CN107829740A - A kind of recovery method of very thin high-dipping ore block - Google Patents

A kind of recovery method of very thin high-dipping ore block Download PDF

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Publication number
CN107829740A
CN107829740A CN201711206644.6A CN201711206644A CN107829740A CN 107829740 A CN107829740 A CN 107829740A CN 201711206644 A CN201711206644 A CN 201711206644A CN 107829740 A CN107829740 A CN 107829740A
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China
Prior art keywords
ore
courtyard
thin
block
recovery
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CN201711206644.6A
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Chinese (zh)
Inventor
严文炳
张海磊
王序威
柴衡山
孟慧媚
史建平
尉孟虎
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Northwest Research Institute of Mining and Metallurgy
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Northwest Research Institute of Mining and Metallurgy
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Priority to CN201711206644.6A priority Critical patent/CN107829740A/en
Publication of CN107829740A publication Critical patent/CN107829740A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor
    • E21C41/22Methods of underground mining; Layouts therefor for ores, e.g. mining placers

Abstract

The invention belongs to underground mining method technical field, discloses a kind of recovery method of very thin high-dipping ore block.This method includes the division of block structure parameter, adopts quasi- cutting, back production ore removal.By orebody trend driving it is consistent with the slanting angle of ore body and with the lower wall courtyard of ore body lower wall ore-rock overlapping margins, a part of ore of by-product;Every certain altitude in lower wall courtyard both sides Drilling drilling chamber, to ore deposit medium-length hole is fallen under Drilling in drilling chamber, using lower wall courtyard and compensation space as scope of freedom Luo Kuang.For the recovery method of the changeable narrow vein in inclination angle of the present invention in the exploitation of very thin pitching vein, particularly mineral ore thickness can substantially reduce ore dilution rate and ore loss ratio in the exploitation of 0.2 0.8m mineral ore;Present invention process is simple, during lower wall upraise, produces part replica selection;Personnel are passed in and out by lower wall courtyard, the operation in the drilling chamber of spaciousness, and security is good.

