Abstract: Aiming at the problem of supporting for coal roadway in “three soft” coal seam，the deformation and fracture characters of surrounding rock and the interaction relationship between the surrounding rock and the support are analyzed，especially the problem of dynamic mechanical response to the support from the surrounding rock and so on.The dynamic support technology which takes new high-strength support methods including left-lateral high-strength pre-stressed anchor and m-shape steel strip and ultra high strength yield anchor cable and anchor cable beam and so on as key technologies are put forward from the whole process including the optimal supporting scheme and the optimal supporting time and the late reinforcement.This supporting technology has been applied successfully in 22071 roadway in Zaoyuan coal mine and can be served as a reference to the similar seam roadway.

Key words: “Three soft&rdquo, coal, Whole process of support for roadway, High-strength support, Dynamic support, Engineering practice