Coal gangue mining system and method

Abstract

The invention discloses a system and a method for simultaneous mining of coal gangue, relates to the technical field of coal mining, and solves the problems of difficulty in transporting and filling materials to the underground from the surface, and high filling cost. The system comprises a coal mining machine and a support, wherein a section return airway is arranged on the upper end of the support, a section transportation lane is arranged on the lower end of the support, the system is characterized in that the support is a dual conveyor caving coal support comprising a front conveyor and a back conveyor, the front conveyor is connected with a machine lane belt conveyor arranged in the section transportation lane through a machine lane reversed loader, the back conveyor is connected with an airway belt conveyor arranged in the section return airway through the machine lane reversed loader, the airway belt conveyor is connected with a crushing chamber of a filling region, and the crushing chamber is connected with a stirring machine through a belt conveyor. The system and the method are suitable for simultaneous mining of the coal gangue in a mining area, which can be let down at a softer top plate top rock of a subsidence area, and can provide a large amount of cheap filling aggregates for the other locally filled mining area or gob-side entry retaining roadside support.

Description

Technical field: [0001] The invention relates to the technical field of coal mining, in particular to a coal gangue simultaneous mining system and method. Background technique: [0002] At present, the top-coal caving mining method occupies a large proportion in the mining of thick coal seams in coal mines, and its efficiency and benefits have good effects. With the continuous development of mining machinery, the top-coal caving support has been continuously improved, and the fully mechanized caving method has been quite mature. . Its main principle is to arrange a long-arm working face with a mining height of 2~3m along the bottom of the coal seam (or section) in thick coal seams, carry out mining with conventional methods, use mine pressure or supplement artificial loosening methods to make the supports The top coal above is crushed and released into bulk from behind (or above) the support, and transported out of the working face via a scraper conveyor. [0003] In the f...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a coal and gangue simultaneous mining system and method that can meet the needs of underground filling materials, which can solve the problems in the prior art that it is difficult to transport filling materials from the ground to the underground, and the filling cost is high. At the same time, it can Effectively protect the surface environment from damage

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