CN215408757U - Filling system of coal mine - Google Patents
Filling system of coal mine Download PDFInfo
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- CN215408757U CN215408757U CN202120791813.2U CN202120791813U CN215408757U CN 215408757 U CN215408757 U CN 215408757U CN 202120791813 U CN202120791813 U CN 202120791813U CN 215408757 U CN215408757 U CN 215408757U
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Abstract
The utility model discloses a coal mine filling system, which comprises a pulping system, a coal gangue crushing system and a filling branch roadway, wherein the coal gangue crushing system comprises a coal gangue crushing system and a coal gangue crushing system; the slurry outlet end of a slurry conveying pipe of the pulping system penetrates through the ground and is positioned in the filling branch roadway; the discharge end of a feeding pipe of the coal gangue crushing system penetrates through the ground and is positioned in the filling branch roadway; and a screen underflow outlet of a second vibrating screen of the coal gangue crushing system is communicated with a feed inlet of a crushed coal gangue discharge bin of the pulping system. Has the advantages that: the connecting structure is simple and easy to realize; the combination of paste filling and gangue filling can not only have better control effect on the ground surface subsidence, but also can process the gangue to the maximum extent, reduce the filling cost, and have remarkable technical advantages in economic and social benefits.
Description
The technical field is as follows:
the utility model belongs to the field of coal mine backfill, and particularly relates to a coal mine filling system.
Background art:
along with the exploitation of coal in China, the coal pressing problem of ' three times (under buildings, under railways and under water bodies) for restricting the development of coal is more and more prominent, according to incomplete statistics, the coal pressing quantity of ' three times ' in China reaches 1040 hundred million tons, and how to safely and efficiently exploit the coal pressing resource of ' three times ' is more and more emphasized by people; the coal mining technology for filling the goaf with the gangue, the fly ash, the building rubbish and the special filling material along with the advancing of the stope face is one of main contents of a green mining technology system of the coal mine, has the functions of controlling rock stratum movement and ground surface subsidence due to small disturbance to the rock stratum, and is an effective way for solving the environmental problem of coal mining and 'under three' pressing coal mining.
The filling mining modes commonly used in domestic coal mines at present comprise longwall filling mining and roadway filling mining; the longwall filling mining has the characteristics of simple layout of a stoping roadway, high coal mining efficiency and high coal resource recovery rate, but has the limitations of large exposed area of a top plate, insufficient restriction space of filling materials, difficulty in coordination operation of coal mining and filling and the like in the mining process. The roadway filling mining has the characteristics of small exposed area of a top plate and obvious rock stratum control effect, but has the limitations of low coal resource recovery rate, complex coal mining process and coal mining system and the like.
From the filling mode, the gangue filling technology and the paste filling technology are generally available. The waste rock filling technology mainly aims at processing waste rocks, so that the waste rocks cannot completely fill a goaf, a gap exists between the surface of the filled waste rock layer and the top of a mine, and the problem of ground subsidence is easily caused, so that disasters are caused, and economic losses are caused; although the paste filling technology can effectively control the overlying strata cracks and the surface subsidence, the paste filling technology has the problems of complex filling system and higher technical requirement, and particularly has the problems of lower filling efficiency, lower annual output and higher filling cost.
The utility model has the following contents:
the utility model aims to provide a coal mine filling system which is simple in connection structure and reduces filling cost.
The technical scheme of the utility model discloses a coal mine filling system, which comprises a pulping system, a coal gangue crushing system and a filling branch roadway; the slurry outlet end of a slurry conveying pipe of the pulping system penetrates through the ground and is positioned in the filling branch roadway; the discharge end of a feeding pipe of the coal gangue crushing system penetrates through the ground and is positioned in the filling branch roadway; and a screen underflow outlet of a second vibrating screen of the coal gangue crushing system is communicated with a feed inlet of a crushed coal gangue discharge bin of the pulping system.
Furthermore, the pulping system comprises a cement bin, a fly ash bin, an additive bin, a water pool, the crushed coal gangue discharge bin, a stirring device and the slurry conveying pipe; the cement bin, the fly ash bin, the additive bin, the water pool and the crushed coal gangue discharge bin are connected with a feed inlet of a first stirrer of the stirring device; and a slurry outlet of a second stirrer of the stirring device is communicated with a slurry inlet end of the slurry conveying pipe.
