【作者】 王彦妮；

【导师】 郑永果；

【作者基本信息】 山东科技大学 ， 计算机软件与理论， 2004， 硕士

【摘要】 三维地层建模技术在分析地下地质体的整体构造、单个层面的形态以及复杂地质构造的情况的基础上，将地层的真实形态与构造完整地用直观的图形方式展示出来，为地质工作者提供了准确而直观的地质构造模型，是正确认识地质构造的重要手段，为煤矿资源描述提供了科学根据。本文以煤层底板等高线和地质柱状图为基础信息，构造煤矿主采煤层区域的三维地层模型，在此基础上，给出了三维模型的全剖切和多平面剖切方法，并针对断层、褶曲等特殊地质构造的自身特点，在多重二次函数法的基础上给出了相应的特殊插值处理，同时给出了褶曲的表示方法和建立模型的算法：带有褶曲的岩层面的建模，单值褶曲可采用三角剖分重建曲面的方法构造；对多值褶曲，为了保证褶曲各单值曲面间不产生交叉连接，我们给出了两个约束条件，重构时先确定各个多值子区域，再分别对于每一个子区域，确定各单值曲面及约束点，对每一单值曲面分别进行插值，最后用三角剖分判断条件和两个附加约束条件确定点的拓扑关系，用三角面片重构褶曲构造。更多还原

【Abstract】 Three-dimensional geosciences modeling depicts the structure of the underground geologic bodies the shape of single layer and the complicated geologic construction, and it shows the true shape and construction of the stratum by graphical methods so as to provide exact and intuitionstic model of the geologic construction, so it is the important approach to understand the geologic construction accurately, and it provides scientific foundation for the description of the coal mine resources. This paper constructs the 3D stratum model of the coal mine’ s main coal cutting distinct based on the information of seam floor contour line and geologic bar graph. On this basis, it puts forward the complete cut and multi-flats cut methods of the 3D model, and presents corresponding especial interpolation treatments for the especial geologic construction with faultage and fold based on multiple quadratic function. Meanwhile, it gives the algorithms of representing the fold and modeling. As for the modeling of the terrane with fold, if there does not exist overlapped fold on the Z order, the triangulation to reconstruct the curved surface; otherwise, in order to ensure that each single-value curved surface of fold be intersectantly connected by mistake, we give two appended constraint conditions. Each overlapped sub-distinct should be determined firstly, and then determine each single-value curved surface and its tie point, then interpolate each of them, at last, reconstruct the structure of the fold using triangulation on the basis of judgment of triangulation and the method of determining the topological relation between two points based on the two constraint conditions presented in this paper.更多还原