CN112253121A - Strip mine transportation method - Google Patents
Strip mine transportation method Download PDFInfo
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- CN112253121A CN112253121A CN202011127300.8A CN202011127300A CN112253121A CN 112253121 A CN112253121 A CN 112253121A CN 202011127300 A CN202011127300 A CN 202011127300A CN 112253121 A CN112253121 A CN 112253121A
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- conveyor
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- ditch
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The application discloses a strip mine transportation method, which comprises the steps of mining strip mines in a subarea mode, wherein the subarea mode comprises a first mining area and a second mining area; one side of the first mining area close to the second mining area is exploited in advance to form a sectional ditch; when the length of the open section ditch reaches a preset length, a crushing station moving along with a stope working line is arranged in the open section ditch; arranging a first conveyor on one side of the soil discharge field in the first mining area, which is close to the second mining area; arranging a second conveyor between the first conveyor and the crushing station; the mined ore materials are all crushed by a crushing station; and the crushed mineral aggregate is conveyed out through the second conveyor and the first conveyor. Utilize this application not only can optimize stope inner space relation, increase the interval in broken station and interior earth discharge field, the service time of extension broken station, the frequency is established in the removal that reduces broken station, improves conveying efficiency, but also can avoid pressing the development conveying system of exhibition end group, reduces the end group load, is favorable to the improvement of side slope stability, can also reduce the freight distance simultaneously, reduces cost of transportation.
Description
Technical Field
The application relates to the technical field of coal mines, in particular to a strip mine transportation method.
Background
At present, after open pit coal mining, the open pit coal is firstly crushed in a crushing station and then the coal is transported out. The inventor discovers that the crushing station is greatly influenced by the inner row working line and needs to be frequently moved along with the inner row working line, so that the transportation efficiency is low.
Disclosure of Invention
In view of the above, the present application provides a method for transporting an open pit mine to solve the above technical problems.
The application provides a strip mine transportation method, which comprises the following steps: mining the strip mine in a subarea mode, wherein the subarea mode comprises a first mining area and a second mining area; one side of the first mining area close to the second mining area is exploited in advance to form a sectional ditch; when the length of the open section ditch reaches a preset length, arranging a crushing station which moves along with a stope working line in the open section ditch; arranging a first conveyor on one side of the soil discharge field in the first mining area, which is close to the second mining area; arranging a second conveyor between the first conveyor and the crushing station; the mined ore material is completely crushed by the crushing station; and the crushed mineral aggregate is conveyed out through the second conveyor and the first conveyor.
Optionally, the laying of the first conveyor on a side of the spoil area within the first panel adjacent to the second panel comprises: when the first mining area reaches the inner discharge condition, discharging soil; when the soil discharging working line is pushed, reserving a soil discharging ditch at one side of the inner soil discharging field close to the second mining area, wherein the soil discharging ditch and the excavating ditch are collinear and are both positioned between the first mining area and the second mining area; and a first conveyor is arranged at one end of the soil discharge ditch far away from the opening ditch.
Optionally, when the soil discharging working line is pushed, a soil discharging ditch is reserved on one side of the inner soil discharging yard close to the second mining area, and then the method further comprises: and building a middle dumping bridge above the second conveyor, wherein the middle dumping bridge is connected with the stope end slope and a dumping field in the first mining area.
Optionally, the mined ore material is completely crushed by the crushing station, and before further comprising: when the stripping working line reaches the boundary line of the earth surface of the first mining area, the crushing station stops moving forwards, and the advancing direction of the stope is changed into the advancing direction from the first mining area to the second mining area; when the stripping working line reaches the boundary line of the surface of the two mining areas, the advancing direction of the stope is changed to be opposite to the advancing direction of the first mining area.
Optionally, the first conveyor is arranged on one side of the earth discharge yard close to the second mining area in the first mining area, and the method further comprises the following steps: the foundation in the area where the first conveyor is deployed is compacted and a retaining wall is built in the slope limp of that area.
Optionally, the predetermined length of the trench bottom of the soil discharge trench is the length of the first mining area minus the horizontal projection of the stope working slope and the inner soil discharge field working slope, and the trench bottom width of the soil discharge trench is equal to the trench bottom width of the excavation trench.
