基于GIS空间数据库的三维边坡稳定性分析

3D SLOPE STABILITY ANALYSIS BASED ON GIS SPATIAL DATABASE

结合GIS的空间数据分析功能和改进的Hovland三维边坡稳定分析模型,提出一个全新的基于GIS空间数据库的三维边坡稳定分析模型。假定初始三维滑动面为椭球形,研究采用Monte-Carlo模拟方法搜寻最危险滑动面。全部分析研究程序采用VB和GIS控制软件编制。利用GIS的空间数据处理分析功能,各种可能滑动面所需输入数据可以方便地得到,而且结果也能方便地在数字地图上表示和分类。

Combining the GIS spatial analysis function with an improved Hovland 3D slope stability analysis mode,a new GIS based 3D deterministic model is developed. Assuming the initial slip as ellipsoid,the 3D critical slip surface is determined for the analysis of 3D slope stability by means of minimization of the 3D safety factors by using Monte-Carlo random simulation. In the analysis program,the analysis of slope stability can be easily processed and managed,and the results can be easily showed and reclassified on the spatial map.