AU2021101511A4 - Flat bottom mining preparation system for large diameter deep hole stope of inclined thick and large ore body - Google Patents
Flat bottom mining preparation system for large diameter deep hole stope of inclined thick and large ore body Download PDFInfo
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- AU2021101511A4 AU2021101511A4 AU2021101511A AU2021101511A AU2021101511A4 AU 2021101511 A4 AU2021101511 A4 AU 2021101511A4 AU 2021101511 A AU2021101511 A AU 2021101511A AU 2021101511 A AU2021101511 A AU 2021101511A AU 2021101511 A4 AU2021101511 A4 AU 2021101511A4
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- 238000005065 mining Methods 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 239000011435 rock Substances 0.000 claims abstract description 69
- 238000005553 drilling Methods 0.000 claims abstract description 54
- 238000005520 cutting process Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 11
- 238000005422 blasting Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000007600 charging Methods 0.000 claims description 6
- 230000009194 climbing Effects 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011378 shotcrete Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The present invention discloses a flat bottom mining preparation system for large
diameter deep hole stope of inclined thick and large ore body. The large-diameter
long hole stoping flat-bottom mining preparation system is characterized in that the
ore body is divided into panel areas along the trend, panel area columns are reserved
among the panel areas, and stopes in the panel areas are divided into the first-step
stope and the second-step stope for stoping in two steps, and the panel area
columns are sequentially numbered and divided into odd panel area columns and
even panel area columns; sublevel transportation roadways, ore removal roadways
and transportation connection roadways are arranged on the ore body footwall; and
sublevel rock drilling roadways are constructed in the panel area columns and rock
drilling chambers are formed at the top of stopes. In the present invention, mining
engineering of slopes and columns in the panel areas are considered entirely and
used synergistically during sloping and the present invention has advantages such as
small work amount and high utilization rate.
1/3
Q~tefl pane area
-columns r
rL
'10
No.
oddpanel-area
-columns
- 13 7 13 - 13a 1 3
10 ' 1 fl 10'0 M CO 3f
- C0 0 rt C. r* C, 7
MO WO C Wa wO WO w 0 CO CO M
C0 C 10C Ci 1 C+ O C O 1
i n Ca v a oa o
'0 ' V '0 w0 '0 0 VO
IM p CD a CD a rw rp a 3
Figure1I
Figure 2
Description
1/3
Q~tefl pane area -columns r
rL
'10
No. oddpanel-area -columns - 13 7 13 - 13a 1 3
10 ' 1 fl 10'0 M CO 3f - C0 0 rt C. r* C, 7 MO WO C Wa wO WO w 0 CO CO M
C0 C 10C Ci 1 C+ O C O 1 i n Ca v a oa o '0' V '0 w0 '0 0 VO
IM p CD a CD a rw rp a 3
Figure1I
Figure 2
Technical Field
The present invention belongs to the field of underground mining, in particular to a
Flat bottom mining preparation system for large diameter deep hole stope of inclined
thick and large ore body.
Background Technology
Large diameter long hole mining is a mining method with easy mining preparation
and cutting engineering configuration, small preparation and cutting work, large
mining capacity and high effeciency. At present, the most commonly used two-step
stage large diameter long hole open stoping with subsequent filling method is to
divide the ore body into columns and chambers for stoping in two steps, the first step
is to stope the chambers and the second step is to stope ore columns. While stoping,
a DTH drill is used to construct large -diameter long hole in upper rock drilling
chambers in a middle section. First of all, form a cutting groove by blasting with the
cutting patio as a free surface, and then carry out ore caving operations. The ore
caving is blasted by a traditional VCR method or by way of sublevel or stage
side-blasting. The caving ores are concentrated at the bottom of the middle section
and shoveled out of an ore removal structure. After ore drawing, backfill the mine
goaf. In the first step, after ore caving in the chambers fill the chambers with high
strength cured packs after mining; in the second step, after ore caving in the columns
fill the column area with low strength cured packs after mining.
Currently, the large-diameter long hole stoping method is mainly used in steeply
inclined think and large ore body and slowly inclined very thick and large ore body
stope, and seldom used for mining the inclined thick and large ore body. The reason
is that it is difficult to configure a reasonable and economical engineering layout due
to restriction of dip angle and thickness of the ore body. Therefore, aimed at solving the problem of difficult configuration of an economic and reasonable mining layout during large diameter deep hole mining of inclined thick and large ore body, the present invention offers a flat bottom mining preparation system for large diameter deep hole stope of inclined thick and large ore body.
