CN110939446B - Steering method for mining area of ultra-thick inclined coal seam - Google Patents
Steering method for mining area of ultra-thick inclined coal seam Download PDFInfo
- Publication number
- CN110939446B CN110939446B CN201910687414.9A CN201910687414A CN110939446B CN 110939446 B CN110939446 B CN 110939446B CN 201910687414 A CN201910687414 A CN 201910687414A CN 110939446 B CN110939446 B CN 110939446B
- Authority
- CN
- China
- Prior art keywords
- mining
- coal
- coal seam
- working line
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005065 mining Methods 0.000 title claims abstract description 156
- 239000003245 coal Substances 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000002689 soil Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 6
- 230000008520 organization Effects 0.000 claims description 4
- 230000007774 longterm Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000007599 discharging Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- 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
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)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
A steering method for a mining area of a huge thick inclined coal seam is used in open pit coal mining. The whole mining area is divided into two parts by utilizing the working lines, the coal seams are stripped along two sides of the groove, when the coal seam of the north part is less than the coal seam of the south part, mining equipment of the coal seam of the north part is gradually carried to the working lines of the coal seam of the south part to participate in subsequent mining when the mining of the coal seam of the north part is finished first, the quantity of the mining equipment is gradually increased on the west side of the working line of the west part until the maximum quantity of the mining equipment capable of being accommodated is placed, so that the propelling speed is increased, the original straight working line is changed into an arc working line to be propelled, and finally the working line which rotates 90 degrees anticlockwise with the original working line is formed, so. The steps are simple, the inner discharging space is released earlier, the soil discharging distance is shortened, and the transportation cost is obviously reduced; and the length of the stripping working line is increased, the annual production capacity of an operating system is effectively improved, and the economic benefit of the mine is improved.
Description
Technical Field
The invention relates to a steering method for a mining area of a huge thick inclined coal seam, which is particularly suitable for the mining field in the mining process of the huge thick inclined coal seam.
Background
The open-pit coal mining cost is low, the economic benefit is obvious, but the open-pit coal mining can generate a large amount of stripping substances, if all the stripping substances are discharged to form a discharged soil field, a large amount of land can be occupied, and generally speaking, the land area occupied by the discharged soil field of ten million-ton-level open-pit coal mines is more than 40 square kilometers. Along with the development of mining, vacate interior row space in the pit, the thing that strips realizes interior row and forms interior dumping field, along with the propulsion of working line, interior dumping field is followed up gradually. According to the early construction arrangement of a coal mine, the stripping work of the first mining area of the south strip mine is close to the end sound, the upper step of the working side reaches the boundary locally, and the next step of work mainly comprises the descending coal mining and the steep side operation of the working side. After the first mining area is mined, the direction of the first mining area is changed to the second mining area, and the propelling direction is changed from the south to the north.
However, according to the production experience of the conventional surface mine, when the operation is shifted to the transition period, stripping and mining operations are simultaneously carried out in 2 mining areas, the production organization management is complex, and if the schedule of the stripping and mining engineering in the transition period is not properly arranged, the production of the surface mine is reduced and even the production is stopped because the coal mining is not continued. In the transition period, the development of the transportation system is complicated, and if the arrangement and the management are not proper, the transportation distance is increased, the transportation system is disordered, and the normal production of the strip mine is influenced. This mine, however, requires a national requirement for the completion of the production expansion during diversion, which can cause problems: contradiction between steering and energy expansion.
Disclosure of Invention
Aiming at the technical problem, the method for turning the mining area of the thick inclined coal seam is simple in step, good in using effect and capable of shortening the mining time and improving the mining efficiency.
