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Top caving type gangue filling hydraulic support and filling method

A technology of hydraulic support and gangue, which is applied in the field of roof-caving gangue filling hydraulic support and filling, can solve the problems of slow coal mining speed, filling failure, and occupation of filling space, so as to increase the applicable mining height range, increase filling width, and improve The effect of flexibility

Pending Publication Date: 2022-03-25
中煤能源研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the fact that in the prior art, the mechanized gangue filling of full-height full-mechanized mining needs to be connected to the roof, and when the meter level is not connected to the roof, the roof collapses and the rock blocks occupy the filling space, causing filling failure or even failure, and the coal mining speed is slow and the filling capacity is low when filling the roof. The output of gangue does not match the amount of coal and other problems, and the problem that comprehensive mechanized gangue filling cannot be realized during top-coal mining, the invention provides a top-caving gangue filling hydraulic support and a filling method, which meet the requirements of no filling, less filling, Four requirements for fast charging and top coal charging

Method used

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  • Top caving type gangue filling hydraulic support and filling method
  • Top caving type gangue filling hydraulic support and filling method

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Effect test

Embodiment 1

[0050] When applied to a full-height mining face, the roof caving type gangue filling hydraulic support provided by the present invention is arranged in a row on the coal mining face, and the bottom unloading gangue leaking scrapers 7 are connected with each other to form a bottom unloading gangue leaking scraper conveyor , before recovery, adjust the height of the straddle platform 6 through the plug-type telescopic structure according to the mining height of the working face, so that the height of the straddle platform 6 meets the filling height requirements, and does not interfere with the support cylinder 41 at the same time. The gangue filling hydraulic support moves forward, the roof collapsed rock block 81 is not strung into the filling space under the cover of the cover beam 2, and the gangue filling material is transported by the belt to the end of the bottom dumping gangue leaking scraper 7, and the bottom dumping gangue leaking scraper 7. After the conveyor is starte...

Embodiment 2

[0052] When applied to the top coal caving mining working face, the roof caving type gangue filling hydraulic support provided by the present invention is arranged in a row on the coal mining working face, and the bottom unloading gangue leaking scrapers 7 are connected with each other to form the bottom unloading gangue leaking scraper conveying machine, before recovery, adjust the height of the straddle platform 6 through the plug-type telescopic structure according to the mining height of the working face, so that the height of the straddle platform 6 meets the filling height requirements, and does not interfere with the support cylinder 41 at the same time. The gangue filling hydraulic support moves forward, and the roof collapsed coal blocks 81 are not strung into the filling space under the cover of the cover beam 2, and the gangue filling material is transported to the end of the bottom discharge scraper 7 through the belt, and the bottom discharge scraper scraper 7 Afte...

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Abstract

The invention provides a caving type gangue filling hydraulic support and a filling method, the caving type gangue filling hydraulic support is composed of a top beam, a shield beam, a base, four stand columns connected between the top beam and the base, and a reverse four-bar linkage, the shield beam and the reverse four-bar linkage base are connected through a supporting oil cylinder, a straddle type platform connected with the base is arranged below the shield beam, and the straddle type platform is connected with the base. The platform is provided with a bottom-discharging type waste rock leaking scraper, and waste rock fills a goaf through waste rock leaking holes; for a top coal caving filling working face, a filling method of coal cutting, frame moving, forward pushing and sliding, gangue filling, coal caving and backward pulling and sliding is provided. The working resistance of the filling hydraulic support is large, the caving shield effectively encloses the caving rock blocks or coal blocks at the tail of the support, a safe enclosure space is provided for the straddle type platform and filling, and no filling or less filling can be achieved; the straddle type platform is adopted to support the bottom discharging waste rock leaking scraper, the width of the working face and the lower filling space can be increased, parallel mining and filling operation can be achieved, and the purpose that the same fully-mechanized mining filling working face can not be filled, can also be filled less and can be filled more quickly is achieved.

Description

technical field [0001] The invention relates to the field of gangue filling in coal mines, in particular to a roof caving type gangue filling hydraulic support and a filling method. Background technique [0002] Coal mines emit a large amount of gangue during production. The traditional method is to pile it directly on the surface to form the unique surface feature "buildings" of coal mines, that is, gangue hills. According to statistics, the accumulative stacked coal gangue currently exceeds 5 billion tons, and there are more than a thousand large-scale gangue dumps, and the accumulated amount is increasing at a rate of 150 to 200 million tons every year. However, coal gangue generated during coal production and processing not only occupies a large amount of land, but also causes spontaneous combustion, polluting the air and groundwater. With the tightening of environmental protection policies, the state has successively issued a series of gangue disposal and utilization p...

Claims

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Application Information

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IPC IPC(8): E21D23/04E21F15/02E21F15/06
CPCE21D23/0481E21F15/02E21F15/06
Inventor 吴玉意朱磊徐凯刘治成王瀚秋赵萌烨刘文涛秋丰岐程海星张新福古文哲
Owner 中煤能源研究院有限责任公司
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