Research on Three-Dimensional Visualization System for Landslide and Mud-rock Flows based on Direct3D and SPH Methods

摘要

This paper converts DEM data to 3D terrain by using Direct3D technology, then, creates landslide on the 3D terrain, and simulates landslides and mud-rock flows during the whole process in time by using Smoothed Particle Hydrodynamics methods. The landslide is abstracted to particle swarm of Direct3D in this simulation, each particle movements in the gravity, pressure and viscous force between particles and other physical forces so that implements three-dimensional and dynamic simulation of landslides and mud-rock flows. The extent of landslides and mud-rock effects is reached by estimating the real time location of particles, thus we can make early warning of the extent of landslides and mud-rock effects and provide technical support for disaster prevention and mitigation work.