Summary of Invention
In order to address the technical problems above, the present invention discloses a
flat-bottom mining preparation system for large-diameter long hole stoping of
inclined thick and large ore body, characterized in that:
1. the ore body is divided into panel areas along the trend, panel area
columns are reserved in the panel areas, the panel areas are mined first,
followed by the panel area columns, stopes are arranged in the panel
areas along the trend and divided into first-step stopes and second-step
stopes for mining in two steps, and the panel area columns are
sequentially numbered and divided into odd panel area columns and even
panel area columns;
II. sublevel transportation roadways are arranged in the surrounding rocks of
footwall, an ore removal roadway is arranged at the bottom of each stope,
and transportation connection roadways are arranged to connect the
sublevel transportation roadways with the ore removal roadways wherein
the transportation connection roadways corresponding to the ore
removal roadways at the bottom of the first-step stope are arranged in
the surrounding rocks of footwall corresponding to the odd panel area
columns, and the transportation connection roadways corresponding the
ore removal roadways at the bottom of the second-step stope are
arranged in the surrounding rocks of footwall corresponding to the even
panel area columns;
Ill. sublevel rock drilling roadways are constructed in the panel area columns,
one end of each sublevel rock drilling roadway is connected to the ore
removal roadway at the bottom of the upper stope, the other end is constructed till the ore-rock junction at hanging wall of the first-step stope, at the same time, rock drilling chambers are dug at the top of the first-step stope on both sides to form working space for large diameter long hole rock drilling, charging and blasting in the first- step stope, and at one side in the first-step stope near the even panel area columns are arranged cutting levels and cutting patios.
IV. and in the even panel area columns are constructed inclined sublevel rock
drilling roadways, one end of each sublevel rock drilling roadway is
connected to the ore removal roadway at the bottom of the upper stope,
the other end is constructed till the ore-rock junction at hanging wall of
second-step stope, at the same time, rock drilling chambers are dug at the
top of the second-step stope on both sides to form working space of large
diameter long hole rock drilling and charging blasting in the second-step
stope, and at one side in the second-step stope near the odd panel area
columns are arranged cutting levels and cutting patios.
Further, the ore removal roadways at the bottom of the stope connected to the
sublevel rock drilling roadways, are constructed comprehensively based on the dip
angle of ore body and stope span; under the premise of ensuring the sublevel rock
drilling roadways are arranged downhill and the gradient are less than or equal to
maximum climbing capacity of rock drilling equipment and mining equipment, length
of the sublevel rock drilling roadways should be as short as possible; and gradient of
the transportation connection roadways are less than or equal to the maximum
climbing capacity of the rock drilling equipment and mining equipment.
Further, the ore removal roadways in the first-step stope are arranged along a flat
slope within a corresponding range of the panel area columns, and in a
corresponding range of the stope, the ore removal roadways in the first-step stope
are arranged downhill from the odd panel area columns to the even panel area
columns, with a gradient of 2°-3°; and the ore removal roadways in the second-step stope are arranged along a flat slope within a corresponding range of the panel area columns, and in a corresponding range of the stope, arranged downhill from the even panel area columns to the odd panel area columns, and the slope is 2°-3°.
Preferentially, size of cross section of ore removal roadways is bigger than that of all
other roadways, the section of ore removal roadways is in a shape of a
three-centered arch, size of cross section of is 4.8m*4.6m; the section formed by
each of the sublevel transportation roadways, sublevel rock drilling roadways,
transportation connection roadways and cutting levels is in a shape of a
three-centered arch, the specification thereof is 4.0m*3.8m; and size of cross section
of cutting patios is 2.0m*2.0m.
Further, in the process of constructing the rock drilling chambers, bar-shaped ore
columns are reserved to control exposed area of roof rock mass, and the roof of the
drilling chambers is supported by anchor cables, anchor rods, hanging steel meshes
and shotcrete; the length of the anchor cable is 12-15m, and size of the anchor cable
supporting mesh is 3.0m*3.0m-4.5m*4.5m; the anchor rod adopts resin anchor rod,
with a length of 2.0-2.5m, and size of the supporting mesh of the anchor rod is
1.0m*1.m-1.5m*1.5m; and the steel mesh is made of rebars with a diameter of
8-12mm, and size of the mesh is 100mmx100mm.
Beneficial Effects
Compared to the existing techniques and methods, the large-diameter long hole
stoping flat-bottom mining preparing system for inclined thick and large ore body has
following beneficial effects: less cutting and preparation work involved and short
slope preparation time; the present invention can be put into production very quickly
as stage-wise deep hole blasting method for mining is adopted, it is only necessary to
build an ore removal structure at the bottom and rock drilling chambers at the top,
less preparation and cutting work is necessary compared with other mining methods;
at the same time, utilization rate of slopes and columns in the panel areas is high as they are used synergistically during sloping.
