Stability Analysis of a Tunnel Nearby Folded Strata Using Numerical Modeling

The stability of underground structures, like mines and tunnels, has always been a major concern in the field of underground space development works.Reliable prediction of tunnel stability is a key challenge for tunnel engineering, especially when drilling in folded rock masses.Folded strata are layers of rock that have been folded and deformed by tectonic forces.This can create complex geological structures that are difficult for tunnel engineers.This research aims to investigate the stability of tunnels through folded strata (anticline, syncline, and fracture zones).Failure Sequence of the tunnel is simulated using finite difference software.The results of the simulations are analyzed to identify potential failure mechanisms and assess their likelihood and consequences.Based on these simulations, innovative techniques (position and number of tunnels) are developed to enhance tunnel stability in the fold-rich region.The results suggest that FDM software can be used to identify potential areas of instability and to design appropriate mitigation measures.This could help to reduce the risk of tunnel collapse and improve the safety of tunnels in areas with folded strata.