滑坡体三维构造及稳定性分析

3D Modeling and stability analysis of landsliding mass

采用体元技术建立滑坡体真三维模型,通过基本三棱柱体构建具有复杂曲面结构的空间组合体,每个单元都赋予不同的属性,为滑坡体三维稳定性分析提供基本的前、后处理功能。以此为基础,并结合三维极限平衡分析计算方法,开发了相关的滑坡三维模拟与稳定性分析软件,并成功应用于清江库岸大型滑坡的三维仿真计算。

The present paper introduces a method on real 3D modeling of landsliding based on the intergradation of several kinds of space data such as aerial photos, DEM, boreholes, geographic map and geological map, etc. Tfi-prism elements arc used to build the multilayer geological structure of the land-sliding area. With incising and decomposing by anti from each other, the tri-prisms possess the different properties according to the different structures. The paper has also developed an interactive visualization software for 3-D modeling and limit equilibrium analysis of landsliding mass. The above mentioned application of the modeling and the investigation results of the paper show that our method can deal with complex geological structure of landslidings. Real 3D Modeling of Land-sliding provides a visual measure and has great application potential in the monitoring and prevention of geological hazards.