Abstract: Aiming at the specific geological mining conditions of 2612 working face in Dongpang Mine，using the experience estimation method, the "voussoir beam" theory, the roof classification method, the dynamic load calculation method, with the help of the site measurement and comparing with the principle and results of four kinds of calculation methods，this article calculated support working resistance of 2612 working face during depression mining , up-dip mining, nearly horizontal mining phase, and concluded that the powered support of ZY10800/30/65D would meet the production requirements; the support working resistance of up-dip mining is largest；the dynamic load method can determine the support working resistance of fully mechanized mining face with large mining height.