CN113738371B - Open-air highwall coal mining method - Google Patents
Open-air highwall coal mining method Download PDFInfo
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- CN113738371B CN113738371B CN202111157145.9A CN202111157145A CN113738371B CN 113738371 B CN113738371 B CN 113738371B CN 202111157145 A CN202111157145 A CN 202111157145A CN 113738371 B CN113738371 B CN 113738371B
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- flexible continuous
- roadway
- excavation
- conveying system
- conveying
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- 239000003245 coal Substances 0.000 title claims abstract description 41
- 238000005065 mining Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000009412 basement excavation Methods 0.000 claims abstract description 53
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 claims abstract description 5
- 238000005457 optimization Methods 0.000 description 8
- 230000009194 climbing Effects 0.000 description 3
- 239000010878 waste rock Substances 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 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
- E21C41/26—Methods of surface mining; Layouts therefor
- E21C41/28—Methods of surface mining; Layouts therefor for brown or hard coal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C47/00—Machines for obtaining or the removal of materials in open-pit mines
- E21C47/02—Machines for obtaining or the removal of materials in open-pit mines for coal, brown coal, or the like
-
- 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
-
- 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
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)
- Remote Sensing (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to an open-air side wall coal mining method, which uses a flexible continuous conveying system to convey coal materials mined by a heading machine out of a mining roadway; when the excavation roadway is positioned above the side wall bottom layer, a transportation road surface is trimmed on the side wall, the feeding end of the flexible continuous transportation system is positioned in the excavation roadway, the discharging end of the flexible continuous transportation system is positioned on the transportation road surface outside the excavation roadway, and the flexible continuous transportation system is in a bending state; the flexible continuous conveying system comprises a bidirectional self-walking device and a belt conveyor, wherein the bidirectional self-walking device is used for driving the flexible continuous conveying system to move forwards and backwards in a bidirectional manner, and the belt conveyor is used for conveying materials from one end to the other end. The flexible continuous conveying system is utilized to convey the excavated coal and the backfilled gangue, the flexibility is high, the direct conveying of the coal and the gangue between the inside and the outside of the roadway is realized, the problem of difficult arrangement of conveying equipment is solved, the exploitation of the highwall coal is realized, and the resource utilization rate is greatly improved.
Description
Technical Field
The invention relates to the technical field of coal mining, in particular to a method for mining side wall coal, and specifically relates to an open-air side wall coal mining method.
Background
The coal on the highwall is a common coal mine existing form, because the coal exists on the highwall, the mining difficulty is high, the arrangement of conveying equipment is difficult, even if a transportation road surface is trimmed around the highwall, the conveyor is limited by the fact that the conveyor cannot be bent, so that the conveyor cannot be arranged in an excavating roadway, the conveying equipment needs to move back and forth to finish the outward conveying of coal materials, the conveying equipment cannot turn around in the excavating roadway, only the reversing mode can be adopted to move outward, and great potential safety hazards exist, so that only the bottommost layer of the highwall is often mined, and a great amount of coal resources are wasted.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an open-air highwall coal mining method, which realizes coal resource mining at highwall positions, avoids coal resource waste and potential safety hazards caused by coal material transportation.
The invention is realized by the following technical scheme, and provides an open-air highwall coal mining method, which uses a flexible continuous conveying system to convey coal materials mined by a heading machine out of a mining roadway; when the excavation roadway is positioned at the bottom layer of the side wall, a feeding end of the flexible continuous conveying system enters the excavation roadway along the ground, and a discharging end of the flexible continuous conveying system is positioned outside the excavation roadway; when the excavation roadway is positioned above the side wall bottom layer, a transportation road surface extending from the ground to an excavation roadway inlet is trimmed on the side wall, the feeding end of the flexible continuous transportation system is positioned in the excavation roadway, the discharging end of the flexible continuous transportation system is positioned on the transportation road surface outside the excavation roadway, the flexible continuous transportation system is in a bending state, the transportation road surface is arranged to provide movable support for the flexible continuous transportation system and other movable transportation equipment, and the transportation of coal materials from the inside of the excavation roadway to the outside of the excavation roadway is realized by utilizing the bendable characteristic of the flexible continuous transportation system; the flexible continuous conveying system comprises a bidirectional self-walking device and a belt conveyor arranged on the bidirectional self-walking device, the bidirectional self-walking device is used for driving the flexible continuous conveying system to move forwards and backwards, and the belt conveyor is used for conveying materials from one end to the other end, so that the movement and feeding of the flexible continuous conveying system are realized; and after the excavation is finished, the whole flexible continuous transportation system automatically moves out of the excavation roadway. The bidirectional walking of the flexible continuous transportation system avoids turning around in the excavation roadway, and the use is more flexible.
