tailings to sneak into, ensured the safety of ore removal operation simultaneously.
In addition, method of the present invention also has following characteristics: scraper advances once can fill scraper bowl, reduce 1-3 time and advance, thereby efficiency significantly improves than the loose ore deposit of shovel dress; When dress in shovel, sneaks into without tailings, effectively reduces and sneaks into the secondary dilution causing because of tailings.
brief description of the drawings:
Fig. 1 is stope layout plan of the present invention.
Fig. 2 is stope front section view of the present invention, is also ore removal stope schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
As Fig. 1,2, the mining of the present embodiment and ore removal step are as follows:
One, adopt accurate cutting
First vertically connection 1 is adopted by orebody trend construction central authorities, and adopts the each auxiliary connection 2 of adopting of constructing in connection 1 both sides in central authorities.
Auxiliary adopting after connection 2 enters ore body forms trapezoidal tunnel, and trapezoidal tunnel is to web circle on ore body, and the both wings of constructing in trapezoidal tunnel cutting return air raise 11, then forms trapezoidal tunnel top tight filling as the trapezoidal dam body on first ore removal gear dam.
Central authorities adopt connection 1 and enter ore body and wear arteries and veins to forming ore removal after web circle on ore body, from ore removal wear arteries and veins to both sides construction ore removal along the pulse 3 to trapezoidal dam body, lane 8 is cut in the rock drilling of then constructing.When the construction of this step, first construct and have the ore removal of both wings cutting return air raise along the pulse, and connect with corresponding both wings cutting return air raise, and then construct other ore removal along the pulse.
Two, stoping operation
The borehole wall taking both wings cutting return air raise 11 carries out long and medium hole drilling as the scope of freedom, then carry out successively explosion.After every separate explosion, once, ore removal operation concentrates on through the ore removal of supporting to be carried out in 3 ore removal along the pulse, to guarantee ore removal safety, and has improved the ore removal efficiency of several times because of fixed point concentrating mining., last artillery salvo hole enters next back production itemize 2.5m when in cutting groove rock drilling cloth the hole, and explosion finishes the cutting return air raise 7 of rear next itemize of formation.
In blasting process, carry out roof control: carry out top board inspection sled and bolt support taking quick-fried lower ore as work plane.
Lane is cut in the rock drilling of constructing respectively in dam body both sides, then carries out trapezoidal stripping recovery operation; After finishing, trapezoidal stripping recovery carries out filling back coming inclination itemize 9 successively; 78 °, inclination itemize 9 inclination angle, stopping sequence is to central drawing back by stope both wings; After stripping recovery sand off, filling dignity is inclined-plane, falls ore and slides to ore removal along inclined-plane and 3 wear near mouth along the pulse, realizes fixed point shovel dress.
In the time carrying out the operation of scraper ore removal, along with ore removal 3 is worn a mouthful ore and shoveled away along the pulse, in stope, fall ore and ceaselessly 3 wear a mouthful landing along the pulse, supplement to ore removal along inclined-plane, thereby realized scraper fixed point shovel dress, efficient and safety work;
Scraper need not be exposed to fixed point yield under stope dead zone and be generally and fall the more than 95% of ore deposit amount.
When itemize ore removal ending, while being scattered ore deposit quantity not sufficient 5% in stope itemize, when scraper ore removal, need partly enter goaf, the man-machine injury of helping inbreak to cause because of top board or two when avoiding the end clearly, requires must examine sled and top board is carried out to supporting top board float stone after stope explosion.
When stope has inbreak dangerous, top must send someone to guard, and when inbreak, forbids that scraper enters itemize.
Because concentrating on ore removal, broken ore 3 wears mouth along the pulse, (the first itemize is cemented fill to ore removal barricade when scraper ore removal, be enclosing wall later) will bear multiple scraper impact and extruding, therefore, trapezoidal itemize obturation dam body requirement of strength as the first itemize must be higher than 4mpa, and filling enclosing wall must adopt that brick dust is built by laying bricks or stones, barren rock is built by laying bricks or stones or concrete wall; Filling enclosing wall is the body of wall that brick dust is built by laying bricks or stones, barren rock is built by laying bricks or stones or concrete is built by laying bricks or stones.
