Abstract: According to the mining situation of 8# coal seam,the stability of coal pillar and the height of the caving zone and fractured zone of the type of roadway mined-out area are analyzed by adopting theoretical analysis method. The anlaysis results show that, although the deformation of the coal pillar of 8# coal seam is large but it will not collapsed integrally, besides that, the 5# coal seam is located in the fracture zone of 8# coal seam. The deformation situation of 8# coal seam roof under different conditions are simulated and calculated by adopting the UDED software, the results show that, the total settlement value of coal seam is small and the tilt is small too. According to the above research results, 5# coal seam of the upper of the type of roadway mined-out area is mined successfully, and it has some guidance role to the similar coal seam working face.

Key words: Type of roadway mined-out area, Upward mining, UDEC