三维地质建模中的多源数据融合技术与方法

发布时间：2018-01-10 15:35

  本文关键词：三维地质建模中的多源数据融合技术与方法　出处：《吉林大学学报(地球科学版)》2016年06期 　论文类型：期刊论文

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【摘要】：建模数据多源性是三维地质建模最大的特点,模型构建的关键是将这些数据有效地融合以提高模型的精度和可靠性。首先统一地理、地质、物探、化探、遥感、钻探、采矿等建模数据的坐标系和比例尺,构建原始资料数据库。然后运用等高线数据构建数字高程模型(DEM)面,以DEM面为载体实现了地表填图路线PRB(point-routing-boundary)数据、矢量地质图、栅格地质图、遥感影像图等地表地质数据的有效融合;在已有地表地质数据和地下地质数据约束的条件下,通过约束及离散光滑插值技术实现了地表地质数据和地下地质数据的融合;根据已有建模数据确定合理的建模单元,对数据库中的点、线、面、体等数据进行归类,构建与建模单元一致的原始资料数据库。最后在原始资料数据库中,以高精度地质数据为约束对物探数据进行地质解译,综合已有建模数据,并考虑地质体的三维空间展布,实现了不同精度数据之间的融合;以主要建模数据构建初始地质界面,以高精度建模数据对已构建的初始地质界面进行约束,实现了主要建模数据与次要建模数据的融合。其中,点对线约束、点(线)对面约束、面对面约束等约束建模技术在建模数据融合过程中起重要作用。
[Abstract]:Multi-source modeling data is the most important feature of 3D geological modeling. The key to model construction is to integrate these data effectively to improve the accuracy and reliability of the model. Firstly, unified geography, geology, geophysical exploration, geochemical exploration, remote sensing. The coordinate system and scale of the modeling data such as drilling and mining are used to construct the original data database. Then the digital elevation model is constructed by using the contour data. Based on the DEM surface, the surface mapping route, vector geological map and grid geological map are realized. Effective fusion of surface geological data such as remote sensing image map; Under the condition of the existing surface geological data and underground geological data constraint, the fusion of surface geological data and underground geological data is realized by means of constraint and discrete smooth interpolation technology. According to the existing modeling data to determine the reasonable modeling unit, the data in the database such as points, lines, surfaces, bodies and so on are classified, and the original data database which is consistent with the modeling unit is constructed. Finally, in the original data database. The geological interpretation of geophysical data is carried out with the constraint of high precision geological data. The existing modeling data are synthesized and the 3D spatial distribution of geological body is considered to realize the fusion of different precision data. The primary geological interface is constructed from the main modeling data and the initial geological interface is constrained by the high-precision modeling data. The fusion of the main modeling data and the secondary modeling data is realized. Point (line) constraint, face to face constraint and other constraint modeling techniques play an important role in modeling data fusion process.
【作者单位】： 东华理工大学放射性地质与勘探技术国防重点学科实验室;东华理工大学地球科学学院;东华理工大学江西省数字国土重点实验室;
【基金】：中国地质调查局地质大调查项目(1212011120836,1212011220248) 放射性地质与勘探技术国防重点学科实验室开放基金项目(RGET1305) 江西省数字国土重点实验室开放基金项目(DLLJ201614)~~
【分类号】：P628
【正文快照】： Technology and Method of Multi-Data Merging in 3DGeological ModelingWu Zhichun1,2,3,Guo Fusheng2,Lin Ziyu2,Hou Manqing1,2,3,Luo Jianqun1,2,31.Key Laboratory for Radioactive Geology and Exploration Technology,Fundamental Science forNational Defense,East C，

本文编号：1405836