Mining Research on Replacement Coal by Filling Gangue in Roadway of Coal Mine Underground

Aiming at the problems of coal resources recovery under buildings and underground gangue treatment,mining research ideas of gangue filling and filling schemes are proposed,gangue filling system is established too.Improving existing ribbon conveyor to tail-driven belt conveyor which transport gangue,the roadway is filled by gangue filling machine.The amount of rock engineering of filling system is reduced by using discarded roadway arrangement filling system,which reduces the cost of the project.