CN109236295A - A kind of three step stoping methods suitable for Deep Thick large ore deposit - Google Patents
A kind of three step stoping methods suitable for Deep Thick large ore deposit Download PDFInfo
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- CN109236295A CN109236295A CN201811350417.5A CN201811350417A CN109236295A CN 109236295 A CN109236295 A CN 109236295A CN 201811350417 A CN201811350417 A CN 201811350417A CN 109236295 A CN109236295 A CN 109236295A
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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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
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Abstract
The invention discloses a kind of three step stoping methods suitable for Deep Thick large ore deposit, include the following steps: to arrange panel along orebody trend, curtain wall is persisted between panel, and vertical orebody trend divides mineral building and ore pillar in panel；One step rooming, afterwards all-tailing cemented filling；Two step stooping pillarings, the afterwards weak consolidated fill of crude tailings；Three step back production panel barrier pillars, afterwards tailing filling.One step is the back production under the primary ore rock supporting condition of two sides, and two steps are the back production under the conditions of cemented fill of two sides, and three steps are back production under the conditions of three face obturations.The present invention has the advantage that making full use of stress sustained release and principle of mobile equilibrium, the safety condition of panel stope back production is improved, region Earth pres-sure control is conducive to；Can be with the back production simultaneously of polydisc area, production capacity is big；Stope mining mode is flexible, is conducive to that production is maintained to stablize.
Description
Technical field
The invention belongs to mining field of engineering technology more particularly to a kind of three steps suitable for Deep Thick large ore deposit
Stoping method.
Background technique
With the increasingly exhaustion of superficial part mineral resources, deep mining has become inexorable trend.Deep mining faces high temperature, highland
The particular surroundings of pressure and high well depth, process for stoping, back production safety and back production efficiency etc. all suffer from severe challenge, and traditional method is
It is more difficult to adapt to the special mining environment in deep, it need to pioneer and invent, form a series of mining side of new adaptation deeps particular surroundings
Method.Patent 201310674053.7 discloses a kind of mining placement method, and this method with the filling slurry containing cementitious matter by being filled
Fill out the goaf of the second step stope fill area adjacent with the third step stope of ore body, and with the filling for being free of cementitious matter
Other regions in the goaf of ground paste filling second step stope, so that present invention can ensure that goaf reasonably fills intensity
Distribution, reduce second step stope consolidated fill ratio, filling cost is low, at the same can maximum exploitated ore, mention
High resource utilization, increases economic efficiency.But the patent lays particular emphasis on filling, makees to panel arrangement, mining methods and back production
The problem of industry etc. is without being related to, and still having exploitation complex procedures.It is slow that patent 201310605791.6 discloses a kind of multilayer
Tilting thin-middle thick mineral deposit filling mining method, panel uses three step back production, a step rooming, two step stooping pillarings,
Three step back production are gone up a hill ore pillar；After the completion of mineral building or pillar recovery, divulged information by the filling of higher slice gone up a hill through being connected to stope
The downward bashing in hole is finally gone up a hill ore pillar as unit of panel along three step back production from the bottom to top of going up a hill, back production after filling
The ore pillar of going up a hill in next panel has the characteristics that mining rate is high, ore recovery ratio is high, the rate of dilution is low low with mining cost.But
Above-mentioned patent suitable for multilayer low-angle dip it is thin-thick mineral deposit exploitation, those skilled in the art know that different ore bodies are opened
It adopts, adopts quasi- cutting technique and differ greatly, therefore above-mentioned patent cannot be adapted to the exploitation of Deep Thick large ore deposit.
Summary of the invention
The application aims to solve at least one of the technical problems existing in the prior art.For this purpose, an object of the present invention
It is to provide a kind of three step stoping methods suitable for Deep Thick large ore deposit, this method is pressed in which can be effectively controlled region, is ensured
Back production general safety improves resource comprehensive utilization rate, realizes the safe and efficient large scale mining in deep.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of three step stoping methods suitable for Deep Thick large ore deposit, include the following steps:
Panel is arranged along orebody trend, curtain wall is persisted between panel, and vertical orebody trend divides mineral building and mine in panel
Column；
One step rooming, afterwards all-tailing cemented filling；
Two step stooping pillarings, the afterwards weak consolidated fill of crude tailings；
Three step back production panel barrier pillars, afterwards tailing filling.
