CN104632220B - 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 PDF

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Publication number
CN104632220B
CN104632220B CN201410751615.8A CN201410751615A CN104632220B CN 104632220 B CN104632220 B CN 104632220B CN 201410751615 A CN201410751615 A CN 201410751615A CN 104632220 B CN104632220 B CN 104632220B
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China
Prior art keywords
stope
ore
3m
top
bar post
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CN201410751615.8A
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Chinese (zh)
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CN104632220A (en
Inventor
邓红卫
周科平
李杰林
李斌
郭洪泉
王敏
罗黎明
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中南大学
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Priority to CN201410751615.8A priority Critical patent/CN104632220B/en
Publication of CN104632220A publication Critical patent/CN104632220A/en
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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 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

Gently inclined medium thick orebody bar post reproduces the controlled mining methods of stope structure size adjustable

Technical field

The present invention relates to a kind of mining methods, more particularly to one kind are applied to the supply of underground mine filling raw material not filling Foot, ore body roof and floor moderately stable, the grade of ore is relatively low, earth's surface does not allow avalanche the slow of the exploitation of gently inclined medium thick orebody incline Tiltedly middle thickness orebody bar post reproduces 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, due to being limited by goaf exposed area, passes System mining methods are often through reducing stope area, reserved substantial amounts of continuous ore pillar ensures the safety of exploitation process, more afterwards Bashing two step reclaims ore pillar.But in the mine that the supply of filling raw material is not enough, or exploitation filling cost control ratio More sensitive low-grade ore body, it is impossible to carry out extensive filling to goaf, is restricted using the method for mining by the way of filling, in turn results in Pillar recovery operational difficulties even cannot back production a difficult problem.

Content of the invention

The technical problem to be solved is a kind of job safety of offer, production efficiency is high, ore loss ratio is relatively low, The less gently inclined medium thick orebody bar post of required filling raw material reproduces the controlled mining methods of stope structure size adjustable.

In order to solve the above problems, the gently inclined medium thick orebody bar post that the present invention provides reproduces stope structure size adjustable can Control mining methods, ensure exploitation process job safety using cutting top roof bolting in advance;Returned using medium-length hole ore blast, retrusive Adopt, scraper ore removal realizes the high winning technology of Ore;Do not stay studding along orebody strike, reduce ore loss ratio;Using barren rock Slip casting is cementing to construct artificial bar post support goaf top plate, realizes effective management of stope ground pressure.

The present invention specifically comprises the following steps that

(1) divide panel along orebody trend, divide segmentation in panel, between segmentation, stay the continuous ore pillar of across pitch, across strike Do not stay studding;

(2) across pitch arrangement stope, with each segmentation stope of Zigzag type Cai Zhun ramp UNICOM, in the continuous ore pillar in panel bottom Arrangement drop shaft, the level haulageway of UNICOM's ore body lower wall, constitute panel transportation system;Stope roof centre position arrangement cuts top Tunnel, cuts top shield top in advance before back production;Stope sill intermediate arrangement rock drilling ore removal route, Drilling in the continuous ore pillar in stope both sides Slot raise, forms cutting groove with slot raise for scope of freedom explosion, as the explosion scope of freedom of extensive back production;Continuous ore pillar Interior across pitch arranges stowboard, near stope side ceiling location arrangement filling connecting taxiway, as artificial bar post packing job Passage;

(3) back production is freely carried out towards adopting quasi- ramp retrusive for explosion with cutting groove, fan shaped medium length hole falls ore deposit, scraper Machine ore removal;Reproduce artificial bar post roof supporting so that barren rock slip casting is cementing in goaf, realize stope ground pressure control;Using downdraft mode Stopping sequence, after upper substoping finishes, this segmentation is adopted quasi- ramp and is no longer retained.

Specifically, the physical dimension of continuous ore pillar is 10m, and Width of stope is 20m, and length is 80m.