In order to achieve the technical purpose, the steering method for the mining area of the ultra-thick inclined coal seam comprises the following steps:
step 1: dividing an open-air huge-thickness inclined coal seam area into a plurality of mining areas, and explaining the trend of the direction from north to south, the height of the north to south and the trend of the coal seam to east and the trend of the direction from west to east;
step 2: dividing the coal bed into a south area and a north area by a working line of a mining area, and describing that the coal bed of the north area is less than the coal bed of the south area, firstly, penetrating the tail end of a groove through the mining area to form a linear working line to divide the mining area into two mining areas with different areas, wherein the mining equipment for mining towards the south and the north areas is the same in quantity, when the coal bed of the north area is mined before the mining of the south area is finished, gradually conveying the mining equipment of the coal bed of the north area to the working line of the south area to participate in subsequent mining, and gradually increasing the quantity of the mining equipment on the west side of the working line of the west area until the maximum quantity of the mining equipment is placed to increase the advancing speed and simultaneously slowing down the mining operation intensity of the east section of the coal bed of the south area, so that the original linear working line is changed into an arc working line to advance, and finally enabling the west section of the coal bed of the south area to reach the pit bottom boundary of the mining area in, realizing internal drainage in advance by utilizing a goaf after the most west section reaches the boundary of the pit bottom in advance; if the areas of the coal seams are opposite in north and south, the mining identification moving direction is opposite;
and step 3: after the west section of the coal seam in the south area of the first mining area reaches the boundary, the longitudinal mining working line of the east section, which is originally pushed from north to south, is continuously pushed, the stripped objects of the east section are directly transported to an inner soil discharge field formed by a goaf through a south side, the soil discharge distance is shortened, and the horizontal mining working line is established from the east of the west section, so that the working line which rotates 90 degrees anticlockwise with the original working line is finally formed, namely the working line is arranged along the inclination of the coal seam and is pushed along the trend, therefore, the combined position of the working faces of the east and west sections is timely pushed and synchronously mined, coal pressing is avoided, and the construction of the inner soil discharge field is also not influenced;
and 4, step 4: after the first mining first-zone stripping mining work is finished, the first mining second-zone stripping mining work is carried out, the coal is pushed from the west to the east, namely the working line is arranged along the coal seam trend and pushed along the trend, and the steering work is finished completely.
The working lines are arranged along the coal seam in a leaning way and are pushed along the trend, the coal seam is divided into a plurality of steps due to the fact that the coal seam is thick, the longitudinal mining and transverse mining working lines are in production operation at the same time in the mining process of each step, and an operation cross area exists. Because the longitudinal mining working line is longer, a certain amount of coal can be reserved at the west of the working line, and then the transverse mining working line pushes the repeated part of the longitudinal mining working line in real time, so that the longitudinal mining working line can be pushed in time and synchronously mined, and the coal pressing is avoided, and the construction of an inner soil discharge field is not influenced.
When the coal seam of the area where the open pit coal mine is located is an inclined coal seam, the inclination is the north-south direction, the north-south direction of the coal seam is low, the coal seam is moved to the east-west direction, the coal seam is propelled from the west to the east, the propulsion intensity of the operation on the west side of the first mining area is increased, the speed of the two sections of the work line from the east to the west is different, the west fast propulsion of the west reaches the bottom boundary earlier to form a goaf, and the goaf is used as an inner drainage pit, because the coal seam is greatly inclined, stripping matters are particularly coated on the coal seam of the area of the inner drainage pit, the mining depth is particularly large, the west slope generates a high slope in the mining process of the coal at the bottom of the inner drainage pit, the long-term stability of the slope cannot be guaranteed, therefore, in the actual process, the coal at the bottom of the inner drainage pit needs to be completely mined out as soon, the existence time of the high slope is shortened to realize the inner drainage, and establishing a transverse mining working line on the east side of the inner pit row and continuing to push to the east.
In the step 4, the first mining first area stripping work progresses to a proper stage, and the arrangement work of the first mining second area working lines can be properly carried out in advance according to the field organization construction condition.
Has the advantages that:
1) compared with the prior art, the method has the advantages that the first-zone pit bottom boundary is reached earlier, the internal drainage space is released earlier, and the internal drainage starting time is advanced; 2) because the newly added production capacity is in the first mining area, the stripping operation of the first mining area can be completed more quickly, and the steering operation time is shortened; 3) the stripping materials in the east section are directly transported to an inner dumping site through the south side, so that dumping distance is shortened, and production cost is reduced; 4) the necessary external discharge capacity is reduced, and the occupied area of external discharge is reduced; 5) the inner row space is released in a segmented manner, so that the impact of nonuniform release of the inner row space on production is reduced; 6) the scheme of the application is that the working line is changed from a straight line to an arc line, so that the length of the stripping working line is increased, the annual production capacity of an operating system can be effectively improved, and the stripping working line is matched with the target that the mine needs to synchronously complete energy expansion during steering.