Further, it comprises the following specific steps that:
(1) panel is arranged
Panel arranges that extent length is the horizontal breadth of ore body along orebody trend, and width is determined by ore and rock stability, panel
Between persist curtain wall, curtain wall is regarded as individual special panel, the i.e. consideration back production when setting up；The curtain wall one persisted
It presses with can be effectively controlled, two, which can be such that panel and stope produces, becomes flexible, third is that the tunnel Chuan Mai arranged in curtain wall
It can play a role in the exploitation process of three steps with connecting taxiway；
(2) stopping sequence
The stopping sequence in panel is promoted along orebody trend, and the stopping sequence of each stope is by the big position of central thick in panel
It is promoted to both wings.Under the premise of safety, to guarantee yield and tissue production, 2~3 panels can be arranged while being produced.Three steps
Curtain wall back production again after adjacent two panel stopes back production sand off of rapid back production, stopping sequence is also big from ore body thickness
Part is promoted to relatively thin both wings；
(3) mining methods
Mining methods use large diameter, deep borehole stage open stope afterwards filling method, and a step, two steps and three step stopes are equal
It is divided by standardization, mining methods are identical, and rock drilling and ore removal equipment are identical, and stoping operation link is identical；Standardized work helps
In improving production efficiency, wide scale security back production is realized；
(4) quasi- cutting engineering is adopted
Including rock drilling connecting taxiway, drilling chamber, filling return aircourse, discharging tunnel, ore drawing route, trenching tunnel, drop shaft,
Rock drilling level wears arteries and veins and ore removal level wears arteries and veins engineering, wherein rock drilling level wears arteries and veins and ore removal level wears arteries and veins and is arranged in curtain wall
Interior is used as back production channel；
(5) stoping operation
It falls mine: when orebody thickness is greater than 30m, mine being fallen using major diameter vertical long hole；When orebody thickness is less than 30m,
Mine is fallen using fan shaped medium length hole；
Ore removal: a step, two step stopes use moat ditch bottom structure ore removal, and three step curtain wall stopes are using big straight
The ore electric LHD loading of diameter funnel ore removal, explosion is discharged into panel drop shaft；
Stope ventilation: it is fresh it is distinguished and admirable enter discharging tunnel from back production middle section intake, slope connecting taxiway, rinse ore removal lane
Earth's surface is discharged through return aircourse behind road；
Filling: being closed after ore removal, afterwards cementing, the weak cementing or non-glue filling using high concentration crude tailings.
Further, a step stope, that is, mineral building stope uses high concentration all-tailing cemented filling, two step stopes, that is, mine
Column stope uses weak consolidated fill, and weak cementing or non-glue filling can be used in three step stopes, that is, curtain wall stope.
Further, stoping operation falls mine detailed process is as follows: when orebody thickness is greater than 30m, being hung down using major diameter
Straight deep hole falls mine；When orebody thickness is less than 30m, mine is fallen using fan shaped medium length hole, deep hole blasting uses T-150 or Simba261
Down-the-hole drill carries out lower to borehole drilling, blasthole diameter 165mm, by VCR method formation cutting groove, with cutting in drilling drift
Slot is scope of freedom lateral caving, and long and medium hole drilling is using, to fan shaped medium length hole, blasthole is straight on SimbaH1354 drill jumbo Drilling
Diameter Φ 76mm forms cutting groove using upper centripetal deep hole driling explosion, with cutting groove using stope end cut courtyard as the scope of freedom
For scope of freedom lateral caving.
