CN109356581A - High-segmentation double-hexagon caving mining method - Google Patents
High-segmentation double-hexagon caving mining method Download PDFInfo
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- CN109356581A CN109356581A CN201811368522.1A CN201811368522A CN109356581A CN 109356581 A CN109356581 A CN 109356581A CN 201811368522 A CN201811368522 A CN 201811368522A CN 109356581 A CN109356581 A CN 109356581A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005065 mining Methods 0.000 title claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000004880 explosion Methods 0.000 claims description 8
- 230000011218 segmentation Effects 0.000 claims description 7
- 238000005422 blasting Methods 0.000 claims description 6
- 230000037452 priming Effects 0.000 claims description 5
- 238000005474 detonation Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 239000010878 waste rock Substances 0.000 claims description 3
- 238000010790 dilution Methods 0.000 abstract description 4
- 239000012895 dilution Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000011435 rock Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of mining, and particularly relates to a high-segmentation double-hexagon caving mining method which is carried out according to the following steps: 1. the invention integrates the advantages of a plurality of schemes such as a sill pillar-free sublevel caving method, a sublevel shrinkage method, high end wall ore removal and the like, improves the recovery rate of pure ore and fundamentally solves the problem of overlarge loss and dilution.
Description
Technical field
The invention belongs to mining technique fields, and in particular to a kind of double hexagon avalanche mining methods of high sublevel.
Background technique
With petering out for higher grade deposit, in addition increasingly paying attention to environment and social concern, mining industry will become to get over
Come more unattractive, in order to keep the sustainable development of mining industry, mining industry is opened by the steering of large scale mining higher grade deposit
Adopt low-grade big reserves mineral deposit.
The recovery method of metalliferous deposit is generally divided into open-stope method, Caving Method with Large Space and method of mining by the way of filling three categories.Production technique item
It in the case where part difference, should guarantee that mining safety controls cost again, often use Caving Method with Large Space.It is commonly used at present
Sublevel caving method without sill pillar is adopted and cuts that project amount is big, and at high cost, poor loss rate is all higher.Therefore, it is necessary to traditional bottom-column-free sectional
Caving Method with Large Space carries out technological innovation, and the double hexagon caved stopes of creative proposition high sublevel realize low-grade large ore deposit with this
Safe and efficient back production.
Summary of the invention
For above-mentioned problems of the prior art and deficiency, the present invention provides a kind of double hexagon avalanches of high sublevel and adopts
Mine method.
To achieve the above object, the invention provides the following technical scheme:
A kind of double hexagon avalanche mining methods of high sublevel, this method carry out as steps described below:
Step 1: being combined using upper lower burrs and adopt Barebone and carry out adopting quasi- cutting, disk boundary arrangement cutting tunnel, uses along ore body
Grooving space is formed after cutting well and cutting tunnel joint kerve；
Step 2: using vertical fan-shaped medium-length hole ore blast, cloth hole is carried out by the big bottom hole pitch principle of island operation, wherein vertical fan-shaped
Medium-length hole aperture 60mm, 60 °, array pitch 1.2m, 2.0~2.2m of bottom hole pitch of lateral opening angle, 5~14m of average hole depth；
Step 3: using grooving described in step 1 as the scope of freedom and compensation space, from ore body on disk to lower wall back production fall mine；
Step 4: when falling mine in step 3, the quick-fried detonation mode combined being squeezed using priming bomb hole-bottom blast, " V " type and is carried out
Explosion；
Step 5: ore removal.
Further, well is cut between segmentation in the step 1 to be staggeredly arranged, formed using cutting well as scope of freedom blasting in groups
Wide 4~5m, the grooving of height 14m.
Further, the kerve blasthole aperture 60mm laid needed for grooving, 60 ° of lateral opening angle, row are formed in the step 1
Away from 1.0m, 1.6~1.8m of bottom hole pitch, 7~12m of average hole depth.
Further, stope falls mine and carries out suddenly in two steps in the step 2, and paragraph mine under upper segmentation is advanced, and first
Walking back production is second servo loop and tertiary circuit route, adopts breadth 20m, ore drawing layer height 28m, bottom ore crosscut ore removal, barren rock
Coating only contacts at top with broken ore；Second step back production persists studding for what is stayed, with the first circuit and the 4th circuit
For route, high sublevel ore caving, high end wall ore removal, ore caving interval is 3~4m.
Further, during the ore removal in the step 5, inequality uniform sequential ore removal and uniform sequential is taken to shovel
Mine.
