According to the deformation,failure and complicated migration law of the overburden strata above the fully-mechanized caving mining face,which is affected to the stability of the powered supports. Using the engineering practice of No. 1123 working face,the site-measurement,theoretic analysis and similar simulation experiment are applied to study the main factors of inclined,mining height and working resistance of support which are effect the stability of powered supports.The results showed that the influen...