Optionally, the mined ore material is completely crushed by the crushing station, and before further comprising: building a discharging platform in the open trench, wherein the discharging platform moves along with the crushing station; and on the discharging platform, discharging all the mined ore material into a crushing station.
Optionally, the discharge platform is located between adjacent intermediate dump bridges.
Optionally, the middle dumping bridge corresponds to the second conveyor one by one and is located above the middle position of the second conveyor in the conveying direction.
Optionally, the method further comprises: and a third conveyor is arranged on the ground surface, and the mineral aggregate conveyed out by the second conveyor and the first conveyor is conveyed to a concentrating mill by the third conveyor.
The application provides a strip mine transportation method forms the open pit through one side that the first mining area of advance mining is close to two mining areas, lay the crushing station in one of open pit keeping away from interior dump one, broken mineral aggregate is through the second conveyer, first conveyer transports, not only can optimize the interior spatial relationship of stope, increase the interval of crushing station and interior dump, the service time of extension crushing station, reduce the removal of crushing station and establish the frequency, and the efficiency of transportation is improved, but also can avoid the development transportation system who expands the end group, reduce the end group load, be favorable to the improvement of side slope stability, can also reduce the freight distance simultaneously, and the cost of transportation is reduced.
Drawings
Fig. 1 is a flow chart of a method of strip mine transportation of the present application.
Fig. 2 is a schematic illustration of mining of the surface mine transportation method of the present application.
Detailed Description
The technical solutions of the present application are described in detail below with reference to the accompanying drawings and specific embodiments. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Fig. 1 shows a flow diagram of a method of strip mine transportation according to the present application, and fig. 2 shows a mining schematic of a method of strip mine transportation according to the present application, as shown in fig. 1-2, which provides a method of strip mine transportation comprising:
s100, mining the strip mine in a subarea mode, wherein the subarea mode comprises a first mining area and a second mining area;
and the dividing lines of the first mining area and the second mining area are parallel to the propelling directions of the first mining area and the second mining area.
S200, forming a sectional trench on one side of the advanced mining first mining area close to the second mining area;
and stripping the stripping objects 3 on one side of the first mining area close to the second mining area in advance, and mining the coal bed below the stripping objects 3 in advance to form a cut trench 4. The open-section trench 4 is located between the first mining area and the second mining area.
The rest part of the first mining area and the second mining area are normally mined, and the propelling directions of the first mining area and the second mining area can be the same or different.
As shown in fig. 2, one side of the open-section trench 4 is empty, one side is a combined step working slope 301, one side is a stope end slope 302 of a first mining area, one side is an open-section trench end slope 303, and the bottom of the trench is a coal seam floor 304.
S300, when the length of the open section ditch reaches a preset length, arranging a crushing station moving along a stope working line in the open section ditch;
in this embodiment, the predetermined length may be 50-100m, and the crushing station 6 may be a semi-mobile crushing station.
S400, arranging a first conveyor on one side, close to the second mining area, of the soil discharge yard in the first mining area;
the first conveyor 1 is arranged at an incline for lifting mineral material (e.g. coal) from the pit bottom to the surface. In the present embodiment, the first conveyor 1 may be a lifting belt conveyor.
S500, arranging a second conveyor between the first conveyor and the crushing station;
a second conveyor 2 is arranged between the first conveyor 1 and the crushing station 6 for horizontal transport of mineral material. The second conveyor 2 may employ a horizontal belt conveyor.
With the progressive advance of the crushing station 6, the number of second conveyors 2 between the first conveyor 1 and the crushing station 6 increases. The newly added conveying length of the second conveyor 2, i.e. the increased service length of the crushing station 6.
The length of the open section ditch 4 can be set according to the soil discharge space of the first mining area, the transportation cost and the movement limit of the crushing station 6. The width of the open trench 4 is the sum of the width of the horizontal belt conveyor and the width of two single lanes of the open pit coal mine.