Drawings
FIG. 1 is a schematic diagram of a coal mine structure of the steering method for the mining area of the ultra-thick inclined coal seam.
FIG. 2 is a coal mining area linear working line advancing schematic diagram of the steering method for the mining area of the ultra-thick inclined coal seam.
FIG. 3 is a schematic diagram of the propulsion of the arc-shaped working line of the coal mine in the steering method of the mining area of the ultra-thick inclined coal seam.
FIG. 4 is a working line advancing schematic diagram of the mining area working line completion turning of the mining area turning method of the ultra-thick inclined coal seam.
FIG. 5 is a mining schematic diagram after a mining area working line is turned for 90 degrees by the turning method for the mining area of the ultra-thick inclined coal seam.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings
The invention discloses a mining area steering method for a thick inclined coal seam, which comprises the following steps:
as shown in fig. 1, step 1: dividing an open-air huge-thickness inclined coal seam area into a plurality of mining areas, and explaining the trend of the direction from north to south, the height of the north to south and the trend of the coal seam to east and the trend of the direction from west to east; the working lines are arranged along the coal seam in a leaning way and are pushed along the trend, the coal seam is divided into a plurality of steps due to the fact that the coal seam is thick, the longitudinal mining and transverse mining working lines are in production operation at the same time in the mining process of each step, and an operation cross area exists. Because the longitudinal mining working line is longer, a certain amount of coal can be reserved at the west of the working line, and then the transverse mining working line pushes the repeated part of the longitudinal mining working line in real time, so that the longitudinal mining working line can be pushed in time and synchronously mined, and the coal pressing is avoided, and the construction of an inner soil discharge field is not influenced;
as shown in fig. 2 and 3, step 2: dividing the coal bed into a south area and a north area by a working line of a mining area, and describing that the coal bed of the north area is less than the coal bed of the south area, firstly, penetrating the tail end of a groove through the mining area to form a linear working line to divide the mining area into two mining areas with different areas, wherein the mining equipment for mining towards the south and the north areas is the same in quantity, when the coal bed of the north area is mined before the mining of the south area is finished, gradually conveying the mining equipment of the coal bed of the north area to the working line of the south area to participate in subsequent mining, and gradually increasing the quantity of the mining equipment on the west side of the working line of the west area until the maximum quantity of the mining equipment is placed to increase the advancing speed and simultaneously slowing down the mining operation intensity of the east section of the coal bed of the south area, so that the original linear working line is changed into an arc working line to advance, and finally enabling the west section of the coal bed of the south area to reach the pit bottom boundary of the mining area in, realizing internal drainage in advance by utilizing a goaf after the most west section reaches the boundary of the pit bottom in advance; if the areas of the coal seams are opposite in north and south, the mining identification moving direction is opposite; when the coal seam of the area where the open pit coal mine is located is an inclined coal seam, the inclination is the north-south direction, the north-south direction of the coal seam is low, the coal seam is moved to the east-west direction, the coal seam is propelled from the west to the east, the propulsion intensity of the operation on the west side of the first mining area is increased, the speed of the two sections of the work line from the east to the west is different, the west fast propulsion of the west reaches the bottom boundary earlier to form a goaf, and the goaf is used as an inner drainage pit, because the coal seam is greatly inclined, stripping matters are particularly coated on the coal seam of the area of the inner drainage pit, the mining depth is particularly large, the west slope generates a high slope in the mining process of the coal at the bottom of the inner drainage pit, the long-term stability of the slope cannot be guaranteed, therefore, in the actual process, the coal at the bottom of the inner drainage pit needs to be completely mined out as soon, the existence time of the high slope is shortened to realize the inner drainage, establishing a transverse mining working line on the east side of the inner pit arrangement, and continuing to push the transverse mining working line to the east;
as shown in fig. 4, step 3: after the west section of the coal seam in the south area of the first mining area reaches the boundary, the longitudinal mining working line of the east section, which is originally pushed from north to south, is continuously pushed, the stripped objects of the east section are directly transported to an inner soil discharge field formed by a goaf through a south side, the soil discharge distance is shortened, and the horizontal mining working line is established from the east of the west section, so that the working line which rotates 90 degrees anticlockwise with the original working line is finally formed, namely the working line is arranged along the inclination of the coal seam and is pushed along the trend, therefore, the combined position of the working faces of the east and west sections is timely pushed and synchronously mined, coal pressing is avoided, and the construction of the inner soil discharge field is also not influenced;
as shown in fig. 5, step 4: after the first mining first area stripping mining work is finished, the first mining second area stripping coal mining work is carried out, the work line is pushed from west to east, namely the work line is arranged along the coal seam trend and pushed along the trend, the steering work is completely finished, the first mining first area stripping mining work is advanced to a proper stage, and the arrangement work of the first mining second area work line is properly carried out in advance according to the site organization construction condition.
