<p>The stability and safety of deeply buried roadway groups in geotechnical engineering are often compromised by disturbances from activated fault structural planes. Although previous studies have explored fault effects or roadway instabilities individually, systematic investigation into their coupled influence, particularly under varied fault dip angles and roadway layouts, remains limited. This study systematically investigates the impact of varying fault dip angles and roadway configurations on failure mechanisms and acoustic emission (AE) responses under confined static loading. The analysis focuses on unstable crack propagation, AE precursors to instability, and macroscopic failure. The results show that crack propagation typically initiates vertically from the structural plane and extends toward a specific hole. AE analysis reveals a sharp increase in cumulative counts during the late plastic and post-peak stages. Double-hole samples exhibit a concave upward trend in cumulative AE counts, with an initially slow rate that accelerates over time. Conversely, triple-hole samples show a rapid initial rise followed by a stepwise increase. Frequency domain analysis aligns with these observations, demonstrating consistent patterns. These insights contribute to a deeper understanding of the coupled deformation between fault planes and roadway groups, offering theoretical guidance for early warning and risk mitigation in deep excavations. The findings provide a theoretical basis for improving roadway design and enhancing dynamic disaster monitoring in complex geological environments.</p>