| 勘探线剖面三维坐标与剖面图二维坐标转换计算方法 |
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| 引用本文： | 李蒙文,赵财胜,郑榕芬,陈莉.勘探线剖面三维坐标与剖面图二维坐标转换计算方法[J].吉林大学学报(地球科学版),2005,35(6):818-822,826. |
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| 作者姓名： | 李蒙文 赵财胜 郑榕芬 陈莉 |
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| 作者单位： | 1. 中国地质科学院,矿产资源研究所,北京,100037
2. 中国地质大学,地球科学与资源学院,北京,100083 |
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| 摘 要： | 探讨了地质勘探线剖面三维坐标与剖面图二维坐标相互转换方法及其实现过程,建立了数学模型,并通过计算实例进行了验证.主要作法是,根据剖面图的特性选择勘探线剖面地表迹线与勘探基线所在垂直面的交点为转换计算基准点(B),以勘探线剖面内过基准点(B)的水平直线(L)为旋转轴,将勘探线剖面旋转至水平位置;再以基准点(B)为旋转点,将勘探线剖面在水平面内旋转至水平直线(L)成东西向,建立剖面内空间要素旋转前后的关系式,实现三维坐标向二维坐标转换.按相反的操作过程,已知转换后剖面图上点的二维坐标,可以计算出剖面上对应点的三维空间坐标,实现二维坐标向三维坐标转换.
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| 关 键 词： | 地质勘探线剖面图 三维坐标 二维坐标 勘探线剖面 三维坐标转换 剖面图 计算方法 Drawing Section Line Prospecting Method Transformation 空间坐标 对应点 操作过程 关系式 空间要素 内旋转 水平面 转点 位置 旋转轴 |
| 文章编号： | 1671-5888（2005）06-0818-05 |
| 收稿时间： | 2005-07-14 |
| 修稿时间： | 2005-07-14 |
A Study on Transformation Method Between the 3D Coordinates of a Geological Prospecting Line Section and the 2D Coordinates of the Line Section Drawing |
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| LI Meng-wen,ZHAO Cai-sheng,ZHENG Rong-fen,CHEN Li.A Study on Transformation Method Between the 3D Coordinates of a Geological Prospecting Line Section and the 2D Coordinates of the Line Section Drawing[J].Journal of Jilin Unviersity:Earth Science Edition,2005,35(6):818-822,826. |
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| Authors: | LI Meng-wen ZHAO Cai-sheng ZHENG Rong-fen CHEN Li |
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| Institution: | 1. lnstituteof Mineral Resources, ChineseAcademy of Geological Sciences, Beijing 100037, Chinas;2. Facultyof Geosciences and Resources, China University of Geosciences, Beijing 100083, China |
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| Abstract: | The authors mainly discuss the coordinates transformation technique with which the 3D coordinates in the section of a geological prospecting line and the 2D coordinates in the sectional drawing of the line can be converted reciprocally.A mathematical model of the transformation is given and it is validated through the calculation of real examples.Based on the attributes of the sectional drawing,the intersection point between surface trace of the selected prospecting line section and the vertical plane where the prospecting baseline is located is taken as the reference point(B).The line section is then rotated to the horizontal plane upon the horizontal line(L) which crosses the reference point(B).Upon the reference point(B) the prospecting line section in the horizontal plane is rotated till the horizontal line(L) is in east-west direction.An expression describing the spatial elements prior and after the rotation is established,with which the 3D coordinates can be transformed into the 2D coordinates.The reverse process from 2D to 3D can also be realized when the 2D coordinates of the transformed sectional drawing of geological prospecting line are given. |
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| Keywords: | the sectional drawing of geological prospecting line 3D coordinates 2D coordinates |
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