CN102128051A - Method for filling gob area with attal in coal mine underhole - Google Patents
Method for filling gob area with attal in coal mine underhole Download PDFInfo
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- CN102128051A CN102128051A CN 201110058002 CN201110058002A CN102128051A CN 102128051 A CN102128051 A CN 102128051A CN 201110058002 CN201110058002 CN 201110058002 CN 201110058002 A CN201110058002 A CN 201110058002A CN 102128051 A CN102128051 A CN 102128051A
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- attal
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- spoil
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Abstract
The invention relates to a method for filling a gob area with attal in a coal mine underhole. The method comprises the following steps of: directly crushing and screening a mixture of coal and attal which are mined from an underhole stope working surface, conveying the mixture material with the granularity larger than or equal to 40mm into a coal-and-attal selective crusher to crush again and then grading; adding a suitable amount of water to the crushed attal with the granularity smaller than 30mm and fully stirring and mixing into a pumpable plastic condensed material; and directly conveying the stirred condensed material to a gob area for filling through a pipeline pump by an attal conveying pump. Through separating underhole coal and attal to directly fill the gob area, the invention reduces ground depression and lightens lifting pressure in transmission while reducing the occupation area and the pollution of an attal mountain without a special bracket or rod-casting system or underhole attal cabin and has the advantages of high filling speed, simple filling method, strong reliability, less investment and low cost.
Description
Technical field
The present invention relates to the method for bashing, especially a kind of method that is applicable to filling goaf by gangue under the bigger coal mine of bastard coal difference in hardness.
Background technology
It is the topmost environmental problem root of Coal Production that open-air discharging of gangue and surface subsidence destroy, and is the key factor that influences mining area economic development and social stability.Filling goaf by gangue can reduce surface subsidence under the coal mine, realizes that spoil does not go out well, alleviates the pressure that transportation promotes, and reduces the floor space and the pollution of hillock simultaneously.The downhole gangue bashing needs special support, throws the cash system and sets up the downhole gangue storehouse at present, and investment is big, the cost height.
Summary of the invention
Technical problem: the objective of the invention is to overcome the deficiency in the prior art, provide a kind of and need not special support, need not to throw the cash system and set up the downhole gangue storehouse, directly bastard coal separated then method with the gangue pump packing goaf in the down-hole.
Technical scheme: the method for filling goaf by gangue under the coal mine of the present invention comprises the steps:
A, the bastard coal compound under the down-hole stope adopted are transported to the discaling roll formula Sizing Crusher that is located in the haulage way and are carried out fragmentation, and the bastard coal compound is broken for granularity smaller or equal to 80mm;
B, then with granularity smaller or equal to 80mm the bastard coal compound directly flow to the underground vibrating classifying screen and sieve through belt, granularity enters the coal conveyer belt less than the material of 40mm and transports, and granularity is sent into the bastard coal bradford breaker more than or equal to the material of 40mm and carried out once more broken;
C, the material behind the selective crushing crusher machine are again by the spiral classifier classification, granularity enters the coal conveyer belt less than the coal of 40mm and transports, granularity is carried out fragmentation once more more than or equal to the spoil of 40mm through the pair roller type Sizing Crusher, is broken into the spoil of granularity less than 30mm;
D, in the spoil of granularity, add entry less than 30mm, its quality ratio range is: water is 10 ~ 30%, spoil is 70 ~ 90%, fully stirs by the twin-shaft screw-type mixer that is located at the down-hole, and the thick material after directly will stirring by the spoil delivery pump is delivered to the goaf through tubing pump and carried out filling.
Beneficial effect: the present invention has realized that the down-hole bastard coal directly separates and transhipment, direct pumping bashing after the spoil fragmentation that the down-hole is separated, solved the direct separation problem of down-hole bastard coal, and make the direct bashing of spoil after the separation, reduced surface subsidence, alleviated the pressure that transportation promotes, reduced the floor space and the pollution of hillock simultaneously, need not special support, need not to throw the pole system and set up the downhole gangue storehouse, filling velocity is fast, placement method is simple, has realized that working face extraction and bashing carry out good reliability simultaneously, small investment, cost is low, has practicality widely in the present technique field.
