数字地质填图隐式三维建模方法探索OA
Exploration of implicit three-dimensional modeling method for digital geological mapping
数字地质填图三维模型是区域地质调查成果(地质图)的一种新型表达方式,与平面地质图相比较,具有更好的可读性.针对当前主流的显式建模方法存在建模效率低、人工干预度高以及模型更新困难等局限性问题,笔者等利用江西省1∶2.5万山砀幅数字地质填图数据,基于Leapfrog Geo软件平台开展了数字地质填图隐式三维建模方法探索:应用快速径向基函数(FastRBF)快速构建断层面、第四系底界面、地层界面等地质界面;按照地质体的新老关系,利用地质界面依次切割填充建模区域的空白三维体元模型,并将切割出的地质体三维体元模型赋予属性;将全部地质体的三维体元模型进行组合,生成山砀幅数字地质填图三维模型.同时,针对复杂地质模型构建困难的问题,提出了分块建模方法;针对稀疏产状数据无法直接构建第四系底界面的问题,提出了显—隐交互式建模方法.该建模方法实现了山砀幅数字地质填图三维模型的高精度快速构建,展现出良好的应用前景.
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.
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
东华理工大学地球科学学院,南昌,330013陕西地矿第三地质队有限公司,陕西宝鸡,721300东华理工大学地球科学学院,南昌,330013浙江省浙南综合工程勘察测绘院有限公司,杭州,310000东华理工大学地球科学学院,南昌,330013山东黄金地质矿产勘查有限公司,山东莱州,261400东华理工大学地球科学学院,南昌,330013东华理工大学地球科学学院,南昌,330013中国地质科学院地质研究所,北京,100037
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
digital geological mapping three-dimensional modelingImplicit three-dimensional modelingfast radial basis function(FastRBF)Shandang sheet
《地质论评》 2026 (1)
212-228,17
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)
评论