CN111677508B - Inclined thick and large ore body large-diameter deep hole stoping bottom-leveling mining alignment system - Google Patents
Inclined thick and large ore body large-diameter deep hole stoping bottom-leveling mining alignment system Download PDFInfo
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- CN111677508B CN111677508B CN202010498127.6A CN202010498127A CN111677508B CN 111677508 B CN111677508 B CN 111677508B CN 202010498127 A CN202010498127 A CN 202010498127A CN 111677508 B CN111677508 B CN 111677508B
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- 238000005065 mining Methods 0.000 title claims abstract description 20
- 239000011435 rock Substances 0.000 claims abstract description 76
- 238000005553 drilling Methods 0.000 claims abstract description 61
- 238000005520 cutting process Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 10
- 238000005422 blasting Methods 0.000 claims description 8
- 230000009194 climbing Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 239000002360 explosive Substances 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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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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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- 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
- E21F13/06—Transport of mined material at or adjacent to the working face
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Abstract
The invention discloses a large-diameter deep hole stoping flat bottom stoping accurate system for an inclined thick ore body, which is characterized in that the ore body is divided into panels along the direction, panel space columns are reserved among the panels, stopes in the panels are divided into a one-step stope and a two-step stope to carry out stoping in two steps, and the panel space columns are sequentially numbered and divided into odd-numbered panel space columns and even-numbered panel space columns; arranging a segmented transportation lane, a mine removal lane and a transportation connection lane on the ore body footwall; and constructing sectional rock drilling tunnels in panel intervals and forming a stope top rock drilling chamber. The mining preparation projects of the panel stope and the panel interval column mining are cooperatively considered and mutually utilized, and the invention has the advantages of less project amount, high project utilization rate and the like.
Description
Technical Field
The invention belongs to the field of underground mining, and particularly relates to a large-diameter deep hole stoping flat bottom mining preparation system for an inclined thick ore body.
Background
The large-diameter deep hole mining method is a mining method with simple mining-stopping cutting engineering arrangement, small mining-stopping cutting engineering quantity, large stope production capacity and high efficiency, and is the most commonly used two-step stage large-diameter deep hole open stope subsequent filling method at present. During stope stoping, a down-the-hole drill is adopted to drill a downward large-diameter deep hole in the construction of a chamber at the upper part of the middle section, a cutting raise is firstly used as a free surface to blast to form a cutting groove, blasting ore caving operation is then carried out, ore caving is blasted by adopting a traditional VCR method or a sectional or stage lateral ore caving mode, the ore caving is concentrated in an ore discharging structure at the bottom of the middle section to shovel out, a goaf is filled after ore discharging is finished, high-strength cemented filling bodies are adopted to fill after the stope in one step is finished, and low-strength filling bodies are adopted to fill after the ore pillars in the second step are finished.
At present, a large-diameter deep hole mining method is mainly applied to ore body stoping of a steeply inclined thick and large ore body and a slowly inclined extremely thick and large ore body, the application in the inclined thick and large ore body is less, the reason is that the ore body stoping method is limited by the inclination angle and the thickness of the ore body, and the economic and reasonable stoping project arrangement difficulty is higher. Therefore, the invention provides a large-diameter deep hole stoping bottom-leveling stoping preparation system for an inclined thick ore body, and aims to solve the problem of economically and reasonably arranging stoping preparation engineering during large-diameter deep hole mining of the inclined thick ore body.
