异源点集下三维断层建模方法  

3D fault modeling on point sets from different sources

作　　者：王润怀[1] 李永树[2] 

机构地区：[1]河南理工大学资源环境学院,河南焦作454000 [2]西南交通大学土木工程学院,四川成都610031

出　　处：《煤田地质与勘探》2007年第5期11-16,共6页Coal Geology & Exploration

基　　金：国家自然科学基金项目(40371098)

摘　　要：用于断层建模的异源点集,因其具有不同特征而影响到建模途径和方法。以三维断层模型的3D GIS应用为目标,分析了原始地质观测点集、钻孔点集、剖面点集和平面点集的信息构成特征,提出了异源点集下三维断层数据模型的构建方法和流程。原始地质观测点集和钻孔点集间接表达了断层的空间特征,通过空间平面、曲面和曲线构建了断层面、地层面和断层交线的数学模型,并借助于连续模型的离散化,实现了独立断层建模点集的重建;剖面点集和平面点集可直接用于断层建模。以双TIN面模型为例阐述了断层三维模型的构建方法。Point set used for fault modeling from different sources vary in its characteristics, which influence on the approach and methods in modeling. Aimed at applying 3D fault model to 3D GIS, the information structure in modeling point sets such as geological observations, drilling holes, sections and ichnographies were analyzed. The modeling methods and flows for 3D fault models on point sets from different sources were presented. Since the original point sets such as geological observation and drill holes express the spatial characteristics of faults indirectly, the reconstruction for point sets were performed by means of constructing the mathematical models such as plane, curved surface and curved line for fault surfaces, strata surfaces and the intersecting lines between fault surfaces and strata surfaces. The point sets for independence fault modeling were reconstructed by means of dispersing the continuous models. Point sets from sections and ichnographies can be used in modeling directly. Taking the duo- TIN faces model as an example, the modeling methods for 3D fault were illustrated

关 键 词：三维断层建模 异源点集 数学模型 数据模型 3D GIS 

分 类 号：P628.3[天文地球—地质矿产勘探] TP399[天文地球—地质学]