AU2019439785B2 - Pressed coal filling mining system and process for end slope of open pit - Google Patents
Pressed coal filling mining system and process for end slope of open pit Download PDFInfo
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- AU2019439785B2 AU2019439785B2 AU2019439785A AU2019439785A AU2019439785B2 AU 2019439785 B2 AU2019439785 B2 AU 2019439785B2 AU 2019439785 A AU2019439785 A AU 2019439785A AU 2019439785 A AU2019439785 A AU 2019439785A AU 2019439785 B2 AU2019439785 B2 AU 2019439785B2
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- filling
- tunnel
- pipe
- coal
- monitoring
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- 239000003245 coal Substances 0.000 title claims abstract description 57
- 238000005065 mining Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000005641 tunneling Effects 0.000 claims abstract description 42
- 238000012544 monitoring process Methods 0.000 claims abstract description 38
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 238000005086 pumping Methods 0.000 claims abstract description 7
- 230000002787 reinforcement Effects 0.000 claims description 17
- 239000002351 wastewater Substances 0.000 claims description 10
- 239000011440 grout Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 238000005429 filling process Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
- E21F15/06—Filling-up mechanically
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Pipe Accessories (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A pressed coal filling mining system and process for an end slope of an open pit. The mining system comprises a tunneling machine (1), a mechanical arm (12), a filling pump (7), a filling pipeline (5), and a solenoid valve (16). The mining process comprises: tunneling and automatic coal cutting, automatic pipe arrangement, tunnel entrance sealing, automatic pipe filling, and automatic monitoring of tunnel filling. When the tunneling machine (1) performs tunneling and coal cutting, the tunneling machine (1) causes the mechanical arm (12) to extend so as to drive the filling pipeline (5) to move forwards. The filling pipeline (5) is automatically arranged at a bottom end of a side of a tunnel (3). After mining, the tunneling machine (1) moves backwards, and the mechanical arm (12) is separated from the filling pipeline (5), such that the filling pipeline (5) is left in place, and automatic pipe arrangement is achieved. A monitoring pipeline (8) is provided on a flat plate corresponding to the tunnel (3) to be filled. When the tunnel (3) is fully filled with cementing material, the monitoring pipeline (8) sends a signal, and the filling pump (7) stops pumping slurry to the filling pipeline (5) thereby completing tunnel filling, and achieving automatic monitoring of tunnel filling. The process combines a coal mining process employing a cementing filling with a coal mining process employing end slope tunneling, employs an unmanned filling working face to achieve mining of pressed coal at the end slope of the open pit, and achieves automatic pipe arrangement and automatic monitoring of tunnel filling.
Description
The present invention relates to the field of mine filling and mining processes, and more
particular to a filling and mining system and process for open-pit end slope pressed coal.
Some open-pit coal mines in China have been mined for a long time with a high mining
intensity. Therefore, the coal resources which are easily to mine in an open-pit boundary are
already basically mined completely. However, a mine pit slope presses a large number of coal
resources; if such coal is not mined, serious waste of coal resources will be caused, which is
adverse to the sustainable development of a coal mine and causes a great resource loss to the
country; furthermore, the remained coal will be weathered because of long time contact with
oxygen, and is easy to spontaneously ignite, thereby causing serious threats to the safety of
the surrounding natural environment and villages.
Generally, the slope pressed coal is recovered with an end slope mining method.
However, under the situation that a top plate is incomplete and the strength is not high enough,
end slope mining is easy to cause large area of in-break the coal seam top plate, thereby
damaging the machine and endangering the safety of workers. During end slope mining, a
large number of coal pillars need to be reserved to maintain mining safety; the reserved coal
pillars influence coal mining rate, and are easy to cause a spontaneous combustion disaster;
Furthermore, end slope mining leads to surface subsidence, thereby causing difficulty to slope
management.
Object of the present invention: the present invention provides a filling and mining
system for open-pit end slope pressed coal to overcome the defects in the existing mining
mode; the present invention not only can recover a large number of coal resources, but also can reduce surface subsidence, thereby ensuring stope safety and slope stability.