Disclosure of Invention
In order to solve the technical problem, the invention provides a large-diameter deep hole stoping and bottom mining leveling system for an inclined thick ore body, which is characterized in that:
(1) dividing an ore body into panels along the moving direction, reserving panel space columns between the panels, mining the panels firstly, then mining the panel space columns, dividing the panels into stopes arranged along the moving direction, dividing the stopes into a one-step stope and a two-step stope, and carrying out stoping in two steps, wherein the panel space columns are sequentially numbered and divided into odd-numbered panel space columns and even-numbered panel space columns;
(2) arranging segmented transportation roadways in the lower wall surrounding rocks, arranging ore removal roadways at the bottom of each stope, and communicating the ore removal roadways with the segmented transportation roadways by adopting transportation communication roads, wherein the transportation communication roads corresponding to the ore removal roadways at the bottom of the stope in the first step are arranged in the lower wall surrounding rocks corresponding to the odd-numbered panel intervals, and the transportation communication roads corresponding to the ore removal roadways at the bottom of the stope in the second step are arranged in the lower wall surrounding rocks corresponding to the even-numbered panel intervals;
(3) constructing a segmented rock drilling roadway in odd-numbered panel pillars, wherein one end of the segmented rock drilling roadway is communicated with an ore removal roadway at the bottom of a certain stope at the upper part, the other end of the segmented rock drilling roadway is constructed to the junction of upper wall rock and upper wall rock of a stope in one step, excavating a rock drilling chamber at the top of the stope in one step towards two sides to form an operation space for large-diameter deep-hole rock drilling and charging blasting of the stope in one step, and arranging a cutting drift and a cutting raise on one side, close to even-numbered panel pillars, of the stope in one step;
(4) and constructing inclined sectional rock drilling tunnels in the even-numbered panel pillars, wherein one end of each sectional rock drilling tunnel is communicated with an ore removal tunnel at the bottom of a certain stope at the upper part, the other end of each sectional rock drilling tunnel is constructed to the junction of the upper wall rock and the upper wall rock of the two-step stope, rock drilling chambers are dug at the top of the two-step stope towards two sides to form an operation space for large-diameter deep-hole rock drilling and explosive blasting of the two-step stope, and a cutting drift and a cutting raise are arranged on one side, close to the odd-numbered panel pillars, of the two-step stope.
Further, the stope bottom ore removal roadway communicated with the segmented rock drilling roadway is comprehensively determined according to the inclination angle of the ore body and the stope span, and the length of the segmented rock drilling roadway is preferably shortened on the premise that the segmented rock drilling roadway is arranged in a downhill mode and the gradient of the segmented rock drilling roadway is smaller than or equal to the maximum climbing capacity of the rock drilling equipment and the ore removal equipment; the gradient of the transportation connecting channel is less than or equal to the maximum climbing capacity of the rock drilling equipment and the ore removal equipment.
Furthermore, the ore removal roadway of the stope in the one step is arranged in a flat slope in the corresponding range of the panel interval columns, and is arranged in a downhill slope from odd-numbered panel interval columns to even-numbered panel interval columns in the corresponding range of the stope, wherein the slope is 2-3 degrees; the ore removal roadway of the stope in the two steps is arranged in a flat slope in the corresponding range of the panel interval columns, and is arranged in a downhill slope from the even number panel interval columns to the odd number panel interval columns in the corresponding range of the stope, and the slope is 2-3 degrees.
Preferably, the specification of the section of the ore removal roadway is larger than the sections of all other roadways, the shape of the section of the ore removal roadway is a three-center arch, the specification of the section is 4.8m × 4.6m, the shapes of the sections of the segmented transportation roadway, the segmented rock drilling roadway, the transportation connecting road and the cutting roadway are three-center arches, the specification of the section is 4.0m × 3.8m, and the section of the cutting raise is 2.0m × 2.0 m.
Further, strip-shaped ore pillars are reserved in the construction process of the drilling chamber to control the exposed area of a top plate rock mass, and the top plate of the drilling chamber is supported in a combined supporting mode of anchor cables, anchor rods, reinforcing mesh hanging and guniting; preferably, the length of the anchor cable is 12-15m, and the mesh degree of the anchor cable support is 3.0m multiplied by 3.0m-4.5m multiplied by 4.5 m; the anchor rod is a resin anchor rod, the length of the anchor rod is 2.0-2.5m, and the support mesh degree of the anchor rod is 1.0m multiplied by 1.0m-1.5m multiplied by 1.5 m; the reinforcing mesh is made of reinforcing steel bars with the diameter of 8-12mm, and the mesh size is 100mm multiplied by 100 mm.
Advantageous effects
Compared with the prior art and the method, the large-diameter deep hole stoping and bottom mining leveling system for the inclined thick and large ore body has the following beneficial effects: the stoping and cutting engineering quantity is small, the stope preparation time is short, the production is fast, the stope is stoped in a stage deep hole blasting mode, only a bottom ore removal structure and a top drilling chamber need to be formed, the stoping and cutting engineering quantity is small compared with other sublevel mining methods, the stope preparation time is short, and the production can be read quickly; meanwhile, the stope of the panel area and the stope stoping engineering of the panel area are mutually utilized and cooperatively considered, so that the engineering utilization rate is high.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of the panel arrangement of the present invention;
FIG. 2 is a front view (A-A) of a stope preparation project layout according to one step of the present invention;
FIG. 3 is a plan view of a stope preparation project layout in one step of the present invention (B-B);
FIG. 4 is a two-step stope preparation project layout elevation view (A-A) of the present invention;
FIG. 5 is a plan view (C-C) of a two-step stope preparation project layout of the present invention.
