Research On Prediction And Construction Technology Of Deep Buried Tunnel Rock Burst

The paper depends on the Daxiangling mud mountain tunnel engineering. The tunnel is the typical deep buried tunnel, highland stress, poor geological conditions, a problem faced by the project, in order to cope with this series of technical problems often encountered in deep buried tunnel. Therock-burst prediction, prevention and construction problem along tunnel, which is the key and bottleneck project of the tunnel, were researched according to field testing, indoor test, combined with the corresponding theoretical analysis and numerical simulation.Tunnel rock burst typically occurs at a higher stress, greater depth, the full extent of the high rock, under lithology brittle case, there is not a set of mature theory in use of prediction it because of complicated problems existing in the of rock burst in underground engineering and many of factors that impact the happening of rock burst, This paper is depended on the basis of the tunnel monitoring and site investigation, the test of secondary stress after excavated on the tunnel is an excellent method on rock burst prediction.Numerical simulation aspects, taking into account spatial and temporal effects of rock burst, according to the actual geological conditions tunnel site, the use of finite element software FLAC establish a corresponding model to analyze the law and features of different situations studied rock burst, based different sections of rock burst prediction project to provide a certain basis. The use of pore deformation testing techniques for different sections of the project were to stress test for rock burst prediction provides situ stress data.Finally, through the study of Highland Rock Blasting lots of stress, in order to prevent the construction of rock burst disaster caused by a variety of means of investigation of tunnel rock burst prevention, combined with the actual situation of the project proposed for the different rock bursting tunnel rock burst prevention measures taken under the degree conditions for safe construction under similar geological conditions tunnel rock burst provide some guidance.