CN108362181B - A kind of driving recovery method of extra narrow vein ore body - Google Patents
A kind of driving recovery method of extra narrow vein ore body Download PDFInfo
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- CN108362181B CN108362181B CN201810134986.XA CN201810134986A CN108362181B CN 108362181 B CN108362181 B CN 108362181B CN 201810134986 A CN201810134986 A CN 201810134986A CN 108362181 B CN108362181 B CN 108362181B
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 210000003462 vein Anatomy 0.000 title claims abstract description 27
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 239000011435 rock Substances 0.000 claims abstract description 34
- 239000002360 explosive Substances 0.000 claims description 59
- 238000004880 explosion Methods 0.000 claims description 24
- 238000005422 blasting Methods 0.000 claims description 19
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 16
- 239000011707 mineral Substances 0.000 claims description 16
- 230000032258 transport Effects 0.000 claims description 6
- 239000003814 drug Substances 0.000 claims description 3
- 238000012163 sequencing technique Methods 0.000 claims description 3
- 238000005474 detonation Methods 0.000 claims description 2
- 238000010790 dilution Methods 0.000 abstract description 7
- 239000012895 dilution Substances 0.000 abstract description 7
- 238000005065 mining Methods 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010931 gold Substances 0.000 abstract description 2
- 229910052737 gold Inorganic materials 0.000 abstract description 2
- 238000003801 milling Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
This disclosure relates to a kind of driving recovery method of extra narrow vein ore body, this method comprises: driving exploitation extra narrow vein ore body is carried out according to run, to form exploitation space；Wherein, the dip angle of the extra narrow vein ore body is greater than 50 °, and orebody thickness is less than 1.2 meters；When exploiting the extra narrow vein ore body according to run driving and forming 4-5 meters long of exploitation space, the country rock on removal exploitation space periphery is to form tunnel.Disclosed method first carries out driving exploitation along run, the exploitation space for being conducive to driving exploitation is formed with, when exploiting 4-5 meters, the country rock for exploiting space periphery is removed again, tunnel up to specification is formed, country rock is mixed into reduce in driving exploitated ore, reduces ore dilution, improve mining recovery, beneficiation cost and metal loss are reduced, and safe and efficient, improves milling ore grade and selecting and smelting recovery rate, voluminous gold, overall economic efficiency are significant.
Description
Technical field
This disclosure relates to mining technique field, and in particular, to a kind of driving recovery method of extra narrow vein ore body.
Background technique
In the tunneling process of extra narrow vein ore body, since orebody thickness is relatively thin, during full advance, easily lead
Cause the rate of dilution excessive, to make ore quality degradation, mine grade is lower, and mining cost is high.
Summary of the invention
Purpose of this disclosure is to provide a kind of driving recovery method of extra narrow vein ore body, disclosed method be can reduce
The rate of dilution of ore body.
To achieve the goals above, the disclosure provides a kind of driving recovery method of extra narrow vein ore body, this method comprises:
Driving exploitation extra narrow vein ore body is carried out according to run, to form exploitation space；Wherein, the extra narrow vein
The dip angle of ore body is greater than 50 °, and orebody thickness is less than 1.2 meters；
When exploiting the extra narrow vein ore body according to run driving and forming 4-5 meters long of exploitation space, removal
The country rock on space periphery is exploited to form tunnel.
Optionally, the dip angle of the extra narrow vein ore body is 60-90 °, and orebody thickness is less than 1.0 meters.
Optionally, described the step of carrying out driving exploitation extra narrow vein ore body according to run, includes:
A, slotting operation is carried out to mineral ore in the horizontal direction and explosive is installed, then pinpoint blasting forms burst region；
B, it transports the ore that burst region borehole blasting is fallen and forms exploitation space.
Optionally, the explosive is nitrolite, using non-conductive booster millisecond detonating.
Optionally, the slotting operation includes the first explosive hole of setting, and first explosive hole includes hole, periphery from the bottom of one's heart
Hole, via hole and bottom outlet, the hole from the bottom of one's heart, via hole and bottom outlet are set in the mineral ore and the hole from the bottom of one's heart, via hole and
Bottom outlet is from top to bottom arranged, and the periphery hole is set on the country rock of the mineral ore periphery；
The detonation sequencing of the pinpoint blasting is followed successively by hole, periphery hole, via hole and bottom outlet from the bottom of one's heart.
Optionally, the depth in first explosive hole is 1.2-1.5 meters, and the explosive amount of fill in each first explosive hole is
0.5-1 kilograms, it is 70-95 body % that explosive, which fills up rate,.
Optionally, the horizontal extent of the slotting operation is greater than mineral ore thickness less than 1.3 meters.
