三维地质建模及其在地下空间开发的应用研究

3D Geological Modeling and Its Application in Underground Space Development

为了建立精确三维地质模型,了解地下空间情况,提出一种优化的建模方法,以钻孔数据为基础,利用surfer软件对数据进行插值拟合,运用Civil 3D的曲面功能创建三维地质模型,并引入地质剖面图进行模型修正。以苏州观前街区为例建立三维地质模型,较为真实地反映了该区地质情况;通过剖切模型生成的三维地质模型栅格图、平切图对三维地质模型进行可视化分析,从而了解研究区域地质构造、地层起伏和变化规律;通过Civil 3D软件的二次开发建立剪切地下构筑物的插件,实现地下空间开挖的功能,直观清晰地获取研究区地下空间的地质情况。工程应用结果表明,该建模方法较为精确,生成的三维地质模型有助于指导地下工程建设,对未来地下空间开发具有实际指导作用。

To establish an accurate 3D geological model and gain an understanding of the underground space,an optimized modeling method is proposed in this study.Based on borehole data,Surfer is used for interpolation and fitting of data.The surface function of Civil 3D is adopted to create a 3D geological model,which is subsequently refined by incorporating geological profiles.Taking Suzhou Guanqian Street as an example,a 3D geological model was established,which offered a relatively true reflection of geological conditions;Visualized analysis was done using its grid map and slice map generated by sectioning the model.This approach allowed us to understand the geological structure,strata fluctuation,and change law of the study area;Through the secondary development of Civil 3D,a plug-in for cutting underground structures was established,which realized the function of underground space excavation,and intuitively and clearly obtained the geological conditions of the underground space in the study area.The engineering application results show that the modeling method is relatively accurate,the generated 3D geological model will provide practical guidance for construction of underground engineering and on the development of underground space in the future.