The technical solution adopted by the present invention is:
A filling and mining system for open-pit end slope pressed coal of the present invention,
including a tunneling machine for automatically driving a tunnel under an end slope step to
cut coal, wherein a mechanical arm hinged to the tunneling machine is connected to an outlet
end of a filling pipe, and drags and lays the filling pipe in the tunnel; an inlet end of thefilling
pipe is connected to an external filling pump; the filling pump is externally connected to an
inlet P of a two-position three-way electromagnetic valve; two outlets A and B of the
two-position three-way electromagnetic valve are respectively connected to the filling pipe in
the tunnel and an external waste water tank; a hole is vertically drilled on a bench floor
corresponding to the tunnel until a gob area; a monitoring pipe is embedded; and electrodes
are respectively disposed on the two inner sides of the monitoring pipe above the bench floor,
and are externally connected to an electromagnet of the two-position three-way
electromagnetic valve via electric wires.
Further, the mechanical arm consists a hinged arm and a fixed arm which are both in an
"L" shape and are hinged at the top; a vertical section of the fixed arm is fixed to a horizontal
section; the hinged arm is disposed on the inner side of the fixed arm in a matching manner,
and consists of a telescopic section and a horizontal section which are hinged; a plurality of
pin holes are disposed on the horizontal section;
A reinforcement hoop is mounted at a front end of thefilling pipe; the reinforcement
hoop is welded with an overhanging platform; and the overhanging platform is provided
thereon with pin holes correspondingly matched with the pin holes on the horizontal section
of the hinged arm.
Telescopic section of the hinged arm consists of an upper big pipe and a lower small pipe
which are sleeved together.
The monitoring pipe is made from a PVC pipe; an upper opening is 200mm higher than
the bench floor; two electrodes are symmetrically disposed on the two inner sides of the pipe
at positions on the same horizontal plane with the ground of the bench floor; and the
electrodes are not conductive to each other.
A filling and mining process for open-pit end slope pressed coal of the present invention,
including the following steps:
(1) tunneling and automatic coal cutting: using a tunneling machine to automatically
drive a tunnel and cut coal, and transporting the coal out of a tunnel via a rubber belt
conveyor;
(2) automatic pipe arranging: extending a mechanical arm of the tunneling machine to
drag a filling pipe; with the constant propulsion of the tunneling machine, automatically
arranging the filling pipe at the bottom on one side of the tunnel; when the tunneling machine
propels to a stop mining line, stopping cutting coal; withdrawing devices out of the filled
tunnel, and leaving the filling pipe in the tunnel;
(3) tunnel inlet closing: erecting a filling bag at an inlet of the tunnel, and utilizing the
filling bag to fill and close the inlet of the tunnel by means of expansion;
(4) automatic pipe filling: starting a filling pump, performing various pipe filling
processes: filling water in the pipe, filling grout to push water, filling a consolidated fill to
push the grout, and pumping the consolidated fill; and
(5) automatic full-tunnel monitoring: after the tunnel and a monitoring pipe are full of
the consolidated fill, conducting electrodes on the two sides, transmitting a signal to a
two-position three-way electromagnetic valve via the monitoring pipe, controlling the filling
pump to stop pumping a feed pulp to the filling pipe, realizing automatic full-tunnel
monitoring, and completing tunnel filling.
Further, the automatic pipe arranging process is:
Before the tunneling machine enters the tunnel, a hinged arm of the mechanical arm and
a reinforcement hoop are assembled with a pin; when the tunneling machine marches forward,
the mechanical arm is connected to the reinforcement hoop, and drags the filling pipe to
march forward; after stoping is completed, a fixed arm is withdrawn with the tunneling
machine, and the support pin thereof gradually falls off; and finally, the hinged arm is
separated from the reinforcement hoop, and the filling pipe is remained in situ.
Further, the automatic full-tunnel monitoring process is:
Before the tunnel is full and the monitoring pipe has no consolidated fill inside, not conducting the two electrodes, and keeping the two-position three-way electromagnetic valve in a normal state, that is, connecting the filling pump to the filling pipe, and filling the tunnel;
After the tunnel is full and the monitoring pipe is full of the consolidated fill, conducting the
two electrodes, and keeping the two-position three-way electromagnetic valve in an electric
excitation state, that is, connecting the filling pump to a waste water tank, discharging the
consolidated fill in the filling pump to the waste water tank, and completing the tunnel filling.