Specifically, the specification adopting quasi- ramp is 3m × 3m, and the specification of rock drilling ore removal route is 3m × 3m, slot raise Specification is 2m × 2m, and the specification of stowboard is 3m × 3m, and the specification of filling connecting taxiway is 3m × 3m, and the specification cutting top tunnel is 3m × 3m, the specification 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 When big, ramp slope control is made in the range of scraper climbing capacity by the method elongating oblique distance.Adopt quasi- ramp and fill Filling out tunnel concrete arrangement is: stowboard-rock drilling enters section ramp along ore body backplane;Rock drilling route-filling lane Road section ramp is arranged with the gradient 1/7;Adopt quasi- ramp-filling connecting taxiway section stowboard to arrange with the gradient 1/7, through secondary Gradient adjustment enables scraper to transport barren rock to filling connecting taxiway the packing job carrying out artificial bar post.

Cut top tunnel to pass through to cut top connecting taxiway and stowboard UNICOM, before the extensive back production of Ore, rock drilling equipment is cutting top In tunnel, Drilling shallow bore hole is cut top in advance to ore body roof, and is adopted using the supporting means such as anchor pole, anchor cable or shot anchor net Field Roof, ensures that stoping operation is safe and efficient.

Barren rock is poured into from filling connecting taxiway to goaf using scraper, piles up and construct the barren rock meeting top area 20m × 5m Filling bar post, and embedding Grouting Pipe in advance, treat that bar post forms injection cement mortar immediately and makes obturator cementing;When artificial bar post fills Fill out after body meets top plate supporting Capability Requirement and carry out next step stoping operation again.

According to engineering geological survey, mechanical test and numerical simulation result, determine the limit exposed area in goaf;On top The poor region of plate rock crusher, steadiness, by reducing Width of stope, reducing artificial bar intercolumniation, increase and connect top area or adopt With methods such as shields top effect preferable supporting means (as shot anchor net combined supporting), realize the effective management to stope ground pressure;Instead It, then increase Width of stope reducing the ore losses of continuous ore pillar, or increase artificial bar intercolumniation to reduce waste fill amount And filling cost.

Length of stope arrangement is not affected by top board exposed area, is adjusted flexibly between 80~160m.

Gently inclined medium thick orebody bar post using technique scheme reproduces the controlled mining methods of stope structure size adjustable, Its advantage is, with each stope of Zigzag type Cai Zhun ramp UNICOM, to reduce the ramp angle during transport of scraper ore removal;Edge Orebody strike does not stay studding, reduces ore losses, improves the economic benefit in mine;Top board is cut in advance with top shield top, Ensure that exploitation process job safety is efficient;With stope propulsion, reproduce artificial bar post and prop up using barren rock slip casting is cementing Support goaf top plate, realizes the effective management pressed over the ground;Artificial bar intercolumniation, to connect top area, Stope dimension controllable, can The flexible arrangement when roof condition is complicated, the scope of application is wider.

In sum, the present invention is a kind of job safety, production efficiency is high, ore loss ratio is relatively low, required filling raw material Less gently inclined medium thick orebody bar post reproduces the controlled mining methods of stope structure size adjustable.

Brief description

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 be along along Fig. 1-line profile.

Fig. 3 be along along Fig. 1-line profile.

Fig. 4 be along along Fig. 1-line profile.

Fig. 5 be along along Fig. 1-line profile.

In figure: 1. artificial bar post, 2. back production blasthole, 3. cut top connecting taxiway, 4. rock drilling ore removal route, 5. adopt quasi- ramp, 6. drop shaft, 7. continuous ore pillar, 8. stage haulage way, 9. cutting groove, 10. slot raise, 11. filling connecting taxiways, 12. filling lanes Road, 13. broken ores, 14. anchor poles, 15. cut top tunnel, 16. Grouting Pipe.