Further, the stirring device comprises the first stirrer and the second stirrer; the slurry outlet of the first stirrer is communicated with the slurry inlet of the second stirrer.
Further, the cement bin, the fly ash bin and the additive bin are respectively provided with a screw conveyer in a connected mode at the discharge port, and the discharge port of each screw conveyer is communicated with the feed port of the first stirring machine.
Further, a feeding belt conveyor is arranged below a discharge port of the crushed coal gangue discharging bin, a belt conveyor is arranged below a discharge end of the feeding belt conveyor, and a discharge port of the belt conveyor is located above a feed port of the first stirring machine.
Further, the coal ash additive storage bin comprises a compressed air pipeline, wherein an air outlet of the compressed air pipeline is communicated with air inlets below the cement bin, the coal ash bin and the additive bin respectively.
Furthermore, dust collectors are respectively arranged at the air outlets above the cement bin, the fly ash bin and the additive bin.
Further, the coal gangue crushing system comprises a coal gangue bin, a first crusher, a first vibrating screen, a crushed coal gangue buffer bin, the feeding pipe, a second crusher and a second vibrating screen; the discharge hole of the coal gangue storage bin is communicated with the feed inlet of the first crusher, the discharge hole of the first crusher is communicated with the feed inlet of the first vibrating screen, the undersize outlet of the first vibrating screen is communicated with the feed inlet of the crushed coal gangue buffer storage bin, and the discharge hole of the crushed coal gangue buffer storage bin is communicated with the feed end of the feed pipe; an oversize outlet of the first vibrating screen is communicated with a feed inlet of the second crusher; and the discharge hole of the second crusher is communicated with the feed hole of the second vibrating screen.
Further, an oversize outlet of the second vibrating screen is communicated with a feed inlet of the second crusher.
Furthermore, dust collection covers are arranged on the first crusher, the first vibrating screen, the second crusher and the second vibrating screen respectively, and each dust collection cover is connected with a dust remover through a dust extraction pipe.
The utility model has the advantages that:
the connecting structure is simple and easy to realize; the coal gangue is crushed into 9-10cm broken stones and 0.5-1cm broken stones by a coal gangue crushing system, the 9-10cm broken stones can be directly conveyed into a filling branch roadway through a feeding pipe, the 0.5-1cm broken stones are used as raw materials and conveyed into a pulping system to prepare filling paste, the 9-10cm broken stones are firstly filled and stacked into the filling branch roadway until the height of the filled broken stones is 0.3-0.6m away from the top of the filling branch roadway, the filling branch roadway is filled with the paste to be abutted, and the paste filling and the gangue filling are combined, so that the coal gangue crushing system can control ground surface subsidence well, treat the gangue to the greatest extent, reduce the filling cost, and has remarkable technical advantages in economic and social benefits.
Description of the drawings:
fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
The system comprises a pulping system 1, a cement bin 101, a fly ash bin 102, an additive bin 103, a water pool 104, a crushed gangue discharge bin 105, a stirring device 106, a first stirring machine 1061, a second stirring machine 1062, a slurry conveying pipe 107, a compressed air pipeline 108, a screw conveyor 109, a feeding belt conveyor 110, a belt conveyor 111, a dust collector 112, a coal gangue crushing system 2, a coal gangue bin 201, a first crusher 202, a first vibrating screen 203, a crushed gangue buffer bin 204, a feeding pipe 205, a second crusher 206, a second vibrating screen 207, a dust collection cover 208, a dust collector 209 and a filling branch roadway 3.
The specific implementation mode is as follows:
the present invention will be described in further detail by way of examples with reference to the accompanying drawings.
As shown in fig. 1, a coal mine filling system comprises a pulping system 1, a coal gangue crushing system 2 and a filling branch roadway 3; the slurry outlet end of a slurry conveying pipe 107 of the pulping system 1 penetrates through the ground and is positioned in the filling branch roadway 3; the discharge end of a feeding pipe 205 of the coal gangue crushing system 2 penetrates through the ground and is positioned in the filling branch roadway 3; and the undersize outlet of the second vibrating screen 207 of the coal gangue crushing system 2 is communicated with the feeding hole of the crushed coal gangue discharge bin 105 of the pulping system 1.
