CN109630116B - Mining method for inclined medium-thickness blind ore body - Google Patents
Mining method for inclined medium-thickness blind ore body Download PDFInfo
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- CN109630116B CN109630116B CN201811366159.XA CN201811366159A CN109630116B CN 109630116 B CN109630116 B CN 109630116B CN 201811366159 A CN201811366159 A CN 201811366159A CN 109630116 B CN109630116 B CN 109630116B
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- 238000005065 mining Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000011435 rock Substances 0.000 claims abstract description 29
- 238000005553 drilling Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 238000005422 blasting Methods 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 230000005641 tunneling Effects 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000009933 burial Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
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Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/04—Transport of mined material in gravity inclines; in staple or inclined shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a mining method of an inclined medium-thickness blind ore body, which treats the whole ore body as an ore block, wherein the height of the ore block is the full height of the ore body, the width of the ore block is the trend length of the ore body, and no ore pillar is left in the ore block. Excavating ore removal cross roadways to the bottom of the ore body from the transportation roadway every 5-10 m, and excavating ore removal trenches at the bottom of the ore body; tunneling a pedestrian rock drilling blind inclined shaft 3-8 m away from the boundary of ore body footwall ore rock, and communicating the pedestrian rock drilling blind inclined shaft with an air return roadway; a track is arranged in the pedestrian rock drilling blind inclined shaft, a winch is arranged in the air return roadway, and the winch controls the rail cage to move up and down in the pedestrian rock drilling blind inclined shaft through a steel wire rope. Workers drill fan-shaped blast holes in a layered mode into a mine body in a rail cage, the fan-shaped blast holes are drilled in a layered mode through layered blasting, and the collapsed ores are conveyed out of a haulage roadway from an ore removal trench through an ore removal cross roadway through a scraper. Has the advantages that: a large amount of mining preparation projects during the mining by a sectional open stope method are replaced, the investment of the mining preparation projects is saved, the process is simple, and the efficiency is high.
Description
Technical Field
The invention belongs to the technical field of underground mining methods, and particularly relates to a mining method of an inclined medium-thickness blind ore body.
Background
Compared with other mining large countries in the world, the occurrence of mineral resources in China has obvious relative shortage of large mineral resources such as copper, iron and the like, and rare mineral resources such as tungsten, antimony and the like with small usage amount are abundant; the large-scale and ultra-large-scale ore deposits are few, and the medium and small-scale ore deposits are many. The current situation of special resource occurrence in China determines that blind small ore bodies which are not clearly specified in a geological map are often found beside main ore bodies in the production of mining enterprises. The inclined medium-thickness ore body is mainly mined by adopting a sectional open stope method, a large number of mining preparation projects are required to be arranged during the mining by the sectional open stope method, the trend of the inclined medium-thickness blind ore body is prolonged to be small, the trend of the inclined medium-thickness blind ore body is prolonged to be short, the mining preparation projects can not be repeatedly utilized, the inclined medium-thickness blind ore body is often used once and is not effective, and the ore body development cost is increased. There is therefore a need to find a mining method suitable for sloping blind, medium-thickness ore bodies.
Disclosure of Invention
The invention aims to provide a mining method for an inclined medium-thickness blind ore body, which aims to reduce mining cost and improve mining efficiency.
