Quantitative analysis of ultra-close fault dynamic rupture and seismic risks in deep roadway excavation.

ABSTRACT: This study presents a comprehensive numerical analysis of dynamic rupture and fault-induced seismic risks in deep roadway excavation environments, focusing on near-fault conditions. A quantitative assessment was conducted for faults within 5 m of the roadway, a critical range for evaluating heightened seismic risks. Our results demonstrate that within this proximity, fault slip and seismic moment increase significantly, with peak fault slip reaching 17.1 mm and seismic moment exceeding 3.9 × 10¹⁰ Nm. One of the key findings is the amplification effect of wave reflections along the exposed roadway surfaces, particularly in areas near the roof and sidewall. The peak particle velocity (PPV) on the roof reached 0.40 m/s, while the right sidewall recorded 0.49 m/s, highlighting eleva

SUBMITTER: Li Y 

PROVIDER: S-EPMC11909228 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature