Abstract：Based on model test，in-situ investigation，and theoretical analyses，the influencing factors on stability of rock mass surrounding coal-mine roadways 800～1000 m deep are studied. The mechanism for effects of high crustal stress，high-level permeable pressure，and high temperature gradient on the stability of deep roadways is concluded，and corresponding support method and technology are carried out which include a kind of bolts with initial support force of 30～50 kN and peak support force higher than 300 kN and their arrangement in surrounding rock，bottom bolts and their construction tools，fiber-optic monitoring technology for bolt stress for long term，and grouting technology for sealing fractures，cutting seepage off and reinforcing rock mass.
