一种电磁法三维数值模拟的建模与网格剖分方法  

The method of 3D modeling and grid subdivision for electromagnetic numerical simulation

作　　者：何畏[1,2] 吴文鹂 李建华[1,2] 林品荣[1,2] 梁萌[1,2] 顾观文[1,2] 冯斌[1,2] HE Wei;WU Wen-Li;LI Jian-Hua;LIN Pin-Rong;LIANG Meng;GU Guan-Wen;FENG Bin(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,China;Laboratory of Geophysical EM Probing Technologies,MLR,Langfang 065000,China)

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [2]国土资源部地球物理电磁法探测技术重点实验室,河北廊坊065000

出　　处：《物探与化探》2018年第6期1272-1279,共8页Geophysical and Geochemical Exploration

基　　金：深地资源勘查开采重点专项(2018YFC0603201);国家高技术研究发展计划("863"计划)重点课题(2014AA06A610);基础性公益性地质矿产调查专项(DD20160046;DD20179374)

摘　　要：为满足电磁法三维数值模拟解释对交互建模与可视化网格剖分的需求,利用计算机图形学、人机交互、拓扑关系学等技术,设计了起伏地形下三维矢量交互建模、四面体和六面体网格剖分流程,并开发了软件模块。该软件可提供起伏地形下电磁法三维数值模拟的四面体、六面体网格剖分的实用化工具,提高了电磁法三维在数据模拟与解释方面的可视化程度和计算效率。Using some techniques such as computer graphics,human-computer interaction,and topological relation,the authors designed the process about the three-dimensional vector modeling under undulating topography,tetrahedron mesh generation,and hexahedral mesh generation.Through the study,the corresponding software module was developed.In the software,some tetrahedron mesh generation and hexahedral mesh generation utility tools can be provided to solve some related problems in MT.The efficiency of 3D electromagnetic method is improved in such fields as data management,model visualization and interpretation integration.

关 键 词：大地电磁 三维建模 网格剖分 起伏地形 四面体 六面体 

分 类 号：P631[天文地球—地质矿产勘探]