Three-Dimensional Model Establishment And Underground Goafs Visualization Research In Luanchuan Sandaozuang Mine

Three-dimension models of deposit are the foundation of "digital mine" and the digital characterization of deposit. With the development of "digital mine", the researchers pay more and more attention to the three dimensional model.A large amount of cavities, formed by underground mining in the metal mineral resources, are not only endangering mine's safety but also doing harm to reclaim the resource sufficiently. Therefore, the research and application, based on the Cavity Monitoring System, have become significant issues in the metal mines of our country.The Sandaozhuang mine in Henan province is a large deposit, in which there is a great deal of molybdenum, and there are some associated metals such as Au and Ag. The stopes, chambers and roadways, left behind by the original mines, have become underground goafs when the mines are open pit mining. And the underground goafs hazard the producing process badly. So it is very important for the open-air stage stability analysis to establish visualization of the underground goafs.The paper compares with the different types of three-dimensional modeling software. At last, I have selection Surpac Vision 5.1 F developed by Surpac Minex Group as the platform for the modeling of the Sandaozhuang mine. Based on the borehole data offered by the mine, the orebody model, Open pit model and surface model are established by the Microsoft Access 2000 and the Surpac software.An accurate model of the mechanics calculation is established is the foundation of numerical simulation study on rock and soil engineering stability. The actual 3D Shape and accurate spatial position of underground goafs are the important factors which affect the reliability of the numerical simulation of underground goafs stability. However, in the past, the shape of the cavity was usually taken as to be a regular one which is confirmed by the stope mining design, or even used a simple manual model in the process of the numerical simulation, which depressed the reliability of the numerical simulation results seriously. In this paper, The three-dimensional shape and the spatial location are obtained accurately by using Cavity Auto scanning Laser System, and the three-dimensional shape model of the cavity is established precisely by using the surpac software. Coupled cavity model and the all model of the mine build by surpac software, a kind of modeling method for numerical simulation on underground goafs stability by coupling Surpac and FLAC^3D is put forward. So, a new coupling technique of numerical simulation on underground goafs e stability based on cavity monitoring is formed, which improve the availability and reliability of the numerical simulation results effectively.