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FLAC~(3D)前处理模块对复杂地质体建模具有一定的难度,因而提出应用AutoCAD放样功能和AutoCAD Civil3D,ANSYS切割功能为建模主体,辅以其他软件的复杂滑坡模型建立的方法.该方法在野外收集的地质资料的基础上,通过Surfer软件对离散地质界面数据进行插值并形成规整地质界面信息(数字高程模型,DEM),在AutoCAD中利用插值的坐标信息通过AutoCAD二次开发程序VBA绘制样条曲线,并利用样条曲线进行放样得到代表地质界面的曲面,再利用AutoCAD Civil3D的三维建模功能通过面切割体的方法将体切割形成地表面,最后通过ANSYS面切割体方法实现其他滑坡体单元和复杂接触面的建立,从而完成复杂地质界面的嵌合和尖灭的处理,实现了复杂滑坡模型的建立.通过胡蓉国道主干线的刘家嘴滑坡模型的建立及分析证明了该方法的可行性和实用性.
FLAC 3D pre-processing module has some difficulties for modeling complex geological bodies, and therefore proposes a method of establishing a complex landslide model using AutoCAD lofting function and AutoCAD Civil3D, ANSYS cutting function as the modeling subject, supplemented by other software. Methods Based on the geological data collected in the field, the discrete geological interface data were interpolated by Surfer software and the regular geological interface information (DEM) was interpolated. The coordinate information of interpolation was used in AutoCAD by using the AutoCAD secondary development program VBA Draw a spline curve, and use spline curve to loft to represent the surface of the geological interface, and then use the 3D modeling capabilities of AutoCAD Civil3D through the body cut the body cut to form the ground surface, and finally by ANSYS face cut body method to achieve other Landslide body unit and complex contact surface, so as to complete the fitting and extinction processing of complex geological interface, and to establish a complex landslide model.Based on the establishment and analysis of the Liujiazui landslide model of the main trunk line of Hu Rong National Road The feasibility and practicability of this method.