文章基本信息

标题：3D geological modelling based on 2D geological map
本地全文：下载
作者：Bingxian Lin ; Liangchen Zhou ; Guonian Lv 等
期刊名称：Annals of GIS
印刷版ISSN：1947-5683
出版年度：2017
卷号：23
期号：2
页码：117-129
DOI：10.1080/19475683.2017.1304450
语种：English
出版社：Taylor & Francis Ltd.
摘要：Current methods for constructing a 3D geological model of an area require field drilling or measured section data which are often not available over large areas. 2D geological maps not only contain information on the distribution of geological strata but also provide sufficient geometric, topological and semantic information for 3D geological modelling. This paper presents a method for constructing a detail 3D model from 2D geological maps. First, a series of parallel cross sections is automatically created from the 2D geological map and the corresponding relationships of the geological objects in the cross sections are recorded. Second, a contour algorithm is used to connect these cross sections to establish a 3D geological model of the study area. The spacing of cross sections has strong impact on the result, we proposed a rule to determine the spacing of cross sections adaptively. As a case study, the method was applied to construct a 3D geological model for Xing-gang area in Chongqing city. The results of this case study suggest that the method is effective to construct a quality 3D geological model solely based on the information from a 2D geological map of the area.
关键词：2D geological map;cross section;3D geological modelling;contour algorithm