S600, crushing all mined ore materials by a crushing station;
and all the mineral aggregates mined from the first mining area and the second mining area are conveyed to a crushing station 6 for crushing.
S700, conveying the crushed ore materials out through a second conveyor and the first conveyor.
And the crushed ore materials are all conveyed out through the second conveyor 2 and the first conveyor 1 in sequence.
The application provides a strip mine transportation method forms the open pit through one side that the first mining area of advance mining is close to two mining areas, lay the crushing station in one of open pit keeping away from interior dump one, broken mineral aggregate is through the second conveyer, first conveyer transports, not only can optimize the interior spatial relationship of stope, increase the interval of crushing station and interior dump, the service time of extension crushing station, reduce the removal of crushing station and establish the frequency, and the efficiency of transportation is improved, but also can avoid the development transportation system who expands the end group, reduce the end group load, be favorable to the improvement of side slope stability, can also reduce the freight distance simultaneously, and the cost of transportation is reduced.
Further, S400, the arranging the first conveyor on one side of the refuse dump in the first mining area, which is close to the second mining area, includes:
s410, when the first mining area reaches the inner drainage condition, performing soil drainage;
in the embodiment, when the width of the pit bottom of the stope reaches 50-100m, the soil is discharged to the soil discharge field in the first stope area. Wherein the width direction is consistent with the advancing direction of the first mining area.
S420, when the soil discharging working line is pushed, reserving a soil discharging ditch at one side of the inner soil discharging field close to the second mining area;
when the soil is discharged, the soil is not discharged at first on one side of the inner soil discharge field close to the two mining areas, and when the soil discharge working line moves forwards along the propelling direction, a soil discharge ditch 8 is naturally formed between the inner soil discharge field and the two mining areas. The bottom of the soil discharge ditch 8 is also a coal seam floor.
As shown in fig. 2, the gutter 8 is collinear with the extraction trench 4 and both are located between the first mining area and the second mining area. The second conveyor 2 is also arranged on the bottom of the soil discharge ditch 8.
The preset length of the trench bottom of the soil discharge trench 8 is the length of a first mining area minus the horizontal projection of a stope working slope and an inner soil discharge field working slope, and the trench bottom width of the soil discharge trench 8 is equal to the trench bottom width of the excavation trench 4.
And S430, arranging a first conveyor at one end of the soil discharge trench far away from the segmental trench.
By reserving the soil discharge ditch 8, the distance between the inner soil discharge field and the crushing station 6 can be further increased, and the service length can be prolonged.
In one embodiment, when the discharging line is pushed, a discharging trench is reserved on one side of the inner discharging field close to the second mining area, and then the method further comprises the following steps:
and S425, building a middle dumping bridge above the second conveyor, wherein the middle dumping bridge is connected with the stope end wall and a dumping field in the first mining area.
The middle dumping bridges 9 correspond to the second conveyors 2 one by one and are positioned above the middle positions of the conveying directions of the second conveyors 2. A culvert 10 is provided below the middle dumping bridge 9, and the second conveyor 2 passes through the culvert 10.
Through setting up middle refuse dump bridge 9, can make things convenient for the intercommunication between stope end group and the refuse dump in the first mining area, reduce the freight distance of stope end group and the refuse dump in the first mining area.
Further, S600, the mining mineral aggregate is completely crushed by the crushing station, and the method further includes:
s520, when the stripping working line reaches the boundary line of the earth surface of the first mining area, the crushing station stops moving forwards, and the advancing direction of the stope is changed into the advancing direction from the first mining area to the second mining area;
when the stripping working line coincides with the boundary line of the surface of the first mining area, the crushing station 6 is always positioned at the end slope of the stope during the steering period until the stope steering operation is completed. Wherein, the boundary line of the ground surface is the intersection line of the step side wall of the open pit and the ground surface when the open pit mining is finished.
And S540, when the stripping working line reaches the boundary line of the surface of the second mining area, changing the advancing direction of the stope to be opposite to the advancing direction of the first mining area.
When the soil discharge yard in the second mining area is about to cover the crushing station 6, the crushing station 6 is moved. Each time the crushing station 6 is displaced, the second conveyor 2, which is the same length as the distance displaced, is removed accordingly until the extraction of the second panel is completed.
