Abstract: Taken the Beijing Da'anshan Coal Mine as an engineering background, research and analysis were done on abutment pressure distribution of coal seams inclined coal pillars and propagation law by adopted theoretical analysis and numerical simulation with the existing of inclined coal pillars. The related results show that transmit deepness of abutment pressure of coal seams inclined coal pillars was large, stress along vertical direction of coal(coal pillars) presented oval down ladder distribution, but the influence range only was large at adjacent coal seam were obtained. Left 20m coal pillar at upper coal seam could produced stress concentration at lower coal seam, while coal pillar arranged on one side of goaf hardly effected the distribution of rock stress of lower coal seam. This result has a certain significant guidance for both safe production and support design of working face under the condition of coal seams inclined coal pillars.

Key words: Coal seams, Inclined coal pillar, Abutment pressure, Numerical simulation