3D GEOLOGICAL VISUALIZATION AND NUMERICAL MODELING OF COMPLICATED SLOPE
复杂边坡三维地质可视化和数值模型构建

The construction of the 3D visualization model and the numerical model of rock slope is critical in geotechnical,hydroelectric and hydropower projects. The 3D visualization model not only illustrates the spatial combination of structural plane in slope,but also discloses the macroscopic failure mode of slope. The combination and transition between the visualization model and the numerical model can indicate the simulation and dynamic modification of geological information. Based on AutoCAD platform,AutoLisp program and interpolation method of MLSM are used to generate the 3D visualization model. Moreover,the interface to the numerical model is discussed. This technique well combines the excellent graphic manipulation of AutoCAD and the general numerical softwares FLAC3D and 3DEC of ITASCA Ltd.. Besides,the model can adapt the technique to change the geological information. Combined with the discrete element method for deformable bodies,the technique has been well applied to the water intake high slope in Baihetan Hydropower Station. FISH program in 3DEC and AutoLISP program in AutoCAD are combined to improve the functions of preprocessing and post processing of 3DEC. The anchorage method in 3DEC,visualization of contour chart and nephogram of 3D displacement and plastic zone are discussed.