CN104632220A - Mining method with adjustable and controllable structure size of gentle dip medium-thickness ore body strip column reconstructed stope - Google Patents
Mining method with adjustable and controllable structure size of gentle dip medium-thickness ore body strip column reconstructed stope Download PDFInfo
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- CN104632220A CN104632220A CN201410751615.8A CN201410751615A CN104632220A CN 104632220 A CN104632220 A CN 104632220A CN 201410751615 A CN201410751615 A CN 201410751615A CN 104632220 A CN104632220 A CN 104632220A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005065 mining Methods 0.000 title claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000007569 slipcasting Methods 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims abstract description 6
- 239000011435 rock Substances 0.000 claims description 30
- 238000005553 drilling Methods 0.000 claims description 21
- 238000004880 explosion Methods 0.000 claims description 9
- 230000011218 segmentation Effects 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000011083 cement mortar Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 239000011378 shotcrete Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000003292 glue Substances 0.000 abstract 1
- 239000004575 stone Substances 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
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- 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)
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- Geochemistry & Mineralogy (AREA)
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- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention discloses a mining method with an adjustable and controllable structure size of a gentle dip medium-thickness ore body strip column reconstructed stope. The work of a recovery process is safe by adopting an advanced top cutting anchor rod support roof; efficient recovery of ores is realized by middle-deep hole ore break down, retreating type recovery and ore removal of a carry scraper; a studding is not formed along the inclined direction of an ore body and thus the loss rate of ores is reduced; and a goaf roof is supported by a waste stone slip casting glue structured artificial strip column so that the effective management on ground pressure of the stope is realized. The mining method with the adjustable and controllable structure size of the gentle dip medium-thickness ore body strip column reconstructed stope, disclosed by the invention, has the advantages that the working is safe, the production efficiency is high, the loss rate of the ores is relatively low, and few filling raw materials are needed.
Description
Technical field
The present invention relates to a kind of mining methods, particularly relate to and be a kind ofly applicable to the gently inclined medium thick orebody bar post that underground mine filling raw material supplying is inadequate, ore body roof and floor moderately stable, the grade of ore are lower, earth's surface does not allow the exploitation of the gently inclined medium thick orebody of avalanche and reproduce the controlled mining methods of stope structure size adjustable.
Background technology
The exploitation of the gently inclined medium thick orebody of roof and floor moderately stable, owing to being subject to the restriction of goaf exposed area, conventional mining method is often through the safety reducing stope area, reserved a large amount of continuous ore pillar ensures exploitation process, then afterwards filling goaf two step reclaims ore pillar.But in the mine of filling raw material supplying deficiency, or exploitation filling cost controls than more sensitive low-grade ore body, extensive filling cannot be carried out to goaf, use the method for mining by the way of filling to be restricted, and then cause pillar recovery operational difficulties even cannot the difficult problem of back production.
Summary of the invention
The gently inclined medium thick orebody bar post that technical problem to be solved by this invention is to provide a kind of job safety, production efficiency is high, ore loss ratio is lower, required filling raw material is less reproduces the controlled mining methods of stope structure size adjustable.
In order to solve the problem, gently inclined medium thick orebody bar post provided by the invention reproduces the controlled mining methods of stope structure size adjustable, adopts Advanced overcut roof bolting to ensure exploitation process job safety; Adopt medium-length hole ore blast, high winning technology that drawing back, scraper ore removal realize ore; Do not stay studding along orebody strike, reduce ore loss ratio; The slip casting of employing barren rock is cementing constructs artificial bar post support goaf top plate, realizes effective management of stope ground pressure.
Concrete steps of the present invention are as follows:
(1) divide panel along orebody trend, divide segmentation in panel, point intersegmental continuous ore pillar staying across pitch, across strike does not stay studding;
(2) across pitch arranges stope, with each segmentation stope of Zigzag type Cai Zhun ramp UNICOM, arranges drop shaft, the level haulageway of UNICOM's ore body lower wall bottom panel in continuous ore pillar, forms panel transportation system; Stope roof centre position is arranged and is cut tunnel, top, and before back production, Advanced overcut protects top; Stope sill intermediate arrangement rock drilling ore removal route, Drilling slot raise in the continuous ore pillar in stope both sides is that scope of freedom explosion forms cutting groove, as the explosion scope of freedom of extensive back production with slot raise; In continuous ore pillar, across pitch arranges stowboard, arranges filling connecting taxiway, as the passage of artificial bar post packing job near stope side ceiling location;
(3) be that back production is carried out to adopting accurate ramp retrusive in the explosion scope of freedom with cutting groove, fan shaped medium length hole falls ore deposit, scraper ore removal; Reproduce artificial bar post roof supporting so that barren rock slip casting is cementing in goaf, realize stope ground pressure and control; Adopt downdraft mode stopping sequence, after upper substoping, this segmentation is adopted accurate ramp and is no longer retained.
