CN105927224B - Big thick ore body is without goaf synchronization ore drawing filling mining method - Google Patents
Big thick ore body is without goaf synchronization ore drawing filling mining method Download PDFInfo
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- CN105927224B CN105927224B CN201610366837.7A CN201610366837A CN105927224B CN 105927224 B CN105927224 B CN 105927224B CN 201610366837 A CN201610366837 A CN 201610366837A CN 105927224 B CN105927224 B CN 105927224B
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- nugget
- ore
- cut
- stage
- separation layer
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
Abstract
The invention discloses a kind of big thick ore body without goaf synchronization ore drawing filling mining method.Big thick ore body is divided into the stage, across pitch arranges continuous nugget in the stage；It is punctual that cutting is adopted, in stage upper and lower part one gallery of each arrangement；Before block stoping, ore removal moat ditch and compensation space are constructed in nugget bottom first with bottom gallery, recycles upper entry to be cut comprehensively nugget top top formation cuts head space；Horizontal flexibility separation layer is laid above the nugget of top being cut, while the connection for cutting off using weak blast in the both sides for being cut top nugget across pitch itself and adjacent nugget forms vertical direction spatial, and arrange vertical flexible isolating layer；The nugget of avalanche separation layer parcel, casting resin is filled on horizontal flexibility separation layer simultaneously using the uniform ore removal of ore removal moat ditch.Ore drawing of the present invention while bashing, realize goaf dynamic and manage, avoid the situation for the exposure of country rock large area occur, make without large scale mined area to occur in mining process；Adaptability is good, has a wide range of application.
Description
Technical field
The present invention relates to a kind of mining methods of mine underground exploitation, especially a kind of big thick ore body is without goaf Synchronous Radio
Ore deposit filling mining method.
Background technology
In general, underground mining method can be divided into openstope method, the method for mining by the way of filling, the class of caved stopes three, although
The mode that it is pressed with managing is each variant, but goaf all unavoidably occurs in exploitation process, when goaf is unfilled
Or filling is not in time, it is possible to such as top plate avalanche, ore pillar destruction and a series of disasters of surface subsidence occurs, greatly threatens
The safety in production in mine.
At present to big thick ore body, in order to improve production efficiency and reduce cost, it is intended to using the stope of big structure parameter
Dug up mine, essential characteristic is that back production is highly equal to stage overall height, and onepull amount is big, and not high, earth's surface is worth to exploitated ore
Allow the ore body of avalanche especially suitable.The method has nugget production capacity big, and mining preparation work amount is small, and labor productivity is high, cost
Low advantage.But its shortcoming is also clearly：To manage pressed by avalanche country rock bashing, ground can be caused to sink
The problems such as falling into, make Caving Method with Large Space in earth's surface the area of avalanche can only be allowed to use, limit its use range；If leave ore pillar support
Goaf, then it can cause a large amount of wastes of ore；Even if using afterwards filling, because mining time is grown, it is also possible to cause because
There is ground pressure protrusion phenomenon not in time in filling；In addition, explosion can cause periphery barren rock to be mixed among ore, and covered when using
Under rock during ore drawing, it can also barren rock is mixed into advance, cause ore dilution rate to rise, if using cut off grade ore drawing, can make
Into substantial amounts of ore losses.
The content of the invention
Present invention aims at solve the problems, such as that conventional mining methods mined-out area hazard and ore dilution loss are big, there is provided one
Kind big thick ore body reduces ore dilution rate, prevents surface subsidence without goaf synchronization ore drawing filling mining method.
It is as follows using technical scheme to reach above-mentioned purpose：
A kind of mining methods of big thick ore body, comprise the following steps：
Big thick ore body is divided into the stage, across pitch arranges continuous nugget in the stage；It is punctual that cutting is adopted, the stage top and under
Each arrangement one in portion takes into account transport, cuts top, the gallery of ventilation and filling, and the bottom gallery in this stage is the next stage during mining
Upper entry；
Before block stoping, ore removal moat ditch and compensation space are constructed in nugget bottom first with bottom gallery, recycles top
Gallery nugget top comprehensively cut top formation cut head space；Horizontal flexibility separation layer is laid above the nugget of top being cut, while
The both sides for being cut top nugget across pitch are cut off the connection of itself and adjacent nugget using weak blast and form vertical direction spatial, and are arranged vertical
Flexible isolating layer；
It is same using the uniform ore removal of ore removal moat ditch using the lower nugget wrapped up to parallel medium-length hole blasting forced caving separation layer
When casting resin is filled on horizontal flexibility separation layer, as ore removal process synchronizes filling to avoid goaf from occurring.