The technical scheme of the invention is as follows: the mining method of the inclined medium-thickness blind ore body is suitable for the inclined medium-thickness blind ore body with the strike length of less than 100m, the inclined extension of less than 50m and the stable surrounding rocks of upper and lower plates, and the technical scheme is as follows:
structural parameters A: when such ore body is found, after the trend length, the burial depth, the extension depth, the shape, the inclination angle and the thickness of the ore body are confirmed through prospecting, the whole ore body is regarded as an ore block, the height of the ore block is the full height of the ore body, the width of the ore block is the trend length of the ore body, and no ore pillar is left in the ore block;
b, mining and cutting engineering: firstly, excavating a mine removal cross drift to the bottom of an ore body from a transportation roadway every 5-10 m, and excavating mine removal trenches at the bottom of the ore body; tunneling a pedestrian rock drilling blind inclined shaft 3-8 m away from the boundary of ore body footwall ore rock, and communicating the pedestrian rock drilling blind inclined shaft with an air return roadway; arranging a track in the pedestrian rock drilling blind inclined shaft, arranging a winch in the return airway, and controlling the rail cage to move up and down in the pedestrian rock drilling blind inclined shaft by the winch through a steel wire rope;
c, stoping and ore drawing engineering: workers drill fan-shaped blast holes in a layered mode into a mine body in a rail cage, the fan-shaped blast holes are drilled in a layered mode through layered blasting, and the collapsed ores are conveyed out of a haulage roadway from an ore removal trench through an ore removal cross roadway through a scraper.
In order to further save the explosive amount, reduce the waste rock and mix, and in order to protect the pedestrian rock drilling blind inclined shaft from being damaged, when the fan-shaped blast holes are drilled in a layered mode for charging, only the blast hole sections in the ore body are charged, and the blast hole sections in the surrounding rocks are not charged.
The invention has the beneficial effects that: the method replaces a large amount of mining preparation projects in the process of mining by a sublevel open stope method through the lifting of the cage in the blind inclined shaft for pedestrian rock drilling, saves the investment of the mining preparation projects, and has the advantages of simple process, high efficiency and the like.
Drawings
FIG. 1 is a schematic illustration of the mining method of the present invention;
reference numbers in the figures: 1-haulage roadway, 2-ore removal cross roadway, 3-ore removal trench, 4-pedestrian rock drilling blind inclined shaft, 5-return airway, 6-track, 7-winch, 8-steel wire rope, 9-rail cage, 10-layered chiseling fan-shaped blast hole, and 11-ore caving.
Detailed Description
The deep copper ore of the silver company is a famous large copper deposit, and sporadic blind small ore bodies are often exposed beside a main ore body in the deposit. The main ore body of the deep copper ore adopts a sill pillar-free subsection caving method, and the blind ore body adopts a subsection empty field method. The sublevel open stope method needs to tunnel a large amount of mining preparation projects when mining the blind ore body far away from the mine, and the mining cost is increased. Therefore, the inclined medium-thickness blind ore body mining method is tested in the 9# blind ore body mining of the middle section of 1785m of the western mining area of the ore. The method is explained in detail with reference to the attached drawings:
structural parameters A: aiming at the blind ore body No. 9, the inclination angle of the blind ore body No. 9 is 45 degrees, the thickness of the ore body is 8m, the height of the ore body is 30m, the whole blind ore body No. 9 is regarded as an ore block during mining, the height of the ore block is 30m of the total height of the ore body, the width of the ore block is 80m of the trend length of the ore body, and no ore pillar is left in the ore block.
B, mining and cutting engineering: firstly, excavating the bottom of blind ore bodies from a lateral mine removal roadway 2 to a No. 9 blind ore body every 5m from a 1785m middle-section haulage roadway 1; excavating ore removal trenches 3 at the bottom of the No. 9 blind ore body from the ore removal cross drift 2, wherein the angle of the ore removal trenches is 45 degrees; tunneling a pedestrian rock drilling blind inclined shaft 4 at a position 8m outside the boundary of the lower wall rock of the No. 9 blind ore body, wherein the length of the pedestrian rock drilling blind inclined shaft 4 is 43m, the inclination angle is 45 degrees, and the pedestrian rock drilling blind inclined shaft is communicated with a 1785m subsection air return tunnel 5; a track 6 is arranged on the pedestrian rock drilling blind inclined shaft 4, a winch 7 is arranged on the 1785m subsection air return tunnel 5, and the winch 7 controls the rail cage 9 to move up and down on the pedestrian rock drilling blind inclined shaft 4 through a steel wire rope 8.