The specific embodiment
The method of filling goaf by gangue under the coal mine of the present invention, the bastard coal compound under directly the down-hole stope being adopted is transported to the discaling roll formula Sizing Crusher that is located in the haulage way and is carried out the one-level fragmentation, and the bastard coal compound is broken for granularity smaller or equal to 80mm; Granularity is directly flowed to the underground vibrating classifying screen through belt smaller or equal to the bastard coal compound of 80mm sieves, granularity enters the coal conveyer belt less than the material of 40mm and transports, granularity is sent into the bastard coal bradford breaker more than or equal to the material of 40mm and is carried out once more broken, utilize the nonhomogeneous hardness of bastard coal, identical impact force makes the lower coarse coal of hardness be broken into fritter, and the bulk spoil keeps original lumpiness substantially; Material behind the selective crushing crusher machine is again by the spiral classifier classification, granularity enters the coal conveyer belt less than the coal of 40mm and transports, granularity is carried out fragmentation once more more than or equal to the spoil of 40mm through the pair roller type Sizing Crusher, is broken into the spoil of granularity less than 30mm; In the spoil of granularity, add entry less than 30mm, its quality ratio range is: water is 10 ~ 30%, spoil is 70 ~ 90%, fully stir by the twin-shaft screw-type mixer that is located at the down-hole, but be mixed into the mobile thick material of pump plasticity, the thick material after directly will stirring by the spoil delivery pump is delivered to the goaf through tubing pump and is carried out filling.
Claims (1)
1. the method for filling goaf by gangue under the coal mine is characterized in that: comprise the steps:
A, the bastard coal compound under the down-hole stope adopted are transported to the discaling roll formula Sizing Crusher that is located in the haulage way and are carried out fragmentation, and the bastard coal compound is broken for granularity smaller or equal to 80mm;
B, then granularity is directly flowed to the underground vibrating classifying screen through belt smaller or equal to the bastard coal compound of 80mm and sieve, granularity enters the coal conveyer belt less than the material of 40mm and transports, and granularity is sent into the bastard coal bradford breaker more than or equal to the material of 40mm and carried out once more broken;
C, the material behind the selective crushing crusher machine are again by the spiral classifier classification, granularity enters the coal conveyer belt less than the coal of 40mm and transports, granularity is carried out fragmentation once more more than or equal to the spoil of 40mm through the pair roller type Sizing Crusher, is broken into the spoil of granularity less than 30mm;
D, in the spoil of granularity, add entry less than 30mm, its quality ratio range is: water is 10 ~ 30%, spoil is 70 ~ 90%, fully stir by the twin-shaft screw-type mixer that is located at the down-hole, but form the mobile thick material of pump plasticity, the thick material after directly will stirring by the spoil delivery pump is then delivered to the goaf through tubing pump and is carried out filling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110058002 CN102128051A (en) | 2011-03-11 | 2011-03-11 | Method for filling gob area with attal in coal mine underhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110058002 CN102128051A (en) | 2011-03-11 | 2011-03-11 | Method for filling gob area with attal in coal mine underhole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102128051A true CN102128051A (en) | 2011-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110058002 Pending CN102128051A (en) | 2011-03-11 | 2011-03-11 | Method for filling gob area with attal in coal mine underhole |
Country Status (1)
