Development of 3d landslide dynamic modeling based on DSAF integration system

3d landslide geological modeling is the prerequisite of geotechnical and engineering geology numerical simulation analysis, and there have not been very direct and efficient software tools to realize this modeling process currently. Taking account of this, a new 3d landslide modeling method is posed from an integrative view in this paper. First, extract the 3d modeling origin data of a specific landslide from its DXF file, and then generate terrain surface and sliding surface grid data by gird interpolation in Surfer software. Second, create solid grid modeling data files by APDL language, and then input them to ANSYS and generate element information file and node coordinate file. Third, produce mesh model transformation file by Fish language, and then input it to FLAC^3D to construct 3d landslide numerical model. Through these steps, DSAF integration system dynamic modeling platform is constructed with Visual Basic programming language as control platform and based on the interface technology and secondary development technology between CAD, Surfer, ANSYS and FLAC^3D these 4 kinds of software. DSAF integration system can realize seamless connection by using data file as the transmission media. Therefore, 3d dynamic modelling system is developed. This system provides a fast way in 3d landslide modeling for FLAC^3D.