Beneficial effects: compared with the prior art, the filling and mining system of the
present invention has the following advantages:
(1) The present invention combines a consolidated fill mining process for an
underground mine and an end slope tunneling mining process, solves the problem that the
open-pit mine end slope pressed coal is difficult to recover, and improves resource recovery
rate.
(2) The present invention realizes automatic coal mining and filling and an unmanned
working face, can effectively improve the production efficiency and production safety of the
working face, and reducing production cost and labor strength.
(3) The present invention treats large scale solid wastes such as waste rocks, excavated
soil and the like, complies with the requirement for green mine development, reduces the
surface subsidence caused by end slope mining, and complies with the requirement for slope
stability.
Fig. 1 is a schematic view of the mining process for open-pit end slope pressed coal
according to the present invention;
Fig. 2 is a schematic view of the filling process for open-pit end slope pressed coal
according to the present invention;
Fig 3 is a schematic view of the fixed arm according to the present invention;
Fig 4 is a schematic view of the hinged arm according to the present invention;
Fig 5 is a schematic view of the reinforcement hoop according to the present invention;
Fig 6 is a schematic view of the monitoring pipe according to the present invention;
Fig 7 is a schematic view how the mechanical arm drags the pipe according to the
present invention;
Fig 8 is a schematic view how the mechanical arm is separated from the pipe according
to the present invention; and
Fig 9 is a schematic view of the automatic full-tunnel monitoring principle according to
the present invention.
In the figures: 1, tunneling machine; 2, end slope step; 3, tunnel; 4, end slope pressed
coal; 5, filling pipe; 6, filling bag; 7, filling pump; 8, monitoring pipe; 9, waste water tank; 10,
reinforcement hoop; 11, overhanging platform; 12, mechanical arm; 121, hinged arm; 122,
fixed arm; 13, pin; 141, electrode a; 142, electrode b; 15, feed pulp hopper; 16, two-position
three-way electromagnetic valve; 17, electromagnet.
The present invention provides a filling and mining process for open-pit end slope
pressed coal, not only can recover a large number of coal resources, but also can reduce
surface subsidence, thereby ensuring stope safety and slope stability.
The present invention will be further described hereafter in combination with the
drawings.
A filling and mining system for open-pit end slope pressed coal of the present invention,
as shown in Fig. 1 and 2, has the following structure: a tunneling machine 1 automatically
drives a tunnel 3 under an end slope step 2, mines end slope pressed coal 4; the coal is
uploaded to a middle scraper-trough conveyor by raking pawls of the tunneling machine 1, is
then conveyed to a rubber belt conveyor, and is transported out of the tunnel 3 by the rubber
belt conveyor; a mechanical arm hinged to the tunneling machine 1 is connected to an outlet
end of a filling pipe, and drags and lays the filling pipe in the tunnel 3 with the constant
propulsion of the tunneling machine 1; an inlet end of the filling pipe 5 is connected to an
external filling pump 7; the filling pump 7 is externally connected to an inlet P of a
two-position three-way electromagnetic valve 16; two outlets A and B of the two-position
three-way electromagnetic valve 16 are respectively connected to the filling pipe 5 in the tunnel and an external waste water tank 9; a hole is vertically drilled on a bench floor corresponding to the tunnel 3 until a gob area; a monitoring pipe 8 is embedded; and electrodes are respectively disposed on the two inner sides of the monitoring pipe 8 above the bench floor, and are externally connected to an electromagnet 17 of the two-position three-way electromagnetic valve 16 via electric wires. The mechanical arm 12 consists a hinged arm 121 and a fixed arm 122 which are both in an "L" shape and are hinged at the top; a vertical section of the fixed arm 122 is fixed to a horizontal section 2, as shown in Fig. 3; the hinged arm 121 is disposed on the inner side of the fixed arm 122 in a matching manner, and consists of a telescopic section and a horizontal section which are hinged; a plurality of pin holes are disposed on the horizontal section, as shown in Fig. 4; Telescopic section of the hinged arm consists of an upper big pipe and a lower small pipe which are sleeved together. A reinforcement hoop 10 is mounted at a front end of the filling pipe 5; as shown in Fig. , the reinforcement hoop 10 is welded with an