AU2021101512A4 - Panel area and panel area column collaborative mining method for an inclined thick and large ore body - Google Patents
Panel area and panel area column collaborative mining method for an inclined thick and large ore body Download PDFInfo
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- AU2021101512A4 AU2021101512A4 AU2021101512A AU2021101512A AU2021101512A4 AU 2021101512 A4 AU2021101512 A4 AU 2021101512A4 AU 2021101512 A AU2021101512 A AU 2021101512A AU 2021101512 A AU2021101512 A AU 2021101512A AU 2021101512 A4 AU2021101512 A4 AU 2021101512A4
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- 238000005065 mining Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000011435 rock Substances 0.000 claims abstract description 80
- 238000005422 blasting Methods 0.000 claims abstract description 25
- 238000005520 cutting process Methods 0.000 claims abstract description 22
- 238000005553 drilling Methods 0.000 claims description 57
- 238000011065 in-situ storage Methods 0.000 claims description 7
- 230000009194 climbing Effects 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000000243 solution Substances 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
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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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)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present invention relates to a panel area and panel area column collaborative
mining method of an inclined thick and large ore body. The method 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 the panel areas are mined first, followed by
the panel area columns; stopes in the panel areas are divided into a primary stope
and a secondary stope for stoping in two steps; the primary stope and the secondary
stope are mined by large diameter deep hole blasting to cave the ore, the caving ore
rocks are shoveled out by a scraper through the sublevel transportation roadways
and the ore removal roadways, and the goaf is filled later; the panel area columns
are divided into odd panel area columns and even panel area columns, the even
panel area columns are mined first, followed by the odd area columns; all of the even
panel area columns would be mined, while every two odd panel area columns are
mined sequentially out of three, and medium-deep holes are adopted in panel area
columns to mine and fill section by section from bottom to top. The present
invention has advantages such as large stope production capacity, high efficiency,
high ore recovery rate, small amount of mining preparation and cutting work, high
synergistic utilization rate and so on.
3/4
4
even panel area
columns
panel atreA
odd panelarea
columns
Figure 5
Figure 6
Description
3/4
4
even panel area columns
panel atreA
odd panelarea columns
Figure 5
Figure 6
Technical Field
The present invention relates to the field of underground mining, especially to a
panel area and panel area column collaborative mining method for an inclined thick
and large ore.
Background Technology
Large-diameter deep hole mining method is an efficient and economical mining
method which applies open-pit deep hole bench blasting technology to underground
mining, a typical mining method comprising the vertical carter retreat mining
method. VCR method is an efficient, safe and economical open stope mining method,
mainly characterized by blasting with spherical cartridges in a large-diameter deep
and vertical hole, where stopes are mined in two steps and backfilled to provide
necessary ground pressure. VCR method has integrated technology or technics like
deep-hole rock drilling equipment, C.W. Livingston's spherical charge blasting crater
theory and large trackless mining equipment. Technological characteristics thereof
are as follow: excavating a drilling chamber or roadway for drilling operation
horizontally at an upper part of the ore block, using a large-diameter ITH (in the hole)
drill to drill a deep hole down to the roof of the lower mining chamber, or according
to designed depth of the ore blasting line, constructing an inverted blasting crater by
spherical charges with the lower free face of the blast hole as the blasting free
surface, blasting ore level by level from bottom to top until the upper drilling
chamber is communicated and transporting blasted ore out of the lower ore removal
roadway. This method is suitable for mining of ores and rocks over medium hardness
or a stable steeply dipping ore body above medium thickness, requiring that the
ore-rock interfaces and the ore body are regular, and few dunn bass, otherwise
stope dilution and high loss rate is liable to happen. VCR method was firstly applied
in early 1973 at the North Copper Mine in Canada, for sublevel chamber caving. At
the end of 1973, the first production scale test of the VCR method was completed in a pillar of the Levack Nickel Copper Mine, an International Nickel Mining Corporation, by blasting a spherical charge in vertical bore with a downward diameter of 165mm, and thereafter, it had been produced and promoted in the United States, Spain,
Sweden, Australia and other countries. In recent years, with the deepening of the
theory and technology of large diameter deep hole blasting, two new blasting
technologies, slot cut - lateral sublevel caving of VCR method and VCR slot cut - full
hole lateral stage blasting, have been developed. The large diameter deep hole
mining method is an efficient mining method with main advantages of less amount
of mining cutting, short stope preparation time, lots of byproduct ore, and large
stope production capacity due to large-diameter deep-hole ore blasting.