In the figure: 1-sectional transportation lane; 2-transportation communication channel; 3-ore removal lane; 4-sectional rock drilling roadway; 5-a rock drilling chamber; 6-high strength cemented filling body.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
As shown in fig. 1-5, a large-diameter deep-hole stoping horizontal bottom mining preparation system for inclined thick and large ore bodies comprises the following steps:
(1) dividing an ore body into panels along the moving direction, reserving panel space columns between the panels, mining the panels firstly, then mining the panel space columns, dividing the panels into stopes arranged along the moving direction, dividing the stopes into a one-step stope and a two-step stope, and carrying out stoping in two steps, wherein the panel space columns are numbered in sequence and are divided into odd-numbered panel space columns and even-numbered panel space columns;
(2) arranging segmented transport lanes 1 in the lower wall surrounding rocks, arranging ore removal lanes 3 at the bottom of each stope, and communicating the ore removal lanes 3 with the segmented transport lanes 1 by adopting transport communication lanes 2, wherein the transport communication lanes 2 corresponding to the ore removal lanes 3 at the bottom of the stope in the first step are arranged in the lower wall surrounding rocks corresponding to the odd-numbered panel intervals, and the transport communication lanes 2 corresponding to the ore removal lanes 3 at the bottom of the stope in the second step are arranged in the lower wall surrounding rocks corresponding to the even-numbered panel intervals;
(3) constructing 4 sectional rock drilling tunnels in odd-numbered panel pillars, wherein one end of each 4 sectional rock drilling tunnel is communicated with an ore removal tunnel 3 at the bottom of a certain stope at the upper part, the other end of each 4 sectional rock drilling tunnel is constructed to the junction of the upper wall rocks of the stope in one step, and a rock drilling chamber 5 is excavated at the top of the stope in one step towards two sides to form an operation space for large-diameter deep-hole rock drilling and explosive blasting of the stope in one step, and a cutting drift and a cutting raise are arranged on one side, close to even-numbered panel pillars, of the stope in one step;
(4) constructing 4 inclined sectional rock drilling tunnels in the pillars between the even numbered panels, communicating one end of each 4 sectional rock drilling tunnels with an ore removal tunnel 3 at the bottom of a certain stope at the upper part, constructing the other end to the junction of the upper wall rocks of the stope in the second step, excavating a rock drilling chamber 5 at the top of the stope in the second step towards two sides to form an operation space for large-diameter deep-hole rock drilling and explosive blasting of the stope in the second step, and arranging a cutting drift and a cutting patio at one side of the stope in the second step, which is close to the pillars between the odd numbered panels.
The ore removal roadway 3 of the stope in the one step is arranged in a flat slope in the corresponding range of the panel interval columns, and is arranged in a downhill slope from odd-numbered panel interval columns to even-numbered panel interval columns in the corresponding range of the stope, and the slope is 2-3 degrees; the ore removal roadway 3 of the stope in the two steps is arranged in a flat slope in the corresponding range of the panel interval columns, and is arranged in a downhill slope from the even number panel interval columns to the odd number panel interval columns in the corresponding range of the stope, and the slope is 2-3 degrees. The bottom ore removal roadway 3 of a certain stope at the upper part communicated with the segmented rock drilling roadway 4 is comprehensively determined according to the inclination angle of an ore body and the span of the stope, and the length of the segmented rock drilling roadway 4 is preferably shortened on the premise that the segmented rock drilling roadway 4 is arranged in a downhill mode and the gradient of the segmented rock drilling roadway is smaller than or equal to the maximum climbing capacity of rock drilling equipment and ore removal equipment; the gradient of the transportation connecting channel 2 is less than or equal to the maximum climbing capacity of the rock drilling equipment and the ore removal equipment. The section specification of the ore removal lane 3 is larger than the sections of all other lanes, the section shape of the ore removal lane 3 is a three-center arch, the section specification is 4.8m multiplied by 4.6m, the section shapes of the segmented transport lane 1, the segmented rock drilling lane 4, the transport connecting lane 2 and the cutting level are three-center arches, the section specification is 4.0m multiplied by 3.8m, and the section of the cutting raise is 2.0m multiplied by 2.0 m.