Further, stoping operation falls mine and includes the following steps:
Rock drilling: when orebody thickness is greater than 30m, mine is fallen using major diameter vertical long hole；When orebody thickness is less than 30m,
Mine is fallen using fan shaped medium length hole, Large diameter long-hole drilling uses under Simba261 high pneumatic dth drill Drilling to vertical long hole,
Blasthole diameter Φ 165mm, the cloth hole of mineral building are determined as middle part blasthole and take 3.0m (array pitch) × 3.3m (pitch of holes), and side row hole is carried out
Photoface exploision, Hole pattern parameters take 2.5m (array pitch) × 2.4m (pitch of holes), ore pillar stope interstitial hole using 3.0m (array pitch) ×
The Hole pattern parameters of 3.5m (pitch of holes), side row hole press heavy blasting blasting principle, and Hole pattern parameters use 2.0m (array pitch) × 2.0m
(pitch of holes), side row hole use SimbaH1354 electric hydaulic drill jumbo Drilling away from obturation boundary 1.8m, long and medium hole drilling
On to fan shaped medium length hole, blasthole diameter Φ 76mm, 2.5~3.0m of bottom hole pitch, row's spacing is 1.6m~1.8m, and rock drill once bores
Whole blastholes an of stope are dug, stope data boundary is obtained by the dead zone CMS scanning system；
Explosion: borehole drilling chamber arranges that stopping sequence is from one or both sides to notched blasting along orebody trend；Kerve is adopted
With light section VCR method kerve, kerve range 5.6m × 6m, kerve hole charge constitution blocks 1.5m-2.0m, single layer medicine using lower part
54kg is wrapped, top blocks 2.5m-3.0m stemming, and each quick-fried a height of 5.0m draws progress twice is primary to expand slot, and so on, until
Broken heights of roofs 6.5-7.5m carries out disposable broken top, or in the middle part of stope or end is formed at well by the explosion of VCR method and cuts day
Well forms cutting groove, after cutting groove is formed, onepull 2- using slot raise and the layer that undercuts as the scope of freedom lateral caving of falling bench
3 artillery salvo holes, lateral caving hole use the onepull of complete opening depth, using cutting groove and undercut layer as the scope of freedom lateral caving of falling bench；
On to fan shaped medium length hole use gradation charge explosion, using stope end cut courtyard as the scope of freedom, in
Borehole drilling explosion forms cutting groove, using cutting groove as scope of freedom lateral caving, when Multi-layer chambers explosion, higher slice should in advance under
Layering is not less than 2-5 round；The method of ignition is using non-electric shock conducting tube detonator millisecond detonating systems double in hole, double explosive fuse network connection
Knot.
Further, borehole drilling and explosion ventilation are aerated by the ventilation of upper middle section level, return aircourse；Middle depth
Sublevel drilling and explosion ventilation on the stope of hole, it is fresh distinguished and admirable by back production middle section level progress tunnel air inlet, pass through cutting well, filling
After drilling, waste air enters upper middle section return aircourse.
Further, a step is the back production under the primary ore rock supporting condition of two sides, and two steps are in two sides consolidated fill
Back production under concrete conditions in the establishment of a specific crime, three steps are back production under the conditions of three face obturations.The present invention makes full use of stress sustained release and dynamic equilibrium
Principle.
Compared with prior art, advantages of the present invention is as follows: (1) improving the safety condition of panel stope back production, favorably
In region Earth pres-sure control；(2) can be with the back production simultaneously of polydisc area, production capacity is big；(3) stope mining mode is flexible, is conducive to tie up
Production is held to stablize；(4) all types of stope standardization, can effectively improve utilization rate of equipment and installations, and reduction, which is adopted, cuts project amount；(5) simplify back
Excavating technology process reduces operation cross influence between stope, convenient for large-scale production organization and administration；(6) curtain wall is when setting up
It has contemplated that recycling, using identical mining methods, and original engineering can be made full use of；(7) by mining methods, return
The optimization of sequence and structural parameters etc. is adopted, so that this method resource comprehensive utilization rate can reach 85%, takes full advantage of preciousness
Mineral resources.
Detailed description of the invention
Fig. 1 is panel layout drawing of the invention；
Fig. 2 is that rock drilling of the invention is horizontal；
Fig. 3 is that ore removal of the invention is horizontal；
Fig. 4 be in Fig. 2 and 3 A-A to sectional view；
Fig. 5 is B-B direction sectional view in Fig. 2 and 3.
Wherein: 1- mineral building stope；2- ore pillar stope；3- curtain wall stope；4- rock drilling level wears arteries and veins；5- rock drilling contact
Road；6- drilling chamber；7- stowboard；8- ore removal level wears arteries and veins；9- discharging tunnel；10- ore removal route；11- trenching tunnel；
12- drop shaft；13- cemented fill；14- large diameter, deep borehole；15- fan shaped medium length hole；16- filling borehole；17- curtain wall.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to FIG. 1 to FIG. 5, the three step stoping methods of the present invention suitable for Deep Thick large ore deposit, including it is following
Step:
(1) panel arrange: panel along orebody trend arrange, extent length be ore body horizontal breadth, about 300~400m,
Panel width is 100m, persists 18m curtain wall 17 between panel.Divided in panel several long 82m, wide 18m mineral building stope 1 with
The ore pillar stope 2 of several long 78m, wide 18m.3 length of curtain wall stope determines that single stope mine amount is about by mine amount homeostatic principle
100000 t, corresponding Large Size Stope take small, and short stope then takes greatly, and back production width is 14m, and there are 2~4m mine walls for two sides.Mine is isolated
Column is regarded as individual special panel, carries out back production after two adjacent Panel stopings and filling whole.The curtain wall persisted
Press, ensure the effect of back production safety with playing control, the rock drilling level in curtain wall wears arteries and veins 4 and ore removal level wears 8 conduct of arteries and veins
Back production channel plays a role during Panel stoping.