At present, the large-diameter deep hole mining method is mainly used in the mining
of steeply inclined and extremely thick ore bodies and gently inclined and extremely
thick ore bodies. It is seldom used in inclined thick and large ore body. The reason is
that due to the restriction of the dip angle and thickness of the ore body, a large
number of stope preparation works need to be arranged, and it is difficult to realize
economic and reasonable configuration of the stope preparation works; at the same
time, ore pillar recovering difficulty is high and it is difficult to realize efficient
collaborative recovery of pillars. As a result, the present invention provides a panel
area and panel area column collaborative mining method for an inclined thick and
large ore to address above-mentioned problem.
Summary of Invention
In order to solve above technical issues, the present invention offers a panel area and
panel area column collaborative mining method for an inclined thick and large ore,
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, the internal of panel areas are divided into primary
stopes and secondary stopes which are arranged along the trend, so as to stope in two steps; and the panel area columns are sequentially numbered and divided into odd panel area columns and even panel area columns;
II. at the footwall of ore-rock junction, a sublevel transportation roadway is
arranged in the middle of each adjacent primary stope and secondary stope,
on the other side of each stope is arranged an undercutting ore receiving
roadway, and the sublevel transportation roadways and undercutting ore
receiving roadways are connected by ore extracting drifts to form a bottom
ore removal structure; sublevel rock drilling roadways are constructed in the
odd panel area columns, one end of each sublevel rock drilling roadway is
connected to the sublevel transportation roadway, the other end is
constructed till the ore-rock junction at a hanging wall of one of the primary
stopes, at the same time, rock drilling chambers are dug at the top of the
primary stopes on both sides to form a working space of large diameter long
hole rock drilling and charging blasting in the first- step stopes, and at one
side in the primary stopes near the even panel area columns are arranged
cutting levels and cutting patios; 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 one of the sublevel transportation
roadways, the other end is constructed till an ore-rock junction at a hanging
wall of one of the secondary stopes, at the same time, rock drilling chambers
are dug at the top of the secondary stopes on both sides to form a working
space of large diameter long hole rock drilling and charging blasting in the
second- step stopes, and at one side in the secondary stopes near the odd
panel area columns are arranged cutting levels and cutting patios.
Ill. an internal portion of panel areas are divided into the primary stopes and the
secondary stopes which are arranged along the trend, so as to stope in two
steps, and the mining process of the primary stopes is similar to that of the
secondary stopes; firstly at the bottom of the stopes, upward fan-shaped
medium-deep holes are constructed inside the undercutting ore receiving
roadways and blasted to undercut, then downward fan-shaped deep holes of large diameter are constructed inside the rock drilling chambers; cutting grooves are formed with the cutting patios as free surfaces, and then the cutting grooves are used as the free surfaces for retreating ore caving, the caving ore rocks are shoveled out by scrapers through the sublevel transportation roadways and the ore removal roadways; the primary stopes are filled with high strength cured pack after being mined and the secondary stope are filled with lower strength cured pack after being mined;
IV. panel area columns are mined when the mining and filling of the stopes
inside the panel areas are finished, the even numbered panel area columns
are mined first, followed by the odd numbered area columns, all the even
numbered panel area columns would all be mined, while every two odd
numbered panel area columns will be mined sequentially out of three; the
panel area columns are mined from bottom to top section by section, the
upper sections are mined after mining and filling the lower sections; while
mining section by section, downward fan-shaped medium-deep holes are
constructed in the rock drilling roadways of the upper sections, a retreating
mining is conducted from the hanging wall to the footwall, and the caving ore
rocks are removed by the remote-controlled scrapers at the ends of the
working faces of the sublevel rock drilling roadways.
