Abstract: In order to solve the problem of roof falling and rib spalling when Tang Jiahe 1813 mechanized mining face cross over anticlines. Use FLAC3D software to simulate the method 1813 Face crossing over anticline. Analyze the change of plastic zone, the stress range of workface supporting, the relative displacement of roof and floor under different mining method. Compare the advantages and disadvantages between two methods. The result shows, for crossing over anticlines of inclined coal seam, floor-excavating and roof-keeping straight mining method or relaxed curve mining method should be more used to control the stress of coal wall, floor and roof to ensure producing safety. Propose the corresponding control method of roof falling and rib spalling in different parts of workface: the upper face should use chemical agent to strengthen the coal wall; the middle face should excavate floor and keep roof; the lower face should use secondary support and man-made roof to cross over anticlines.