Description of Drawings
The present invention is further explained in details in combination with the attached
drawings below.
Figure 1 is a schematic diagram of a panel area layout of the present invention;
Figure 2 is a front view (A-A) of stope preparation engineering layout in the first step
of the present invention;
Figure 3 is a top view (B-B) of stope preparation engineering layout in the first step of
the present invention;
Figure 4 is front view (A-A) of stope preparation engineering layout in the second
step of the present invention;
Figure 5 is a top view (C-C) of stope preparation engineering layout in the second
step of the present invention.
The markups in the figures are listed as follows:
1-sublevel transportation roadway; 2- transportation connection roadway; 3- ore
removal roadway; 4- sectional rock drilling roadway; 5- rock drilling chamber; 6-high
strengthened cured pack.
Specific Embodiments
A clear and complete description of the technical scheme of each embodiment of the
present invention will be given below in combination with the attached drawings.
Obviously, the described embodiments are only some of embodiments of the
present invention and not all of the embodiments; based on the embodiments of the
present invention, all other embodiments obtained by an ordinary technician in the
art without making any creative work are protected by the present invention.
As shown in Figures 1-5, a flat bottom mining preparation system for large diameter
deep hole stope of inclined thick and large ore body comprises following steps:
1. the ore body is divided into panel areas along the trend, panel area
columns are reserved in the panel areas, the panel areas are mined first
followed by the panel area columns, stopes arranged in the panel areas
along the trend are divided into the first-step stope and the second-step
stope for stoping in two steps, and the panel area columns are
sequentially numbered and divided into odd panel area columns and even
panel area columns;
II. sublevel transportation roadways 1 are arranged in the surrounding rocks
of footwall, an ore removal roadway 3 is arranged at the bottom of each
stope, and transportation connection roadways 2 are arranged to connect
the sublevel transportation roadways 1 with the ore removal roadways 3
wherein the transportation connection roadways 2 corresponding to the
ore removal roadways 3 at the bottom of the first-step stope are arranged
in the surrounding rocks of footwall corresponding to the odd panel area
columns, and the transportation connection roadways 2 corresponding
the ore removal roadways 3 at the bottom of the second-step stope are
arranged in the surrounding rocks of footwall corresponding to the even
panel area columns;
Ill. sublevel rock drilling roadways 4 are constructed in the panel area
columns, one end of each sublevel rock drilling roadway 4 is connected to
the ore removal roadway 3 at the bottom of the upper stope, the other
end is constructed till the ore-rock junction at hanging wall of first-step
stope, at the same time, rock drilling chambers 5 are dug at the top of the
first-step stope on both sides to form the working space for large
diameter long hole rock drilling, charging and blasting in the first- step
stope, and at one side in the first-step stope near the even panel area
columns are arranged cutting levels and cutting patios.
IV. and in the even panel area columns are constructed inclined sublevel rock
drilling roadways 4, one end of each sublevel rock drilling roadway 4 is connected to the ore removal roadway 3 at the bottom of the upper stope, the other end is constructed till the ore-rock junction at hanging wall of second-step stope, at the same time, rock drilling chambers 5 are dug at the top of the second-step stope on both sides to form the working space of large diameter long hole rock drilling and charging blasting in the second- step stope, and at one side in the second-step stope near the odd panel area columns are arranged cutting levels and cutting patios.
Further, the ore removal roadways 3 in the first-step stope are arranged a flat slope
within the corresponding range of the panel area columns, and in the corresponding
range of the stope, arranged downhill from the odd panel area columns to the even
panel area columns, and the slope is 2°-3°; and the ore removal roadways 3 in the
second-step stope are arranged a flat slope within the corresponding range of the
panel area columns, and in the corresponding range of the stope, arranged downhill
from the even panel area columns to the odd panel area columns, and the slope is
2°-3°. Further, the ore removal roadways 3 at the bottom of the stope are connected
to the sublevel rock drilling roadways 4, and are constructed comprehensively based
on the dip angle of ore body and stope span; under the premise of ensuring the
sublevel rock drilling roadways 4 are arranged downhill and the slopes are less than
or equal to the maximum climbing capacity of the rock drilling equipment and mining
equipment, the length of the sublevel rock drilling roadways 4 should be as short as
possible; and the slope of the transportation connection roadways 2 are less than or
equal to the maximum climbing capacity of the rock drilling equipment and mining
equipment. Further, the specification of the section of ore removal roadways 3 is
bigger than that of all other roadways, the section of ore removal roadways 3 is in a
shape of a three-centered arch, the specification is 4.8m*4.6m; the section formed
by the sublevel transportation roadways 1, sublevel rock drilling roadways 4,
transportation connection roadways 2 and cutting levels is in a shape of a
three-centered arch, the specification thereof is 4.0m*3.8m; and the specification of
section of cutting patios is 2.0m*2.0m.