Particularly, the physical dimension of continuous ore pillar is 10m, and Width of stope is 20m, and length is 80m.
Particularly, the specification of adopting accurate ramp is 3m × 3m, and the specification of rock drilling ore removal route is 3m × 3m, the specification of slot raise is 2m × 2m, and the specification of stowboard is 3m × 3m, and the specification of filling connecting taxiway is 3m × 3m, the specification of cutting tunnel, top is 3m × 3m, and the specification of cutting top connecting taxiway is 3m × 3m.
With each stope of Cai Zhun ramp UNICOM and stowboard, reduce the ramp angle of scraper, when the slanting angle of ore body becomes large, make ramp slope control within the scope of scraper climbing capacity by the method for elongating oblique distance.Adopt accurate ramp and the concrete arrangement of stowboard is: stowboard-rock drilling route section ramp is along ore body backplane; Rock drilling route-stowboard section ramp is arranged with the gradient 1/7; Adopt accurate ramp-filling connecting taxiway section stowboard to arrange with the gradient 1/7, enable scraper that barren rock is transported to the packing job that filling connecting taxiway carries out artificial bar post through the adjustment of the secondary gradient.
Cut tunnel, top by cutting top connecting taxiway and stowboard UNICOM; before the extensive back production of ore; rock drilling equipment carries out Advanced overcut to ore body roof cutting Drilling shallow bore hole in tunnel, top, and adopts the supporting means such as anchor pole, anchor cable or shot anchor net to carry out Stope roof maintenance, ensures that stoping operation is safe and efficient.
Adopt scraper to pour barren rock from filling connecting taxiway into goaf, pile up the waste fill bar post constructed and meet top area 20m × 5m, and embedding Grouting Pipe in advance, treat that bar post is formed and inject cement mortar immediately and make obturation cementing; Next step stoping operation is carried out again after artificial bar post obturation meets top plate supporting Capability Requirement.
According to engineering geological survey, mechanical test and numerical simulation result, determine the limit exposed area in goaf; , steadiness poor region broken at roof rock, by reducing Width of stope, reduce artificial bar intercolumniation, increase and connect top area or employing and protect the methods such as the top good supporting means of effect (as shot anchor net combined supporting), realize the effective management to stope ground pressure; Otherwise, then increase Width of stope to reduce the ore losses of continuous ore pillar, or increase artificial bar intercolumniation to reduce waste fill amount and filling cost.
Length of stope is arranged not to be affected by top board exposed area, adjusts flexibly between 80 ~ 160m.
Adopt the gently inclined medium thick orebody bar post of technique scheme to reproduce the controlled mining methods of stope structure size adjustable, its beneficial effect is, with each stope of Zigzag type Cai Zhun ramp UNICOM, reduces the ramp angle during transport of scraper ore removal; Do not stay studding along orebody strike, reduce ore losses, improve the economic benefit in mine; Advanced overcut is carried out to top board and protects top, ensured that exploitation process job safety is efficient; Along with stope advances, the slip casting of employing barren rock is cementing reproduces artificial bar post support goaf top plate, realizes effective management of pressing over the ground; Artificial bar intercolumniation, connect top area, Stope dimension is controllable, can when roof condition is complicated flexible arrangement, the scope of application is wider.
In sum, the gently inclined medium thick orebody bar post that the present invention is a kind of job safety, production efficiency is high, ore loss ratio is lower, required filling raw material is less reproduces the controlled mining methods of stope structure size adjustable.
Accompanying drawing explanation
Fig. 1 is the front view that gently inclined medium thick orebody bar post reproduces the controlled Mining method design of stope structure size adjustable.
Fig. 2 is along II-II line sectional drawing in Fig. 1.
Fig. 3 is along III-III line sectional drawing in Fig. 1.
