Abstract
Investigating the interaction between tunnel landslide systems and stabilizing piles is crucial for mitigating landslide motion and ensuring the protection of tunnels in tunnel engineering. This study introduces a novel approach to evaluate the stability of the pre-pile region in tunnel-landslide systems with stabilizing piles. The method relies on the Bishop method and integrates displacement method analysis to account for the maximum resistance of stabilizing piles under tunnel resistance conditions. These calculated results are compared to actual engineering monitoring data and numerical simulation values, validating the efficacy of the proposed approach. Additionally, an analysis of critical parameters, including the pile spacing, landslide angle, and tunnel depth, was performed. The results indicate that as the pile spacing increases, the stability coefficient (Fsfront-pile) in the front pile zone of the tunnel landslide system progressively decreases, whereas the ultimate resistance (Pgu) of an individual pile increases linearly. As the landslide angle increases, the stability coefficient (Fsfront-pile) of the slope in front of the pile significantly decreases, whereas variations in tunnel depth exert a comparatively minor influence on the stability coefficient.
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