CN103557001A - Low-section-height drift-pillar-free shrinkage-stoping, subsequent-filling and mining method - Google Patents

Low-section-height drift-pillar-free shrinkage-stoping, subsequent-filling and mining method Download PDF

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Publication number
CN103557001A
CN103557001A CN201310588018.3A CN201310588018A CN103557001A CN 103557001 A CN103557001 A CN 103557001A CN 201310588018 A CN201310588018 A CN 201310588018A CN 103557001 A CN103557001 A CN 103557001A
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ore
filling
mining
low
production
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CN201310588018.3A
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CN103557001B (en
Inventor
刘艳章
张群
张丙涛
叶义成
柯丽华
王其飞
邓磊
赵卫
石志军
刘洋
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Wuhan University of Science and Engineering WUSE
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Wuhan University of Science and Engineering WUSE
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Abstract

The invention relates to a low-section-height drift-pillar-free shrinkage-stoping, subsequent-filling and mining method. According to a technical scheme, a transverse-drift roadway (7) is tunneled in a stage main haulage roadway (14) arranged at each stage to access a chamber to be stoped. A cross gateway (2) is arranged in a stud (6), and a ventilation way shaft (1) is communicated with the chamber by the cross gateway (2). Bottom-pulling height formed by cutting is 2 m-2.5 m and the width is equal to the thickness of an ore body. Stoping in the chamber is carried out from bottom to top, and layering height is 2m-3m. Length of a bench working surface is 2m-4m, height is 1.5m-2m, blast holes (10) are horizontally formed, and arranged in a triangular manner, and space between the adjacent blast holes (10) is 0.8m-1m; 30%-40% volume of ores are discharged after blasting and ore dropping each time, and all ores are discharged after stoping of the chamber is completed. An air return roadway built at the bottom of a mined-out area is distributed along the vein direction, and then the mined-out area is filled. The method has the advantages of being high in stope stability, high in ore recovery rate and high in mechanical degree.