Compared with prior art, the beneficial effects of the present invention are:
The present invention combines the advantages of several schemes such as sublevel caving method without sill pillar, segmentation shrinkage method, high end wall ore removal, purpose
It is to improve the rate of recovery of ore, the rate of dilution is reduced, to improve the economic benefit of mining, beneficial effect specifically: adopt
With the height of lift of 14m, reduces to adopt and cut project amount 395m, adopting to be cut into originally reduces 2.2 yuan/ton；It is squeezed using " V " type quick-fried
It is broken, blasting quality is improved, boulder yield is reduced, improves production capacity of mining field；One step back production uses sublevel shrinkage caving method,
Adopt breadth 20m, ore drawing layer height 28m, bottom ore lane ore removal, coating only contacts at top with ore, improves ore drawing item
Part avoids the contact of route two sides and front barren rock with ore, to make the contact area of ore and barren rock by 0.246m2/t
It is reduced to 0.0255m2/ t, reduces dilution；In crosscut use inequality uniform sequential ore removal, cause broken ore integrally under
Drop, avoids barren rock and invades too early, improve the rate of recovery of pure ore, fundamentally solve the problems, such as that loss and dilution is excessive.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic diagram of the section structure in Fig. 1 at B-B.
In figure: 1. broken ores, 2. persist studding, 3. ore removal crosscuts, 4. waste rock overburdens, 5. the 4th circuits, 6. first
Circuit, 7. second servo loops, 8. tertiary circuits, 9. kerve blastholes, 10. cut well, 11. cutting tunnels, 12. vertical fan shaped medium length holes,
13. grooving.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
As shown in Figs. 1-2, a kind of double hexagon avalanche mining methods of high sublevel, this method carry out as steps described below:
Step 1: being combined using upper lower burrs and adopt Barebone and adopt quasi- cutting, cutting tunnel 11, disk boundary is arranged along ore body, is adopted
13 space of grooving is formed with cutting well 10 and cutting after kerve is combined in tunnel 11, well 10 is cut between segmentation and is staggeredly arranged, to cut well 10
Wide 4~5m, the grooving 13 of height 14m, required 9 aperture of kerve blasthole laid of grooving 13 are formed for scope of freedom blasting in groups
60mm, 60 °, array pitch 1.0m, 1.6~1.8m of bottom hole pitch of lateral opening angle, 7~12m of average hole depth；
Step 2: mine being fallen using vertical fan shaped medium length hole 12, carries out cloth hole by the big bottom hole pitch principle of island operation, wherein vertical fan
12 aperture 60mm of shape medium-length hole, 60 °, array pitch 1.2m, 2.0~2.2m of bottom hole pitch of lateral opening angle, 5~14m of average hole depth falls mine and is divided to two
Step carries out, and paragraph mine under upper segmentation is advanced, and first step back production is 8 route of second servo loop 7 and tertiary circuit, adopts breadth 20m,
Ore drawing layer height 28m, 3 ore removal of bottom ore crosscut, waste rock overburden 4 only contact at top with broken ore 1；Second step back production
Studding 2 is persisted for what is stayed, with the first circuit 6 and the 4th circuit 5 for route, high sublevel ore caving, high end wall ore removal, ore caving interval
For 3~4m；
Step 3: using grooving 13 described in step 1 as the scope of freedom and compensation space, from ore body on disk to lower wall back production fall mine；
Step 4: when falling mine in step 3, the quick-fried detonation mode combined being squeezed using priming bomb hole-bottom blast, " V " type and is carried out
Explosion, wherein priming bomb hole-bottom blast is that the priming bomb with TNT is sent into bottom hole with material strip first by every hole, is reloaded into powdery ammonium
The cured explosive of pine, implements hole-bottom blast, increases the energy of bottom hole explosion moment, extend detonation wave in the action time of bottom hole；
" V " type squeezes quick-fried after being an every separate explosion of step back production, carries out loosening ore removal, therefore ensuing blast becomes squeezing to adjacent loose media
Explosion is pressed, using same artillery salvo Delay between holes " V " type explosion, changes the blasting direction of blasthole, explosion becomes double from Single free-face
The scope of freedom, after taking above-mentioned blasting technique, stope falls mine boulder yield and is reduced to 8.4%~9.1%；
Step 5: when ore removal, to make ore connect the decline of edged surface level, establishment drawing program table is needed during ore removal, respectively mine mouth out
According to plan ore removal, upward disk circuits sequentially ore removal since lower wall goes out mine mouth, until cut-off grade is 0.4%；Or root
According to draw theory, to keep ore drawing control development normal, in each ore locations ore removal using uniform sequential shovel dress, specially first
It is intermediate behind two sides, it circuits sequentially.
Claims (5)
1. a kind of double hexagon avalanche mining methods of high sublevel, which is characterized in that this method carries out as steps described below:
Step 1: combined using upper lower burrs and adopts Barebone and carry out adopting quasi- cutting, disk boundary arrangement cutting tunnel (11) along ore body,
Grooving (13) space is formed using cutting well (10) and cutting after tunnel (11) combine kerve；
Step 2: falling mine using vertical fan shaped medium length hole (12), cloth hole is carried out by the big bottom hole pitch principle of island operation, wherein vertically
Fan shaped medium length hole (12) aperture 60mm, 60 °, array pitch 1.2m, 2.0~2.2m of bottom hole pitch of lateral opening angle, 5~14m of average hole depth；
Step 3: using grooving described in step 1 (13) as the scope of freedom and compensation space, from ore body on disk to lower wall back production fall mine；
Step 4: when falling mine in step 3, the quick-fried detonation mode combined being squeezed using priming bomb hole-bottom blast, " V " type and is carried out
Explosion；
Step 5: ore removal.
