Research conclusions:From the prediction of rock outburst in two phases, it is known that compared with the state in the pas,t the length ofslightrock outburstareawas reduced, but the length ofmedium rock outburstareawas almost the same, and generally the rock outbursthappens in the side wall of tunne.l Therefore, criterion ofRussense is the most suitable toCangling Tunne,l and the stress of internal structure in the tunnel obtained from the research in the early -stage is comparatively accurate. With the means of theoretic analysis and real test and combined with the prediction mode for rock outburstin two phases, the rock outburstin certain area in frontof theworking face ispredicted correctly.Thismethod is feasible forpredicting the rock outburst.