Claims (4)
1. A steering method for a mining area of a huge thick inclined coal seam is characterized by comprising the following steps:
step 1: dividing an open-air huge-thickness inclined coal seam area into a plurality of mining areas, and explaining the trend of the direction from north to south, the height of the north to south and the trend of the coal seam to east by advancing from west to east;
step 2: dividing the coal bed into two regions of south and north by a working line of a first mining region, and describing that the coal bed of the north region is less than that of the south region, firstly, penetrating the tail end of a groove through the whole first mining region to form a linear working line to divide the first mining region into two mining regions with different areas, wherein the mining devices for mining towards the south and the north are the same in number during mining, when the mining of the coal bed of the north region is finished before the mining of the coal bed of the south region is finished, the mining devices for the coal bed of the north region are gradually transported to the working line of the coal bed of the south region to participate in subsequent mining, and in the subsequent mining process of the coal bed of the south region, the number of the mining devices is gradually increased on the west-most side of the working line of the west section until the maximum amount is placed to accommodate the mining devices so as to increase the propelling speed, and simultaneously, the mining operation intensity of the east section of the, finally, enabling the most western section of the coal seam in the south region to reach the pit bottom boundary of the first mining area in advance, and utilizing the goaf after the most western section reaches the pit bottom boundary in advance to realize internal drainage in advance; if the size of the coal seam is opposite in north and south, the movement direction of the mining equipment is opposite;
and step 3: after the west section of the coal seam in the south area of the first mining area reaches the boundary, the longitudinal mining working line of the east section, which is originally pushed from north to south, is continuously pushed, the stripped objects of the east section are directly transported to an inner soil discharge field formed by a goaf through a south side, the soil discharge distance is shortened, and the horizontal mining working line is established from the east of the west section, so that the working line which rotates 90 degrees anticlockwise with the original working line is finally formed, namely the working line is arranged along the inclination of the coal seam and is pushed along the trend, therefore, the combined position of the working faces of the east and west sections is timely pushed and synchronously mined, coal pressing is avoided, and the construction of the inner soil discharge field is also not influenced;
and 4, step 4: after the first mining area stripping mining work is finished, the second mining area stripping coal mining work is carried out, the work is pushed from the west to the east, namely the work line is arranged along the coal seam trend and pushed along the trend, and the steering work is finished completely.
2. The method for turning the mining area of the ultra-thick inclined coal seam according to claim 1, wherein the method comprises the following steps: the working line is arranged along the trend of the coal bed and is pushed along the trend, the coal bed is extremely thick, the coal bed is divided into a plurality of steps, longitudinal mining and transverse mining working lines are simultaneously used for production operation in the process of mining each step, an operation cross area exists, a certain coal amount can be reserved at the west part of the working line due to the long length of the longitudinal mining working line, then the transverse mining working line pushes repeated parts of the longitudinal mining working line in real time, the transverse mining working line can be pushed in time, synchronous mining is realized, coal pressing is avoided, and the construction of an inner soil discharge field is not influenced.
3. The method for turning the mining area of the ultra-thick inclined coal seam according to claim 1, wherein: when the coal seam of the area where the open pit coal mine is located is an inclined coal seam, the inclination is in the north-south direction, the north-south direction of the coal seam is low, the coal seam is in the east-west direction, the coal seam is propelled from the west to the east, the propulsion strength of the operation on the west side of the first mining area is increased, the speed of the two sections of the work line in the east-west direction and the west-west direction is different, the west fast propulsion can reach the bottom boundary earlier to form a goaf, the goaf is used as an inner drainage pit, due to the fact that the coal seam is greatly inclined, stripping matters are particularly coated on the coal seam of the area of the inner drainage pit, the mining depth is particularly large, the west slope generates a high slope in the mining process of the coal at the bottom of the inner drainage pit, the long-term stability of the slope cannot be guaranteed, therefore, in the actual process, the coal at the bottom of the inner drainage pit needs to be mined all mined, the existence time of the high slope is shortened, and establishing a transverse mining working line on the east side of the inner pit row and continuing to push to the east.