Three, packing job
Along the pulse 3 wear a mouthful enclosing wall 5 for construction brick mix structure at ore removal, the sealing and the discharge pipe line that then cut return air raise 7 set up, the return air raise of construction cutting afterwards enclosing wall 6.Finally, 3(top ore removal 3 formation of bearing down on one in the time of stripping recovery along the pulse along the pulse of the ore removal of adopting connection 2 and top stope along top stope auxiliary, first as filling pipeline set up, roof timbering and stope safety inspection passage, after bottom stope mining finishes, become top ore drawing in stope along the pulse) set up filling pipe 12, implement packing job.This mode has primary filling amount greatly and only need set up primary filling pipeline, and labour intensity is low, and pack effectiveness is high; Because filling pipeline is erected at stope top, do not waste filling pipe; In stowing operation, packing job personnel do not need to enter stope, and packing job waits safely outstanding advantages.
Between the obturation curing time after sand off, concentrate rock drilling to cut the rock drilling operation in lane 8, maintenance is concentrated explosion ore removal after reaching intensity.After being cut to lane 8 finishings, rock drilling enters next cycle operation.
The operations such as rock drilling, explosion and ore removal, filling hocket between the work plane of both wings.
Claims (3)
1. underground mine falls the directed landing control method of ore without foundation caved stopes, it is characterized in that carrying out according to following steps:
Adopting in accurate cutting operation, connection (1) is adopted by first vertical orebody trend construction central authorities, and adopts connection (1) both sides in central authorities and respectively construct one to assist and adopt connection (2); Auxiliary adopting after connection (2) enters ore body forms trapezoidal tunnel, and trapezoidal tunnel is to web circle on ore body, and the both wings of constructing in trapezoidal tunnel cutting return air raises (11), then form using trapezoidal tunnel top tight filling the trapezoidal dam body that keeps off dam as first ore removal; Central authorities adopt connection (1) and enter ore body and wear arteries and veins to forming ore removal after web circle on ore body, and (3), to trapezoidal dam body, lane (8) is cut in the rock drilling of then constructing along the pulse to both sides construction ore removal to wear arteries and veins from ore removal;
In stoping operation, carry out long and medium hole drilling as the scope of freedom taking the borehole wall of both wings cutting return air raises (11), then carry out successively explosion, after every separate explosion, once, ore removal operation concentrates on through the ore removal of supporting to be carried out in (3) ore removal along the pulse; Quick-fried spray finishes the cutting return air raise (7) of rear next itemize of formation; Lane is cut in the rock drilling of constructing respectively in dam body both sides, then carries out trapezoidal stripping recovery operation; After finishing, trapezoidal stripping recovery carries out filling back coming inclination itemize (9) successively; Stopping sequence is to central drawing back by stope both wings; After stripping recovery sand off, filling dignity is inclined-plane, fall ore slide to along inclined-plane ore removal along the pulse (3) wear near mouth, scraper from ore removal along the pulse (3) wear mouthful near shovel dress ore and through ore removal along the pulse (3) transport.
2. underground mine as claimed in claim 1 falls the directed landing control method of ore without foundation caved stopes, it is characterized in that: as the trapezoidal itemize obturation dam body requirement of strength of the first itemize, higher than 4mpa, filling enclosing wall is the body of wall that brick dust is built by laying bricks or stones, barren rock is built by laying bricks or stones or concrete is built by laying bricks or stones.
3. underground mine as claimed in claim 1 or 2 falls the directed landing control method of ore without foundation caved stopes, it is characterized in that: in blasting process, carry out top board inspection sled and bolt support taking quick-fried lower ore as work plane.
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Cited By (3)
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| CN107575227A (en) * | 2017-08-23 | 2018-01-12 | 黑龙江工业学院 | A kind of coal-mining method and roof controlling method |
| CN109162748A (en) * | 2018-10-19 | 2019-01-08 | 中国恩菲工程技术有限公司 | Using the aeration structure of the big thick ore body of natural caving method |
| CN113863930A (en) * | 2021-09-10 | 2021-12-31 | 中南大学 | Method for converting traditional mining mode of underground mine into green tailless mining |
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| CN113863930A (en) * | 2021-09-10 | 2021-12-31 | 中南大学 | Method for converting traditional mining mode of underground mine into green tailless mining |
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| CN103982184B (en) | 2016-03-16 |
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