(2) stopping sequence: the stopping sequence in panel is promoted along orebody trend, along panel the stopping sequence of each stope be by
The big position of central thick is promoted to both wings.Under the premise of safety, to guarantee yield and tissue production, 2~3 panels can be arranged same
When produce.The back production again after adjacent two panel stopes back production sand off of the curtain wall of three step back production, stopping sequence
It is to be promoted from ore body thickness is most of to relatively thin both wings.
(3) mining methods: mining methods use large diameter, deep borehole stage open stope afterwards filling method, a step, two steps and
Three step stopes are pressed standardization and are divided, and mining methods are identical, and rock drilling and ore removal equipment are identical, the basic phase of stoping operation link
Together, standardized work helps to improve production efficiency, realizes wide scale security back production.
(4) it adopts quasi- cutting engineering: mainly including rock drilling connecting taxiway 5, drilling chamber 6, filling return aircourse 7, discharging tunnel
9, the engineerings such as ore drawing route 10, trenching tunnel 11, drop shaft 12.
(5) stoping operation
It falls mine: when orebody thickness is greater than 30m, mine being fallen using major diameter vertical long hole；When orebody thickness is less than 30m,
Mine is fallen using fan shaped medium length hole.Deep hole blasting is carried out using T-150 or Simba261 down-the-hole drill in drilling drift lower to deep hole
Rock drilling, blasthole diameter 165mm form cutting groove by VCR method, using cutting groove as scope of freedom lateral caving.Long and medium hole drilling
Using, to fan shaped medium length hole, blasthole diameter Φ 76mm is with stope end cut courtyard on SimbaH1354 drill jumbo Drilling
The scope of freedom forms cutting groove using upper centripetal deep hole driling explosion, using cutting groove as scope of freedom lateral caving.
It is divided into specifically, falling mine in actual production:
Rock drilling: when orebody thickness is greater than 30m, mine is fallen using major diameter vertical long hole 14；When orebody thickness is less than 30m
When, mine is fallen using fan shaped medium length hole 15.Large diameter long-hole drilling uses under Simba261 high pneumatic dth drill Drilling to vertical
Deep hole, blasthole diameter Φ 165mm.The cloth hole of mineral building is determined as middle part blasthole and takes 3.0m (array pitch) × 3.3m (pitch of holes).In order to
Stope boundary is efficiently controlled, side row hole carries out photoface exploision, and Hole pattern parameters take 2.5m (array pitch) × 2.4m (pitch of holes).Ore pillar
Stope two sides are cemented fills 13, should minimize blasting scale, obturation is prevented to be caving.Ore pillar stope interstitial hole uses
3.0m (array pitch) × 3.5m (pitch of holes) Hole pattern parameters, side row hole press heavy blasting blasting principle, and Hole pattern parameters use 2.0m
(array pitch) × 2.0m (pitch of holes), side row hole is away from obturation boundary 1.8m.Long and medium hole drilling uses SimbaH1354 electric hydaulic
To fan shaped medium length hole on drill jumbo Drilling, blasthole diameter Φ 76mm, 2.5~3.0m of bottom hole pitch, row's spacing is 1.6m~1.8m.
Whole blastholes of the complete stope of Drilling of rock drill.Stope data boundary is obtained by the dead zone CMS scanning system.