4. The method for turning the mining area of the ultra-thick inclined coal seam according to claim 1, wherein: in the step 4, the first mining first area stripping work progresses to a proper stage, and the arrangement work of the first mining second area working lines can be properly carried out in advance according to the field organization construction condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687414.9A CN110939446B (en) | 2019-07-29 | 2019-07-29 | Steering method for mining area of ultra-thick inclined coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910687414.9A CN110939446B (en) | 2019-07-29 | 2019-07-29 | Steering method for mining area of ultra-thick inclined coal seam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110939446A CN110939446A (en) | 2020-03-31 |
| CN110939446B true CN110939446B (en) | 2020-11-03 |
Family
ID=69905834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910687414.9A Active CN110939446B (en) | 2019-07-29 | 2019-07-29 | Steering method for mining area of ultra-thick inclined coal seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110939446B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647946A (en) * | 2020-12-24 | 2021-04-13 | 重庆市能源投资集团科技有限责任公司 | Near-horizontal coal seam steering mining method |
| CN114508353B (en) * | 2022-01-29 | 2022-12-09 | 中国矿业大学 | Initial rapid construction method for strip mine with inclined coal seam |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4286822A (en) * | 1979-12-14 | 1981-09-01 | Conoco, Inc. | Underspoil slurry haulage |
| CN1162057A (en) * | 1996-04-06 | 1997-10-15 | 中国矿业大学 | L-shaped strip area working face vertical dead axle steering mode |
| CN103334754A (en) * | 2013-07-12 | 2013-10-02 | 中国矿业大学 | Steering mode and mining method during steering period of adjacent strip regions of sub-horizontal deposit |
| CN103670419A (en) * | 2013-11-20 | 2014-03-26 | 中国矿业大学 | Run-through inner dumping method between mining areas for opencast coal mine during period of diversion |
| CN103953339A (en) * | 2014-04-29 | 2014-07-30 | 西安科技大学 | Coal mining machine for lump coal mining and coal mining method |
| RU2540735C1 (en) * | 2013-09-10 | 2015-02-10 | АКЦИОНЕРНАЯ КОМПАНИЯ "АЛРОСА" (открытое акционерное общество) (АК "АЛРОСА" ОАО)) | Method for completion of open pit with two closely located ore bodies |
| RU2553672C2 (en) * | 2013-08-01 | 2015-06-20 | Федеральное государственное бюджетное учреждение науки Институт горного дела Уральского отделения Российской академии наук (ИГД УрО РАН) | Method of opened development of long steep dipping fields with internal dumping |
| CN104806247A (en) * | 2015-04-28 | 2015-07-29 | 中国矿业大学 | Transport method of building longitudinal composite bridge in middle of strip mine stope |
| CN105927226A (en) * | 2016-04-21 | 2016-09-07 | 西北矿冶研究院 | Medium-length hole ore-breaking continuous sectional horizontal filling mining method |
| CN107687342A (en) * | 2017-08-21 | 2018-02-13 | 中国矿业大学 | A kind of open coal mine draws bucket shovel active line segmentation alternative expression exploiting field forward method |
| CN109630121A (en) * | 2019-01-30 | 2019-04-16 | 新疆天池能源有限责任公司 | A kind of opencut exploiting field steering development haulage system |
-
2019
- 2019-07-29 CN CN201910687414.9A patent/CN110939446B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4286822A (en) * | 1979-12-14 | 1981-09-01 | Conoco, Inc. | Underspoil slurry haulage |
| CN1162057A (en) * | 1996-04-06 | 1997-10-15 | 中国矿业大学 | L-shaped strip area working face vertical dead axle steering mode |
| CN103334754A (en) * | 2013-07-12 | 2013-10-02 | 中国矿业大学 | Steering mode and mining method during steering period of adjacent strip regions of sub-horizontal deposit |
| RU2553672C2 (en) * | 2013-08-01 | 2015-06-20 | Федеральное государственное бюджетное учреждение науки Институт горного дела Уральского отделения Российской академии наук (ИГД УрО РАН) | Method of opened development of long steep dipping fields with internal dumping |
