Gob-side entry retaining goaf gangue blocking sealing structure and manufacturing method thereof

Abstract

The invention discloses a gob-side entry retaining goaf gangue blocking sealing structure and a manufacturing method thereof, and belongs to the technical field of mine safety. The gob-side entry retaining goaf gangue blocking sealing structure comprises an inner layer, a supporting layer and a protective layer which are tightly attached from inside to outside, wherein the inner layer comprises afirst net layer and a second net layer, and a cloth layer is arranged between the first net layer and the second net layer; the supporting layer comprises a plurality of supporting columns, the supporting columns are compacted on the second net layer, and the two ends of the supporting columns are embedded into a roadway top plate and a roadway bottom plate correspondingly; and the cloth layer, the second net layer and the supporting columns are all sprayed with the protective layer, and the protective layer is made of an inorganic sealing material. The invention further discloses the manufacturing method of the gob-side entry retaining goaf gangue blocking sealing structure. According to the reserved roadway section size, a sheet-shaped material is cut, and the gob-side entry retaining goaf gangue blocking structure is manufactured through the convenient and easy preparation method. Through goaf roadside gangue blocking and sealing, an effective construction method is provided for thegas penetration problems such as air leakage and gas leakage in a coal-pillar-free gob-side entry retaining goaf roadway.

Description

technical field [0001] The invention belongs to the technical field of mine safety, and relates to a gangue-retaining closure structure for gob-side entry retaining and a manufacturing method thereof. Background technique [0002] Due to the particularity of the roadway retaining process without coal pillars, gangue retaining support is required on the goaf side of the retaining roadway. The currently used gangue retaining effect is poor, resulting in gas The phenomenon of air leakage and gas leakage in the roadway is not conducive to the development of underground fire prevention and gas control in the goaf. It is necessary to invent a new closed structure for retaining gangue to strengthen the gas control and fire prevention management along the goaf. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a goaf retaining structure and a manufacturing method thereof. S...

AI Technical Summary

Problems solved by technology

[0002] Due to the particularity of the roadway retaining process without coal pillars, gangue retaining support is required on the goaf side of the retaining roadway. The currently used gangue retaining effect is poor, resulting in gas The phenomenon of air leakage and gas leakage in the roadway is not conducive to the development of underground fire prevention and gas control in the goaf. It is necessary to invent a new closed structure for retaining gangue to strengthen the management of gas control and fire prevention management along the gob.

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