Fig. 4 is along IV-IV line sectional drawing in Fig. 1.
Fig. 5 is along V-V line sectional drawing in Fig. 1.
In figure: 1. artificial bar post, 2. back production big gun hole, 3. cut top connecting taxiway, 4. rock drilling ore removal route, 5. adopts accurate ramp, 6. drop shaft, 7. continuous ore pillar, 8. stage haulage way, 9. cutting groove, 10. slot raise, 11. filling connecting taxiways, 12. stowboards, 13. broken ores, 14. anchor poles, 15. cut tunnel, top, 16. Grouting Pipe.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
See Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, divide panel along orebody trend, divide segmentation in panel, point intersegmental continuous ore pillar 7 staying across pitch, the physical dimension of continuous ore pillar 7 is 10m, and Width of stope is 20m, and length is 80m.Across pitch arranges stope, adopts each segmentation stope of accurate ramp 5 UNICOM with Zigzag type, arranges drop shaft 6, the level haulageway 8 of UNICOM's ore body lower wall bottom panel in continuous ore pillar, forms level haulage system.Stope roof intermediate arrangement cuts tunnel 15, top, and by cutting top connecting taxiway 3 and stowboard 12 UNICOM, to ore body roof Advanced overcut before back production, and installs anchor pole 14 and protects top.Tunneling rock drilling ore removal route 4 to stope both sides, Drilling slot raise 10 in the continuous ore pillar in stope both sides by adopting accurate ramp, is that scope of freedom explosion forms cutting groove 9, as the explosion scope of freedom of extensive back production with slot raise.In continuous ore pillar, across pitch arranges stowboard 12, arranges filling connecting taxiway 11, as the passage of artificial bar post 1 packing job near stope side ceiling location.
Adopting the concrete arrangement of accurate ramp 5 and stowboard 12 is: stowboard-ore removal route section ramp is along ore body backplane; Ore removal route-stowboard section ramp is arranged with the gradient 1/7; Adopt accurate ramp-filling connecting taxiway section stowboard to arrange with the gradient 1/7, enable scraper that barren rock is transported to the packing job that filling connecting taxiway 11 carries out artificial bar post through the adjustment of the secondary gradient.
The specification of adopting accurate ramp 5 is 3m × 3m, the specification of rock drilling ore removal route 4 is 3m × 3m, the specification of slot raise 10 is 2m × 2m, the specification of stowboard 12 is 3m × 3m, the specification of filling connecting taxiway 11 is 3m × 3m, the specification of cutting tunnel 15, top is 3m × 3m, and the specification of cutting top connecting taxiway 3 is 3m × 3m.
Rock drilling equipment is Drilling fan shaped medium length hole 2 in rock drilling ore removal route 4, carries out back production with cutting groove 9 for the explosion scope of freedom to adopting accurate ramp 5 retrusive, adopts scraper to carry out ore removal transport.Carry out downdraft mode stopping sequence in stage casing, after upper substoping, this segmentation is adopted accurate ramp 5 and is no longer retained.
According to Stope roof country rock steadiness and protect top effect determine artificial bar intercolumniation, scraper is adopted to pour barren rock from filling connecting taxiway 11 into goaf, pile up the waste fill bar post constructed and meet top area 20m × 5m, and embedding Grouting Pipe 16 in advance, treat that bar post is formed and inject cement mortar immediately and make obturation cementing; Exploitation process strengthens the monitoring to strength of filling mass, after it meets top plate supporting Capability Requirement, carry out next step stoping operation again.
Claims (10)
1. gently inclined medium thick orebody bar post reproduces the controlled mining methods of stope structure size adjustable, it is characterized in that: adopt Advanced overcut roof bolting to ensure exploitation process job safety; Adopt medium-length hole ore blast, high winning technology that drawing back, scraper ore removal realize ore; Do not stay studding along orebody strike, reduce ore loss ratio; The slip casting of employing barren rock is cementing constructs artificial bar post support goaf top plate, realizes effective management of stope ground pressure.