Description

A kind of low section high without foundation shrink afterwards filling mining method
Technical field
The invention belongs to underground mining field, mineral deposit, be specifically related to a kind of low section high without foundation shrink afterwards filling mining method.
Background technology
The squat that often has the fragmentary cryptomere of minority, nido in underground mining from mother-lode away from, from technique and economic angle, traditional mining methods are not suitable for exploiting this part ore, in order to consider overall efficiency, a lot of mines have all abandoned these ores, cause the significant wastage of resource.In addition, in the exploitation of exploitation delineation in the open boundary process, due to storage of mineral deposits complicated condition, orebody shape changes greatly, often causes a part of ore body not in exploitation boundary, and this part ore remains in open-air pit limit and helps, and is and hangs side ore deposit.According to data, after China's opencast mining finishes, the extension side ore deposit ore amount that remains in open-air pit limit side accounts for 10% left and right of total exploitated ore amount to root.China is the country of a shortage of mineral resources, is again that mineral resources consume big country simultaneously, and therefore, the underground fragmentary squat of back production and extension side ore deposit have great importance.
The at present many abandoneds of fragmentary squat away from from mother-lode, and the exploitation method of hanging side ore deposit mainly contains:
Directly adopt Caving Method with Large Space exploitation, this method is applicable to have an opencast mining of the mine that end or strip mining transformation and underground mining are staggered.Owing to having an opencast mining of end or strip mining transformation and underground mining, stagger, the problems such as the caused surface subsidence of underground mining, open-air pit expansion are little on earth's surface impact, therefore can directly adopt Caving Method with Large Space exploitation.
Adopt traditional open-stope method and the cut and fill of pre-pillar: this method is applicable to the mine of having an opencast mining of and underground mining carries out simultaneously.Pre-pillar can be born certain ground and press, to guarantee that earth's surface strip mining transformation is not subject to the impact of underground mining.
While directly adopting Caving Method with Large Space exploitation to hang side ore deposit, easily cause the problems such as goaf country rock inbreak, balkstone collapse, surface subsidence, openpit expansion; While adopting the open-stope mining of pre-pillar to hang side ore deposit, because exploiting field rock open-assembly time is long, exposed area is large, and surrounding rock stability is declined, affect exploiting field and table safety.Meanwhile, the ore body scale in Bang Guabang ore deposit, open-air pit limit is conventionally less, and the loss of open-stope method production ore and dilution are larger, is unfavorable for hanging on a small scale side ore deposit exploitation engineering; While adopting the cut and fill of pre-pillar to hang side ore deposit, filling method complex process, cost are high, are not suitable for the extension side ore deposit that exploitated ore amount is less.
Summary of the invention
The present invention is intended to make up existing fragmentary ore body and hangs the deficiency in side ore deposit production technique, and object be to provide that a kind of STOPE STABILITY is good, ore recovery ratio is high and mechanization degree is high low section high is without foundation shrink afterwards filling mining method.
For achieving the above object, the technical solution used in the present invention is:
1) adopt standard and cutting
After development engineering completes, at each stage arrangement stage main haulage roadway, from stage main haulage roadway, tunnel Chuan Mai tunnel, the sensible mineral building for the treatment of back production; In studding, be vertically provided with connecting taxiway, connecting taxiway be spaced apart 3 ~ 4m, ventilation way shaft is communicated with mineral building by connecting taxiway; In adopting accurate complete mineral building, cut, undercuting that cutting forms is highly 2 ~ 2.5m, and the width that undercuts that cutting forms is the thickness of ore body.
2) back production and filling
Actual mining in mineral building carries out from lower to upper, and layer height is 2 ~ 3m, selects back production or pre-pillar in exploitation process.Bench face length is 2 ~ 4m, is highly 1.5 ~ 2m, and big gun hole is that the spacing in ,Bao hole, horizontal big gun hole is 0.8 ~ 1m, and big gun hole adopts rounded projections arranged, every separate explosion to fall and emits the ore of 30 ~ 40% volumes behind ore deposit.Working to the rise again, treats that mineral building back production is complete, and all ores are all emitted, and forms goaf.In bottom, described goaf, build a return aircourse, return aircourse is arranged along mineral ore direction, then filling is carried out in described goaf.
In technique scheme: described level interval is 10 ~ 15m; Described connecting taxiway cross dimensions is 2m * 2m; The thickness of described studding is 3 ~ 4m; Described filling is to adopt high strength casting resin to carry out filling, adopts hydraulic pump to carry out mortar and adds crimping top, and filling uses pipe arrangement in return aircourse.
Owing to adopting technique scheme, the present invention compared with prior art has following good effect:
The present invention first will stone explosion be dug up mine, then explosion is fallen to 60 ~ 70% of ore volume is deposited in mineral building and forms ore storage, helps country rock, and as the working platform that continues working to the rise, strengthened the stability of stope in order to temporary transient support two; Treat that whole mineral building back production is complete, adopt scraper that ore is transported to drop shaft, mechanization degree is high.
The present invention adopts low substoping, has reduced because studding supports the distortion that top overlying strata produce, the safety that has improved underground mining stope.
The present invention adopts high strength casting resin to be transported to goaf through filling pipeline and filling well, and high strength casting resin forms obturation in goaf, controls in time country rock avalanche and surface subsidence, makes the safety of actual mining and is conveniently protected.
The present invention only stays a small amount of ore pillar, can reclaim as much as possible ore, and ore recovery ratio is high.
