Recently, only few studies have been conducted on this combination. Thus, combining the advantages of the mine design platform in modeling and that of FLAC3D in numerical calculation and analysis is necessary. But mine design is relatively independent of numerical calculation and analysis, and its function is generally limited to visualization and qualitative judgments. presented an integrated 3D geological modeling methodology for modeling and visualization of large 3D geoengineering applications. suggested a 3D geological modeling technique (SGM) as a tool for constructing complex geological models in rock engineering, Wu and Xu used a simple plane to simulate the fault or multiple combined planes to approximate the fault, for modeling geological faults in 3D, and Zhong et al. A great progress has been made on simulation methods of complex geological interfaces and features, for instance, Xu et al. On the other hand, the geology or mine design platform demonstrates good three-dimensional modeling, and it could accurately express the spatial distribution of the stratum and the geological structure with different lithologies. But different lithologies have different mechanical features excessive simplification of the model would reduce the reliability of the numerical simulation results. Thus, engineers often use models by simplifications to approximately describe geotechnical models to solve this problem above. However, FLAC3D is quite difficult to use for pretreatment modeling, particularly in the geological body of complicated multimedia and multiboundaries. FLAC3D could be used to examine the changing rules of the field effect of rock mass from the macrotrend and it is suitable for most engineering mechanics issues, particularly for analyzing material elastoplasticity, large deformation, rheology prediction, and for geotechnical numerical simulation of construction processes. FLAC3D (numerical calculation software) has been extensively recognized and applied for analyzing geotechnical issues. IntroductionДЄlong with the rapid development of computer technology in recent years, the numerical method along with artificial intelligence technique has become an important mean of analyzing and calculating modern engineering technologies and forecasting engineering stability and reliability. The results show that the proposed transformation technique and its corresponding interface program transformed the SURPAC model into the FLAC3D model, which expedited FLAC3D modeling, verified the validity and feasibility of the transformation technique, and expanded the application spaces of FLAC3D and SURPAC. Then, the interface program that transforms the mine design model to calculate the model was compiled using FORTRAN, and the specific steps of the program implementation were described using a large iron and copper mine modeling example. First, the relationship between the FLAC3D and the SURPAC unit data was examined, and the transformation technique between the data was given.

Given that FLAC3D (a geotechnical calculation software) is difficult to use for building large, complex, and three-dimensional mining models, the current study proposes a fast and a convenient modeling technique that combines the unique advantages of FLAC3D in numerical calculation and those of SURPAC (a mine design software) in three-dimensional modeling, and the interface program was compiled.

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