区域地质调查路线剖面图加密重建与三维可视化

路线剖面图是区域地质调查平面图的重要补充,其三维重建可明确反映地质层面的地表展布与地下发育情况,是重建区域三维地质模型的必要数据。针对区域地质调查路线距离长、褶曲多、地质结构复杂的特点,本文建立了一种基于纵向定位线的剖面特征点三维坐标转换模型,提出了地质界线特征点加密算法,能够有效地提高重建路线三维剖面的准确度与光滑度。研发的剖面三维重建模块已应用于多幅实际区调数据工程项目,应用结果表明:该方法可满足区域地质调查建模需求,剖面重建效果良好,具有较好的实用价值和应用前景。

Refined Reconstruction and 3D Visualization of Routine Section from Regional Geological Survey

As an important supplement to the regional geological survey planar graph,the 3D reconstruction of route profile can clearly reflect the surface distribution of geological strata and the development situation of the underground,providing the necessary data for reconstruction of regional 3D geological model.According to the characteristics of the long distance route of regional geological,such as multi fold,complex geological structure,multi fold and complex geological structure,the 3D coordinate transformation model and algorithm for profile feature points and encryption algorithm of feature points in geological boundary based on the vertical positioning line are presented in this paper to improve the accuracy and smoothness of reconstruction of the 3D Route profile.The 3D reconstruction module of profile which is based on the method developed in this paper has been integrated into the digital geological survey system in China and applied to the 3D reconstruction and visualization of the route profile of the actual regional survey data in China.Experiment results indicate that the proposed method achieves better performance,and meets the requirements of regional geological survey modeling.