As optimization, in the process of digging and mining, the flexible continuous conveying system synchronously moves along with the heading machine, and the whole self-moving of the flexible continuous conveying system and the coal conveying are simultaneously carried out. The arrangement of the optimization scheme ensures that the excavated coal is timely conveyed outwards by the flexible continuous conveying system, so that the continuity of the excavating operation is improved.
As optimization, the transportation road surface rises spirally around the side wall, and after the feeding end of the flexible continuous transportation system turns and enters the excavation roadway, the included angle between the part of the flexible continuous transportation system in the excavation roadway and the part of the flexible continuous transportation system in the transportation road surface is an obtuse angle. The transportation road surface of this optimization scheme sets up, has reduced flexible continuous transportation system's climbing degree of difficulty, and flexible continuous transportation system front and back two parts contained angle is the obtuse angle, has reduced the crooked tension of belt conveyor's conveyer belt, has guaranteed the reliability of carrying.
As optimization, the bidirectional self-walking device comprises a plurality of unit sections and a driving device for driving the unit body formed by each unit section to move, and the adjacent unit sections are hinged through a joint bearing. According to the optimization scheme, all unit sections of the bidirectional self-walking device are hinged through the joint bearing, so that the flexible continuous transportation system is bent in the height direction, and the bidirectional self-walking device is more suitable for climbing and walking in a roadway.
As optimization, after the excavation and mining of the excavation roadway are finished, the roadway to be filled formed by the excavation and mining is backfilled with waste rock, and when the waste rock is backfilled, the waste rock is conveyed into the roadway to be filled by using the flexible continuous conveying system. According to the optimized scheme, the flexible continuous conveying system is used for conveying the gangue, and the flexible continuous conveying system is used for conveying the gangue while integrally moving, so that the continuity of gangue conveying is realized.
As optimization, when the gangue is backfilled, the flexible continuous conveying system and the gangue throwing equipment synchronously move outwards from the roadway to be filled, and the integral self-moving of the flexible continuous conveying system and the gangue conveying are simultaneously carried out, so that the continuity of the gangue backfilling and the backfilling efficiency are further improved.
The beneficial effects of the invention are as follows: the flexible continuous conveying system is utilized to convey the excavated coal and the backfilled gangue, so that the flexibility is high, the direct conveying of the coal and the gangue between the inside and the outside of the roadway is realized, the problem that conveying equipment is difficult to arrange is solved, the exploitation of the highwall coal is realized, and the resource utilization rate is greatly improved.
Drawings
FIG. 1 is a schematic diagram of the coal mining state of the present invention;
the figure shows:
1. the flexible continuous conveying system comprises a flexible continuous conveying system, a mining conveying vehicle, a transfer belt conveyor, a conveying road surface, a tunnelling machine and a flexible continuous conveying system.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
In an open-air highwall coal mining method, as shown in fig. 1, when a development machine 5 performs development operation in a excavation roadway, a flexible continuous conveying system 1 is used for conveying coal materials excavated by the development machine out of the excavation roadway; and after the excavation and mining of the excavation roadway are finished, carrying out gangue backfill on the roadway to be filled formed by the excavation and mining, and conveying the gangue into the roadway to be filled by using a flexible continuous conveying system during gangue backfill.
Specifically, when the excavation roadway to be mined is positioned on the side wall bottom layer, the feeding end of the flexible continuous conveying system horizontally enters the excavation roadway along the ground, the discharging end of the flexible continuous conveying system is positioned outside the excavation roadway, a transfer belt conveyor 3 is arranged outside the excavation roadway, and coal materials output by the flexible continuous conveying system 1 are conveyed to the mining conveying vehicle 2 through the transfer belt conveyor 3. In the process of digging and mining, the flexible continuous conveying system synchronously moves along with the heading machine, the transfer belt conveyor synchronously moves along with the whole flexible continuous conveying system, the whole flexible continuous conveying system automatically moves and coal conveying are simultaneously carried out, and after the digging and mining are finished, the whole flexible continuous conveying system automatically moves out of the digging roadway.
