库岸滑坡地质灾害三维演变动态显示方法

Method of Dynamic Evolution Process Display for Reservoir Landslide Geological Disaster in 3D Scene

以澜沧江糯扎渡水电站某大型滑坡为例,在数值分析计算的基础上,运用集大规模数据运算和可视化为一体的IDL语言研究并实现了三维场景中滑坡滑落、滑坡入水激起涌浪以及涌浪传播3个过程的动态集成显示方法。首先,对数据更新部分进行数据提取以及分离运算,以此降低数据更新的难度;其次,将三维滑坡场景细分成地形、滑坡体和河道水面3个对象,以提高每一个部分的可控制性;最后,将滑坡滑落过程、滑坡入水激起涌浪过程以及涌浪的传播过程集成为一个动态整体,再现了滑坡地质灾害演变过程。结果表明,整个滑坡动态演变过程之间衔接平稳,各对象数据操作简便,对象的可控制性高,整体稳定性好。

Taking one typical huge landslide in Nuozhadu hydropower station in Lantsang as example,on the basis of data analysis and practical operations,dynamic and integrated display methodology for the process of landslide sliding,water swelling when the slide falls into water and the waves spreading in 3D scene by IDL programming language was developed and completed.This approach integrated the ability of massive data calculation and visualization.First,the operation of extraction and separation for the data updated were completed,which would reduce the difficulties in updating the data.Second,the 3D scene was divided into three models:terrain,landslide and river.And each model would be controlled much better.Last but not least,integrating the process of landslide sliding,water swelling when the slide falls into water and the waves spreading into a dynamic entirety was realized,and the evolution process of landslides was redisplayed.The results show that each model of the whole dynamic evolution process connects well,and the data operation for each model is simple and controllability is good.So,all above proves that the method developed in this paper is effective for dynamic evolution process display for reservoir landslide geological disaster in 3D scene.