Therefore; the present invention can improve nugget production capacity when guaranteeing stope job safety and protection earth's surface open work safety; have the advantages that STOPE STABILITY is good, ore recovery ratio is high and mechanization degree is high, the present invention be mainly used in recovery of subterranean from mother-lode the fragmentary ore body away from and outdoor extension side ore deposit.
Accompanying drawing explanation
Fig. 1 is that the present invention is for the schematic diagram of a certain fragmentary ore body;
Fig. 2 be in Fig. 1 A-A to generalized section;
Fig. 3 be in Fig. 1 B-B to generalized section;
Fig. 4 be in Fig. 1 C-C to generalized section;
Fig. 5 is that the present invention helps the schematic diagram of ore deposit ore body for a certain extension;
Fig. 6 be in Fig. 5 A-A to generalized section;
Fig. 7 be in Fig. 5 B-B to generalized section.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further, not limiting the scope of the present invention.
embodiment 1
A kind of low section high without foundation shrink afterwards filling mining method.Described in the present embodiment, method is:
1) adopt standard and cutting
The present embodiment is the exploitation of a certain fragmentary ore body, after development engineering completes, by described fragmentary ore body division, is the stage, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, at each stage arrangement stage main haulage roadway 14, from stage main haulage roadway 14, tunnel Chuan Mai tunnel 7, the sensible mineral building for the treatment of back production; In studding 6, be vertically provided with connecting taxiway 2, connecting taxiway 2 be spaced apart 3.0 ~ 3.5m, ventilation way shaft 1 is communicated with mineral building by connecting taxiway 2; In adopting accurate complete mineral building, cut, undercuting that cutting forms is highly 2 ~ 2.5m, and the width that undercuts that cutting forms is the thickness of ore body.
2) back production and filling
Actual mining in mineral building carries out from lower to upper, and as shown in Figure 1, layer height is 2.0 ~ 2.5m, selects back production or pre-pillar 4 in exploitation process.Bench face length is 2.0 ~ 3.0m, is highly 1.5 ~ 2m, and the spacing that big gun hole 10 is ,Bao hole, horizontal big gun hole 10 is 0.8 ~ 1m, and big gun hole 10 adopts rounded projections arranged, and every separate explosion falls and emits the ore of 30 ~ 35% volumes behind ore deposit.Working to the rise again, treats that mineral building back production is complete, and all ores are all emitted, and forms goaf.In bottom, described goaf, build a return aircourse 8, return aircourse 8 is arranged along mineral ore direction, then filling is carried out in described goaf.
In the technique scheme of the present embodiment: described level interval is 10 ~ 13m; Described connecting taxiway 2 cross dimensionss are 2m * 2m; The thickness of described studding 6 is 3.0 ~ 3.5m; Described filling is to adopt high strength casting resin to carry out filling, adopts hydraulic pump to carry out mortar and adds crimping top, and filling uses pipe arrangement in return aircourse 8.
embodiment 2
A kind of low section high without foundation shrink afterwards filling mining method.Described in the present embodiment, method is:
1) adopt standard and cutting
The present embodiment is the exploitation that a certain extension is helped ore body, and after development engineering completes, it is the stage that described extension is helped to ore deposit ore body division, as shown in Fig. 5, Fig. 6 and Fig. 7, at each stage arrangement stage main haulage roadway 14, from stage main haulage roadway 14, tunnel Chuan Mai tunnel 7, the sensible mineral building for the treatment of back production; In studding 6, be vertically provided with connecting taxiway 2, connecting taxiway 2 be spaced apart 3.5 ~ 4.0m, ventilation way shaft 1 is communicated with mineral building by connecting taxiway 2; In adopting accurate complete mineral building, cut, undercuting that cutting forms is highly 2 ~ 2.5m, and the width that undercuts that cutting forms is the thickness of ore body.
2) back production and filling
Actual mining in mineral building carries out from lower to upper, and as shown in Figure 5, layer height is 2.5 ~ 3.0m, selects back production or pre-pillar 4 in exploitation process.Bench face length is 3.0 ~ 4.0m, is highly 1.5 ~ 2m, and the spacing that big gun hole 10 is ,Bao hole, horizontal big gun hole 10 is 0.8 ~ 1m, and big gun hole 10 adopts rounded projections arranged, and every separate explosion falls and emits the ore of 35% ~ 40% volume behind ore deposit.Working to the rise again, treats that mineral building back production is complete, and all ores are all emitted, and forms goaf.In bottom, described goaf, build a return aircourse 8, return aircourse 8 is arranged along mineral ore direction, then filling is carried out in described goaf.
In the technique scheme of the present embodiment: described level interval is 12 ~ 15m; Described connecting taxiway 2 cross dimensionss are 2m * 2m; The thickness of described studding 6 is 3.5 ~ 4.0m; Described filling is to adopt high strength casting resin to carry out filling, adopts hydraulic pump to carry out mortar and adds crimping top, and filling uses pipe arrangement in return aircourse 8.
This specific embodiment compared with prior art has following good effect:
This specific embodiment first will stone 9 explosions be dug up mine, then explosion is fallen to 60 ~ 70% of ore volume are deposited in mineral building and form ore storage 12, help country rock, and as the working platform 11 that continues working to the rise, strengthened the stability of stope in order to temporary transient support two; Treat that whole mineral building back production is complete, adopt scraper that ore is transported to drop shaft 13, mechanization degree is high.
This specific embodiment adopts low substoping, has reduced because studding supports the distortion that top overlying strata produce, the safety that has improved underground mining stope.
This specific embodiment adopts high strength casting resin to be transported to goaf through filling pipeline and filling well 3, and high strength casting resin forms obturation 5 in goaf, control in time country rock avalanche and surface subsidence, makes the safety of actual mining and is conveniently protected.
This specific embodiment is only stayed a small amount of ore pillar, can reclaim as much as possible ore, and ore recovery ratio is high.
Therefore; this specific embodiment can improve nugget production capacity when guaranteeing stope job safety and protection earth's surface open work safety; have the advantages that STOPE STABILITY is good, ore recovery ratio is high and mechanization degree is high, this specific embodiment be mainly used in recovery of subterranean from mother-lode the fragmentary ore body away from and outdoor extension side ore deposit.

