The Critical Indicator of Red-Bed Soft Rocks in Deterioration Process Induced by Water Basing on Renormalization Group Theory

The internal damage of red-bed soft rock induced by water is pervasive. accumulation, growth, and localization a multi-scale process that can lead to significant strength loss in rock. Yet, research on the critical state deterioration considering failure limited due high degree system freedom. Renormalization group theory an effective approach find point phase transition disordered system. To apply renormalization rocks, this article firstly analyzed their microstructures. Then, granular unit model stripy are proposed describe self-similar characteristics rocks. calculation results based consistent with experimental results. reductions 60% light-yellow silty mudstone 80% grey mudstone. In addition, propagation caused stress also studied analytical solution derived. Results show effectively couple micro which provides guidance engineering.