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Filling device and method for filling down-hole goaf by same

A technology for filling devices and gobs, which is applied in the direction of fillings, safety devices, mining equipment, etc., can solve the problems of high cost and high cost, and achieve the effects of low cost, widening width and saving filling materials

Inactive Publication Date: 2008-04-23
CHINA UNIV OF MINING & TECH (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Another method is paste filling technology, which is more expensive
[0005] Among the above two methods, water-sand filling requires sand as a material, and the filling water needs to be discharged from the mine, which is costly; paste filling technology has just started, and its cost is relatively expensive

Method used

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  • Filling device and method for filling down-hole goaf by same
  • Filling device and method for filling down-hole goaf by same
  • Filling device and method for filling down-hole goaf by same

Examples

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Embodiment Construction

[0026] A preferred embodiment of the filling device of the present invention is as follows: figure 1 As shown, it includes a compressor 9, a bin pump 7, an ash conveying pipeline 6, and a filler 8. The bin pump 7 receives and stores powdered filling materials supplied from the outside. After the compressor 9 adds compressed air to the bin pump 7, The filling material in the bin pump 7 is blown into the filling device 8 through the ash conveying pipeline 6, and the filling material is ejected by the filling device 8 to realize filling of the filling area. The ash conveying pipeline 6 here includes a ground part, a ground-to-downhole part, and a downhole part.

[0027] Storehouse pump 7 can be one, also can have multiple parallel connection or series connection, a plurality of storehouse pumps 7 can have a compressor 9 air supply, also can have many compressors 9 air supply.

[0028] Wherein, the compressor can adopt VFY-6 / 7-KB type air compressor, or the compressor of other mo...

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Abstract

The filling apparatus include one compressor, one storehouse pump, one ash conveying pipeline and one filling unit. After the compressor feeds compressed air to the storehouse pump, the filling material is conveyed through the ash conveying pipeline from the storehouse pump to the filling unit and jetted to the filled region. The filling unit includes one convergent pipe, one throat pipe, one diverging pipe, one rifling pipe and one water pipe. The filled region is first separated out from waste area in the mine and then filled with the filling material while mining coal in the working face. The present invention is simple, practical, low in cost and suitable for filling of various kinds of mine, especially coal mine.

Description

technical field [0001] The invention relates to an underground mined-out area filling technology, in particular to a device and method for filling an underground mined-out area by using powdery filling materials. Background technique [0002] my country is a large coal-producing country, and coal accounts for 73% of my country's total energy. At present, the coal extracted from the ground reaches two billion tons every year. At the same time, my country's "three downs" coal pressure is also very large, especially in the main coal-producing areas of the East China and North China Plains, where the land and villages are densely populated, and the problem of coal pressure under construction is very prominent. After mining underground coal or other mines, it will inevitably cause Surface subsidence, surface subsidence will lead to many catastrophic consequences such as damage to buildings, water bodies, cultivated land, railways, and bridges on the surface. Gob filling is an eff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/10
Inventor 高延法翟明华庞法扬李永亮牛学良胡春岭
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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