Preferably, length of the panel areas arranged along the ore body trend is 80-100cm,
width of each primary stope is 12-16cm, width of each secondary step stope is
16-20cm, when stability of the ore and rock is good or in-situ stress is small, choose a
bigger value, and when stability of the ore and rock is relatively poor or in-situ stress
is large, choose a lower value; width of the panel area columns is 14-16m, and when
stability of the ore and rock is relatively poor or in-situ stress is large, choose a lower
value, and when stability of the ore and rock is good or in-situ stress is small, choose
a bigger value.
Further, length of the sublevel transportation roadways communicating with the rock drilling roadways shall be determined based on a dipping angle of the ore body and width of span of the stopes and the length of the sublevel transportation roadways shall be preferably less while promising gradient of the rock drilling roadways is less than or equal to gradient of the rock drilling facilities and a maximum climbing ability of the ore mining equipment.
Further, the cutting grooves are used as free surfaces for full hole lateral blasting, and
two to four rows blast holes are blasted at one time when blasting large-diameter
deep holes.
Preferably, 28-day uniaxial compressive strength of the high strength cured pack is
greater than or equal to 3.0-3.5MPa, 28-day uniaxial compressive strength of the
lower strength cured pack is 1.0-1.5MPa; when filling the panel area columns, the
lower sections are filled with lower strength cured pack or nonconsolidated pack,
and the upper sections are filled with cure pack which has the 28-day uniaxial
compressive strength of 1.5-2.OMPa.
Preferably, diameter of the large diameter deep hole is 110-165mm, the blast hole
row spacing is 2.0-3.0m, and the blast hole spacing is 2.2-3.5m.
Further, a bottom portion of the large diameter deep holes is 0.5m away from upper
undercutting boundary of medium-deep holes at the lower sections when the large
diameter deep holes are constructed.
Beneficial Effects
Compared to existing techniques and methods, the panel area and panel area
column collaborative mining method for an inclined thick and large ore offered by
the present invention has following beneficial effects:
1. Large diameter deep hole blasting is adopted in stoping, and the caved ore rocks
are concentrated in the bottom structure so that the stope production capacity is large and production efficiency is high.
2. The panel areas and panel area columns are sequentially and collaboratively
mined in order to maximize recovery of precious mineral resources, and ore
recovery rate is high.
3. Stoping and preparation of the panel areas and panel area column are considered
as a whole system and well collaborated, so that amount of preparation and
cutting work is small and synergistic utilization rate is high.
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 mining preparation engineering layout in the primary
slope of the present invention;
Figure 3 is a top view (B-B) of mining preparation engineering layout in the primary
slope of the present invention;
Figure 4 is front view (A-A) of mining preparation engineering layout in the secondary
slope of the present invention;
Figure 5 is a top view (C-C) of mining preparation engineering layout in the secondary
slope of the present invention.
Figure 6 is a front view (A-A) of stope mining in the primary slope of the present
invention.
Figure 7 is a front view (A-A) of stope mining in the secondary slope of the present
invention.
The markups in the figures are listed as follows:
1-sublevel transportation roadway; 2- undercutting ore receiving roadway; 3- ore
removal roadway; 4- sublevel rock drilling roadway; 5- rock drilling chamber; 6-high
strength cured pack; 7.high-diameter deep hole; 8. Lower strength 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 1-7, an ore body of a mine is inclined and thick, with an average
dip angle of 35 and an average thickness of 30m. The ore body locates at an
elevation of 300-500m below the surface. Both stability of the ore body and
surrounding rock belong to the stable to extremely stable type. The present mine is
mined by the panel area and panel area column collaborative mining method for an
inclined thick and large ore offered by the present invention comprising 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, the internal of panel areas are
divided into the primary stopes and the secondary stopes which are
arranged along the trend, so as to stope in two steps; and the panel area
columns are sequentially numbered and divided into odd panel area
columns and even panel area columns; the length of the panel areas
arranged along the ore body is 80cm, width of each primary stope is 14cm,
and width of each secondary stope is 20cm.
