Roof cutting pressure relief protective method for exploitation stop face of fully mechanized working face

The invention relates to a roof cutting pressure relief protective method for an exploitation stop face of a fully mechanized working face, and belongs to the technical field of surrounding rock stability protection for a permanent tunnel by the fully mechanized working face. In the protection method, the exploitation stop face of the fully mechanized working face is preset between a coal mining tunnel area and a goaf, an overlying stratum layer over the exploitation stop face is cut vertically upwardly before that a three-machine system is evacuated from the exploitation stop face to obtain aroof cutting surface, the overlying stratum layer over the exploitation stop face is disconnected from the overlying stratum layer over the coal mining tunnel area by the roof cutting surface, so that when the three-machine system is used for support, stress connection between the overlying stratum layers over the exploitation stop face and the coal mining tunnel area is cut off rapidly. Influence of high stress of the o