CN111364994A - Fully-mechanized mining-to-filling continuous propulsion collaborative mining method - Google Patents
Fully-mechanized mining-to-filling continuous propulsion collaborative mining method Download PDFInfo
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- CN111364994A CN111364994A CN202010211823.4A CN202010211823A CN111364994A CN 111364994 A CN111364994 A CN 111364994A CN 202010211823 A CN202010211823 A CN 202010211823A CN 111364994 A CN111364994 A CN 111364994A
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- 238000005065 mining Methods 0.000 title claims abstract description 129
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000003245 coal Substances 0.000 claims abstract description 60
- 239000007787 solid Substances 0.000 claims abstract description 38
- 239000011343 solid material Substances 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 7
- 230000007704 transition Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 8
- 230000005641 tunneling Effects 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
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Abstract
A method for converting fully mechanized mining into filling continuous propulsion and collaborative mining belongs to the technical field of safe mining. The mining method comprises three stages of fully mechanized mining, transitional propulsion section mining and solid filling mining, wherein mining of a transitional connecting section is introduced between a set fully mechanized mining section and a set solid filling section to form continuous propulsion collaborative mining integrating a fully mechanized mining section, a transitional propulsion section and a solid filling section, the supporting state of a fully mechanized mining-filling hydraulic support and the top plate management mode are changed through the transitional connecting section, and a rear top beam, a porous bottom-dump conveyor and a tamping mechanism are installed; and in the solid filling section, a fully mechanized mining-filling hydraulic support is adopted to fill and support the top plate in a supporting state, and solid materials are backfilled into the goaf management top plate. The method is beneficial to exerting double advantages of solid filling and traditional fully mechanized mining, has important significance for mining various protective coal pillars and prolonging the advancing length of a working face, simultaneously improves the resource recovery rate, treats solid wastes such as gangue and the like in a large scale, and achieves safe, green and efficient mining.
Description
Technical Field
The invention relates to the technical field of coal mining processes, in particular to a fully mechanized mining to filling continuous propulsion collaborative mining method which is suitable for low gangue yield in a mine and needs to safely recover and protect a coal pillar.
Background
The comprehensive mechanized solid filling coal mining technology utilizes solid materials in a mining area to carry out backfill treatment on the goaf, has outstanding technical advantages in the aspects of protecting buildings (structures) in the mining area, land, water, ecological environment and the like, improves the recovery rate of coal resources, and prolongs the service life of a mine. However, according to the requirement of the filling rate, the solid filling materials generally need to be repeatedly pushed and tamped, and the process is relatively complex, so that the single-yield and single-effect of the solid filling working face is lower than that of the traditional fully mechanized mining working face. At present, under the condition that partial positions of the earth surface need special protection, solid filling coal mining is generally used for full-mining full-filling mining or mining is not carried out. However, the amount of solid wastes in some mines is insufficient, so that the requirement of full mining and full filling cannot be met, and coal resources are required to be fully mined. Therefore, how to fully exploit coal resources and effectively fill and protect the earth surface needing protection becomes a problem to be solved urgently on site.
Disclosure of Invention
The technical problem is as follows: the invention aims to overcome the defects in the prior art and provide the fully-mechanized mining-filling continuous propulsion collaborative mining method which is simple in process, integrated in mining and filling, capable of realizing full mining and full filling and capable of effectively protecting the earth surface.