II. at the footwall of an ore-rock junction, a sublevel transportation roadway
1 is arranged between each adjacent primary stope and secondary stope,
on the other side of each stope is arranged an undercutting ore receiving
roadway 2, and the sublevel transportation roadways 1 and undercutting
ore receiving roadways 2 are connected by ore extracting drifts 3 to form
a bottom ore removal structure; sublevel rock drilling roadways 4 are
constructed in the odd panel area columns, one end of each sublevel rock drilling roadway 4 is connected to the sublevel transportation roadway 1, the sublevel transportation roadways 1 connected to sublevel rock drilling roadways 4 are constructed comprehensively based on the dip angle of ore body and stope span; under the premise of ensuring slopes of sublevel rock drilling roadways 4 are less than or equal to maximum climbing capacity of the rock drilling equipment and mining equipment, length of the sublevel rock drilling roadways 4 should be as short as possible; the other end of each sublevel rock drilling roadway 4 is constructed till the ore-rock junction at a hanging wall of one of the primary stopes, at the same time, rock drilling chambers 5 are dug at a top portion of the primary stopes on both sides to form a working space of large diameter long hole 7 rock drilling and charging blasting in the primary stopes; in the process of constructing the rock drilling chambers 5, the roof of the drilling chambers 5 is supported by anchor cables, anchor rods, hanging steel meshes and shotcrete; the anchor rod adopts resin anchor rod, with a length of 2.0-2.5m, and size the supporting mesh 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 size of the mesh is
100mmx100mm.
Ill. 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 sublevel transportation roadway 1, the sublevel
transportation roadways 1 connected to sublevel rock drilling roadways 4
are constructed comprehensively based on the dip angle of ore body and
stope span; under the premise of ensuring the slopes of sublevel rock
drilling roadways 4 are less than or equal to the maximum climbing
capacity of the rock drilling equipment and mining equipment, length of
the sublevel rock drilling roadways 4 should be as short as possible; the
other end of each sublevel rock drilling roadway 4 is constructed till the
ore-rock junction at hanging wall of a secondary stope, at the same time, rock drilling chambers 5 are dug at the top of the secondary stopes on both sides to form a working space of large diameter long hole 7 rock drilling and charging blasting in the second- step stopes, and at one side in the secondary stopes near the odd panel area columns are arranged cutting levels and cutting patios.
IV. the internal of panel areas are divided into the primary stopes and the
secondary stopes which are arranged along the trend, so as to stope in
two steps, and mining process of the primary stope is similar to that of
the secondary stope; firstly at the bottom of the stopes, upward
fan-shaped medium-deep holes are constructed inside the undercutting
ore receiving roadways 2 and blasted and undercut, then downward large
diameter deep holes 7 are constructed inside the rock drilling chambers, a
diameter of large diameter deep holes is 165mm, the blast hole row
spacing is 3.0m, and the blast hole spacing is 3.5m; a bottom portion of of
large diameter deep holes is 0.5m away from upper undercutting
boundary of medium-deep holes at lower sections when the large
diameter deep holes 7 are constructed; the cutting grooves are used as
the free surfaces for the full hole lateral caving, two to four rows of blast
holes are blasted at one time when blasting large-diameter deep holes,
and the caving ore rocks are drawn out by the scraper from the sublevel
transportation roadways 1 and ore removal roadways 3; the primary
stopes are filled with high strength cured pack 6 after being mined,
28-day uniaxial compressive strength of the high strength cured pack 6 is
greater than or equal to 3.0-3.5MPa, the secondary stope are filled with
lower strength cured pack after being mined and 28-day uniaxial
compressive strength of the lower strength cured pack is 1.0-1.5MPa.
