基于三维激光扫描的地质立体模型的建立

Geological Modeling of Complex Landforms and Faults Based on FLAC^(3D)

针对复杂地貌和地质构造条件下数值模拟的具体问题,根据从局部到整体的模型划分思想,综合运用FLAC^(3D)、SURFER等平台,采用Wedge与Brick块体单元,通过编程实现三维地质地貌。利用趋势面多项式拟合方法生成层状连续的不同岩性地质体,采用interface界面来处理小范围断层上、下盘的断层面,而在上、下地壳分层建模中,使用添加attach face的方法来处理两层物质间的分界面,解决了FLAC^(3D)在建立断层、三维地质模型中常见的一些关键技术问题。

With respect to the specific issues for simulation in conditions of complex landforms and geological structure,according to the divide idea from the local to the whole,integrated using the platforms of FLAC^(3D) and SURFER,using the units brick of Wedge and Brick,achieved three-dimensional geological features by programming. Using trend surface polynomial fitting method to generate a continuous layered different geological,using interface to handle hanging wall and foot wall of the fault on a small scale.But in the upper and lower crust layered modeling,using the way of add attach face to handle interface between the two materials. Resolving some common key technical issues of establishing faults and three-dimensional geological models.