Aiming at large mining height are broken double dynamic pressure under the influence of large cross section along the trough to the characteristics of Changping Mine, proposing coupling for equalizing supporting design concept, Introducing the elastic shape supporting design criterion and determine the basic parameters of coupling for equalizing supporting system, solved the problem of uneven force of bolts and cables, implemented multiple support dynamic pressure effect to support once. At present, this technology has been applied in the large section, high stress, large deformation, the soft rock support and dynamic pressure roadway of the Changping coal mine.