V. panel area columns are mined when the mining and filling of the stopes
inside the panel areas are finished, the even panel area columns are
mined first, followed by the odd area columns, all of the even panel area
columns would be mined, while every two odd panel area columns are mined sequentially out of three; the panel area columns are mined from bottom to top section by section, the upper sections are mined after mining and filling the lower sections; while mining section by section, downward fan-shaped medium-deep holes are constructed in the rock drilling roadways 4 of the upper sections, a retreating mining is conducted from the hanging wall to the footwall, and the caving ore rocks are removed by the remote-controlled scraper at the ends of the working faces of the sublevel rock drilling roadways 4. When filling the panel area columns, the lower sections are filled with lower strength cured pack or nonconsolidated pack, and the upper sections are filled with cure pack which has the 28-day uniaxial compressive strength of 1.5-2.MPa.
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 (7)
1. A panel area and panel area column collaborative mining method for an inclined
thick and large ore body, comprising 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, the internal of panel areas are divided into primary
stopes and secondary stopes which are arranged along the trend, so as to
stope in two steps; and the panel area columns are sequentially numbered
and divided into odd panel area columns and even panel area columns;
(2) at the footwall of ore-rock junction, a sublevel transportation roadway is
arranged in the middle of each adjacent primary stope and secondary stope,
on the other side of each stope is arranged an undercutting ore receiving
roadway, and the sublevel transportation roadways and undercutting ore
receiving roadways are connected by ore extracting drifts to form a bottom
ore removal structure; sublevel rock drilling roadways are constructed in the
odd panel area columns, one end of each sublevel rock drilling roadway is
connected to the sublevel transportation roadway, the other end is
constructed till the ore-rock junction at a hanging wall of one of the primary
stopes, at the same time, rock drilling chambers are dug at the top of the
primary stopes on both sides to form a working space of large diameter long
hole rock drilling and charging blasting in the first- step stopes, and at one
side in the primary stopes near the even panel area columns are arranged
cutting levels and cutting patios; 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 one of the sublevel transportation
roadways, the other end is constructed till an ore-rock junction at a hanging
wall of one of the secondary stopes, at the same time, rock drilling chambers are dug at the top of the secondary stopes on both sides to form a working space of large diameter long hole rock drilling and charging blasting in the second- step stopes, and at one side in the secondary stopes near the odd panel area columns are arranged cutting levels and cutting patios.
(3) an internal portion of panel areas are divided into the primary stopes and the
secondary stopes which are arranged along the trend, so as to stope in two
steps, and the mining process of the primary stopes is similar to that of the
secondary stopes; firstly at the bottom of the stopes, upward fan-shaped
medium-deep holes are constructed inside the undercutting ore receiving
roadways and blasted to undercut, then downward fan-shaped deep holes of
large diameter are constructed inside the rock drilling chambers; cutting
grooves are formed with the cutting patios as free surfaces, and then the
cutting grooves are used as the free surfaces for retreating ore caving, the
caving ore rocks are shoveled out by scrapers through the sublevel
transportation roadways and the ore removal roadways; the primary stopes
are filled with high strength cured pack after being mined and the secondary
stope are filled with lower strength cured pack after being mined;
(4) panel area columns are mined when the mining and filling of the stopes
inside the panel areas are finished, the even numbered panel area columns
are mined first, followed by the odd numbered area columns, all the even
numbered panel area columns would all be mined, while every two odd
numbered panel area columns will be mined sequentially out of three; the
panel area columns are mined from bottom to top section by section, the
upper sections are mined after mining and filling the lower sections; while
mining section by section, downward fan-shaped medium-deep holes are
constructed in the rock drilling roadways of the upper sections, a retreating
mining is conducted from the hanging wall to the footwall, and the caving ore
rocks are removed by the remote-controlled scrapers at the ends of the working faces of the sublevel rock drilling roadways.
2. The panel area and panel area column collaborative mining method for an
inclined thick and large ore body according to claim 1, wherein the length of the
panel areas arranged along the ore body is 80-100cm, the width of each primary
stope is 12-16cm, the width of each second step stope is 16-20cm, when the
stability of the ore and rock is good or the in-situ stress is small, the value is small,
when the stability of the ore and rock is relatively poor or the in-situ stress is
large, and when the stability of ore and rock is relatively poor or the in-situ stress
is large, the maximum value is taken.