C, stoping and ore drawing engineering: a person drills fan-shaped blast holes 10 in layers in a 9# blind mine in a rail cage 9, the hole depth is 16-25 m, the fan-shaped blast holes 10 are drilled in layers through blasting, and collapsed ores 11 are conveyed out of a haulage roadway 1 from an ore removal trench 3 through an ore removal cross drift 2 by a scraper.
In order to further save the material cost, when the sector-shaped blast holes 10 are drilled in layers for charging, only the blast hole sections in the 9# blind ore body are charged, and the blast hole sections in the surrounding rocks are not charged, so that the blasting effect is ensured, and the explosive consumption is saved.
Claims (2)
1. The mining method of the inclined medium-thickness blind ore body is suitable for the inclined medium-thickness blind ore body with the strike length of less than 100m, the inclined extension of less than 50m and the stable surrounding rocks of upper and lower plates, and the technical scheme is as follows:
structural parameters A: when such ore body is found, after the trend length, the burial depth, the extension depth, the shape, the inclination angle and the thickness of the ore body are confirmed through prospecting, the whole ore body is regarded as an ore block, the height of the ore block is the full height of the ore body, the width of the ore block is the trend length of the ore body, and no ore pillar is left in the ore block;
b, mining and cutting engineering: firstly, excavating ore removal cross roadways (2) to the bottom of an ore body from a transportation roadway (1) at intervals of 5-10 m, and excavating ore removal trenches (3) at the bottom of the ore body; tunneling a pedestrian rock drilling blind inclined shaft (4) at a position 3-8 m away from the boundary of ore body footwall ore rocks, wherein the pedestrian rock drilling blind inclined shaft (4) is communicated with an air return tunnel (5); a track (6) is arranged in the pedestrian rock drilling blind inclined shaft (4), a winch (7) is arranged in the return airway (5), and the winch (7) controls the rail cage (9) to move up and down in the pedestrian rock drilling blind inclined shaft (4) through a steel wire rope (8);
c, stoping and ore drawing engineering: workers drill fan-shaped blast holes (10) in a layered mode into a mine body in a rail cage (9), the fan-shaped blast holes (10) are drilled in a layered mode through layered blasting, and collapsed ores (11) are conveyed out of a haulage roadway (1) from an ore removal trench (3) through an ore removal cross drift (2) through a scraper.
2. The mining method of the inclined medium-thickness blind ore body according to claim 1, wherein the mining method comprises the following steps: when the layered drilling fan-shaped blast holes (10) are charged, only the blast hole sections in the ore body are charged, and the blast hole sections in the surrounding rocks are not charged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811366159.XA CN109630116B (en) | 2018-11-16 | 2018-11-16 | Mining method for inclined medium-thickness blind ore body |
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| CN201811366159.XA CN109630116B (en) | 2018-11-16 | 2018-11-16 | Mining method for inclined medium-thickness blind ore body |
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| CN109630116A CN109630116A (en) | 2019-04-16 |
| CN109630116B true CN109630116B (en) | 2020-08-25 |
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| CN110966005A (en) * | 2019-11-22 | 2020-04-07 | 西北矿冶研究院 | Novel medium-length hole ore-breaking stage chamber method |
| CN114215526A (en) * | 2021-12-20 | 2022-03-22 | 福州大学 | Electrically-driven movable mining raise tunneling working platform and construction method thereof |
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| CN202245649U (en) * | 2011-09-30 | 2012-05-30 | 铜陵化工集团新桥矿业有限公司 | Ore removal transporting device for mine blind inclined well |
| CN103171961B (en) * | 2013-03-21 | 2015-02-11 | 东南电梯股份有限公司 | Inclined drift personnel long-distance transportation system |
| CN103287458A (en) * | 2013-05-22 | 2013-09-11 | 广西高峰矿业有限责任公司 | Semiautomatic bridge-type anti-sliding device |
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