Layered false roof retaining method on solid filled coal face

The invention discloses a layered false roof retaining method of a solid filled coal face. The method comprises the following steps: (1), reinforcing and supporting a roof plate before retaining a false roof; (2) layering the false roof according to lithology, thickness and inbreak conditions of the false roof; (3) reinforcing the edge region of a first layered false roof; (4) gradually adjusting a bracket to below the first layered false roof, and supporting the first layered false roof; and (5) continuing adjusting the bracket after the work face is stable so as to retain other layered false roofs. In the whole layered false roof retaining process, the filling quality in goaf is guaranteed, and the goaf is filled with the solid. The method disclosed by the invention is simple, safe and reliable, the work face can fast transit to the normal stage of the false roof retaining exploitation from the stage of the false roof mining exploitation; and meanwhile, the recrement content in raw coal is reduced, the recovery ratio of the coal resource is improved; the method provides a practical, efficient and economic technical scheme for the false roof retaining exploitation under similar condition in China.