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目前大部分边坡稳定性分析软件的地层建模采用基于线条的建模方法,这种建模方法手算工作量大,建模繁琐且不直观。本文基于拓扑理论和多边形图的性质,提出了基于区域的二维边坡地层建模方法。在确定边坡计算域多边形后,用户可以任意绘制地层折线,程序自动进行折线求交运算并截除边坡计算域外的部分,然后运用左转搜索算法将计算域分割成一个个地层多边形区域,可以包含复杂内岛等情况,以模拟工程地质剖面中的透镜体及人工处理的区域等。本文的地层建模方法具有多边形区域自动识别功能,减少手工计算量,可以明显地提高边坡稳定性分析软件的建模效率和可视化程度。
At present, most stratigraphic modeling of slope stability analysis software uses a line-based modeling method, which requires a lot of manual work and is cumbersome and not intuitive to model. Based on the topological theory and the properties of polygon graphs, a two-dimensional slope modeling method based on region is proposed in this paper. After determining the slope calculation domain polygon, the user can draw arbitrary layer polyline, the program automatically intersects the intersection of the calculation and cut off the calculation of the slope outside the part, and then use the left turn search algorithm to divide the calculation domain into a polygon area, Complex inland islands may be included to simulate the lens body in the engineering geological section and the area to be artificially processed. The stratum modeling method of this paper has the function of automatic recognition of polygons, which can reduce the manual calculation and improve the modeling efficiency and visualization of slope stability analysis software obviously.