【摘要】 针对滑坡模拟中缺乏基于实景三维场景计算分析方法的问题，该文采用颗粒流离散元法对地质滑坡破坏运动过程进行数值模拟，并基于实景三维技术开展大规模滑坡时空过程的模拟与交互分析，探索地质滑坡体在真实环境与数字空间中的互馈研究方法。通过结合岩土力学数值计算与实景三维仿真技术，实现了地质滑坡颗粒流与大规模粒子系统的衔接，构建了数字孪生模型，模拟了滑坡的蠕滑、推挤和堆积等关键运动环节，揭示了″滑-推-堵″的时空运动机理。以重庆市巫溪县广安村滑坡为实例，完成了从颗粒建模、力学计算到可视化仿真与参数调优的全过程，模拟了滑坡对周边道路和江水的影响，为研究滑坡破坏规律、运动机理及环境评估提供了参考。更多还原

【Abstract】 To address the issue of lacking computational analysis methods based on real-world 3D scenarios in landslide simulations, the numerical simulations of the failure and movement processes of geological landslides was conducted in this paper by using the particle flow discrete element(PFC^3D). The large-scale spatiotemporal landslide simulations and interactive analyses were integrated based on real-world 3D technology, aiming to establish a method for bidirectional research on landslide bodies in real environments and digital spaces. The research combines geotechnical mechanics numerical calculations with real-world 3D simulation technologies, seamlessly linking geological landslide particle flows with large-scale particle systems. The digital twin coupling models were built and movement processes within realistic 3D digital geographic environments was simulated. This approach vividly and effectively demonstrated key stages of landslide processes, including creeping, pushing, and accumulation, and elucidates the spatiotemporal motion mechanisms of “slip-push-block”. Using the Guangan Village landslide in Wuxi County, Chongqing, as a case study, the particle modeling, mechanical calculations, particle motion simulation, real-world 3D visualization, and parameter optimization were validated, achieving landslide process simulations, road burial analysis, and damming effects in a digital environment. The results provide references for studying the failure patterns, motion mechanisms, and environmental impact assessments of similar landslides.更多还原