Further, in the process of constructing the rock drilling chambers 5, bar-shaped ore
columns are reserved to control the exposed area of roof rock mass, and the roof of
the drilling chambers 5 is supported by the combined support of anchor cable,
anchor rod, hanging steel mesh and shotcrete; the length of the anchor cable is
12-15m, and the anchor cable supporting mesh degree is 3.0m*3.0m-4.5m*4.5m;
the anchor rod adopts resin anchor rod, with a length of 2.0-2.5m, and the
supporting mesh degree of the anchor rod is 1.0m*1.Om-1.5m*1.5m; and the steel
mesh is made of rebars with a diameter of 8-12mm, and the mesh degree is
100mmx100mm.
The above are only some better concrete embodiments of the invention, but the
protection scope of the invention is not limited to them. Any equivalent substitution
or alteration made by skilled in the art according to the technical scheme of the
present invention and its invention conception and based on the technical solution
disclosed in the present invention shall fall within the scope of protection of the
present invention.
Claims (5)
1. A flat bottom mining preparation system for large diameter deep hole stope of
inclined thick and large ore body, comprising following steps :
i. the ore body is divided into panel areas along the trend, panel area columns are
reserved in the panel areas, the panel areas are mined first, followed by the
panel area columns, stopes are arranged in the panel areas along the trend and
divided into first-step stopes and second-step stopes for mining in two steps, and
the panel area columns are sequentially numbered and divided into odd panel
area columns and even panel area columns;
ii. sublevel transportation roadways are arranged in the surrounding rocks of
footwall, an ore removal roadway is arranged at the bottom of each stope, and
transportation connection roadways are arranged to connect the sublevel
transportation roadways with the ore removal roadways wherein the
transportation connection roadways corresponding to the ore removal roadways
at the bottom of the first-step stope are arranged in the surrounding rocks of
footwall corresponding to the odd panel area columns, and the transportation
connection roadways corresponding the ore removal roadways at the bottom of
the second-step stope are arranged in the surrounding rocks of footwall
corresponding to the even panel area columns;
iii. sublevel rock drilling roadways are constructed in the panel area columns, one
end of each sublevel rock drilling roadway is connected to the ore removal
roadway at the bottom of the upper stope, the other end is constructed till the
ore-rock junction at hanging wall of the first-step stope, at the same time, rock
drilling chambers are dug at the top of the first-step stope on both sides to form
working space for large diameter long hole rock drilling, charging and blasting in
the first- step stope, and at one side in the first-step stope near the even panel
area columns are arranged cutting levels and cutting patios; and iv. in the even panel area columns are constructed inclined sublevel rock drilling roadways, one end of each sublevel rock drilling roadway is connected to the ore removal roadway at the bottom of the upper stope, the other end is constructed till the ore-rock junction at hanging wall of second-step stope, at the same time, rock drilling chambers are dug at the top of the second-step stope on both sides to form working space of large diameter long hole rock drilling and charging blasting in the second-step stope, and at one side in the second-step stope near the odd panel area columns are arranged cutting levels and cutting patios.
2. The flat bottom mining preparation system for large diameter deep hole stope of
inclined thick and large ore body according to the claim 1, wherein the ore
removal roadways at the bottom of the stope connected to the sublevel rock
drilling roadways, are constructed comprehensively based on the dip angle of ore
body and stope span; under the premise of ensuring the sublevel rock drilling
roadways are arranged downhill and the gradient are less than or equal to
maximum climbing capacity of rock drilling equipment and mining equipment,
length of the sublevel rock drilling roadways should be as short as possible; and
gradient of the transportation connection roadways are less than or equal to the
maximum climbing capacity of the rock drilling equipment and mining
equipment.
