TITLE:
3D Geology Modeling from 2D Prospecting Line Profile Map
AUTHORS:
Qing-Yuan Li, Yang Cui, Chun-Mei Chen, Qian-Lin Dong, Zi-Xiang Ma
KEYWORDS:
Prospecting Line Profile, 3D Geology Modeling, Upgrading Dimensional, Coordinate Transformation, Profile Framework, Segmented Convert
JOURNAL NAME:
International Journal of Geosciences,
Vol.6 No.2,
February
25,
2015
ABSTRACT: Using prospecting line
profile map in combination with drilling and other information for 3D
reconstruction of geological model is an important method of 3D geological
modeling.This paperdiscusses the theory and
implementation method of 2D prospecting line map into 3D prospecting line map
and then into 3D model. The authors propose that it needs twice upgrading
dimension to reconstruction 3D geology model from prospecting line profile map.
The first upgrading dimension is to convert profile from 2D into 3D profile,i.e.the 2D points in the 2D profile map
upgrading dimensional transformation to 3D points in a 3D profile. The second
upgrading dimension is that transform 0D point 1D curve and 2D polygon feature
into 1D curve, 2D surface and 3D solid feature. The paper reexamines contents
and forms in prospecting line map from the two different viewpoints of geology
and geographic information science. The process of 3D geology modeling from 2D
prospecting map is summarized as follows. Firstly, profile is divided into
several sections by beginning, end and drill point of the prospecting line.
Next, a 3D folded upright profile frame is built by 2D folded prospecting line
on the plan map. Then, 2D points of features on 2D profile are converted into
3D points on 3D profile section by section. And then, adding switch control
points for the long line crossover two segments. Lastly, 1D curve features are
upgraded to 2D surface.