CN106351692B - A kind of slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling - Google Patents

A kind of slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling Download PDF

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Publication number
CN106351692B
CN106351692B CN201610840304.8A CN201610840304A CN106351692B CN 106351692 B CN106351692 B CN 106351692B CN 201610840304 A CN201610840304 A CN 201610840304A CN 106351692 B CN106351692 B CN 106351692B
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ore
goaf
filling
artificial
barren rock
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CN106351692A (en
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李杰林
周科平
邓红卫
李志宏
郭洪泉
高峰
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Central South University
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Central South University
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00Methods or devices for placing filling-up materials in underground workings
    • E21F15/06Filling-up mechanically

Abstract

The invention discloses a kind of slight slope and thin ore body barren rock cementing pillar methods of mining by the way of filling, using ramp to adopt quasi- connecting taxiway, use drill jumbo and scraper trackless equipment, Drilling fan shaped medium length hole carries out ore caving, after back production, artificial column is constructed using barren rock consolidated fill mode for drawing back, goaf is supported by artificial column, it is ensured that the exposed area in goaf is in the range of maximum allowable exposed area.The spacing and quantity of artificial column consolidate implementations according to the country rock and roof and floor in goaf and are adjusted, and required casting resin is few, so as to fulfill the safe and efficient back production of ore body under the conditions of casting resin deficiency.The present invention is especially suitable for underground metalliferous mine casting resin is inadequate, and the slight slope and thin ore body back production that thickness is 3 5m, there is the characteristics of simple for process, job safety, production efficiency is high, and required casting resin is few, and ore loss ratio is low, and mining cost is low.

