Full-closed coal mining device for soil-like coal working face and coal mining method of full-closed coal mining device

Abstract

The invention provides a full-closed coal mining device for a soil-like coal working face. The full-closed coal mining device comprises a hydraulic bracket, a carbon fiber net and a coal mining machine, wherein the hydraulic bracket is a supporting covering type hydraulic bracket, and comprises a top beam, an end protective plate, a telescopic beam, a covering beam, a front vertical column and a rear vertical column; the carbon fiber net is laid above the hydraulic bracket; the rear part of the covering beam is covered by the carbon fiber net, and the carbon fiber net located at the rear part of the covering beam is laid along the side wall of gangue; one end of the carbon fiber net is fixed at the bottom of the gangue, and the other end of the carbon fiber net drops down from the front end of the end protective plate; the carbon fiber net is jacked on a coal wall through the telescopic beam and the end protective plate; and one end of a steel wire rope is fixed on a manual winch, and the other end of the steel wire rope is fixed at one end, which drops down, of the carbon fiber net after penetrating through a pulley. The coal mining device provided by the invention can enable a worker to be in a state where the bracket, a top plate and the coal wall. The invention further provides a coal mining method of the coal mining device. The coal mining device and the coal mining method are easy to operate, safe and effective.

Description

technical field [0001] The invention belongs to the technical field of coal mining, and in particular relates to a fully enclosed coal mining device and a coal mining method for an earthy coal working face. Background technique [0002] According to relevant data, in my country's primary consumption structure, coal accounts for 70%, and it will still account for more than 50% by 2050. Coal will always be the dominant energy source in my country for a long period of time. [0003] With the continuous increase of mining depth and mining intensity, the technical conditions of mine mining are more complicated, and the problems of soft roof, soft floor and soft coal seam are gradually highlighted, especially when working in broken and loose soil-like coal and rock masses that resemble soil but not soil. In the mining area, the safety control of the surrounding rock in the stope is particularly prominent. Accidents such as chipping, leaking, and leaking occur frequently, which bri...

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Problems solved by technology

[0003] With the continuous increase of mining depth and mining intensity, the technical conditions of mine mining are more complicated, and the problems of soft roof, soft floor and soft coal seam are gradually highlighted, especially when working in broken and loose soil-like coal and rock masses that resemble soil but not soil. In the mining area, the safety control problem of the surrounding rock in the stope is particularly prominent. Accidents such as chipping, leaking, and leaking occur frequently, which bring great safety hazards to the production and management of the working face and greatly reduce productivity.

[0004] At present, the conventional domestic coal mining method is to use chemical grouting materials to prevent the sides and roof caving, and use conventional brackets to support the roof. The effect of prevention and control of slabs and roof fall in the working face is not very good, and the safety of coal mining in the working face cannot be guaranteed

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