CN103174427B - Method for exploiting downward deepening section of anticlinal part of opencast coal mine - Google Patents
Method for exploiting downward deepening section of anticlinal part of opencast coal mine Download PDFInfo
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- CN103174427B CN103174427B CN201310119305.XA CN201310119305A CN103174427B CN 103174427 B CN103174427 B CN 103174427B CN 201310119305 A CN201310119305 A CN 201310119305A CN 103174427 B CN103174427 B CN 103174427B
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Abstract
The invention provides a method for exploiting a downward deepening section of an anticlinal part of an opencast coal mine, belongs to the technical field of exploitation of the opencast coal mine, and mainly solves the problems that normal removal cannot be realized due to sharp descending of a pit bottom coal bed in an internal waste dump and peeling transportation equipment cannot directly reach the internal waste dump through a bottom plate of the pit bottom coal bed. The method is characterized by comprising the following steps of: (1) breaking the bottom plate (5) of the pit bottom coal bed; (2) bridging a top plate of the coal bed; (3) paving a connection ramp by using removed materials; and (4) transporting peeled materials of a stope to the internal waste dump (7) by using a new bridging end slope road (4), a temporary road and a ramp (2). After a pit bottom is propelled by a certain distance, the steps (1) to (4) are repeatedly executed at a certain position far away from a breaking area (6) of the previous coal bed bottom plate until coal beds in the downward deepening section of the anticlinal part of the opencast coal mine are completely exploited, and horizontal exploitation is restored.
Description
Technical field
The invention belongs to Opencut coal mine mining technical field, be specifically related to open coal mine anticline place downward deepening section recovery method.
Background technology
Nearly horizontal open coal mine is when realizing row normally, and stope is respectively adopted stripping square position level and normally advanced, and peels off material and generally helps road to dump to internal dumping through end.And when meeting with complex geological condition, deepening section coal seam as downward in anticline place sharply declines, hole ground coal inclination layer is comparatively large, peels off that material (loose media) cannot keep stablizing in the case, easily landing, namely open coal mine cannot realize normal in row.
Internal dumping cannot realize because hole ground coal layer sharply declines normally dumping, peel off transporting equipment simultaneously also cannot directly arrive internal dumping by hole end seat earth, the transport routes which results in new end side road and roof bridging formation cannot realize normally getting in touch with internal dumping, and namely peeling off material cannot through newly holding side road to dump to internal dumping.
Summary of the invention
The object of the invention is to solve prior art Problems existing, open coal mine anticline place downward deepening section recovery method is provided.
The present invention solves the problems of the technologies described above the technical scheme taked to be:
Open coal mine anticline place downward deepening section recovery method, is characterized in comprising the steps:
1) broken hole end seat earth
The position of the downward deepening section in colliery anticline place section start distance end side certain distance, adopts away seat earth material at the bottom of hole downwards, forms seat earth and abolish region in the open; Take material away the degree of depth reach whole anticline place downward deepening segment length some/height corresponding to a place;
2) roof is put up a bridge
Set up new bridging end at the bottom of hole after seat earth is abolished and between the roof of corresponding height and help road;
3) connection ramp is laid
Stope peeled off material through new end side road to dump to seat earth and abolish region, and lay the temporary road and ramp that are connected with internal dumping; The depth and broadness that the gradient in described ramp abolishes region by the seat earth in step 1) determines; Determine thus described some/the concrete numerical value of mono-;
4) transport stope and peel off material
By new bridging end side road, temporary road and ramp, stope is peeled off material and be transported to internal dumping;
After the end, hole, advances a segment distance and end side possesses the new bridging end side road conditions of formation, region certain distance is being abolished apart from last seat earth, repeat step 1) to 4) set up next end side road of putting up a bridge, utilize and dump material and lay temporary road and ramp, and transport stope and peel off material; Wherein in step 1), seat earth material at the bottom of hole is adopted away, form the degree of depth that seat earth abolishes region with the height of internal dumping for benchmark, the degree of depth basis of abolishing region at last seat earth increases progressively whole anticline place downward deepening segment length some/mono-corresponding to vertical height;
Repetition step 1) to 4 like this) until the coal seam full extraction of open coal mine anticline place downward deepening section is complete, when the time comes, row can recover normal, stope is peeled off material and directly can be dumped to internal dumping respective horizontal through end side road, namely recovers horizon mining.
The present invention compared with prior art, has following beneficial effect:
Because the present invention takes brokenly part hole end seat earth, achieve the normal contact of new end side road and internal dumping, achieve the target shortening and dump haul distance and ensure transportation safety.
Accompanying drawing explanation
Fig. 1 is stope top view of the present invention;
Fig. 2 be in Fig. 1 A-A to sectional view;
Fig. 3 be in Fig. 1 B-B to sectional view.
In figure: 1-coal seam; 2-temporary road and ramp; 3-roof; 4-end side road of putting up a bridge; 5-seat earth; 6-seat earth abolishes region; 7-internal dumping.