By such scheme, the flexible isolating layer is asphalt felt or SBS modified asphalt waterproof coiled materials.
By such scheme, ore removal moat ditch, cut between head space, compensation space, vertical direction spatial open up it is more advanced than actual mining
Two nuggets.
In summary, the present invention has advantages below：
1) flexible protective layer has isolated ore and barren rock, reduces ore dilution rate；
2) can success mining and primary excavation ore deposit amount it is big, mining efficiency is high；
3) the adjacent casting resin of mining blocks is mixed into ore when the overcoat of nugget side avoids back production, while reduces back
Destruction of the blasting vibration to neighbouring obturation, improves back production security when adopting；
4) ore drawing while bashing, realize goaf dynamic and manage, avoid and the exposure of country rock large area occur
Situation, make without large scale mined area to occur in mining process；
5) pressed with managing using the mode of filling, make full use of industrial waste, avoid surface subsidence, be advantageous to environment guarantor
Shield；
6) can be adjusted for different mining environments, adaptability is good, has a wide range of application.
Brief description of the drawings
Fig. 1：Big thick ore body synchronization ore drawing filling mining method schematic diagram of the present invention.
1- bottoms gallery, 2- foundation, 3- ore removal moat ditches, 4- ores, 5- compensation spaces, 6- rock drilling gallerys, 7- undercut tunnel,
8- undercuts blasthole, 9- stones to be dug up mine, between 10- cuts head space, 11- horizontal flexibility separation layers, 12- upper entrys, 13- it is vertical it is flexible every
Absciss layer, 14- casting resins.
Embodiment
Following examples further explain technical solution of the present invention, but not as limiting the scope of the invention.
Referring to the drawings shown in 1, a kind of mining methods of big thick ore body：
Big thick ore body is divided into the stage, be as shown in Figure 1 a stage, the continuous nugget of across pitch arrangement, such as Fig. 1 in the stage
Middle nugget a and nugget b and nugget c；It is punctual that cutting is adopted, and in stage upper and lower part, each arrangement one takes into account transport, cuts top, ventilation
With the gallery 1 and 12 of filling, and dig up mine when this stage bottom gallery be the next stage upper entry；
Before block stoping, ore removal moat ditch 3 is constructed in nugget bottom foundation 2 first with bottom gallery 1 and to form compensation empty
Between 5, recycle upper entry 12 top is cut comprehensively to nugget top；Horizontal flexibility separation layer 11 is laid above the nugget of top being cut,
Cut off its connection with adjacent nugget using weak blast in the both sides for being cut top nugget across pitch simultaneously, and arrange vertical flexibility every
(such as nugget a) of absciss layer 13；
Using the lower nugget a wrapped up to parallel medium-length hole blasting forced caving separation layer, 3 uniform ore removal of ore removal moat ditch is utilized
Casting resin 14 is filled on horizontal flexibility separation layer 11 simultaneously, as ore removal process synchronizes filling to avoid goaf from going out
It is existing.
