勘探线剖面图从二维转化为三维算法
发布时间：2018-12-26 08:29
【摘要】：用勘探线剖面图结合钻井与其他资料进行地质模型三维重建是三维地质建模的重要方法。其中勘探线剖面图从二维坐标系向三维坐标系的转换是三维建模的一个重要环节。针对当前勘探线剖面坐标转换过程中勘探线上钻孔并不总是布置在一条直线上(弯折勘探线)的特点,该文提出了一种构建弯折三维剖面的方法。该方法首先由剖面线的起点、终点以及勘探线上钻孔孔口点作为转折点构建三维折勘探线剖面框架;然后将二维剖面图上分段转换剖面上要素点的二维坐标到三维空间,并对跨越剖面转折点的长边添加转折控制点;最后以青海某煤田勘探区的二维勘探线剖面图数据为例,利用该勘探线剖面坐标转换算法,实现了二维勘探线剖面图到三维勘探线剖面图的转化,结果表明三维剖面上保持了原二维剖面所表达的地质模型的几何形态。
[Abstract]:It is an important method of 3D geological modeling to reconstruct geological model by using exploration line profile combined with drilling and other data. The transformation of exploration line profile from 2D coordinate system to 3D coordinate system is an important link in 3D modeling. In view of the fact that the boreholes on the exploration line are not always arranged on a straight line (bending exploration line) in the process of coordinate transformation of the section of the exploration line, a method of constructing the curved 3D section is presented in this paper. In this method, the starting point, the end point and the hole opening point of the exploration line are used as the turning points to construct the profile frame of the 3D fold exploration line. Secondly, the 2D coordinate of the element points on the section is transferred to 3D space, and the turning point control point is added to the long side crossing the turning point of the section. Finally, taking the data of 2D profile of exploration line in a coalfield exploration area in Qinghai as an example, using the algorithm of coordinate transformation of the section of exploration line, the transformation from 2D profile to 3D profile is realized. The results show that the geometry of the geological model expressed by the original 2D profile is preserved on the 3D profile.
【作者单位】： 辽宁工程技术大学测绘与地理科学学院;中国测绘科学研究院地理信息工程重点实验室;中国矿业大学(北京)地球科学与测绘工程学院;
【基金】：国家自然科学基金项目(41272367) 国土资源部地质信息技术重点实验室开发基金项目(201407)
【分类号】：P628
本文编号：2391819
[Abstract]:It is an important method of 3D geological modeling to reconstruct geological model by using exploration line profile combined with drilling and other data. The transformation of exploration line profile from 2D coordinate system to 3D coordinate system is an important link in 3D modeling. In view of the fact that the boreholes on the exploration line are not always arranged on a straight line (bending exploration line) in the process of coordinate transformation of the section of the exploration line, a method of constructing the curved 3D section is presented in this paper. In this method, the starting point, the end point and the hole opening point of the exploration line are used as the turning points to construct the profile frame of the 3D fold exploration line. Secondly, the 2D coordinate of the element points on the section is transferred to 3D space, and the turning point control point is added to the long side crossing the turning point of the section. Finally, taking the data of 2D profile of exploration line in a coalfield exploration area in Qinghai as an example, using the algorithm of coordinate transformation of the section of exploration line, the transformation from 2D profile to 3D profile is realized. The results show that the geometry of the geological model expressed by the original 2D profile is preserved on the 3D profile.
【作者单位】： 辽宁工程技术大学测绘与地理科学学院;中国测绘科学研究院地理信息工程重点实验室;中国矿业大学(北京)地球科学与测绘工程学院;
【基金】：国家自然科学基金项目(41272367) 国土资源部地质信息技术重点实验室开发基金项目(201407)
【分类号】：P628
【相似文献】
相关期刊论文 前3条
1 刘柏根;;勘探线剖面图斜孔投影及绘制[J];中州煤炭;2013年12期
2 桂颖;易万程;;基于三维GIS的地质勘探线剖面图自动绘制软件的研究[J];计算机时代;2010年12期
3 ;[J];;年期
，本文编号：2391819
本文链接：https://www.wllwen.com/kejilunwen/kuangye/2391819.html