overhanging platform 11; and the overhanging platform is provided thereon with pin holes correspondingly matched with the pin holes on the horizontal section of the hinged arm 121. The monitoring pipe 8 is made from a PVC pipe; an upper opening is 200mm higher than the bench floor; two electrodes are symmetrically disposed on the two inner sides of the pipe at positions on the same horizontal plane with the ground of the bench floor; and the electrodes are not conductive to each other, as shown in Fig. 6. A filling and mining process for open-pit end slope pressed coal of the present invention, including the following steps: (1) Tunneling and automatic coal cutting: using a tunneling machine 1 to automatically drive a tunnel and cut coal, and transporting the coal out of a tunnel 3 via a rubber belt conveyor; (2) Automatic pipe arranging: extending a mechanical arm 12 of the tunneling machine 1 to drag a filling pipe 5; with the constant propulsion of the tunneling machine, automatically arranging the filling pipe 5 at the bottom on one side of the tunnel 3; when the tunneling machine 1 propels to a stop mining line, stopping cutting coal; withdrawing the tunneling machine 1 and the rubber belt conveyor out of the tunnel 3 by means of automatically moving the machine set back and using a loader to assist to pull out, and leaving the filling pipe 5 in the tunnel;
(3) Tunnel inlet closing: erecting a filling bag 6 at an inlet of the tunnel, and utilizing the
filling bag to fill and close the inlet of the tunnel by means of expansion;
(4) Automatic pipe filling: starting a filling pump 7, performing various pipe filling
processes: filling water in the pipe, filling grout to push water, filling a consolidated fill to
push the grout, and pumping the consolidated fill; and
(5) Automatic full-tunnel monitoring: after the tunnel and a monitoring pipe are full of
the consolidated fill, conducting electrodes on the two sides, transmitting a signal to a
two-position three-way electromagnetic valve 16 via the monitoring pipe, controlling the
filling pump 7 to stop pumping a feed pulp to thefilling pipe 5, realizing automatic full-tunnel
monitoring, and completing tunnel filling.
Further, the automatic pipe arranging process is:
Before the tunneling machine 1 enters the tunnel 3, a hinged arm 121 of the mechanical
arm 12 and a reinforcement hoop 10 are assembled with a pin 13; when the tunneling machine
1 marches forward, the mechanical arm 12 is connected to the reinforcement hoop 10, and
drags the filling pipe 5 to march forward, as shown in Fig. 7; after stoping is completed, a
fixed arm 122 is withdrawn with the tunneling machine 1, and the support pin 13 thereof
gradually falls off; and finally, the hinged arm 121 is separated from the reinforcement hoop
, and the filling pipe 5 is remained in situ, as shown in Fig. 8.
Further, the automatic full-tunnel monitoring process is:
Before the tunnel is full and the monitoring pipe 8 has no consolidated fill inside, not
conducting the two electrodes, and keeping the two-position three-way electromagnetic valve
16 in a normal state, that is, connecting the filling pump 7 to the filling pipe 5, and filling the
tunnel; After the tunnel is full and the monitoring pipe 8 is full of the consolidated fill,
conducting the two electrodes, and keeping the two-position three-way electromagnetic valve
16 in an electric excitation state, that is, connecting the filling pump 7 to a waste water tank 9, discharging the consolidated fill in the filling pump to the waste water tank 9, and completing the tunnel filling, as shown in Fig. 9.
Claims (7)
1. A filling and mining system for open-pit end slope pressed coal, wherein a tunneling
machine (1) automatically drives a tunnel (3) under an end slope step (2) to cut coal; a
mechanical arm (12) hinged to the tunneling machine (1) is connected to an outlet end of a
filling pipe (5), and drags and lays the filling pipe in the tunnel (3); an inlet end of the filling
pipe (5) is connected to an external filling pump (7);
the filling pump (7) is externally connected to an inlet P of a two-position three-way
electromagnetic valve (16); two outlets A and B of the two-position three-way
electromagnetic valve (16) are respectively connected to the filling pipe (5) in the tunnel and
an external waste water tank (9);
a hole is vertically drilled on a bench floor corresponding to the tunnel (3) until a gob
area; a monitoring pipe (8) is embedded; and electrodes are respectively disposed on the two
inner sides of the monitoring pipe (8) above the bench floor, and are externally connected to
an electromagnet (17) of the two-position three-way electromagnetic valve (16) via electric
wires.
