天津市重力数据三维可视化反演建模研究

Constructing 3D visualization model with gravity data of Tianjin

基于对天津市全区布格重力数据采用NVDR-THDR技术处理的基础上,对断裂体系、构造单元进行了判别和划分,并以Geosoft为平台,通过Visual C++软件接口的开发,实现了对天津市重力数据三维反演计算及可视化建模动态展示。通过模型截取剖面与实测数据拟合剖面对比,表明三维可视化模型是可靠的,能直观和真实地揭示地下地质体的空间展布。

Using the technique of normalized vertical derivative of the total horizontal derivative of the Bouguer gravity anomaly in Tianjin,this paper infers the faults structure and divides into tectonic units in Tianjin.Then,based on the Geosoft platform,the 3Dinversion of gravity data and the dynamic display of 3Dvisualization model have been completed by developing interface with Visual C++.This paper suggests the 3Dvisualization model is reliable and this model can directly reveal the spatial distribution of underground geological body after comparing the sliced profiles and fitted section.