Abstract: Composite in order to solve the fault medium coal caving roadway supporting technology problems in Zaoyuan coal co., LTD., fault zones repose of composite roof coal roadway as the research object, by analyzing the deformation of roadway surrounding rock instability mechanism, in repose of composite roof coal roadway internal and external bearing structure control theory and "three strengthening a optimization" supporting principle as the instruction, proposed the "four high" anchor strengthening supporting technology, long prestressed anchor cable reinforcement technology and the high broken roof help anchor beam reinforcement technology of roadway surrounding rock control technology. Mine pressure observation data show that the fault zone composite medium coal caving roadway supporting principle of science, and supporting technology is advanced, the surrounding rock deformation of roadway has been effectively controlled.

Key words: fault zone, granular coal, composite roof, surrounding rock, rinciple