Reserving strip-shaped ore pillars in the construction process of the drilling chamber 5 to control the exposed area of a top plate rock mass, and supporting the top plate of the drilling chamber 5 by adopting a combined supporting mode of anchor cables, anchor rods, hanging reinforcing mesh and spraying; the length of the anchor cable is 12-15m, and the support mesh of the anchor cable is 3.0m multiplied by 3.0m-4.5m multiplied by 4.5 m; the anchor rod is a resin anchor rod, the length of the anchor rod is 2.0-2.5m, and the support mesh degree of the anchor rod is 1.0m multiplied by 1.0m-1.5m multiplied by 1.5 m; the reinforcing mesh is made of reinforcing steel bars with the diameter of 8-12mm, and the mesh size is 100mm multiplied by 100 mm.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides a thick ore body major diameter deep hole stoping flat bottom of slope adopts accurate system which characterized in that:
(1) dividing an ore body into panels along the moving direction, reserving panel space columns between the panels, mining the panels firstly, then mining the panel space columns, dividing the panels into stopes arranged along the moving direction, dividing the stopes into a one-step stope and a two-step stope, and carrying out stoping in two steps, wherein the panel space columns are sequentially numbered and divided into odd-numbered panel space columns and even-numbered panel space columns;
(2) arranging segmented transportation roadways in the lower wall surrounding rocks, arranging ore removal roadways at the bottom of each stope, and communicating the ore removal roadways with the segmented transportation roadways by adopting transportation communication roads, wherein the transportation communication roads corresponding to the ore removal roadways at the bottom of the stope in the first step are arranged in the lower wall surrounding rocks corresponding to the odd-numbered panel intervals, and the transportation communication roads corresponding to the ore removal roadways at the bottom of the stope in the second step are arranged in the lower wall surrounding rocks corresponding to the even-numbered panel intervals;
(3) constructing a segmented rock drilling roadway in odd-numbered panel pillars, wherein one end of the segmented rock drilling roadway is communicated with an ore removal roadway at the bottom of a certain stope at the upper part, the other end of the segmented rock drilling roadway is constructed to the junction of upper wall rock and upper wall rock of a stope in one step, excavating a rock drilling chamber at the top of the stope in one step towards two sides to form an operation space for large-diameter deep-hole rock drilling and charging blasting of the stope in one step, and arranging a cutting drift and a cutting raise on one side, close to even-numbered panel pillars, of the stope in one step;
(4) and constructing inclined sectional rock drilling tunnels in the even-numbered panel pillars, wherein one end of each sectional rock drilling tunnel is communicated with an ore removal tunnel at the bottom of a certain stope at the upper part, the other end of each sectional rock drilling tunnel is constructed to the junction of the upper wall rock and the upper wall rock of the two-step stope, rock drilling chambers are dug at the top of the two-step stope towards two sides to form an operation space for large-diameter deep-hole rock drilling and explosive blasting of the two-step stope, and a cutting drift and a cutting raise are arranged on one side, close to the odd-numbered panel pillars, of the two-step stope.
2. The large-diameter deep hole stoping and bottom stoping leveling system for the inclined thick and large ore body according to claim 1, wherein: the stope bottom ore removal roadway communicated with the segmented rock drilling roadway is comprehensively determined according to the inclination angle of ore bodies and the stope span, and the length of the segmented rock drilling roadway is preferably shortened on the premise that the segmented rock drilling roadway is arranged in a downhill mode and the gradient of the segmented rock drilling roadway is smaller than or equal to the maximum climbing capacity of the rock drilling equipment and the ore removal equipment; the gradient of the transportation connecting channel is less than or equal to the maximum climbing capacity of the rock drilling equipment and the ore removal equipment.
3. The large-diameter deep hole stoping and bottom stoping leveling system for the inclined thick and large ore body according to claim 1 or 2, wherein: the ore removal roadway of the stope in the one step is arranged in a flat slope in the corresponding range of the panel interval columns, and is arranged in a downhill slope from odd-numbered panel interval columns to even-numbered panel interval columns in the corresponding range of the stope, wherein the slope is 2-3 degrees; the ore removal roadway of the stope in the two steps is arranged in a flat slope in the corresponding range of the panel interval columns, and is arranged in a downhill slope from the even number panel interval columns to the odd number panel interval columns in the corresponding range of the stope, and the slope is 2-3 degrees.
