Continous–discontinous analysis of an unstable slope: evolution of damage zones and potential influencing areas
This study examines a continuously deforming slope in Nanjing, China, which has been active since 2003. The Continuum-Discontinuum Element Method (CDEM), a hybrid finite-discrete framework, was applied to simulate damage evolution and predict potential impact zones. A seepage model incorporating hydro-mechanical coupling was utilized to assess the slope's current condition. To evaluate stability, the strength reduction method was employed, yielding a factor of safety (FOS) of 1.24, indicating a marginally stable state. The potential sliding mass was estimated at approximately 2 million cubic meters. Based on the stability analysis, a Particle Flow model was developed to simulate the potential landslide's impact areas.
The results indicate that the average velocity of the sliding mass could reach 3.94 m/s, resulting in a deposit with a width of 602.9 m and a length of 831 m, potentially obstructing the nearby national highway. Given these findings, the implementation of comprehensive proactive defense measures is recommended to safeguard lives and property.
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