数字地质填图隐式三维建模方法探索
Exploration of implicit three-dimensional modeling method for digital geological mapping
摘要
Abstract
Objectives:Digital geological mapping three-dimensional model is a new expression of regional geological survey results(geological maps).Compared with planar geological maps,it has better readability.In view of the limitations of the current mainstream explicit modeling methods,such as low modeling efficiency,high manual intervention and difficulty in model updating,this paper uses the digital geological mapping data of 1∶25,000 Shandang sheet in Jiangxi province to explore digital geological mapping implicit three-dimensional modeling method based on Leapfrog Geo software platform. Methods:Fast radial basis function(FastRBF)is used to quickly construct geological interfaces such as fault plane,Quaternary bottom interface and stratigraphic interface.According to the new and old relationship of the geological body,these geological interfaces are used to cut and fill the blank three-dimensional volume element model of the modeling area in turn,and the cut three-dimensional volume element model of the geological body is given attributes.The three-dimensional volume element model of all geological bodies is combined to generate the digital geological mapping three-dimensional model of Shandang sheet. Results:At the same time,in view of the difficulty in constructing complex geological models,a block modeling method is proposed.Aiming at the problem that sparse occurrence data cannot directly construct the Quaternary bottom interface,an explicit-implicit interactive modeling method is proposed. Conclusions:This modeling method realizes the high-precision and rapid construction of digital geological mapping three-dimensional model in Shandang sheet,showing a good application prospect.关键词
数字地质填图三维建模/隐式三维建模/快速径向基函数(FastRBF)/山砀幅Key words
digital geological mapping three-dimensional modeling/Implicit three-dimensional modeling/fast radial basis function(FastRBF)/Shandang sheet引用本文复制引用
马粉玲,吴志春,姜叔明,李宏达,郭福生,李华亮,刘平华,李斌,金文龙..数字地质填图隐式三维建模方法探索[J].地质论评,2026,72(1):212-228,17.基金项目
本文为国家自然科学基金项目"数字地质填图路线建模中复杂地质体的快速构建——以1∶50000陀上幅三维地质模型为例"(编号:41802247)、"脉型铀矿床多源信息融合三维建模关键技术与控矿构造研究——以江西相山火山盆地邹家山和居隆庵矿床为例"(编号:42472130)、江西省自然科学基金项目"显—隐交互式数字地质填图三维建模技术研究"(编号:20242BAB25183)、江西省技术创新引导类计划"江西相山铀矿田三维地质—成矿模型构建与深部找矿突破"(编号:20212AEI91008)、云南省地球系统科学重点实验室开放课题"基于区域地质调查数据的快速三维地质建模技术方法研究——以滇西剑川盆地为例"(编号:ESS2021005)的成果. This paper is supported by the National Natural Science Foundation of China"Rapid construction of complex geological bodies in digital geological mapping route modeling——Taking 1∶50000 Tuoshang sheet 3D geological model as an example"(No.41802247),"Research on key technologies and ore-controlling structures of multi-source information fusion 3D modeling of vein-type uranium deposits——Taking Zoujiashan and Julongan deposits in Xiangshan volcanic basin of Jiangxi Province as examples"(No.42472130),Jiangxi Provincial Natural Science Foundation project"Research on 3D modeling technology of explicit—implicitinteractive digital geological mapping"(No.20242BAB25183),Jiangxi Provincial Technological Innovation Guidance Program"Construction of 3D geological—metallogenic model and deep prospecting breakthrough of Xiangshan uranium ore field in Jiangxi Province"(No.20212AEI91008),Yunnan Provincial Key Laboratory of Earth System Science Open Project"Research on Rapid 3D Geological Modeling Technology Based on Regional Geological Survey Data——Taking Jianchuan Basin in Western Yunnan as an Example"(No.ESS2021005) （编号:41802247）
