... containing damp of block rock mass to explain the anomalously low friction phenomenal in theory. Cui[12] et al. showed the influ- ence of friction fault by lateral stress disturbance, the experiment indicated that stress drop increasing by lateral disturbance may cause the anomalously low 501 friction...

...Rock Characterisation, Modelling and Engineering Design Methods Feng, Hudson & Tan (Eds) © 2013 Taylor & Francis Group, London, ISBN 978-1-138-00057-5 Correlation between time-delayed rockburst and blasting disturbance in deep-buried tunnel Z.N. Zhao, X.T. Feng & T.Y. Chen Key Laboratory...

... disturbance, characteristic modes which compose of specific displacement vectors around the tunnel wall are determined. The linear independency of character- istic modes is checked and common deformed shape of a circular tunnel is decomposed into these characteris- tic modes. Typical loading increments...