The technical scheme is as follows: the invention discloses a fully mechanized mining-filling continuous propulsion collaborative mining method, which comprises fully mechanized mining and solid filling mining, wherein mining of a transition connecting section is introduced between a set fully mechanized mining section and a set solid filling section to form continuous propulsion collaborative mining integrating a fully mechanized mining section, a transition propulsion section and a solid filling section, and the method comprises the following specific steps:
a. operation of making incision
A notch is cut from the top of the transported gangue, and a section transported gangue roadway is formed by tunneling in the direction from the top to the section boundary in the coal body;
a cut is made from the coal conveying upward mountain, and a section coal conveying roadway is formed by tunneling in the direction from the upward mountain to the section boundary in the coal body;
making a cut from the upper mountain of the track, and tunneling from the upper mountain to a section gangue conveying roadway in a rock mass to form an air return inclined roadway;
cutting holes are formed when the section gangue transporting roadway and the section coal transporting roadway are dug to the section boundary to form a fully mechanized mining conversion filling continuous propulsion collaborative mining working surface;
b. fully-mechanized mining-filling hydraulic support supporting top plate
Fully mechanized mining and filling hydraulic supports for supporting a top plate are carried out on a fully mechanized mining section of a fully mechanized mining working face, and a goaf is managed according to a caving method;
arranging a coal mining machine, a scraper conveyor and a fully mechanized mining-filling hydraulic support in the cutting hole;
arranging coal transportation equipment consisting of a crusher, a coal transportation transfer conveyor and a coal transportation belt conveyor in the section coal transportation roadway;
c. coal mining, frame moving and pushing circulating operation
The method comprises the following steps that (1) a step of retreating type pushing fully-mechanized mining to filling continuous pushing is carried out from a section boundary cutting hole to cooperate with a mining working face, and coal mining, frame moving and pushing circulation operation within one step is completed;
d. mining of transitional coupling section
Along with the cooperative mining working face entering a transition connection section, drilling a plurality of anchor rods and anchor cables at the position of a top plate empty top in front of the fully mechanized mining-filling hydraulic support, laying anchor nets to ensure that the top plate is stable in level and good in condition, forming a sufficient working space environment and ensuring a good stress state, and after the mining of the transition connection section is finished, changing the supporting state and the top plate management mode of the fully mechanized mining-filling hydraulic support;
e. filling with solids
Converting the fully mechanized mining-filling hydraulic support into a filling support state to support a roof, and backfilling a goaf management roof with solid materials for a solid filling section;
additionally arranging a machine tail lifting platform in the section coal conveying roadway, additionally arranging solid filling material conveying equipment in the section gangue conveying roadway, and completing the cycle operation of coal mining, frame moving, pushing sliding, filling blanking and pushing of the multi-hole bottom-dump conveyor within one step; the solid filling material transportation equipment consists of a machine head lifting platform, a self-moving solid material transfer conveyor and a solid material belt conveyor;
f. and (e) repeating the steps c-e until the whole fully-mechanized mining to filling continuous propulsion collaborative mining working face mining operation is completed.
And determining the position of the collaborative mining working face entering the transition connecting section according to the area of the fully mechanized mining working face which is pushed to the edge of the range of the coal pillar or the ground surface subsidence which requires the protection of the ground surface.
The method for changing the supporting state and the top plate management mode of the fully mechanized mining-filling hydraulic support comprises the following steps: and installing a rear top beam, a tamping mechanism and a porous bottom-dump conveyor, lifting the supporting top plate by the rear top beam, and backfilling the solid materials into the goaf management top plate.
Has the advantages that: due to the adoption of the technical scheme, the invention effectively solves the technical problem of realizing solid filling and traditional fully mechanized mining mixed mining on the same coal face. Introducing mining of a transition connecting section between a set fully mechanized mining section and a set solid filling section to form continuous propulsion collaborative mining integrating the fully mechanized mining section, the transition propulsion section and the solid filling section, finishing the change of the supporting state of a fully mechanized mining-filling hydraulic support and the change of a top plate management mode through the transition connecting section, and installing a rear top beam, a porous bottom-dump conveyor and a tamping mechanism; and in the solid filling section, a fully mechanized mining-filling hydraulic support is adopted to fill and support the top plate in a supporting state, and solid materials are backfilled into the goaf management top plate. The mining method is beneficial to exerting double advantages of solid filling and traditional fully mechanized mining, has important significance on mining of various protective coal pillars and prolonging of the advancing length of a working face, simultaneously improves the resource recovery rate, treats solid wastes such as gangue and the like in a large scale, achieves safe, green and efficient mining, backfills a goaf at a solid filling fully mechanized mining section of a mixed working face, reduces environmental pollution, and plays a role in protecting the corresponding ground surface. The traditional fully-mechanized mining section does not need filling, so that the coal mining time is saved, the coal can be efficiently mined, and the single-yield and single-effect of a working face are improved. The method is simple, low in cost, convenient to operate, good in effect and wide in practicability in the technical field.
Drawings
FIG. 1 is a state diagram of the process of the present invention;
FIG. 2 is a schematic sectional structure diagram of a fully mechanized mining section of the invention;
FIG. 3 is a schematic cross-sectional view of a transition section of the present invention;
fig. 4 is a schematic cross-sectional view of the filling segment according to the present invention.
