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本文提出的“断面节点控制法”通过建立少量的以地质勘探剖面图为基础的主控制断面 ,经主控制断面二维网格划分、次控制断面衍生和运用多种合拆、连接及插值方法 ,对含有大型地下洞室群的复杂地层 ,进行了可供渗流有限元计算的三维空间计算网格的自动生成。该法较好地解决了当计算对象边界复杂、材料分区多变、研究区域庞大时 ,给自动形成三维有限元网格带来的不便和困难。多个工程实例应用表明 ,该法运用简单、适应性强、效率较高。
The section control method proposed in this paper establishes a small number of main control sections based on the geological prospecting sections, the main control section two-dimensional grid division, the secondary control section derivation and the use of a variety of combination, connection and interpolation methods , A complex three-dimensional space containing large underground caverns was constructed. The three-dimensional space-calculating grid for seepage finite element calculation was automatically generated. This method solves the inconvenience and difficulty of automatically forming the three-dimensional finite element mesh when the boundary of the object is complex, the materials are changing and the study area is huge. The application of multiple engineering examples shows that the method is simple to use, adaptable and efficient.