Explosion:
Borehole drilling chamber arranges that stopping sequence is from one or both sides to notched blasting along orebody trend；Kerve is using small
Section VCR method kerve, kerve range 5.6m × 6m, kerve hole charge constitution block 1.5m~2.0m, single layer pack using lower part
54kg, top block 2.5m~3.0m stemming.Each quick-fried a height of 5.0m draws and carries out primary expansion slot twice, and so on, until broken
6.5~7.5m of heights of roofs carries out disposable broken top.Can also in the middle part of stope or end by the explosion of VCR method at well formed cutting day
Well forms cutting groove using slot raise and the layer that undercuts as the scope of freedom lateral caving of falling bench.After cutting groove is formed, onepull 2
~3 artillery salvo holes, lateral caving hole use the onepull of complete opening depth, are fallen bench using cutting groove and the layer that undercuts as the scope of freedom and are laterally collapsed
Mine.
On to fan shaped medium length hole use gradation charge explosion, using stope end cut courtyard as the scope of freedom, in
Borehole drilling explosion forms cutting groove.Using cutting groove as scope of freedom lateral caving.When Multi-layer chambers explosion, higher slice should it is advanced under
Layering is not less than 2~5 rounds；The method of ignition is using non-electric shock conducting tube detonator millisecond detonating systems double in hole, double explosive fuse networks
It is coupled.
Ore removal: a step, two step stopes use moat ditch bottom structure ore removal, and three step curtain wall stopes are using big straight
The ore electric LHD loading of diameter funnel ore removal, explosion is discharged into panel drop shaft.
Stope ventilation: it is fresh it is distinguished and admirable enter discharging tunnel from back production middle section intake, slope connecting taxiway, rinse ore removal lane
Earth's surface is discharged through return aircourse behind road.
It is envisioned that borehole drilling and explosion ventilation are aerated by the ventilation of upper middle section level, return aircourse.
Sublevel drilling and explosion ventilation on mesoporous stope, it is fresh distinguished and admirable by back production middle section level progress tunnel air inlet, by cutting well, fill
After filling out drilling, waste air enters upper middle section return aircourse.
Filling: being closed after ore removal, afterwards by complete using high concentration by filling borehole 16 by stowboard 7
Tailings is cementing, weak cementing or non-glue filling.
It should be noted that in practical applications, a step stope, that is, mineral building stope can use high concentration crude tailings glue
Knot filling, two step stopes, that is, ore pillar stope can use weak consolidated fill, and three step stopes, that is, curtain wall stope can be used
Weak cementing or non-glue filling.
The present invention by the optimum option to mining methods, structural parameters (parameters such as rock drilling, explosion), stopping sequence etc.,
So that this method resource comprehensive utilization rate can reach 85%, valuable mineral resources are taken full advantage of.
Above-described embodiment is only to clearly demonstrate examples made by the present invention, rather than the restriction to embodiment.For
For those of ordinary skill in the art, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.Here without can not be also exhaustive to all embodiments.And the obvious variation or change thus amplified out
It is dynamic to be still in the protection scope of this invention.
Claims (6)
1. a kind of three step stoping methods suitable for Deep Thick large ore deposit, which comprises the steps of:
Panel is arranged along orebody trend, curtain wall is persisted between panel, and vertical orebody trend divides mineral building and ore pillar in panel；
One step rooming, afterwards all-tailing cemented filling；
Two step stooping pillarings, the afterwards weak consolidated fill of crude tailings；
Three step back production panel barrier pillars, afterwards tailing filling.
2. the three step stoping methods according to claim 1 suitable for Deep Thick large ore deposit, which is characterized in that including such as
Lower specific steps:
(1) panel is arranged
Panel arranges that extent length is the horizontal breadth of ore body along orebody trend, and width is determined by ore and rock stability, between panel temporarily
Curtain wall is stayed, curtain wall is regarded as individual special panel, back production is considered when setting up；
(2) stopping sequence
The stopping sequence in panel is promoted along orebody trend, and the stopping sequence of each stope is from the big position of central thick to two along panel
The wing promotes, and under the premise of safety, to guarantee yield and tissue production, can arrange 2~3 panels while produce, three steps are returned
The curtain wall adopted back production again after adjacent two panel stopes back production sand off, stopping sequence are also from ore body thickness major part
It is promoted to relatively thin both wings；
(3) mining methods
Mining methods use large diameter, deep borehole stage open stope afterwards filling method, and a step, two steps and three step stopes press mark
Standardization divides, and mining methods are identical, and rock drilling and ore removal equipment are identical, and stoping operation link is identical；
(4) quasi- cutting engineering is adopted
Including rock drilling connecting taxiway, drilling chamber, filling return aircourse, discharging tunnel, ore drawing route, trenching tunnel, drop shaft, rock drilling
Level wears arteries and veins and ore removal level wears arteries and veins engineering, wherein rock drilling level wears arteries and veins and ore removal level is worn arteries and veins and is arranged in curtain wall
As back production channel；
(5) stoping operation
It falls mine: when orebody thickness is greater than 30m, mine being fallen using major diameter vertical long hole；When orebody thickness is less than 30m, use
Fan shaped medium length hole falls mine；
Ore removal: a step, two step stopes use moat ditch bottom structure ore removal, and three step curtain wall stopes are leaked using major diameter
Struggle against ore removal, and the ore electric LHD loading of explosion is discharged into panel drop shaft；
Stope ventilation: it is fresh it is distinguished and admirable enter discharging tunnel from back production middle section intake, slope connecting taxiway, after rinsing discharging tunnel
Earth's surface is discharged through return aircourse；
Filling: being closed after ore removal, afterwards cementing, the weak cementing or non-glue filling using high concentration crude tailings.