Optionally, the width that every separate explosion is formed by the burst region is 0.9-1.1 meters, is highly 2.1-2.5 meters,
Depth is 0.8-0.9 meters.
Optionally, described the step of removing the country rock for exploiting space periphery to form tunnel, includes:
On country rock carry out slotting formed the second explosive hole and install explosive carry out explosion, second explosive hole according to from
High order under successively includes upper hole, mesoporous and lower opening；The span length is 1.5-3 meters, is highly 2.1-2.5
Rice.
Optionally, the depth in second explosive hole is 1.4-1.6 meters, and the explosive amount of fill in each second explosive hole is
0.4-0.8 kilograms, it is 40-60 body % that explosive, which fills up rate,.
Disclosed method first carries out driving exploitation along run, is formed with the exploitation space for being conducive to driving exploitation, to
At 4-5 meters of exploitation, then the country rock removal that space periphery will be exploited, tunnel up to specification is formed, thus in exploitation reducig ore
It is mixed into country rock, reduces ore dilution, improves mining recovery, beneficiation cost and metal loss is reduced, and safe and efficient, improves
Milling ore grade and selecting and smelting recovery rate, voluminous gold, overall economic efficiency are significant.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool
Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram of specific arrangement method in the first explosive of published method hole.
Fig. 2 is a kind of schematic diagram of specific arrangement method in the second explosive of published method hole.
Description of symbols
12 periphery hole of hole, 3 via hole from the bottom of one's heart
4 bottom outlet, 5 country rock, 6 mineral ore
8 mesoporous of hole, 9 lower opening on 7
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched
The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
In the disclosure, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower " typically refer to relative to
Above and below for vertical direction, the page of Fig. 1-2 can be specifically referred to.
The disclosure provides a kind of driving recovery method of extra narrow vein ore body, this method comprises: carrying out according to run
Driving exploitation extra narrow vein ore body, to form exploitation space；Wherein, the dip angle of the extra narrow vein ore body is greater than 50 °, mine
Body thickness is less than 1.2 meters；When exploiting the extra narrow vein ore body according to run driving and form 4-5 meters long of exploitation space
When, the country rock on removal exploitation space periphery is to form tunnel.
Disclosed method is suitable for very thin and inclined mineral ore, under preferable case, the mineral ore of the extra narrow vein ore body
Inclination angle is preferably 60-90 °, and orebody thickness is preferably smaller than 1.0 meters, and country rock should be more than moderately stable degree, and Orebody Grade should be
On grade with extraction value, dip angle refers to angle formed by rock face or mine surface and horizontal plane, and orebody thickness is
Refer to the vertical range between the upper disk and lower wall of ore body.
The disclosure is according to being suitable for tunneling the minimum space of exploitation to carry out driving exploitation ore body along run, to reduce mine
The dilution of stone, described the step of carrying out driving exploitation extra narrow vein ore body according to run may include: a, in the horizontal direction
Slotting operation is carried out to mineral ore and explosive is installed, then pinpoint blasting forms burst region；In the step, ore is with throwing
Form is got off and be deposited in burst region by explosion.B, it transports the ore that burst region borehole blasting is fallen and forms exploitation sky
Between.Burst region is cleared up to get to exploitation space, exploitation space is only applicable to carrying formation exploitation space institute explosion and falls
The ore fallen, the ore that subsequent stope explosion is got off do not fit through exploitation space transoportation and go out stope, it is therefore desirable to removal exploitation
The country rock on space periphery is to form the tunnel of suitable Ore Transportation.
The disclosure can use the explosive of various suitable explosions, for example, the explosive is nitrolite, and using non-conductive
Booster millisecond detonating, nitrolite are the explosive mechanical impurities of powdery, have intermediate yield and certain sensibility,
It is relatively stable under room temperature, it is insensitive to strike, collision or friction, it is suitble to apply to mining blasting.Millisecond detonating is also millisecond
Delay blasting, short-delay time can efficiently control Blasting shock wave, vibration, noise and fly generally between 50-100 milliseconds
Stone is easy to operate, safe, rapid.
According to the disclosure, slotting operation generally uses the drilling tools such as airleg rock drill to dig eye on rock, can wrap
The first explosive hole of setting is included, as shown in Figure 1, first explosive hole may include hole 1, periphery hole 2, via hole 3 and bottom from the bottom of one's heart
Hole 4, the hole from the bottom of one's heart 1, via hole 3 and bottom outlet 4 can be set in the mineral ore 6 and the hole from the bottom of one's heart 1, via hole 3 and bottom
Hole 4 can be from top to bottom arranged, and the periphery hole can be set on the country rock 5 of 6 periphery of mineral ore；The pinpoint blasting
The sequencing that detonates can be successively hole 1, periphery hole 2, via hole 3 and bottom outlet 4 from the bottom of one's heart.Hole is used for the explosion in development end from the bottom of one's heart
Blasting condition is created for other blastholes in the new scope of freedom, and via hole is for a large amount of broken ores and expands hole explosion from the bottom of one's heart
Region, periphery hole are used for the country rock on explosion mineral ore periphery with the biggish exploitation space of forming region, and bottom outlet is empty for blasting excavation
Between bottom to be suitable for exploiting space to enter walking.