In the figure: 1-gangue conveying and loading, 2-track loading, 3-coal conveying and loading, 4-return air inclined roadway, 5-section gangue conveying roadway, 6-section coal conveying roadway, 7-hole cutting, 8-transition connecting section, 9-solid filling section, 10-comprehensive mining section, 11-comprehensive mining-filling hydraulic support, 12-coal mining machine, 13-scraper conveyor, 14-tamping mechanism and 15-porous bottom-dump conveyor; 16-anchor rods and anchor cables.
Detailed Description
The invention will be further described with reference to examples in the drawings to which:
as shown in figure 1, the fully mechanized mining-to-filling continuous propulsion collaborative mining method comprises fully mechanized mining and solid filling mining, wherein mining of a transition connecting section 8 is introduced between a set fully mechanized mining section 10 and a set solid filling section 9 to form continuous propulsion collaborative mining with three integrated fully mechanized mining sections, transition propulsion sections and solid filling sections, and the method comprises the following specific steps:
a. operation of making incision
Firstly, a notch is cut from a gangue transporting upper hill 1, and a section gangue transporting roadway 5 is formed by tunneling in the direction from the upper hill to the section boundary in a coal body; then, a cut is made from the coal transporting upward mountain 3, and a section coal transporting roadway 6 is formed by tunneling in the direction from the upward mountain to the section boundary in the coal body; then, a cut is cut from the upper hill 2 of the track, and the rock mass is tunneled from the upper hill to the section gangue conveying roadway in the rock mass to form an air return inclined roadway 4; when the section gangue transporting roadway 5 and the section coal transporting roadway 6 are excavated to the section boundary, a cutting hole 7 is formed to form a fully mechanized mining conversion filling continuous propulsion collaborative mining working surface;
b. fully-mechanized mining-filling hydraulic support supporting top plate
As shown in fig. 2, a fully mechanized mining-filling hydraulic support supporting top plate is carried out on a fully mechanized mining section 10 of a fully mechanized mining working face, a rear top beam, a tamping mechanism and a porous bottom-dump conveyor are not installed on the support, a goaf is managed according to a caving method, key equipment of the fully mechanized mining, transferring and filling working face, such as a coal mining machine 12, a scraper conveyor 13, a fully mechanized mining-filling hydraulic support 11 and the like, is arranged in the cutting hole 7, and coal transportation equipment consisting of a crusher, a coal transferring machine and a coal belt conveyor is arranged in the section coal transportation lane 6; and key solid filling material transportation equipment such as a nose lifting platform, a self-moving type solid material transfer conveyor, a solid material belt conveyor and the like is arranged in the section gangue transporting roadway 5.
c. Coal mining, frame moving and pushing circulating operation
The backward type is pushed from the section boundary cutting hole 7 to fully-mechanized mining to filling and continuously pushes the collaborative mining working face to finish the circular operation of coal mining, frame moving and pushing in one step, and the collaborative mining working face enters a transition connecting section 8; and determining the position of the collaborative mining working face entering the transition connecting section 8 according to the area of the ground surface required to be protected when the fully mechanized mining working face is pushed to the edge of the range of the coal pillar or the ground surface is sunk.
d. Mining of transitional coupling section
After entering the transition joining section 8, drilling a plurality of anchor rods and anchor cables 16 at the front roof empty top position of the fully mechanized mining-filling hydraulic support 11 and laying anchor nets to ensure that the roof is stable in level and good in roof condition, form a sufficient working space environment and ensure a good stress state, and after the mining of the transition joining section 8 is finished, changing the supporting state and the roof management mode of the fully mechanized mining-filling hydraulic support, as shown in fig. 4, namely installing a rear top beam, a tamping mechanism 14 and a porous bottom-dump conveyor 15, lifting the rear top beam to support the roof, and backfilling solid materials into a goaf management roof;
e. filling with solids
Converting the fully mechanized mining-filling hydraulic support into a filling support state to support a roof, and backfilling a goaf management roof with solid materials for the solid filling section 9;
a tail lifting platform is additionally arranged in the section coal conveying lane 6, solid filling material conveying equipment is additionally arranged in the section gangue conveying lane 5, and the circulating operation of coal mining, frame moving, pushing sliding, filling blanking and pushing of the multi-hole bottom-dump conveyor in one step is completed; the solid filling material transportation equipment consists of a machine head lifting platform, a self-moving solid material transfer conveyor and a solid material belt conveyor;
f. and (e) repeating the steps c-e until the whole fully-mechanized mining to filling continuous propulsion collaborative mining working face mining operation is completed.