3. The flat bottom mining preparation system for large diameter deep hole stope of
inclined thick and large ore body according to any one of the claim 1 or 2,
wherein the ore removal roadways in the first-step stope are arranged along a
flat slope within a corresponding range of the panel area columns, and in a
corresponding range of the stope, the ore removal roadways in the first-step
stope are arranged downhill from the odd panel area columns to the even panel
area columns, with a gradient of 2°-3°; and the ore removal roadways in the
second-step stope are arranged along a flat slope within a corresponding range of
the panel area columns, and in a corresponding range of the stope, arranged downhill from the even panel area columns to the odd panel area columns, and the slope is 2°-3°.
4. The flat bottom mining preparation system for large diameter deep hole stope of
inclined thick and large ore body according to the claim 1, wherein size of cross
section of ore removal roadways is bigger than that of all other roadways, the
section of ore removal roadways is in a shape of a three-centered arch, size of
cross section of is 4.8m*4.6m; the section formed by each of the sublevel
transportation roadways, sublevel rock drilling roadways, transportation
connection roadways and cutting levels is in a shape of a three-centered arch, the
specification thereof is 4.0m*3.8m; and size of cross section of cutting patios is
2.0m*2.0m.
5. The flat bottom mining preparation system for large diameter deep hole stope of
inclined thick and large ore body according to the claim 1, wherein in the process
of constructing the rock drilling chambers, bar-shaped ore columns are reserved
to control exposed area of roof rock mass, and the roof of the drilling chambers is
supported by anchor cables, anchor rods, hanging steel meshes and shotcrete;
the length of the anchor cable is 12-15m, and size of the anchor cable supporting
mesh is 3.0m*3.0m-4.5m*4.5m; the anchor rod adopts resin anchor rod, with a
length of 2.0-2.5m, and size of the supporting mesh of the anchor rod is
1.0m*1.m-1.5m*1.5m; and the steel mesh is made of rebars with a diameter of
8-12mm, and size of the mesh is 100mmx100mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020104841745 | 2020-06-01 | ||
| CN202010484174 | 2020-06-01 |
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| Publication Number | Publication Date |
|---|---|
| AU2021101511A4 true AU2021101511A4 (en) | 2021-06-24 |
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| AU2021101511A Ceased AU2021101511A4 (en) | 2020-06-01 | 2021-03-24 | Flat bottom mining preparation system for large diameter deep hole stope of inclined thick and large ore body |
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| CN (1) | CN111677508B (en) |
| AU (1) | AU2021101511A4 (en) |
Cited By (1)
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| 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 |
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| 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 |
| 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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| CN101328809B (en) * | 2008-06-25 | 2010-12-15 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Non-bottom pillar deep hole falling-back type mining method |
| CN102808622B (en) * | 2012-08-03 | 2014-08-20 | 西北矿冶研究院 | Method for recovering ore pillar by medium-length hole and deep hole combined blasting technology |
| CN108442930B (en) * | 2018-03-15 | 2019-10-11 | 中南大学 | A kind of Medium Thickness And Medium Slope Angle metal ore mining methods |
| CN108612530B (en) * | 2018-04-18 | 2020-06-12 | 中南大学 | Mining method for hanging wall surrounding rock crushing inclined medium-thickness ore body |
| CN108625856B (en) * | 2018-06-11 | 2020-02-18 | 安徽大昌矿业集团有限公司 | Mining method for one ore removal roadway of two adjacent stopes of underground mine |
| CN109083644B (en) * | 2018-08-16 | 2019-08-02 | 中南大学 | A kind of safe and efficient mining methods of gently inclined medium thick orebody |
| CN110295908B (en) * | 2019-06-20 | 2020-10-16 | 中南大学 | Mining method for gentle dip medium-thickness ore body in fluctuating sectional roadway |
| CN110259451B (en) * | 2019-06-20 | 2020-11-27 | 中南大学 | Pre-control roof efficient mining method for gently inclined medium-thickness ore body |
| CN110388209B (en) * | 2019-07-25 | 2020-11-03 | 长沙矿山研究院有限责任公司 | Deep hole mining method for steeply inclined double-layer ore body stage |
| CN110644996B (en) * | 2019-08-19 | 2021-04-20 | 西北矿冶研究院 | Open stope subsequent filling mining method suitable for gently inclined medium-thickness ore body |
| CN110656938B (en) * | 2019-08-19 | 2021-05-18 | 西北矿冶研究院 | Subsequent filling mining method suitable for gently inclined medium-thickness broken ore body |
-
2020
- 2020-06-04 CN CN202010498127.6A patent/CN111677508B/en not_active Expired - Fee Related
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2021
- 2021-03-24 AU AU2021101511A patent/AU2021101511A4/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111677508B (en) | 2022-04-05 |
| CN111677508A (en) | 2020-09-18 |
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