3. the three step stoping methods according to claim 2 suitable for Deep Thick large ore deposit, it is characterised in that: a step
Stope, that is, mineral building stope use high concentration all-tailing cemented filling, two step stopes, that is, ore pillar stope use weak consolidated fill, three
Weak cementing or non-glue filling can be used in step stope, that is, curtain wall stope.
4. the three step stoping methods according to claim 2 or 3 suitable for Deep Thick large ore deposit, it is characterised in that: return
It adopts operation to fall mine detailed process is as follows: when orebody thickness is greater than 30m, mine being fallen using major diameter vertical long hole；Work as ore body thickness
When degree is less than 30m, mine is fallen using fan shaped medium length hole, deep hole blasting is using T-150 or Simba261 down-the-hole drill in drilling drift
Lower to borehole drilling, blasthole diameter 165mm is carried out, cutting groove is formed by VCR method, is laterally collapsed using cutting groove as the scope of freedom
Mine, long and medium hole drilling use on SimbaH1354 drill jumbo Drilling to fan shaped medium length hole, blasthole diameter Φ 76mm, with stope end
Portion's slot raise is the scope of freedom, cutting groove is formed using upper centripetal deep hole driling explosion, using cutting groove as scope of freedom lateral caving.
5. the three step stoping methods according to claim 4 suitable for Deep Thick large ore deposit, it is characterised in that: back production is made
Industry falls mine and includes the following steps:
Rock drilling: when orebody thickness is greater than 30m, mine is fallen using major diameter vertical long hole；When orebody thickness is less than 30m, use
Fan shaped medium length hole falls mine, and Large diameter long-hole drilling uses under Simba261 high pneumatic dth drill Drilling to vertical long hole, blasthole
Diameter of phi 165mm, the cloth hole of mineral building are determined as middle part blasthole and take 3.0m (array pitch) × 3.3m (pitch of holes), and side row hole carries out smooth surface
Explosion, Hole pattern parameters take 2.5m (array pitch) × 2.4m (pitch of holes), and ore pillar stope interstitial hole uses 3.0m (array pitch) × (hole 3.5m
Spacing) Hole pattern parameters, side row hole presses heavy blasting blasting principle, and Hole pattern parameters are using 2.0m (array pitch) × 2.0m (between hole
Away from), away from obturation boundary 1.8m, long and medium hole drilling uses on SimbaH1354 electric hydaulic drill jumbo Drilling to fan side row hole
Shape medium-length hole, blasthole diameter Φ 76mm, 2.5~3.0m of bottom hole pitch, row's spacing is 1.6m~1.8m, Drilling of rock drill complete one
Whole blastholes of a stope, stope data boundary are obtained by the dead zone CMS scanning system；
Explosion: borehole drilling chamber arranges that stopping sequence is from one or both sides to notched blasting along orebody trend；Kerve is using small
Section VCR method kerve, kerve range 5.6m × 6m, kerve hole charge constitution block 1.5m-2.0m, single layer pack using lower part
54kg, top block 2.5m-3.0m stemming, and each quick-fried a height of 5.0m draws and carries out once expanding slot twice, and so on, until broken
Heights of roofs 6.5-7.5m carries out disposable broken top, or in the middle part of stope or end by VCR method explosion forms slot raise at well,
Cutting groove is formed using slot raise and the layer that undercuts as the scope of freedom lateral caving of falling bench, after cutting groove is formed, onepull 2-3 row
Blasthole, lateral caving hole use the onepull of complete opening depth, using cutting groove and undercut layer as the scope of freedom lateral caving of falling bench；
On to fan shaped medium length hole use gradation charge explosion, using stope end cut courtyard as the scope of freedom, using upper centripetal deep hole
Driling explosion forms cutting groove, and using cutting groove as scope of freedom lateral caving, when Multi-layer chambers explosion, higher slice answers advanced lower leaf
Not less than 2-5 round；The method of ignition is coupled using non-electric shock conducting tube detonator millisecond detonating systems double in hole, double explosive fuse networks.