Description

A kind of slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling
Technical field
The present invention relates to a kind of underground metalliferous mine methods of mining by the way of filling, are adopted more particularly to a kind of filling of slight slope and thin ore body Ore deposit method, suitable for underground mine filling lack of material, and the slight slope and thin ore body that the unsteady thickness of roof rock is 3-5m is opened It adopts.
Background technology
Slight slope and thin ore body is always treated as a kind of complicated uneasily mining orebody, and breast stoping, room are used in traditional handicraft more The mining methods such as column method are exploited, and there is the shortcomings of ore loss ratio is high, safety is poor.Especially when country rock and top plate not When firm, goaf top plate inbreak easily occurs, collapses, causes underground hazard.The method of mining by the way of filling is such as used, although can effectively solve The certainly technical barriers such as goaf and underground pressure management, but it is excessively high scarce to also bring along increase packing job process, mining cost simultaneously Point especially when mine lacks enough casting resins, easily causes filling operation to lag or stop, thus can not timely fill Goaf is filled out, the normal production in mine has both been affected, has also left major safety risks to the safety in production in mine.
Invention content
The technical problems to be solved by the invention are to provide one kind when filling in mine material lacks with job safety, required Casting resin is few, the low slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling low with mining cost of ore loss ratio.
In order to solve the above-mentioned technical problem, the slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling that the present invention uses, Using ramp as quasi- connecting taxiway is adopted, using drill jumbo and scraper trackless equipment, Drilling fan shaped medium length hole carries out ore caving, retreats After back production, artificial column is constructed using barren rock consolidated fill mode for formula back production, and goaf is supported by artificial column, it is ensured that The exposed area in goaf is in the range of maximum allowable exposed area.
Specifically, stope across pitch is arranged, using ramp to adopt quasi- connecting taxiway, and is carried out flexibly according to slanting angle of ore body variation Arrangement;A rock drilling ore removal route is tunneled, and a slot raise is tunneled from stope sill to top plate in each Bottom of Stope, with Slot raise forms cutting groove for the scope of freedom;Using drawing back, the Drilling medium-length hole in rock drilling ore removal route, and with cutting Slot carries out ore caving for the scope of freedom, and to improve the production capacity of stope, the ore of avalanche uses scraper via rock drilling ore removal route Carry out ore removal;When goaf, exposed area reaches maximum allowable exposed area, into pedestrian by the way of barren rock consolidated fill Work column is constructed, to support goaf;Achieve the purpose that handle goaf;After artificial column is constructed, continue to adopt Ore body is closed on medium-length hole ore caving technique back production, when the exposed area in goaf is close to maximum allowable exposed area, continues structure Artificial column is built, so recycles, a plurality of artificial column is constructed, so as to fulfill the continuous stoping of ore body.
After ore body back production, goaf is all supported by the cementing artificial column of barren rock;The spacing and quantity of artificial column Implementations are consolidated according to the country rock in goaf and roof and floor to be adjusted, and goaf good in wall rock condition allows exposed area big When, increase the spacing of artificial column, and suitably reduce by artificial column dimension;Conversely, then reducing by artificial intercolumniation, and increase people The size of work column.Realize flexible arrangement.After ore body back production, goaf is all supported by the cementing artificial column of barren rock, from And when mine is without filling system or inadequate casting resin, reach the stability for ensureing goaf, reduce casting resin volume total amount, Reduce the purpose of mining cost.
By adopting quasi- ramp, a filling, ventilation connecting taxiway, filling, connecting taxiway of divulging information are tunneled in continuous ore pillar For slope control in the range of 8%-15%, filling mouth is disposed adjacent to the position of Stope roof.
When constructing artificial column, the barren rock of scraper mechanical shovel dress is directly poured into goaf, is piled into trapezoidal barren rock Heap, while grouting pipe is laid in hillock in advance, slip casting operation is carried out after the size of hillock reaches design requirement, most End form supports goaf top plate into trapezoidal artificial column of barren rock consolidated fill.
It is quasi- to adopt using ramp using the slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling of above-mentioned technical proposal Network road carries out flexible arrangement according to the variation of the slanting angle of ore body and thickness, makes overall slope control between 8%-15%;Using fan Shape medium-length hole ore caving, drawing back, the production efficiency of raising lean ore body;It is mined out that barren rock consolidated fill constructs artificial column support Area, it is ensured that for the exposed area in goaf in the range of maximum allowable exposed area, required casting resin is few, realizes casting resin deficiency item The safe and efficient back production of ore body under part.
The present invention is inadequate suitable for underground metalliferous mine casting resin, and in the slight slope and thin ore body back production that thickness is 3-5m, Simple for process, job safety is realized, the purposes such as required casting resin is few, and ore loss ratio is greatly reduced, and mining cost is low.
It is the invention has the advantages that thin to exploit low-angle dip using the process for stoping of medium-length hole ore caving, scraper ore removal Ore body, and artificial column is constructed using barren rock consolidated fill mode, goaf is supported by artificial column;Between between artificial column It is adjusted, and required casting resin is minimum, solves away from quantity implementations can be consolidated according to the country rock and roof and floor in goaf The problem for the method for mining by the way of filling being used to handle goaf under the conditions of lack of material is filled, pressure has carried out effective management, and reduce over the ground Filling cost, ore recovery ratio is high, and mining cost is low, simple for process, economic benefit significantly improves.
In conclusion the present invention be one kind when filling in mine material lacks with job safety, required casting resin is few, ore The low slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling low with mining cost of loss late.
Description of the drawings
Fig. 1 is slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling design front view, i.e., I-I line, which cuts open, along Fig. 2 shows Figure.
Fig. 2 is the sectional view of II-II line along Fig. 1.
Fig. 3 is the sectional view of III-III line along Fig. 1.
Fig. 4 is IV-IV line profile along Fig. 1.
Fig. 5 is V-V line profile along Fig. 1.
In figure:The continuous ore pillars of 1-;2- is along vein transporting drift;3- adopts quasi- ramp;3- rock drilling ore removal routes;5- drop shafts;6- Exploiting field ramp;7- cutting groove connecting taxiways;8- cuts well;The cementing artificial column of 9- barren rocks;10- blasting holes;11- Caving Systems Stone;12- fillings, ventilation connecting taxiway;13- grouting pipes;14- anchor poles;15- goafs.
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, exploiting field is divided along orebody trend first, each exploiting field utilizes exploiting field ramp 6 Coupled.Each exploiting field divides upper and lower 2 segmentations on vertical height, continuous ore pillar 1 is lingered between segmentation, the width of continuous studding 1 is 10m;In each segmentation stope, Width of stope 20m are arranged along orebody trend.
Quasi- ramp 3 is adopted by along vein transporting drift 2, tunnel 3 × 3m among exploiting field, by adopting quasi- ramp 3, a rock drilling ore removal route 4 is tunneled close to lower wall position in each Bottom of Stope, rock drilling ore removal route 4 runs through entire stope, And in stope end, one slot raise 8 of driving from bottom plate to top plate, and cutting groove 7 is formed for the scope of freedom with slot raise 8.
By adopting quasi- ramp 3, the filling of one 3 × 3m of driving, ventilation connection in the continuous ore pillar 1 between upper and lower segmentation Network road 12 carries out the channel of filling operation for carrying out stope ventilation and scraper.Filling, the gradient of ventilation connecting taxiway 12 In the range of 8%-15%, filling mouth is arranged close to the position of Stope roof for control.
Using the drawing back mode among two flapwise in stope, the Drilling fan shaped medium length hole in rock drilling ore removal route 4 10, and ore caving is carried out for the scope of freedom with cutting groove 7, to improve the production capacity of stope, the ore 11 of avalanche is passed through using scraper Ore removal is carried out by the drop shaft 5 that rock drilling ore removal route 4 is unloaded to a diameter of φ 2m.
When 15 exposed area of goaf after ore removal reaches maximum allowable exposed area, artificial column 9 of progress is constructed. It is poured into goaf 15 via filling, ventilation connecting taxiway 12 using the barren rock of scraper mechanical shovel dress, is gradually piled into trapezoidal give up Clitter, while grouting pipe 13 is laid in hillock in advance, with regard to carrying out slip casting after the size of hillock reaches design requirement Operation so as to form artificial column 9 of trapezoidal barren rock consolidated fill, to support goaf 15, reaches processing goaf 15 Purpose.After artificial column 9 is constructed, continue to close on ore body using medium-length hole ore caving technique back production, treat the sudden and violent of goaf 15 When showing up product close to maximum allowable exposed area, continue to construct artificial column 9, so recycle, continuous so as to fulfill ore body returns It adopts.
The spacing and quantity of artificial column 9 will be come true according to the actual conditions of the form in goaf 15 and country rock stability It is fixed.When goaf 15 roof rock built on the sand when, the mode of suspension roof support can be used, Stope roof install anchor pole 14, use In the stability for improving top plate, increase the maximum allowable exposed area in goaf 15, so as to increase between artificial column 9 Spacing or the quantity for reducing by artificial column, reduce casting resin as far as possible.
After ore body back production, goaf 15 is all supported by the cementing artificial column 9 of barren rock, thus in filling in mine material not When sufficient, reach the stability for ensureing goaf, reduce casting resin volume total amount, reduce the purpose of mining cost.