2. gently inclined medium thick orebody bar post according to claim 1 reproduces the controlled mining methods of stope structure size adjustable, it is characterized in that: concrete steps are as follows:
(1) divide panel along orebody trend, divide segmentation in panel, point intersegmental continuous ore pillar staying across pitch, across strike does not stay studding;
(2) across pitch arranges stope, with each segmentation stope of Zigzag type Cai Zhun ramp UNICOM, arranges drop shaft, the level haulageway of UNICOM's ore body lower wall bottom panel in continuous ore pillar, forms panel transportation system; Stope roof centre position is arranged and is cut tunnel, top, and before back production, Advanced overcut protects top; Stope sill intermediate arrangement rock drilling ore removal route, Drilling slot raise in the continuous ore pillar in stope both sides is that scope of freedom explosion forms cutting groove, as the explosion scope of freedom of extensive back production with slot raise; In continuous ore pillar, across pitch arranges stowboard, arranges filling connecting taxiway, as the passage of artificial bar post packing job near stope side ceiling location;
(3) be that back production is carried out to adopting accurate ramp retrusive in the explosion scope of freedom with cutting groove, fan shaped medium length hole falls ore deposit, scraper ore removal; Reproduce artificial bar post roof supporting so that barren rock slip casting is cementing in goaf, realize stope ground pressure and control; Adopt downdraft mode stopping sequence, after upper substoping, this segmentation is adopted accurate ramp and is no longer retained.
3. gently inclined medium thick orebody bar post according to claim 2 reproduces the controlled mining methods of stope structure size adjustable, it is characterized in that: the physical dimension of described continuous ore pillar is 10m, and Width of stope is 20m, and length is 80m.
4. the gently inclined medium thick orebody bar post according to Claims 2 or 3 reproduces the controlled mining methods of stope structure size adjustable, it is characterized in that: the described specification of adopting accurate ramp is 3m × 3m, the specification of described rock drilling ore removal route is 3m × 3m, the specification of described slot raise is 2m × 2m, the specification of described stowboard is 3m × 3m, the specification of described filling connecting taxiway is 3m × 3m, and the described specification of cutting tunnel, top is 3m × 3m, and the described specification of cutting top connecting taxiway is 3m × 3m.
5. the gently inclined medium thick orebody bar post according to Claims 2 or 3 reproduces the controlled mining methods of stope structure size adjustable, it is characterized in that: described adopt accurate ramp and the concrete arrangement of stowboard is: stowboard-rock drilling route section ramp is along ore body backplane; Rock drilling route-stowboard section ramp is arranged with the gradient 1/7; Adopt accurate ramp-filling connecting taxiway section stowboard to arrange with the gradient 1/7, enable scraper that barren rock is transported to the packing job that filling connecting taxiway carries out artificial bar post through the adjustment of the secondary gradient.
6. the gently inclined medium thick orebody bar post according to Claims 2 or 3 reproduces the controlled mining methods of stope structure size adjustable; it is characterized in that: described cuts tunnel, top by cutting top connecting taxiway and stowboard UNICOM; before the extensive back production of ore; rock drilling equipment cut top tunnel in Drilling shallow bore hole Advanced overcut is carried out to ore body roof; and adopt anchor pole, anchor cable or shotcrete rock bolt wire mesh support means to carry out Stope roof maintenance, ensure that stoping operation is safe and efficient.
7. the gently inclined medium thick orebody bar post according to Claims 2 or 3 reproduces the controlled mining methods of stope structure size adjustable, it is characterized in that: adopt scraper to pour barren rock from filling connecting taxiway into goaf, pile up the waste fill bar post constructed and meet top area 20m × 5m, and embedding Grouting Pipe in advance, treat that bar post is formed and inject cement mortar immediately and make obturation cementing; Next step stoping operation is carried out again after artificial bar post obturation meets top plate supporting Capability Requirement.
8. the gently inclined medium thick orebody bar post according to Claims 2 or 3 reproduces the controlled mining methods of stope structure size adjustable, it is characterized in that: according to engineering geological survey, mechanical test and numerical simulation result, determines the limit exposed area in goaf; , steadiness poor region broken at roof rock, by reducing Width of stope, reduces artificial bar intercolumniation, increases and connect top area or the good supporting means and methods of top effect is protected in employing, realize the effective management to stope ground pressure; Otherwise, then increase Width of stope to reduce the ore losses of continuous ore pillar, or increase artificial bar intercolumniation to reduce waste fill amount and filling cost.
9. gently inclined medium thick orebody bar post according to claim 8 reproduces the controlled mining methods of stope structure size adjustable, it is characterized in that: it is shot anchor net Support Method that the good supporting means of effect are pushed up in described protecting.