Detailed description of the invention
Open coal mine anticline place downward deepening section recovery method, is characterized in comprising the steps:
1) broken hole end seat earth 5
As shown in Figure 1, the position of the downward deepening section in colliery anticline place section start distance end side certain distance, adopts away seat earth at the bottom of hole 5 material downwards, forms seat earth and abolish region 6 in the open; Take material away the degree of depth reach whole anticline place downward deepening segment length some/height corresponding to a place;
2) roof is put up a bridge
As depicted in figs. 1 and 2, set up new bridging end at the bottom of the hole after seat earth 5 is abolished and between the roof 3 of corresponding height and help road 4;
3) connection ramp is laid
As shown in Figures 2 and 3, stope peeled off material through new end side road and dump and abolish region 6 to seat earth, lay the temporary road and ramp 2 that are connected with internal dumping 7; The depth and broadness that the gradient in described ramp abolishes region 6 by the seat earth in step 1) determines; Determine thus described some/the concrete numerical value of mono-;
4) transport stope and peel off material
By new bridging end side road 4, temporary road and ramp 2, stope is peeled off material and be transported to internal dumping 7;
Treat that the end, hole advances a segment distance, and after holding side to possess new bridging end side road 4 condition of formation, region 6 certain distance is being abolished apart from last seat earth, repeat step 1) to 4) set up next end side road 4 of putting up a bridge, utilization dumps material and lays temporary road and ramp 2, and transport stope stripping material, wherein in step 1), seat earth material at the bottom of hole is adopted away, form the degree of depth that seat earth abolishes region 6 with the height of internal dumping 7 for benchmark, the degree of depth basis of abolishing region 6 at last seat earth increases progressively whole anticline place downward deepening segment length some/mono-corresponding to vertical height,
Repetition step 1) to 4 like this) until coal seam 1 full extraction of open coal mine anticline place downward deepening section is complete, recover horizon mining.
Claims (1)
1. the downward deepening section in open coal mine anticline place recovery method, is characterized in that comprising the steps:
1) broken hole end seat earth (5)
The position of the downward deepening section in colliery anticline place section start distance end side certain distance, will cheat end seat earth (5) material downwards and adopt away, and form seat earth and abolish region (6) in the open; Take material away the degree of depth reach whole anticline place downward deepening segment length some/height corresponding to a place;
2) roof is put up a bridge
Set up new bridging end at the bottom of hole after seat earth (5) is abolished and between the roof (3) of corresponding height and help road (4);
3) connection ramp is laid
Stope peeled off material through new end side road to dump and abolish region (6) to seat earth, lay the temporary road and ramp (2) that are connected with internal dumping (7); The depth and broadness that the gradient in described ramp abolishes region (6) by the seat earth in step 1) determines; Determine thus described some/the concrete numerical value of mono-;
4) transport stope and peel off material
Stope is peeled off material be transported to internal dumping (7) by new bridging end side road (4), temporary road and ramp (2);
Treat that the end, hole advances a segment distance, and after holding side to possess new bridging end side road (4) condition of formation, region (6) certain distance is being abolished apart from last seat earth, repeat step 1) to 4) set up next end side road (4) of putting up a bridge, utilization dumps material and lays temporary road and ramp (2), and transport stope stripping material, wherein in step 1), seat earth material at the bottom of hole is adopted away, form the degree of depth that seat earth abolishes region (6) with the height of internal dumping (7) for benchmark, the degree of depth basis of abolishing region (6) at last seat earth increases progressively whole anticline place downward deepening segment length some/mono-corresponding to vertical height,
Repetition step 1) to 4 like this) until coal seam (1) full extraction of open coal mine anticline place downward deepening section is complete, recover horizon mining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310119305.XA CN103174427B (en) | 2013-04-09 | 2013-04-09 | Method for exploiting downward deepening section of anticlinal part of opencast coal mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310119305.XA CN103174427B (en) | 2013-04-09 | 2013-04-09 | Method for exploiting downward deepening section of anticlinal part of opencast coal mine |
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| CN103174427A CN103174427A (en) | 2013-06-26 |
| CN103174427B true CN103174427B (en) | 2015-04-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103726850A (en) * | 2013-10-09 | 2014-04-16 | 中国矿业大学 | Open-pit mining method for triangular ore quantity between layered flat deposit strip areas |
| CN105781554B (en) * | 2016-04-11 | 2018-01-12 | 中国矿业大学(北京) | A kind of open coal mine draws bucket shovel overcast stripping recovery method |
| CN112922601B (en) * | 2021-02-26 | 2023-04-07 | 辽宁工程技术大学 | Two-quantity reserving method for strip mine of inclined coal seam |
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| RU2204720C2 (en) * | 2001-07-23 | 2003-05-20 | Институт горного дела - Научно-исследовательское учреждение РАН | Method of opencast mining of mineral deposits and excavator-hopper transfer point for method embodiment |
| CN100575664C (en) * | 2005-10-15 | 2009-12-30 | 中国矿业大学 | The open coal mine step type raftings transmission path in putting up a bridge and connecting |
| CN102966355A (en) * | 2012-12-06 | 2013-03-13 | 马钢集团设计研究院有限责任公司 | Method for creating internal dumping conditions of strip mine |
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