Claims (3)
1. A fully mechanized mining-to-filling continuous propulsion collaborative mining method comprises fully mechanized mining and solid filling mining, and is characterized in that: the method is characterized in that mining of a transition connecting section (8) is introduced between a set fully mechanized mining section (10) and a solid filling section (9) to form continuous propulsion collaborative mining of the fully mechanized mining section, the transition propulsion section and the solid filling section, and the method comprises the following specific steps:
a. operation of making incision
Cutting an opening from a gangue transporting upper hill (1), and tunneling in the direction from the upper hill to the boundary of the section in the coal body to form a section gangue transporting roadway (5);
a cut is made from the coal conveying upward mountain (3), and a section coal conveying roadway (6) is formed by tunneling in the direction from the upward mountain to the section boundary in the coal body;
a cut is made from the upper hill (2) of the track, and a return air inclined roadway (4) is formed in the rock mass by tunneling from the upper hill to the section gangue conveying roadway;
when the section gangue transporting roadway (5) and the section coal transporting roadway (6) are dug to the section boundary, a cutting hole (7) is cut to form a fully mechanized mining conversion filling continuous propulsion collaborative mining working surface;
b. fully-mechanized mining-filling hydraulic support supporting top plate
Fully mechanized mining and filling of a hydraulic support supporting roof are carried out on a fully mechanized mining section (10) of a fully mechanized mining working surface, and a goaf is managed according to a caving method;
arranging a coal mining machine (12), a scraper conveyor (13) and a fully mechanized mining-filling hydraulic support (11) in the cutting hole (7);
arranging coal transportation equipment consisting of a crusher, a coal transportation transfer conveyor and a coal transportation belt conveyor in the section coal transportation roadway (6);
c. coal mining, frame moving and pushing circulating operation
The backward type is pushed from the section boundary cutting hole (7) to convert the fully mechanized mining to the filling to continuously push the cooperative mining working surface, and the coal mining, frame moving and pushing circulation operation in one step is completed;
d. mining of transitional coupling section
Along with the cooperative mining working face entering the transition connection section (8), a plurality of anchor rods and anchor cables (16) are drilled at the position of the front top plate empty top of the fully mechanized mining-filling hydraulic support (11), anchor nets are laid to ensure that the top plate is stable in level and good in condition, a sufficient operation space environment is formed, a good stress state is ensured, and after the mining of the transition connection section (8) is completed, the supporting state and the top plate management mode of the fully mechanized mining-filling hydraulic support are changed;
e. filling with solids
The fully mechanized mining-filling hydraulic support is converted into a filling support state to support the top plate, and the solid filling section (9) is backfilled with a goaf management top plate by using solid materials;
a tail lifting platform is additionally arranged in the section coal conveying roadway (6), solid filling material conveying equipment is additionally arranged in the section gangue conveying roadway (5), and the circulating operation of coal mining, frame moving, pushing sliding, filling blanking and pushing of the multi-hole bottom-dump conveyor in one step is completed; the solid filling material transportation equipment consists of a machine head lifting platform, a self-moving solid material transfer conveyor and a solid material belt conveyor;
f. and (e) repeating the steps c-e until the whole fully-mechanized mining to filling continuous propulsion collaborative mining working face mining operation is completed.
2. The fully mechanized mining to filling continuous propulsion collaborative mining method according to claim 1, characterized in that: and determining the position of the collaborative mining working face entering the transition connecting section (8), and protecting the area of the ground surface according to the requirement of the fully mechanized mining working face to be pushed to the edge of the range of the coal pillar or the ground surface subsidence.
3. The fully-mechanized mining to filling continuous advancing collaborative mining method according to claim 1 or 2, characterized in that: the method for changing the supporting state and the top plate management mode of the fully mechanized mining-filling hydraulic support comprises the following steps: and (3) installing a rear top beam, a tamping mechanism (14) and a multi-hole bottom-dump conveyor (15), lifting the supporting top plate by the rear top beam, and backfilling the solid materials into the goaf management top plate.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114704273A (en) * | 2022-03-28 | 2022-07-05 | 中国矿业大学 | Collaborative design and construction method of non-roadside-filling gob-side entry retaining anchor structure |
| CN116906044A (en) * | 2022-08-25 | 2023-10-20 | 路彬 | Support type intelligent continuous mining continuous filling coal mining equipment and method |
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| CN116906044A (en) * | 2022-08-25 | 2023-10-20 | 路彬 | Support type intelligent continuous mining continuous filling coal mining equipment and method |
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