The pulping system 1 comprises a cement bin 101, a fly ash bin 102, an additive bin 103, a water pool 104, a crushed coal gangue discharge bin 105, a stirring device 106, a slurry conveying pipe 107 and a compressed air pipeline 108; the discharge ports of the cement bin 101, the fly ash bin 102, the additive bin 103, the water pool 104 and the crushed coal gangue discharge bin 105 are all connected with the feed port of a first stirrer 1061 of a stirring device 106; the slurry outlet of the second stirrer 1062 of the stirring device 106 is communicated with the slurry inlet end of the slurry conveying pipe 107.
The stirring device 106 comprises a first stirrer 1061 and a second stirrer 1062; the slurry outlet of the first stirrer 1061 is communicated with the slurry inlet of the second stirrer 1062.
The air outlet of the compressed air pipeline 108 is respectively communicated with the air inlets below the cement bin 101, the fly ash bin 102 and the additive bin 103, and when the discharge ports of the cement bin 101, the fly ash bin 102 and the additive bin 103 are blocked, the discharge ports of the cement bin 101, the fly ash bin 102 and the additive bin 103 are dredged by introducing compressed air; dust collectors 112 are respectively arranged at the exhaust ports above the cement bin 101, the fly ash bin 102 and the additive bin 103, and are used for removing dust, preventing dust from polluting the environment, recycling resources and avoiding waste of cement, fly ash and additives.
The coal gangue crushing system 2 comprises a coal gangue bin 201, a first crusher 202, a first vibrating screen 203, a crushed coal gangue buffer bin 204, a feeding pipe 205, a second crusher 206 and a second vibrating screen 207; a discharge hole of the coal gangue bin 201 is communicated with a feed hole of a first crusher 202, a discharge hole of the first crusher 202 is communicated with a feed hole of a first vibrating screen 203, a screen underflow outlet of the first vibrating screen 203 is communicated with a feed hole of a crushed coal gangue buffer bin 204, and a discharge hole of the crushed coal gangue buffer bin 204 is communicated with a feed end of a feeding pipe 205; the oversize outlet of the first vibrating screen 203 is communicated with the feed inlet of the second crusher 206; the discharge hole of the second crusher 206 is communicated with the feed hole of the second vibrating screen 207; the oversize outlet of the second vibrating screen 207 communicates with the feed inlet of the second crusher 206.
Dust collection covers 208 are respectively arranged on the first crusher 202, the first vibrating screen 203, the second crusher 206 and the second vibrating screen 207, and each dust collection cover 208 is respectively connected with a dust remover 209 through a dust extraction pipe for removing dust, so that the quality of a working environment is improved.
The working principle is as follows:
conveying the coal gangue in the coal gangue bin 201 to a first crusher 202 for crushing, then screening by a first vibrating screen 203 to obtain crushed stone with the undersize particle size of 9-10cm, temporarily storing the crushed stone in a crushed coal gangue buffer bin 204, conveying oversize products of the first vibrating screen 203 to a second crusher 206 for crushing, screening by a second vibrating screen 207 to obtain crushed sand with the undersize particle size of 0.5-1cm, temporarily storing the crushed sand in a crushed coal gangue bin 105 as a raw material, conveying the raw material, cement, fly ash, an additive and water to a first stirrer 1061 for mixing and stirring, and then conveying the raw material to a second stirrer 1062 for stirring again to fully mix the raw material to obtain a filling paste.
When the filling branch roadway 3 needs to be filled, firstly, 9-10cm of broken stones temporarily stored in the broken coal gangue buffer bin 204 are conveyed to the filling branch roadway 3 through the feeding pipe 205 until the broken stones in the filling branch roadway 3 are stacked to be 0.3-0.6m away from the top of the filling branch roadway 3, the broken stones are stopped to be introduced, then the prepared filling paste is conveyed to a position between the broken stones and the top of the filling branch roadway 3 through the slurry conveying pipe 107, the filling branch roadway 3 is further filled, and finally, the filling branch roadway 3 is filled; the paste filling and the waste rock filling are combined, so that the ground surface subsidence can be well controlled, the waste rock can be treated to the maximum extent, the filling cost is reduced, and the economic and social benefits have obvious technical advantages.