6. the three step stoping methods according to claim 5 suitable for Deep Thick large ore deposit, it is characterised in that: deep hole chisel
Rock and explosion ventilation are aerated by the ventilation of upper middle section level, return aircourse；Sublevel drilling and explosion on medium-length hole stope
Ventilation, fresh distinguished and admirable by back production middle section level progress tunnel air inlet, after cutting well, filling borehole, waste air enters upper middle section
Return aircourse.
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| CN201811350417.5A CN109236295B (en) | 2018-11-14 | 2018-11-14 | Three-step stoping method suitable for deep thick and large ore deposit |
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| CN201811350417.5A CN109236295B (en) | 2018-11-14 | 2018-11-14 | Three-step stoping method suitable for deep thick and large ore deposit |
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| CN109236295B CN109236295B (en) | 2020-05-22 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111677507A (en) * | 2020-05-25 | 2020-09-18 | 阿勒泰正元国际矿业有限公司 | Mining method suitable for deep metal mine |
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| CN114086959A (en) * | 2021-11-16 | 2022-02-25 | 铜陵有色金属集团股份有限公司 | Bottom structure of large-diameter high-neck funnel, construction method and stoping method |
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| CN111058847A (en) * | 2019-12-13 | 2020-04-24 | 中南大学 | Continuous large-aperture deep hole blasting mechanized mining method for thick and large ore body |
| CN111058847B (en) * | 2019-12-13 | 2021-10-26 | 中南大学 | Continuous large-aperture deep hole blasting mechanized mining method for thick and large ore body |
| CN111520141A (en) * | 2020-03-19 | 2020-08-11 | 安徽金日晟矿业有限责任公司 | Deep hole arrangement process for stope recovery in two-step stope |
| CN111677507A (en) * | 2020-05-25 | 2020-09-18 | 阿勒泰正元国际矿业有限公司 | Mining method suitable for deep metal mine |
| CN111677509A (en) * | 2020-06-01 | 2020-09-18 | 南华大学 | Cooperative mining method for inclined thick and large ore body |
| CN111963175A (en) * | 2020-07-28 | 2020-11-20 | 广西大学 | Thick ore body mining method |
| CN112412455B (en) * | 2020-11-24 | 2022-11-18 | 武汉理工大学 | One-step roadway filling mining method for precast concrete |
| CN112412455A (en) * | 2020-11-24 | 2021-02-26 | 武汉理工大学 | One-step roadway filling mining method for precast concrete |
| CN113202472A (en) * | 2021-05-21 | 2021-08-03 | 中煤第七十一工程处有限责任公司 | Underground mine subsection layering and stripping upward layering mining method |
| CN113202472B (en) * | 2021-05-21 | 2024-01-23 | 中煤第七十一工程处有限责任公司 | Underground mine sectioning, layering, striping and upward layering mining method |
| CN113944465A (en) * | 2021-09-13 | 2022-01-18 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Twice-slot-drawing high-layering stoping mining method |
| CN113944465B (en) * | 2021-09-13 | 2024-02-23 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Two-time slot pulling high-layering stoping mining method |
| CN113700481A (en) * | 2021-09-16 | 2021-11-26 | 铜陵有色金属集团股份有限公司 | Zonal control filling continuous mining method for isolating ore pillars in underground goaf panel area |
| CN113700481B (en) * | 2021-09-16 | 2024-01-05 | 安徽铜冠产业技术研究院有限责任公司 | Zone control filling continuous mining method for underground goaf tray zone isolated ore pillar |
| CN114086959A (en) * | 2021-11-16 | 2022-02-25 | 铜陵有色金属集团股份有限公司 | Bottom structure of large-diameter high-neck funnel, construction method and stoping method |
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