3. The panel area and panel area column collaborative mining method for an
inclined thick and large ore body according to claim 1, wherein length of the
sublevel transportation roadways communicating with the rock drilling roadways
shall be determined based on a dipping angle of the ore body and width of span
of the stopes and the length of the sublevel transportation roadways shall be
preferably less while promising gradient of the rock drilling roadways is less than
or equal to gradient of the rock drilling facilities and a maximum climbing ability
of the ore mining equipment.
4. The panel area and panel area column collaborative mining method for an
inclined thick and large ore body according to claim 1,wherein the cutting
grooves are used as free surfaces for full hole lateral blasting, and two to four
rows blast holes are blasted at one time when blasting large-diameter deep
holes.
5. The panel area and panel area column collaborative mining method for an
inclined thick and large ore body according to claim 1,wherein 28-day uniaxial
compressive strength of the high strength cured pack is greater than or equal to
3.0-3.5MPa, 28-day uniaxial compressive strength of the lower strength cured
pack is 1.0-1.5MPa; when filling the panel area columns, the lower sections are filled with lower strength cured pack or nonconsolidated pack, and the upper sections are filled with cure pack which has the 28-day uniaxial compressive strength of 1.5-2.OMPa.
6. The panel area and panel area column collaborative mining method for an
inclined thick and large ore body according to claim 1 or 4, wherein diameter of
the large diameter deep hole is 110-165mm, the blast hole row spacing is
2.0-3.0m, and the blast hole spacing is 2.2-3.5m.
7. The panel area and panel area column collaborative mining method for an
inclined thick and large ore body according to claim 1, wherein a bottom portion
of the large diameter deep holes is 0.5m away from upper undercutting
boundary of medium-deep holes at the lower sections when the large diameter
deep holes are constructed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010684756.8A CN111894591B (en) | 2020-07-16 | 2020-07-16 | Collaborative mining method for inclined thick and large ore body panel and panel interval column |
| CN2020106847568 | 2020-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2021101512A4 true AU2021101512A4 (en) | 2021-05-13 |
Family
ID=73189195
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|---|---|---|---|
| AU2021101512A Ceased AU2021101512A4 (en) | 2020-07-16 | 2021-03-24 | Panel area and panel area column collaborative mining method for an inclined thick and large ore body |
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| Country | Link |
|---|---|
| CN (1) | CN111894591B (en) |
| AU (1) | AU2021101512A4 (en) |
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| CN112177613B (en) * | 2020-11-13 | 2021-08-17 | 长沙矿山研究院有限责任公司 | Sector medium-diameter deep hole mining process for steeply inclined medium-thickness ore body |
| CN113216964B (en) * | 2021-05-18 | 2022-05-27 | 中钢集团马鞍山矿山研究总院股份有限公司 | Recovery method of deposit ore in process of transferring caving method to filling method |
| CN113700481B (en) * | 2021-09-16 | 2024-01-05 | 安徽铜冠产业技术研究院有限责任公司 | Zone control filling continuous mining method for underground goaf tray zone isolated ore pillar |
| CN115030723B (en) * | 2022-03-28 | 2023-03-31 | 长沙矿山研究院有限责任公司 | Non-explosive mechanical rock breaking two-step turn-back type access filling mining method |
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| CN101818643B (en) * | 2010-05-18 | 2012-06-27 | 中南大学 | Stepped non-pillar continuous filling mining method for deep well super high large breaking ore body panel |
| CN102168579A (en) * | 2011-04-15 | 2011-08-31 | 中南大学 | Rib-pillar-free continuous sublevel filling method for mining preparation in medium-thickness slope crushed ore body vein |
| CN103032070A (en) * | 2011-10-09 | 2013-04-10 | 彭康 | Boundary-controlled room column type sublevel open stoping subsequent stage filling mining method |
| CN106677780B (en) * | 2017-02-21 | 2018-09-14 | 中冶北方（大连）工程技术有限公司 | Bottom ore removal afterwards filling mining method is cut in a kind of upward and downward stage rock drilling segmentation |
| 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 |
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| CN111894591A (en) | 2020-11-06 |
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