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| CN (1) | CN102128051A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133031A (en) * | 2013-02-28 | 2013-06-05 | 中国矿业大学 | Method and equipment for separating, conveying and filling underground coal and gangues |
| WO2014131323A1 (en) * | 2013-02-28 | 2014-09-04 | 中国矿业大学 | Method and device for using gangue aboveground to backfill mine goaf |
| CN104453994A (en) * | 2014-11-18 | 2015-03-25 | 中国矿业大学(北京) | Gob-side entry retaining method for putting top waste rock down to achieve roadway side packing |
| CN104879162A (en) * | 2015-05-29 | 2015-09-02 | 中国矿业大学(北京) | Reasonable gangue dropping and gob-side entry retaining method of top coal caving face |
| CN106499435A (en) * | 2016-11-29 | 2017-03-15 | 重庆大学 | A kind of placement method of underground goaf and filling system |
| CN108757023A (en) * | 2018-07-09 | 2018-11-06 | 中国矿业大学 | A method of exploiting displacement coal column using spoil strip filling |
| CN110439610A (en) * | 2019-08-30 | 2019-11-12 | 陕西开拓建筑科技有限公司 | A kind of remote slurry filling transportation system in coal mine gob and method |
| CN111841846A (en) * | 2020-07-23 | 2020-10-30 | 中国矿业大学 | Efficient water-saving type coal resource upgrading process for underground separation and pre-discharge of gangue |
| CN113638770A (en) * | 2021-08-30 | 2021-11-12 | 烟台杰瑞石油装备技术有限公司 | Goaf filling equipment and method and goaf filling structure |
| CN114233375A (en) * | 2021-11-12 | 2022-03-25 | 中煤科工开采研究院有限公司 | Pure gangue slurry filling material for mine filling and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734887A (en) * | 2008-11-26 | 2010-06-16 | 佟成林 | Sintering-free self-igniting coal gangue novel wall material and production method thereof |
| CN101967993A (en) * | 2010-09-30 | 2011-02-09 | 江苏中机矿山设备有限公司 | Underground gangue sorting and filling system and method |
-
2011
- 2011-03-11 CN CN 201110058002 patent/CN102128051A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734887A (en) * | 2008-11-26 | 2010-06-16 | 佟成林 | Sintering-free self-igniting coal gangue novel wall material and production method thereof |
| CN101967993A (en) * | 2010-09-30 | 2011-02-09 | 江苏中机矿山设备有限公司 | Underground gangue sorting and filling system and method |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133031A (en) * | 2013-02-28 | 2013-06-05 | 中国矿业大学 | Method and equipment for separating, conveying and filling underground coal and gangues |
| WO2014131323A1 (en) * | 2013-02-28 | 2014-09-04 | 中国矿业大学 | Method and device for using gangue aboveground to backfill mine goaf |
| CN103133031B (en) * | 2013-02-28 | 2015-05-20 | 中国矿业大学 | Method and equipment for separating, conveying and filling underground coal and gangues |
| CN104453994A (en) * | 2014-11-18 | 2015-03-25 | 中国矿业大学(北京) | Gob-side entry retaining method for putting top waste rock down to achieve roadway side packing |
| CN104879162A (en) * | 2015-05-29 | 2015-09-02 | 中国矿业大学(北京) | Reasonable gangue dropping and gob-side entry retaining method of top coal caving face |
| CN106499435A (en) * | 2016-11-29 | 2017-03-15 | 重庆大学 | A kind of placement method of underground goaf and filling system |
| CN108757023A (en) * | 2018-07-09 | 2018-11-06 | 中国矿业大学 | A method of exploiting displacement coal column using spoil strip filling |
| CN110439610A (en) * | 2019-08-30 | 2019-11-12 | 陕西开拓建筑科技有限公司 | A kind of remote slurry filling transportation system in coal mine gob and method |
| CN111841846A (en) * | 2020-07-23 | 2020-10-30 | 中国矿业大学 | Efficient water-saving type coal resource upgrading process for underground separation and pre-discharge of gangue |
| CN113638770A (en) * | 2021-08-30 | 2021-11-12 | 烟台杰瑞石油装备技术有限公司 | Goaf filling equipment and method and goaf filling structure |
| CN113638770B (en) * | 2021-08-30 | 2023-07-18 | 烟台杰瑞石油装备技术有限公司 | Goaf filling equipment and method and goaf filling structure |
| CN114233375A (en) * | 2021-11-12 | 2022-03-25 | 中煤科工开采研究院有限公司 | Pure gangue slurry filling material for mine filling and application thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20110720 |