盆地三维构造-地层格架的矢量剪切原理及方法  

VECTOR CUT PRINCIPLE AND METHOD FOR 3-D TECTONIC-STRATIGRAPHIC BASIN FRAMEWORK

作　　者：田宜平[1] 刘海滨[1] 刘刚[1] 吴冲龙[1] 

机构地区：[1]中国地质大学资源学院,武汉430074

出　　处：《地球科学（中国地质大学学报）》2000年第3期306-310,共5页Earth Science-Journal of China University of Geosciences

基　　金：国家自然科学基金"九五"重点项目!(No .4973 2 0 0 5 )

摘　　要：三维矢量剪切功能的强弱 ,是衡量所建立的盆地三维数字体质量的重要标志 .在阐述了基于B_Rep模型的盆地三维数字体矢量剪切原理之后 ,探讨了在计算机上实现矢量剪切的技术途径与方法 .以线条、填充多边形、曲面和注释 4种图元的剪切为基础 ,建立了一个较为完善的盆地三维数字构造 -地层体的矢量剪切模型 ,并且编制了相应的软件 .使用这一技术方法和软件系统 ,对珠三凹陷进行了实际的矢量剪切分析 ,取得了良好的效果 .The intensity of 3_D vector cut is an important indicator for the quality test of a 3_D digital basin model established. After the reiteration of vector cut principle of the B_Rep model_based 3_D digital basin, this paper deals with the technical approaches and methods for the actualization of the vector shearing function on a microcomputer. On the basis of vector shearing of four graphical primitives: line, polygon, surface and text, the author established a relatively perfect vector cut model for 3_D digital tectonic_stratigraphic basin, and, furthermore, wrote the corresponding software. The vector cut analysis of the Zhusan depression by means of this technical approach and software system has brought about an expected result.

关 键 词：三维盆地模拟 构造-地层格架 矢量剪切 盆地 

分 类 号：P542.3[天文地球—构造地质学]