2. The filling and mining system for open-pit end slope pressed coal according to claim 1,
wherein the mechanical arm (12) consists a hinged arm (121) and a fixed arm (122) which are
both in an "L" shape and are hinged at the top; a vertical section of the fixed arm (122) is
fixed to a horizontal section; the hinged arm (121) is disposed on the inner side of the fixed
arm (122) in a matching manner, and consists of a telescopic section and a horizontal section
which are hinged; a plurality of pin holes are disposed on the horizontal section;
a reinforcement hoop (10) is mounted at a front end of the filling pipe (5); the
reinforcement hoop (10) is welded with an overhanging platform (11); and the overhanging
platform is provided thereon with pin holes correspondingly matched with the pin holes on
the horizontal section of the hinged arm (121).
3. The filling and mining system for open-pit end slope pressed coal according to claim 2,
wherein telescopic section of the hinged arm (121) consists of an upper big pipe and a lower
small pipe which are sleeved together.
4. The filling and mining system for open-pit end slope pressed coal according to claim 1,
wherein the monitoring pipe (8) is made from a PVC pipe; an upper opening is 200mm higher
than the bench floor; two electrodes are symmetrically disposed on the two inner sides of the
pipe at positions on the same horizontal plane with the ground of the bench floor; and the
electrodes are not conductive to each other.
5. A mining process of the filling and mining system for open-pit end slope pressed coal
according to any one of claims 1-4, comprising the following steps:
(1) tunneling and automatic coal cutting: using a tunneling machine (1) to automatically
drive a tunnel and cut coal, and transporting the coal out of a tunnel (3) via a rubber belt
conveyor;
(2) automatic pipe arranging: extending a mechanical arm (12) of the tunneling machine
(1) to drag a filling pipe (5); with the constant propulsion of the tunneling machine,
automatically arranging the filling pipe (5) at the bottom on one side of the tunnel (3); when
the tunneling machine (1) propels to a stop mining line, stopping cutting coal; withdrawing
devices out of the filled tunnel, and leaving the filling pipe (5) in the tunnel;
(3) tunnel inlet closing: erecting a filling bag (6) at an inlet of the tunnel, and utilizing
the filling bag to fill and close the inlet of the tunnel by means of expansion;
(4) automatic pipe filling: starting a filling pump (7), performing various pipe filling
processes: filling water in the pipe, filling grout to push water, filling a consolidated fill to
push the grout, and pumping the consolidated fill; and
(5) automatic full-tunnel monitoring: after the tunnel and a monitoring pipe are full of
the consolidated fill, conducting electrodes on the two sides, transmitting a signal to a
two-position three-way electromagnetic valve (16) via the monitoring pipe, controlling the
filling pump (7) to stop pumping a feed pulp to thefilling pipe (5), realizing automatic
full-tunnel monitoring, and completing tunnel filling.
6. The mining process of the filling and mining system for open-pit end slope pressed
coal according to claim 5, wherein the automatic pipe arranging process is:
before the tunneling machine (1) enters the tunnel (3), a hinged arm (121) of the
mechanical arm (12) and a reinforcement hoop (10) are assembled with a pin (13); when the tunneling machine (1) marches forward, the mechanical arm (12) is connected to the reinforcement hoop (10), and drags the filling pipe (5) to march forward; after stoping is completed, a fixed arm (122) is withdrawn with the tunneling machine (1), and the support pin (13) thereof gradually falls off; and finally, the hinged arm (121) is separated from the reinforcement hoop (10), and the filling pipe (5) is remained in situ.
7. The mining process of the filling and mining system for open-pit end slope pressed coal according to claim 5, wherein the automatic full-tunnel monitoring process is: before the tunnel is full and the monitoring pipe (8) has no consolidated fill inside, not conducting the two electrodes, and keeping the two-position three-way electromagnetic valve (16) in a normal state, that is, connecting the filling pump (7) to the filling pipe (5), and filling the tunnel; After the tunnel is full and the monitoring pipe (8) is full of the consolidated fill, conducting the two electrodes, and keeping the two-position three-way electromagnetic valve (16) in an electric excitation state, that is, connecting the filling pump (7) to a waste water tank (9), discharging the consolidated fill in the filling pump to the waste water tank (9), and completing the tunnel filling.
