Analysis of Mechanism of Typical Static and Dynamic Geo-mechanical Phenomena in Deep Block Rock Mass

摘要

The typical static and dynamic geo-mechanical phenomena in deep block rock mass proposed by Russian academician Shemyakin E I and Kurlenya M V are analyzed theoretically, including zonal disintegration phenomenon,anomalous low friction phenomenon, and pendulum-type wave phenomenon. The mechanism of zonal disintegration phenomenon is revealed by analyzing stressed-strained state (SSS) of the enclosing rock mass in the maximum stress zone around deep tunnel, the analytical critical depth condition for the occurrence of zonal disintegration phenomenon is obtained. Based on the anomalous low friction tests carried by Kurlenya M V, one-dimensional mechanico-mathematical model is established, the analytical solution of transverse displacement of working block is obtained. By comparison of the numerical results and experimental data. the geo-mechanical condition and mechanism of anomalous low friction phenomenon is presented. Based on the international research of pendulum-type wave, the main characteristics and corresponding changing laws of pendulum-type wave are summarized, which reveals that the mechanism of pendulum-type wave phenomenon lies in the quasi-resonances effect of deep geo-blocks under the impact of definite external pulse.