The mining is turned from the first mining area to the second mining area, the mining is propelled along the direction opposite to the propelling direction of the first mining area, the one-time arrangement can be realized, the mining is at least carried out twice, the moving frequency of the crushing station 6 is further reduced, and the transportation efficiency is improved.
In one embodiment, S400, a first conveyor is arranged on a side of the earth discharge near the second panel in the first panel, and the method further includes:
s350, compacting the foundation of the area where the first conveyor is arranged, and building a retaining wall at the side slope lameness position of the area to ensure the arrangement firmness of the first conveyor and the transportation continuity.
Optionally, S600, the mined ore material is all crushed by the crushing station, and the method further includes:
building a discharging platform in the open trench, wherein the discharging platform moves along with the crushing station;
the discharging platform 5 is positioned at the middle lower part of the stope end slope between two adjacent middle discharging bridges 9.
And S320, unloading all the mined ore materials into a crushing station on the unloading platform. .
Through setting up on platform 5 of unloading, can make things convenient for the emission of mineral aggregate, provide conveying efficiency.
In one particular embodiment, the method of open pit mine transportation further comprises: and a third conveyor 701 is arranged on the ground surface, is conveyed out by the second conveyor and the first conveyor and is conveyed to the concentrating mill 7 by the third conveyor.
In this embodiment, the third conveyor 701 may be a horizontal belt conveyor, and the head of the first conveyor 1 overlaps the tail of the third conveyor 701.
By providing the third conveyor 701, it is possible to facilitate the transport of the mineral aggregate to the mill 7. In this embodiment, the mineral aggregate may be coal, and the concentrating mill may be a coal preparation mill.
Preferably, as shown in fig. 2, the first conveyor 1, the second conveyor 2, the crushing station 6, the third conveyor 701, and the coal preparation plant 701 are connected in series, which may form a semi-continuous mining process of a single bucket excavator-truck-semi-fixed crushing station.
The technical solutions of the present application are described in detail with reference to specific embodiments, which are used to help understand the ideas of the present application. The derivation and modification made by the person skilled in the art on the basis of the specific embodiment of the present application also belong to the protection scope of the present application.
Claims (10)
1. A method of transporting a strip mine, comprising:
mining the strip mine in a subarea mode, wherein the subarea mode comprises a first mining area and a second mining area;
one side of the first mining area close to the second mining area is exploited in advance to form a sectional ditch;
when the length of the open section ditch reaches a preset length, arranging a crushing station which moves along with a stope working line in the open section ditch;
arranging a first conveyor on one side of the soil discharge field in the first mining area, which is close to the second mining area;
arranging a second conveyor between the first conveyor and the crushing station;
the mined ore material is completely crushed by the crushing station;
and the crushed mineral aggregate is conveyed out through the second conveyor and the first conveyor.
2. The method of transporting a surface mine of claim 1, wherein positioning a first conveyor on a side of the spoil area adjacent the second panel in the first panel comprises:
when the first mining area reaches the inner discharge condition, discharging soil;
when the soil discharging working line is pushed, reserving a soil discharging ditch at one side of the inner soil discharging field close to the second mining area, wherein the soil discharging ditch and the excavating ditch are collinear and are both positioned between the first mining area and the second mining area;
and a first conveyor is arranged at one end of the soil discharge ditch far away from the opening ditch.
3. The method of transporting an open pit mine according to claim 2, wherein when the discharging line is advanced, a discharging trench is left in the inner dump on a side thereof adjacent to the secondary mining area, and thereafter further comprising:
and building a middle dumping bridge above the second conveyor, wherein the middle dumping bridge is connected with the stope end slope and a dumping field in the first mining area.
4. A method of transporting a surface mine according to claim 3 wherein the mined ore material is completely crushed by the crushing station, and further comprising:
when the stripping working line reaches the boundary line of the earth surface of the first mining area, the crushing station stops moving forwards, and the advancing direction of the stope is changed into the advancing direction from the first mining area to the second mining area;
when the stripping working line reaches the boundary line of the surface of the two mining areas, the advancing direction of the stope is changed to be opposite to the advancing direction of the first mining area.