4 1 3 5
FIG. 1 2
8 6 7
4 3 5 9
FIG. 2
122
FIG. 3
1/4
FIG. 4
11 13
FIG. 5
141 142
FIG. 6 2/4
5
FIG. 7
121 122
FIG. 8
3/4
3 5 9
16 A B
15 P 17 141 142 7 FIG. 9
4/4
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246912.X | 2019-03-29 | ||
| CN201910246912.XA CN109882240B (en) | 2019-03-29 | 2019-03-29 | Open-air end slope coal-pressing filling mining system |
| PCT/CN2019/109879 WO2020199546A1 (en) | 2019-03-29 | 2019-10-08 | Pressed coal filling mining system and process for end slope of open pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2019439785A1 AU2019439785A1 (en) | 2020-11-19 |
| AU2019439785B2 true AU2019439785B2 (en) | 2021-09-16 |
Family
ID=66935120
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2019439785A Ceased AU2019439785B2 (en) | 2019-03-29 | 2019-10-08 | Pressed coal filling mining system and process for end slope of open pit |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN109882240B (en) |
| AU (1) | AU2019439785B2 (en) |
| RU (1) | RU2756537C1 (en) |
| WO (1) | WO2020199546A1 (en) |
| ZA (1) | ZA202006726B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882240B (en) * | 2019-03-29 | 2020-04-14 | 中国矿业大学 | Open-air end slope coal-pressing filling mining system |
| CN110284883A (en) * | 2019-07-08 | 2019-09-27 | 中国矿业大学 | Recovery method is filled by a kind of row of adopting, open coal mine end side |
| CN111075505B (en) * | 2019-12-17 | 2021-03-16 | 天地科技股份有限公司 | Coal mine fully-mechanized coal mining face segmented filling mining method |
| CN111236943B (en) * | 2020-02-27 | 2021-06-08 | 中煤能源研究院有限责任公司 | Mining method for advancing, cutting and retreating filling of open-air end slope |
| CN111364998B (en) * | 2020-03-12 | 2021-05-25 | 中煤能源研究院有限责任公司 | Single-side edge filling and tunneling mining method for open-pit mine end slope coal pressing |
| CN111396055B (en) * | 2020-03-24 | 2021-03-30 | 中煤科工集团沈阳设计研究院有限公司 | Method for arranging side coal pressing mining chamber of strip mine |
| CN112855162B (en) * | 2021-01-29 | 2023-03-21 | 辽宁工程技术大学 | Mining method for upper coal seam of composite coal seam strip mine near extraction end slope |
| CN112963618B (en) * | 2021-05-19 | 2021-08-06 | 中煤科工能源科技发展有限公司 | Method and device for long-distance laying and continuous filling of filling pipeline of side coal mining cave |
| CN113847086A (en) * | 2021-10-09 | 2021-12-28 | 中国煤炭科工集团太原研究院有限公司 | Filling method for side mining cave of strip mine |
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2019
- 2019-03-29 CN CN201910246912.XA patent/CN109882240B/en active Active
- 2019-10-08 AU AU2019439785A patent/AU2019439785B2/en not_active Ceased
- 2019-10-08 RU RU2020136147A patent/RU2756537C1/en active
- 2019-10-08 WO PCT/CN2019/109879 patent/WO2020199546A1/en active Application Filing
-
2020
- 2020-10-28 ZA ZA2020/06726A patent/ZA202006726B/en unknown
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| DE4443130A1 (en) * | 1994-12-03 | 1996-06-13 | Hoelter Heinz | Monitoring biological activity of packing and filling materials for disposal in mines |
| CN103758568A (en) * | 2014-02-14 | 2014-04-30 | 中国矿业大学 | Opencast coal mine end slope filling mining method |
| CN109667618A (en) * | 2019-02-25 | 2019-04-23 | 闫红世 | A kind of grouting vehicle backfilling coal cutting roadway |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2756537C1 (en) | 2021-10-01 |
| ZA202006726B (en) | 2021-09-29 |
| WO2020199546A1 (en) | 2020-10-08 |
| AU2019439785A1 (en) | 2020-11-19 |
| CN109882240A (en) | 2019-06-14 |
| CN109882240B (en) | 2020-04-14 |
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