摘要
提出基于钻孔数据和交叉折剖面约束的三维地层建模方法,解决了单纯基于钻孔数据建模方法中无法控制钻孔间复杂的地质现象等问题。在该方法中,还利用道格拉斯-普克(Douglas-Poiker)矢量曲线抽稀算法对交叉折剖面中的矢量地层曲线进行了处理,消去了光滑曲线上对模型质量无影响的密集顶点,避免了在剖面线处Delaunay三角剖分出现过多非正三角形,从而提高了整个模型的精度。在"杭州市城市地质信息管理与服务系统"中应用该方法取得较好的效果。
In this paper,the three-dimensional geological modeling method based on drilling data and constraints of intersected folded cross-sections was put forward.Some problems were solved such as the control of complex inter-geological phenomenon in drilling data,which is out of control based on the simplex drilling data.In this method,Douglas-Poiker dilution algorithm for vector curve is used for dealing with vector stratum curve in intersected folded cross-sections and eliminating points which are no effect on the quality of modeling.This algorithm avoided non-regular triangle in Delaunay triangulation and improved the accuracy of the model as a whole.This method showed its effectiveness by the use in Hangzhou urban geological information management and services system.
出处
《地理与地理信息科学》
CSCD
北大核心
2009年第2期23-26,共4页
Geography and Geo-Information Science
基金
国家自然科学基金项目"高精度三维复杂地质结构模型快速构建方法研究"(40742015)
北京市多参数立体地质调查项目(200313000045)
中国博士后科学基金项目(20060400348)
关键词
三维地层建模
钻孔
交叉折剖面
道格拉斯-普克
DELAUNAY三角剖分
three-dimensional geological modelling
drilling
intersected folded cross-sections
Douglas-Poiker algorithm
Delaunay triangulation