Description

A kind of recovery method of very thin high-dipping ore block
Technical field
The present invention relates to underground mining method technical field, and in particular to a kind of recovery method of very thin high-dipping ore block.
Background technology
Steep narrow veins are often referred to inclination angle more than 50 °, and orebody thickness is less than 5m ore body, comprehensive coloured, yellow both at home and abroad Gold, uranium mine experience with mining, steep narrow veins exploitation uses shallow hole shrinkage method, medium-length hole sublevel open stope method and Nitrate uptake Three kinds of mining methods of method, wherein:Shallow hole shrinkage method is medium firm above suitable for ore-rock, and more than mineral ore thickness 2m, inclination angle is more than 50 ° of orebody mining prevented from caking;When orebody thickness is less than 1.5m(Minimum can not be less than 0.8m)When, more using Nitrate uptake Method;Mineral ore thickness 5m or so ore body, then from sublevel open stope method.But the form of steep narrow veins is ever-changing, deposits There was only 0.5-0.8m in some steep dip and extra-narrow vein orebody thicknesses, some even only 0.1-0.2m, these ore bodies are mostly height Grade rich ore, but traditional mining methods are helpless, it is necessary to according to Steeply dipping narrow deposits feature, find out one it is feasible Mining methods, accomplish to make the best use of everything, turn the foul and rotten into the rare and ethereal.
The content of the invention
Steep dip and extra-narrow vein high-grade rich ore can not be exploited the invention aims to solving in the prior art, cause A kind of the problem of waste of underground limited resources, there is provided recovery method of very thin high-dipping ore block.
In order to achieve the above object, the present invention uses following technical scheme:
A kind of recovery method of very thin high-dipping ore block, comprises the following steps:
1)Block structure parameter divides:Ore body across pitch is divided into nugget, the high 45-80m of nugget, the wide 60-100m of nugget;Nugget Inside stay and set fore-set, foundation and studding, wherein fore-set thickness 5-8m, foundation thickness 5-10m, the wide 2-5m of studding;
2)Adopt quasi- cutting:Phase of boring transportation roadway first, across pitch tunnels lower wall courtyard supreme one every 10-16m in nugget Stage transportation roadway, the inclination angle of lower wall courtyard are equal to the slanting angle of ore body, the specifications section of lower wall courtyard for 2.4m × 3.0m~3.6m × 4.8m, lower wall courtyard side overlap with ore body lower wall ore-rock boundary, dig drawing chute in foundation, drawing chute and nugget it Between space as the compensation space for falling ore deposit;
3)Back production ore removal:From transportation roadway on last stage, through lower wall courtyard, every 5-8m height, tunnel and dig in lower wall courtyard both sides Rock chamber, drilling chamber long 2.5-3.0m, specifications section 2.4m × 2.4m~3.0m × 3.0m;In drilling chamber under Drilling to Fall ore deposit medium-length hole, it is lower to falling ore deposit medium-length hole using lower wall courtyard and compensation space as scope of freedom Luo Kuang, broken ore not ore removal, treat each After the completion of segment blast, by drawing chute concentrating mining.
Further, when tunneling the lower wall courtyard, first explosion country rock part, after the completion of the clear bottom of country rock, then explosion ore Part, and replica selection is reclaimed.
Further, ore body is the significantly very thin high-dipping ore block of ore-rock boundary.
The present invention has the advantages that relative to prior art:
A kind of recovery method of very thin high-dipping ore block of the present invention is in the exploitation of very thin steep narrow veins, particularly ore deposit Arteries and veins thickness can substantially reduce ore dilution rate and ore loss ratio in the exploitation of 0.2-0.8m mineral ore;Present invention process letter Singly, during lower wall upraise, part replica selection is produced;Personnel are passed in and out by lower wall courtyard, are made in the drilling chamber of spaciousness Industry, security are good.
Brief description of the drawings
Fig. 1 is the front view of the present invention.
Fig. 2 is the side view of the present invention.
Reference implication is as follows:1. fore-set;2. foundation;3. studding;4. stage transportation roadway;5. lower wall courtyard;6. Transportation roadway on last stage;7. drawing chute;8. drilling chamber;To falling ore deposit medium-length hole under 9.;10. compensation space;11. collapse Fall ore.
Embodiment
Northwest gold deposit ore body is in stratiform output, and thickness change is complicated, some some steep dip and extra-narrow vein ore deposits to be present Body thickness only has 0.5-0.8m, and some even only 0.1-0.2m, these ore bodies are mostly high-grade rich ore, and local ore body even has Rusty gold output;But the resuing stoping mining methods that mine uses are helpless.Design uses of the present invention one The recovery method of the very thin high-dipping ore block of kind, production capacity of mining field is about 34t/d.
The present invention is described further with reference to the accompanying drawings and detailed description.
Such as Fig. 1-2, very thin high-dipping ore block recovery method of the invention is in the embodiment of the ore deposit:
Block structure parameter divides:Ore body across pitch is divided into nugget, the high 45-80m of nugget, the wide 60-100m of nugget;In nugget Stay and set fore-set 1, foundation 2 and studding 3, wherein 1 thick 5-8m of fore-set, 2 thick 5-10m of foundation, 3 wide 2-5m of studding.
Adopt quasi- cutting:By stage transportation roadway 4, across pitch tunnels 5 supreme single order of lower wall courtyard every 15m in nugget first Section transportation roadway 6, the inclination angle of lower wall courtyard 5 are equal to the slanting angle of ore body, and specifications section 2.4m × 3.0m~3.6m of lower wall courtyard × 4.8m, the side of lower wall courtyard 5 overlaps with ore body lower wall ore-rock boundary;Drawing chute 7 is dug in foundation 1, digs drawing chute Space between 7 and nugget is as the compensation space 10 for falling ore deposit.
Back production ore removal:From transportation roadway 6 on last stage, through lower wall courtyard 5, every 5-8m height, dug in the both sides of lower wall courtyard 5 Enter drilling chamber 8, drilling chamber 8 long 2.5-3.0m, specifications section 2.4m × 2.4m~3.0m × 3.0m;In drilling chamber 8 To ore deposit medium-length hole 9 is fallen under Drilling, fall ore deposit medium-length hole 9 with lower wall courtyard 5 and compensation space 10 for scope of freedom Luo Kuang;Broken ore 11 Not ore removal, after the completion for the treatment of each segment blast, by the concentrating mining of drawing chute 7.

