Analysis on Characteristics of Surrounding Rocks of Roadway and Bearing Structure Based on Stress Regulation

To address the prominent status of great deformation and difficult maintenance roadway under high stresses, this study investigated mechanical characteristics surrounding rocks bearing structural stability in a adjustment redistribution stresses through theoretical analysis, numerical simulation, engineering field test. Stability forms structure were analyzed by using axis-changing theory from perspectives rock, properties roadways, rock stress distribution, mechanism structure. It is suggested that distribution state improved optimized unloading reinforcement construction. A model excavation was constructed to analyze influences spatial effect on releasing rocks. postpeak strain softening dilatation introduced investigate mass rupture residual zone plastic roadway. Moreover, we construction path unit model, which disclosed failure development simulation fields features after carried out FLAC3D program. Results demonstrate optimizes axial ratio zones both sides are supporting between distance two side peaks roof floor space equal coefficient horizontal pressure. In other words, final collapse mode long axis points same direction with maximum principal primary rock. Reinforcement forces form “Ω-shaped” structure, favor long-term