When the excavation roadway to be mined is located above the side wall bottom layer, a transportation road surface 4 extending from the ground to an excavation roadway inlet is trimmed on the side wall, a feeding end of the flexible continuous transportation system is located in the excavation roadway, a discharging end of the flexible continuous transportation system is located on a transportation road surface outside the excavation roadway, the flexible continuous transportation system is in a bending state, a transportation belt conveyor corresponding to the discharging end of the flexible continuous transportation system is arranged on the transportation road surface 4, and likewise, in the process of excavation, the flexible continuous transportation system synchronously moves along with the tunnelling machine, the transportation belt conveyor integrally synchronously moves along with the flexible continuous transportation system, the whole self-moving of the flexible continuous transportation system and the coal conveying are simultaneously carried out, and after the process of excavation and mining is finished, the whole flexible continuous transportation system automatically moves out of the excavation roadway. In order to facilitate the movement of the flexible continuous conveying system, the conveying road surface spirally rises around the side wall, and after the feeding end of the flexible continuous conveying system turns to enter the excavation roadway, the included angle between the part of the flexible continuous conveying system positioned in the excavation roadway and the part positioned on the conveying road surface is an obtuse angle.
When the gangue is backfilled, the flexible continuous conveying system and the gangue throwing equipment synchronously move outwards from the roadway to be filled, and the integral self-moving of the flexible continuous conveying system and the gangue conveying are simultaneously carried out.
As a preferable scheme, the flexible continuous conveying system used in the mining method of the embodiment comprises a bidirectional self-walking device and a belt conveyor arranged on the bidirectional self-walking device, wherein the bidirectional self-walking device is used for driving the flexible continuous conveying system to move forwards and backwards in a bidirectional manner, and the belt conveyor is used for conveying materials from one end to the other end. The bidirectional self-walking device comprises a head, a body and a tail, wherein walking wheels and steering devices are arranged on the head and the body, and the movement tracks of the head, the body and the tail are identical. The car body comprises a plurality of unit sections and a driving device for driving the unit bodies formed by the unit sections to move, and the adjacent unit sections are hinged through joint bearings, so that the flexible continuous transportation system is bent in the vertical direction and the transverse direction, and the flexible continuous transportation system is more suitable for climbing and walking. The driving device comprises an annular chain which is closed along the circumferential direction and a driving motor which drives the annular chain to rotate, the plane where the annular chain is located is a vertical plane, a crawler body formed by each unit section is located in the annular space of the annular chain, the annular chain is provided with a limiting device, the annular chain and the unit sections are limited to generate relative displacement in the width direction through the limiting device, and when the adjacent unit sections generate relative rotation, the corresponding annular chain part generates corresponding bending. The unit sections are provided with brackets with carrier rollers, and the conveying belt of the belt conveyor is arranged on the carrier rollers of the brackets, so that the conveying belt bends along with the relative rotation between the unit sections. The unit section at the foremost end and the unit section at the rearmost end are respectively provided with a driving wheel meshed with the annular chain, each driving wheel is connected with a driving motor, when the driving motors drive the annular chain to rotate, the upper side edge of the annular chain is supported on the upper surface of the unit section, the lower side edge of the annular chain supports the lower surface of the unit section, the annular chain and the unit section relatively slide, the unit section at the foremost end is fixedly connected with the head, and the unit section at the rearmost end is fixedly connected with the tail of the vehicle, so that crawler tracking walking of the flexible continuous conveying system is realized.
Of course, the above description is not limited to the above examples, and the technical features of the present invention that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present invention and not for limiting the same, and the present invention has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present invention and the scope of the appended claims.
Claims (6)
1. An open-air highwall coal mining method is characterized in that: conveying the coal materials excavated by the heading machine out of the excavation roadway by using a flexible continuous conveying system;
when the excavation roadway is positioned at the bottom layer of the side wall, a feeding end of the flexible continuous conveying system enters the excavation roadway along the ground, and a discharging end of the flexible continuous conveying system is positioned outside the excavation roadway;
when the excavation roadway is positioned above the side wall bottom layer, a transportation road surface extending from the ground to an excavation roadway inlet is trimmed on the side wall, the feeding end of the flexible continuous transportation system is positioned in the excavation roadway, the discharging end of the flexible continuous transportation system is positioned on the transportation road surface outside the excavation roadway, and the flexible continuous transportation system is in a bending state;
the flexible continuous conveying system comprises a bidirectional self-walking device and a belt conveyor arranged on the bidirectional self-walking device, wherein the bidirectional self-walking device is used for driving the belt conveyor to move forwards and backwards in a bidirectional manner, and the belt conveyor is used for conveying materials from one end to the other end;
and after the excavation is finished, the whole flexible continuous transportation system automatically moves out of the excavation roadway.