According to the disclosure, after explosion, can first be aerated, so that air CO content reduces, suitable services people
Member enters, and can be carried out by air blower and air duct fabric, exhaust equipment can also be arranged, to accelerate air circulation.It then can be with
It carries out pouring slag, rectification site safety environment, prevents the problems such as falling rock, the ore and cleaning then carried out in cleaning slotting is removed
Transport the work such as the ore under explosion.
According to the disclosure, depth, explosive amount of fill and the explosive in explosive hole fill up rate and there is influence to the effect of explosion, this
It is open inventor's experience have shown that, the depth in first explosive hole is 1.2-1.5 meter, the explosive filling in each first explosive hole
Amount is 0.5-1 kilograms, and it is 70-95 body % that explosive, which fills up rate, can obtain good explosion effect in the case where saving explosive
Fruit.
According to the disclosure, slotting operation should be carried out according to run and specific configuration, since disclosure orebody thickness is small
In 1.2 meters, in order to reduce the rate of dilution, the horizontal extent of the slotting operation is preferably smaller than 1.3 meters, is greater than mineral ore thickness, described
The horizontal extent of slotting operation refers to the longest distance between explosive hole in horizontal direction.In order to facilitate pedestrian and ore is carried,
The width that every separate explosion is formed by the burst region is preferably 0.9-1.1 meters, in fact it is highly preferred that is 2.1-2.5 meters, depth is excellent
It is selected as 0.8-0.9 meters.
According to the disclosure, when exploiting space and reaching certain length, may exist unsmooth, ore difficult of divulging information,
The problems such as outstanding side of pressure and falling rocks, therefore, it is necessary to remove the country rock on exploitation space periphery to form tunnel, as shown in Fig. 2, the step
May include: on country rock carry out slotting formed the second explosive hole and install explosive carry out explosion, second explosive hole according to
High order from top to bottom successively includes upper hole 7, mesoporous 8 and lower opening 9；The span length can be 1.5-3 meters, highly may be used
Think 2.1-2.5 meters.Upper hole, mesoporous and lower opening be respectively used to stope spatial neighborhood country rock it is upper, in and lower three positions into
Row explosion, to form tunnel.Further explosion is carried out since the second explosive hole is used for the periphery in the stope space that explosion is formed,
Therefore its explosion difficulty reduce, the disclosed invention people's experience have shown that, the depth in second explosive hole is preferably 1.4-1.6
Rice, the explosive amount of fill in each second explosive hole is preferably 0.4-0.8 kilograms, and the explosive rate of filling up is preferably 40-60 body %, can be with
In the case where saving explosive, good demolition effect is provided.
The disclosure is further illustrated below by embodiment, but therefore the disclosure is not any way limited.
Embodiment
The slotting operation in horizontal direction along the pulse is carried out first, retains country rock, the explosive hole of slotting operation to greatest extent
Arrangement, charge constitution and blasting sequence are point important element tasks of pick.As shown in Figure 1,10, the first explosive hole, hole depth from the bottom of one's heart
1.40-1.45m, via hole and periphery hole depth 1.3m, every separate explosion form 1.03m (width) × 2.25m (height) after the completion
Burst region specifications section, drilling depth 0.80-0.90m is more satisfactory, can satisfy rock drilling, the needs for clearing up replica selection operation.
In the case that arrangement is constant in explosive hole, changes auxiliary orifice angle and charge constitution carries out pinpoint blasting, every time may be used
Have near 1/2 ore storage to notch, is created condition for mechanical makeup mine transport.Blasted material is fried using 4#-2 water resistant ammonium nitrate
Medicine, nonel tube millisecond detonating.The distribution of first time slotting dose is shown in Table 1, and with the increase of slotting length (depth), ore is thrown
Throw the lengthening of distance, when each slotting will adjust the explosive payload of hole, via hole and bottom outlet from the bottom of one's heart.Firing order is hole-week from the bottom of one's heart
Lateral opening-bottom outlet.
1 rock and ore separate mining Cut Blasting parameter of table
Five times slotting length 4.0-4.5m stops slotting, transports net development end ore, and onepull country rock reaches tunnel design
Specification, explosion country rock steel for shot are shown in Fig. 2, and explosive payload is shown in Table 2.
