一种基于地质界面的三维模型裁剪法  

A method to trim 3D deposit models based on interface

作　　者：王志宏[1] 陈应显[1] 

机构地区：[1]辽宁工程技术大学工商管理学院,辽宁阜新123000

出　　处：《辽宁工程技术大学学报（自然科学版）》2004年第5期613-615,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：辽宁省教育厅攻关计划(20082115)

摘　　要：基于地质界面的三维地质模型在建立过程中,地表面三角形网格和煤层顶底板四边形网格在空间相交,须用两者的交线对煤层顶底板网格进行裁剪。得到地表面三角形中的每一条边与煤层顶底板四边形的交点,将这些交点形成闭合的多边形,多边形的各边按逆时针排序后作为裁剪边界,裁去煤层顶底板网格的边界内部分,形成整体的三维地质模型。In the process of 3D deposit modeling based on interface, the triangle grids of the earth’s surface intersects the quadrangle grids of coal seams at 3D space. The grids of coal seams should be trimmed by their intersection curve. If the edge of the triangle grids intersects the quadrangle grids, the intersection point is obtained. All intersection points can form a close polygon. The polygon is as the trimming boundary after it is set to anti-clockwise. The 3D deposit model can be obtained after the grids of coal seams are trimmed by the boundary.

关 键 词：顶底板 煤层 地表 地质 闭合 边界 裁剪 四边形网格 多边形 三维模型 

分 类 号：N02[自然科学总论—科学技术哲学] TP391[自动化与计算机技术—计算机应用技术]