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Title

基于三维激光扫描技术的复杂三维地质体建模方法.

Authors

邓小龙; 李丽慧

Abstract

In the platform of FLAC3D software, how to build the three-dimensional models of complex geological bodies is always a difficulty encountered by many numerical simulation operators. On the other hand, the three-dimensional laser scanning technique presents a unique advantage in obtaining the fine spatial data of complex objects. Therefore, by the aid of reverse engineering, a new modeling method of complex geological bodies in FLAC3D platform is proposed. The accurate spatial and geometric information of complex geological bodies is firstly obtained by employing three-dimensional laser scanning technique. The point cloud data describing surface characteristics of complex geological bodies is processed and its surface model is then reconstructed in CAD format. Using the formidable geometry cleanup and mesh generation function of Hypermesh software, the surface model is transformed into three-dimensional finite element model. The node and element information can be translated into the format which can be received by FLAC3D. According to the above processes, the model data for FLAC3D is generated and the refined model of complex geological bodies is created in the pre-processing of FLAC3D. the feasibility and practicability of this approach is verified by combining practical project.

Subjects

THREE-dimensional display systems; COMPUTER simulation; INFORMATION modeling; OPTICAL scanners; FEASIBILITY studies

Publication

Journal of Engineering Geology / Gongcheng Dizhi Xuebao, 2017, Vol 25, Issue 1, p209

ISSN

1004-9665

Publication type

Academic Journal

DOI

10.13544/j.cnki.jeg.2017.01.027