复杂地质体三维数值模型构建研究  

Research on 3D numerical model construction of complex geological body

作　　者：郭延华[1] 赵宇浩 韩现刚 GUO Yanhua;ZHAO Yuhao;HAN Xiangang(School of Civil Engineering,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038

出　　处：《甘肃科学学报》2024年第1期79-86,共8页Journal of Gansu Sciences

基　　金：国家自然科学基金面上项目(52074100)。

摘　　要：对于复杂地质体三维数值模型构建困难的问题,基于AutoCAD、SURPAC、ANSYS、FLAC^(3D)等软件进行了建模。首先利用工程地形地质图,在AutoCAD中进行地形等高线处理,以获得地表等高线;其次,利用钻孔柱状图等原始资料通过SURPAC构建钻孔模型,生成不同岩层数字地面模型(DTM),同时利用地表等高线生成地表DTM;再次,建立有规律的钻孔网格点模型,利用钻孔与DTM相交获得相交网格点坐标,在ANSYS中导入网格点坐标,建立有限元网格模型;最后通过接口程序将其导入FLAC^(3D),建立了三维数值模型。以山西朔州某煤矿为工程实例,利用该方法构建三维数值模型,并对其进行了煤层开采后地表位移数值模拟,为复杂地质体三维数值模型的构建提供了借鉴。Aiming the difficult problem of constructing 3D numerical model of complex geological body,the modeling is carried out based on AutoCAD,SURPAC,ANSYS,FLAC^(3D)and other software.Firstly,the engineering terrain geological map is used to process terrain contour in AutoCAD,and the surface contour is obtained.Using the original data such as borehole histogram,the borehole model was constructed by SURPAC,and the DTM model of different rock strata was generated.Meanwhile,the surface contour line was used to generate the surface DTM model.Then a regular grid point model of borehole is established,and the coordinates of intersecting grid points are obtained by intersecting borehole and DTM.Then the grid point coordinates are imported into ANSYS to establish the finite element grid model.Finally,it is imported into FLAC^(3D)through the interface program to establish a three-dimensional numerical model.Taking a coal mine in Shuozhou,Shanxi as an engineering example,this method is used to construct a three-dimensional numerical model,and the numerical simulation of surface displacement after coal seam mining is carried out,which provides a reference for the construction of three-dimensional numerical model of complex geological body.

关 键 词：复杂地质体 三维数值模型 SURPAC FLAC3D 

分 类 号：TD163[矿业工程—矿山地质测量]