Specific embodiment

The invention will be further described below in conjunction with the accompanying drawings.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, divide panel along orebody trend, divide segmentation in panel, between segmentation, stay edge The continuous ore pillar 7 of trend, the physical dimension of continuous ore pillar 7 is 10m, and Width of stope is 20m, and length is 80m.Across pitch arrangement is adopted , each segmentation stope of quasi- ramp 5 UNICOM is adopted with Zigzag type, arrangement drop shaft 6, UNICOM's ore body lower wall in the continuous ore pillar in panel bottom Level haulageway 8, constitute level haulage system.Stope roof intermediate arrangement cuts top tunnel 15, and by cutting top connecting taxiway 3 With stowboard 12 UNICOM, before back production, in advance top is cut to ore body roof, and install anchor pole 14 shield top.From adopting quasi- ramp to stope Tunnel rock drilling ore removal route 4 for both sides, and Drilling slot raise 10 in the continuous ore pillar in stope both sides is quick-fried for the scope of freedom with slot raise Broken formation cutting groove 9, as the explosion scope of freedom of extensive back production.In continuous ore pillar, across pitch arrangement stowboard 12, close Stope side ceiling location arrangement filling connecting taxiway 11, as the passage of artificial bar post 1 packing job.

Adopt quasi- ramp 5 and stowboard 12 concrete arrangement is: stowboard-ore removal enters section ramp along ore body Backplane;Ore removal route-stowboard section ramp is arranged with the gradient 1/7;Adopt quasi- ramp-filling connecting taxiway section filling lane Road is arranged with the gradient 1/7, enables scraper to transport barren rock through the adjustment of the secondary gradient and carries out manually to filling connecting taxiway 11 The packing job of bar post.

The specification adopting quasi- ramp 5 is 3m × 3m, and the specification of rock drilling ore removal route 4 is 3m × 3m, the rule of slot raise 10 Lattice are 2m × 2m, and the specification of stowboard 12 is 3m × 3m, and the specification of filling connecting taxiway 11 is 3m × 3m, cuts the rule in top tunnel 15 Lattice are 3m × 3m, and the specification cutting top connecting taxiway 3 is 3m × 3m.

Rock drilling equipment Drilling fan shaped medium length hole 2 in rock drilling ore removal route 4, with cutting groove 9 for explosion freely towards adopting standard Ramp 5 retrusive carries out back production, carries out ore removal transport using scraper.Downdraft mode stopping sequence, upper segmentation is carried out in stage casing After back production finishes, this segmentation is adopted quasi- ramp 5 and is no longer retained.

Artificial bar intercolumniation is determined according to Stope roof country rock steadiness and shield top effect, is got in touch with from filling using scraper Road 11 pours barren rock into goaf, piles up and constructs the waste fill bar post meeting top area 20m × 5m, and embedding Grouting Pipe in advance 16, treat that bar post forms injection cement mortar immediately and makes obturator cementing;Exploitation process strengthens the monitoring to strength of filling mass, when it Carry out next step stoping operation again after meeting top plate supporting Capability Requirement.

Claims (6)

