Simulation of the full phenomenon of mass movement disasters using a multi-stage particle method

我研究的主要目的是开发计算机程序，以便使用一种称为平滑粒子流体动力学（SPH）的方法来模拟滑坡事件。考虑到这一点，我已经开发了两种不同的技术，可能适用于取决于滑坡的启动过程：土-水强耦合制剂，当滑坡是由孔隙水压力的增加（例如，大雨事件）;以及多物理方法，当主要不稳定性源是外力时（例如，地震）。我在各种国际会议上介绍了上述第一种方法，并在《计算机与岩土工程》杂志上发表了一篇论文。至于第二种方法，我已经向同一家杂志提交了一篇论文，它可能很快就会被接受。第二种方法是基于固体力学和流体力学的耦合，能够准确地模拟土体的应力状态和流体力学的拓扑变化。结果，我能够模拟出著名的阿索滑坡作为地震荷载作用的自然结果。据我所知，这是第一次用SPH方法模拟这种现象从开始到传播的过程。

The primary objective of my research was to develop computer programs in order to simulate landslide events using a method called Smoothed Particle Hydrodynamics (SPH). With this in mind, I have developed two different techniques that might be applied depending on the initiation process of the landslide: a soil-water strong coupling formulation, when the landslide is initiated by the increase of pore water pressure (e.g., heavy rain events); and a multi-physics approach, when the primary instability source are external forces (e.g., earthquakes). I presented the first method described above in various international conferences and published one paper in Computers and Geotechnics journal. As for the second method, I have submitted one paper to the same journal and it may be soon accepted. In special, the second method is based on the coupling of Solid Mechanics with Fluid Dynamics in a way that can accurately simulate the stress state of the soil as well as the changing of topology, characteristic of Fluid Dynamics. As a result, I was able to simulate the famous Aso landslide as a natural consequence of the earthquake loading applied to it. As far as my knowledge, this is the first time in which this phenomenon was simulated from initiation to propagation with the SPH method.