2 explosion Analysis of Field Geotechnical Parameters of table
Original blasting in once-through formation tunnel is excessive due to being mixed into country rock, may cause it and does not have recovery value.With it is original
The method that blasting in once-through forms tunnel is compared, and disclosed method can reduce in driving exploitated ore and be mixed into country rock, is reduced
Ore tunnels the rate of dilution, so that driving ores recovery value, improves mining recovery, effectively prevent metal loss, greatly
Improve economic benefit.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure
Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the disclosure to it is various can
No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally
Disclosed thought equally should be considered as disclosure disclosure of that.
Claims (8)
1. a kind of driving recovery method of extra narrow vein ore body, this method comprises:
Driving exploitation extra narrow vein ore body is carried out according to run, to form exploitation space；Wherein, the extra narrow vein ore body
Dip angle be greater than 50 °, orebody thickness is less than 1.2 meters；
When exploiting the extra narrow vein ore body according to run driving and forming 4-5 meters long of exploitation space, removal exploitation
The country rock on space periphery is to form tunnel；
It is described according to run carry out driving exploitation extra narrow vein ore body the step of include:
A, slotting operation is carried out to mineral ore in the horizontal direction and explosive is installed, then pinpoint blasting forms burst region；
B, it transports the ore that burst region borehole blasting is fallen and forms exploitation space；
The slotting operation includes the first explosive hole of setting, and first explosive hole includes hole, periphery hole, via hole and bottom from the bottom of one's heart
Hole, the hole from the bottom of one's heart, via hole and bottom outlet are set in the mineral ore and the hole from the bottom of one's heart, via hole and bottom outlet are from top to bottom set
It sets, the periphery hole is set on the country rock of the mineral ore periphery；
The detonation sequencing of the pinpoint blasting is followed successively by hole, periphery hole, via hole and bottom outlet from the bottom of one's heart.
2. according to the method described in claim 1, wherein, the dip angle of the extra narrow vein ore body is 60-90 °, ore body thickness
Degree is less than 1.0 meters.
3. according to the method described in claim 1, wherein, the explosive is nitrolite, using non-conductive booster millisecond detonating.
4. each first is fried according to the method described in claim 1, wherein, the depth in first explosive hole is 1.2-1.5 meters
The explosive amount of fill in medicine hole is 0.5-1 kilograms, and it is 70-95 body % that explosive, which fills up rate,.
5. according to the method described in claim 1, wherein, it is thick to be greater than mineral ore less than 1.3 meters for the horizontal extent of the slotting operation
Degree.
6. according to the method described in claim 1, wherein, the width that every separate explosion is formed by the burst region is 0.9-
1.1 meters, be highly 2.1-2.5 meters, and depth is 0.8-0.9 meters.
7. according to the method described in claim 1, wherein, the step of country rock on space periphery is to form tunnel is exploited in the removal
Include:
On country rock carry out slotting formed the second explosive hole and install explosive carry out explosion, second explosive hole according to from up to
Under high order successively include upper hole, mesoporous and lower opening；The span length is 1.5-3 meters, is highly 2.1-2.5 meters.
8. each second is fried according to the method described in claim 7, wherein, the depth in second explosive hole is 1.4-1.6 meters
The explosive amount of fill in medicine hole is 0.4-0.8 kilograms, and it is 40-60 body % that explosive, which fills up rate,.
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| CN201810134986.XA CN108362181B (en) | 2018-02-09 | 2018-02-09 | A kind of driving recovery method of extra narrow vein ore body |
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| CN108362181B true CN108362181B (en) | 2019-01-11 |
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| CN111305843B (en) * | 2020-03-25 | 2022-03-15 | 甘洛大桥矿业有限公司 | Mining method of phosphorite ultrathin ore body |
| CN112161534B (en) * | 2020-10-16 | 2022-06-03 | 重庆大学 | One-step mining control blasting method for mine underground upward access |
| CN112815795B (en) * | 2021-01-28 | 2022-10-18 | 安徽马钢张庄矿业有限责任公司 | Blasting method for end part extremely-thin ore body resources |
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| CN102997763A (en) * | 2012-11-29 | 2013-03-27 | 青海山金矿业有限公司 | Method for blasting inclined thin ore body by dividing ores and rocks in area in drift driving |
| CN105735996A (en) * | 2016-02-01 | 2016-07-06 | 中南大学 | Presplitting type wall cutting and filling stoping method for thin ore vein |
| CN106150505B (en) * | 2016-08-30 | 2018-10-16 | 北京矿冶研究总院 | Efficient fine blasting method for ultrathin ore body |
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