1. a kind of gently inclined medium thick orebody bar post reproduces the controlled mining methods of stope structure size adjustable, using cutting top anchor pole in advance Shield top ensures exploitation process job safety;Efficiently returning of Ore is realized using medium-length hole ore blast, drawing back, scraper ore removal Adopt;Do not stay studding along orebody strike, reduce ore loss ratio;Construct artificial bar post support goaf using barren rock slip casting is cementing Top board, realizes effective management of stope ground pressure, it is characterized in that: specifically comprise the following steps that
(1) divide panel along orebody trend, divide segmentation in panel, stay the continuous ore pillar of across pitch between segmentation, across strike is not stayed Studding;
(2) across pitch arrangement stope, with arrangement in each segmentation stope of Zigzag type Cai Zhun ramp UNICOM, the continuous ore pillar in panel bottom Drop shaft, the level haulageway of UNICOM's ore body lower wall, constitute panel transportation system;Qie Ding lane is arranged in Stope roof centre position Road, cuts top shield top in advance before back production;Stope sill intermediate arrangement rock drilling ore removal route, in the continuous ore pillar in stope both sides, Drilling is cut Cut courtyard, cutting groove is formed for scope of freedom explosion with slot raise, as the explosion scope of freedom of extensive back production;In continuous ore pillar Across pitch arranges stowboard, near stope side ceiling location arrangement filling connecting taxiway, as artificial bar post packing job Passage;
(3) back production is freely carried out towards adopting quasi- ramp retrusive for explosion with cutting groove, fan shaped medium length hole falls ore deposit, scraper goes out Ore deposit;Reproduce artificial bar post roof supporting so that barren rock slip casting is cementing in goaf, realize stope ground pressure control;Using downdraft mode back production Sequentially, after upper substoping finishes, this segmentation is adopted quasi- ramp and is no longer retained.
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: the physical dimension of described continuous ore pillar is 10m, Width of stope is 20m, length is 80m.
3. gently inclined medium thick orebody bar post according to claim 1 and 2 reproduces the controlled mining side of stope structure size adjustable Method, is characterized in that: described top tunnel of cutting is passed through to cut top connecting taxiway and stowboard UNICOM, before the extensive back production of Ore, rock drilling Equipment is cut top to ore body roof in advance cutting Drilling shallow bore hole in the tunnel of top, and using anchor pole, anchor cable or shotcrete rock bolt wire mesh support handss Duan Jinhang Stope roof is safeguarded, ensures that stoping operation is safe and efficient.
4. gently inclined medium thick orebody bar post according to claim 3 reproduces the controlled mining methods of stope structure size adjustable, It is characterized in that: the described specification adopting quasi- ramp is 3m × 3m, the specification of described rock drilling ore removal route is 3m × 3m, described The specification of slot raise be 2m × 2m, the specification of described stowboard is 3m × 3m, the specification of described filling connecting taxiway For 3m × 3m, the described specification cutting top tunnel is 3m × 3m, and the described specification cutting top connecting taxiway is 3m × 3m.
5. gently inclined medium thick orebody bar post according to claim 1 and 2 reproduces the controlled mining side of stope structure size adjustable Method, is characterized in that: pours barren rock from filling connecting taxiway to goaf using scraper, piles up to construct and connect top area 20m × 5m's Waste fill bar post, and embedding Grouting Pipe in advance, treat that bar post forms injection cement mortar immediately and makes obturator cementing;When artificial bar Post obturator carries out next step stoping operation after meeting top plate supporting Capability Requirement again.
6. gently inclined medium thick orebody bar post according to claim 1 and 2 reproduces the controlled mining side of stope structure size adjustable Method, is characterized in that: length of stope arrangement is not affected by top board exposed area, can be adjusted flexibly between 80~160m.
CN201410751615.8A 2014-12-09 2014-12-09 Mining method with adjustable and controllable structure size of gentle dip medium-thickness ore body strip column reconstructed stope CN104632220B (en)

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Families Citing this family (9)

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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
CN106150504B (en) * 2016-08-04 2018-05-15 西北矿冶研究院 A kind of advanced quick-fried power in top of cutting transports ore deposit sublevel stoping
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
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
CN106593447B (en) * 2017-02-24 2019-03-05 贵州开磷集团股份有限公司 A kind of underground mining gently inclined medium thick orebody mining methods
CN107762515B (en) * 2017-11-15 2019-06-21 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
CN108868771B (en) * 2018-06-29 2020-03-10 中南大学 Mining method for horizontal medium-length hole stoping of inclined medium-thickness ore body
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

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CN101881169A (en) * 2010-06-25 2010-11-10 东北大学 Sublevel shrinkage caving stage open stope afterwards filling mining method
CN103114854B (en) * 2013-02-18 2015-01-14 中南大学 Pillar robbing method of reconstructed artificial stud
CN103790588B (en) * 2014-01-15 2016-03-23 贵州开磷集团股份有限公司 A kind of gently inclined orebody is from slipping mining methods

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