| Metal mining is an important part of the mining sector, with the economic and social development, more and more demand for metal ores, increasing exploitation of underground stopes so that dust production also will increase, It not only related to the mine workers physical and mental health, but also closely linked with the economic efficiency of enterprises. Today, the metal mine stope blasting working face relatively few studies of dust concentration distribution and migration law aspects of the research is mostly mechanized coal excavation, mining and fully mechanized caving face. Therefore, the study of metal mine dust underground scene anti-dust work provides an important theoretical guidance and reference.Object of this study is representative of Chamber stope significance in metal mines, while combined with Shandong Mining Group will be Energy Pro Po Ling iron ore stope Chamber scene actual situation, by FLUENT computational fluid dynamics simulation software Huibaoling iron ore -100m level 22 chamber stope blasting dust concentration distribution changes and movement characteristics were studied using phase flow characteristics of fluid dynamics theory and chamber stope, the establishment of relevant mathematical models and geometric models, set simulation parameters and boundary conditions, iterative calculation, by stope airflow state based on numerical simulation and field measurement results, the air flow distribution stope for the dust concentration distribution provides an important theoretical basis. The use of k-ε two-equation model and Euler-Lagrange discrete phase (DPM) model to simulate the blasting dust concentration changes within 20 min stope, stope and concentration changes under different wind conditions dust inlet case of different wind speed dust on stope to determine the optimal stope dust wind speed (2～2.5m/s), a metal mine stope dust prevention effectiveness and relevance provides a theoretical basis. |
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