Specific operation process is as follows：Top is cut using shallow blasting by stage upper entry 12 comprehensively, cuts heights of roofs 3m, shape
Into enough rock drilling equipment normal works 10 between cutting head space, then the tunnel 7 that undercuts, in drilling drift 6 on chisel to sector undercut
Blasthole 8, high 5m compensation space 5 is formed after explosion；After being formed Deng compensation space, compensation space is extended through cutting the interior chisel of head space
Aperture 165mm it is lower to parallel medium-length hole；Meanwhile the tier hole of a back production nugget uses approximate presplit blasting on closing on
Mode carries out rock drilling powder charge, carries out the explosion that intensive blasthole weakens powder charge, (i.e. perpendicular as 1m vertical space to form a width
To the packing space of flexible isolating layer 13)；Between head space is cut 10 with vertical space in lay respectively horizontally and vertically by oily hair
The flexible protective layer of the compositions such as felt, SBS modified asphalt waterproof coiled materials simultaneously is fixed against sliding, and being propped up cutting head space temporarily
Shield.Moat ditch and cut between head space, opening up for compensation space, vertical direction spatial surpasses the first two nugget than actual mining, i.e., along exploitation side
It is a, b, c to nugget numbering, nugget c cutting moat ditch is just completed before the complete ore drawings of nugget a, cuts top, compensation space, vertical sky
Between and the laying work such as separation layer, while in nugget c compensation space vertical space it is quick-fried fall ore wouldn't release completely.Wait to adopt
Ore 9 is not carry out adopting the ore fraction for the work such as cutting also.
Claims (3)
1. a kind of mining methods of big thick ore body, it is characterised in that comprise the following steps：
Big thick ore body is divided into the stage, across pitch arranges continuous nugget in the stage；It is punctual that cutting is adopted, the stage upper and lower part it is each
The bottom gallery in this stage is the upper of next stage when arranging that one is taken into account transport, cuts top, the gallery of ventilation and filling, and digging up mine
Portion's gallery；
Before block stoping, ore removal moat ditch and compensation space are constructed in nugget bottom first with bottom gallery, recycles upper entry
Nugget top comprehensively cut top formation cut head space；Horizontal flexibility separation layer is laid above the nugget of top being cut, while is being cut
The connection that the both sides of top nugget across pitch cut off itself and adjacent nugget using weak blast forms vertical direction spatial, and arranges vertical flexible
Separation layer；
Using the lower nugget wrapped up to parallel medium-length hole blasting forced caving separation layer, simultaneously will using the uniform ore removal of ore removal moat ditch
Casting resin is filled on horizontal flexibility separation layer, as ore removal process synchronizes filling to avoid goaf from occurring.
2. the mining methods of big thick ore body as claimed in claim 1, it is characterised in that the flexible isolating layer is asphalt felt or SBS
Modified asphalt waterproof coiled material.
3. the mining methods of big thick ore body as claimed in claim 1, it is characterised in that ore removal moat ditch, cut between head space, compensation space,
Opening up for vertical direction spatial surpasses the first two nugget than actual mining.
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| CN201610366837.7A CN105927224B (en) | 2016-05-27 | 2016-05-27 | Big thick ore body is without goaf synchronization ore drawing filling mining method |
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| CN201610366837.7A CN105927224B (en) | 2016-05-27 | 2016-05-27 | Big thick ore body is without goaf synchronization ore drawing filling mining method |
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| CN105927224B true CN105927224B (en) | 2018-01-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106437717B (en) * | 2016-11-21 | 2019-04-26 | 武汉理工大学 | Ore drawing synchronizes packing stage mining codes to vertical long hole twice |
| CN106837412B (en) * | 2017-02-28 | 2019-01-11 | 山东科技大学 | A method of building and house refuse clamp dog interval bashing |
| CN116446880B (en) * | 2023-04-04 | 2023-12-01 | 中煤科工开采研究院有限公司 | Green mining method and device, electronic equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101864957B (en) * | 2010-05-25 | 2012-08-08 | 广西大学 | Great ore drawing simultaneous filling non-top column shrinkage mining method |
| CN103061767B (en) * | 2013-01-17 | 2015-08-05 | 云南临沧鑫圆锗业股份有限公司 | Lower to horizontal slice Dry-placed fill mining |
| CN103742190B (en) * | 2014-01-27 | 2015-10-07 | 淄博王煤矿业有限公司 | Slurry vacuum bag multi-point synchronization device for filling and filling process |
| RU2569708C1 (en) * | 2014-10-21 | 2015-11-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Северо-Кавказский горно-металлургический институт (государственный технологический университет) (СКГМИ (ГТУ) | Working of thick deposits of horizon-pillar system sandstowing |
| CN104533517B (en) * | 2015-01-16 | 2016-06-29 | 中南大学 | A kind of high sublevel falls dead zone, ore deposit zero following firms mining codes to deep hole |
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