Flexible airbags for coal working face and method adopting same to block off corners

Abstract

The invention relates to flexible airbags for a coal working face and a method adopting the same to block off corners. Each flexible airbag comprises an airbag body and a fixed ring arranged on the periphery of the airbag body; wherein the airbag body comprises an inner container and an outer container; and air inlet valves and pressure releasing valves are arranged on both the inner container and the outer container. The method comprises the following steps: firstly, single props are arranged at upper and lower corners of the coal working face at intervals, and are fixed between a top plate and a bottom plates of a roadway; the single props are positioned in the same plane parallel to the coal working face; one flexible airbag for the coal face is arranged on the side, far from the coal working face, of each single prop; the flexible airbags are fixed on the single props to inflate the single props; and the upper corners and the lower corners of the flexible airbags for the coal working face, filled with air, are filled by the flexible airbags. The flexible airbags are simple in structure, convenient to use, and good in block-off effect. The method realizes the mechanized blocking off, and not only is high in efficiency and good in block off effect, but also reduces the labor intensity of workers greatly.

Description

technical field [0001] The invention relates to a coal mine safety device, in particular to a flexible air bag and a sealing method using the flexible air bag. Background technique [0002] During the coal mining process, in the corners, in order to isolate the fresh air from entering the goaf as much as possible, avoid the spontaneous combustion of the remaining coal in the goaf, and at the same time prevent the gas from being brought out of the goaf by the wind to affect the gas concentration of the working face At present, plastic woven bags filled with crushed coal are generally used in mines to block corners with single pillars. This method has low work efficiency, and to a certain extent, it also causes a waste of resources and greatly increases the labor costs of workers. Labor intensity affects the economic benefits of coal mines. Contents of the invention [0003] The primary purpose of the present invention is to provide a flexible airbag for coal mining face, w...

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Problems solved by technology

[0002] During the coal mining process, in the corners, in order to isolate the fresh air from entering the goaf as much as possible, avoid the spontaneous combustion of the remaining coal in the goaf, and at the same time prevent the gas from being brought out of the goaf by the wind to affect the gas concentration of the working face At present, plastic woven bags filled with crushed coal are generally used in mines to block corners with single pillars. This method has low work efficiency, and to a certain extent, it also causes a waste of resources and greatly increases the labor costs of workers. Labor intensity affects the economic benefits of coal mines

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