Nowadays numerical simulation is an essential tool for stability analysis of mining engineering, and constructing a more realistic numerical model is important to ensure the accuracy and reliability of mining engineering design.
In recent years, many researchers have made significant progress in the study to quickly obtain more realistic structural elements of stopes and to apply them to production practice by performing numerical simulations of mining areas with FLAC3D. However, the model construction parts in these programs are quite difficult to use for building large and complex 3D mining models, particularly, for multi-seam and multi-boundary geological bodies.
Han Un Chol, a researcher at the Science Engineering Institute has proposed a new method of quickly converting a 3D solid model into a numerical one for stability analysis of geotechnical and mining structures by combining ANSYS, FLAC3D and SURPAC.
First, he carried out a detailed analysis of the data structure used in these three programs and presented a transformation technique between the data. Then, he converted the integrated 3D solid model made by SURPAC into a numerical model of ANSYS, and meshed it as tetrahedral elements, and consecutively, converted the meshed model of ANSYS into a grid model of FLAC3D for numerical simulation.
Finally, he applied the proposed method to numerical analysis of pillar stability in the sublevel open stopes in the target mine. It was shown that the model transformation time can be reduced to 1/50 and the accuracy of the numerical model can be increased by more than 20%.
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