Study on the Dynamic Stability of an Underground Engineering Rock Mass with a Fault-Slip Seismic Source: Case Study of a URL Exploration Tunnel

The application of fault-slip seismic sources is critical to the success ground motion dynamic response analysis. Previous research established a finite source analyze stability in underground engineering. In this paper, sophisticated numerical method based on distinct element (3DEC) proposed simulate an laboratory (URL) exploration tunnel. Two indices, i.e., peak velocity (PGV) and strain energy density (SED), are used sensitivity types, radius, rupture velocities rock mass response. simulation results indicate that circular can be so boundary produces small singularity, with having remarkable influence PGV SED. addition, we consider more suitable for engineering practices. A has been developed allows URL further explored.