多源数据三维地质结构模型约束的属性建模方法:以北京市通州城市副中心为例  

Attribute modeling constrained by multi-source data-based 3D geological structural model:A case study in Tongzhou District,Beijing

作　　者：薛涛[1] 包训栓 朱小弟 黄骁 XUE Tao;BAO Xunshuan;ZHU Xiaodi;HUANG Xiao(School of Information Engineering,China University of Geosciences(Beijing),Beijing 100083,China;Beijing DreamRocks Technology Limited Company,Beijing 100037,China;Beijing Institute of Geological&Prospecting Engineering,Beijing 100048,China)

机构地区：[1]中国地质大学(北京)信息工程学院,北京100083 [2]北京梦之岩科技有限公司,北京100037 [3]北京市工程地质研究所,北京100048

出　　处：《地学前缘》2023年第3期529-536,共8页Earth Science Frontiers

基　　金：北京市财政重点项目“通州城市副中心城市绿心区重大地质问题调查与评价项目(XM-0000158306180417005)”。

摘　　要：支持多源异构数据的三维地质建模方法一直是三维地质建模研究的重点和难点之一。本文以北京市通州城市副中心工程地质勘察为例,设计了一种多源数据三维地质模型自动建模方法。该方法首先在数据预处理阶段,利用剖面、地震剖面解译及等值面(线)等数据生成虚拟钻孔,从而将异构的多源数据统一转换成同构的虚拟钻孔数据,然后利用钻孔和虚拟钻孔实现三维地质结构的自动化建模;根据已构建的三维地质结构创建属性模型结构约束,采用六面体网格或四面体的单元结构构建属性模型网格;属性模型网格中的每个属性块通过三维空间插值方法进行属性赋值,然后将属性变化映射为颜色变化,建立了相应的三维地质属性模型,实现了多源数据三维地质结构模型约束的属性建模。该方法已经应用在工程地质勘察和城市地下空间开发等领域,通过使用多源异构的建模数据,使构建的三维地质模型更加完善,有助于三维地质模型的推广和应用。Method development supporting multi-source heterogeneous data has always been one of the key and challenging issues in 3D geological modeling.Taking Tongzhou District,Beijing as an example,we designed an automated method of building 3D geological model using multi-source data.Firstly,in the data preprocessing stage,the virtual drilling is generated based on section,seismic section interpretation and isosurface(line)data so as to uniformly convert the heterogeneous multi-source data into isomorphic virtual drilling data,and then a 3D geological structural model is built by automated modeling of 3D geological structure using drilling and virtual drilling data.Secondly,the structural constraints of the attribute model are created based on the 3D geological structural model,and the attribute model grid is constructed using hexahedron or tetrahedron units.Thirdly,each attribute block in the attribute model grid is assigned an attribute value through 3D spatial interpolation.Finally,we map the attribute change onto color change to establish the corresponding attribute model,thus completing attribute modeling constrained by the geological structure model.This method has been used in engineering geological survey and urban underground space development,which contributes to the improvement and application of 3D geological model.

关 键 词：多源数据 三维地质建模 属性建模 虚拟钻孔 

分 类 号：P642[天文地球—工程地质学] TU984[天文地球—地质矿产勘探]