基于3D Mine-ANSYS-FLAC^(3D)软件的三维地质数值建模方法

A METHOD OF 3D GEOLOGIC NUMERICAL MODELING BASED ON 3D MINE-ANSYS-FLAC^(3D)

针对FLAC^(3D)建立复杂三维地质数值模型难度较大的问题,提出了一种快速有效的建模新方法。该方法首先利用3D Mine软件对Auto CAD平面图中的等高线和钻孔数据进行三维可视化操作,并输出为地层实体SAT文件或XY平面上等间距的三维坐标数据,利用自编程序将三维坐标数据转化为ANSYS可以识别的APDL语言文件后生成多个实体模型,经过ANSYS布尔操作、划分网格后利用接口程序导入FLAC^(3D),从而实现直观、快速地创建复杂地质体FLAC^(3D)模型。该方法在四川峨胜石灰石矿山三维地质数值建模中得到了实际应用,结果表明该方法是完全可行和有效的。

Aiming at the disadvantages of FLAC^3D in building complicated 3D geologic numerical model, a new quick and efficient modeling method is proposed. In this method, the contours in Auto CAD plane drawings and drilling data are 3D visualization operated by 3D Mine, and then they are trans- formed to strata solid SAT files or 3D coordinate data of i3oints which were evenly spaced in XY directions. APDL language files which can be read by ANSYS is transformed from 3D coordinate data of points by a program written by Visual Basic, several solid models will be built by reading those APDL language files. Then they are Boolean operated and meshed in ANSYS and the required model were generated in FLAC^3D by an interface program. The new modeling method has been used in building the model of Esheng limestone mine in Sichuan Province, and the result shows that the new method is feasible and effective.