4. The large-diameter deep hole stoping and bottom stoping leveling system for the inclined thick and large ore body according to claim 1, wherein: the section specification of the ore removal roadway is larger than the sections of all other roadways, the section shape of the ore removal roadway is a three-centered arch, the section specification is 4.8m multiplied by 4.6m, the section shapes of the segmented transportation roadway, the segmented rock drilling roadway, the transportation connecting road and the cutting roadway are three-centered arches, the section specification is 4.0m multiplied by 3.8m, and the section of the cutting raise is 2.0m multiplied by 2.0 m.
5. The large-diameter deep hole stoping and bottom stoping leveling system for the inclined thick and large ore body according to claim 1, wherein: reserving strip-shaped ore pillars in the construction process of the drilling chamber to control the exposed area of a top plate rock mass, and supporting the top plate of the drilling chamber by adopting a combined supporting mode of anchor cables, anchor rods, hanging reinforcing mesh and spraying slurry; the length of the anchor cable is 12-15m, and the support mesh of the anchor cable is 3.0m multiplied by 3.0m-4.5m multiplied by 4.5 m; the anchor rod is a resin anchor rod, the length of the anchor rod is 2.0-2.5m, and the support mesh degree of the anchor rod is 1.0m multiplied by 1.0m-1.5m multiplied by 1.5 m; the reinforcing mesh is made of reinforcing steel bars with the diameter of 8-12mm, and the mesh size is 100mm multiplied by 100 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010484174 | 2020-06-01 | ||
| CN2020104841745 | 2020-06-01 |
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| CN111677508A CN111677508A (en) | 2020-09-18 |
| CN111677508B true CN111677508B (en) | 2022-04-05 |
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| CN202010498127.6A Expired - Fee Related CN111677508B (en) | 2020-06-01 | 2020-06-04 | Inclined thick and large ore body large-diameter deep hole stoping bottom-leveling mining alignment system |
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| AU (1) | AU2021101511A4 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113622916B (en) * | 2021-07-12 | 2024-04-09 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Stope point column supporting and reinforcing and recycling method |
| CN113847028A (en) * | 2021-08-13 | 2021-12-28 | 安徽金日晟矿业有限责任公司 | Deep hole arrangement process for back stepping of broken ore body |
| CN113775339B (en) * | 2021-11-12 | 2022-03-11 | 矿冶科技集团有限公司 | Mining method for broken ore body under condition of hanging wall broken surrounding rock |
| CN116378664B (en) * | 2023-03-26 | 2024-05-03 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Mining method suitable for crushing ore bodies |
| CN116892391B (en) * | 2023-05-11 | 2024-05-03 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Medium-length hole mining method for inclined thick and large crushed ore body |
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2021
- 2021-03-24 AU AU2021101511A patent/AU2021101511A4/en not_active Ceased
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| CN108612530A (en) * | 2018-04-18 | 2018-10-02 | 中南大学 | A kind of mining methods of upper disk rock crusher slant middle thick orebody |
| CN108625856A (en) * | 2018-06-11 | 2018-10-09 | 安徽大昌矿业集团有限公司 | A kind of mining methods in the two neighboring one ore removal lane of stope of underground mine |
| CN109083644A (en) * | 2018-08-16 | 2018-12-25 | 中南大学 | A kind of safe and efficient mining methods of gently inclined medium thick orebody |
| CN110259451A (en) * | 2019-06-20 | 2019-09-20 | 中南大学 | A kind of efficient mining methods of gently inclined medium thick orebody Pre-control roof |
| CN110295908A (en) * | 2019-06-20 | 2019-10-01 | 中南大学 | A kind of gently inclined medium thick orebody mining methods in the segmentation lane that rises and falls |
| CN110388209A (en) * | 2019-07-25 | 2019-10-29 | 长沙矿山研究院有限责任公司 | A kind of high-dipping bilayer ore body stage deep hole mining method |
| CN110644996A (en) * | 2019-08-19 | 2020-01-03 | 西北矿冶研究院 | Open stope subsequent filling mining method suitable for gently inclined medium-thickness ore body |
| CN110656938A (en) * | 2019-08-19 | 2020-01-07 | 西北矿冶研究院 | Subsequent filling mining method suitable for gently inclined medium-thickness broken ore body |
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| AU2021101511A4 (en) | 2021-06-24 |
| CN111677508A (en) | 2020-09-18 |
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