Claims (5)

1. low section high without a foundation shrink afterwards filling mining method, it is characterized in that the method is:
1) adopt standard and cutting
After development engineering completes, at each stage arrangement stage main haulage roadway (14), driving Chuan Mai tunnel (7) from stage main haulage roadway (14), the sensible mineral building for the treatment of back production; In studding (6), be vertically provided with connecting taxiway (2), connecting taxiway (2) be spaced apart 3 ~ 4m, ventilation way shaft (1) is communicated with mineral building by connecting taxiway (2); In adopting accurate complete mineral building, cut, undercuting that cutting forms is highly 2 ~ 2.5m, and the width that undercuts that cutting forms is the thickness of ore body;
2) back production and filling
Actual mining in mineral building carries out from lower to upper, and layer height is 2 ~ 3m, selects back production or pre-pillar (4) in exploitation process; Bench face length is 2 ~ 4m, is highly 1.5 ~ 2m, big gun hole (10) for the spacing in ,Bao hole, horizontal big gun hole (10) be 0.8 ~ 1m, big gun hole (10) adopt rounded projections arranged, every separate explosion falls and emits the ore of 30 ~ 40% volumes behind ore deposit; Working to the rise again, treats that mineral building back production is complete, and all ores are all emitted, and forms goaf; In bottom, described goaf, build a return aircourse (8), return aircourse (8) are arranged along mineral ore direction, then filling are carried out in described goaf.
According to claim 1 low section high without foundation shrink afterwards filling mining method, it is characterized in that described level interval is 10 ~ 15m.
According to claim 1 low section high without foundation shrink afterwards filling mining method, it is characterized in that described connecting taxiway (2) cross dimensions is 2m * 2m.
According to claim 1 low section high without foundation shrink afterwards filling mining method, the thickness that it is characterized in that described studding (6) is 3 ~ 4m.
According to claim 1 low section high without foundation shrink afterwards filling mining method, it is characterized in that described filling is to adopt high strength casting resin to carry out filling, adopt hydraulic pump to carry out mortar and add crimping top, filling uses pipe arrangement in return aircourse (8).
CN201310588018.3A 2013-11-21 2013-11-21 A kind of low section high oper cylinler shrink afterwards filling mining method Expired - Fee Related CN103557001B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104453904A (en) * 2014-11-24 2015-03-25 西北矿冶研究院 Kerve-free sublevel filling mining method
CN105673012A (en) * 2016-01-02 2016-06-15 武汉科技大学 Mining-filling combined continuous mining sublevel room mining method
CN105736009A (en) * 2016-02-04 2016-07-06 武汉科技大学 Shrinkage heap leaching subsequent filling mining method used for steeply-inclined thin orebody
CN109026006A (en) * 2018-09-20 2018-12-18 内蒙古煤矿设计研究院有限责任公司 Exploitation open pit slope covers the new method of mineral products

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Publication number Priority date Publication date Assignee Title
US3712677A (en) * 1971-03-10 1973-01-23 Atlantic Richfield Co Mining method
CN101864957A (en) * 2010-05-25 2010-10-20 广西大学 Great ore drawing simultaneous filling non-top column shrinkage mining method
CN102587916A (en) * 2012-02-01 2012-07-18 金建工程设计有限公司 Method for filling and mining after ore caving
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
CN103184870A (en) * 2013-03-05 2013-07-03 安徽金日盛矿业有限责任公司 Open backfilling mining method during borehole drilling period

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712677A (en) * 1971-03-10 1973-01-23 Atlantic Richfield Co Mining method
CN101864957A (en) * 2010-05-25 2010-10-20 广西大学 Great ore drawing simultaneous filling non-top column shrinkage mining method
CN102587916A (en) * 2012-02-01 2012-07-18 金建工程设计有限公司 Method for filling and mining after ore caving
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
CN103184870A (en) * 2013-03-05 2013-07-03 安徽金日盛矿业有限责任公司 Open backfilling mining method during borehole drilling period

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104453904A (en) * 2014-11-24 2015-03-25 西北矿冶研究院 Kerve-free sublevel filling mining method
CN104453904B (en) * 2014-11-24 2017-01-11 西北矿冶研究院 Kerve-free sublevel filling mining method
CN105673012A (en) * 2016-01-02 2016-06-15 武汉科技大学 Mining-filling combined continuous mining sublevel room mining method
CN105673012B (en) * 2016-01-02 2018-08-21 武汉科技大学 It is a kind of to adopt the block stoping filled in conjunction with continuously exploiting
CN105736009A (en) * 2016-02-04 2016-07-06 武汉科技大学 Shrinkage heap leaching subsequent filling mining method used for steeply-inclined thin orebody
CN105736009B (en) * 2016-02-04 2017-12-15 武汉科技大学 Shrink dump leaching afterwards filling mining methods for Steeply dipping narrow deposits
CN109026006A (en) * 2018-09-20 2018-12-18 内蒙古煤矿设计研究院有限责任公司 Exploitation open pit slope covers the new method of mineral products
CN109026006B (en) * 2018-09-20 2020-07-24 内蒙古煤矿设计研究院有限责任公司 Novel method for mining open-pit mine slope covered mineral products

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