5. The method of transporting a surface mine of claim 4, wherein the positioning of the first conveyor on a side of the spoil area adjacent the second panel in the first panel further comprises:
the foundation in the area where the first conveyor is deployed is compacted and a retaining wall is built in the slope limp of that area.
6. The method of claim 5, wherein the predetermined length of the trench bottom of the trench is a first stope length minus a horizontal projection of the stope working highwall and the inner pit working highwall, and wherein the trench bottom width of the trench is equal to the trench bottom width of the cut trench.
7. A method of transporting a surface mine according to claim 3 wherein the mined ore material is completely crushed by the crushing station, and further comprising:
building a discharging platform in the open trench, wherein the discharging platform moves along with the crushing station;
and on the discharging platform, discharging all the mined ore material into a crushing station.
8. The method of transporting an open pit mine according to claim 7, wherein the discharge platform is located between adjacent intermediate dumping bridges.
9. A method of transporting an open pit mine as claimed in claim 3, wherein the intermediate dumping bridges are in one-to-one correspondence with the second conveyors and are located above the intermediate positions in the direction of conveyance of the second conveyors.
10. A method of transporting an open pit mine according to any one of claims 1 to 9, further comprising: and a third conveyor is arranged on the ground surface, and the mineral aggregate conveyed out by the second conveyor and the first conveyor is conveyed to a concentrating mill by the third conveyor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011127300.8A CN112253121B (en) | 2020-10-20 | 2020-10-20 | Strip mine transportation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011127300.8A CN112253121B (en) | 2020-10-20 | 2020-10-20 | Strip mine transportation method |
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| CN112253121A true CN112253121A (en) | 2021-01-22 |
| CN112253121B CN112253121B (en) | 2022-12-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320298A (en) * | 2022-01-05 | 2022-04-12 | 国家能源集团国源电力有限公司 | Coal mining method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106194189A (en) * | 2016-07-30 | 2016-12-07 | 肖双双 | A kind of mining sequence of the long narrow opencut of inclined seam |
| CN108716402A (en) * | 2018-05-21 | 2018-10-30 | 中国矿业大学 | A kind of Semicontinuous Technology in Surface Coal Mines intermediate axle arrangement |
| CN110206543A (en) * | 2019-06-13 | 2019-09-06 | 中国神华能源股份有限公司 | Open coal mine transportation resources |
| CN110318759A (en) * | 2019-08-09 | 2019-10-11 | 辽宁工程技术大学 | A kind of deep is horizontal to adopt the vertical inclined seam surface mining method adopted of superficial part |
| CN111022054A (en) * | 2019-12-12 | 2020-04-17 | 神华准格尔能源有限责任公司 | Adjacent equidirectional asynchronous mining open pit and mining method thereof |
-
2020
- 2020-10-20 CN CN202011127300.8A patent/CN112253121B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106194189A (en) * | 2016-07-30 | 2016-12-07 | 肖双双 | A kind of mining sequence of the long narrow opencut of inclined seam |
| CN108716402A (en) * | 2018-05-21 | 2018-10-30 | 中国矿业大学 | A kind of Semicontinuous Technology in Surface Coal Mines intermediate axle arrangement |
| CN110206543A (en) * | 2019-06-13 | 2019-09-06 | 中国神华能源股份有限公司 | Open coal mine transportation resources |
| CN110318759A (en) * | 2019-08-09 | 2019-10-11 | 辽宁工程技术大学 | A kind of deep is horizontal to adopt the vertical inclined seam surface mining method adopted of superficial part |
| CN111022054A (en) * | 2019-12-12 | 2020-04-17 | 神华准格尔能源有限责任公司 | Adjacent equidirectional asynchronous mining open pit and mining method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320298A (en) * | 2022-01-05 | 2022-04-12 | 国家能源集团国源电力有限公司 | Coal mining method |
| CN114320298B (en) * | 2022-01-05 | 2024-03-01 | 国家能源集团国源电力有限公司 | Coal mining method |
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