2. the double hexagon avalanche mining methods of a kind of high sublevel as described in claim 1, which is characterized in that the step 1
Well (10) is cut between middle segmentation to be staggeredly arranged, and is that scope of freedom blasting in groups forms wide 4~5m to cut well (10), height 14m's cuts
Slot (13).
3. the double hexagon avalanche mining methods of a kind of high sublevel as described in claim 1, which is characterized in that the step 1
Middle kerve blasthole (9) aperture 60mm for forming laying needed for grooving (13), 60 °, array pitch 1.0m of lateral opening angle, bottom hole pitch 1.6~
1.8m, 7~12m of average hole depth.
4. the double hexagon avalanche mining methods of a kind of high sublevel as described in claim 1, which is characterized in that the step 2
Middle stope falls mine and carries out suddenly in two steps, and paragraph mine under upper segmentation is advanced, and first step back production is second servo loop (7) and tertiary circuit
(8) route adopts breadth 20m, ore drawing layer height 28m, bottom ore crosscut (3) ore removal, waste rock overburden (4) and broken ore
(1) it is only contacted at top；Second step back production persists studding (2) for what is stayed, with the first circuit (6) and the 4th circuit (5) be into
Road, high sublevel ore caving, high end wall ore removal, ore caving interval are 3~4m.
5. the double hexagon avalanche mining methods of a kind of high sublevel as described in claim 1, which is characterized in that the step 5
In ore removal during, take inequality uniform sequential ore removal and uniform sequential to shovel mine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811368522.1A CN109356581A (en) | 2018-11-16 | 2018-11-16 | High-segmentation double-hexagon caving mining method |
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|---|---|---|---|
| CN201811368522.1A CN109356581A (en) | 2018-11-16 | 2018-11-16 | High-segmentation double-hexagon caving mining method |
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| CN109356581A true CN109356581A (en) | 2019-02-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764904A (en) * | 2020-06-30 | 2020-10-13 | 贵州开磷有限责任公司 | Underground mining method |
| CN111927458A (en) * | 2020-07-24 | 2020-11-13 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Ore drawing method for irregular thin ore body |
| RU2768251C1 (en) * | 2021-10-08 | 2022-03-23 | Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук | Method for development of steeply dipping ore bodies with unstable ores |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635356A (en) * | 2012-04-26 | 2012-08-15 | 中南大学 | Medium-length hole mining method in multiple blasting free faces of high dipping thin veins |
| US20160356157A1 (en) * | 2013-03-15 | 2016-12-08 | Solvay Sa | Multi-well solution mining exploitation of an evaporite mineral stratum |
| CN107178367A (en) * | 2017-05-23 | 2017-09-19 | 西北矿冶研究院 | Pressure relief and stoping method for steep medium-thickness ore body by segmented open-field method |
| CN107829742A (en) * | 2017-11-27 | 2018-03-23 | 西北矿冶研究院 | Caving-filling-open stope-caving mining method |
-
2018
- 2018-11-16 CN CN201811368522.1A patent/CN109356581A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635356A (en) * | 2012-04-26 | 2012-08-15 | 中南大学 | Medium-length hole mining method in multiple blasting free faces of high dipping thin veins |
| US20160356157A1 (en) * | 2013-03-15 | 2016-12-08 | Solvay Sa | Multi-well solution mining exploitation of an evaporite mineral stratum |
| CN107178367A (en) * | 2017-05-23 | 2017-09-19 | 西北矿冶研究院 | Pressure relief and stoping method for steep medium-thickness ore body by segmented open-field method |
| CN107829742A (en) * | 2017-11-27 | 2018-03-23 | 西北矿冶研究院 | Caving-filling-open stope-caving mining method |
Non-Patent Citations (1)
| Title |
|---|
| 胡华: "高分段双六边形崩落采矿法在深部铜矿的应用", 《有色金属科学技术进展—中国有色金属学会首届青年学术年会论文集》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111764904A (en) * | 2020-06-30 | 2020-10-13 | 贵州开磷有限责任公司 | Underground mining method |
| CN111764904B (en) * | 2020-06-30 | 2021-12-14 | 贵州开磷有限责任公司 | Underground mining method |
| CN111927458A (en) * | 2020-07-24 | 2020-11-13 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Ore drawing method for irregular thin ore body |
| RU2768251C1 (en) * | 2021-10-08 | 2022-03-23 | Федеральное государственное бюджетное учреждение науки Институт горного дела им. Н.А. Чинакала Сибирского отделения Российской академии наук | Method for development of steeply dipping ore bodies with unstable ores |
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Application publication date: 20190219 |
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