10. the gently inclined medium thick orebody bar post according to Claims 2 or 3 reproduces the controlled mining methods of stope structure size adjustable, it is characterized in that: length of stope is arranged not to be affected by top board exposed area, can adjust flexibly between 80 ~ 160m.
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Cited By (10)
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| CN105626074A (en) * | 2016-02-04 | 2016-06-01 | 湖北杉树垭矿业科技开发有限公司 | Thick ore body mining method |
| CN106150504A (en) * | 2016-08-04 | 2016-11-23 | 西北矿冶研究院 | Advanced top-cut explosive-force ore-carrying sublevel mining method |
| CN106285677A (en) * | 2016-08-31 | 2017-01-04 | 湖北三鑫金铜股份有限公司 | Side back production subregion filling studding recovery method is expanded to route on Chao Qian |
| CN106351692A (en) * | 2016-09-22 | 2017-01-25 | 中南大学 | Waste rock cementing pillar filling mining method for gently-inclined thin ore bodies |
| CN106593447A (en) * | 2017-02-24 | 2017-04-26 | 贵州开磷集团股份有限公司 | Mining method for gently inclined medium-thickness ore body in underground mining |
| CN107762515A (en) * | 2017-11-15 | 2018-03-06 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | A kind of gently inclined medium thick orebody panel filling mining method |
| CN108868771A (en) * | 2018-06-29 | 2018-11-23 | 中南大学 | A kind of mining methods of horizontal medium-length hole back production slant middle thick orebody |
| CN109057798A (en) * | 2018-08-07 | 2018-12-21 | 中蓝连海设计研究院有限公司 | A kind of wall type filling mining method suitable for gently inclined phosphate body bed |
| CN109505602A (en) * | 2019-01-11 | 2019-03-22 | 湖北三鑫金铜股份有限公司 | To high stratification skew wall route continuous exploitation method under one kind |
| CN112196538A (en) * | 2020-11-19 | 2021-01-08 | 长沙矿山研究院有限责任公司 | Inclined upward mountain combined downward access cemented filling mining method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105626074B (en) * | 2016-02-04 | 2018-04-10 | 湖北杉树垭矿业科技开发有限公司 | A kind of big thick ore body mining methods |
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| CN106150504A (en) * | 2016-08-04 | 2016-11-23 | 西北矿冶研究院 | Advanced top-cut explosive-force ore-carrying sublevel mining method |
| CN106150504B (en) * | 2016-08-04 | 2018-05-15 | 西北矿冶研究院 | Advanced top-cut explosive-force ore-carrying sublevel mining method |
| CN106285677A (en) * | 2016-08-31 | 2017-01-04 | 湖北三鑫金铜股份有限公司 | Side back production subregion filling studding recovery method is expanded to route on Chao Qian |
| CN106351692A (en) * | 2016-09-22 | 2017-01-25 | 中南大学 | Waste rock cementing pillar filling mining method for gently-inclined thin ore bodies |
| CN106351692B (en) * | 2016-09-22 | 2018-06-22 | 中南大学 | A kind of slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling |
| CN106593447A (en) * | 2017-02-24 | 2017-04-26 | 贵州开磷集团股份有限公司 | Mining method for gently inclined medium-thickness ore body in underground mining |
| CN107762515A (en) * | 2017-11-15 | 2018-03-06 | 中冶沈勘秦皇岛工程设计研究总院有限公司 | A kind of gently inclined medium thick orebody panel filling mining method |
| CN108868771A (en) * | 2018-06-29 | 2018-11-23 | 中南大学 | A kind of mining methods of horizontal medium-length hole back production slant middle thick orebody |
| CN109057798A (en) * | 2018-08-07 | 2018-12-21 | 中蓝连海设计研究院有限公司 | A kind of wall type filling mining method suitable for gently inclined phosphate body bed |
| CN109505602A (en) * | 2019-01-11 | 2019-03-22 | 湖北三鑫金铜股份有限公司 | To high stratification skew wall route continuous exploitation method under one kind |
| CN112196538A (en) * | 2020-11-19 | 2021-01-08 | 长沙矿山研究院有限责任公司 | Inclined upward mountain combined downward access cemented filling mining method |
| CN112196538B (en) * | 2020-11-19 | 2022-02-01 | 长沙矿山研究院有限责任公司 | Inclined upward mountain combined downward access cemented filling mining method |
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