三维地质建模方法在区域地质调查中的应用研究

Application of 3D Geological Modeling Method in Regional Geological Survey

随着数字化的快速发展,三维建模技术已经得到了广泛的应用。为了探索三维建模技术在区域地质调查中的应用方法,本研究阐述了面向区域地质调查的三维地质建模工作方案与方法。选择重庆市潼南区为研究区域,使用区域调查中的地形数据、遥感影像数据、钻孔数据、剖面数据等各种资料,在三维地质建模系统(GeoBIM)平台中进行三维地质建模,主要包括多源数据收集和预处理、空间数据库建库、地表三维模型的建立与地下三维模型的建立等。针对GeoBIM建模过程中出现的各基岩面拟合、围合面异常等问题,提出了相应的解决方法。建立的三维模型具有较强的可视化与分析功能,并进一步延伸地质信息服务功能。

With the rapid development of digitalization,3D modeling technology has been widely used.In order to explore its application in regional geological survey,this paper expounds its work program and method.The study area was chosen in the Tongnan District of Chongqing,the topographic data,remote sensing,image data,borehole data,geological profile data and other auxiliary data obtained in the regional survey were used to carry out 3D geological modeling on GeoBIM platform.The workflow mainly includeds multi-source data collection and preprocessing,spatial database construction,surface and underground 3D model development.Especially,so?lutions to fit and construct the enclosure surface of each bedrock in the modeling were stressed.The finally avail?able model has 3D and intuitive characteristics,and can be further extended to the function of geological infor?mation service.