The foregoing is a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model, and such modifications and adaptations are intended to be included within the scope of the utility model.
Claims (10)
1. The coal mine filling system is characterized by comprising a pulping system, a coal gangue crushing system and a filling branch roadway; the slurry outlet end of a slurry conveying pipe of the pulping system penetrates through the ground and is positioned in the filling branch roadway; the discharge end of a feeding pipe of the coal gangue crushing system penetrates through the ground and is positioned in the filling branch roadway; and a screen underflow outlet of a second vibrating screen of the coal gangue crushing system is communicated with a feed inlet of a crushed coal gangue discharge bin of the pulping system.
2. The coal mine filling system according to claim 1, wherein the slurry preparation system comprises a cement bin, a fly ash bin, an additive bin, a water pool, the crushed gangue discharge bin, a stirring device and the slurry conveying pipe;
the cement bin, the fly ash bin, the additive bin, the water pool and the crushed coal gangue discharge bin are connected with a feed inlet of a first stirrer of the stirring device;
and a slurry outlet of a second stirrer of the stirring device is communicated with a slurry inlet end of the slurry conveying pipe.
3. A coal mine filling system according to claim 2 wherein said blending means comprises said first blender and said second blender; the slurry outlet of the first stirrer is communicated with the slurry inlet of the second stirrer.
4. The coal mine filling system according to claim 3, wherein screw conveyors are respectively connected to the outlets of the cement bin, the fly ash bin and the additive bin, and the outlet of each screw conveyor is communicated with the inlet of the first mixer.
5. The coal mine filling system according to claim 3, wherein a feeding belt conveyor is arranged below the discharge port of the crushed coal gangue discharging bin, a belt conveyor is arranged below the discharge end of the feeding belt conveyor, and the discharge port of the belt conveyor is located above the feed port of the first stirring machine.
6. The coal mine filling system according to claim 2, further comprising a compressed air pipeline, wherein an air outlet of the compressed air pipeline is communicated with air inlets below the cement bin, the fly ash bin and the additive bin respectively.
7. The coal mine filling system according to claim 2, wherein dust collectors are respectively provided at the air outlets above the cement silo, the fly ash silo and the additive silo.
8. The coal mine filling system according to claim 1, wherein the coal gangue crushing system comprises a coal gangue bin, a first crusher, a first vibrating screen, a crushed coal gangue buffer bin, the feeding pipe, a second crusher and the second vibrating screen;
the discharge hole of the coal gangue storage bin is communicated with the feed inlet of the first crusher, the discharge hole of the first crusher is communicated with the feed inlet of the first vibrating screen, the undersize outlet of the first vibrating screen is communicated with the feed inlet of the crushed coal gangue buffer storage bin, and the discharge hole of the crushed coal gangue buffer storage bin is communicated with the feed end of the feed pipe;
an oversize outlet of the first vibrating screen is communicated with a feed inlet of the second crusher; and the discharge hole of the second crusher is communicated with the feed hole of the second vibrating screen.
9. A coal mine filling system according to claim 8 wherein the oversize outlet of the second vibrating screen is in communication with the feed inlet of the second crusher.
10. The coal mine filling system according to claim 8, wherein dust collection covers are respectively arranged on the first crusher, the first vibrating screen, the second crusher and the second vibrating screen, and each dust collection cover is respectively connected with a dust remover through a dust extraction pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120791813.2U CN215408757U (en) | 2021-04-16 | 2021-04-16 | Filling system of coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120791813.2U CN215408757U (en) | 2021-04-16 | 2021-04-16 | Filling system of coal mine |
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| Publication Number | Publication Date |
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| CN215408757U true CN215408757U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120791813.2U Active CN215408757U (en) | 2021-04-16 | 2021-04-16 | Filling system of coal mine |
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| CN (1) | CN215408757U (en) |
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2021
- 2021-04-16 CN CN202120791813.2U patent/CN215408757U/en active Active
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