2. The open-air highwall coal mining method according to claim 1, wherein: in the process of digging and mining, the flexible continuous conveying system synchronously moves along with the heading machine, and the whole self-moving of the flexible continuous conveying system and the coal conveying are simultaneously carried out.
3. The open-air highwall coal mining method according to claim 1, wherein: the conveying pavement rises spirally around the side wall, and after the feeding end of the flexible continuous conveying system turns to enter the excavation roadway, the included angle between the part of the flexible continuous conveying system positioned in the excavation roadway and the part positioned on the conveying pavement is an obtuse angle.
4. The open-air highwall coal mining method according to claim 1, wherein: the bidirectional self-walking device comprises a plurality of unit sections and a driving device for driving the unit body formed by each unit section to move, and the adjacent unit sections are hinged through joint bearings.
5. The open-air highwall coal mining method according to claim 1, wherein: and after the excavation and mining of the excavation roadway are finished, carrying out gangue backfill on the roadway to be filled formed by the excavation and mining, and conveying the gangue into the roadway to be filled by using a flexible continuous conveying system during gangue backfill.
6. The open-air highwall coal mining method according to claim 5, wherein: when the gangue is backfilled, the flexible continuous conveying system and the gangue throwing equipment synchronously move outwards from the roadway to be filled, and the integral self-moving of the flexible continuous conveying system and the gangue conveying are simultaneously carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111157145.9A CN113738371B (en) | 2021-09-30 | 2021-09-30 | Open-air highwall coal mining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111157145.9A CN113738371B (en) | 2021-09-30 | 2021-09-30 | Open-air highwall coal mining method |
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| Publication Number | Publication Date |
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| CN113738371A CN113738371A (en) | 2021-12-03 |
| CN113738371B true CN113738371B (en) | 2024-03-19 |
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| CN202111157145.9A Active CN113738371B (en) | 2021-09-30 | 2021-09-30 | Open-air highwall coal mining method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899976A (en) * | 2010-07-15 | 2010-12-01 | 煤炭科学研究总院太原研究院 | Continuous coal mining process method of open-pit coal mine |
| CN102889084A (en) * | 2012-09-05 | 2013-01-23 | 中国煤炭科工集团太原研究院 | Continuous mining technique for thin coal layer of opencast coal mine |
| CN104612693A (en) * | 2014-12-13 | 2015-05-13 | 中国煤炭科工集团太原研究院有限公司 | Continuous coal-mining technology for strip mine |
| CN108590660A (en) * | 2018-05-04 | 2018-09-28 | 太原科技大学 | A kind of outdoor highwall coal mining transport device and its fast transfer working face method |
| CN109915146A (en) * | 2019-03-22 | 2019-06-21 | 中国煤炭科工集团太原研究院有限公司 | A kind of long-range control highwall coalcutter highwall laneway type recovery method |
| CN111364998A (en) * | 2020-03-12 | 2020-07-03 | 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 |
| CN212317990U (en) * | 2020-03-10 | 2021-01-08 | 山东邦迈智能科技有限公司 | Comprehensive continuous coal mining system for open pit mine |
-
2021
- 2021-09-30 CN CN202111157145.9A patent/CN113738371B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899976A (en) * | 2010-07-15 | 2010-12-01 | 煤炭科学研究总院太原研究院 | Continuous coal mining process method of open-pit coal mine |
| CN102889084A (en) * | 2012-09-05 | 2013-01-23 | 中国煤炭科工集团太原研究院 | Continuous mining technique for thin coal layer of opencast coal mine |
| CN104612693A (en) * | 2014-12-13 | 2015-05-13 | 中国煤炭科工集团太原研究院有限公司 | Continuous coal-mining technology for strip mine |
| CN108590660A (en) * | 2018-05-04 | 2018-09-28 | 太原科技大学 | A kind of outdoor highwall coal mining transport device and its fast transfer working face method |
| CN109915146A (en) * | 2019-03-22 | 2019-06-21 | 中国煤炭科工集团太原研究院有限公司 | A kind of long-range control highwall coalcutter highwall laneway type recovery method |
| CN212317990U (en) * | 2020-03-10 | 2021-01-08 | 山东邦迈智能科技有限公司 | Comprehensive continuous coal mining system for open pit mine |
| CN111364998A (en) * | 2020-03-12 | 2020-07-03 | 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 |
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| CN113738371A (en) | 2021-12-03 |
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