三维地质和地下水建模的研究和应用

Research and Application of Geological and Groundwater 3D Model

针对地质和地下水可视化分析的应用问题,提出了基于三维建模和分析的可视化研究方法,并建立了有效的针对地势和地下水的可视化平台.尤其针对建模过程中数据的连续性问题采用了基于多元二次插值方法,从而有效的解决了抽样数据点稀疏的问题.在地层建模方面,系统采用了基于三棱柱体积元素的建模方法,同时通过基于检测井法线信息的有效插值算法解决了地层建模过程中的连续性问题.针对地下水的具体应用,提出了基于图像的绘制方法,实现了地势、地层断层和地下水分布的可视化分析和展现.

For the geological and groundwater visualization application,the paper presents a visualization analysis method based on 3D modelling and visualization algorithm.Especially for the continuity of the sampling data problem,it adopts a multi-quadric interpolation algorithm.In the process of geological modelling,a tri-prism volume elements based modelling algorithm is used to solve the volume modelling.In the extension of specific groundwater application,an image based rendering algorithm is used to implement the terrain,stratum chasm and groundwater distribution visualization.