Claims (4)

1. a kind of slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling, it is characterized in that:Using ramp as quasi- connecting taxiway is adopted, make With drill jumbo and scraper trackless equipment, Drilling fan shaped medium length hole carries out ore caving, and drawing back after back production, utilizes Barren rock consolidated fill mode constructs artificial column, supports goaf by artificial column, it is ensured that the exposed area in goaf is in maximum Allow in the range of exposed area, stope across pitch arrangement, using ramp to adopt quasi- connecting taxiway, and according to slanting angle of ore body variation progress Flexible arrangement;A rock drilling ore removal route is tunneled, and a cutting day is tunneled from stope sill to top plate in each Bottom of Stope Well forms cutting groove by the scope of freedom of slot raise;Using drawing back, the Drilling medium-length hole in rock drilling ore removal route, and Ore caving is carried out by the scope of freedom of cutting groove, the ore of avalanche carries out ore removal using scraper via rock drilling ore removal route;When mined out When area's exposed area reaches maximum allowable exposed area, constructing for artificial column is carried out by the way of barren rock consolidated fill, is used To support goaf;After artificial column is constructed, continue to close on ore body using medium-length hole ore caving technique back production, treat goaf Exposed area close to maximum allowable exposed area when, continue to construct artificial column, so recycle, construct a plurality of artificial column, So as to fulfill the continuous stoping of ore body.
2. the slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling according to claim 1, it is characterized in that:Ore body back production After, goaf is all supported by the cementing artificial column of barren rock;The spacing and quantity of artificial column are according to the country rock in goaf Implementations are consolidated with roof and floor to be adjusted, and when and goaf good in wall rock condition allows exposed area big, increase artificial column Spacing, and suitably reduce by artificial column dimension;Conversely, then reducing by artificial intercolumniation, and increase the size of artificial column.
3. the slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling according to claim 1 or 2, it is characterized in that:Pass through Quasi- ramp is adopted, a filling, ventilation connecting taxiway are tunneled in continuous ore pillar, is filled, the slope control of ventilation connecting taxiway exists In the range of 8%-15%, filling mouth is disposed adjacent to the position of Stope roof.
4. the slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling according to claim 1 or 2, it is characterized in that:In structure When building artificial column, the barren rock of scraper mechanical shovel dress is directly poured into goaf, is piled into trapezoidal hillock, while exist in advance Grouting pipe is laid in hillock, slip casting operation is carried out after the size of hillock reaches design requirement, is ultimately formed trapezoidal Artificial column of barren rock consolidated fill supports goaf top plate.
CN201610840304.8A 2016-09-22 2016-09-22 A kind of slight slope and thin ore body barren rock cementing pillar method of mining by the way of filling Active CN106351692B (en)

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Publication number Priority date Publication date Assignee Title
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
CN108868880A (en) * 2018-06-27 2018-11-23 江西理工大学 Mineral building for level pillar recycling fills structure, level pillar recovery method
CN110671146B (en) * 2019-10-25 2020-12-04 中冶长天国际工程有限责任公司 Method for determining width of cemented filling body

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CN104632220A (en) * 2014-12-09 2015-05-20 中南大学 Mining method with adjustable and controllable structure size of gentle dip medium-thickness ore body strip column reconstructed stope
CN104832178A (en) * 2015-03-23 2015-08-12 中国矿业大学 A layering and partially filling coal mining method of thick seams
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