| RU2540735C1 (en) * | 2013-09-10 | 2015-02-10 | АКЦИОНЕРНАЯ КОМПАНИЯ "АЛРОСА" (открытое акционерное общество) (АК "АЛРОСА" ОАО)) | Method for completion of open pit with two closely located ore bodies |
| CN103670419A (en) * | 2013-11-20 | 2014-03-26 | 中国矿业大学 | Run-through inner dumping method between mining areas for opencast coal mine during period of diversion |
| CN103953339A (en) * | 2014-04-29 | 2014-07-30 | 西安科技大学 | Coal mining machine for lump coal mining and coal mining method |
| CN104806247A (en) * | 2015-04-28 | 2015-07-29 | 中国矿业大学 | Transport method of building longitudinal composite bridge in middle of strip mine stope |
| CN105927226A (en) * | 2016-04-21 | 2016-09-07 | 西北矿冶研究院 | Medium-length hole ore-breaking continuous sectional horizontal filling mining method |
| CN107687342A (en) * | 2017-08-21 | 2018-02-13 | 中国矿业大学 | A kind of open coal mine draws bucket shovel active line segmentation alternative expression exploiting field forward method |
| CN109630121A (en) * | 2019-01-30 | 2019-04-16 | 新疆天池能源有限责任公司 | A kind of opencut exploiting field steering development haulage system |
Non-Patent Citations (1)
| Title |
|---|
| 《新疆天池能源南露天煤矿转向方式优化研究》;王韶辉等;《煤炭工程》;20190531;第51卷(第5期);第60-64页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110939446A (en) | 2020-03-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016206618A1 (en) | Longwall mine construction method n00 | |
| CN110939446B (en) | Steering method for mining area of ultra-thick inclined coal seam | |
| CN107829742B (en) | Caving-filling-open stope-caving mining method | |
| CN106121648A (en) | Sublevel open stoping chassis route ore drawing subsequent filling mining method | |
| US11994027B2 (en) | Dendritic reverse underground mining method for thin coal seam at end slope of strip mine | |
| CN207813624U (en) | A kind of future small coal pillar comprehensive mechanical coal mining supporting construction | |
| CN109630112B (en) | N00 mining method of cut top filling | |
| CN113756812B (en) | Method for recycling open pit end slope coal under pressure by partition mining | |
| CN111255456B (en) | Mine advancing type filling roadway mining method | |
| CN108425674B (en) | A kind of coal-mining method of open coal mine end side coal | |
| CN108708724B (en) | A kind of consolidated fill recycling Wangeviry coal column coal-mining method | |
| CN111364994B (en) | Fully-mechanized mining-to-filling continuous propulsion collaborative mining method | |
| CN106761759B (en) | A kind of coal-mining method of open coal mine | |
| CN110671148B (en) | One-hole multi-open ground grouting filling method above coal pillar | |
| CN113530541B (en) | Open stope subsequent filling mining method for sectioned rock drilling stage of thick and large ore body | |
| CN114508353B (en) | Initial rapid construction method for strip mine with inclined coal seam | |
| CN113530542B (en) | Open stoping subsequent filling mining method for thick and large ore body wedge-shaped top column in sectional rock drilling stage | |
| CN112963150A (en) | Steering method for super-huge open coal mine mining area produced in full-mechanized mode | |
| CN114183140A (en) | Mining and filling method for coal pillar in advanced replacement section | |
| CN113565508A (en) | Open stope subsequent filling mining method for V-shaped top column subsection rock drilling stage of medium-thickness ore body | |
| CN105545310A (en) | Coal mining method utilizing dragline cycle operation | |
| CN105781553A (en) | Gentle wall milling method at parallel milling area end under complex geological structure | |
| CN114483037B (en) | Steep dip thin ore vein up-down medium-length hole combined stepped low dilution mining method | |
| CN112647946A (en) | Near-horizontal coal seam steering mining method | |
| CN111946393B (en) | Coal mining system and method for overlong solid filling working face |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |