STUDY ON TECHNIQUE AND TEST OF SURROUNDING ROCK CONTROL OF DEEP SHAFT COAL ROADWAY
深井煤层巷道围岩控制技术及试验研究

The deformation feature of deep shaft coal roadway is analyzed, and the reason for many kinds of support failures is studied. The coupling balance supporting principle of inner and outer structures is put forward for these roadways. For surrounding rock control of deep shaft coal roadway, it is necessary for the high strength supporting structure to take part in the redistribution of stresses in surrounding rock after excavation, so as to decrease the strength damage of coal. Thus the stable bearing structure can be formed rapidly around the roadway, and the area of plastic fluid zone of surrounding rock can be reduced. The industrial test shows that the supporting principle is correct.