Claims (3)

1. a kind of recovery method of very thin high-dipping ore block, it is characterized in that, comprise the following steps:
1)Block structure parameter divides:Ore body across pitch is divided into nugget, the high 45-80m of nugget, the wide 60-100m of nugget;Nugget Inside stay and set fore-set(1), foundation(2)And studding(3), wherein fore-set(1)Thick 5-8m, foundation(2)Thick 5-10m, studding(3)Wide 2- 5m;
2)Adopt quasi- cutting:Phase of boring transportation roadway first(4), across pitch tunnels lower wall courtyard every 10-16m in nugget(5) To transportation roadway on last stage(6), lower wall courtyard(5)Inclination angle be equal to the slanting angle of ore body, lower wall courtyard(5)Specifications section be 2.4m × 3.0m~3.6m × 4.8m, lower wall courtyard(5)Side overlaps with ore body lower wall ore-rock boundary, in foundation(1)Middle digging ore drawing Funnel(7), drawing chute(7)Space between body to be dug up mine is as the compensation space for falling ore deposit(10);
3)Back production ore removal:From transportation roadway on last stage(6), through lower wall courtyard(5), every 5-8m height, in lower wall courtyard(5)Two Drilling chamber is tunneled in side(8), drilling chamber(8)Long 2.5-3.0m, specifications section 2.4m × 2.4m~3.0m × 3.0m;In rock drilling Chamber(8)To falling ore deposit medium-length hole under middle Drilling(9), it is lower to falling ore deposit medium-length hole(9)With lower wall courtyard(5)And compensation space(10)For Scope of freedom Luo Kuang, broken ore(11)Not ore removal, after the completion for the treatment of each segment blast, by drawing chute(7)Concentrating mining.
2. a kind of recovery method of very thin high-dipping ore block according to right will go 1, it is characterized in that:Tunnel the lower wall day Well(5)When, first explosion country rock part, after the completion of the clear bottom of country rock, then explosion ore fraction, and replica selection is reclaimed.
3. a kind of recovery method of very thin high-dipping ore block according to right will go 1, it is characterized in that:The ore body is ore-rock The significantly very thin high-dipping ore block of boundary.
CN201711206644.6A 2017-11-27 2017-11-27 A kind of recovery method of very thin high-dipping ore block Pending CN107829740A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109630118A (en) * 2018-11-16 2019-04-16 西北矿冶研究院 A kind of high-dipping lean ore body recovery method built on the sand
CN110094205A (en) * 2019-05-23 2019-08-06 唐山三友矿山有限公司 A kind of control method improving limestone exploitation quality
CN110952982A (en) * 2019-11-14 2020-04-03 西安建筑科技大学 Medium-length hole presplitting blasting mining method for steeply inclined thin-vein to extremely thin-vein ore body

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1650910A1 (en) * 1986-11-24 1991-05-23 Институт горного дела Method of mining thin steep ore bodies
CN104153780A (en) * 2014-07-28 2014-11-19 鞍钢集团矿业公司 Sublevel caving shrinkage continuous recovery process for thin ore body
RU2553819C1 (en) * 2014-04-15 2015-06-20 Открытое акционерное общество Приаргунское производственное горно-химическое объединение (ОАО ППГХО) Method of setting of alowable minimum thickness of ore body for sublevel pillar-and-breast system
CN106285678A (en) * 2016-10-24 2017-01-04 中南大学 Annular medium-length hole stage mineral building mining methods

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1650910A1 (en) * 1986-11-24 1991-05-23 Институт горного дела Method of mining thin steep ore bodies
RU2553819C1 (en) * 2014-04-15 2015-06-20 Открытое акционерное общество Приаргунское производственное горно-химическое объединение (ОАО ППГХО) Method of setting of alowable minimum thickness of ore body for sublevel pillar-and-breast system
CN104153780A (en) * 2014-07-28 2014-11-19 鞍钢集团矿业公司 Sublevel caving shrinkage continuous recovery process for thin ore body
CN106285678A (en) * 2016-10-24 2017-01-04 中南大学 Annular medium-length hole stage mineral building mining methods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刘念苏: "《金属矿床开采》", 31 August 2012, 冶金工业出版社 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109630118A (en) * 2018-11-16 2019-04-16 西北矿冶研究院 A kind of high-dipping lean ore body recovery method built on the sand
CN110094205A (en) * 2019-05-23 2019-08-06 唐山三友矿山有限公司 A kind of control method improving limestone exploitation quality
CN110952982A (en) * 2019-11-14 2020-04-03 西安建筑科技大学 Medium-length hole presplitting blasting mining method for steeply inclined thin-vein to extremely thin-vein ore body
CN110952982B (en) * 2019-11-14 2021-03-02 西安建筑科技大学 Medium-length hole presplitting blasting mining method for steeply inclined thin-vein to extremely thin-vein ore body

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